PCM data transmitting apparatus and method

Details PCM data transmitting apparatus and method PCM data transmitting apparatus and method

1989-06-15

1990-11-20

Smith, Jerry

Excavating

371 371, 371 377, 371 401, 371 41, G06F 1110

Patent

active

049724177

ABSTRACT:
A data transmission and reception apparatus and method capable of selecting either of two modes having the same sampling frequency in which the bit number of one data unit are either m or n (which are integral numbers and m>n), while using the same error correction encoder and decoder for the two modes, by inserting m-n bits of dummy data bits into the n-bit data so as to handle it as m-bit data during the processes of error correction encoding and decoding and eliminating from the error correction encoded data the dummy data and a redundant code of the error correction code formed by the dummy data so that the data transmission rate can be lowered.

REFERENCES:
patent: 4320511 (1982-03-01), Koga
patent: 4500926 (1985-02-01), Yoshimaru
patent: 4542419 (1985-09-01), Morio et al.
patent: 4688225 (1987-08-01), Fukami et al.
patent: 4758907 (1988-07-01), Okamoto et al.

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