Disc playing apparatus capable of both long time reproduction an

Details Disc playing apparatus capable of both long time reproduction an Disc playing apparatus capable of both long time reproduction an

1992-07-22

1993-09-07

Young, W. R.

Dynamic information storage or retrieval

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

Mechanism control by the control signal

369 50, 369 53, 369 54, 369124, G11B 700

Patent

active

052435873

ABSTRACT:
A disc playing apparatus which can access to a desired track at a high speed without losing an advantage of a large recording capacity of a non-CAV disc. A disc 1 on which a predetermined information signal is recorded is rotated at a constant rotational speed, the information signal is read out to thereby obtain a read signal, a reproduction clock signal CLK.sub.1 is extracted from the read signal, and the read signal is demodulated to thereby obtain demodulation data. A clock signal CLK.sub.2 of a predetermined frequency is generated, the demodulation data is stored in response to the reproduction clock signal CLK.sub.1, the stored demodulation data is sequentially read out in accordance with the storing order in response to the clock signal CLK.sub.2, and when it is detected that a residual data amount exceeds a predetermined amount, a read stop signal is generated, thereby stopping the reading operation of the information signal in response to the read stop signal.

REFERENCES:
patent: 4507767 (1985-03-01), Takasugi
patent: 4554652 (1985-11-01), Maeda et al.
patent: 4669072 (1987-05-01), Miura et al.

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