Matches 151 - 200 out of 258 < 1 2 3 4 5 6 >
Match Document Document Title
5452288 Method for the transmission of digital data in radio paging systems and corresponding radio paging receiver  
A method for the transmission of digital data elements including radio paging information elements, wherein the data elements are transmitted according to a technique of transmission implementing a...
5450395 Code position modulation system and method for multiple user satellite communications  
An embodiment of the present invention is a communications system for multiple users sharing the same maximal length code (MLC) in a code position modulation multiple access environment. A 1023...
5450071 Method and apparatus for addressing a single message to multiple addresses  
A paging system has a signal for transmitting a variable amount of messages to paging receivers. The signal has a synchronization signal, an address field, an information and a boundary signal...
5448759 Method for efficient bandwidth utilization when transceiving varying bandwidth messages  
In a communication system, a method that efficiently utilizes bandwidth of communication resources when transmitting first and second bandwidth messages to a communication unit may be accomplished...
5448228 Paging apparatus equipped with a clock function  
A paging apparatus with a time information generating circuit comprises a combination switch having multiple switch positions in different operation directions, so that a time setting mode is set...
5440298 Paging receiver having data rate detector for continuing address receiving mode  
In an address receiving mode of a paging receiver, an address codeword contained in each successive batch of a paging signal is compared with the address of the receiver to detect a match. The bit...
5430437 Transmission and reception of pager signals without useless sampling operation  
In a pager receiver for receiving first through N-th pager signals successively at a first predetermined period (T1) and comprising a battery saving switch and a receiving circuit connected to the...
5423057 Method and apparatus for sharing signaling formats in a communication channel  
A method and apparatus allows sharing first and second signaling formats (400, 708) in a communication system. The first signaling format (400) is synchronous and includes frames (401) transmitted...
5420576 Personal radio paging receiver having sync signal controlled DC/DC converter  
A personal radio paging receiver includes a radio section, a control section, a DC/DC converter, and a secondary battery. The radio section receives/demodulates an external radio signal and outputs...
5396496 Unused time slot detection and selection in a mobile radio communication system  
A mobile radio communication system includes a plurality of base stations connected to a network through wire lines, and a plurality of mobile stations connected to the base stations through radio...
5390340 Radio paging receiver capable of establishing clock synchronization even in the absence of a preamble signal  
In a radio paging receiver operable in response to a radio signal which includes a preamble signal, a call number signal, and a display information signal to decode the call number signal and the...
5381138 Intelligent over-the-air programming  
A selective call receiver includes receiver circuitry (20) and decoder circuitry (32). The receiver circuitry (20) receives selective call signals, including reprogramming messages (100). The...
5381133 Selective call receiver with battery saving features and method therefor  
A selective call receiver (200) includes a receiver (204) receiving paging signals including a preamble, a synchronization codeword, and at least address information. A controller (206) controlling...
5375252 Paging radio communications system and method  
A paging radio communications system includes a plurality of radio receivers, a call controller for receiving a call message which requests a connection with at least one of the radio receivers and...
5347268 Data handler for handling data having multiple data formats  
A radio frequency (RF) communication system transmits information including multiple data formats. The RF communication system receives the information (102) and parses the information into a...
5335246 Pager with reverse paging facility  
Position determining apparatus including at least one base station including a base transmitter which periodically transmits timing signals and a plurality of mobile remote units. Each remote unit...
5325088 Synchronous selective signalling system  
A selective call receiver (111) has a first mask (134A) stored within the selective call receiver (111) indicative of a first period of reception for receiving a transmitted communication signal...
5309154 Selective call receiver with a universal synchronization code operating mode  
A selective call receiver (30) for receiving selective call signals in a universal synchronization code operating mode receives signals having the conventional POCSAG sync code and signals having...
5303416 Method and apparatus for adjusting peak and valley acquisition rates of a signal received by a radio communication device  
A radio communication device (100) for receiving a signal comprises tracking circuitry (115) for tracking the signal to acquire peak and valley values of the signal, a threshold detector (150)...
5296849 Pager receiver for enabling to omit power-on signal for receiving synchronization code in pager signal  
A pager receiver is assigned to a particular call number and is for receiving pager signals of a predetermined baud rate by use of the battery saving technique. Each of the pager signal comprises a...
5283570 Multiple format signalling protocol for a selective call receiver  
A selective call receiver comprises a receiver for receiving a signal, the signal comprising an address identifying the selective call receiver, a first information packet having a first...
5272465 Automatic alarm code converter  
An automatic alarm code converter wherein a plurality of alarm dialers report alarm conditions using security industry standard pulsed tone, FSK, or DTMF formats and call through the PSTN to the...
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...
5239306 Dual mode receiver having battery saving capability  
A dual mode communication receiver a receiver for receiving information transmitted in a first and second modulation format on a common channel, a first demodulator for detecting information...
5237320 Radio paging system with different transmission speeds and receiver therefor  
A paging system includes a receiver adapted for receiving paging signals at a fixed bit rate of NR where N is an integer and R is a basic bit rate. A transmitter transmits at the NR bit rate,...
5233345 Selective calling receiver with multiple clock frequencies for receiving long messages  
A selective calling receiver includes a decoder having a reference clock oscillator and a CPU having a CPU operating clock oscillator. The decoder includes a timing control circuit for generating a...
5227777 Radio paging receiver for intermittently receiving a paging signal transmitted on different phases of a clock  
A radio paging receiver of this invention includes a decoder section. The decoder section includes a bit synchronization circuit, a preamble detector, a synchronization signal detector, an address...
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....
5206855 Multiple frequency message system  
A transmitter system for transmitting coded message signals on a plurality of channels of which at least one channel to be assigned to each of a plurality of geographical areas. The coded message...
5206636 Signal search method for selective call receiver  
A method of rejecting undesired signals in a selective call receiver operating in a POCSAG system comprises normalizing and counting data transitions that occur at a baud rate less than a...
5203014 Radio telecommunication device with a display for changed information in received signals  
A radio tele-communication apparatus of this invention is arranged as follows. A receiving circuit receives a signal including transmission information transmitted from a base station and outputs a...
5196842 Pager capable of operating in multiple paging systems  
A pager (400) capable of operating in a plurality of paging systems (210, 212, and 214) includes a receiver (404) for receiving information messages which include idle words from one of the paging...
5177478 Paging system having an effective ID-code transferring function  
A paging apparatus comprises a control device for controlling all other components of the apparatus. The control device can have a memory for storing the ID number of the paging apparatus. There is...
5170487 Paging system with multiple frequencies and multiple protocols  
The present invention provides a pager system which integrates a plurality of transmitters which operate at different frequencies. Some of the transmitters transmit paging messages using FM...
5168493 Time division multiplexed selective call system  
A signalling protocol comprising a plurality of interleaved phases is transmitted at various baud rates, the various baud rates being multiples of a base baud rate. The signalling protocol allows a...
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...
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...
5150362 Beacon carrier  
In a cellular mobile radio system a method of choosing at a mobile station an appropriate base station and time slot on a time division multiplexed radio channel for the purpose of call set up or...
5150110 Selective call communication system with remotely generated repeat messages  
A selective call communication system (300), operates to transmit an information signal (501) from a message origination site (305) to a plurality of transmitting sites (310, 311, 312). The...
5146216 Multiple message signalling protocol for a selective call receiver  
A selective call receiver comprises circuitry for receiving a first signal having a first address and a first information format, and a second signal having a second address and a second...
5138311 Communication system having adaptable message information formats  
A communication system includes an input (202) for requesting and receiving a first message information format and for requesting and receiving a second message information format, and controller...
5128934 Multiple transmitter message transmission system and method therefor  
A multiple transmitter message transmission system provides for the distribution of message packets from a central transmitter station to a plurality of remote transmitter stations on a common...
5128665 Selective call signalling system  
A paging system has a signal for transmitting a variable amount of messages to paging receivers. The signal has a synchronization signal, an address field, an information and a boundary signal...
5093659 Paging method and pager  
A paging system comprises a base station and a number of pagers. The base station transmits calling-number data and message data in the form of radio signals. The message data contains...
5089813 Method of super battery saving in a selective call receiver  
A paging receiver receives a message signal having an address field and a data field. The message has at least one address within the address field and a plurality of packets in the data field. The...
5051993 Mixed modulation level communication system  
A communication system has an information signal having a plurality of data streams. The data streams are simultaneously modulated on a multi-level symbol transmission. The data streams may have...
5025252 Paging receiver with over-the-air characterization of call signal processing  
A paging receiver is operative to receive and accept a call signal including a receiver characterization portion which is decoded by the paging receiver to govern processing operations,...
5014343 Squelch-tail eliminator  
A system and method to eliminate the squelch-tail in radio receivers used for data communications. The transmitter adds a brief period of unmodulated carrier signal to the end of each data...
5010547 Multiple messaging using a single selective call address  
A method is described for transmitting a plurality of messages within a single transmission having one address to a selective call receiver. An identification packet preceding each message...
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....
Matches 151 - 200 out of 258 < 1 2 3 4 5 6 >