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:
Jan. 10, 1989
Filed:
Jun. 30, 1987
Applicant:
Inventors:
James H Doty, II, Indianapolis, IN (US);
Jeffery B Lendaro, Noblesville, IN (US);
Assignee:
RCA Licensing Corporation, Princeton, NJ (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 88 ; 358243 ; 361 91 ; 328-9 ;
Abstract
A phase-lock-loop circuit of a deflection apparatus generates a first signal at the horizontal frequency during normal operation. The first signal is coupled to a phase-control-loop circuit that maintains the deflection current timing in phase with the first signal. A fault protection circuit disables the generation of signal transitions in the first signal when a fault condition occurs. A circuit that detects the presence of transition edges in the first signal prevents the operation of the deflection output stage when the transition edges in the first signal are missing.