About 94 results
https://drivepatents.com/patents/1086378 · 16 Jun 2004
A security system (11, 51, 61, 64, 66) for notifying a driver that a mechanical key (18) is being retained in a portable device (14, 52, 62, 67, 78). The portable device has an indicator (19a) that is illuminated when the mechanical key is not retained in ...
https://drivepatents.com/patents/1086698 · 9 Jun 2004
For a machine controller (12) for controlling a machine (11) of an operating machine, a personal digital assistant (PDA) (14) which makes communications via a non-contact communications medium (15) such as infrared light or radio waves. This PDA (14) has, ...
https://drivepatents.com/patents/1087834 · 21 Apr 2004
A portable unit (20) provides control instruction for locking/unlocking vehicle door to in-vehicle unit (2). An encryption unit (10) arranged between controller (7) and EEPROM (9) of in-vehicle unit, encrypts the security data with cipher key based on cont...
https://drivepatents.com/patents/1088049 · 14 Apr 2004
A vehicular remote control system includes, on a portable device side, a portable device side first receiver, a portable device side transmitter, and a portable device side second receiver and, on a vehicle side, a vehicle side first transmitter, a vehicle...
https://drivepatents.com/patents/1089866 · 4 Feb 2004
A door or hinged-flap closure device has at least one locking element for the door/flap which is actuated by a pneumatic device and an electronic control device on the goods vehicle operates the actuating device. On the vehicle, a transceiver (20) is arran...
https://drivepatents.com/patents/1093940 · 20 Aug 2003
A vehicle-mounted device communication controller includes a vehicle-mounted unit for communicating with ID-registered portable units, a switch-detection mechanism for detecting pressing of an operation knob, a switch-operation restriction mechanism for re...
https://drivepatents.com/patents/1094079 · 13 Aug 2003
An electronic key system has a portable apparatus, an operation control device and an update control device. The portable apparatus selectively transmits a first signal and a second signal. The operation control device authorizes an operation of a key base...
https://drivepatents.com/patents/1096251 · 2 May 2003
In a self-power generation type transmitter, piezoelectric elements (21) are used as a power source for transmission and generated power is efficiently utilised so that the transmission of a signal requiring a relatively high electric power can be performe...
https://drivepatents.com/patents/1096608 · 23 Apr 2003
The invention relates to a procedure for the authentication of a first transceiver unit with respect to a second transceiver unit, located at a distance to it, whereby by means of the first unit a first signal is transmitted via an aerial connected to it; ...
https://drivepatents.com/patents/1096567 · 23 Apr 2003
The system has an access control part (4) and an authentication element (2) which includes a communication channel (6) for exchanging a signal (2) that is modulated based on frequency shift keying. At least two receivers (8a,8b) separately receive the two ...