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6999731 Control of an alert mechanism by communication of an event-associated command  
A method and apparatus for associating a command with an event at a first device, communicating the command to a second device when the event occurs and causing an action at the second device...
EP0865707B1 IMPROVED MESSAGE PROCESSING IN TWO-WAY DATA DEVICES  
Abstract not available for EP0865707 Abstract of corresponding document: US6154147 In a technique for reducing duplicate messages in a two way data device, a determination (30) is made as to...
6421357 High-penetration radiocommunication system using a compact character set  
A high-penetration transmission method uses a compact character set for encoding an alphanumeric message, in which the signal margin is increased by a combination of bit repetition and a relatively...
EP0597064B1 DATA COMMUNICATION RECEIVER HAVING VARIABLE LENGTH MESSAGE CARRY-ON  
Abstract not available for EP0597064 Abstract of corresponding document: WO9324909 A data communication receiver (106) is assigned for receiving message signals within one or more message...
6154147 Message processing in two-way data devices  
In a technique for reducing duplicate messages in a two way data device, a determination (30) is made as to whether a first signature of a new message is the same as a second signature of a...
6085069 Message transmission system, a method of operating the message transmission system, and a primary station therefor  
A message transmission system, such as a paging system, provides message compression through the use of corresponding memories or memory areas in a primary station and a secondary station storing...
6028513 Wireless activation of multiple alarm devices upon triggering of a single device  
A method and apparatus for use in wireless alarm systems is provided which enable the simultaneous sounding of any or all alarm devices in the system upon sensing of an alarm condition by at least...
6005885 Methodology for discontinuous radio reception utilizing embedded frame length words  
A radio receiver for direct sequence spread spectrum radio frequency (RF) signals is provided which discontinues radio reception when it is recognized that a received signal is intended for another...
5892966 Processor complex for executing multimedia functions  
A computer processor complex including a hardware processor coupled to a multimedia coprocessor is provided. This computer processor complex is capable of separately processing a stream of...
5887243 Signal processing apparatus and methods  
A unified system of programing communication. The system encompasses the prior art (television, radio, broadcast hardcopy, computer communications, etc.) and new user specific mass media. Within...
EP0618743B1 Time division multiplexed communication method and system for increasing the number of individual receivers than can be served  
Abstract not available for EP0618743
5726643 Radio paging receiver capable of displaying a predetermined message  
In a radio paging receiver, a CPU selects (SA3) from call signals a specific call signal specific to the receiver and from message signals a specific message signal that follows the specific call...
5682148 Paging system with message numbering prior to transmission  
A paging system repeatedly broadcast each message and associates a sequential message number with each paging message. The message number in each message serves two functions. First, the message...
5630224 Method and apparatus for avoiding desensitization of a radio frequency receiver  
A subscriber terminal (104) operable in a wireless communications system (100) having an infrastructure (111) and arranged and constructed to provide data communications between the infrastructure...
5617083 Data communication receiver having variable length message carry-on  
A data communication receiver (106) is assigned for receiving message signals within one or more message transmission frames (FIG. 3) transmitted in a predetermined sequence. The message signals...
EP0507843B1 PAGING SYSTEM EMPLOYING DESIGNATED FRAME COMMENCING INFORMATION SERVICE DATA MESSAGE TRANSMISSION  
Abstract not available for EP0507843 Abstract of corresponding document: US5010330 A paging system which provides both individual and information services includes a transmitter which transmits...
5581246 Multiple device control system  
A train communication and control system is described having the cars of the train connected by a two-wire train line running continuously from car to car. Each car has a transmitting circuit and a...
5546077 Remotely programmable pager  
A method and apparatus for secure, remote programming of a receiving device by instructions transmitted in data format, whereby previously stored messages may be selectively updated, capcodes may...
5537099 Receiving port security in a network concentrator  
A method and apparatus for preventing intrusive access to a network. The method and apparatus are implemented in a network having a star topology. Utilizing a network management module of a network...
5508690 Programmable data alarm  
A programmable data alarm containing a dedicated microprocessor serially interfaced with a data communications network is configured to monitor the network's data transmission lines for...
EP0325839B1 Method and apparatus for transmitting data packets from a plurality of stations in a time division multiplexed communication system  
Abstract of EP0325839 Improved time-division multiplexed communication methods for a wide area paging system. One method appends check bits of a correction code to each data word and interleaves...
5499021 Paging receiver with a display function that inhibits display of a received command signal  
A paging receiver with a display function allows a conventional message to be displayed and a receiver control signal to be sent together in a single message format. A first and a second...
EP0415979B1 COMMUNICATION SYSTEM HAVING A PACKET STRUCTURE FIELD  
Abstract not available for EP0415979 Abstract of corresponding document: US4860003 A communication system develops an information packet having a packet structure field and at least one message....
5414419 Battery saving method for selective call receivers  
A method is provided for signalling wherein one or more of a group of selective call receivers periodically synchronize to a portion of a received signal and determine whether an indicator...
5369783 Dynamic regrouping in a trunked radio communications systems  
In a trunked radio frequency communications system, a dynamic regrouping scheme includes an effective user interface, automatic support of multi-site systems, the capability to program individual...
5363090 Method and apparatus for combining submessages of a message to form the complete message  
A method in a radio communication device (110) for receiving a lengthy message comprises the steps of receiving an RF signal (300) comprising header information (310) and submessages (305), wherein...
EP0618743A2 Watch pager system and communication protocol.  
Abstract not available for EP0618743
EP0618742A2 Watch pager system and communication protocol.  
Improved time-division multiplexed communication methods for a wide area paging system. One method appends check bits of a correction code to each data word and interleaves the words on...
5309153 Adaptive on-off control for radio receiver  
A paging system using synchronized transmission protocol and pagers active during monitor intervals to receive data transmitted during corresponding message intervals is provided with adaptive...
5289178 Sensitivity indicator for a radio receiver and method therefor  
This invention provides an indication of quality of signal reception in a selection call system such as a paging system, by comparing received data with preprogrammed data and indicating the degree...
5272475 Alerting system for a communication receiver  
An alerting system for a selective call communication receiver (10) which includes a battery (26A, 26B) for supplying energy at a first supply rate and a receiver (14) coupled thereto for receiving...
5247700 Cellular telephone with pager  
A compact and unitary cellular/pager. The cellular/pager includes a cellular antenna for receiving UHF cellular and paging signals. The cellular/pager also includes a VHF paging antenna. Every...
5241305 Paper multi-level group messaging with group parsing by message  
A pager based information system (2) is used to transmit both conventional individual and group messages (using pager capcodes (76) for pager identification) and three types of unconventional...
5225826 Variable status receiver  
A selective call receiver, such as a pager, has a real-time clock and is capable of determining the response of the receiver to a message in accordance with a status associated with that message....
EP0177971B1 Pager receiver capable of controlling an internal state by a call signal  
Abstract not available for EP0177971 Abstract of corresponding document: US4839641 In a pager receiver operable in response to a call signal comprising a first part including a call number signal,...
5168271 Paging and time keeping system with transmission of time slot identification used for synchronization  
A wide area paging system is disclosed in which paging messages input to the system in one local area can be broadcast to a receiver in any other local area without necessarily broadcasting the...
5155479 Radio receiver with adaptive on-off control  
A paging system using synchronized transmission protocol and remote pagers active during monitor intervals to receive data transmitted during corresponding message intervals is provided with...
5151693 Wireless signal transmission system with random access  
A central station generates and transmitted data of a transmission format. The transmission format includes an I/B bit indicating permission or inhibition of a new transmission of a next...
5150954 Pager watch system utilizing time slot communication  
A method and apparatus for transmitting paging and absolute time information to, and receiving such information at, a remote portable electronic timepiece and pager unit during a short time slot...
5140419 Communications system  
A communications system having centralized management and multiply-hierarchical addressing schemes is disclosed. The system may be used in connection with supplying video, audio and data such as...
5122795 Scanning receiver for nationwide radio paging system  
A scanning radio reciever for a wide area paging system which interconnects conventional radio common carriers (RCC) for broadcasting page information. A plurality of RCC's in each geographical...
5121430 Storm alert for emergencies  
A geographically specific emergency alert system includes a code generator unit in which geographic areas to be alerted and types of severity of alerts are selected and code strings generated to...
5030948 Multiple characteristic sensitive addressing schema for a multiple receiver data processing network  
A data transmission network enables address encoded messages to be transmitted via a radio wave type communications medium to multiple receivers, each of which is assigned a multiple byte address...
5010330 Paging system employing designated frame commencing information service data message transmission  
A paging system which provides both individual and information services includes a transmitter which transmits page call address and data periodically in batches to subscribing paging receivers....
4978944 Paging receiver with dynamically programmable channel frequencies  
A paging receiver is disclosed which is compatible with transmissions from analog or digital paging transmitters. The paging receiver has a command structure which permits it to be dynamically...
4959644 Paging receiver with a display function that inhibits display of a received command signal  
A paging receiver with a display function allows a conventional message to be displayed and a receiver control signal to be sent together in a single message format. A first and a second...
4956641 Radio paging device having circuitry of rewriting a stored message with error-free characters  
In a radio display pager, each character of a received multi-character message is checked for error. A first message arrival or a first receive message is stored in a temporary memory and...
4952929 Selective call receiving system  
A selective call radio receiving system includes first and second receiving means (10 and 10') each having a memory (20 and 20') therein. Paging messages are received by both the first and second...
4935732 Paging receiver with programmable areas of reception  
A paging receiver is disclosed which is compatible with transmissions from analog or digital paging transmitters. The paging receiver has a command structure which permits it to be dynamically...
4916539 Communications system having receivers which can be addressed in selected classes  
A communications system having programmable, addressable receivers that receive, store, process and send digital and conventional video, audio and control signals for use in, among other things, a...
Matches 1 - 50 out of 75 1 2 >