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:
May. 08, 1990
Filed:
Jun. 30, 1989
Charles J DeBiasi, Allen Park, MI (US);
Wesley D Boyer, Dearborn, MI (US);
Ford Motor Company, Dearborn, MI (US);
Abstract
A distributed processing system in an automotive environment achieves enhanced noise immunity and reduces the processing burden and background loop time of the master controller by providing for communication of signals between a master controller and a slave controller by pulse width modulated communication signals. In a preferred embodiment, the communicated signal is a spark advance which is transmitted to an ignition module for implementing spark events in an internal combustion engine. The spark advance pulse width is a linearly decreasing function of spark advance value since increased spark advance is associated with an increase in engine speed. The spark advance is encoded into a pulse width signal according to a method which simplifies decoding of the spark advance information in the ignition module.