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. 24, 1989
Filed:
Aug. 15, 1988
Applicant:
Inventors:
Roy O Mitchell, Hillsboro, OR (US);
Milton D Klaudt, Beaverton, OR (US);
Kathleen F Ullom, West Linn, OR (US);
Assignee:
Tektronix, Inc., Beaverton, OR (US);
Primary Examiner:
Int. Cl.
CPC ...
H05B / ; H03H / ;
U.S. Cl.
CPC ...
315 94 ; 333 / ; 333 32 ;
Abstract
A cathode drive circuit couples a video drive signal from a cathode output amplifier to the cathode of a cathode ray tube along a first matched transmission line. Any signal energy not absorbed by the cathode is coupled along a second matched transmission line to a power dissipating load. The use of matched transmission lines avoids reflections in the system and eliminates attendant signal degradation. The power dissipating load can be located at any distance remote from both the cathode output amplifier and the cathode so as to minimize heat dissipation problems.