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:
Oct. 29, 2019
Filed:
Jan. 23, 2019
Hitachi, Ltd., Tokyo, JP;
Yuki Furubayashi, Tokyo, JP;
Takashi Oshima, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A successive approximation type AD converter includes an in-phase voltage detection and supply circuit that supplies an in-phase voltage obtained by impedance voltage division of a first input analog signal and a second input analog signal to a first capacitance DA converter and a second capacitance DA converter. The first capacitance DA converter samples the first input analog signal with reference to the in-phase voltage, and the second capacitance DA converter samples the second input analog signal with reference to the in-phase voltage. After the sampling period ends, a comparator compares the output of the first capacitance DA converter and the output of the second capacitance DA converter, output voltages of the first capacitance DA converter and the second capacitance DA converter are changed by the control signal of a successive approximation logic unit on the basis of a comparison result, and comparison processing is repeated.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile