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. 21, 2017
Filed:
Jan. 15, 2016
Alps Electric Co., Ltd., Tokyo, JP;
Akira Miyazawa, Miyagi-ken, JP;
ALPS ELECTRIC CO., LTD., Tokyo, JP;
Abstract
A keyless entry apparatus includes: a vehicle-side device provided in a vehicle, the device including a vehicle-side transmitter that transmits a request signal and a vehicle-side receiver that receives an answer signal; and a mobile device including a mobile device receiver that receives the request signal and a mobile device transmitter that transmits the answer signal in accordance with the request signal. The vehicle-side device includes at least one modulator that modulates the request signal, the mobile device includes at least one demodulator that demodulates the request signal in accordance with the corresponding at least one modulator, and the request signal includes a signal modulated by the at least one modulator. Switching between modulation methods for the request signal is performed at at least one timing.