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:
Sep. 22, 2009
Filed:
Jul. 02, 2007
Yutaka Hayashi, Ibaraki, JP;
Yasushi Nagamune, Ibaraki, JP;
Toshitaka Ohta, Ibaraki, JP;
Abstract
The present invention is made to realize a two dimensional optical sensor array having improved performance, for instance, at least one of improved response time, improved intermixing problem, improved dynamic range, improved ability to sense a lower illuminance optical image and improved signal to noise ratio. For these purposes, an optical sensor array with a novel sensing method is proposed. For sensing each of the optical sensor in the array, one of a selected group of plurality of interconnecting means is selected and is driven from a first electrical potential to a second electrical potential while rest of the selected group of plurality of interconnecting means are kept to the first electrical potential, then, photo-electrical current from optical sensors connected to the selected one of the selected group of plurality of interconnecting means is sequentially sensed at around the second electrical potential through the selected one of the selected group of plurality of interconnecting means, by sequentially driving each one of unselected group of plurality of interconnecting means from a third electrical potential to a fourth electrical potential and then from the fourth electrical potential to the third electrical potential.