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:
Apr. 12, 1988
Filed:
Nov. 04, 1986
Applicant:
Inventor:
Wolfgang F Dietz, New Hope, PA (US);
Assignee:
RCA Corporation, Princeton, NJ (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H04N / ; H04N / ;
U.S. Cl.
CPC ...
315411 ; 358190 ; 358243 ;
Abstract
In a video display apparatus, the high voltage generating circuitry responds to trigger pulses derived from horizontal deflection retrace-related pulses. During normal horizontal deflection operation, the trigger pulses produced are of sufficient amplitude to cause normal triggering of the high voltage generating circuits resulting in normal high voltage levels being produced. Under abnormal horizontal deflection operation in which the horizontal deflection current is not produced, the trigger pulses will be of insufficient amplitude to trigger the high voltage generating circuit, and hence no high voltage level is produced.