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:
Jun. 29, 2010
Filed:
Jul. 24, 2006
Kenji Shino, Kanagawa, JP;
Tadashi Aoki, Kanagawa, JP;
Aoji Isono, Kanagawa, JP;
Kazuhiko Murayama, Kanagawa, JP;
Kenji Shino, Kanagawa, JP;
Tadashi Aoki, Kanagawa, JP;
Aoji Isono, Kanagawa, JP;
Kazuhiko Murayama, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A scanning circuit and an image display device in which the influence of losses in a signal path to scanning wiring and a scanning signal output circuit can be reduced. By considering matrix drive in which one row is driven at a time and two or more of the rows are not simultaneously driven, the 480 rows are divided into six modules and one feedback circuit is provided in correspondence with each module to perform feedback control of the output buffers corresponding to 80 rows. An output from a switch is amplified by an operational amplifier and is input as a compensation signal to all the output buffers by an output voltage compensation circuit. Compensation for a voltage drop is made by using the compensation signal for an increase in voltage such that the apparent voltage drop due to the output current is limited to a small value.