Tone arm assembly

Details Tone arm assembly Tone arm assembly

1977-04-22

1979-02-06

Stephan, Steven L.

Undertaking

G11B 310

Patent

active

041381211

ABSTRACT:
A tone arm assembly for record players having a first motor for rotating a tone arm in the vertical direction, a second motor for rotating the tone arm in the horizontal direction with respect to a record disc, respectively, a detector for detecting low frequency vertical and horizontal vibrations of the tone arm during the reproduction of a record disc and feeding back an output signal of the detector to the motors so as to cancel the vibrations, whereby high fidelity reproduction of sounds can be performed. Further, the stylus pressure adjustment and elevation angle adjustment of the tone arm are also performed.

REFERENCES:
patent: 3503615 (1970-03-01), Matsuda
patent: 3572724 (1971-03-01), Rabinow
patent: 3830505 (1974-08-01), Rabinow
patent: 4046386 (1977-09-01), Gosling et al.

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