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:
Mar. 04, 1986
Filed:
Sep. 07, 1983
Antonius H Nillesen, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A line synchronizing circuit for a picture display device comprising a control loop for controlling a line oscillator. An incoming line synchronizing signal and also a reference signal generated by the oscillator are applied to a phase discriminator circuit. The output signal of the phase discriminator circuit is smoothed to obtain the control voltage for the oscillator. Pull-in of the control loop is established by means of a coincidence detector. Prior to that, an edge of the reference signal is compared with the center instant of a line synchronizing pulse. When the control loop is in the pulled-in state, it is changed by the coincidence detector to compare the leading edge of a line synchronizing pulse to the center instant between the said edge of the reference signal and its first preceding edge.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile