Audio/video file server including decompression/playback means

• US 5,262,875 A
• Filed: 04/30/1992
• Issued: 11/16/1993
• Est. Priority Date: 04/30/1992
• Status: Expired due to Term

• Current Assignee: Brookford Enterprises LLC
• Original Assignee: Instant Water Technologies LLC
• Inventors: Mincer, Earl I., Siegel, David L.
• Primary Examiner(s): McElheny, Jr., Donald E.
• Application Number:
  US07/876,363
• Time in Patent Office: 565 Days
• Field of Search: 360/15, 360/33.1, 358/335, 358/342, 358/85, 358/86, 358/133, 358/134
• US Class Current: 386/354
• CPC Class Codes: H04N 21/2387 Stream processing in response to a playback request from an end-user, e.g. for trick-play
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 5/9264 using transform coding

Abstract

An audio/video file server includes a storage unit for centrally storing compressed digital audio/video program information, a transceiver for receiving compressed digital audio/video program information from an external source over a less-than-real-time period to update the stored audio/video program information, a plurality of playback units, each associated with an external playback line and an external playback station and each including a decompression unit, for receiving selected compressed digital audio/video program information from the storage unit, for decompressing the selected compressed digital audio/video program information received from the storage unit, and for playing it in real time over the associated playback line to the associated playback station, a network interface unit for receiving playback requests from the playback units, and a processor for controlling the storage and playback units to play the decompressed selected audio/video program information in real time for viewing by users at selected playback stations.

Claims

1. An audio/video file server for decompressing and distributing selected audio/video program information stored in a compressed digital format within the file server to one or more external playback stations for real-time viewing by users at those playback stations, the audio/video file server comprising:

storage means for storing compressed digital audio/video program information;

transceiver means, connected to the storage means, for receiving compressed digital audio/video program information from an external source over a time period that is less than a real time period required to view the audio/video program information to thereby update the compressed digital audio/video program information stored in the storage means;

a plurality of playback units, each associated with an external playback line and an external playback station and each including decompression means, for receiving selected compressed digital audio/video program information stored in the storage means, for decompressing the selected compressed digital audio/video program information received from the storage means, and for playing the decompressed selected audio/video program information in real time over the associated playback line to the associated playback station;

network interface means, connected to the storage means, transceiver means, playback units, and plurality of playback stations, for receiving playback requests from the plurality of playback stations; and

processing means, connected to the storage means, transceiver means, playback units, and network interface means, the processing means being responsive to the network interface means, following receipt of a playback request, for controlling the associated playback unit to play the decompressed selected audio/video program information in real time.

2. An audio/video file server as in claim 1 further comprising bus means interconnecting said transceiver means, storage means, processing means, network interface means, and plurality of playback units.

3. An audio/video file server as in claim 1 wherein said transceiver means comprises a satellite transceiver.

4. An audio/video file serve as in claim 1 wherein said transceiver means comprises a fiber optic transceiver.

5. An audio/video file server as in claim 1 wherein said transceiver means comprises a microwave transceiver.

6. An audio/video file server as in claim 1 wherein said transceiver means comprises a broadcast television transceiver.

7. An audio/video file server as in claim 1 wherein said transceiver means comprises a cable television transceiver.

8. An audio/video file server as in claim 1 wherein said transceiver means comprises a telephone line transceiver.

9. An audio/video file server as in claim 1 wherein said storage means comprises one or more magnetic disks.

10. An audio/video file server as in claim 1 wherein said storage means comprises one or more optical disks.

11. An audio/video file server as in claim 1 wherein said storage means comprises semiconductor memory.

12. An audio/video file server as in claim 1 wherein said storage means comprises magnetic tape.

13. An audio/video file server as in claim 1 wherein said storage means comprises optical tape.

14. An audio/video file server as in claim 1 wherein said network interface means comprises an ethernet interface.

15. An audio/video file server as in claim 1 wherein said network interface means comprises a token ring interface.

16. An audio/video file server as in claim 1 wherein said network interface means comprises a token ring interface.

17. An audio/video file server as in claim 2 wherein said transceiver means comprises a satellite transceiver.

18. An audio/video file server as in claim 2 wherein said transceiver means comprises a fiber optic transceiver.

19. An audio/video file server as in claim 2 wherein said transceiver means comprises a microwave transceiver.

20. An audio/video file server as in claim 2 wherein said transceiver means comprises a broadcast television transceiver.

21. An audio/video file server as in claim 2 wherein said transceiver means comprises a cable television transceiver.

22. An audio/video file server as in claim 2 wherein said transceiver means comprises a telephone line transceiver.

23. An audio/video file server as in claim 2 wherein said storage means comprises one or more magnetic disks.

24. An audio/video file server as in claim 2 wherein said storage means comprises one or more optical disks.

25. An audio/video file server as in claim 2 wherein said storage means comprises semiconductor memory.

26. An audio/video file server as in claim 2 wherein said storage means comprises magnetic tape.

27. An audio/video file server as in claim 2 wherein said storage means comprises optical tape.

28. An audio/video file server as in claim 2 wherein said network interface means comprises an ethernet interface.

29. An audio/video file server as in claim 2 wherein said network interface means comprises an FDDI interface.

30. An audio/video file server as in claim 2 wherein said network interface means comprises a token ring interface.

31. A method for receiving and storing audio/video program information in a compressed digital format in an audio/video file server and for selectively distributing said stored audio/video file server and for selectively distributing said stored audio/video program information to a plurality of remotely located playback stations for real time viewing by users of the playback stations, the method comprising the steps of:

receiving audio/video program information in compressed digital form at the audio/video file server from a remotely located source over a burst time period that is less than a real time period required to view the audio/video program information;

storing, in the audio/video file server, the compressed digital audio/video program information so received;

providing a network interface between the audio/video file server and the plurality of playback stations for receiving one or more playback requests from the plurality of playback stations and for controlling the plurality of playback stations in response thereto;

processing the one or more playback requests received by said network interface;

selectively decompressing, in the audio/video file serve, the stored compressed digital audio/video program information in accordance with the one or more processed playback requests; and

selectively controlling the plurality of playback stations to play, in real time, the selectively decompressed audio/video program information in accordance with the one or more playback requests.