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:
Mar. 22, 1994
Filed:
Jan. 07, 1993
Masayuki Uno, Ina, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A solid state image pickup apparatus comprises pixels each of which is composed of a photoelectric transducer element having a function of amplification, and further comprises FPN suppression circuits basic cells provided for the pixel, wherein the FPN suppression circuit comprises an inverting amplifier; an input capacitor connected between the output of the pixel and the input of the inverting amplifier; a n-MOS transistor for supplying an initial voltage to the input of the inverting amplifier; a feedback capacitor one terminal of which is connected to the input of the inverting amplifier; a n-MOS transistor connected between the other terminal of the feedback capacitor and the output of the inverting amplifier; and a n-MOS transistor connected between the node connecting the above two elements and a reference voltage source. As an advantage of this configuration, it is possible to achieve a solid state image pickup apparatus in which the FPN, caused by offset difference among the pixels composed of photoelectric transducer elements having a function of amplification, is suppressed without increasing chip area, and in which it is possible to perform a non-destructive readout.