Digital signal recording and reproducing apparatus

Details Digital signal recording and reproducing apparatus Digital signal recording and reproducing apparatus

1986-04-02

1988-09-20

Faber, Alan

Dynamic magnetic information storage or retrieval

Recording for changing duration, frequency or redundant...

360 32, 360 362, 360 48, G11B 2012

Patent

active

047729597

ABSTRACT:
A novel digital signal recording and reproducing apparatus is disclosed in which an audio digital signal is recorded and reproduced alone or together with a video signal in a video tape recorder. If the sampling frequency of the audio signal is not an integral multiple of the vertical synchronous signal of the video signal, the audio signal is divided among fields in accordance with a predetermined regularity, and then the field information for identifying the number of samples of the audio digital signal is added and recorded for each field. At the time of reproduction, the field information is read to identify the number of samples of the audio digital signal, thus picking out only the audio signal excepting the redundant portions. In adding or inserting a signal of tape 2 to tape 1, the reproduced signal of tape 2 is divided and recorded again among the fields on the basis of the field information obtained from the reproduced signal of tape 1 in such a manner as to satisfy the regularity with which the audio signal already recorded in tape 1 divided among the fields.

REFERENCES:
patent: 4138694 (1979-02-01), Doi
patent: 4646171 (1987-02-01), Odaka

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