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
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United States of America Patent
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Nov 28, 2017
Grant Date -
Aug 17, 2017
app pub date -
Feb 17, 2016
filing date -
Feb 17, 2016
priority date (Note) -
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Abstract
A system for remotely controlling the position of a land vehicle door includes a hand-held communication device such as a key fob having a low-power setting and a high-power setting for wirelessly transmitting low-power command signals and high-power command signals, respectively. 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 is supported on the vehicle for movement therewith and is capable of wirelessly receiving the high-power and low-power command signals. Control logic is coupled to the devices. 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 predetermined short range of the mobile device.
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