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. 06, 2001
Filed:
Mar. 10, 1999
Akira Kinno, Yokohama, JP;
Masaki Atsuta, Yokosuka, JP;
Takuya Sakaguchi, Otawara, JP;
Manabu Tanaka, Otawara, JP;
Mitsushi Ikeda, Yokohama, JP;
Kouhei Suzuki, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An image detecting device has a large dynamic range that deals with a plurality of image detecting modes. The image detecting device is composed of pixels e (i, j) arranged in a matrix array. Each pixel has a photoelectric element. In each pixel, a capacitor,and a protecting diode,are disposed. The capacitor,stores electric charge corresponding to the intensity of penetrated light to the relevant pixel. The protecting diode limits the capacitance. A bias voltage is supplied to the protecting diode,through a bias line Bias. The bias voltage is adjusted by a bias voltage controlling system,corresponding to the frame rate. Thus, the influence of a leak current in the off-state of the protecting diode,can be alleviated against electric charge stored in the capacitor,. Consequently, an image with a high S/N ratio can be obtained regardless of the frame rate.