| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 340500630 | Including timing means (e.g., clock) | 6 |
| 20100164683 | METHOD AND APPARATUS FOR AUTOMATICALLY DISARMING A SECURITY SYSTEM - A security system comprises a system control panel for arming and disarming the security system. A door sensing unit comprises a first radio frequency (RF) transceiver interconnected with the system control panel over a network. The first RF transceiver is mounted proximate to a door that defines at least a portion of a perimeter around an area to be monitored by the security system. The first RF transceiver has an RF detection field proximate to the door. A disarm device comprises a second RF transceiver that automatically transmits a disarm device packet. The first RF transceiver receives the disarm device packet when the second RF transceiver is within the RF detection field. The first RF transceiver sends a disarm message to the system control panel over the network to disarm the security system based on at least the disarm device packet. | 07-01-2010 |
| 20110025460 | VEHICLE AND FOB COMMUNICATION ARRANGEMENT - An example base station assembly includes a transmitter configured to communicate a challenge signal and at least one timing signal to a plurality of fobs. The base station initiates a vehicle operation in response to at least one return signal. The return signal is communicated to the base station from at least one of the fobs in response to the timing signal. | 02-03-2011 |
| 20120154114 | ELECTRONIC KEY SYSTEM AND ELECTRONIC KEY - An electronic key system that performs ID verification communication to verify an ID of an electronic key. The ID verification communication is started by transmission of a wireless signal from a vehicle and performed between the vehicle and the electronic key. The electronic key system determines the location of the electronic key in accordance with the received signal strength of a radio wave used for the ID verification communication. A signal strength measurement circuit measures a first signal strength, which is the received signal strength when a signal from the electronic key is received, and a second signal strength, which is the received signal strength of the radio wave during a vacant time when the electronic key is performing the ID verification communication. A control unit controls operation of the electronic key in accordance with a measurement result of the first and second signal strengths. | 06-21-2012 |
| 20140292483 | HANDS-FREE SYSTEM AND METHOD FOR OPENING TRUNK - A hands-free system and method for opening a trunk, that include a trunk antenna and a smart key that transmits a sensing response signal or an authentication response signal, when receiving a sensing signal or an authentication signal from the trunk antenna. In addition, the smart key receives and stores a hands-free function setting and transmits the sensing response signal with function setting information when the hands-free function is set. Further, a receiving antenna receives a sensing response signal or an authentication response signal from the smart key. A controller transmits an authentication signal when the trunk antenna transmits a sensing signal during a predetermined period and the receiving antenna receives a sensing response signal that includes function setting information a predetermined number of times. The controller performs authentication when the receiving antenna receives an authentication response signal and outputs a trunk opening signal when the authentication is allowed. | 10-02-2014 |
| 20150015367 | PASSIVE REMOTE KEYLESS ENTRY SYSTEM WITH TIME-BASED ANTI-THEFT FEATURE - Method for preventing security breaches via the two-thief method of attack of passive remote keyless entry systems for vehicles. The method involves the measurement of air travel time of the RF messages between the RKE fob and the vehicle. Multiple round trips between the fob and the vehicle are employed to magnify the distance covered by the messages and thereby allow accurate measurement of the air travel time. | 01-15-2015 |
| 20150325070 | KEYLESS ENTRY DEVICE - A portable device acquires a signal of noise component data that is based on signal intensity of a signal received in an OFF time in which the portable device does not communicate with the vehicle-side device, and then transmits an information signal that is based on the noise component data, and a vehicle-side device transmits a measurement signal controlled based on the information signal, at a predetermined time period. | 11-12-2015 |
