CA2547440A1 - Synchronized data transfer system - Google Patents

Synchronized data transfer system Download PDF

Info

Publication number
CA2547440A1
CA2547440A1 CA002547440A CA2547440A CA2547440A1 CA 2547440 A1 CA2547440 A1 CA 2547440A1 CA 002547440 A CA002547440 A CA 002547440A CA 2547440 A CA2547440 A CA 2547440A CA 2547440 A1 CA2547440 A1 CA 2547440A1
Authority
CA
Canada
Prior art keywords
subchunk
transmit
node
message
processor
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
Application number
CA002547440A
Other languages
French (fr)
Other versions
CA2547440C (en
Inventor
Steven W. Rose
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INTERACTIVE CONTENT ENGINES LLC
Original Assignee
Interactive Content Engines, Llc
Steven W. Rose
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Interactive Content Engines, Llc, Steven W. Rose filed Critical Interactive Content Engines, Llc
Publication of CA2547440A1 publication Critical patent/CA2547440A1/en
Application granted granted Critical
Publication of CA2547440C publication Critical patent/CA2547440C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/612—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for unicast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H04L67/62—Establishing a time schedule for servicing the requests
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • 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
    • 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
    • H04N21/21825—Source of audio or video content, e.g. local disk arrays comprising local storage units involving removable storage units, e.g. tertiary storage such as magnetic tapes or optical disks
    • 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
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
    • H04N21/2312—Data placement on disk arrays
    • H04N21/2315—Data placement on disk arrays using interleaving
    • 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
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
    • H04N21/2312—Data placement on disk arrays
    • H04N21/2318—Data placement on disk arrays using striping
    • 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
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/232—Content retrieval operation locally within server, e.g. reading video streams from disk arrays
    • H04N21/2326—Scheduling disk or memory reading operations
    • 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
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
    • H04N21/2405—Monitoring of the internal components or processes of the server, e.g. server load
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17318—Direct or substantially direct transmission and handling of requests
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/10015—Access to distributed or replicated servers, e.g. using brokers

Abstract

A synchronized data transfer system (200) including storage processor nodes (103), a backbone communication switch 101, multiple titles subdivided into subchunks (113a) - (113e) and distributed across the nodes, a user process (207) executed on a first node (201), a transfer process (215) executed on a second node (203), and a management process (219) executed on a management node (205). The user process sends a timestamped read request to request a corresponding subchunk. The transfer process sends a message to the management process for each received read request, where each message identifies source and destination nodes. The management process broadcasts transmit commands to initiate sequential transmit periods, receives the messages, and selects from among the received messages to ensure that each node sends or receives only one subchunk during each transmit period. The management process sends a transmit request for each selected message, and the transfer process sends a subchunk identified by a transmit request in response to the transmit command.

Claims (24)

1. A synchronized data transfer system, comprising:
a plurality of processor nodes;
a backbone network switch coupled to said plurality of processor nodes to enable communication between said plurality of processor nodes;
a plurality of storage devices distributed across said plurality of processor nodes and storing a plurality of titles, each title divided into a plurality of subchunks that are distributed across said plurality of storage devices;
a plurality of transfer processes, each executed on a corresponding one of said plurality of processor nodes and operative to send a message for each subchunk that is to be transferred from a local storage device to a destination processor node, each message including a source node identifier and a destination node identifier; and a synchronous switch manager process, executed on at least one of said plurality of processor nodes, which periodically broadcasts a transmit command to initiate each of a plurality of sequential transmit periods, which receives a plurality of messages, and, prior to each transmit period, which selects from among said plurality of messages to ensure that each processing node sends up to one subchunk and receives up to one subchunk during each transmit period, and which sends a plurality of transmit requests corresponding to selected messages; and wherein each transfer process which sent at least one message and which received a transmit request from said synchronous switch manager process identifying a corresponding subchunk sends said corresponding subchunk during the next transmit period initiated by a broadcasted transmit command.
2. The synchronized data transfer system of claim 1, wherein each of said plurality of messages comprises a timestamp and wherein said synchronous switch manager process prioritizes said plurality of messages based on timestamp order and sends said plurality of transmit requests in timestamp order.
3. The synchronized data transfer system of claim 2, further comprising:
a plurality of user processes, each executed on a corresponding one of said plurality of processor nodes and operative to send a plurality of timestamped read requests; and wherein each transfer process incorporates a timestamp from a corresponding timestamped read request into a corresponding message.
4. The synchronized data transfer system of claim 3, wherein said synchronous switch manager process organizes said plurality of messages into a ready message list in timestamp order, scans said ready message list in timestamp order just prior to each of said plurality of sequential transmit periods, and selects messages based on timestamp priority.
5. The synchronized data transfer system of claim 4, wherein said synchronous switch manager process selects a message if an identified source processor node has not already been selected for transmitting a subchunk during a following transmit period and if an identified destination processor node has not already been selected for receiving a subchunk during said following transmit period.
6. The synchronized data transfer system of claim 1, further comprising:
each of said plurality of transfer processes storing received subchunk read requests into a read request queue, each subchunk read request indicating a locally stored subchunk;
each of said plurality of storage devices reading subchunks identified in a local read request queue in physical order;
each of said plurality of processor nodes listing subchunks read successfully by a corresponding storage device into a successful read queue; and each of said plurality of transfer processes sending a message for each entry in a corresponding successful read queue to said synchronous switch manager process.
7. The synchronized data transfer system of claim 6, wherein each said subchunk read request comprises a timestamped read request, wherein entries in each said successful read queue are listed in timestamp order, and wherein each transfer process sends a message for each entry in a corresponding successful read queue in timestamp order.
8. The synchronized data transfer system of claim 6, further comprising:
each of said plurality of transfer processes removing an entry from a corresponding successful request queue in which said entry is associated with a subchunk identified by a corresponding transmit request; and a plurality of network transfer processes, each executed on a corresponding one of said plurality of processor nodes, and each operative to build network packets used to transfer an identified subchunk to a destination processor node in response to a transmit command.
9. The synchronized data transfer system of claim 1, wherein said network switch comprises a gigabit Ethernet switch with a plurality of ports, and wherein each of said plurality of processor nodes is coupled to a corresponding port of said network switch.
10. The synchronized data transfer system of claim 1, wherein said plurality of processor nodes includes a management node which executes said synchronous switch manager process.
11. The synchronized data transfer system of claim 1, wherein said plurality of processor nodes includes a first management node executing said synchronous switch manager process and a second management node executing a mirrored synchronous switch manager process.
12. A method of synchronously transferring distributed subchunks of data between a plurality of processor nodes coupled to a network switch, said method comprising:
periodically broadcasting, by a management process executed on at least one of the processor nodes, a transmit command to initiate each of a plurality of sequential transmit periods;
13 sending to the management process, by each processor node having at least one subchunk to send, a message for each subchunk to be sent, each message identifying a source processor node and a destination processor node;
selecting, by the management process, messages received from the processor nodes to ensure that each processor node sends up to one subchunk during a following transmit period and that each processor node receives up to one subchunk during the following transmit period;
sending, by the management process, a plurality of transmit requests, each transmit request sent to a processing node that had sent a corresponding message that was selected;
and transmitting, by each processor node receiving a transmit request, a subchunk identified by the received transmit request to a destination processor node in response to the following transmit command.
13. The method of claim 12, further comprising:
prior to said sending a message for each subchunk to be sent, timestamping each message;
said selecting comprising prioritizing based on timestamp order; and said sending a plurality of transmit requests comprising sending transmit requests in timestamp order.
14. The method of claim 13, further comprising:
sending, by at least one processor node, a plurality of timestamped read requests; and wherein said timestamping each message comprises incorporating a timestamp from a received timestamped read request into a corresponding message.
15. The method of claim 14, further comprising:
organizing, by the management process, received messages into a ready message list in timestamp order; and scanning, by the management process, the ready message list in timestamp order just prior to each transmit period.
16. The method of claim 15, wherein said scanning comprises selecting a message if the identified source processor node has not already been selected for transmitting a subchunk during the following transmit period and if the identified destination processor node has not already been selected for receiving a subchunk during the following transmit period.
17. The method of claim 16, wherein said scanning is completed when the entire ready message list has been scanned, or if all of the processor nodes have been selected to transmit a subchunk or if all of the processor nodes have been selected to receive a subchunk.
18. The method of claim 12, further comprising:
storing received subchunk read requests into a read request queue, each subchunk read request indicating a request for a locally stored subchunk;
reading, by a local disk drive, subchunks identified in the read request queue in physical order;

listing entries of subchunks read successfully into a successful read queue;
and said sending a message for each subchunk to be sent comprising sending a message for each entry in said successful read queue.
19. The method of claim 18, wherein each subchunk read request comprises a timestamped read request, wherein said listing entries of subchunks read successfully into a successful read queue comprises listing entries in timestamp order, and wherein said sending a message for each entry in said successful read queue comprises sending messages in timestamp order.
20. The method of claim 18, further comprising:
removing an entry from the successful request queue that is associated with a subchunk identified by a corresponding transmit request; and building network packets used to transfer the identified subchunk to a destination processor node in response to a transmit command.
21. The method of claim 12, further comprising executing the management processor on a first management node and executing a mirrored management process on a mirrored management node which mirrors the first management node.
22. A synchronized data transfer system, comprising:
a plurality of storage processor nodes including first and second user nodes and a management node;
a backbone communication switch coupled to said plurality of storage processor nodes;
a plurality of titles each subdivided into a plurality of subchunks which are distributed across said plurality of storage processor nodes;
a user process, executed on said first user node, which sends a plurality of timestamped read requests, each timestamped read request for requesting a corresponding subchunk;
a transfer process, executed on said second user node, which sends a message for each received timestamped read request requesting a locally stored subchunk, each message including a source node identifier and a destination node identifier; and a management process, executed on said management node, which periodically broadcasts a transmit command via said switch to initiate each of a plurality of sequential transmit periods, which receives a plurality of messages, and, prior to each transmit period, which selects from among said plurality of messages to ensure that each storage processing node sends up to one subchunk and receives up to one subchunk during each transmit period, and which sends a plurality of transmit requests corresponding to selected messages; and wherein said transfer process, in response to receiving a transmit request from said management process, sends a corresponding subchunk during the next transmit period initiated by the next broadcasted transmit command.
23. The synchronized data transfer system of claim 22, wherein said management process selects from among said plurality of messages based on timestamp priority.
24. The synchronized data transfer system of claim 23, wherein said management process first selects a message with a highest priority timestamp and then selects each subsequent message if an identified source node has not already been selected for transmitting a subchunk during said following transmit period and if an identified destination node has not already been selected for receiving a subchunk during said following transmit period.
CA2547440A 2003-12-02 2004-12-02 Synchronized data transfer system Expired - Fee Related CA2547440C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US52643703P 2003-12-02 2003-12-02
US60/526,437 2003-12-02
US10/999,661 2004-11-30
US10/999,661 US7788396B2 (en) 2001-11-28 2004-11-30 Synchronized data transfer system
PCT/US2004/040235 WO2005057828A2 (en) 2003-12-02 2004-12-02 Synchronized data transfer system

Publications (2)

Publication Number Publication Date
CA2547440A1 true CA2547440A1 (en) 2005-06-23
CA2547440C CA2547440C (en) 2011-01-11

Family

ID=34681500

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2547440A Expired - Fee Related CA2547440C (en) 2003-12-02 2004-12-02 Synchronized data transfer system

Country Status (7)

Country Link
US (1) US7788396B2 (en)
EP (1) EP1692620B1 (en)
JP (1) JP4426589B2 (en)
CA (1) CA2547440C (en)
DE (1) DE04812687T1 (en)
MX (1) MXPA06006330A (en)
WO (1) WO2005057828A2 (en)

Families Citing this family (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11106424B2 (en) 2003-07-28 2021-08-31 Sonos, Inc. Synchronizing operations among a plurality of independently clocked digital data processing devices
US11650784B2 (en) 2003-07-28 2023-05-16 Sonos, Inc. Adjusting volume levels
US11294618B2 (en) 2003-07-28 2022-04-05 Sonos, Inc. Media player system
US8086752B2 (en) 2006-11-22 2011-12-27 Sonos, Inc. Systems and methods for synchronizing operations among a plurality of independently clocked digital data processing devices that independently source digital data
US10613817B2 (en) 2003-07-28 2020-04-07 Sonos, Inc. Method and apparatus for displaying a list of tracks scheduled for playback by a synchrony group
US8290603B1 (en) 2004-06-05 2012-10-16 Sonos, Inc. User interfaces for controlling and manipulating groupings in a multi-zone media system
US8234395B2 (en) 2003-07-28 2012-07-31 Sonos, Inc. System and method for synchronizing operations among a plurality of independently clocked digital data processing devices
US11106425B2 (en) 2003-07-28 2021-08-31 Sonos, Inc. Synchronizing operations among a plurality of independently clocked digital data processing devices
US9374607B2 (en) 2012-06-26 2016-06-21 Sonos, Inc. Media playback system with guest access
US9977561B2 (en) 2004-04-01 2018-05-22 Sonos, Inc. Systems, methods, apparatus, and articles of manufacture to provide guest access
US8868698B2 (en) 2004-06-05 2014-10-21 Sonos, Inc. Establishing a secure wireless network with minimum human intervention
US8326951B1 (en) 2004-06-05 2012-12-04 Sonos, Inc. Establishing a secure wireless network with minimum human intervention
US7721011B1 (en) * 2005-05-09 2010-05-18 Oracle America, Inc. Method and apparatus for reordering memory accesses to reduce power consumption in computer systems
JP4631569B2 (en) * 2005-07-12 2011-02-16 パナソニック株式会社 Communication system, master device and slave device used therefor, and communication method
EP1858228A1 (en) * 2006-05-16 2007-11-21 THOMSON Licensing Network data storage system with distributed file management
US8483853B1 (en) 2006-09-12 2013-07-09 Sonos, Inc. Controlling and manipulating groupings in a multi-zone media system
US9202509B2 (en) 2006-09-12 2015-12-01 Sonos, Inc. Controlling and grouping in a multi-zone media system
US8788080B1 (en) 2006-09-12 2014-07-22 Sonos, Inc. Multi-channel pairing in a media system
US8943218B2 (en) * 2006-10-12 2015-01-27 Concurrent Computer Corporation Method and apparatus for a fault resilient collaborative media serving array
JP5386035B2 (en) 2009-04-28 2014-01-15 アルカテル−ルーセント Method and apparatus for sending a message
EP2556439A4 (en) * 2010-04-08 2015-03-04 Vasona Networks Managing streaming bandwidth for multiple clients
US9137278B2 (en) 2010-04-08 2015-09-15 Vasona Networks Inc. Managing streaming bandwidth for multiple clients
US9374404B2 (en) 2010-08-26 2016-06-21 Vasona Networks Inc. Streaming media flows management
US9143838B2 (en) 2010-09-06 2015-09-22 Vasona Networks Inc. Device and method for quality assessment of encrypted streaming media flows
US8817614B1 (en) 2010-09-16 2014-08-26 Vasona Networks Inc. Policy enforcer having load balancing capabilities
US8976655B2 (en) 2010-09-16 2015-03-10 Vasona Networks Inc. Evaluating a capacity of a cell of a radio access network
US9872185B1 (en) 2010-09-16 2018-01-16 Vasona Networks Ltd. Policy enforcer in a network that has a network address translator
US9832671B2 (en) 2010-09-16 2017-11-28 Vassona Networks Modeling radio access networks
US8902753B2 (en) 2010-09-16 2014-12-02 Vasona Networks Inc. Method, system and computer readable medium for affecting bit rate
US11429343B2 (en) 2011-01-25 2022-08-30 Sonos, Inc. Stereo playback configuration and control
US11265652B2 (en) 2011-01-25 2022-03-01 Sonos, Inc. Playback device pairing
WO2012157033A1 (en) * 2011-05-17 2012-11-22 パナソニック株式会社 Stream processing device
US8665858B2 (en) 2011-09-15 2014-03-04 Vasona Networks Inc. Method and computer readable medium for gathering user equipment location information
CN103024456B (en) * 2011-09-27 2016-02-24 腾讯科技（深圳）有限公司 A kind of Online Video player method and video playback server
US8849776B2 (en) * 2011-10-17 2014-09-30 Yahoo! Inc. Method and system for resolving data inconsistency
US9729115B2 (en) 2012-04-27 2017-08-08 Sonos, Inc. Intelligently increasing the sound level of player
US9008330B2 (en) 2012-09-28 2015-04-14 Sonos, Inc. Crossover frequency adjustments for audio speakers
US9510055B2 (en) 2013-01-23 2016-11-29 Sonos, Inc. System and method for a media experience social interface
US9996547B2 (en) * 2013-07-25 2018-06-12 Dropbox, Inc. Prioritizing content item synchronization based on sharing
US9654545B2 (en) 2013-09-30 2017-05-16 Sonos, Inc. Group coordinator device selection
US9288596B2 (en) 2013-09-30 2016-03-15 Sonos, Inc. Coordinator device for paired or consolidated players
US20150095679A1 (en) 2013-09-30 2015-04-02 Sonos, Inc. Transitioning A Networked Playback Device Between Operating Modes
US9720576B2 (en) 2013-09-30 2017-08-01 Sonos, Inc. Controlling and displaying zones in a multi-zone system
US9300647B2 (en) 2014-01-15 2016-03-29 Sonos, Inc. Software application and zones
US9401971B2 (en) * 2014-01-31 2016-07-26 International Business Machines Corporation Resource recommendation, reuse and optimization through common context
US20150220498A1 (en) 2014-02-05 2015-08-06 Sonos, Inc. Remote Creation of a Playback Queue for a Future Event
US9226087B2 (en) 2014-02-06 2015-12-29 Sonos, Inc. Audio output balancing during synchronized playback
US9226073B2 (en) 2014-02-06 2015-12-29 Sonos, Inc. Audio output balancing during synchronized playback
US9679054B2 (en) 2014-03-05 2017-06-13 Sonos, Inc. Webpage media playback
US10587693B2 (en) 2014-04-01 2020-03-10 Sonos, Inc. Mirrored queues
US20150324552A1 (en) 2014-05-12 2015-11-12 Sonos, Inc. Share Restriction for Media Items
US20150356084A1 (en) 2014-06-05 2015-12-10 Sonos, Inc. Social Queue
US9874997B2 (en) 2014-08-08 2018-01-23 Sonos, Inc. Social playback queues
US9860286B2 (en) 2014-09-24 2018-01-02 Sonos, Inc. Associating a captured image with a media item
US9690540B2 (en) 2014-09-24 2017-06-27 Sonos, Inc. Social media queue
US10645130B2 (en) 2014-09-24 2020-05-05 Sonos, Inc. Playback updates
US9723038B2 (en) 2014-09-24 2017-08-01 Sonos, Inc. Social media connection recommendations based on playback information
US9667679B2 (en) 2014-09-24 2017-05-30 Sonos, Inc. Indicating an association between a social-media account and a media playback system
US9959087B2 (en) 2014-09-24 2018-05-01 Sonos, Inc. Media item context from social media
EP3114625A1 (en) 2014-09-24 2017-01-11 Sonos, Inc. Social media connection recommendations based on playback information
US10248376B2 (en) 2015-06-11 2019-04-02 Sonos, Inc. Multiple groupings in a playback system
US9886234B2 (en) 2016-01-28 2018-02-06 Sonos, Inc. Systems and methods of distributing audio to one or more playback devices
CN106325768B (en) * 2016-08-19 2019-08-13 华中科技大学 A kind of two-shipper storage system and method
US10712997B2 (en) 2016-10-17 2020-07-14 Sonos, Inc. Room association based on name
US11048519B2 (en) 2019-11-22 2021-06-29 T-Mobile Usa, Inc. System and method for asynchronous distribution of operations that require synchronous execution

Family Cites Families (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55157181A (en) 1979-05-25 1980-12-06 Nec Corp Buffer memory control system
US5421031A (en) * 1989-08-23 1995-05-30 Delta Beta Pty. Ltd. Program transmission optimisation
US5247347A (en) * 1991-09-27 1993-09-21 Bell Atlantic Network Services, Inc. Pstn architecture for video-on-demand services
US5367520A (en) * 1992-11-25 1994-11-22 Bell Communcations Research, Inc. Method and system for routing cells in an ATM switch
JP2666033B2 (en) 1993-02-18 1997-10-22 日本アイ・ビー・エム株式会社 Data supply device
ES2112976T3 (en) * 1993-05-19 1998-04-16 Alsthom Cge Alcatel VIDEO NETWORK ON REQUEST.
DE69319327T2 (en) * 1993-05-19 1998-10-29 Alsthom Cge Alcatel Video server
US5581479A (en) 1993-10-15 1996-12-03 Image Telecommunications Corp. Information service control point, which uses different types of storage devices, which retrieves information as blocks of data, and which uses a trunk processor for transmitting information
US5473362A (en) * 1993-11-30 1995-12-05 Microsoft Corporation Video on demand system comprising stripped data across plural storable devices with time multiplex scheduling
JP3617089B2 (en) 1993-12-27 2005-02-02 株式会社日立製作所 Video storage / delivery device and video storage / delivery system
US5732239A (en) * 1994-05-19 1998-03-24 Starlight Networks Method for operating a disk storage system which stores video data so as to maintain the continuity of a plurality of video streams
US5521631A (en) * 1994-05-25 1996-05-28 Spectravision, Inc. Interactive digital video services system with store and forward capabilities
US5606359A (en) * 1994-06-30 1997-02-25 Hewlett-Packard Company Video on demand system with multiple data sources configured to provide vcr-like services
US5671377A (en) * 1994-07-19 1997-09-23 David Sarnoff Research Center, Inc. System for supplying streams of data to multiple users by distributing a data stream to multiple processors and enabling each user to manipulate supplied data stream
DE69521374T2 (en) 1994-08-24 2001-10-11 Hyundai Electronics America Video server and system using it
US5712976A (en) * 1994-09-08 1998-01-27 International Business Machines Corporation Video data streamer for simultaneously conveying same one or different ones of data blocks stored in storage node to each of plurality of communication nodes
WO1996017306A2 (en) * 1994-11-21 1996-06-06 Oracle Corporation Media server
EP0716370A3 (en) * 1994-12-06 2005-02-16 International Business Machines Corporation A disk access method for delivering multimedia and video information on demand over wide area networks
US5729279A (en) * 1995-01-26 1998-03-17 Spectravision, Inc. Video distribution system
EP0727750B1 (en) * 1995-02-17 2004-05-12 Kabushiki Kaisha Toshiba Continuous data server apparatus and data transfer scheme enabling multiple simultaneous data accesses
US5608448A (en) * 1995-04-10 1997-03-04 Lockheed Martin Corporation Hybrid architecture for video on demand server
US5742892A (en) * 1995-04-18 1998-04-21 Sun Microsystems, Inc. Decoder for a software-implemented end-to-end scalable video delivery system
JP3201219B2 (en) * 1995-05-29 2001-08-20 三菱電機株式会社 I / O processing system
JPH08328760A (en) 1995-06-01 1996-12-13 Hitachi Ltd Disk array device
US5721815A (en) * 1995-06-07 1998-02-24 International Business Machines Corporation Media-on-demand communication system and method employing direct access storage device
JP3088268B2 (en) 1995-06-21 2000-09-18 日本電気株式会社 Video server in video-on-demand system
US5678061A (en) * 1995-07-19 1997-10-14 Lucent Technologies Inc. Method for employing doubly striped mirroring of data and reassigning data streams scheduled to be supplied by failed disk to respective ones of remaining disks
US5790794A (en) * 1995-08-11 1998-08-04 Symbios, Inc. Video storage unit architecture
US6049823A (en) * 1995-10-04 2000-04-11 Hwang; Ivan Chung-Shung Multi server, interactive, video-on-demand television system utilizing a direct-access-on-demand workgroup
US5862312A (en) * 1995-10-24 1999-01-19 Seachange Technology, Inc. Loosely coupled mass storage computer cluster
US5978843A (en) * 1995-12-06 1999-11-02 Industrial Technology Research Institute Scalable architecture for media-on-demand servers
US6128467A (en) 1996-03-21 2000-10-03 Compaq Computer Corporation Crosspoint switched multimedia system
US6032200A (en) * 1996-09-30 2000-02-29 Apple Computer, Inc. Process scheduling for streaming data through scheduling of disk jobs and network jobs and the relationship of the scheduling between these types of jobs
US5974503A (en) * 1997-04-25 1999-10-26 Emc Corporation Storage and access of continuous media files indexed as lists of raid stripe sets associated with file names
US5892915A (en) 1997-04-25 1999-04-06 Emc Corporation System having client sending edit commands to server during transmission of continuous media from one clip in play list for editing the play list
DE69830965T2 (en) * 1997-05-26 2006-05-24 Koninklijke Philips Electronics N.V. SYSTEM FOR PLAYING DATA IN A VIDEO SERVER
US6230200B1 (en) * 1997-09-08 2001-05-08 Emc Corporation Dynamic modeling for resource allocation in a file server
US6134596A (en) * 1997-09-18 2000-10-17 Microsoft Corporation Continuous media file server system and method for scheduling network resources to play multiple files having different data transmission rates
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
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
US6182128B1 (en) 1998-03-05 2001-01-30 Touchmusic Entertainment Llc Real-time music distribution systems
US6101547A (en) * 1998-07-14 2000-08-08 Panasonic Technologies, Inc. Inexpensive, scalable and open-architecture media server
US6370579B1 (en) * 1998-10-21 2002-04-09 Genuity Inc. Method and apparatus for striping packets over parallel communication links
US6289383B1 (en) * 1998-11-30 2001-09-11 Hewlett-Packard Company System and method for managing data retrieval bandwidth
US6401126B1 (en) * 1999-03-10 2002-06-04 Microsoft Corporation File server system and method for scheduling data streams according to a distributed scheduling policy
US6289376B1 (en) 1999-03-31 2001-09-11 Diva Systems Corp. Tightly-coupled disk-to-CPU storage server
US6275898B1 (en) * 1999-05-13 2001-08-14 Lsi Logic Corporation Methods and structure for RAID level migration within a logical unit
JP2001051890A (en) 1999-08-10 2001-02-23 Toshiba Corp Virtual decentralized file server system
US6389420B1 (en) * 1999-09-30 2002-05-14 Emc Corporation File manager providing distributed locking and metadata management for shared data access by clients relinquishing locks after time period expiration
US6604155B1 (en) 1999-11-09 2003-08-05 Sun Microsystems, Inc. Storage architecture employing a transfer node to achieve scalable performance
JP2001166887A (en) 1999-12-08 2001-06-22 Sony Corp Data recording and reproducing device and data recording and reproducing method
US20020073172A1 (en) 1999-12-10 2002-06-13 Diva Systems Corp. Method and apparatus for storing content within a video on demand environment
US6834326B1 (en) * 2000-02-04 2004-12-21 3Com Corporation RAID method and device with network protocol between controller and storage devices
US6571351B1 (en) * 2000-04-07 2003-05-27 Omneon Video Networks Tightly coupled secondary storage system and file system
US6898285B1 (en) 2000-06-02 2005-05-24 General Instrument Corporation System to deliver encrypted access control information to support interoperability between digital information processing/control equipment
US6542962B2 (en) * 2001-03-21 2003-04-01 Hitachi, Ltd. Multiple processor data processing system with mirrored data for distributed access
US20020157113A1 (en) * 2001-04-20 2002-10-24 Fred Allegrezza System and method for retrieving and storing multimedia data
US20030046704A1 (en) 2001-09-05 2003-03-06 Indra Laksono Method and apparatus for pay-per-quality of service for bandwidth consumption in a video system
US6907466B2 (en) 2001-11-08 2005-06-14 Extreme Networks, Inc. Methods and systems for efficiently delivering data to a plurality of destinations in a computer network

Also Published As

Publication number Publication date
EP1692620B1 (en) 2010-11-03
CA2547440C (en) 2011-01-11
WO2005057828A2 (en) 2005-06-23
EP1692620A4 (en) 2009-08-12
WO2005057828A3 (en) 2006-04-06
EP1692620A2 (en) 2006-08-23
JP4426589B2 (en) 2010-03-03
US7788396B2 (en) 2010-08-31
US20050114538A1 (en) 2005-05-26
DE04812687T1 (en) 2007-01-18
MXPA06006330A (en) 2006-08-23
JP2007513582A (en) 2007-05-24

Similar Documents

Publication Publication Date Title
CA2547440A1 (en) Synchronized data transfer system
JP3145242B2 (en) Wireless data communication system with labor saving function
CN100438459C (en) System and method for processing multi-media information bag in medium access control processor
US5940597A (en) Method and apparatus for periodically updating entries in a content addressable memory
JP2002314598A (en) Data distribution method
JPH0810862B2 (en) Data communication method and device
JPH0630514B2 (en) Communication control method for communication ring system
MX2007011277A (en) Power-save control for network master device.
CN100518142C (en) Method for preventing network interruption caused by address aging and time inconformity
US7075895B1 (en) System and method for facilitating discovery of network addresses and selected charateristics of computer systems and the like which are connected in digital data networks
EP2040399B1 (en) An optical burst switching network based burst packet transmitting system and the method thereof
JP2003060645A (en) Wireless packet communication transmitting method and wireless packet communication system
US5109379A (en) Storage star network
EP0661644A2 (en) Message control in a multi-node data processing system
JPH10327190A (en) Network traffic priority determining method
US7529240B2 (en) Transmission device
CN113542150B (en) Data transmission method and device and central end network bridge
CN110061922B (en) Message forwarding method and device
CN111064622B (en) Network device, synchronization apparatus, and information transmission method
US7200155B2 (en) Communication system capable of efficiently transmitting data from terminals to server
JP2001197097A (en) Packet communication system
JPH0292043A (en) Data reception system
CN101557299B (en) Main and standby rearranging method based on object
CN109327440B (en) Data transmission method of data client and multi-data server based on time slices
JPH0799833B2 (en) Data transmission method and device

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20191202