COMBINED GLOBAL POSITIONING SYSTEM RECEIVER AND RADIO
First Claim
1. A portable GPS/radio unit capable of communicating with at least one other portable GPS/radio unit over a wireless radio network, the GPS/radio unit comprising:
- a GPS receiver for receiving satellite signals from a plurality of satellites;
a processor coupled with the GPS receiver for calculating a location of the GPS/radio unit as a function of the satellite signals;
a radio transceiver coupled with the processor and operable for—
transmitting voice communications to and receiving voice communications from the other GPS/radio unit, andtransmitting a radio signal to the other GPS/radio unit indicative of the location of the GPS/radio unit and receiving from the other GPS/radio unit a radio signal indicative of a location of the other GPS/radio unit; and
a push-to-talk button coupled with the radio transceiver and the processor for initiating transmission of both the voice communications and the radio signal indicative of the location of the GPS/radio unit,wherein the radio signal indicative of the location of the GPS/radio unit is transmitted after the push-to-talk button has been pushed and released so that the radio signal indicative of the location of the GPS/radio unit is transmitted after transmission of the voice communications.
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Accused Products
Abstract
A portable GPS/radio unit (10) communicates over a wireless radio network (12) with at least one other such unit. The unit (10) may transmit radio signals over the network (12) indicative of the unit'"'"'s location. The unit (10) includes a single, push-to-talk button (38) that may be pressed to both transmit a voice communication and to initiate transmission of location data. The unit (10) also includes a “polling” function that requests location data from other units, an auxiliary coding system that codes or encrypts all transmitted data, and an emergency message feature that facilities the transmission and receipt of emergency messages.
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Citations
9 Claims
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1. A portable GPS/radio unit capable of communicating with at least one other portable GPS/radio unit over a wireless radio network, the GPS/radio unit comprising:
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a GPS receiver for receiving satellite signals from a plurality of satellites; a processor coupled with the GPS receiver for calculating a location of the GPS/radio unit as a function of the satellite signals; a radio transceiver coupled with the processor and operable for— transmitting voice communications to and receiving voice communications from the other GPS/radio unit, and transmitting a radio signal to the other GPS/radio unit indicative of the location of the GPS/radio unit and receiving from the other GPS/radio unit a radio signal indicative of a location of the other GPS/radio unit; and a push-to-talk button coupled with the radio transceiver and the processor for initiating transmission of both the voice communications and the radio signal indicative of the location of the GPS/radio unit, wherein the radio signal indicative of the location of the GPS/radio unit is transmitted after the push-to-talk button has been pushed and released so that the radio signal indicative of the location of the GPS/radio unit is transmitted after transmission of the voice communications. - View Dependent Claims (2, 3, 4)
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5. A method comprising:
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receiving at a portable GPS/radio unit satellite signals from a plurality of satellites; calculating a location of the portable GPS/radio unit as a function of the satellite signals; and transmitting from the portable GPS/radio unit both a voice communication and a radio signal indicative of the location of the portable GPS/radio unit when a push-to-talk button on the portable GPS/radio unit is actuated, wherein the radio signal indicative of the location of the portable GPS/radio unit is transmitted after the push-to-talk button has been pushed and released so that the radio signal indicative of the location of the portable GPS/radio unit is transmitted after transmission of the voice communication. - View Dependent Claims (6, 7, 8)
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9. A portable GPS/radio unit capable of communicating with at least one other portable GPS/radio unit over a wireless radio network, the GPS/radio unit comprising:
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a housing; a GPS receiver positioned in the housing for receiving satellite signals from a plurality of satellites; a GPS antenna coupled with the GPS receiver and extending substantially upward from the housing; a processor positioned in the housing and coupled with the GPS receiver for calculating a location of the GPS/radio unit as a function of the satellite signals; a radio transceiver positioned in the housing and coupled with the processor and operable for—
transmitting voice communications to and receiving voice communications from the other GPS/radio unit, andtransmitting a radio signal to the other GPS/radio unit indicative of the location of the GPS/radio unit and receiving from the other GPS/radio unit a radio signal indicative of a location of the other GPS/radio unit; a radio antenna coupled with the radio transceiver and extending substantially upward from the housing; and a push-to-talk button positioned on the housing and coupled with the radio transceiver and the processor for initiating transmission of both the voice communications and the radio signal indicative of the location of the GPS/radio unit, wherein the radio signal indicative of the location of the GPS/radio unit is transmitted after the push-to-talk button has been pushed and released so that the radio signal indicative of the location of the GPS/radio unit is transmitted after transmission of the voice communications.
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Specification