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Match Document Document Title
7411936 Wireless communication method and apparatus  
A method for establishing communications between a master unit and a plurality of node units. Of the plurality of node units, K node units are assumed to have established communications with a...
7245596 Modularly clustered radiotelephone system  
A subscriber cluster unit for a wireless telecommunication system provides a wireless interface with a base station for a plurality of subscriber units. The cluster unit has a plurality of...
7058067 Distributed interactive multimedia system architecture  
Various aspects of an interactive multimedia system and associated methods. In general, the multimedia system employs central and peripheral hubs that function to provide services to a plurality of...
6954470 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A system and method for wireless communication between a plurality of subscriber units and a base station, the base station communicating information signals from an originating source to a...
6842440 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A system and method for wireless communication between a plurality of subscriber units and a base station, the base station communicating information signals from an originating source to a...
6771667 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A subscriber unit synchronizes to a control channel. An assigned frequency and time slot is transmitted on the control channel to the subscriber unit. The subscriber unit is moved from the control...
6674763 Method and system of seizing communication channel enhancing usability of remaining communication channels  
A method and a system for seizing at least one communication channel for use in a first call. Information on a plurality of states of a plurality of communication channels are held in an...
6516264 Control apparatus for drive system  
A drive system composed of an engine and a transmission is controlled in accordance with a desired wheel toque corresponding to a position of an accelerator, and a present vehicle speed in such a...
6496488 Modularly clustered radiotelephone system  
A power-conserving time division multiple access (TDMA) radio telephone system is disclosed in which a cluster of subscriber stations, remote from a base station, employs a common pool of...
6459690 Channel selector device for multiple access direct transmission systems between mobile stations  
A channel selector device for a multiple access system of direct transmission between mobile stations carries out measurements on various channels during calls in order to determine if there is a...
6393002 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A digital telephone system for processing a plurality of information signals received in parallel over telephone lines from a public network exchange which are then transmitted in parallel over a...
6304576 Distributed interactive multimedia system architecture  
Various aspects of an interactive multimedia system and associated methods. In general, the multimedia system employs central and peripheral hubs that function to provide services to a plurality of...
6298300 Control apparatus for drive system composed of engine and transmission  
A drive system composed of an engine and a transmission is controlled in accordance with a desired wheel toque corresponding to a position of an accelerator, and a present vehicle speed in such a...
6282180 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A telecommunication system for processing a plurality of simultaneous bidirectional communications includes a primary station and at least one secondary station using wireless transmissions over...
6208630 Modulary clustered radiotelephone system  
A power-conserving time division multiple access (TDMA) radio telephone system is disclosed in which a cluster of subscriber stations, remote from a base station, employs a common pool of...
6058348 Control apparatus for drive system composed of engine and transmission  
A drive system composed of an engine and a transmission is controlled in accordance with a desired wheel toque corresponding to a position of an accelerator, and a present vehicle speed in such a...
6014374 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A telecommunication system for processing a plurality of simultaneous bidirectional communications includes a primary station and at least one secondary station using wireless transmissions over...
5852604 Modularly clustered radiotelephone system  
A power-conserving time division multiple access (TDMA) radio telephone system is disclosed in which a cluster of subscriber stations, remote from a base station, employs a common pool of...
5734678 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A terrestrial Rf telephone system provides a plurality of voice signal channels on a plurality of forward direction carrier frequencies, each carrier frequency having an associated predetermined...
5657358 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or plurality of RF channels  
A toll quality terrestrial wireless digital multiple access terrestrial communication system is disclosed having a base station in communication with telephone lines and with mobile subscriber...
5133080 Repeater for a controlled radio system  
A repeater (30) is provided for relaying communication between a subscriber unit (24) and a central station (10) when the repeater recognizes transmission from the subscriber unit to the central...
EP0493910A2 Method of and apparatus for detecting wheel spin.  
In a vehicle having driven and undriven wheels (3, 4), the wheel speeds are measured (5, 10) and the lowest undriven wheel speed determined (7, 11-13). The driven wheel speeds are compared (7,...
5119375 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A system and method for the wireless transmission of information signals between a base station and a plurality of subscriber stations. The method may include a base station receiving an...
5088094 Accessing of transmission channels of a communication system  
In a communications system with a plurality of subscriber stations independent from each other, where each subscriber station can access according to a multiple access method a joint duplex...
5022024 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A system for the wireless transmission of multiple information signals utilizing digital time division circuits between a base station and a plurality of subscriber stations. The subscriber...
4993059 Alarm system utilizing wireless communication path  
An alarm system for a protected premises includes an alarm sensor for generating an alarm signal in the event of an alarm condition. A cellular-type radio/telephone transceiver is located at the...
RE32856 Alarm system  
An alarm system is provided in which an alarm condition causes a cellular transceiver automatically to transmit a telephone call to an alarm monitoring station by over-the-air transmission of a...
4792984 Radio channel control method for mobile communication system  
A radio channel control method for a narrow-zone mobile communication system in which a plurality of base stations share a plurality of channels and each selects any of the channels for setting up...
4722083 Satellite telecommunications system featuring multi-beam coverage and dynamically controlled allocation of the satellite transmission capacity  
The invention relates to a satellite telecommunications system featuring multi-beam coverage and dynamically controlled allocation of the satellite transmission capacity, of the type where a number...
4682367 Mobile radio communications system with join feature  
Cooperation between two repeater transceivers of a radio trunking system causes a mobile radio transceiver to join or rejoin ongoing communications. To join ongoing communications, a radio...
4658435 Radio trunking system with transceivers and repeaters using special channel acquisition protocol  
An arrangement for establishing communication between a first mobile radio transceiver and a second mobile radio transceiver through a repeater over a radio frequency channel selected from a...
4649567 Dispatch overdialing for inter-group and other added calling/called access to communications channels in a trunked radio communications system  
"Dispatch overdialing" permits radio transceivers already communicating via a repeater with other transceivers in a trunked radio communications system to call additional radio transceivers onto...
4628537 System for identifying a responding station for a radio communications system  
A communications system for identifying a responding station called by a communications system caller station over a call channel and a plurality of speech channels. The system transmits...
4597104 Selective call signal detection circuit for multi-channel access type radio receiving station  
A selective call signal detection circuit comprises a channel free/busy state detection circuit for scanning a plurality of communication channels to determine their respective free/busy states, a...
4577182 Alarm system  
An alarm system is provided in which an alarm condition causes a cellular transceiver automatically to transmit a telephone call to an alarm monitoring station by over-the-air transmission of a...
4534061 Deterministic multi-access method for a decentralized mobile radio system  
A mobile radio system uses a predetermined number of control channels over which a hand-shake routine is performed to determine called station availability, before one of a limited number of talk...
4425664 Multiport programmable digital data set  
Disclosed is a programmable universal data set which is defined as a data set that is capable of simultaneously servicing a plurality of data terminals desiring diverse types of data sets for...
4409687 Arrangement and method for establishing radio communication in a system  
Communication between a first radio transmitter and receiver and a second radio transmitter and receiver is provided by a system repeater. An arrangement for each radio transmitter and receiver in...
EP0089473A2 Radio telephone system.  
A radio telephone system having a plurality of stationary (13 to 16) and a plurality of mobile transmitting/receiving stations (11) is proposed in which the stationary stations (13 to 16) are...
4352180 Digital time-division multiplex telecommunication system  
A digital time-division multiplex telecommunication system of flexible network configuration, including line, branch, ring, and star networks. Decentralized control of channel assignment is...
4347607 Voice alarm signalling system  
Voice and alarm signalling capability between supervisory personnel at monitor and control sites located at separated transceiver facilities of a (repeatered) multichannel communication network is...
4317962 Distributed control for digital switching system  
A uniformly manufacturable solid state modular distributed control for a digitally switched local or central office servicing an expandable number of subscribers is disclosed in which subscriber...
4281413 Multichannel radio telephone system  
Phantom signals resulting from intermodulation between a busy channel and an idle channel with idle tone cause scanning radio stations to lock on a phantom idle channel and miss communications....
4199661 Method and apparatus for eliminating conflicts on a communication channel  
A method and apparatus is provided for eliminating conflicts on a communication channel, and particularly on a shared communication channel having a plurality of active stations, each capable of...
4145657 Radio transmission system for two subscribers to have a mutual connection on one of several frequency channels and having time multiplex interlace of preferred channels  
A radio transmission system in which two subscribers use only one of possibly several frequency channels for a mutual connection is characterized in that in the individual frequency channel which...
4103106 Mobile radiotelephone apparatus and method  
Mobile radiotelephone apparatus including channel finding means for locating an available channel for placing a call from the mobile unit. The channel finding means may have means for cyclically...
4090036 Satellite communications system  
A satellite communications system provides automatic channel assignment without employing a dedicated signalling channel. A major station detects carrier-free forward channels and transmits on each...
3986120 Telephone system comprising a satellite  
The invention relates to a telephone system comprising: a satellite arranged to relay a plurality of signalling channels and speech transmission channels; a plurality of earth stations having a...
3919485 Circuit arrangement for centrally controlled telephone exchange installations having carrier frequency devices  
A circuit arrangement for centrally controlled telephone exchange installations having carrier frequency channels is described. The centrally controlled exchange has multiple stage switching...
3894194 Automatic mobile radio telephone system  
In a multi-channel radio telephone system, each mobile station is assigned a home channel for receiving calls but can initiate calls on any idle channel. Communication is normally in a duplex mode...
Matches 1 - 50 out of 53 1 2 >