Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
219 words
An integrated radio communications and location system comprising: an antenna system (12, 18) for receiving radio frequency signals; a telephony receiver (16) coupled to the antenna system for transceiving telephony radio signals, for example terrestrial cellular telephony, personal communications service or mobile satellite telephony signals; a location system receiver (10) coupled to the antenna system (12, 18) for receiving location system radio signals, for example GPS, GLONASS, LORAN, and GEOSTAR signals; a controller (14), operated in accordance with a control program, coupled to the telephony receiver for controlling the operation of the telephony receiver in accordance with the control program and coupled to the location system receiver for controlling the operation of the location system receiver; a digital signal processor (14) coupled to the controller for processing the telephony radio signals and for processing the received location system radio signals and generating a signal indicative of the location of the integrated system in response thereto; the controller also being coupled to the digital signal processor for receiving the signal indicative of the location of the integrated system and generating a location signal in response thereto, for example, the latitude, longitude and altitude of the integrated system; and a display (20) coupled to the controller for displaying information based on the location signal and information regarding the telephony radio signals.
Claim 2
Dependent Claim
24 words
The system of Claim 1 wherein the location system receiver (10) performs demodulation, sampling, despreading and time measurements on the location system radio signals.
Claim 3
Independent Claim
37 words
The system of any one or more of the preceding claims wherein the digital signal processor (14) performs position determination algorithms, location updates and location corrections using the location system radio signals from the location system receiver.
Claim 4
Independent Claim
46 words
The system of any one or more of the preceding claims wherein the transmission of the location signal is performed in response to a query received by the telephony receiver (16) and conveyed to the controller (14) from the remote location (54) during a telephone call.
Claim 5
Independent Claim
109 words
The system of any one or more of the preceding claims wherein the telephony receiver (16) further comprises: a receive channel (58), coupled to the antenna system, for demodulating an incoming portion of the radio telephony signal and generating an incoming intermediate signal in response thereto; a transmit channel (64), coupled to the antenna, for modulating an outgoing intermediate signal and for generating an outgoing portion of the radio telephony signal in response thereto; and wherein the digital signal processor (14) further comprises: means for encoding an outgoing voice signal and generating the outgoing intermediate signal; means for decoding the incoming intermediate signal and generating an incoming voice signal.
Claim 6
Independent Claim
47 words
The system of any one or more of the preceding claims further comprising an interface circuit (62), between the digital signal processor (14) and the receive and transmit channels (58, 64), for performing error correction and timing synchronization for incoming intermediate frequency signals and outgoing intermediate signals.
Claim 7
Independent Claim
23 words
The system of any one or more of the preceding claims wherein the controller (14) further performs, message processing, call processing and authentication.
Claim 8
Independent Claim
38 words
The system of any one or more of the preceding claims wherein the controller (14) is coupled to at least one oscillator (60) in the telephony receiver (16) and further controls the timing and frequency of the oscillator.
Claim 9
Independent Claim
59 words
The system of any one or more of the preceding claims wherein the controller (14) further comprises means for generating a display signal in response to the determining of the approximate location; and wherein the system further comprises a display device (20) coupled to the controller for displaying information in response to the display signal indicating the approximate location.
Claim 10
Dependent Claim
21 words
The system of Claim 9 further comprising: a switch (49) for selectively activating the display device to display the location information.