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. 20, 2007
Filed:
May. 13, 2005
Takayuki Hiramitsu, Aichi, JP;
Kiyokazu Ohtaki, Aichi, JP;
Tomohiro Ohmura, Aichi, JP;
Toshiki Akita, Aichi, JP;
Teruya Tomiyasu, Toyota, JP;
Noriyasu Onishi, Aichi-ken, JP;
Manabu Mizutani, Ann Arbor, MI (US);
Takayuki Hiramitsu, Aichi, JP;
Kiyokazu Ohtaki, Aichi, JP;
Tomohiro Ohmura, Aichi, JP;
Toshiki Akita, Aichi, JP;
Teruya Tomiyasu, Toyota, JP;
Noriyasu Onishi, Aichi-ken, JP;
Manabu Mizutani, Ann Arbor, MI (US);
Kabushiki Kaisha Tokai Rika Denki Seisakusho, Aichi, JP;
Abstract
A controller for an electronic key system including a portable device and an engine. When the ID code of the portable device cannot be authenticated, the controller instructs the driver of the necessary operations. When a transmitter circuit is transmitting a request signal but a receiver circuit does not receive a signal including an ID code matching the ID code stored in a memory, an authentication ECU authenticates a transponder code of the portable device with a stored transponder code to enable the starting of the engine. The authentication ECU displays the necessary operations for performing transponder code authentication.