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:
Feb. 10, 1976
Filed:
Nov. 11, 1971
Willem Hendrik Amsen, Eindhoven, NL;
Paulus Joseph Hovens, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A circuit arrangement in a picture display apparatus including an integrator having a time constant which is of the same order as one field period and which integrates the control voltage generated by the line phase discriminator. The voltage thus integrated is applied by means of a switch to the output terminal of the discriminator during each field blanking period. As a result both the flickering effect and the shift which may occur at the upper edge of the screen of the picture display tube as a result of the broad field synchronizing pulses and the equalizing pulses disappear. The circuit arrangement also includes a circuit which separates the discriminator from the integrator and which may be constituted as a long-tailed pair arrangement.