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:
Oct. 16, 2001
Filed:
Apr. 10, 2000
Koji Sawada, Atsugi, JP;
Hiraku Kozuka, Hiratsuka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Photoelectric conversion chips having the same structure are disposed in line and electrically connected together to constitute a multi-chip type image sensor. The gate of a load transistor of a source follower circuit of each of the photoelectric conversion chips is connected in common to one constant current source circuit. The constant current source circuit and photoelectric conversion chips are mounted on a substrate. With this structure, the common current source circuit is used for all the source follower circuits so that noises will not be generated on the photoelectric conversion chip unit basis. The multi-chip type image sensor can therefore improve the image quality, and horizontal or vertical stripes to be caused by noises otherwise generated in separate constant current source circuits can be removed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile