Digital transmission channel framing

Details Digital transmission channel framing Digital transmission channel framing

1988-05-09

1990-02-27

Griffin, Robert L.

Multiplex communications

Wide area network

Packet switching

370 951, H04J 322

Patent

active

049052284

ABSTRACT:
A plurality of digital signals of one or more digital transmission bit rates are arranged to be combined by employing a unique common channel frame format. The channel frame format includes a plurality of data bit positions and a plurality of overhead bit positions. The number of data bit positions used is dependent on the particular incoming signal. Similarly, the number of frames generated during a specific common framing interval is dependent on the digital transmission bit rate of the particular signal. Specifically, the number of channel frames generated during the common channel frame interval is dependent on a number of equivalent so-called lowest transmission bit rate signals included in the particular signal being formatted. The overhead bits are distributed in the channel frame format.

REFERENCES:
patent: 3790715 (1974-02-01), Inose et al.
patent: 3982077 (1976-09-01), Clark et al.
patent: 4122309 (1978-10-01), Jacobson
patent: 4460993 (1984-07-01), Hampton et al.
patent: 4488293 (1984-12-01), Haussmann et al.
Patent Abstracts of Japan vol. 10, No. 367 (E-462) (2424) 12-6-86.
B. Bowles et al., EPROM Achieves Nonuniform Data-Channel Sampling, Electronics, Feb. 16, 1978, pp. 110-113.

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