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:
Jul. 17, 1984
Filed:
Sep. 28, 1981
Applicant:
Inventors:
William R Bistline, Austin, TX (US);
Stephen C Hatcher, Austin, TX (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
315408 ; 315382 ; 315411 ;
Abstract
In a cathode ray tube (CRT) display system utilizing a semiconductor switch in the output stage of the fast scan axis, a resonant circuit is coupled to the flyback circuit for production of a dynamic focus voltage. The capacitance required for the flyback circuit is derived from the equivalent capacitance of the dynamic focus resonant circuit, thereby eliminating the need for a separate flyback capacitor.