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:
Sep. 13, 1977
Filed:
Jan. 05, 1976
Judson A Hofmann, Schaumburg, IL (US);
Zenith Radio Corporation, Glenview, IL (US);
Abstract
A television receiver includes conventional circuitry for receiving processing and detecting an information bearing signal. Vertical scansion means respond to recovered synchronizing information and provide vertical scansion of a conventional cathode ray tube. A horizontal oscillator coupled to an output amplifier and high voltage generator generates a scansion signal and provides horizontal scansion of the cathode ray tube. An automatic phase control loop (APC) includes a differential amplifier phase detector which responds to the reference sync pulses and the horizontal output signal to produce an error voltage which is stored in a hold capacitor. A speed control amplifier coupled to the receiver AGC system varies the amount of phase detector action directly with signal strength to vary system speed.