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:
Dec. 18, 1990
Filed:
Dec. 20, 1988
Kazutoshi Shimizume, Kanagawa, JP;
Hirokazu Kuroda, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A circuit for detecting a synchronizing signal comprises a gate circuit to which a reproduced synchronizing signal and a window signal are supplied. A first counter synchronized with an output signal from the gate circuit counts a clock signal formed from the reproduced signal and generates an insertion synchronizing signal. A second counter synchronized with the output signal from the gate circuit counts a fixed clock signal and generates the window signal. The output signal from the gate circuit or the insertion synchronizing signal is made a synchronizing detection signal. The frame synchronizing signal can thus be detected stably and reliably.