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:
Feb. 08, 2000
Filed:
Apr. 29, 1997
Takashi Suzuki, Tokyo, JP;
Shinobu Arimoto, Yokohama, JP;
Nobuyuki Watanabe, Yokohama, JP;
Kazuhito Ohashi, Yokohama, JP;
Akiko Kanno, Kashiwa, JP;
Hiroyuki Tsuji, Yokohama, JP;
Tetsuya Nakamura, Kawasaki, JP;
Shingo Kitamura, Minemachi, JP;
Tsunao Honbo, Kawasaki, JP;
Junichi Noguchi, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
It is an object to identify a failed portion in a circuit for image processing and notify a service center of the failed portion, thereby enabling the failed circuit to be promptly replaced. Circuit portions of image processing units are constructed on separate substrates. As processing routes of an image signal which is inputted from an A/D converting unit, a route in which the image signal passes through a given circuit portion and a route in which the image signal doesn't pass therethrough are set. Data of a predetermined pattern is processed by those processing routes. The presence or absence of a failure of each circuit portion is discriminated from the processing results. The discrimination result is transmitted to an external apparatus installed in a service center.