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:
Nov. 25, 1980
Filed:
Nov. 27, 1978
James D Richardson, Kokomo, IN (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A microprocessor based engine control system including an engine control unit for producing a plurality of pulse width modulated output signals of programmable frequency. The pulse width and frequency of each output is contained in a control word provided to the engine control unit. The control word contains a pulse width number and a frequency code. The control unit includes a free-running counter and logic means which switches the output signal to one level when the number of stages of the counter defined by the frequency code are all zero and switches the output signal to a second level when the content of the aforementioned number of counter stages is greater than the pulse width modulated number.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile