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. 18, 1987
Filed:
Jun. 18, 1986
Applicant:
Inventor:
Heinz Hess, Weiterstadt, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 30 ; 358 27 ;
Abstract
To control the amplitude of color difference signals (R-Y, B-Y), a circuit is formed by two transistors each receiving matrixed color difference signals at their emitters, the base electrodes of one of the transistors (14, 16) being connected to a source of reference voltage and the base electrodes of the other of the transistors (13, 15) being connected to a common controlled source of voltage (U.sub.G, 18) The color difference signals are then available at the collectors of the second transistors (13, 15) under controlled conditions.