Method and system for locating target destinations within short ranges
First Claim
1. A method of directing a mobile user with a tracking unit to at least one of a plurality of fixed target units in a predetermined region, each of said fixed target units being installed to represent at least one target entity, each of said fixed target units being adapted to broadcast a predetermined signal representative of said at least one target entity, the method comprising:
- a. assigning at least one target code to each of said plurality of fixed target units to represent at least one target entity for broadcasting by each fixed target unit;
b. entering at least one target code to said tracking unit as said mobile user'"'"'s destination;
c. receiving at least one broadcast signal from at least one of said plurality of fixed target units using said tracking unit;
d. verifying said at least one broadcast signal using said target code and said tracking unit;
e. if said broadcast signal matches said target code, determining at least navigation information of said fixed target unit using said tracking unit;
f. displaying said navigation information using said tracking unit;
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Accused Products
Abstract
A method and system for a local direction finding network is disclosed. The system uses a tracking unit to locate a target location by transmitting signals from the target location to the tracking unit. The tracking unit then verifies the source of the transmission. If matched with the target code entered, the received transmission is used by the tracking unit to determine the bearing and strength, hence navigation information, of the source of the transmission. The tracking unit can then move closer and closer toward the target location based on the navigation information. Many target locations may be represented by a single transmitter, which will direct the tracking unit to the desired target location, based on the known locations of the transmitter and the target location. Additionally, a networked group of transmitters can be implemented, which, through successive handing off, will direct the tracking unit from one cell to the cell where the target location is located.
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Citations
29 Claims
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1. A method of directing a mobile user with a tracking unit to at least one of a plurality of fixed target units in a predetermined region, each of said fixed target units being installed to represent at least one target entity, each of said fixed target units being adapted to broadcast a predetermined signal representative of said at least one target entity, the method comprising:
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a. assigning at least one target code to each of said plurality of fixed target units to represent at least one target entity for broadcasting by each fixed target unit;
b. entering at least one target code to said tracking unit as said mobile user'"'"'s destination;
c. receiving at least one broadcast signal from at least one of said plurality of fixed target units using said tracking unit;
d. verifying said at least one broadcast signal using said target code and said tracking unit;
e. if said broadcast signal matches said target code, determining at least navigation information of said fixed target unit using said tracking unit;
f. displaying said navigation information using said tracking unit;
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29)
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12. A system for directing a user to locate at least one target entity from a plurality of target entities, comprising:
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a plurality of target units adapted to represent said plurality of target entities, each of said target units comprising;
a broadcast unit adapted to broadcast a target signal representative of a predetermined group of target entities;
at least one tracking unit, said tracking unit comprising;
a data entry unit adapted to enter at least one target code entered by said user;
a receiver unit adapted to receive at least one target signal from at least one target unit and to determine if said target signal matches said target code entered;
a direction-finding unit adapted to determine bearing of said target signal if said target signal matches said target code;
a display unit adapted to display the bearing of said target entity.
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25. A system for a direction finding network for a plurality of target locations within a predetermined geographic region, comprising:
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a plurality of target transmitters, each of said plurality of target transmitter being adapted to broadcast a guiding signal comprising location information of at least one of said target locations and of said target transmitter;
a plurality of tracking unit, each tracking unit comprising;
a data entry unit adapted to enter a target code entered by a user;
a receiver unit adapted to receive said guiding signals from said target transmitters and to determine if one of said plurality of guiding signals matches said target code;
a direction-finding unit adapted to determine bearing information of a target location, upon a match between said target code and one of said guiding signals, based on location information of said target location and of said transmitter;
a display unit adapted to graphically display the bearing of said target location.
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Specification