System and a method for controlling audio/video presentation on a sink device

• US 20050259751A1
• Filed: 05/21/2004
• Published: 11/24/2005
• Est. Priority Date: 05/21/2004
• Status: Abandoned Application

• Current Assignee: General Instrument Corporation (CommScope Holding Company, Inc.)
• Original Assignee: General Instrument Corporation (CommScope Holding Company, Inc.)
• Inventors: Stone, Christopher J., Del Sordo, Christopher S., Ziegler, Terry L., Allinson, Stephen A., Howard, Brad T.
• Application Number:
  US10/850,902
• Publication Number:
  US 20050259751A1
• Time in Patent Office: Days
• US Class Current: 375/240.260
• CPC Class Codes: G09G 2340/02 Handling of images in compressed format, e.g. JPEG, MPEG
• CPC Class Codes: G09G 5/003 Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto specific for a CRT G09G1/165; for a flat panel G09G3/2092
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/43632 involving a wired protocol, e.g. IEEE 1394 high-speed IEEE 1394 serial bus H04L12/40052
• CPC Class Codes: H04N 21/4396 by muting the audio signal

Abstract

A method for encoding an audio/video (AV) program for muting on a sink device includes generating or recovering at least one digital transport stream having the AV program, augmenting the at least one digital transport stream with control information, the control information being configured to invoke a muting of at least one component of the AV program by the sink device, and transmitting the augmented digital transport stream over a digital link coupled to the sink device.

Claims

1. A method of encoding an audio/video (AV) program for muting on a sink device comprising:

generating or recovering at least one digital transport stream having said AV program;

augmenting said at least one digital transport stream with control information, said control information being configured to invoke a muting of at least one component of said AV program by the sink device; and

transmitting said augmented digital transport stream over a digital link coupled to said sink device.

2. The method of claim 1, wherein said at least one digital transport stream comprises a single digital transport stream having a control packet associated with said AV program.

3. The method of claim 2, wherein said digital transport stream includes a program stream;

and

wherein said control packet comprises a program control packet associated with said program stream.

4. The method of claim 3, wherein said digital transport stream further comprises a Motion Pictures Expert Group (MPEG) transport stream;

and

wherein said program stream includes a program map table, said control information being disposed in said program map table.

5. The method of claim 1, wherein said command comprises an audio/visual control command;

said audio/visual control command including an opcode, said opcode being configured to invoke said muting of at least one component of said AV program by the sink device.

6. The method of claim 5, wherein said audio/visual control command comprises an IEEE 1212 control and status register standard compliant command.

7. The method of claim 1, wherein said digital link comprises an IEEE 1394 link.

8. A method of decoding at least one digital transport stream encoded for muting a program component on a sink device comprising:

receiving said at least one digital transport stream over a digital link coupled to a source device;

extracting control information from said at least one digital transport stream;

identifying said program component in response to said control information; and

muting said at least one program component using extant capabilities of said sink device in response to said control information.

9. The method of claim 8, wherein said control information comprises a control packet associated with said digital transport stream.

10. The method of claim 9, wherein said digital transport stream further comprises a program stream;

and

wherein said control packet comprises a program control packet associated with said program stream.

11. The method of claim 10, wherein said program stream includes a program map table, said control information being disposed in said program map table.

12. The method of claim 8, wherein said control information comprises an audio/visual control command.

13. The method of claim 12, wherein said audio/visual control command includes an opcode, said opcode being configured to invoke said muting of at least one component of said AV program by the sink device.

14. The method of claim 8, wherein said muting said at least one program component using extant capabilities of said sink device in response to said control information comprises muting one of the audio, video, or data component of a program stream.

15. The method of claim 14, further comprising displaying a status indication on said sink device using extant display capabilities of said sink device.

16. An encoder for encoding an audio/video (AV) program to be selectively muted on a display device comprising:

a multiplexer unit configured to generate at least one digital transport stream from said AV program; and

a control information unit configured to augment said at least one digital transport stream with control information, said control information operative to invoke a selective muting of one or more components of said AV program on the display device using extant muting capabilities of the display device.

17. The encoder of claim 16, further comprising interface circuitry;

said interface circuitry being configured to transmit said at least one augmented digital transport stream over a digital link communicatively coupling said encoder and said display device.

18. The encoder of claim 17, wherein said digital link comprises an IEEE 1394 bus.

19. A decoder for decoding at least one augmented digital transport stream having at least one audio/visual (AV) program and control information being configured to invoke a muting of at least one component of said AV program by a display device comprising:

a control information analyzer configured to extract said control information from said digital transport stream; and

a demultiplexing unit configured to recover said AV program within said digital transport stream.

20. The decoder of claim 19, further comprising interface circuitry;

said interface circuitry being configured to receive said augmented digital transport stream over a digital link communicatively coupling said decoder to a source device.

21. The decoder of claim 20, wherein said digital link comprises an IEEE 1394 bus.

22. A processor readable medium having instructions thereon for encoding an audio/video (AV) program for muting on a sink device, said instructions being configured to instruct an encoder to perform the method of:

generating or recovering at least one digital transport stream having said AV program;

augmenting said at least one digital transport stream with control information, said control information being configured to invoke a muting of at least one component of said AV program by the sink device; and

transmitting said augmented digital transport stream over a digital link coupled to said sink device.

23. The processor readable medium of claim 22, wherein said processor readable medium is disposed on a source device.

24. The processor readable medium of claim 23, wherein said source device comprises one of a set-top box (STB), a video cassette recorder (VCR), or a receiver.

25. A processor readable medium having instructions thereon for decoding at least one digital transport stream encoded for muting a program component on a sink device, said instructions being configured to instruct an encoder to perform the method of:

receiving said at least one digital transport stream over a digital link coupled to a source device;

extracting control information from said at least one digital transport stream;

identifying said program component in response to said control information; and

muting said at least one program component using extant capabilities of said sink device in response to said control information.

26. The processor readable medium of claim 25, wherein said processor readable medium is disposed on a sink device.

27. The processor readable medium of claim 26, wherein said sink device comprises one of a projector, a high-definition television, or a digital video home system (VHS).