Optical information control device and synchronizing method ther

Details Optical information control device and synchronizing method ther Optical information control device and synchronizing method ther

1996-02-02

1997-01-07

Epps, Georgia Y.

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

369 48, 369 50, 369 58, 369 32, G11B 700

Patent

active

055924581

ABSTRACT:
An optical information control device and synchronizing method therefor include a mark detection circuit for detecting marks recorded at even intervals in a track on an optical disk and outputting a mark detection signal indicating a detected mark; a frequency dividing circuit for generating a reference clock by frequency-dividing a pit clock and stopping an operation thereof when having received the mark detection signal; and a resumption circuit for resuming the frequency dividing circuit after a preset time from reception of the mark detection signal. Moreover, the reference clock may be synchronized to a byte boundary of data recorded on the optical disk by stopping generation of the reference clock for a preset time.

REFERENCES:
patent: 5172357 (1992-12-01), Taguchi
patent: 5278814 (1994-01-01), Deguchi et al.
patent: 5459710 (1995-10-01), Hoshino et al.
patent: 5477512 (1995-12-01), Kubo et al.

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