Combined global positioning system receiver and radio
First Claim
1. A portable communication and navigation unit comprising:
- a navigation receiver for receiving signals from a plurality of sources;
a computing device coupled with the navigation receiver for calculating a location of the communication and navigation unit as a function of the received signals;
voice communication equipment for permitting voice communications with another communication and navigation unit;
a radio receiver coupled with the computing device for receiving from the other unit a radio signal indicative of a location of the other unit and an identifier associated with the other unit;
a display coupled with the computing device for indicating the location of the other unit;
a radio transmitter coupled with the computing device for transmitting to the other unit a radio signal indicative of the location of the communication and navigation unit and an identifier associated with the communication and navigation unit;
a portable, handheld housing for housing the navigation receiver, the computing device, the voice communication equipment, the radio receiver, the display, and the transmitter; and
an input coupled with the processor for permitting a user to select the identifier associated with the communication and navigation unit and the identifier associated with the other unit.
0 Assignments
0 Petitions
Accused Products
Abstract
A portable GPS/radio unit communicates over a wireless radio network with at least one other unit which is transmitting radio signals over the network indicative of that unit'"'"'s location. The GPS/radio unit comprises a GPS receiver for receiving satellite signals from a plurality of satellites, a radio receiver for receiving the radio signals transmitted by the other unit, a processor for calculating the unit'"'"'s location as a function of the received satellite signals and for identifying the location of the other unit based on the received radio signals, and a display for indicating the location of the other unit. The display may indicate the respective locations of multiple units and may also display unique identifiers for each of the units. A system and method for indicating the location of one portable GPS/radio unit on the display of another portable GPS/radio unit involves at least two such units communicating with one another over a wireless radio network.
191 Citations
23 Claims
-
1. A portable communication and navigation unit comprising:
-
a navigation receiver for receiving signals from a plurality of sources;
a computing device coupled with the navigation receiver for calculating a location of the communication and navigation unit as a function of the received signals;
voice communication equipment for permitting voice communications with another communication and navigation unit;
a radio receiver coupled with the computing device for receiving from the other unit a radio signal indicative of a location of the other unit and an identifier associated with the other unit;
a display coupled with the computing device for indicating the location of the other unit;
a radio transmitter coupled with the computing device for transmitting to the other unit a radio signal indicative of the location of the communication and navigation unit and an identifier associated with the communication and navigation unit;
a portable, handheld housing for housing the navigation receiver, the computing device, the voice communication equipment, the radio receiver, the display, and the transmitter; and
an input coupled with the processor for permitting a user to select the identifier associated with the communication and navigation unit and the identifier associated with the other unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A method for displaying the location of a first portable communication and navigation unit on a second portable communication and navigation unit, the method comprising:
-
receiving a first set of signals from a plurality of sources at the first portable communication and navigation unit;
calculating a location of the first unit as a function of the first set of received signals;
receiving a second set of signals from a plurality of sources at the second portable communication and navigation unit;
calculating a location of the second unit as a function of the second set of received signals;
transmitting the location of the first unit to the second unit over a communications network in periodic bursts in association with a voice communication transmitted from the first unit to the second unit; and
displaying the location of the first unit on the second unit. - View Dependent Claims (19, 20, 21, 22)
-
-
23. A method for displaying the location of a first portable communication and navigation unit on a second portable communication and navigation unit, the method comprising:
-
receiving a first set of signals from a plurality of sources at the first portable communication and navigation unit;
calculating a location of the first unit as a function of the first set of received signals;
receiving a second set of signals from a plurality of sources at the second portable communication and navigation unit;
calculating a location of the second unit as a function of the second set of received signals;
transmitting the location of the first unit to the second unit over a communications network in association with a voice communication transmitted from the first unit to the second unit, wherein the location data is transmitted on a pseudo-random basis so as to decrease the likelihood of data collisions; and
displaying the location of the first unit on the second unit.
-
Specification