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.

Date of Patent:
Jan. 22, 1985

Filed:

Oct. 12, 1982
Applicant:
Inventors:

Hiroomi Katayama, Machida, JP;

Yoshiaki Hirosawa, Shiki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ;
U.S. Cl.
CPC ...
123612 ; 123617 ; 123414 ; 123643 ;
Abstract

An engine ignition interpolation apparatus including three reference position sensors, a single crank angle sensor and a counter resettable by outputs from the reference position sensors and used for counting output pulses from said crank angle sensor. Also included are a decoder for generating an output when the counter produces a count output which exceeds a preset value, flip-flops connected respectively to the reference position sensors in a ring arrangement and triggerable by the outputs from the reference position sensors for synchronous operation therewith, and a logic circuit for seeking conformity between the output from the decoder and set outputs from the flip-flops to produce a quasi or replacement pulse for one of the reference position sensors which fails to produce an output, thereby interpolating a reference position pulse.


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