Disc player and stylus therefor

Details Disc player and stylus therefor Disc player and stylus therefor

1975-06-30

1977-06-21

Cardillo, Jr., Raymond F.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

1791001B, 1791004R, 17910041G, 274 38, H04N 576

Patent

active

040315460

ABSTRACT:
A pickup stylus adapted to track in a disc record groove has a support element with a tip shaped to have a pair of sides, a rear face, and a bottom with edges defining a right triangle of small dimension. The rear face and the sides terminate at the base, altitude and hypotenuse edges of the bottom respectively. Also the tip has a knife edge formed at an intersection of the sides which extends upward from the apex of the triangular shaped bottom remote from the base edge at an angle obtuse to the bottom. When used in a disc record player system, the stylus tip is aligned such that the base edge of the bottom lies transverse to the groove, the hypotenuse edge spans diagonally substantially the entire width of a groove, while the altitude edge faces the center of rotation of the turntable. The direction of rotation of the turntable beneath the point of stylus reception in the groove extends from the apex of the triangular shaped bottom toward the base edge.

REFERENCES:
patent: 3930117 (1975-12-01), Clemens et al.

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