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6035196 |
Automatic cell transfer based on reverse channel characteristics
In a distributed communication system, a mobile initiates a cell transfer or channel top based upon an assessment of measured parameters on the reverse channel. Advantageously, a mobile initiates a...
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6009553 |
Adaptive error correction for a communications link
A method of data transfer between a transmitter and a receiver over a communications link achieves maximum throughput by dynamically adapting a coding rate, and specifically an error correction...
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5748100 |
Reliable wireless message distribution system
An acknowledge-back selective call system (100) transmits a first acknowledge-back page (300) that includes a first message data (306) and address information (302) that matches a first...
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5719562 |
Paging system using compact hierarchical addressing
An hierarchical addressing mechanism for use in a paging system is disclosed. The paging system assigns a compressed organization identifier to each of the organization identifiers for the...
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5710978 |
Logging recorder system for trunking radio
A logging recorder system for trunking radio includes a device which monitors a plurality of channels of the trunking radio system and outputs analog signals representative thereof. A digitizer is...
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5625890 |
Logging recorder system for trunking radio
A logging recorder system for trunking radio includes a device which monitors a plurality of channels of the trunking radio system and outputs analog signals representative thereof. A digitizer is...
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5479582 |
Message-oriented bank controller interface
Disclosed is a message oriented interface for communication between a bank controller unit and peripheral devices, such as channel units, in digital loop transmission systems. At least four...
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EP0394357B1 |
ACKNOWLEDGE BACK PAGER WITH APPARATUS FOR CONTROLLING TRANSMIT FREQUENCY
Abstract not available for EP0394357 Abstract of corresponding document: US4891637 An acknowledge back (ack-back) pager is provided for use in a paging system including a central station which...
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EP0398934B1 |
ACKNOWLEDGE BACK PAGER WITH FREQUENCY CONTROL APPARATUS
Abstract not available for EP0398934 Abstract of corresponding document: US4823123 An acknowledge back (ack-back) pager is provide for use in a paging system which includes a central station which...
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5420574 |
Channel allocation mechanism
A channel allocation mechanism especially useful in a trunked communication system that can accommodate both voice and data signals, and that operates in true trunked manner to efficiently utilize...
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EP0398926B1 |
FREQUENCY DIVISION MULTIPLEXED ACKNOWLEDGE BACK PAGING SYSTEM
Abstract not available for EP0398926 Abstract of corresponding document: US4875038 An acknowledge back (ack-back) paging system is provided which includes a central station which transmits a group...
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5265093 |
Hardware interface and protocol for a mobile radio transceiver
A system and method for communicating control signals between a digital mobile transceiver, a digital control head, and a mobile data terminal over a common serial peripheral bus uses a message...
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5115233 |
Shared data/voice communication system with programmable data priority
A shared data/voice communication system wherein data traffic may be guaranteed priority at a set, but programmable, level of system capacity and wherein interference between such data and voice...
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5046066 |
Wireless local area network
A local area network permits wireless transfer of digitized data among data processing machines in the interior of a building. The network includes a base station which may commonly be associated...
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4891637 |
Acknowledge back pager with apparatus for controlling transmit frequency
An acknowledge back (ack-back) pager is provided for use in a paging system including a central station which transmits a group of message signals to a group of ack-back pagers which are addressed...
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4882579 |
Code division multiplexed acknowledge back paging system
An acknowledge back (ack-back) paging system is provided which includes a central station which transmits a group of message signals to an group of ack-back pagers which are addressed as a group....
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4875038 |
Frequency division multiplexed acknowledge back paging system
An acknowledge back (ack-back) paging system is provided which includes a central station which transmits a group of message signals to a group of ack-back pagers which are addressed as a group....
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4873520 |
Paging receiver for storing digitized voice messages
A selective call paging receiver for receiving analog voice information converts the analog information to digital information and stores the digital information in a memory of the paging receiver....
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4831647 |
Radiotelephone credit card data communications
Method and apparatus for communicating credit card information read at a mobile radiotelephone unit is disclosed. Data read from a credit card is placed in a variable length error protected format...
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4823123 |
Knowledge back pager with frequency control apparatus
An acknowledge back (ack-back) pager is provide for use in a paging system which includes a central station which transmits a group of message signals to a group of ack-back pagers which are...
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4684941 |
Method of communications between register-modelled radio devices
A register-modelled radio system comprising a plurality of register-modelled processors having addressable registers for modelling the virtual state of the processor; a serial bus, interconnecting...
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4637022 |
Internally register-modelled, serially-bussed radio system
In accordance with the present invention, there is provided a register-modelled radio system comprising a plurality of register-modelled processors having addressable registers for modelling the...
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