Matches 201 - 218 out of 218 < 1 2 3 4 5
Match Document Document Title
4270206 Transceiver for phase-shift modulated carrier signals  
A transceiver for a phase-shift-modulated carrier data communications system, includes a digital-data-recovering receiver having relatively wide band-pass filters and a complimentary...
4250489 Distribution network communication system having branch connected repeaters  
Bidirectional addressable repeaters of a power line carrier communication system each include an address recognition and a receive and transmit control logic circuit having programmable zone and...
4210901 Signal repeater for a distribution network communication system  
A distribution network power line communication system divided into addressable communication zones defined by signal repeaters located at spaced intervals along the distribution network. The...
4185272 Distribution control system  
A redundant digital address and function code is generated at a central location and transmitted through a signal circuit or an A.C. power distribution circuit to a plurality of receiver locations....
4173754 Distributed control system  
A redundant digital address and function code is generated at a central location and transmitted through a signal circuit or an A.C. power distribution circuit to a plurality of receiver locations....
4097692 Method and apparatus for the two-way transmission of pulses  
In a method and apparatus for the two-way transmission of pulses between a plurality of out-stations generally connected to a common power supply network and at least one control unit, the data is...
4040046 Remote data readout system for transmitting digital data over existing electrical power lines  
A system for providing remote readout of a plurality of groups of data indicating devices including a control unit for each group of data indicating devices for receiving interrogate data signals...
4008467 Power line carrier communication system having efficient carrier signal coupling of distribution secondary lines  
An arrangement of components for a distribution line communication system. Two or more independent secondary distribution lines are connected, through distribution transformers, to a primary...
3980954 Bidirectional communication system for electrical power networks  
An arrangement of communication components to provide communications between a central control center and various customer load locations in an electrical power distribution system. Control or...
3973087 Signal repeater for power line access data system  
A signal repeater is described for relaying information in a two-way communication system superimposed on a power distribution network. The repeater senses signals passing in either direction in...
3973240 Power line access data system  
A two-way communication system is disclosed utilizing power transmission lines as the transmission medium. The system is a multilevel repeater system in which each repeater has a unique address....
3962547 Repeater coupler for power line communication systems  
Apparatus for connecting separate transmitters of a carrier communication system to the same location on a power distribution line. A low-power transmitter is connected to the primary winding of an...
3876984 APPARATUS FOR UTILIZING AN A.C. POWER LINE TO COUPLE A REMOTE TERMINAL TO A CENTRAL COMPUTER IN A COMMUNICATION SYSTEM  
A system for interfacing a telephone party line extending from a central computer with a number of remote inquiry terminals. The system includes an a.c. power line disposed between the party line...
3733586 METER INTERROGATION SYSTEM HAVING STROBE LOGIC CONTROL  
A system adapted for connection to a polyphase power distribution network to interrogate a plurality of separate watt meters and store respective readings from the watt meters. The system comprises...
3702460 COMMUNICATIONS SYSTEM FOR ELECTRIC POWER UTILITY  
An electric power utility communication system is disclosed comprising a plurality of geographically distributed group control units and groups of terminal processor units, with each such terminal...
3656112 UTILITY METER REMOTE AUTOMATIC READING SYSTEM  
A digital data processing and communications system for a remote utility meter data acquisition system is disclosed. The system employs an electronic interrogator which may be either mobile or...
3359551 System for remotely controlling the operation of a power distribution network  
2981940 Communication systems  
Matches 201 - 218 out of 218 < 1 2 3 4 5