System and method for transporting multiple low-bit-rate...

Details System and method for transporting multiple low-bit-rate... System and method for transporting multiple low-bit-rate...

2006-02-28

2006-02-28

Pham, Chi (Department: 2666)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C370S540000, C370S535000

Reexamination Certificate

active

07006536

ABSTRACT:
Systems and methods for conveying multiple low-bit-rate data streams over a data transport medium which is configured to transport data in a single, high-bit-rate data stream. In one embodiment, a plurality of low-bit-rate signals are received and a corresponding data rate is determined. Each of the signals is formatted in frames comprising a payload and overhead data. The high-bit-rate signal is also formatted in frames comprising a payload and overhead data, but the frames (including payload and overhead) contain more bits than those of the low-bit-rate frames. The payloads of the low-bit-rate frames are mapped into the payloads of the high-bit-rate frames. The overhead and timing data of the low-bit-rate frames are mapped into the unused portion of the overhead of the high-bit-rate frames. After the high-bit-rate signal is transported, the payload, overhead and timing data of each of the low-bit-rate signals is extracted, and the corresponding signals are reproduced.

REFERENCES:
patent: 5062105 (1991-10-01), McKnight et al.
patent: 6457080 (2002-09-01), Sherman et al.
patent: 6616350 (2003-09-01), de Boer et al.
patent: 6822975 (2004-11-01), Antosik et al.

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