The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 1976
Filed:
Apr. 02, 1975
Applicant:
Inventors:
Manfred Boruschewitz, Berlin, DT;
Klaus Kulle, Berlin, DT;
Assignee:
Robert Bosch G.m.b.H., Stuttgart, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
178 / ; 1791 / ; 358-4 ; 360 19 ;
Abstract
The picture signal and one of the other two signals (sound, color) frequency modulate a carrier and a subcarrier respectively which in turn modulate the incidence of a light beam cutting a transparent track through a metal film covering a transparent record medium moved past the light source. The frequency modulated carriers produce back and forth movement of the light beam aligned with the direction of transport of the record medium past the light source. The third signal modulates the duty cycle of one of the carriers.