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. 11, 2022
Filed:
Aug. 31, 2021
Japan Display Inc., Tokyo, JP;
Xingle Wang, Tokyo, JP;
JAPAN DISPLAY INC., Tokyo, JP;
Abstract
A fingerprint capturing apparatus includes a plurality of panel capacitors each configured to output an alternating charge signal indicating a capacitance proportional to a proximity of a portion of a subject's finger, a de-serialized amplifier circuit including an operational amplifier that receives the alternating charge signal from the plurality of panel capacitors, and a change in condition control circuit configured to make a change in an operating condition of the de-serialized amplifier based on a voltage of an output of the operational amplifier. The change in condition control circuit also configured to output a count of a number of times of making the change in the operating condition of the de-serialized amplifier. The apparatus also including a processor circuit configured to recognize the subject's fingerprint based on the count of the number of times of making the change in the operating condition of the de-serialized amplifier.