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4616223 |
System of identifying local stations by a central interrogating station
A station identification system comprising a central interrogating station (10) and M local stations (100, 200), etc. arranged in parallel with each other along a transmission bus (20) which...
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4584719 |
Fiber optic workstation datalink interface
Workstations may advantageously be interconnected in a cluster arrangement wherein multiple "slave" stations utilize the database which exists in a "master" unit. The cluster interface has been...
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4582279 |
Modulation system for railway track circuits
A modulation system for railway track circuits in which a modulated signal is applied to a section of track for the purpose of detecting the presence or absence of a train on the section. Such...
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4580295 |
System for monitoring optical data bus transmissions
A circuit (2) used to monitor an electro-optic transmitter (1) associated with an optical data bus (17) senses voltage levels VA applied to an optical transducer (15). The voltage levels VA are...
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4555702 |
Remote control signal reproducing circuit
A remote control signal reproducing circuit for use in a remotely-controlled receiver which receives a modulated transmission signal subjected to a pulse modulation, reproduces an original remote...
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4499462 |
Circuit arrangement for the electronic code locking of locks
The circuit arrangement has a key for the serial feeding in of the code signals and is equipped with electronic arrangements for the storage of the code and for the processing of the signals. In...
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4498198 |
Binary signal decoding apparatus and method
An apparatus and method is provided for decoding a transmitted comma free coded signal, having a plurality of bits and two message frequencies, and suitable for application in controlling the...
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4465998 |
Burglar-proof barrier
Burglar-proof barrier providing protection against intrusions, comprising means for the transmission of signals modulated and coded by pulses in a predetermined code, means for the reception of the...
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4463345 |
Seed flow monitor
A seed flow monitor for use with a plurality of seed flow sensors which are located in individual tubes of a field seeder. In the event of detection of reduction of seed flow in any seed tube below...
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4453156 |
Load control receiver and method of operation
Method for detecting the presence or absence of an audio-frequency signal (VT) superimposed on a power supply network, the audio-frequency signal (VT) having a known frequency (fT) and an amplitude...
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4430652 |
Remote control system
A remote control system capable of utilizing manually encoded signals is disclosed. The system is particularly suitable for use in the logging industry because it is capable of utilizing...
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4384288 |
Portable radio frequency emitting identifier
An automatic identification system wherein a portable identifier, preferably shaped like a credit card, incorporates an oscillator and encoder so as to generate a programmable pulse...
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4344076 |
Feedback sensor for remote receiver in a power transmission system
A feedback sensor which detects the reception of pulses and the response thereto by the remote receivers of a load management system associated with a power transmission system. The receivers are...
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4320881 |
Fail-safe decoder for digital track circuits
A selected unique digital comma-free code word is transmitted through track section rails from one end and, when received at the other end, is applied serially to a shift register which supplies a...
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4310802 |
Logical waveform generator
Input logical data is sequentially divided by a data dividing circuit for each time slot into n data trains, of which each data block has an n time slot length. A clock signal which can be...
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4251812 |
Remote control system
A remote control apparatus is constituted by a command encoding device and a command decoding device. In the command encoding device, a timing pulse generator indicates the beginning and end of a...
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4232298 |
Remotely-controllable relays and filters therefor
A remotely-controllable relay which is controlled by 175 Hz ripple voltage superimposed on the mains supply voltage in an electric-power distribution network contains an oscillator generating a...
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4186345 |
Remote control system
A remote control system for selectively controlling a plurality of functions includes a receiver having a decoding circuit for decoding a command signal having alternating mark periods and space...
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4171468 |
Method and apparatus for remote control
A method is disclosed for remote control wherein coded commands are transmitted from a transmitter to a receiver. A respective time interval between a first energy impulse starting the transmission...
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4167004 |
Apparatus for detecting plural repetitive signals
Repetitive defect signals are produced, for example, by bar or rod inspection equipment whenever any one of plural roll sets in a rolling mill develops a roll crack. Defect signal repetitive rate...
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4091328 |
Remote control radio system
A system for individually adjusting a plurality of remotely located servo units according to the position of a manual control for each servo unit by broadcasting a carrier wave that is switched on...
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4041458 |
Arrangement for carrying out random selection among a plurality of selectable devices in a telecommunication system
Arrangement in a telecommunication system for random choice of one of a number of selectable devices, the condition of which is marked by the condition of a marking wire connected to the respective...
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4034300 |
Circuit arrangement for evaluating received oscillations of a predetermined frequency
A circuit arrangement for evaluating a received control signal of the type including a first signal of a first predetermined frequency and of a time duration which represents information, and a...
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4032848 |
Receiver for a coded electronic security system
The present invention pertains to a receiver for a coded electronic security system which includes a plurality of independent transmitting devices each of which generates a pulse coded RF signal...
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4002984 |
Circuit arrangement for determining the time duration of received oscillations
A circuit arrangement for evaluating received oscillations whose maximum possible time duration is predetermined, by determining the time duration of the oscillations. Pulses of a constant...
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3987414 |
Digital remote control for electronic signal receivers
A digital remote control system provides substantially simultaneous actuation of remote functions. Repetitive transmissions of a plurality of remote control instructions and an identifier pattern...
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3946378 |
Dynamic digital pulse display
An arrangement for the dynamic direct display of pulses in the nanosecond range operates without oscilloscopes or other special display apparatus. To display pulse timing or amplitude...
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3943491 |
Ultrasonic digital receiver
A receiver of ultrasonic pulses having a known pulse width and at a known spacing includes a gate which is normally conditioned to accept the ultrasonic pulses. When the first pulse is received,...
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3906366 |
Remote control system
A remote control system is disclosed which may gradually control a device or vary a control signal through a non-mechanical oscillation transmission system. The transmitter comprises a...
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3888181 |
Munition control system
1. A munition safing, arming and firing system comprising means for transting a code consisting of pulses of differing frequencies, means for receiving said code, means for segregating the received...
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3852718 |
APPARATUS FOR INTERPRETING NUMERICALLY CODED PULSE GROUPINGS IN A LINE
An electrical supervisory signaling system employing a plurality of McCulloh-type pulse transmitters which are operable selectively to transmit over a line one or more like groups, or "rounds," of...
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3811112 |
CONTROL COMMAND SECURITY IN BINARY REMOTE CONTROL
In a remote control system wherein control commands are sent as telegrams, each containing a fixed number of binary bits, transmission of each telegram is required to span a time interval divisible...
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3760422 |
REMOTE CONTROL SYSTEM FOR LOCKING DEVICE
A remote control system for automatically controlling actuation of a device, such as a lock, in response to the proximity of the operator to the device. A portable transmitter providing a coded...
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3718907 |
SCANNER CIRCUIT
The scanner circuit includes a counter that provides sequential scanning pulses. In response to a current pulse, the counter circuit is stopped. The counter is enabled to start a preset number of...
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3715579 |
RATE DECODER WITH ACTIVE FILTERS
The decoding system provides a control signal in response to an input of one of a plurality of selected code rates. The improvement includes a band-pass filtering means for each code rate which is...
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3699521 |
DECODING SYSTEM HAVING PLURAL FREQUENCY CHANNELS
A vehicle control decoding system has been provided having a plurality of filters tuned to detect code rates for selectively actuating output relays. The decoding system includes first checking...
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3686635 |
INTEGRATED CIRCUIT DECODER RESPONSIVER TO TWO SEQUENTIAL TONES, WITH GROUP CALL PROVISIONS
Decoder circuit for use with two tone sequential calling signal, which responds only to two tones of predetermined frequencies, amplitudes, durations and time spacing. The circuit is constructed in...
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3651469 |
BINARY TOUCH-TUNE SYSTEM WITH MEMORY
A remote control system employing a binary memory matrix is disclosed. A binary control code word is generated by selective application of clock pulses to a step-controlled code generating means....
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3601706 |
PULSE INTERVAL DECODER
A system for determining the average length of intervals between pulses in a finite train, including a pulse counter, two alternately operating interval timing devices, an arithmetic divider, and...
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3579190 |
AUTOMATIC ALARM DETECTOR
A system is provided for unattended monitoring of international distress signals. The system employs an RF section which responds to all the signals in the frequency range of interest. The RF...
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3573734 |
SOLID STATE TOUCH-TUNE SYSTEM
Remote tuning system for a plurality of electronic services employs a common tuning control, function selector, and indicator. Tuning is accomplished by selectively applying pulses of variable...
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3496546 |
PULSE DECODING SYSTEM HAVING TAPPED DELAY LINE
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3483518 |
CODED SUPERVISORY CONTROL SYSTEM
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3466608 |
DIGITAL-CODE-EXTRACTOR SYSTEM
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3462740 |
PRECISION PULSE DECODER
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3383659 |
Automatically responding circuit for providing different output signals as the inputsignal changes
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3327304 |
Command generator for remote control systems
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3316488 |
Dual modulated remote control transmitter
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3287701 |
Transistorized electronic decoder responsive to plural frequencies
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3274552 |
Adaptive missile control system
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