Pulse or digital communications – Repeaters – Testing
Patent
1995-09-08
1998-04-07
Chin, Stephen
Pulse or digital communications
Repeaters
Testing
375254, 375285, 375296, 375206, 371 33, H04B 1500, H04L 118, H04L 2506, H04L 2508
Patent
active
057373574
ABSTRACT:
An apparatus is disclosed which is adaptable for indicating communication failures and eliminating an undesired pattern of physical values of a generated signal, the signal having physical values responsive to a sequence of information. The apparatus includes a protocol sequencer, responsive to the sequence of information and to the communication failure indications, and providing RESET and RETRY control signals; a framing flag generator, responsive to the RESET signal and providing a variable length framing flag, the length of the framing flag being dependent on the RETRY signal; a multiplex switch, responsive to the RETRY and RESET signals for generating a concatenation of the framing flag and sequence of information; a whitener generator, responsive to the RESET signal, for providing a known sequence of values; and a multiplier, for multiplying said concatenation of said framing flag and the sequence of information with the known sequence of whitener values.
REFERENCES:
patent: 3475723 (1969-10-01), Burton et al.
patent: 5335247 (1994-08-01), Olmstead
Chin Stephen
Gluck Jeffrey W.
Motorola Inc.
Wood J. Ray
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