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. 28, 1989
Filed:
Mar. 30, 1987
Tatsuo Sakaue, Yokohama, JP;
Tatsuya Yoshie, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A charge transfer device includes a charge transfer unit having a plurality of charge transfer cells for transferring a signal charge by the charge transfer cells, a first floating diffusion region adjacent to the charge transfer unit for storing the signal charge transferred by the charge transfer cells, first control switch means driven by a first reset pulse, and a first reset power source connected to the first floating diffusion region through the first control switch means. The charge transfer device further includes second control switch means driven by a second reset pulse, a second reset power source connected to the second floating diffusion region through the second control switch means, a capacitor coupling the first floating diffusion region to the second floating diffusion region, and detector means for detecting a potential change of the second floating diffusion region to output the potential change as an output signal corresponding to the signal charge. MOS transistors may be employed for the control switches in the output stages. This novel charge transfer device can provide a sufficiently broad output dynamic range and an output signal having a good linearity even when a lower voltage is used for the power supply voltage.