Disc recording medium and apparatus for playback thereof

Details Disc recording medium and apparatus for playback thereof Disc recording medium and apparatus for playback thereof

1988-10-27

1990-01-09

McElheny, Jr., Donald

Facsimile and static presentation processing

Facsimile

Recording apparatus

358342, 369 32, 369 49, H04N 592, G11B 2012, G11B 2710

Patent

active

048931934

ABSTRACT:
Disk-shaped recording medium on which are recorded a first data signal, such as digital audio data, a second data signal in the direction of reproduction and of the disk, such as digital video data and computer program data, and identification data recorded in the read-in track for representing the fact that the second data signal has been recorded. It is possible for this recording medium to be reproduced by a reproducing apparatus which is exclusively used for a conventional disk-shaped recording medium on which the first data signal alone has been recorded. Also disclosed is an apparatus for reproducing the above-described disk-shaped recording medium. The apparatus includes: a circuit for processing the reproduction of the first data signal: a circuit for processing the reproduction of the second data signal: and a control circuit which is supplied with reproduction control data for discriminating between a conventional disk-shaped recording medium on which the first data signal alone has been recorded and a disk-shaped recording medium on which both the first and second data signals have been recorded. By the output of the control circuit, the control of the reproducing operation of a pickup is changed over, and the circuits for processing the reproduction of the first and second data signals are also changed over from one to the other.

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patent: 4495533 (1985-01-01), Chambers
patent: 4496997 (1985-01-01), Ohtsuki
patent: 4587643 (1986-05-01), Monen et al.

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