Vibration-resistant playback device

Details Vibration-resistant playback device Vibration-resistant playback device

1995-12-06

2000-09-05

Tran, Thang V.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

G11O 509

Patent

active

061153370

ABSTRACT:
A control unit is used to set a first reading speed and a second reading speed of the information stored on the information medium as a function of a predetermined occupancy of the buffer below its storage capacity, for the purpose of reducing the number of returns. The drive motor which produces the reading speed is connected via a switch to the driver which drives it and, during the reduction of the reading speed to a predetermined value or until the occupancy of the buffer falls below a predetermined occupancy, the power supply to the drive motor which produces the reading speed, is reduced by means of a switch for the purpose of reducing the power consumption. Subcode information is preferably used to synchronize the data in the buffer after an interruption, and the buffer is preferably arranged between a first assembly for the pulse shaping of the signal read from the information medium and a second assembly for error correction.

REFERENCES:
patent: 4796247 (1989-01-01), Vogelsang
patent: 5199019 (1993-03-01), Matsumura et al.
patent: 5212678 (1993-05-01), Roth et al.
patent: 5224089 (1993-06-01), Matsumura et al.
patent: 5455812 (1995-10-01), Shinada
patent: 5491677 (1996-02-01), Sasaki

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