Optical disk record player with fast access time

Details Optical disk record player with fast access time Optical disk record player with fast access time

1985-02-19

1987-02-24

Richardson, Robert L.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 44, 358342, G11B 700

Patent

active

046462805

ABSTRACT:
An optical disk record player including a disk drive motor, a pickup for retrieving information from the surface of the disk, a processing circuit for processing signals provided by the pickup, and a speed control circuit having a clock generator used for the signal processing, wherein when the program access command is entered during the playback mode at an increased or decreased disk speed that is achieved by varying the clock frequency produced by the speed control circuit, the clock frequency is temporarily changed to the normal frequency to cause the normal disk speed in which the program access mode takes place, and thereafter the clock frequency is changed back to the original frequency so that the original disk speed is restored.

REFERENCES:
patent: 4460988 (1984-07-01), Gordon
patent: 4598394 (1986-07-01), Nonaka
Radio Shack LDOS 5.1 Operating System Manual, pp. 1-21, Copyright 1981, 1982.

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