Electronic location system
First Claim
Patent Images
1. A system for locating an object using the Global Positioning Satellite System (GPS), the locating system comprising:
- a locator unit connected to the object;
the locator unit including a first processor, a first transmitter for transmitting a position request signal to the GPS, and a first receiver for receiving a first position signal from the GPS indicative of the position of the object and providing the first position signal to the first processor for storage;
a hand-held remote unit selected from the group laptop computer, GPS watch, cellular telephone and PDA for determining a position of the remote unit relative to the object;
the remote unit including a second processor, a second transmitter for transmitting a position request signal to the GPS, a second receiver for receiving a second position signal from the GPS indicative of the position of the remote unit and providing the second position signal to the second processor for storage;
means connected to the second processor for generating a request signal requesting the first location signal from the locator unit, whereupon the locator unit retrieves the first location signal from the first processor and transmits the first location signal to the remote unit, such that upon receipt of the first location signal the second processor compares the first location signal to the second position signal and determines a position of the remote unit relative to the object; and
display means connected to the second processor for displaying a visual signal and issuing an audio signal to indicate the position of the remote unit relative to the object, the display means including an indicator having directional arrows showing a direction from the remote unit, and an area on the display indicating by color the relative altitudes of the remote unit and the object.
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Abstract
A vehicle locating system that includes a hand-held remote unit associated with a user and a locator unit associated with a vehicle. The locator unit utilizes a GPS to store a location of the vehicle. The remote unit is selected from the group laptop computer, key ring, GPS watch, cellular telephone and PDA, and it utilizes a GPS to store a location of the user. The remote unit queries the locator unit to obtain the location of the vehicle, and then compares the location of the vehicle to its own location, whereupon the remote unit displays a direction for the user to travel in order to reach the vehicle.
89 Citations
8 Claims
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1. A system for locating an object using the Global Positioning Satellite System (GPS), the locating system comprising:
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a locator unit connected to the object;
the locator unit including a first processor, a first transmitter for transmitting a position request signal to the GPS, and a first receiver for receiving a first position signal from the GPS indicative of the position of the object and providing the first position signal to the first processor for storage;
a hand-held remote unit selected from the group laptop computer, GPS watch, cellular telephone and PDA for determining a position of the remote unit relative to the object;
the remote unit including a second processor, a second transmitter for transmitting a position request signal to the GPS, a second receiver for receiving a second position signal from the GPS indicative of the position of the remote unit and providing the second position signal to the second processor for storage;
means connected to the second processor for generating a request signal requesting the first location signal from the locator unit, whereupon the locator unit retrieves the first location signal from the first processor and transmits the first location signal to the remote unit, such that upon receipt of the first location signal the second processor compares the first location signal to the second position signal and determines a position of the remote unit relative to the object; and
display means connected to the second processor for displaying a visual signal and issuing an audio signal to indicate the position of the remote unit relative to the object, the display means including an indicator having directional arrows showing a direction from the remote unit, and an area on the display indicating by color the relative altitudes of the remote unit and the object. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of locating a vehicle in an area that is crowded with vehicles, comprising the steps of:
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providing a locator unit;
mounting the locator unit on a vehicle;
providing a first GPS device in the locator unit to obtain vehicle-location-information;
programming the first GPS device to be activated upon a user parking the vehicle and turning off the vehicle, whereupon the locator unit stores vehicle-location-information including latitude, longitude, and altitude of the vehicle as obtained by the first GPS device;
providing a hand-held remote unit to be carried by the user, the remote unit being selected from the group laptop computer, GPS watch, cellular telephone and PDA;
providing a second GPS device in the remote unit to obtain user-location-information;
providing a first button on the remote unit to activate the second GPS device to obtain and store user-location-information including latitude, longitude and altitude of the user;
providing a second button on the remote unit that is operable to obtain latitude, longitude and altitude vehicle-location-information that is stored in the locator unit;
providing that upon the user parking and leaving the vehicle in the area, and thereafter returning to the area, the user may push the first button to obtain user-location-information, and may push the second button to obtain vehicle-location-information;
providing that the remote unit compares the user-location information to the vehicle-location-information and displays a direction for the user to move in order to approach the vehicle, that the remote unit displays any difference in altitude between the user and the vehicle, and that the remote unit issues an audible signal indicating a distance between the user and the vehicle. - View Dependent Claims (8)
providing that transmission mediums used in the method are selected from the group RF radio waves, Doppler RF, microburst access system, Satellite radio, CDPD, GSM, TDMA, CDMA, AMPS, RFID and MOAERIS.
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Specification