Record disc playing apparatus with automatic cancellation of ins

Details Record disc playing apparatus with automatic cancellation of ins Record disc playing apparatus with automatic cancellation of ins

1980-07-02

1982-07-27

Phillips, Charles E.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

369 33, G11B 1706

Patent

active

043421105

ABSTRACT:
A record disc playing apparatus comprises a horizontal drive motor for imparting a horizontal rotational force to a tone arm an address signal generating device for generating an address signal corresponding to a horizontal rotational angle position of the tone arm and a control device including a memory device for storing the magnitude of an inside force to be produced on the tone arm in correspondence with the horizontal rotational angle position of the tone arm. The address signal generating device supplies the generated address signal to the control device. The control device reads out the magnitude of the inside force from the memory device corresponding to the supplied address signal, produces a signal for cancelling the inside force at the rotational angle position of the tone arm corresponding to the read out magnitude of the inside force and supplies the same to the horizontal drive motor.

REFERENCES:
patent: 3503615 (1970-03-01), Matsuda
patent: 4114893 (1978-09-01), Leach et al.
patent: 4184688 (1980-01-01), Omura et al.
patent: 4234836 (1980-11-01), Gaus et al.

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