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. 08, 2016
Filed:
Nov. 25, 2014
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Sanshiro Shishido, Osaka, JP;
Masahiro Higuchi, Hyogo, JP;
Abstract
The solid-state imaging device includes a D/A converting circuit generating a reference voltage to be used for an A/D conversion. The D/A converting circuit includes: a voltage generating circuit generating an analog voltage according to a digital signal; a buffer circuit (a resistor ladder upper voltage supplying buffer circuit) which buffers the generated analog voltage, the buffer circuit sampling and holding a bias voltage generated inside the buffer circuit, and outputting the buffered analog voltage using the held bias voltage; an analog signal outputting unit (a resistor ladder unit) outputting the reference voltage according to the inputted digital signal, by receiving an output from the buffer circuit; and a pre-charge amplifier which charges a noise-reducing capacitor in conjunction with the sampling and holding by the buffer circuit, the noise-reducing capacitor being connected to the analog signal outputting unit.