Title:
LOW COST, PASSIVE TYPE SAFETY ENTRY SYSTEM
Document Type and Number:
Japanese Patent JP2003097112
Kind Code:
A
Abstract:
To prevent wiretap of an ID code group to be sent back by answering an inquiry signal in a keyless entry system.
The inquiry signal is relayed to a transponder 14 through an individual person 10 from a control unit 18 by the capacitive coupling to enable certified access of the individual person 10 to a security area 12.
Inventors:
MEIER HERBERT
KNEBELKAMP MICHAEL
WINTERER ALBERT
KNEBELKAMP MICHAEL
WINTERER ALBERT
Application Number:
JP2002194831A
Publication Date:
April 03, 2003
Filing Date:
July 03, 2002
Export Citation:
Assignee:
TEXAS INSTRUMENTS DEUTSCHLAND
International Classes:
B60R25/20; E05B81/78; E05B49/00; G06K7/08; G07C9/00; H04B13/00; (IPC1-7): E05B49/00; B60R25/00
Attorney, Agent or Firm:
Akira Asamura (3 outside)