System for recording and reproducing digital audio signal

Details System for recording and reproducing digital audio signal System for recording and reproducing digital audio signal

1989-03-21

1991-08-27

Richardson, Robert L.

Dynamic magnetic information storage or retrieval

Record editing

360 39, 358341, 371 351, H04N 578

Patent

active

050438301

ABSTRACT:
A system is provided for reproducing digital audio data from a recording medium on which segments of digital audio data are recorded with video data, with three segments of the digital audio data corresponding to one field of the video data, each segment including plural samples of the digital audio data, the number of the samples in four out of every five fields being different from that of remaining one of such five fields, and each segment further including identification data indicating field numbers to which each segment belongs. The system detects the identification data in each segment of the digital audio data and whether or not an error appears in the identification data, whereupon, numbering data 1 through 15 (=3.times.5) are derived from the identification data for indicating the phase of each segment in a set corresponding to the periods of the 5 fields. The numbering data derived from the identification data is loaded into a counter when no error is detected in the identification data and, when an error is detected in the identification data, the counter counts a clock signal having a period corresponding to one segment. The digital audio data is reconstructed according to the output of the counter.

REFERENCES:
patent: 4329708 (1982-05-01), Yamamoto
patent: 4772960 (1988-09-01), Takohoshi et al.
patent: 4796243 (1989-01-01), Kato
patent: 4849833 (1989-07-01), Yoshimura
patent: 4914527 (1990-04-01), Asai et al.

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