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System including a hand-held communication device having low and high power settings for remotely controlling the position of a door of a land vehicle and key fob for use in the system

  • US 9,830,755 B2
  • Filed: 02/17/2016
  • Issued: 11/28/2017
  • Est. Priority Date: 02/17/2016
  • Status: Active Grant
First Claim
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1. A system for remotely controlling the position of a land vehicle door externally of the vehicle, the door being capable of moving between a closed position in which the door covers a vehicle opening and an opened position in which the door uncovers the opening to provide access to the vehicle, the system comprising:

  • a hand-held communication device having a low-power setting and a high-power setting for wirelessly transmitting externally of the vehicle low-power command signals and high-power command signals, respectively, drawn from an energy storage element within the hand-held communication device, each of the command signals containing command data which identifies a command issued by a pedestrian carrying the hand-held device and identification data which identifies the hand-held device;

    a mobile communication device supported on the vehicle for movement therewith and capable of wirelessly receiving the high-power and low-power command signals, the mobile device being operative to remove the identification and command data from the command signals; and

    control logic coupled to the devices and operative to determine if the hand-held device is an authorized hand-held device based on the identification data and operative to generate door-opening command signals based on the command data wherein the hand-held and mobile communication devices are capable of wirelessly transmitting and receiving, respectively, the high-power, command signals as long as a pedestrian carrying the hand-held device is within a first range of the mobile device and wherein the hand-held and mobile communication devices automatically transmit and receive, respectively, the low-power command signals as long as a pedestrian carrying an authorized hand-held device is within a second range of the mobile device and wherein the second range is less than the first range.

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