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. 16, 1989
Filed:
Dec. 15, 1986
Masahiko Yakuwa, Saitama, JP;
Kikuo Tomozawa, Tokyo, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An engine control system includes a pulse generator for generating a synchronous pulse signal synchronously with the speed of rotation of an engine, a timer for generating a timer pulse signal of a constant period, and a microcomputer having an interrupt input terminal for receiving the pulse signals as interrupt signals and operable to start processing operations in response to the interrupt signals, so that a number of controlled objects of the engine can be controlled on the basis of data indicative of operating conditions of the engine. Data is processed in response to an interrupt caused by the synchronous pulse signal to control a first-group controlled object of the number of controlled objects and setting a flag to request processing of data items related to the first-group controlled object. Data is then processed in response to an interrupt caused by the timer pulse signal to control a second-group controlled object of the number of controlled objects and setting a flag to request processing of a data item related to the second-group controlled object. In the absence of the interrupts, a plurality of predetermined data items and the data items requested to be processed by the flags are processed.