Automatic music selecting device

Details Automatic music selecting device Automatic music selecting device

1981-07-16

1983-02-22

Stephan, Steven L.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 33, 369217, 369225, 369231, G11B 338, G11B 1706

Patent

active

043750923

ABSTRACT:
An automatic music selecting device in which a pickup cartridge is accurately lowered onto a disc at an intermediate position between adjacent songs on the disc even if the disc is eccentric. An intersong sensor mounted on the pickup cartridge detects the intersong intervals upon movement of the arm. The arm is stopped at a predetermined interval designated by an externally supplied song number. To do this, the output signal from the intersong sensor is held corresponding to the position just before the arm is stopped. Then, the position of the arm is finely adjusted on the basis of the difference between the level of the output signal thereafter produced by the sensor and the held level.

REFERENCES:
patent: 3937903 (1976-02-01), Osann
patent: 4142729 (1979-03-01), McLennan
patent: 4166621 (1979-09-01), Isaacson et al.

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