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. 03, 1984
Filed:
Mar. 23, 1983
Applicant:
Inventor:
Ronald M Jackson, Portland, OR (US);
Assignee:
Tektronix, Inc., Beaverton, OR (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H / ;
U.S. Cl.
CPC ...
307595 ; 307603 ; 3281291 ; 333138 ;
Abstract
A programmable delay circuit comprises input and output multiplexers, a delay device provided between the multiplexers, and a negative feedback path. When the input multiplexer selects an input logic signal, the delay time is controlled by the output multiplexer. When the input multiplexer selects the feedback path, the delay circuit acts as a ring oscillator for generating a square-wave signal whose period is twice the selected delay time. Additional delay devices and multiplexers may be provided between the input and output multiplexers.