Combined global positioning system receiver and radio
First Claim
1. A system in which a plurality of portable navigation units wirelessly communicate with one another, the system comprising:
- a first portable navigation unit having a navigation receiver for receiving signals from a plurality of sources, a processor coupled with the navigation receiver for calculating a location of the first unit as a function of the received signals, a radio transmitter coupled with the processor for transmitting a radio signal including information indicative of the location of the first unit, a radio receiver, a microphone, a speaker, and a display; and
a second portable navigation unit having a navigation receiver for receiving signals from a plurality of sources, a processor coupled with the navigation receiver for calculating a location of the second unit as a function of the received signals, a radio receiver coupled with the processor for receiving the radio signal from the first unit, a display coupled with the processor, a microphone and a speaker for permitting voice communications with the first unit, and a radio transmitter coupled with the processor for transmitting a radio signal including information indicative of the location of the second unit;
wherein the processor of the second unit is operable to transmit to the first unit location information indicative of a previous location of the second unit.
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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.
208 Citations
20 Claims
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1. A system in which a plurality of portable navigation units wirelessly communicate with one another, the system comprising:
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a first portable navigation unit having a navigation receiver for receiving signals from a plurality of sources, a processor coupled with the navigation receiver for calculating a location of the first unit as a function of the received signals, a radio transmitter coupled with the processor for transmitting a radio signal including information indicative of the location of the first unit, a radio receiver, a microphone, a speaker, and a display; and a second portable navigation unit having a navigation receiver for receiving signals from a plurality of sources, a processor coupled with the navigation receiver for calculating a location of the second unit as a function of the received signals, a radio receiver coupled with the processor for receiving the radio signal from the first unit, a display coupled with the processor, a microphone and a speaker for permitting voice communications with the first unit, and a radio transmitter coupled with the processor for transmitting a radio signal including information indicative of the location of the second unit; wherein the processor of the second unit is operable to transmit to the first unit location information indicative of a previous location of the second unit. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12)
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2. A system in which a plurality of portable navigation units wirelessly communicate with one another, the system comprising:
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a first portable navigation unit having a navigation receiver for receiving signals from a plurality of sources, a processor coupled with the navigation receiver for calculating a location of the first unit as a function of the received signals, a radio transmitter coupled with the processor for transmitting a radio signal including information indicative of the location of the first unit, a radio receiver, a microphone, a speaker, and a display coupled with the processor; a second portable navigation unit having a navigation receiver for receiving signals from a plurality of sources, a processor coupled with the navigation receiver for calculating a location of the second unit as a function of the received signals, a radio receiver coupled with the processor for receiving the radio signal from the first unit, a display coupled with the processor, a microphone and a speaker for permitting voice communications with the first unit, and a radio transmitter coupled with the processor for transmitting a radio signal including information indicative of the location of the second unit; and a third portable navigation unit having a navigation receiver for receiving signals from a plurality of sources, a processor coupled with the navigation receiver for calculating a location of the third unit as a function of the received signals, a radio receiver coupled with the processor for receiving the radio signal of at least one of the first and second units, a display coupled with the processor, a microphone and a speaker for permitting voice communications with at least one of the first and second units, and a radio transmitter coupled with the processor for transmitting a radio signal including information indicative of the location of at least one of the first, second, and third units; wherein the second unit is operable to receive the location information indicative of the location of the first unit and transmit such information to the third unit. - View Dependent Claims (13, 14, 15, 16, 17)
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3. A first portable communication and navigation unit comprising:
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a navigation receiver for receiving signals from a plurality of sources; a computing device coupled with the navigation receiver for calculating a first location of the first communication and navigation unit as a function of the received signals; voice communication equipment for permitting voice communications with a second communication and navigation unit; a radio receiver coupled with the computing device for receiving from the second unit a radio signal indicative of a location of the second unit; a memory for storing historical location information of both the first and second units; a display coupled with the computing device for indicating the location of at least one of the first and second units; a radio transmitter coupled with the computing device for transmitting to the second unit a radio signal indicative of the first location of the first communication and navigation unit; and a portable, handheld housing for housing the navigation receiver, the computing device, the voice communication equipment, the radio receiver, the display, and the transmitter; wherein the first unit is operable to store in the memory the first location of the first unit such that when the first unit is at a second location, the first unit is operable to transmit the first location to the second unit. - View Dependent Claims (18, 19, 20)
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Specification