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:
Apr. 29, 2003
Filed:
Apr. 17, 2002
Ashraf K. Kamel, Kokomo, IN (US);
David D. Moller, Westfield, IN (US);
Larry R. Hach, Kokomo, IN (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A circuit for converting an analog signal to a PWM signal samples an amplitude of the analog signal at first sampling rate and a second slower sampling rate, and produces corresponding first and second signals. A comparison signal defines a first state when the first signal is greater than the second signal, and otherwise defines a second opposite state. The PWM signal switches from a first signal level to a second signal level when the comparison signal switches from the first state to the second state only if the comparison signal thereafter remains in the second state for a specified delay period, and the PWM signal switches from the second signal level to the first signal level when the comparison signal switches from the second state to the first state only if the comparison signal thereafter remains in the first state for the delay period.