Digital signal processor for converting between 4-channel PCM si

Details Digital signal processor for converting between 4-channel PCM si Digital signal processor for converting between 4-channel PCM si

1992-07-10

1994-02-08

Hajec, Donald

Dynamic magnetic information storage or retrieval

Converting an analog signal to digital form for recording;...

360 64, G11B 509, G11B 1514

Patent

active

052853268

ABSTRACT:
A digital audio tape recorder signal processor whose signal processing period is Td performs signal processing for recording 2-channel PCM signals having a sampling frequency of Fs. A circuit is provided for compressing the time-base of 4-channel PCM signals by one-half to form 2-channel time-base-compressed PCM signals in which the first and second channels are time-divided and multiplexed and the third and fourth channels are time-divided and multiplexed, so that when the time-base-compressed PCM signal is supplied to the signal processor, the signal processor is operated with a sampling frequency of 2Fs and the signal processing period is changed to 1/2 Td.

REFERENCES:
patent: 4628373 (1986-12-01), Takahashi et al.
patent: 4719521 (1988-01-01), Juso
patent: 4758907 (1988-07-01), Okamoto et al.
patent: 4768108 (1988-08-01), Higurashi
patent: 4862292 (1989-08-01), Enari et al.
patent: 5157557 (1992-10-01), Oohashi et al.

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