Narrowed-electrode pickup stylus for video disc systems

Details Narrowed-electrode pickup stylus for video disc systems Narrowed-electrode pickup stylus for video disc systems

1977-03-28

1978-11-07

Wolff, John H.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

274 38, G11B 344

Patent

active

041248678

ABSTRACT:
A novel pickup stylus adapted for playing back prerecorded signals from a video disc has an arrowhead-shape cross-section in the region of its tip. The pickup stylus includes a dielectric support element which has a prow defining the apex of the arrowhead-shape cross-section and a substantially flat rear surface remote from the prow defining the base of the arrowhead-shape cross-section. The entire rear surface is covered with conductive material to form a narrowed-electrode in the region of its tip.

REFERENCES:
patent: 1817094 (1931-08-01), Moore
patent: 2017696 (1935-10-01), Hesse
patent: 3184242 (1965-05-01), Marcucci et al.
patent: 3292936 (1966-12-01), Grado
patent: 3654401 (1972-04-01), Dickopp et al.
patent: 3842194 (1974-10-01), Clemens
patent: 4013830 (1977-03-01), Pinch et al.
patent: 4031546 (1977-06-01), Leedom

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