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. 20, 1992
Filed:
Sep. 26, 1991
Applicant:
Inventor:
Arthur J Metz, Gervais, OR (US);
Assignee:
Tektronix, Inc., Wilsonville, OR (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307262 ; 307529 ; 307608 ; 328155 ; 328 55 ;
Abstract
A low jitter clock phase adjust system divides an input clock signal into three clock signals having precisely equal phase differences from each other. The three clock signals are converted into current vectors and input to a trio of two-quadrature multipliers. The current vectors are multiplied by separate control signals generated from an input phase control signal. The separate control signals are generated such that only one of the separate control signals varies at a time. The result is a phase response output that is a linear function of the input phase control signal and that provides a phase adjustment range from -60.degree. to 360.degree..