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. 28, 2017
Filed:
Aug. 22, 2014
Honda Motor Co., Ltd., Tokyo, JP;
Katsuyasu Yamane, Wako, JP;
Masayuki Yamazaki, Wako, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
A smart entry system comprises a communication section and a control device. Upon determination that a mobile device has continued to be present within a first transmission area for a predetermined time or over, the control device lowers first transmitter power output of a first electromagnetic wave to be transmitted from the communication section to second transmitter power output of the first electromagnetic wave so that the first transmission area is narrowed to a second transmission area until no more response is received from the mobile device. Then, the communication section not only transmits the first electromagnetic wave having the second transmitter power output and generating the second transmission area but also transmits, with a second cyclic period longer than the first cyclic period, a second electromagnetic wave, the second electromagnetic wave has the first transmitter power output and generates the first transmission area which is not narrowed.