CA2202725A1 - Video storage - Google Patents
Video storageInfo
- Publication number
- CA2202725A1 CA2202725A1 CA002202725A CA2202725A CA2202725A1 CA 2202725 A1 CA2202725 A1 CA 2202725A1 CA 002202725 A CA002202725 A CA 002202725A CA 2202725 A CA2202725 A CA 2202725A CA 2202725 A1 CA2202725 A1 CA 2202725A1
- Authority
- CA
- Canada
- Prior art keywords
- data
- regenerated
- disk
- written
- derived
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1076—Parity data used in redundant arrays of independent storages, e.g. in RAID systems
- G06F11/1092—Rebuilding, e.g. when physically replacing a failing disk
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1833—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- 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
- G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/21815—Source of audio or video content, e.g. local disk arrays comprising local storage units
- H04N21/2182—Source of audio or video content, e.g. local disk arrays comprising local storage units involving memory arrays, e.g. RAID disk arrays
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/40—Combinations of multiple record carriers
- G11B2220/41—Flat as opposed to hierarchical combination, e.g. library of tapes or discs, CD changer, or groups of record carriers that together store one title
- G11B2220/415—Redundant array of inexpensive disks [RAID] systems
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/34—Indicating arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N11/00—Colour television systems
- H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
- H04N11/20—Conversion of the manner in which the individual colour picture signal components are combined, e.g. conversion of colour television standards
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/78—Television signal recording using magnetic recording
- H04N5/781—Television signal recording using magnetic recording on disks or drums
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/93—Regeneration of the television signal or of selected parts thereof
- H04N5/94—Signal drop-out compensation
- H04N5/945—Signal drop-out compensation for signals recorded by pulse code modulation
Abstract
Video data in the form of a plurality of digitised frames, is stored on a plurality of magnetic disks. Each image frame is striped across a plurality of disks and redundant parity information, derived from the stripes, is written to an additional disk. Disk failure is detected and in response to this detection missing data is regenerated from the parity information. This allows the transfer of video data in real time to be maintained for output so that the system remains operational. While data is being read in real time, derived from regenerated data, the regenerated data is written to an operational disk, thereby reprotecting the data in the event of a subsequent failure. Frame supplied to output are labelled as being protected or unprotected and application programs may respond to this status information as considered appropriate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002394909A CA2394909C (en) | 1996-04-15 | 1997-04-15 | Data storage |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1546896P | 1996-04-15 | 1996-04-15 | |
US60/015,468 | 1996-04-15 | ||
GBGB9619120.0A GB9619120D0 (en) | 1996-09-12 | 1996-09-12 | Data storage |
GB9619120.0 | 1996-09-12 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002394909A Division CA2394909C (en) | 1996-04-15 | 1997-04-15 | Data storage |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2202725A1 true CA2202725A1 (en) | 1997-10-15 |
CA2202725C CA2202725C (en) | 2003-05-20 |
Family
ID=26310038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002202725A Expired - Fee Related CA2202725C (en) | 1996-04-15 | 1997-04-15 | Video storage |
Country Status (3)
Country | Link |
---|---|
US (2) | US6404975B1 (en) |
CA (1) | CA2202725C (en) |
GB (1) | GB2312319B (en) |
Families Citing this family (62)
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---|---|---|---|---|
GB2312319B (en) * | 1996-04-15 | 1998-12-09 | Discreet Logic Inc | Video storage |
GB9619120D0 (en) * | 1996-09-12 | 1996-10-23 | Discreet Logic | Data storage |
WO1999004564A1 (en) * | 1997-07-18 | 1999-01-28 | Sony Corporation | Data recording device, data recording/reproducing device, data recording method, and data recording/reproducing method |
US6374336B1 (en) | 1997-12-24 | 2002-04-16 | Avid Technology, Inc. | Computer system and process for transferring multiple high bandwidth streams of data between multiple storage units and multiple applications in a scalable and reliable manner |
US6415373B1 (en) | 1997-12-24 | 2002-07-02 | Avid Technology, Inc. | Computer system and process for transferring multiple high bandwidth streams of data between multiple storage units and multiple applications in a scalable and reliable manner |
US6226038B1 (en) | 1998-04-03 | 2001-05-01 | Avid Technology, Inc. | HDTV editing and effects previsualization using SDTV devices |
US6229576B1 (en) | 1998-04-03 | 2001-05-08 | Avid Technology, Inc. | Editing system with router for connection to HDTV circuitry |
TW456148B (en) | 1998-06-16 | 2001-09-21 | United Video Properties Inc | Interactive television program guide with simultaneous watch and record capabilities |
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JP4386694B2 (en) | 2003-09-16 | 2009-12-16 | 株式会社日立製作所 | Storage system and storage control device |
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JP4598387B2 (en) | 2003-09-17 | 2010-12-15 | 株式会社日立製作所 | Storage system |
JP4307202B2 (en) | 2003-09-29 | 2009-08-05 | 株式会社日立製作所 | Storage system and storage control device |
JP4307964B2 (en) | 2003-11-26 | 2009-08-05 | 株式会社日立製作所 | Access restriction information setting method and apparatus |
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JP2005202893A (en) | 2004-01-19 | 2005-07-28 | Hitachi Ltd | Storage device controller, storage system, recording medium recording program, information processor, and method for controlling storage system |
JP4634049B2 (en) * | 2004-02-04 | 2011-02-16 | 株式会社日立製作所 | Error notification control in disk array system |
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-
1997
- 1997-04-11 GB GB9707419A patent/GB2312319B/en not_active Expired - Fee Related
- 1997-04-14 US US08/843,282 patent/US6404975B1/en not_active Expired - Lifetime
- 1997-04-15 CA CA002202725A patent/CA2202725C/en not_active Expired - Fee Related
-
2002
- 2002-03-13 US US10/096,565 patent/US6826778B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2202725C (en) | 2003-05-20 |
GB9707419D0 (en) | 1997-05-28 |
US6826778B2 (en) | 2004-11-30 |
US6404975B1 (en) | 2002-06-11 |
GB2312319A (en) | 1997-10-22 |
US20020094195A1 (en) | 2002-07-18 |
GB2312319B (en) | 1998-12-09 |
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