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:
Jan. 04, 2000
Filed:
Mar. 24, 1998
Applicant:
Inventors:
Hiroshi Miyamoto, Shizuoka, JP;
Yasuhiro Miyazawa, Shizuoka, JP;
Assignee:
Yazaki Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B60R / ;
U.S. Cl.
CPC ...
307 102 ; 307104 ; 180287 ;
Abstract
A key entry system having redundant communication between the IC card and the vehicle controller to ensure continuous operation. The ID card and the vehicle controller each includes a memory for storing an ID code, an electromagnetic induction power supply/transmission circuit for transmitting and receiving the ID code and an RF modem also for transmitting and receiving the ID codes. Thus, in the event that communication cannot be made between the RF modems, the key entry system will still function by communication between the electromagnetic induction power supply/transmission circuits.