Method of recording digital video and audio data

Details Method of recording digital video and audio data Method of recording digital video and audio data

1993-08-26

1995-02-21

Neyzari, Ali

Dynamic magnetic information storage or retrieval

General processing of a digital signal

In specific code or form

360 48, G11B 509

Patent

active

053921682

ABSTRACT:
A data word of 8 bits is code-transformed into a code word of 12 bits, for an 8/12 code which is suitable for high density recording such as d=2 and k=10, two kinds of synchronous pattern which never appear in data can be respectively provided for the video and audio uses while keeping the limitation with respect to d and k. Accordingly, decision error between the video data and audio data resulting from reproducing error can be significantly decreased, leading to an improvement in error probability and yet it is realizable with an extremely practical circuit structure. In addition, a pilot signal can be generated digitally with an extremely simple circuit, being suitable for home-use digital VCRs or the like which requires a stable pilot signal. As a result, the error rate of a super high density recording apparatus such as, for example, a digital VCR can be significantly decreased, and thus, its practical effects are very large.

REFERENCES:
patent: 3689899 (1972-09-01), Franaszek
patent: 3852687 (1974-12-01), Hodges
patent: 4486739 (1984-12-01), Franaszek et al.
patent: 4598326 (1986-07-01), Leiner
patent: 4677421 (1987-06-01), Taniyama
patent: 4688016 (1987-08-01), Fok
patent: 4719523 (1988-01-01), Kutaragi
patent: 5245483 (1993-09-01), Van Gestel

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