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:
Jul. 12, 2022
Filed:
Apr. 28, 2020
Applicant:
Denso Corporation, Kariya, JP;
Inventor:
Kenji Kato, Kariya, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G07C 9/00 (2020.01); B60R 25/24 (2013.01);
U.S. Cl.
CPC ...
G07C 9/00309 (2013.01); B60R 25/245 (2013.01); G07C 2009/00555 (2013.01); G07C 2009/00769 (2013.01);
Abstract
A transmission control device is used in an authentication system. The authentication system enables control of an authentication target based on authentication established by verification via wireless communication between the authentication target and a portable device carried by a user. The transmission control device outputs a drive current to a transmission antenna to cause the transmission antenna to transmit a signal having a predetermined frequency band. The transmission control device adjusts the output drive current. The transmission control device detects a current flowing through the transmission antenna.