Disc record players

Details Disc record players Disc record players

1978-05-30

1980-07-15

Stephan, Steven L.

Undertaking

G11B 338

Patent

active

042124697

ABSTRACT:
A disc record player comprising a pickup arm, electrical position-responsive means for providing an electrical signal that is dependent upon the position of the pickup arm, electrical reference means for affording one or more reference signals corresponding to one or more required positions of the pickup arm, comparator means for comparing the electrical signal from the electrical position-responsive means with a selected reference signal from the electrical reference means and for generating a command signal which is effective to cause the pickup arm to move to a position corresponding to the said required position.

REFERENCES:
patent: 2235301 (1941-03-01), Robinson
patent: 3212074 (1965-10-01), Daniels et al.
patent: 3993315 (1976-11-01), Hansen
patent: 4135086 (1979-01-01), Baba

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