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:
Feb. 15, 2000
Filed:
Jun. 24, 1997
Applicant:
Inventors:
Fee Lee, Framingham, MA (US);
Keith Childs, Whitinsville, MA (US);
Assignee:
Digital Equipment Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
327277 ; 327262 ; 327278 ;
Abstract
A delay circuit comprises a tapped delay element line constructed from delay elements with fixed delay intervals and a multiplexer for selecting the signal at one of the taps to produce a variable delay through the circuit. The multiplexer is controlled by a selection circuit which receives an input indicative of the actual delay time through the delay circuit from an oscillator constructed from the same fixed delay elements as the delay line.