Optical disk system

Details Optical disk system Optical disk system

1993-12-13

1995-03-21

Psitos, Aristotelis

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

358342, 358343, 358310, G11B 700

Patent

active

054003156

ABSTRACT:
An analog-to-digital converter executes analog-to-digital conversion of a first analog video signal at a predetermined sampling frequency "fs". A time base converter converts a time base of an output signal from the analog-to-digital converter at a predetermined time base conversion frequency "ftci". A digital output signal from the time base converter is converted into a corresponding second analog video signal in response to a clock signal of a frequency corresponding to the frequency "ftci". The second analog video signal is converted into an FM video signal recorded on a video region of an optical disk. A binary audio digital signal is converted into a multi-level form digital audio signal. The binary audio digital signal has a data rate corresponding to the frequency "ftci". The multi-level form digital audio signal has a data rate "ftci
" and 2.sup.n discrete amplitude levels where "n" denotes a predetermined integer. The multi-level form digital audio signal is converted into a corresponding analog audio signal in response to the clock signal of the frequency corresponding to the frequency "ftci". The analog audio signal is converted into an FM audio signal recorded on an audio region of the optical disk. A data signal generator generates a digital data signal at a data rate "ftci/m" where "m" denotes a predetermined integer. The digital data signal is converted into a corresponding analog data signal in response to the clock signal of the frequency corresponding to the frequency "ftci". The analog data signal is converted into an FM data signal recorded on a data region of the optical disk.

REFERENCES:
patent: 4677497 (1987-06-01), Yoshinaka
patent: 4918523 (1990-04-01), Simon et al.
patent: 5027222 (1991-06-01), Shinbo
patent: 5063447 (1991-11-01), Takeda
patent: 5083212 (1992-01-01), Owa et al.
IEEE Transactions of Consumer Electronics, vol. CE-34, No. 1, Feb. 1988, New York, US, pp. 72-76, Hioki et al `Hi-Vision Optical Disc Player`.
Derwent Publications Ltd., London, GB; AN 84-169914.
European Search Report, 3131193.
"Optical Disc System for Wideband High Definition Video Signal" by K. Tachibana et al; IEEE Transactions on Consumer Electronics, vol. 35, No. 3, Aug. 1989.

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