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. 01, 2000
Filed:
Nov. 06, 1996
Masayuki Omori, Tokyo, JP;
Kiyohiro Oka, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A synchronous control device is disclosed which is capable of obtaining stable synchronization regardless of the kind of image source even when the automatic synchronous control circuit cannot operate in the normal manner. The device includes a phase comparator, an integrator, a horizontal oscillation circuit, and a horizontal synchronous control circuit composed of a frequency measuring section consisting of a digital frequency measuring circuit, etc. and a control section consisting of a frequency determining circuit, an oscillation frequency control circuit, etc. The frequency measuring section measures the input horizontal synchronizing frequency and transfers it to the control section as digital data, and the control section determines the true value of the input synchronizing frequency by the frequency determining circuit while monitoring the transition of the frequency data per unit time. The oscillation frequency control circuit performs control to adapt the oscillation frequency of the horizontal oscillation circuit to the determined true value, whereby a highly accurate synchronous control is possible.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile