Apparatus for reproducing recorded data and selectively either o

Details Apparatus for reproducing recorded data and selectively either o Apparatus for reproducing recorded data and selectively either o

1994-02-03

1995-11-21

Epps, Georgia Y.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 50, G11B 509

Patent

active

054694167

ABSTRACT:
In an optical recording medium on which the main information is recorded on a pre-formed recording track along the track direction and in which the recorded data are read out by opticaL means, frame sync signals based on the same format as the format for the main information are pre-recorded by offsetting the recording track itself along its width for each frame as an information recording unit, for facilitating frame synchronization and simplifying the construction through the use of a sole common synchronizing circuit. The information pre-recorded by offsetting the track itself along its width includes not only the frame sync signals but also any reproduce-only information for increasing the disc recording capacity. The reproducing circuit for reproducing the frame sync signals of the main information recorded along the track direction of the recording track, and the reproducing circuit for reproducing the frame sync signals having the same format as the main information among the information recorded by offsetting the track along its width, are formed as a common circuit for simplifying the circuit construction.

REFERENCES:
patent: 4375088 (1983-02-01), De Haan et al.
patent: 4464714 (1984-08-01), Huijser et al.
patent: 4967403 (1990-10-01), Ogawa et al.
patent: 5060208 (1991-10-01), Nagai et al.
patent: 5077721 (1991-12-01), Sako et al.
patent: 5185732 (1993-02-01), Ogawa et al.

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