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. 20, 1998
Filed:
Jan. 22, 1996
Applicant:
Inventor:
John C Reynolds, Beaverton, OR (US);
Assignee:
Tektronix, Inc., Wilsonville, OR (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348181 ; 348194 ;
Abstract
A digital test signal generator includes the ability to adjust the SCH phase of the output test signal. A color frame reset pulse is generated at the beginning of each color frame of the output test signal. The color frame reset pulse is input to a direct digital signal synthesizer together with an SCH phase adjust signal to initialize the synthesizer with an SCH phase offset at the beginning of each color frame. By varying the amount of the SCH phase offset, the SCH phase in the output test signal is varied.