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. 03, 1992
Filed:
Jul. 19, 1990
Gerhard Pletz-Kirsch, Hamburg, DE;
Jurgen Lenth, Hamburg, DE;
U.S. Philips Corporation, New York, NY (US);
Abstract
A synchronizing arrangement for a picture display device includes a synchronizing signal separating stage in which horizontal synchronizing pulses are recovered from a television signal applied to the synchronizing arrangement. In addition, the synchronizing arrangement includes a horizontal synchronizing circuit, more specifically a phase-locked loop, to which the horizontal synchronizing pulses are applied for the purpose of synchronization. When, switching criterion is present for a first presettable number of picture lines, the horizontal synchronizing circuit is switched to a fixed rated frequency. When the switching criterion is not satisfied anymore, the horizontal synchronizing circuit is switched back to synchronization by the horizontal synchronizing pulses after a second presettable number of picture lines.