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:
Oct. 28, 1980
Filed:
Apr. 16, 1979
Applicant:
Inventor:
Robert G Culter, Seattle, WA (US);
Assignee:
Tektronix, Inc., Beaverton, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 69 ; 315 10 ; 315 / ;
Abstract
A system and method for varying the phase of an index-related control signal produced within a beam-index display system in a manner compensating for the effects of cross-modulating the index signal with the video drive signals. Provision is made for monitoring the magnitudes of selected video drive signals and for shifting the phase of the control signal in a manner compensating for the effects of such drive signals on the index signal from which the control signal is derived.