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:
Apr. 27, 1993
Filed:
Dec. 04, 1991
Applicant:
Inventors:
Tetsuya Suzuki, Kanagawa, JP;
Hideo Hatada, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307525 ; 328109 ; 328138 ; 328134 ; 377 47 ;
Abstract
A frequency discriminating circuit suitable for use with a display capable of displaying image data of a plurality of signal formats and which has an oscillator for generating an oscillation frequency corresponding to a horizontal synchronizing frequency of an input signal which can be displayed. This frequency discriminating circuit includes a counter for frequency-dividing the oscillation frequency of the oscillator which is reset by a horizontal synchronizing signal, to thereby discriminate the horizontal synchronizing frequency of the input signal.