Pickup arm driving control system with repeat playback function

Details Pickup arm driving control system with repeat playback function Pickup arm driving control system with repeat playback function

1982-12-16

1985-08-13

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Having power driven transducer assembly

369 41, 369216, 369219, 369221, G11B 336, G11B 1914, G11B 1706

Patent

active

045354375

ABSTRACT:
A pickup arm driving control system in record disc players with repeat playback function. The driving control system can drive the manipulation of a tone arm in such a manner that only an optionally selected portion is repeatedly reproduced. The system includes an encoder for producing an output pulse at every predetermined step of the moving of the tone arm, a circuit for calculating the moving distance of the tone arm from an arm rest position by accumulating the output pulses, an operation switch for generating setting signals in response to manual operations conducted when the tone arm is just tracking the starting and end positions of a repeat playback part of the loaded record disc, a memory for storing the up-dated one of the calculated result of moving distance as a first memory value, the first memory values upon the generation of the setting signals as a second and third memory values, and a circuit for in response to the coincidences between the first memory value and the second or third memory value controlling the manipulation of the tone arm.

REFERENCES:
patent: 4222574 (1980-09-01), Cheeseboro
patent: 4260162 (1981-04-01), Morii et al.
patent: 4301526 (1981-11-01), Morii et al.
patent: 4307418 (1981-12-01), Mindel et al.
patent: 4323997 (1982-04-01), Kuribayashi et al.
patent: 4423503 (1983-12-01), Cheeseboro
patent: 4426692 (1984-01-01), Hirata

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