Matches 1 - 40 out of 40
Match Document Document Title
7352994 Method, system and recording medium using a relay device for detecting and inhibiting communication  
A relay device includes a first signal reception unit receiving a signal from the outside, a first radio communication unit transmitting the signal by radio that is received by the first signal...
7271737 Mobile communication device  
A mobile communications device comprising a location sensing system, producing a location output; a memory, storing a set of locations and associated events; a telecommunications device,...
7268700 Mobile communication device  
A mobile communications device comprising a location sensing system, producing a location output; a memory, storing a set of locations and associated events: a telecommunications device,...
7065364 Method and apparatus for wireless communication  
A method of transmitting wireless messages in a communications system ( 201 ) having a plurality of transceiver units ( 203 ) for receiving and onwardly transmitting wireless messages is disclosed....
6889032 Mobile base station for disseminating information  
A device for implementing a multimedia communication dissemination system is disclosed herein. The communication system integrates heterogeneous satellite transmission systems, local area computer...
6813505 Efficient and flexible communication device and system with base-to-base communication  
A communication device that includes a base. The base includes a line interface for receiving incoming communications over a network line and sending outgoing communications over the network line,...
EP1201055B1 METHOD AND APPARATUS FOR WIRELESS COMMUNICATION  
Abstract not available for EP1201055
6647244 Wireless vehicular repeater system  
A wireless communications system has a plurality of base stations 1 , a plurality of mobile vehicular repeater units 2 , and a plurality of portable units 3 . In a public safety network context,...
5970406 Translator for time division multiple access wireless system having selective diversity circuits  
In this approach to implementing a wireless communication system, in band translator components are located in the center of remote cells which would normally contain a base transceiver system...
5907794 Controlling a subscriber station on a direct mode channel  
The present invention relates to a method and radio system for controlling a subscriber station (MS1) operating on a direct mode channel in a radio system, said radio system comprising a radio...
5901342 Establishment of a call in a mobile communication system  
The invention relates to a method of establishing a call in a mobile communications system and to a mobile communication system comprising at least one base station, mobile stations communicating...
5710764 Method of signal transmission in a mobile communication system  
A method of signal transmission between radio base stations (BSs) in a mobile communication system by using only one transmission system commonly used for both of communication with the exchange...
5559795 Method in a TDMA radiosystem to let a central station communicate with both peripheral stations and other central stations  
Method in a digital wide area system operating in time division and comprising two or several subsystems, each of which comprises at least one central station (CS) and one or several peripheral...
5371901 Remote voice control system  
A portable communication device (10) is controlled by voice recognition circuitry (20) remote from the portable communication device. The portable communication device includes apparatus for...
EP0280543B1 Paging system  
Abstract of EP0280543 A paging system allows an on-board radio unit (14) of a vehicle telephone for business use to serve as a repeater as needed. An on-board repeater (16) is mounted on the same...
5239666 Mobile detector using RSSI for vehicular repeater prioritization  
A communication system (10) comprises a portable radio (20) and a plurality of mobile repeaters (12), a mobile repeater system 200 comprising a portable signal receiver (224) for receiving portable...
4979231 Two-way radio for use in a communication system  
A two-way radio includes a receiver having a squelch circuit and a selective calling decoder. A transmitter is connected to an inhibit circuit. The inhibit circuit is responsive to the selective...
4882765 Data transmission system  
Data is transmitted from a mobile or a base station to a booster or repeater station which, if it identifies that the same message has been retransmitted a preset number of times by the mobile or...
EP0280543A2 Paging system.  
A paging system allows an on-board radio unit (14) of a vehicle telephone for business use to serve as a repeater as needed. An on-board repeater (16) is mounted on the same vehicle as the on-board...
4635285 Communication system with voice priority for remote stations  
A two-way radio communications system of the simplex or half-duplex type having a communication link to a duplex telephone system is provided wherein the simplex or half duplex mobile radio is...
4607389 Communication system for transmitting an electrical signal  
The present invention is a communication system for transmitting an electrical signal from a transmission tower and includes a first transceiver located adjacent the base of the tower and which is...
4573207 Queued community repeater communications system  
A communication system which controls access to a single communications channel by a plurality of remote units arranged in predetermined groups is disclosed. Assignment of the channel is controlled...
4554677 Queued community repeater controller  
A communications system central controller which regulates the access of a plurality of remote units to a single communications channel is disclosed. The central controller establishes a period of...
4553263 Queued community repeater mobile  
A remote unit which transmits and receives messages within a fleet of remote units on a single communications channel shared by a plurality of remote unit fleets is disclosed. Access to the channel...
4553262 Communications system enabling radio link access for non-trunked radio units to a multifrequency trunked two-way communications systems  
An improved multifrequency trunked, two-way communications system is provided in which a plurality of conventional single channel radio units are provided access. The system includes a...
4479245 Same frequency repeater for a multiple repeater system  
This invention is directed to a same frequency repeater (SFR) for use in a multiple SFR system in which only one SFR at a given time is allowed to retransmit a received signal thereby preventing...
4380761 Digital phase decoder with collision detection  
A data communication system includes a communicating medium and a plurality of transceivers connected to the medium, each including a transmitter for transmitting phase-encoded data onto the medium...
4317218 Arrangement for remote control of repeater stations  
A control arrangement for a radio communication system in which mobile users communicate with one another and with a central dispatcher via repeaters. In a first embodiment, the repeater station...
4291411 Remote control for radiotelephones  
A radiotelephone system having a control transmitter unit which includes a control unit having operating keys, a channel indicator device, a function indicator device and a loudspeaker/microphone...
4284848 Switched network telephone subscriber distribution system  
A network of telephone subscribers, located remote from the primary telephone system, includes subscriber stations having two frequency-agile, multi-channel duplex transceivers for communicating...
4282512 Data communication system  
A data communication system includes a communicating medium and a plurality of transceivers connected to the medium, each including a transmitter for transmitting phase-encoded data onto the medium...
EP0014750A1 System with several radiotelephones for changing over from "alternating duplex communication" to "two-way speech communication".  
A radio telephony system which comprises a relay station (11) and several radio telephones (10, 12). The radio telephones (10, 12) can be switched to the "alternating duplex" or "simplex" mode....
4083003 Vehicle location system  
A vehicle location system having a plurality of stationary wayside stations positioned at predetermined geographical locations. The passage of a vehicle near a station references the location of...
4063220 Multipoint data communication system with collision detection  
Apparatus for enabling communications between two or more data processing stations comprising a communication cable arranged in branched segments including taps distributed thereover. Tied to each...
4056780 Vehicle repeater prioritization system  
An improved repeater adds on to each mobile transceiver of a radio wave communication system for selectively controlling rebroadcasts to an associated portable station. Novel circuitry within each...
4056779 Vehicular repeater  
In a two-way communications system involving portable-mobile-base station transmission, a priortization method prevents interference caused by more than one mobile repeater at a single location...
3962638 Data transmission over voice bandwidth of FM radio channel  
A low cost data transmission method and system for transmitting digital control instructions from a central control or data processing location to equipment operated in some remote area and for...
3955140 Mobile radio extension unit with punch through operation  
A mobile radio extension unit for converting a conventional mobile transceiver having a transmitter and a receiver to use as a repeater or transponder for establishing a bidirectional...
3914692 Emergency communication system  
The specification discloses an emergency communication system which includes a portable unit for being carried by a wearer. The portable unit includes a radio transmitter and receiver and is...
3906166 Radio telephone system  
A portable duplex radio telephone system includes at least one base station transmitter having a predetermined base transmission range, and a plurality of portable or mobile units each having a...
Matches 1 - 40 out of 40