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. 26, 2016
Filed:
Apr. 09, 2014
United Memories, Inc., Colorado Springs, CO (US);
Oscar Frederick Jones, Jr., Colorado Springs, CO (US);
Jon Allan Faue, Colorado Springs, CO (US);
United Memories, Inc., Colorado Springs, CO (US);
Abstract
A method for correcting the duty cycle of a clock signal uses two-dual-slope integrators with two comparators; each comparator is connected to both integrators and configured to include a 'dead band' when the input pulse duty cycle is at or near 50%. One comparator detects when duty cycle is high and the other comparator detects when the duty cycle is low. When the duty cycle is within the 'dead band' range, neither comparator goes valid. This provides an analog filter where the output comparators will not instantaneously switch between opposite duty cycle correction states. When the duty cycle is greater or less than 50%, the integrated voltages on the two integrators move in opposite directions producing twice the signal magnitude on differential inputs of the comparators, as compared with using a single integrator architecture.