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7260733 |
Distributed control system
In a distributed control system, a first electronic control unit sends trigger information to a second electronic control unit. The trigger information includes a timing that triggers the second...
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7002464 |
Relative timing mechanism for event sequencing without clock synchronization
A remote sensing system operable to collect sensor timing data comprising a central data hub for detecting the occurrence of an event and processing information about the detected event, the remote...
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6879917 |
Double-ended distance-to-fault location system using time-synchronized positive-or negative-sequence quantities
When a disturbance (for example, lightning strike) occurs on a high-voltage overhead transmission line, the line must be checked for any possible damage. If the distance-to-fault is known, line...
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6836219 |
Method for synchronizing at least two control devices
A sensor device having an incremental encoder and a measuring sensor generating a measuring signal is assigned to two control devices. A synchronization device generates a synchronization signal. A...
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6545613 |
Circuit for compensation of a transducer output signal
A signal conditioning circuit is provided for a plurality of pressure signals generated by individual pressure sensors mounted upon a hydraulic control valve. The signal conditioning circuit...
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6526365 |
Low-power/wideband transfer function measurement method and apparatus
The invention is a method of measuring transfer functions of a physical system using a wideband excitation signal by exciting the system with a low-power, wide band input signal that has a rich...
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6337636 |
System and techniques for seismic data acquisition
A data acquisition system has a central station connected to a plurality of nodes over a network. Each node is connected to receive signals from one or more sensors ad each is configured to have...
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6304191 |
Uni-directional protocol
The present invention provides a unidirectional protocol for communicating data from a plurality of utility meters and a meter adapted to carry out this protocol. The meters are adapted to monitor...
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6229454 |
Telemetric measuring method and system
The invention relates to a telemetric measuring method and system. In the method, different sensors are used to measure at least two different variables, i.e. heartbeat, the speed and pedalling...
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6111872 |
Telemeter telecontrol system
A master station performing continuous operations is communicatively coupled with a plurality of remote stations performing intermittent transmission/receiving operations in constant cycles....
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5883886 |
Utility meter readings on a reverse channel of a two-way paging system
A meter reading device (22) for wirelessly transmitting meter readings from a plurality of meters (30) includes a receiver (44) for receiving a synchronization signal (60), a clock (40) connected...
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5760707 |
Method of transmitting multiple serial signals
In a method of transmitting multiple serial signals, parallel signals are converted into serial signals by a plural number of parallel-to-serial converters contained in a transmitter, serial...
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5451938 |
RF meter reading system
The RF meter reading system includes a transmitter having an encoder. Meter data is encoded and modulated using a bi-phase modulating scheme. In order to uniquely identify the start of a data...
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5355130 |
Ultrasonic proximity switch with a synchronizing device
When operating adjacent ultrasonic proximity switches, faulty output states can occur due to mutual interference (e.g., the incorrect allocation of echo signals). To solve this problem, it is known...
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5058080 |
Multiple transmission path seismic telemetering system
In a marine seismic data acquisition system, a plurality of seismic data transmission paths are utilized to conduct seismic data to a central recording unit from seismic data acquisition modules...
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4855735 |
Recovery of data clock signals
A single link digital telemetry system transmits data in serial form from a sending station. The data clock signal is recovered at a receiving station for data synchronization purposes. To achieve...
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4663744 |
Real time seismic telemetry system
A real time seismic telemetry system includes a central station (10) for communication with a plurality of remote data acquistion units (14). The command station (10) has a command unit (34) for...
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4636790 |
Addressable port telemetry system
An improved telemetry system for transferring data signals to and from a plurality of serially-connected, addressable data ports. The telemetry system includes a plurality of serially-connected...
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4633421 |
Method for transposing time measurements from one time frame to another
A method for transposing the time of an event as read at a remote station with one clock to the time frame of another clock at a master station when the clocks are not synchronized and are of...
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4628493 |
Sensor system with time division multiplexing telemetry
A seismic array containing a large number of seismic sensors, which may be optical hydrophones, has successive sections, each of which contains a subarray of sensor channels, interconnected by a...
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4575720 |
Data acquisition transmitter and receiver
A transmitter has a plurality of parallel inputs, and each input is connected to a switch. The transmitter receives a trigger signal that has a constant frequency. Using the trigger signal, the...
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4547056 |
Digital circuit with improved input/output connections
In connecting a microprocessor to several condition-sensitive switches and several slow-reacting loads such as motors and solenoids, the input/output ports of the microprocessor may be simplified...
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4442426 |
Signal transmission
Plural transmitters, which transmit signals to a common receiver, transmit their signals in a fixed time-staggered pattern. As a result, the individual signals which are transmitted by the...
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4390986 |
Digital subscriber communication system
A digital subscriber communications system for transmitting voice and data information is disclosed. The signal transmissions, on any suitable medium, are in an optimized sixteen bit per frame...
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4361838 |
Remote meter reading arrangement
A remote meter reading arrangement in which power for the remote terminal is supplied from the data collection terminal by transmission lines. At the moment power is applied to the remote terminal,...
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4218767 |
Transmission line seismic communications system
A seismic communications system including a central control and recording station and a plurality of remote data acquisition stations, the stations being approximately in line and connected to each...
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4053714 |
Electrical data collecting device
This invention relates to data transmission system of the type where a plurality of transmitters are located at a location remote from a receiver and are adapted to transmit information from their...
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3986162 |
System for the multiplexed transmission of signals from seismic receivers
An installation for the multiplexed transmission of signals from seismic eivers, each associated with a respective multiplexing circuit, connected in series in a transmission line between a...
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3962697 |
Low level bio-telemetry system using C/MOS multiplexing
A low-power, transient-free, multi-channelled bio-telemetry system utilizes series of C/MOS switches coupled to the data sampling electrodes. Shift register pulses selectively enable the switches...
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3943488 |
Multiplex telemetering system
A multiplex telemetering system for transmitting a group of data signals each representing a distinct analog value, over a common channel to a receiving terminal where the data signals are fed into...
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3793636 |
NONCONDUCTIVE DATA LINK CONTROL APPARATUS
Apparatus provides a nonconductive data link between command and response locations remote from each other for accomplishing substantially proportional control and includes safety features to...
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3491338 |
SYSTEM FOR SYNCHRONIZING A RECEIVER AND TRANSMITTER AT OPPOSITE ENDS OF A TRANSMISSION PATH AND FOR EVALUATING THE NOISE LEVEL THEREOF
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3440657 |
MULTICHANNEL MULTIPLEX COMMUNICATION SYSTEM USING PULSE WIDTH MODULATION AND AN AUDIO SYNC ON ONE PULSE
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3357006 |
Electronic means for repetitively displaying analog signals upon a display device
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3270321 |
Selective data sampling system
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3257651 |
Pulse position modulation information handling system
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3199081 |
Circuit arrangement for giving permission to transmit to one of a number of sources of information according to a fixed priority
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3079595 |
Multi-channel signal transmission system
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3052875 |
Decommutator
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3048786 |
Synchronizing signal generator for demultiplexing system
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2974313 |
Multiple reading instruments and systems for remote indication
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2908894 |
Meter reading system with pulse train transmitters
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2852763 |
Telemetering receiving systems
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2845613 |
Phase-sampling telemeter
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2835884 |
Telemetering system
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2816169 |
Multiplex communication system
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2798986 |
Electrical apparatus
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