Matches 101 - 150 out of 258 < 1 2 3 4 5 6 >
Match Document Document Title
5689440 Voice compression method and apparatus in a communication system  
The present invention comprises a method for compressing a plurality of voice signals within a voice communication resource (see FIG. 6) having a given bandwidth within a voice communication system...
5686901 System and method for queuing and batching messages for wireless transmission  
A paging controller (10) assigns pages to particular batch positions utilizing a metric that minimizes the gaps between messages in a batch so as to increase the efficiency and throughput of the...
5686900 Selective calling receiver with message display function  
A selective calling receiver detects a message contained in the received selective calling signal and a message identification code given to this message. A counter counts the number of messages...
5686898 Paging network identification information distributed in address field  
A method by which a data communication receiver may recognize a specific channel comprises the steps of receiving (1605) a data stream on a first channel for a first amount of time to determine...
5682147 Method and apparatus for selecting a receive frequency in a communication receiver  
A method and apparatus select a receive frequency of a receiver (400) in a system having coverage areas divided into zones. A primary scan list is stored in the receiver (400) and contains coverage...
5677681 Code transmission system and portable pager in radio paging system  
If a code is transmitted at a first transmission rate, a base station modulates the entirety of the code, namely a preamble, a synchronizing signal and a call-data, by two values and transmits them...
5670951 Radio communication device and method for generating threshold levels in a radio communication device for receiving four-level signals  
A symbol detector (110) includes an analog-to-digital converter (115) for converting signal voltages to digital values and peak and valley counters (310, 315) for tracking the digital values to...
5666657 Method in a selective call receiver for applying conditional partial address correlation to a message  
A selective call receiver (100) uses a method of partial address correlation to decode a portion of a selective call signal transmitted by a radio communication system so as to reduce energy...
5666107 Method and apparatus for efficient roaming among communication system  
A communication system (100) for providing messages to a pager (140) includes a first sub-system (105) having a home terminal (125) for normally transmitting the messages to the pager (140) in a...
5642397 Paging system which combines a paging signal with a standard broadcast baseband signal  
An electronic paging system and method for transmitting paging signals over a broadcast network, such as a standard pre-existing commercial radio broadcast system, adds paging signals to a normal...
5640682 Radio telecommunication device with 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...
5638369 Method and apparatus for inbound channel selection in a communication system  
A system controller (102) is used in a communication system (100) which has a set of inbound channels. The system controller (102) includes a processing system (204) for generating a first message...
5635914 Method and apparatus for dynamic group calling in a selective call system  
A selective call system provides dynamic group calling by transmitting a paging message (FIG. 10) to each data communication receiver in a defined group. The paging message comprises a group call...
5629940 Transmitting and receiving long messages in a wireless one-way communication system while reserving selected slots for short messages  
A receiver operates in both a first polling protocol and in a selectable data acquisition protocol to both conserve power while quickly read long messages in wireless one-way communication systems....
5627860 Peak and valley detector for a selective call receiving device  
A peak and valley detection system and method are shown for a selective call receiving device (10). The peak and valley detection system quickly and accurately detects and tracks to the peak and...
5625629 Method of ensuring bandwidth availability for non-page traffic in a communications systems  
A method of ensuring bandwidth availability for non-page point-to-point traffic in a communications system employs the steps of assembling a Superframe within a base station, and transmitting the...
5625351 Messaging system having roaming capability  
A messaging system capable of transmitting messages to receivers which roam between coverage areas. In one configuration, a coverage area (100) is divided into a plurality of zones (110). A single...
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...
5613194 Satellite-based cellular messaging system and method of operation thereof  
A satellite-based, world-wide cellular messaging system transmits paging messages to pagers. The messages are transmitted at unique times, on unique frequencies, and into uniquely identified cells...
5612682 Method and apparatus for controlling utilization of a process added to a portable communication device  
A method and apparatus in a communication system operated by a service provider controls utilization of a module (602, 606) added to a portable communication device (122) including a transceiver...
5603088 Method and apparatus for determining a quality level of an analog signal in a radio communication system  
A radio transmitter (103) transmits a cycle (320) including a digital portion (330) generated by frequency modulating a radio carrier with a digital signal and an analog portion (440) generated by...
5598148 Method and a network for transmitting local and global radio calls  
A paging network having a master transmitter and several local radio transmitters is disclosed. The network is designed to allow the transmission of local and global messages. Global messages must...
5596315 Message unit for use with multi-beam satellite-based messaging system and method of operation thereof  
A satellite-based, world-wide cellular messaging system transmits paging messages to pagers via multiple beams. A message unit monitors multiple beams, recording the visit information for each...
5592531 Selective call communication system having adaptive voice data entry  
A selective call communication system (100), such as a paging system (100), and a method therefor, for using a lexicon (134) for voice data entry in the selective call communication system (100) is...
5584051 Radio broadcast transmission system and receiver for incompatible signal formats, and method therefor  
The present invention provides for an analog and/or digital radio broadcast transmission system and radio receiver therefor, which includes a control signal having an item of control information...
5581245 Paging system control apparatus  
In a paging system control apparatus that employs a POCSAG signal consisting of a plurality of batches each consisting of a plurality of groups, it is intended to improve the efficiency of using...
5572193 Method for authentication and protection of subscribers in telecommunications systems  
A method and apparatus for authentication between a subscriber unit and a communication unit is provided. The authentication process includes: maintaining an historic non-arbitrary value in the...
5568655 Detection of pager signal in FM radio transmission  
Apparatus for detecting the presence of a paging signal at 57 KHz in a frequency modulated transmission includes a phase locked loop (14) which is sensitive to the presence of a pager signal. The...
5561848 Two way paging system with answer-back function  
After bit synchronization and frame synchronization are established in accordance with a transmission signal from a transmission office, reception RX is stopped until a reception timing assigned to...
5559506 Method and apparatus for encoding and decoding a digital radio signal  
A selective call receiver (105) for use in a selective call communication system (100) and a controller (206). The receiver (203) is for receiving and demodulating a digital signal which includes a...
5555183 Method and apparatus for synchronizing to a synchronous selective call signal  
A selective call receiver (111) receives a synchronous selective call signal (99) having synchronization portions (102 and 104) and a frame identification portion (106). Upon finding the signal the...
5550535 Bank balance notification by wristwatch pager  
A wrist watch radio pager which includes a microprocessor and which receives different types of messages. Normal messages received by the wrist watch pager are displayed in a conventional fashion....
5546394 Message fragmenting in a time diversity radio system  
A time diversity communication system (150) comprises a messaging terminal (154), a queue (156) at the messaging terminal for queuing incoming messages, an encoder (158) for encoding a first...
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...
5542115 Paging method and apparatus  
A two-way paging system utilizes four local frequencies for transmissions between pager units (22) and a central control station (20). A first local frequency (f 1 ) carries a local clock; a second...
5539395 Location dependent information receiving device and method  
A portable device (55) has a first receiver (62) for receiving a paging signal (40-52) from a paging system (10). A second receiver (72) receives area identification signals (20-26) from a second...
5537407 Watch pager system and communication protocol  
Battery saving can be achieved in a selective call receiver (i.e. in a radio pager) by only periodically activating the receiver. The activation rate or time cycle of the receiver determines how...
5537100 System and method for analyzing coded transmission sent to mobile message receivers  
A pager decoding system is provided which is compatible with the POCSAG encoding standard and which improves battery savings. The disclosed pager includes a baud rate detector for evaluating...
5537097 Method for transferring messages in a one-way communication system  
The invention relates to a method for transferring messages in a one-way communication system, particularly a paging system. The transmission of the messages is organized in such a manner that the...
5535428 Method and apparatus for selectively retaining messages received by a radio receiver based upon message content  
A radio receiver (110) for processing a message including information about a sports event includes a message processing element (555) for locating, within the message, a final flag (225)...
5535427 Radio receiver remotely controllable to inhibit the display of a received message  
A radio selective calling receiver which can display a message sent from a transmission site and can be remotely controlled to set a reception inhibition status and a reception permission status. A...
5535207 Method of dynamically allocating time slots on a packet data communications channel  
A method of dynamically allocating active time slots for a terminal (103) that is operating in a packet data communications system (100) which includes a fixed network (101) and user terminals...
5525974 Radio selective calling receiver for receiving a call signal intermittently under an asynchronous system  
In a radio selective calling receiver or so-called a pager having a middle synchronization function, detection of a BCH code is performed after synchronization is established by erroneous detection...
5517491 Method and apparatus for controlling frequency deviation of a portable transceiver  
A method and apparatus to control frequency deviation of a portable transceiver (PT) (122) utilizing a time-division-duplex (TDD) protocol for communicating with a base transceiver (116). The base...
5495233 Radio paging receiver capable of improving accuracy of frame synchronization  
In a radio paging receiver for receiving a pager signal comprising a succession of frames each of which consists of a first through n-th group of signals, a first clock generating unit generates a...
5481258 Method and apparatus for coordinating clocks in a simulcast network  
A clock synchronization system for synchronizing a number of paging stations (24) with a system controller (23). Each paging station has a clock that includes a counter (52) that indicates the...
5473667 Paging system with third party authorization  
A paging system with a number of central stations, each of which contains a number of pager apparatus associated with it. Each pager apparatus responds to one or more identifying numbers so that a...
5463382 Method and apparatus for controlling message transmissions in an acknowledge-back selective call communication system  
A method and apparatus control message transmissions in an acknowledge-back selective call communication system (100) including an infrastructure (102) and a selective call receiver (120). The...
5455579 Digitized stored voice paging receiver  
A paging receiver device and method are disclosed in which analog information transmitted from an external source such as a paging transmitter are received and decoded. The analog information...
5452356 Paging transmission system  
Method and apparatus for sending, receiving, and displaying custom coded textual and/or graphic data via an alphanumeric paging system wherein source data in binary form is encrypted with a...
Matches 101 - 150 out of 258 < 1 2 3 4 5 6 >