Claims
- 1. A multimedia multiplexing/demultiplexing method in a multimedia digital system, comprising:(a) encoding multimedia data; (b) multiplexing the multimedia data encoded in step (a) into predetermined units each having a synchronization code; (c) adding at least one bit to the synchronization code of every-unit multiplexed in step (b).
- 2. The method of claim 1, wherein the multimedia digital system is an H.324M system.
- 3. The method of claim 1, wherein the multiplexing of step (b) uses the H.223 recommendation.
- 4. The method of claim 1, wherein the synchronization code of step (c) comprises a pseudo-random (PN) code.
- 5. The method of claim 1, wherein the synchronization code comprises an HDLC flag.
- 6. The method of claim 5, wherein step (c) comprises adding a pseudo random code to the HDLC flag, said pseudo random code having a high auto correlation.
- 7. The method of claim 6, wherein the multimedia digital system comprises H.324M.
- 8. The method of claim 7, wherein the multiplexing step uses the H.223 recommendation.
- 9. The method of claim 1, wherein step (c) comprises adding a pseudo random noise code to the synchronization code, said pseudo random noise code having a high auto correlation.
- 10. The method of claim 6, wherein said predetermined units include a header section, said method further comprising adding at least one bit as part of the header section.
- 11. A multimedia multiplexing/demultiplexing method in a multimedia digital system, comprising:(a) encoding multimedia data; (b) multiplexing the multimedia data encoded in step (a) into predetermined units each having a synchronization code according to a known ITU-T communications standard protocol; (c) adding at least one bit to the synchronization code of every unit multiplexed in step (b).
- 12. The method of claim 11, wherein step (c) comprises adding a pseudo random noise code to the synchronization code, said pseudo random noise code having a high auto correlation.
- 13. The method of claim 12, wherein said predetermined units include a header section according to the known ITU-T communications standard protocol, said method further comprising adding at least one bit as part of the header section.
- 14. The method of claim 1 wherein the at least one bit is added directly to the synchronization code.
- 15. The method of claim 11 wherein that at least one bit is added directly to the synchronization code.
Parent Case Info
This is a Divisional of application Ser. No. 09/393,362 filed Sep. 10, 1999, which is a Continuation-In-Part of Application Ser. No. 08/938,018 filed Sep. 22, 1997, now U.S. Pat. No. 6,034,968 the disclosure of which is incorporated herein by reference.
US Referenced Citations (13)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
08/938018 |
Sep 1997 |
US |
Child |
09/393362 |
|
US |