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:
Nov. 16, 1993
Filed:
Apr. 16, 1992
Applicant:
Inventors:
Kanjuu Ishii, Yokohama, JP;
Shigenori Onaka, Yokosuka, JP;
Assignee:
Victor Company of Japan, Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ; H04N / ;
U.S. Cl.
CPC ...
358142 ; 358108 ; 358181 ; 34082524 ;
Abstract
A video signal transmitter/receiver apparatus and method is provided for automatically switching the aspect ratio at a receiving device. A video transmitter outputs a chrominance signal and a luminance signal separately, and converts the chrominance signal into a low impedance. A transistor and resistive divider network superpose a DC voltage controlled by an aspect ratio control signal on an output signal. A receiving unit inputs the chrominance signal and the luminance signal separately and comprises a discrimination circuit that detects the DC control voltage superposed on the chrominance signal.