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. 12, 2010
Filed:
Oct. 03, 2007
Masaaki Ochi, Osaka, JP;
Hiroshi Deguchi, Osaka, JP;
Masaaki Ochi, Osaka, JP;
Hiroshi Deguchi, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An antenna device includes: a transmitting unit which is connected to a control unit of an in-vehicle device mounted at a vehicle; and a transmission antenna connected to the transmitting unit. The transmitting unit operates the transmission antenna based on a binary signal and a carrier signal from the control unit. The transmitting unit includes: a duty ratio controller that modifies the binary signal to a duty ratio signal having a prescribed duty ratio and outputs the duty ratio signal; and a driving circuit that supplies an energizing current to the transmission antenna based on the carrier signal. The duty ratio controller changes intensity of the signal transmitted from the transmission antenna by changing the energizing current according to the duty ratio signal so as to form a desired communication range.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile