USRE41137E1 - Music distribution systems - Google Patents
Music distribution systems Download PDFInfo
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- USRE41137E1 USRE41137E1 US11/801,109 US80110907A USRE41137E US RE41137 E1 USRE41137 E1 US RE41137E1 US 80110907 A US80110907 A US 80110907A US RE41137 E USRE41137 E US RE41137E
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- G—PHYSICS
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- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
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- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/08—Payment architectures
- G06Q20/12—Payment architectures specially adapted for electronic shopping systems
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- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/08—Payment architectures
- G06Q20/12—Payment architectures specially adapted for electronic shopping systems
- G06Q20/123—Shopping for digital content
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- G06Q30/00—Commerce
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- G06Q30/00—Commerce
- G06Q30/06—Buying, selling or leasing transactions
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- G—PHYSICS
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
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- H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
- H04H60/46—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for recognising users' preferences
Definitions
- the invention relates to music distribution.
- music is blanket transmitted (for example, via satellite downlink transmission) to each customer's computer-based user station.
- Customers preselect from a list of available music in advance using an interactive screen selector, and pay only for music that they choose to record for unlimited playback.
- An antipiracy “ID tag” is woven into the recorded music so that any illegal copies therefrom may be traced to the purchase transaction.
- the recent Internet music distribution model typically based on MP3 technology, requires a customer go to an Internet site, select or be given a music selection, download reception software and a key, preview or purchase a selection, download a one-to-one encrypted (or not) compressed copy of the selection, decrypt the selection with software and play the selection on the consumer's computer or write it to a CD, DVD, MD or digital player.
- the download is stored in some form on the customer's hard drive.
- CD's Digital compact disk technology
- CD's use 16-bit, 44 KHz digital technology so that music recorded on a CD has excellent signal-to-noise ratio, flat frequency response that is wider than human hearing, and no constant or varying pitch distortion.
- the instruction of CD technology caused significant concern among content providers about the risks of circulating library-quality copies of their music.
- Small-scale piracy of CD's became common as consumer music “boxes” were sold that had CD players feeding tape recorders. These units allowed CD's to be easily copied although without the full sound quality and convenience of the original CD.
- a second technological revolution is also influencing piracy. This is the ability to “compress” the amount of digital data needed to store or communicate music (or video).
- a one-hour music CD requires about 600 megabytes of data (16 bits/sample*44100 samples/sec*3600 sec*2 channels). This large amount of data has discouraged communication of CD's over the Internet, and storage of the CD in hard drives.
- MPEG compression technology reduces the data capacity by a factor of 8 for CD music, making it easier and cheaper to communicate and store.
- protected software is software that runs the engine but can not be analyzed by outsiders to see how it works or does the encoding or decoding
- protected software is software that runs the engine but can not be analyzed by outsiders to see how it works or does the encoding or decoding
- Targeting is the presentation of material to pre-selected groups. For example, a new record thought to appeal to teenagers would be described by advertising in magazines teenagers read, TV shows they may watch or on radio stations they are likely to listen to. Because of the wide range of music types and preferences, targeted advertising is key to affordable, efficient advertising in the music industry.
- CD stores to allow potential customers to sample music releases is a method of allowing very specific sampling of possible choices of targeted advertising recognizing that customers rarely purchase without prior knowledge of the group, recommendations, advertisement, or hearing part of the music.
- the present invention provides music distribution systems that are beneficial to all involved parties, namely consumers, content providers and data transmission providers.
- consumers are able to preselect music selections from thousands of CD's that are transmitted daily.
- Customers of the music distribution system utilize a menu driven, graphical user interface with simplified controls that provide music selection by artist, title and category (e.g., jazz, classical, rock, etc.).
- Music content is blanket transmitted, preferably via direct broadcast satellite (DBS), in an encoded format directly to each customer's receiving dish or antenna which is linked to the customer's user station.
- DBS direct broadcast satellite
- the user station may store the content on a suitable intermediate storage medium such as a disk drive.
- the customer may “preview” the stored music for free and thereafter decide whether to purchase a permanent copy.
- a full quality CD is recorded via a CD writer that may be part of the user station.
- the customer is billed by the music distribution system operator.
- Antipiracy protection is provided by weaving an ID tag into the recorded music so that any illegal copies therefrom may be traced to the purchase transaction.
- An automated production facility may be provided to manufacture low-volume CD's (i.e., CD's that are not frequently requested) and distribute them by ground transportation, while the higher volume CD's are distributed by satellite as described above.
- Customer music preferences may be used to determine what content is stored in the limited space on their hard drive, and that content is immediately available, on demand, to the consumer.
- Customer preference information is thereby used to make use of limited broadcast bandwidth and system storage. This preference information is gleaned from information given by the user, and may be combined with demographic preference information collected from a population of customers.
- the music distribution system of the present invention offers numerous advantages to consumers. For example, the invention provides a much greater selection of recordings than any typical retail music store or mail order operation.
- the invention also provides full access to the available recordings to those who live in geographically remote and/or sparsely populated areas that may presently have little or no access to retail music stores.
- the invention also provides full access to recordings to elderly and handicapped persons who are housebound.
- the recordings especially high demand recordings such as “top 25” CD's and new releases
- Certain recordings limited in number by the capacity of the intermediate storage medium (e.g., 80 CD's) are instantly available for purchase.
- the present invention also provides the ability to update music pricing at any time, for example on a daily, weekly or monthly basis, so that consumers can choose to order music at times when content providers offer pricing specials or incentives.
- Music content providers realize increased income increased income because a significant portion of the existing content in their music libraries is available for sale every day.
- the invention also allows music content providers to change pricing at any time, e.g., daily/weekly/monthly, to optimize price vs. consumer demand.
- content providers are allowed to meet consumer demand for a significant portion of the existing content inventory value every day. This provides an extremely high benefit by effectively allowing the market to clear (i.e., real demand matches supply), something that the current music distribution models do not provide.
- music content providers are confident that they can distribute their music with extremely high security by avoiding distribution of content over open networks and open operating systems and through the use of appropriate encoding technology, including encryption/decryption and the use of ID tags that permit illegal copies to be traced.
- Transmission providers realize the advantage of a significantly increased income base for supporting their services and the utilization of lower cost, off-peak time for transmission of a significant portion of the music.
- This system also allows targeted advertising of specific recordings to persons of specific preferences.
- This advertising may be text, graphics or video on the customer's screen or portions of music.
- FIG. 1 is a schematic representation of a satellite-based music distribution system.
- FIG. 2 shows the operational sequence for use of the music distribution system of FIG. 1 by a customer.
- FIG. 3 shows another music distribution system wherein the user station includes an Internet browser and processor enabling customers to access the system operator's music Internet site via phone line or Internet connection.
- FIG. 4 shows yet another music distribution system depicting optional content/programming transmission links.
- FIG. 5 is a block diagram of one simplified embodiment of a business model for commercializing a music distribution system.
- FIG. 6 is a block diagram of portions of a music distribution system showing an automated CD manufacturing operation used to supplement satellite distribution, and also showing a “payload scheduler” used to actively manage the transmission schedule of music.
- FIG. 7 is a flow sheet showing the manner of music distribution for streaming top hit songs during the day.
- FIG. 8 is a flow sheet showing how orders for musical recordings placed during the previous day are batch streamed at night to fulfill customer orders.
- FIG. 9 shows a screen containing one example of a simple graphical user interface used by a customer to enter customer music preference information by music style.
- FIG. 10 shows a screen containing another example of a graphical user interface for entering more complex, multi-level customer preference information.
- FIG. 11 is a block diagram showing how customer preference information entered by customers and general population clustered preference data compiled and analyzed by the system operator are used to create customized preference-based downloading choices at the customer user stations.
- FIG. 12 is a flow sheet showing the streaming of music at night based upon profile analysis.
- FIG. 13 is a flow sheet showing the procedure for promotion-based streaming of music, for example where a record label decides to push a selected musical recording as a promotion.
- FIG. 14 is a flow sheet showing a procedure for quick-shipping CD recordings overnight from an automated CD production facility.
- FIG. 15 is a chart identifying various music distribution methods employed according to certain embodiments of the invention and the options available to customers with and without recording devices (e.g., CD burners).
- recording devices e.g., CD burners
- System 10 utilizes direct broadcast satellite (DBS) transmission via satellite 20 as the means for blanket transmitting encoded data, either in real time or in time compressed format (for example, at two to four seconds per song).
- the program data is received at each customer household by a receiving antenna or dish 110 .
- Dish 110 is linked to a dedicated “box” or user station 28 by a satellite receiver link 30 .
- User station 28 is an interactive device permitting customers to preselect desired music selections for recording through the user station.
- Station 28 communicates at appropriate times with a central controller system 36 via a phone/modem connection 38 (land, Internet or cellular).
- Central controller system 36 stores a discrete address (e.g., telephone number, credit card number or billing address) for each customer household and receives information via connection 38 to verify that a preselected music selection has been recorded. Central controller system 36 utilizes this information to bill customer households and also to credit the accounts of content providers.
- the satellite link (or alternatively the central controller system 36 ) periodically communicates with each customer household to provide information on available music and program/pricing information.
- data transmission is achieved utilizing geostationary satellites operating in the KU band that are downlinked to conventional receiving antennae or dishes located at the customer households.
- EchoStar's DISH network launched an additional satellite in September 1999 (its fifth satellite) that, in combination with its previous satellites, provides continuous transmission of greater than five hundred channels to substantially the entire continental United States. EchoStar now has satellites located in the 119, 110, 61.5 and 148 positions within the Clark Belt.
- EchoStar's new “DISH 500” system utilizes an elliptical twenty inch antenna or dish containing two LMBS heads that can receive information from two different satellites simultaneously. As mentioned above, this system permits greater than five hundred channels to be directly broadcast to each customer household.
- the invention utilizes the EchoStar system, most preferably the DISH 500 system, for data transmission at either real time or time-compressed transmission rates, discussed below.
- the invention may be implemented utilizing the Hughes (DSS) system, or a combination of both the Hughes and EchoStar systems (resulting in a relatively smaller portion of each system's total capacity being devoted to the invention's music distribution).
- EchoStar's DISH 500 system provides a very high band width of approximately 4 megabits/sec for each channel (23 megabits/sec per transponder), for a total transmission capacity of approximately 2000 megabits/sec for five hundred channels.
- implementation of the present invention may be carried out with higher power transponders (e.g., 240 watt transponders) to increase the effective transponder capacity (e.g., from 23 megabits/sec to 30 megabits/sec) by reducing much of the capacity allotted for forward error correction and system management inherent in lower power transponders.
- higher power transponders e.g., 240 watt transponders
- the effective transponder capacity e.g., from 23 megabits/sec to 30 megabits/sec
- the invention may be carried out with quanternary (QPSK) polarization to double the effective bit transfer rate for each transponder over that which may be obtained by using current orthogonal polarization—with a sacrifice in bit error rate that is acceptable for those applications of the invention where lower video and audio resolution is not an important consideration to the customer.
- QPSK quanternary
- high power transponders e.g., 240 watts or higher
- higher level polarization e.g., quanternary
- music content providers deliver music in digital form to the central controller 36 of the music distribution system.
- the content is encoded utilizing an encoding technology that is well known in the art, such as interlaced coding techniques in combination with a unique header code that identifies each title.
- only the unique header coding is employed to identify each specific title.
- the header code can also identify the exact transmission time of each title.
- the header code containing transmission times can be digitally communicated to the operating system of the user stations 28 to prevent unauthorized reception and subsequent duplication of digital music content.
- selection of a specific title by the user can require a completed payment before activation of initial reception and storage of the digital music content, or before the digital music content is recorded on any other device or media.
- the encoded music content is scheduled and transmitted, to the direct broadcast satellite up-link facility 100 by the 'system operator through central controller 36 .
- periodic digital program/pricing information is transmitted to the up-link facility, for example, every ten minutes.
- direct broadcast satellite transmission currently operates in the KU Band, other frequencies can also be employed to achieve similar results.
- the music content can be transmitted at real or time compressed speeds. In preferred embodiments, music content is transmitted at faster than real time speeds, where real time speeds refer to the playback speed of the recorded music. For example, a single satellite transponder capable of 23 megabits/sec transmission can transmit a typical 4 minute song in less than 4 seconds, for example, in certain applications approximately 2 seconds per song utilizing high compression techniques.
- EchoStar's DBS programming capacity allows transmission of 400,000 to 500,000 song titles (approximately 30,000 to 40,000 CD's) during a four hour period (assuming 4 seconds per song), most preferably during a period of low viewership, e.g., 1:00 AM to 5:00 AM.
- Using a single transponder for blanket music transmission permits transmission of 500 to 600 CD's in a four hour period.
- the digital music content and program/pricing information once received by the appropriate satellite, are then transmitted down broadly (i.e., “blanket transmitted”) to geographic coverage areas where the user stations can receive the downlink transmissions.
- the music program and pricing information are received by the home user's satellite dish 110 and transmitted to download module 120 contained in the user station where it is decoded and stored digitally in storage module 130 also contained in the user station.
- the customer preselects music content to be downloaded by selecting the content utilizing the graphical user interface 135 shown on the TV screen.
- the order is communicated to central controller 36 by Internet or modem. Pricing information for the preselected music content is then transmitted to the billing module 140 contained in the user station where it is stored in nonvolatile memory such as SRAM for subsequent querying via the phone line by central controller 36 .
- the music content preselected by the customer is blanket transmitted by satellite 20 at the scheduled time and is received by the home user's satellite dish 110 .
- This music content is transmitted to download module 120 where it is decoded and stored digitally in storage module 130 .
- the user station 28 will also contain an audio speaker system (not shown) to allow the customer to “preview” the stored music before it is recorded permanently on a CD or other recordable medium and subsequently paid for.
- the preselected pricing information stored in billing module 140 will not be transmitted for payment to the system operator until the customer has either listened to the music content a set number of times, for example, 3 times, or the customer indicates via the graphical user interface that he wishes to permanently record it.
- previewing may be accomplished by playing a highly compressed “preview” copy through the customer's speaker system or headphones. Highly compressed material lacks richness, signal to noise ratio, stereo channels and high-frequency bandwidth.
- Preview can be communicated in perhaps 1% to 10% of the final copy depending upon the compression schemes used. Each preview has a brief section (20 seconds) of the real sound of the selection to allow the customer to really sample the material as well as generate interest in paying for a “good copy”. If desired, the preview material may be further hobbled with some simple distortion, added noise, limited low end, crackles and pops, voice overlay, missing sections, sliding notches, amplitude compression. Content providers may be given choice as to the nature of the hobbling beyond the heavy transmission compression.
- the graphical user interface prompts the customer to insert a recordable medium such as a writeable CD into the user station, or attach other recording device to the user station's output connectors.
- a recordable medium such as a writeable CD
- the customer may choose to record preselected music content multiple times. In such cases the music content provider may offer pricing discounts for multiple recordings.
- the user station records the preselected music content stored in the user station and then either deletes the music contained in storage module 130 once the recording has been completed or allows the customer to manually delete content no longer desired.
- the customer accesses (or navigates) the graphical user interface via a hand held remote.
- the remote control communicates via infrared LED transmitter to an infrared sensor contained on the user station.
- An optional keyboard can be utilized by the customer to access navigate) the graphical user interface via the same infrared sensor contained on the user station.
- FIG. 2 The above sequence of operation is summarized in FIG. 2 , which is largely self explanatory.
- the illustrated modes of operation, following account setup, are identified as:
- FIG. 3 illustrates another embodiment wherein the user station contains an Internet browser and processor that enables the customer to access the system operator's music Internet site via phone line or other Internet connection.
- Optional digital content/programming transmission links i.e., optional means for blanket transmitting music and other data
- These include, but are not limited to, cable, optical fiber, DSL and the Internet.
- Certain embodiments of the invention divide music into “tiers” of transmission frequency.
- the music may be divided into three tiers, with Tier 1 music (the most popular) being transmitted every 30 minutes, Tier 2 music every four hours and Tier 3 music (the least requested) being sent late night.
- Tier 1 music the most popular
- Tier 2 music every four hours
- Tier 3 music the least requested
- This assignment of music to appropriate tiers occurs on a daily or weekly basis.
- Other embodiments simply transmit all music once a day, for example during late night, off-peak hours.
- it may be desirable to actively manage the transmission schedules of music to maximize consumer satisfaction see FIG. 6 ).
- Active scheduling of music on an hourly basis allows maximizing consumer satisfaction by monitoring music requests from all or a subset of satellite receivers and appropriately scheduling transmissions of the music. This might mean having a fixed schedule for 90% of the next few hours of transmissions, but allocating the last 10% of bandwidth (or purchasing extra bandwidth) to send music that happens to be more popular that day. More popular music might happen due to quickly changing popularity demographics perhaps due to a news story, Internet review or cultural happenstance. The effect may be to move a selection to the maximum rate of transmission (e.g., every 15 minutes) or move a Tier 3 selection from an overnight transmission to an hourly transmission. Similarly, a Tier 1 selection that is poorly requested might be replaced.
- the mechanisms to handle active scheduling rely on knowing what selections are currently being requested.
- Current satellite receivers operated by EchoStar and Hughes communicate by modem with central computers on varying schedules.
- modem connections are infrequent and credit is extended to the customer so that a receiver can order six or eight movies before requiring connection to the billing computers.
- individual receivers might be contacted (“pinged”) by the billing computers on a daily basis to check for usage.
- Active scheduling of music transmission times requires that all or part of the satellite receivers contact the central computer whenever an order is placed. This communication would occur over phone modem, cable modem or Internet and may be initiated without the customer's knowledge.
- Copies of order records in the central computer must be transferred to a computing system that schedules transmissions, and then schedules must be communicated to the system that feeds music (or video) to the satellite uplink transmitters. If desirable, transmission schedule information can be updated on the consumer interface as soon as schedules are revised, perhaps allowing a consumer to imagine that their order has prompted the system to send a selection more frequently. Schedules are only a fraction of a megabyte in size and may be sent very frequently without significantly impacting bandwidth.
- the top requested music (e.g., new releases and other recordings that are currently most popular) are blanket broadcast (“streamed”) every hour.
- a customer uses the graphical user interface to select one or more of these recordings for downloading.
- the customer leaves the channel of his DBS (or cable) receiver on the designated “music channel” until the requested recording is downloaded to intermediate storage in storage module 130 .
- the customer user interface flashes a cue such as “YOU'VE GOT TUNES”, following which the customer may permanently record the music, with automatic billing that appears on the customer's consolidated monthly statement.
- This hourly transmission of top requested recordings may be achieved by utilizing one quarter of a DBS system transponder (or corresponding cable bandwidth) so that top songs are always available during the day with minimal wait for downloading.
- the recordings may be available as full CD length recordings or single songs.
- a second blanket transmission of music occurs as a “batch stream” at night, for example, from 12:00 AM to 8:00 AM.
- Customers select music from the download catalog and the system operator collects these selections each evening and uses the information to batch stream the music payloads which may be dynamically created to fulfill the orders.
- the batch stream music is broadcast and stored in each customer's user station (set top box) and the customer sees a designation such as “YOU'VE GOT TUNES”.
- music is stored in intermediate storage (storage module 130 ) until it is overwritten, recorded or deleted.
- billing is consolidated into the customer's monthly statement.
- the night time batch stream of music may also be achieved with an appropriate dedicated bandwidth, for example, one quarter of a DBS transponder. This technique allows for a larger daily download catalog to be provided in customers' homes. As mentioned, the customers are informed when they have new music, each time they “surf” channels on their DBS (or cable) system.
- the DBS (or cable) receiver is left on the designated music channel until the requested recording is downloaded.
- this scheme may be carried out with a receiver having a microprocessor permitting the receiver to play one channel for viewing on the television while simultaneously downloading customer requested recordings from the music channel.
- the capability of permitting simultaneous television viewing and music downloading via separate channels in the DBS (or cable) receiver is readily achievable by provision of a microprocessor having sufficient processing speed.
- storage module 130 of user station 28 includes an intermediate music storage medium (e.g., a hard drive) that stores each music recording that the customer selects for downloading until such time as the customer either makes (and pays for) a permanent copy of the recording (e.g., via a CD burner), the customer deletes the recording from memory, or the recording is written over when the storage medium's capacity is reached (e.g., on a “first in, first out” basis).
- an intermediate music storage medium e.g., a hard drive
- a user station 28 in the form of a DBS (or cable) system “set top box” may have a disk drive with a storage capacity on the order of 17 Gigabytes, with 8 Gigabytes devoted to the intermediate music data storage function of storage module 130 .
- This 8 Gigabyte storage medium permits the storage of approximately 80 compressed CD's at all times in each customer's user station. The customer, therefore, at all times has immediate on-demand access to the approximately 80 CD's in his storage module for permanent recording on his recorder (e.g., CD burner).
- Music on the hard drive can be stored in encrypted format to prevent loss.
- one advantage of a large storage capacity at storage module 130 is that a customer may download a significant number of recordings for “previewing” as described above, and maintain those recordings in intermediate storage for a considerable period of time before having to make a decision on whether to make (and pay for) permanent copies.
- this large intermediate storage capacity opens up other possibilities, as well.
- the system operator may automatically (i.e., without requiring customer preselection) download certain very popular recordings to every customer storage module on a periodic basis, such as 1 to 10 featured CD's every day.
- an 80 CD storage capacity and a “first in, first out” write-over protocol would permit each automatically downloaded CD to remain in the intermediate storage of storage module 130 and available for on-demand permanent recording for approximately 15 days, with the exact time depending upon how many customer-selected recordings are downloaded during that period.
- the system operator may automatically make available (at 5 automatic downloads per day) 75 popular recordings for all customers, without the customers having to preselect anything.
- the preselection option for all catalog music remains available at all times.
- the automatic downloading of recordings to all customer user stations can be readily achieved by the system operator simply communicating (e.g., daily) to all user stations the ID header information for that day's automatically downloaded recordings.
- the user station downloads recordings to the intermediate storage in storage module 130 just as if the recording had been preselected by the customer.
- the graphical user interface alerts the customer that the recordings are available by a cue such as “YOU'VE GOT TUNES”.
- different sets of recordings are automatically downloaded at customer user stations according to the music preferences of the customer. For example, each customer may use the graphical user interface (see FIG. 9 ) to select those music styles (e.g., classical, country, new age) they most prefer.
- the system operator uses this information to tailor the automatic downloads to that customer's user station accordingly.
- the system operator may create, for example, 10 to 20 standard customer profiles so that each customer receives automatic downloads for the one of those profiles which he most closely matches.
- the objective is for the intermediate storage to have available for on-demand recording a large percentage of the recordings that any particular customer may be interested in at any given time—or at least have those recordings available to the customer over a period of time as new entries into intermediate storage overwrite older entries, recognizing that at all times the customer is free to order any music selection from the catalog.
- the system operator may create, for example, 10 to 20 customer profiles and assign each customer to one of these profiles according to music preference information entered by the customer. Thereafter, the customer receives (e.g., daily) the set of automatically downloaded recordings for his particular profile category.
- customer preference information may also be used in a more sophisticated fashion to tailor the profiles to the individual tastes of a customer or the tastes of the customer household family members.
- the customer may use the graphical user interface ( FIG. 10 ) to enter music preferences at a desired level of detail. As shown in FIG. 10 , a first level of detail is the selection of one or several styles of music (similar to the selection made in connection with FIG. 9 ).
- each selected style may be further subdivided by, for example, female artists, male artists, top twenty artists this month, top twenty songs this month, etc.
- a third level of selection permits identification of specific artists.
- Other means for subdividing interest areas under a particular style of music e.g., jazz/saxophone, classical/opera/tenors.
- this information may be used alone, or in conjunction with other information, to permit the customer's user station to download to intermediate memory (e.g., 80 CD capacity) an ongoing, rolling selection of recordings that will most likely match the preferences of the customer.
- FIG. 11 there is shown a block diagram that illustrates in schematic form the generation and use of customer preference information.
- FIG. 11 shows portions of user station 28 , namely, the download module 120 with receiver and the storage module 130 for intermediate music storage.
- the recorder for permanently recording music e.g., CD burner
- apparatus 210 serves to read the ID headers on all of the broadcast music recordings and select for downloading only those that are indicated as being desirable to the customer by the processed music preference information.
- FIG. 11 also shows portions of central controller 36 that store and analyze customer preference information and customer order information, and generate from that information the individualized “customer catalog” that determines which recordings will be automatically downloaded at that customer's user station.
- controller 36 includes an individual customer preference information storage module 220 , a general population cluster preference database 230 and a customer catalog generator module 240 .
- Each customer's preference information is entered in the manner described above via the graphical user interface and is communicated to module 220 by phone/modem.
- the preference information of the entire customer population (or some subset thereof), as well as order data is stored in module 230 .
- Information from modules 220 and 230 is analyzed to create an individual “customer catalog” for each customer via module 240 .
- the individual customer catalog data is communicated to the user station in each customer household and serves to assure that those recordings that best fit the preference customer profile are the ones that are downloaded to storage module 130 . While a first-in, first-out protocol may be used for overwriting onto the hard drive of module 130 , the customer catalog information may serve to establish a different protocol that will overwrite the less likely to be purchased recordings ahead of those recordings which, by analysis at module 240 , show more promise of being purchased. Certain new release recordings in high demand within the customer's primary areas of interest may be designated to remain in intermediate storage for a minimum period of time, say one week, regardless of the “traffic” through storage module 130 .
- FIG. 12 is a block diagram showing how the customer profile information is also used to assist in dynamically creating nightly music payloads.
- FIG. 13 shows the use of promotion-based streaming to download recordings at customer user stations.
- a content provider e.g., record label
- the system operator packages the advertisements and music and then broadcasts them for automatic downloading by all customers or by a selected group of customers based on the broad profile information developed by the operator (FIG. 11 ).
- the promotional music is advertised to the customers through an advertisement (see top right corner of FIG. 10 ) or by a flashing message such as, “YOU'VE GOT NEW TUNES”. Promotional music is stored in intermediate storage until it is purchased, overwritten or deleted. As with the other means of purchasing music, once the customer permanently records, the billing is consolidated in the customer's monthly statement.
- Promotional-based streaming may be accomplished typically in a relatively short period of time using appropriate bandwidth (e.g., one quarter transponder).
- Promotions may include movie soundtracks for movies that are being broadcast by DBS or cable.
- the soundtrack is broadcast and automatically downloaded to all user stations.
- viewers of the movie are informed that the soundtrack for the very movie they are viewing is on their hard drive and available for immediate on-demand purchase.
- Purchases may be made during the movie by appropriate means; for example, a translucent icon may appear on the screen and purchase made by simply clicking on the icon. Or, the purchase can simply be made at the conclusion of the movie where, preferably, viewers are reminded that the soundtrack is available on their hard drive for on-demand purchase.
- FIG. 14 shows how an automated CD production facility coupled with a “quick-ship overnight” delivery operation may be used for low volume CD's (i.e., CD's not frequently requested) or for customers who do not have their own CD burner. (Further details of the operation of the facility are discussed later in the specification.)
- a customer selects a recording from the quick-ship catalog or a selected recording is designated by the system operator for quick-ship due to low demand that does not justify broadcast
- the system operator collects the requests in the evening and then burns in the requested CD's for each order and packages them with color CD jackets.
- the CD's are shipped to the customers overnight and billing is consolidated into the customer's monthly statement.
- Advantages of the quick-ship overnight option include the ability to provide CD's without utilizing bandwidth and the provision of the full music catalog that comprises millions of songs, many of which cannot be broadcast.
- FIG. 15 is a chart listing the above-described music delivery schemes and showing their respective availability status with respect to customers with and without CD burners.
- Satellite receivers do not have perfect reception due to the tradeoff between electrical power and bandwidth of the satellite. Weather conditions, motion of atmosphere layers or obstructions between the dish and the satellite may interrupt the signal. A momentary loss of bits will cause a TV image to freeze for a frame or two, while longer interruptions will cause reception to blank. Whereas a short loss in video is a couple of frozen frames, data loss in audio may leave a glaring blank in the music. Therefore, a satellite system for transmission of audio or software (or video) CD's requires a method to detect and fix data losses at the receiver.
- Patching data “potholes” requires a method for sensing potholes and another for placing asphalt to fill them.
- digital data is sent in packets of bits (perhaps one thousand bits at a time with each packet containing 1/40 second of music). Loss of bits within a packet can be detected by error codes or merely a “checksum” at the end of the packet which indicates the sum of all the sent bits.
- Each packet may have an identifying number so that loss of an entire packet is noticed. This is all conventional Internet technology.
- Repairing data loss might be accomplished by replacing an occasional packet by the receiver asking for a copy of the packet via an Internet or modem phone connection.
- the frequency of data loss and amount of contiguous data might be lost (for instance, during a rainstorm), requires a wider bandwidth, like the satellite, to provide the material to repair data loss.
- the present invention provides the capability in the system to detect bill losses and receive a second copy of the selection and use all or part of that copy to patch the missing or corrupted bits or packets in the original download. This would require storing a requested download on the storage medium (e.g., hard drive), checking for missing data, informing the customer that the download was imperfect (allowing the customer to burn a CD, listen to a preview or wait for a second transmission), then receiving and storing all or part of a second (or rarely a third) transmission, and then selecting good packets of bits to make up the final copy.
- the storage medium e.g., hard drive
- a customer selects a CD via the TV-remote interface and the TV screen notes a download, say, 45 minutes later. As soon as the download is completed, the customer is informed of the quality of the download (A, B, C, D) and informed of the time of the next transmission of the material. The customer is then allowed to preview the corrupted version, or even burn a CD if they wished.
- a central facility may be provided to manufacture low-volume CD's (i.e., CD's that are not frequently requested) and distribute them by ground transportation.
- a system of the invention that includes such a production facility carries low-volume products from record company master music libraries to meet the needs of those companies to sell all of their archives. Typical satellite costs may require at least 5 to 10 purchases per satellite transmission to pay for the transmission costs.
- Backing satellite transmission with shipped CD's also provides CD's for locations where poor satellite reception makes it difficult to get a clean CD download, or to people who do not have a dish.
- the automated burner facility is arranged to manufacture low-volume CD's (i.e., CD's that are not frequently requested) and distribute them by ground transportation.
- a system of the invention that includes such a production facility carries low-volume products from record company master music libraries to meet the needs of those companies to sell all of their archives. Typical satellite costs may require at least 5 to 10 purchases per satellite transmission to pay for the transmission costs.
- the threat of piracy can be controlled through a music distribution system that uniquely labels every legal CD copy of music (or video) with an “ID tag”.
- ID tag may be contained in each song of a CD protecting each complete piece of artistic material.
- the ID tag may be as simple as an inaudible millisecond blip at the start of each selection or may be “woven” into the music so that it survives re-recording and compression schemes by being integral to the music, but not noticeable to the listener or easily discovered and removed by potential pirates.
- Multiple hidden tags may be used to discourage attempts to remove the code by comparing multiple legal copies of the music.
- multiple tags also provide the advantage of identifying illegal copies in those cases where a pirate successfully removes some, but not all, of the tags. At worst, a pirate may successfully remove part of the tags making it possible to determine that the music copy is illegal, but without identifying the original purchaser.
- Two major venues contemplated for distribution of protected CD's are the Internet and satellite.
- a customer contacts an Internet site where they purchase the CD.
- the site places ID Tags in the music or video selected, then compresses the selection and sends it to the purchaser.
- the purchaser then de-compresses (inflates) the selection and stores it on his hard drive or writes it to a blank CD for later playing.
- satellite distribution a customer contracts over a phone or Internet connection to purchase a particular CD. At scheduled times, perhaps once a day, the satellite company compresses this CD, encrypts it and then blanket broadcasts it.
- the customer's receiver (e.g., user station 28 , above) stores the transmission and then de-encrypts it using a system and key supplied by the satellite company, and then that same system encodes an ID tag in the music (or soundtrack) using a tag number downloaded from the satellite company during the purchasing transaction.
- Both the Internet delivery system and the satellite delivery system create a customer CD that may be played on any conventional CD player.
- Both the Internet and satellite distribution systems archive the ID tag information with the customer's identity and perhaps other aspects of the transaction. This data may be sent back to the original content provider or to another company specializing in detecting and prosecuting pirates.
- each CD has a unique ID tag encoded before it is distributed to the store.
- the CD case has a bar code associated with the ID Tag. At the time of purchase the bar code is associated with a customer's charge card or identity. This information is then sent back to the CD manufacturer.
- an ID tag uniquely identifies each copy of music or video.
- a 10 digit (37 bit) tag may be stored in three 16-bit samples ( 1/12,000 of a second long) on a CD.
- a three-byte tag number equivalent to full volume is a barely perceptible pop to young, sensitive ears and is completely inaudible to the majority of the population.
- the tag may be woven into the frequency or time spectrum of the music, where it is both inaudible and survives compression and transmission, or even serious attempts by hackers to remove the tag. While the simple tag may be appropriate for certain applications, more complex tags may be desired for other applications, especially for high-profit, piracy-prone contemporary music (or video).
- a simple tag may consist of three 16-bit numbers placed at the start and/or end instant of a CD or each of its songs.
- the 37 bits may be carried by the 64 bits of the first four samples at the beginning of the CD and encoded to have low amplitude or alternating polarity to further hide its audible presence from consumers.
- Such a tag may be easily read by a computer and is not difficult to eliminate when making copies.
- the technical nature of tag removal coupled with the legal implications of distributing software capable of destroying the tag serves as a significant deterrent to general piracy.
- the complex ID tag is inaudible by humans, yet is sufficiently integral to the music (or video) that it remains during simple filtering or compression operations.
- the ID tag may be a multidigit number (or collection of bits) that can be read or recovered from the CD by those who originally placed the tag. Examples of tags are low bit-rate encoding in low amplitude, increase or reduction of high frequency music content, short-duration ratios of harmonic components, background sounds, slight shortening or lengthening of sustained sounds, or even localization cues or echoes for a sound object. Key to “hiding” the sounds is to encode the bits as short duration shifts in the sounds, shifts that are preserved during compression but that are not detectable by normal human hearing or attention. In other words, it is desirable to take advantage of the parts of the music that have “excess information” coded during sound compression that is not noticed by humans.
- additional information may be used in reading the tag that is not contained in the CD.
- This information describes where the real (or perhaps false) ID tags are to be placed, and what the nature of the bit encoding is at that location.
- the simplest form of location would be milliseconds from the start or end of the song for each bit.
- time from a particular feature in a song like milliseconds after the attack greater than 20 dB about 23 seconds into the song, could be used to identify the location of one bit of an ID tag.
- many bits are also encoded that obscure the actual tag bits. Real and actual bits may be different or interchanged among different legal copies of a song.
- the ID tag is a unique identifying number, ID number, that is placed at the start, end or between selections on a copy of the CD when it is produced for the consumer.
- ID number a unique identifying number might be placed on each CD as it is manufactured and later associated with a customer name or credit card during a store purchase.
- the ID number might be inserted during the process of writing a CD with music that is downloaded from a satellite or the Internet. In this case, the software accomplishing the transaction to purchase the music also sees that the ID number is obtained from the seller and places this ID number at appropriate places in the CD during the recording process.
- the ID tag when a legal CD is distributed over the Internet, via direct satellite transmission or even CD's that are manufactured for sale in CD stores, preferably two blocks of information are involved.
- the first block called the “located data”, is an encrypted description of all the locations in the music to contain the entire or part of the ID tag, and the encoding techniques used for each location in which false or real bits of the ID tag will be placed.
- the location data is used in creating or reading the ID number but is not stored on the CD.
- the second block of information, called the ID number is a unique number identifying the legal transaction.
- the ID number may be a customer identification number, like a credit card or phone number, or customer purchasing account number, or may be a seller generated transaction number.
- Time domain tags may involve changing an aspect of a time-domain feature like the decay time for a note, whereas frequency domain features such as amplitude of an overtone would be better inserted in a frequency domain transform like the fast Fourier transform used to do MPEG compression.
- frequency domain features such as amplitude of an overtone would be better inserted in a frequency domain transform like the fast Fourier transform used to do MPEG compression.
- the amount of computer speed needed to insert frequency domain tags has only been recently available in consumer computers.
- Location data is communicated to a “home music factory” (e.g., user station 28 ) as encrypted information sent with the compressed music. If an ID number were 10 digits (about 33 bits) long then perhaps just 33 or several hundred locations would be contained in the location data. Software may accomplish this task at the site of music distribution, picking regions of the sound that are suitable for hiding bits within, or trial bits may be encoded by software with trained observers, perhaps the person who mixed or originated the music confirming that the music was not degraded by the inclusion of the bits.
- ID numbers would be contained in the music factory as a standard ID number or as a number securely given to the purchaser during the purchase transaction. One number might be given for a whole CD or individual numbers for each song on the CD might be given.
- the customer's security information should not only contain the location data and ID tag but instructions for creating each type of encoding of a bit in the fabric of the music. Types and encoding of bits may be kept secret so that the search and removal of encoded ID's will be more difficult. It is also likely that types of encoded cues will evolve over time.
- a unique ID tag can be encoded in the manufacture of a CD for sales in a store as well as a bar coded copy on the CD box allowing association of a purchaser's identity (or credit card number) with that legal copy.
- CD's delivered in compressed form over the Internet can have the complex tags woven into the audio at the delivery end. Complex tags can be designed that are not affected by the compression-decompression process.
- a simple ID tag consisting of three two-byte samples could easily, but illegally, be eliminated during a piracy operation with the proper software.
- the more complex encoding schemes are very difficult to find in order to eliminate or change it.
- Hints of types of acceptable encoding come from knowledge of what aspects of sound are most carefully attended by humans. For example, quick rise-times or strong attacks are carefully processed for localization cues, and frequency or pitch can be sensed with great accuracy by some persons.
- the literature on the development of music compression algorithms contains discussions of what aspects of music must be carefully preserved and what is less noticed but nevertheless kept due to the need to preserve other, similar, features in the encoding.
- ID tag/watermarking methods that are inaudible features that extend across blocks and are therefore to be unaffected by compression.
- Current audio watermarking techniques convey information by putting notches in high frequency sounds, low amplitude sounds spectrally adjacent to louder tones, influencing least significant bits of encoding and short echoes.
- Known watermarking techniques place marks within the single blocks of sound to be compressed.
- security of the music may be enhanced by periodically changing the encryption keys.
- 1024 bit RSA encryption keys may be used and changed periodically, with the changes being downloaded to the satellite receivers of the customers.
- the music distribution system operator interfaces with three parties, the data transmission provider, the content providers, and consumers.
- the content providers provide content to the data transmission provider which, in turn, blanket transmits the content to the consumers, preferably by direct broadcast satellite.
- the satellite transmission also includes content availability/scheduling data and content pricing data, updated periodically.
- the content providers also provide copyright license and pricing requirements to the music distribution system operator.
- Both the data transmission provider and the content providers receive payments directly from the music distribution system operator.
- the music distribution system operator periodically receives information for billing, while also sending enabling commands to the consumers.
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Abstract
Description
- 1. Selection
- 2. Ordering
- 3. Downloading
- 4. Decoding
- 5. Previewing
- 6. Playing
- 7. CD Delivery.
-
- a. takes orders from receivers with modems or via an Internet site;
- b. has electronic access to the music libraries of the satellite system via Internet or local storage;
- c. has totally automated CD burners, CD painters, jacket printers, packaging, labeling, shipping and billing;
- d. encodes ID tags/watermarks in all manufactured CD's to deter illegal copying; and
- e. is located at a single central or multiple regional locations.
Because each CD is manufactured upon request from blank writeable CD's, totally automated production and distribution is possible resulting in low production and distribution costs compared to a typical CD store. The facility may also manufacture music recordings on other media such as DVD's, MD's and other digital media. Additionally, the facility could manufacture videos and software.
-
- a. it is necessary to convey only a couple of dozen bits in a song;
- b. an entire song may be held and processed at once in memory (e.g., hard disk) with substantial processing power being available to do the watermarking; and
- c. the location and nature of the watermarking sites can be kept confidential.
According to the invention, ID tags/watermarks may be based upon undetectable changes, located by features in the referenced to the rough length of the piece. These features may be subtle in the texture of the music, like relative amplitude between channels of a narrow range of frequencies, or duration of time between features. While the ear is very sensitive to time interaurally or as a component of the onset of a sound, time is looser with respect to time between features in the music, yet time is precisely preserved by compression techniques. It is theoretically possible to time the duration between two attacks to 20 microseconds. In practical terms, noticing a 50% rise in a 500 Hz attack may be timed to less than 200 microseconds. In contrast the time scale that humans perceive the timing of sequential events is in the range of 10 milliseconds (10000 microseconds), opening a 50:1 window for encoding and perceiving slight timing shifts that carry an ID tag. Attacks may be used because they are both easy to detect and have sharp temporal features allowing accurate determination of time to make interval measurement more precise. In practice, ten digits may be encoded between 10 to 30 attacks by slightly lengthening the duration of sound between attacks without any alterations in pitch. To accomplish this task, software must recognize the existence of attacks and simple decays that can be extended. In some sorts of music, like single instrument works, this is simple. Other types of music typically require more work to achieve without any perceptible alteration in the music. In this regard, vocoder technologies that can stretch time without altering pitch provide existing techniques for accomplishing this. After a pair of attacks had been located in the music, these locations are measured as a fraction of the duration of the entire selection. The length of the delay encodes one or several bits of the ID tag. Then an appropriate length of the music between the two attacks is lengthened the desired amount, say 500 microseconds. The lengthening preferably is applied to all channels of the music. To read an ID tag, the original pairs of attacks are approximately located as a fraction of the duration of the whole selection. Then the attacks are exactly located by moving forward several milliseconds in the altered music until they are recognized and their positions pinpointed. The duration between is measured and compared to the original amount. Added or removed time codes individual bits or digits. Subsequent pairs may be located relative to earlier skewed pairs.
Claims (33)
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