Disk player with constant angular velocity

Details Disk player with constant angular velocity Disk player with constant angular velocity

1993-10-04

1995-05-09

Young, W. R.

Dynamic information storage or retrieval

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

Mechanism control by the control signal

369124, G11B 700

Patent

active

054146852

ABSTRACT:
An object of the invention is to provide a disk player, which is capable of accessing to a disk in a short time, having higher durability and lower electric power consumption. The disk player comprising: a motor for rotating a disk; an optical pick-up for reading recorded data, which include synchronizing signals and output-data elements, and outputting as first signals; a first clock section for extracting the synchronizing signals and generating first clock signals, whose frequency is equal to that of the synchronizing signals; a second clock section for generating second clock signals and coinciding the frequency and the phase of the second clock signals with that of the first clock signals; a data extracting section for extracting the output-data elements on the basis of the second clock signals and outputting as second signals; and a processing section for rotating the motor at fixed rotational speed.

REFERENCES:
patent: 4959825 (1990-09-01), Okano
patent: 5253243 (1993-10-01), Suzuki

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