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. 03, 1984
Filed:
Jul. 14, 1981
Yasuo Taguchi, Yokohama, JP;
Satoshi Nakao, Tokyo, JP;
Abstract
An ignition control device includes a signal generating circuit for generating an output signal which has a frequency corresponding to the rotation speed of an engine, a rotation speed indication voltage generating circuit for generating a voltage which has a level corresponding to the rotation speed of engine, a saw-tooth wave generating circuit for generating a saw-tooth wave signal which changes at a frequency corresponding to the output signal from the signal generating circuit and at a rate corresponding to the voltage applied from the rotation speed indication voltage generating circuit, and a control circuit for generating an ignition signal every time when the saw-tooth wave signal has reached a predetermined voltage. The ignition control device further includes a control circuit for comparing a reference voltage with the saw-tooth wave signal in response to an output signal from the signal generating circuit and controlling the voltage stored in the voltage generating circuit according to the difference between both input signals.