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. 31, 2026
Filed:
Jul. 26, 2021
Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;
Takuro Kanemura, Hokkai-do, JP;
Yoshiyuki Kurokawa, Kanagawa, JP;
Hiromichi Godo, Kanagawa, JP;
Kazuki Tsuda, Kanagawa, JP;
Satoru Ohshita, Hyogo, JP;
Hidefumi Rikimaru, Tokyo, JP;
Abstract
A novel semiconductor device is provided. An analog signal is converted into a digital signal using a comparison portion comparing two current values, a control portion, and a current output digital-analog conversion portion. The control portion has a function of generating a sign bit showing a magnitude relation between the two current values, a function of converting a difference between the two current values into a digital signal by successive approximation, and a function of outputting the sign bit and the digital signal.