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:
Nov. 09, 2004

Filed:

Jan. 08, 2003
Applicant:
Inventors:

Kazuhiro Koto, Kariya, JP;

Tadaharu Nishimura, Obu, JP;

Assignee:

Denso Corporation, Kariya, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06G 7/70 ; G06F 1/900 ;
U.S. Cl.
CPC ...
G06G 7/70 ; G06F 1/900 ;
Abstract

A computation processing is repeatedly executed in a control program. In the processing, a preceding computation result RamA that is represented as a floating point mode is used for computation of a current result RamA. Whether the preceding computation result RamA is either of non-numeral and infinity is determined. When the preceding computation result RamA is either non-numeral or infinity, the processing does not proceed to next computation but substitutes a default value for a variable RamA. Here, the processing substitutes a target value for the variable RamA if the variable RamA has a characteristic of converging on the target value in the computation processing.


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