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:
Dec. 24, 2013
Filed:
Aug. 06, 2010
Hirotaka Seki, Tokyo, JP;
Atsushi Otani, Moriya, JP;
Shoji Takeda, Tokyo, JP;
Satoru Yamamoto, Abiko, JP;
Keita Takahashi, Abiko, JP;
Hirotaka Seki, Tokyo, JP;
Atsushi Otani, Moriya, JP;
Shoji Takeda, Tokyo, JP;
Satoru Yamamoto, Abiko, JP;
Keita Takahashi, Abiko, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
This invention provides an image forming apparatus that suppresses a control error between CPUs when the CPUs operate in cooperation with each other in distributed control by the CPUs. To accomplish this, the image forming apparatus utilizes a distributed control system. Respective CPUs measure time interval concerning image formation processing using their built-in clock oscillators, and perform operations in cooperation with each other. Correction coefficients are calculated based on the time interval measured by the respective CPUs to correct a measurement error generated by the operation an error of the respective clock oscillators. Clock count values each indicating a timing to drive a load is corrected based on the correction coefficients.