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Match Document Document Title
8928459 Precision location methods and systems  
Systems and methods are described herein for determining the location of a transmitter by jointly and collectively processing the full sampled signal data from a plurality of receivers to form a...
8749358 Passive transponder for an RFID system, and method of transmitting data from/to a data source of such a passive transponder  
A passive transponder includes an antenna, an antenna oscillator circuit and a data source. The antenna oscillator circuit is configured to operate at a first resonant frequency or at a second...
8723646 Acoustic wave and radio frequency identification device and method  
An identification method and identification device are presented employing radio frequency and acoustic wave communication modes. The identification method includes: receiving at an acoustic wave...
8248209 Device for communicating between a mobile element and a fixed element  
Device (D) for communicating between a mobile element and a fixed element, includes: an electromagnetic field-based reader (L) including a transmitter with a transmitting antenna and a receiver...
8094024 Amplitude shift keying demodulator and radio frequency identification system using the same  
An exemplary amplitude shift keying (ASM) demodulator and a radio frequency identification (RFID) system using the same are provided. The ASM demodulator is adapted to demodulate an alternating...
7786892 Method for interpretation of a radio-electrical command  
A method for the interpretation of a radio-lectrical command for equipment in which the command is interpreted as a function of the emission zone is provided. This is achieved whereby the...
7688014 System and method for a moveable barrier operator  
A communication protocol is employed between a movable barrier operator and an associated wall button using the traditional signaling wires connecting them. Implementing the communication protocol...
7106188 Method and system for providing an activation signal based on a received RF signal  
A method and apparatus are described for providing an activation signal based on a received radio frequency (RTF) signal. The apparatus includes an RF receiver configured to admit a received RF...
6970073 Vehicular rearview mirror system with microcontroller  
A vehicular rearview mirror system includes an interior rearview mirror system having an electrochromic reflective element, a digital electrochromic drive circuit supplying a drive signal to the...
6784785 Duplex transmission in an electromagnetic transponder system  
A method of transmission between two elements chosen from a terminal and a transponder, each element including an oscillating circuit, a modulator and a demodulator, including simultaneously...
6570486 Passive remote access control system  
Access to a motor vehicle is controlled by periodically transmitting an interrogation signal from a control circuit on the vehicle. Upon receiving the interrogation signal, a hand-held remote...
5939997 Detection method of bus termination  
A system for detecting whether a bus used to connect units in an in-flight entertainment system is properly terminated. A detection circuit generates a bus termination signal when a terminating...
5864301 Systems and methods employing a plurality of signal amplitudes to identify an object  
A system and method for identifying objects. A preferred embodiment employs a radio transceiver on each object. Each article is identified by recording an amplitude at which the respective...
5715414 Four-value data wireless signal receiver  
A pager is provided with a differentiator circuit and an integrator or a comparator circuit. The differentiator circuit turns received four-value analog signals into signal level variations. In a...
5619190 Trainable transmitter with interrupt signal generator  
A trainable transceiver provides an integrated trainable transmitter and control system receiver for a vehicle electrical system. The transceiver includes an input circuit and an output circuit...
5583493 Process and apparatus for the remote polling of measuring points  
A process and a device for the remote interrogation of measuring points is offered that form at least one group belonging together spatially and that supply electric measuring signals that are...
5486824 Data processor with a hardware keyscan circuit, hardware keyscan circuit, and method therefor  
A data processor (50) includes a hardware keyscan circuit (54) to interface to an external keypad matrix (80). In one embodiment, the data processor (50) has a first register (62) for driving data...
5486843 Signal level indicator and associated method  
A signal level indicator (204, 304) displays the magnitude of an input signal (421) by illuminating each of a number of five LEDs (314-318, 414-418) for an individual period of time. The number of...
5150112 Interface for use between two communication units  
An interface for use between a first communication unit having a two-wire connection and a second communication unit having a single-wire connection includes a comparator (IC1) having a fixed...
5140316 Control apparatus for powered vehicle door systems  
Control systems including control circuitry and optional communications systems for operating a slding power-operated member of an automotive vehicle. A powered sliding door in an automotive...
4783658 Method and system for detecting encoded radio signals  
A method for detecting an encoded radio signal involves comparing the received signal amplitude with a predetermined threshold amplitude. The difference between the received signal-component...
4721953 Remote control system  
Remote-control system comprising a main unit and, connected at a distance via a pair of conductors to the main unit, an operating unit which comprises a series circuit of a number of diodes...
4695840 Remote switch position determination using duty cycle modulation  
A system for determining the position of a plurality of remotely located switches having a binary weighted current controlling means connected to each switch for providing a waveform having a...
4675672 Control system for enabling a plurality of different functions  
A control system is provided for selectively generating one of a plurality of control signals with each signal corresponding to a particular predesignated function of a system such as a video...
4660033 Animation system for walk-around costumes  
A complete system for animating external features of a full size walk-around costume designed for the entertainment industry is disclosed. The animation system comprises two major parts: the...
4658150 Impedance discriminator responsive to operation of switches mounted on a steering wheel  
Apparatus for effecting the impedance discrimination for use in an automobile comprises a plurality of switches (11-14) mounted on a steering wheel, and a plurality of first impedance elements...
4602253 Apparatus for mutual information transmission in a lock and key system  
An apparatus for mutual information transmission between an electronic lock and a key uses antenna coils at both the key and lock. A periodic signal is emitted from the lock and is received by the...
4575707 Waiting time display system  
A waiting time display system comprises a plurality of remote stations each including a waiting time display unit comprising a display portion for producing a visual display corresponding to...
4570163 Video camera control system  
A control system is provided for selectively generating one of a plurality of control signals with each signal corresponding to a particular predesignated function of a system such as a video...
4570160 Signal encoding and decoding system for driving a remote display  
A system is provided for transmitting data from at least one control position to at least one remote display position over a plurality of transmission lines coupled between the control position...
4560984 Method and apparatus for detecting the collision of data packets  
Method and apparatus for detecting when a collision occurs between two or more binary data signal packets at a single binary data signal receiver. Whenever a packet is transmitted, a large signal...
4531126 Method and device for analyzing a very high frequency radiation beam of electromagnetic waves  
The invention refers to the analysis of a very high frequency radiation beam of electromagnetic waves. According to the invention, a network of conductor wires is placed in the path of a beam to...
4453088 Multiplex system for steering wheel mounted switches  
A multiplex system is disclosed in which a plurality of auxiliary switches are mounted on a vehicle steering wheel and are selectively actuable to transmit predefined current levels through the...
4441098 Multiposition switch with minimum interconnections  
A frequency synthesized transceiver capable of tuning to a plurality of communication channels is disclosed. The transceiver includes a receiver section and a transmitter section which are coupled...
4430576 Remote load selector circuit and method  
A method and circuit for controlling the selection of remote electrical loads. An illustrated embodiment of the remote load selector circuit is depicted in conjunction with an electric ceiling fan...
4367470 Door operation control apparatus  
A main control circuit for controlling a door open-close drive motor and a lamp illuminating the interior of a garage is disposed in a body of a door operation control apparatus, and an interface...
4340824 Auxiliary steering wheel command system  
This invention relates to the use of a multiplexing technique to allow for the unambiguous enabling of remotely located receiving devices. In particular, a plurality of pushbutton switches, each...
4327356 Arrangement for monitoring the performance of a digital transmission system  
A monitor for monitoring the performance of a digital transmission system has three level sensors for sensing at decision instants the level of a signal derived from a transmitted signal. A first...
4323895 Display device for dashboard of automobile  
A display device, e.g. for dashboard of automobile, of the type having indicator lights, e.g. electroluminescent diodes driven by power conductors, including n parallel power conductors, with n...
4322718 Sound-activated rotary device  
There is disclosed herein a sound-activated device which is adapted to operate rotary loads, such as a turntable, a circular display, a suspended mobile and/or a fan. The device includes a power...
4264890 Blinking signal-light system, especially for a series of emergency-phone stations distributed along the length of a highway, or the like  
A succession of emergency-phone stations distributed along the length of a communications cable laid alongside a highway is powered from a remote central station. The phone stations are provided...
4152696 Multi-function control circuit  
A control system capable of selectively providing one of a plurality of control signals with each signal corresponding to a particular predesignated function. The output signals from the control...
4135144 Traffic light radio control system  
A radio transmitter activated traffic signal control including a radio transmitter carried in the emergency vehicle and activated to transmit a signal to the traffic signal lights at each...
4112615 Remote control system for a movable toy vehicle  
A wireless trans-ceiver control system for a motor driven toy vehicle having a transmitter for generating a predetermined carrier of selected high frequency, and a receiving unit including a super...
4109186 Self-propelled golf cart  
A radio controlled guidance and speed control system for a vehicle has spaced receivers for receiving magnetic energy signals from a movable energy source. The signals received vary in accordance...
4086570 Controlled DC current supply device with open circuit detecting means  
A control system of the type used in process control and comprising a controller which provides a control signal on a signal line, and a DC output circuit for converting the control signal on the...
4045775 Continuous DC control circuit  
A continuous DC control circuit includes a memory capacitor coupled to a sampling means providing an output signal representative of the charge thereon and to a charge and discharge circuit means...
3993991 Device for driving or energizing a display device  
A device for driving or energizing a display device in which an input signal varying stepwise or continuously in amplitude is converted into one or more output signals supplied to the display...
3932714 Remote electrical transmission system  
This device for the remote transmission of a plurality of orders through a single control line or channel is intended more particularly for controlling the firing rates and volley-firing...
3924120 Heater remote control system  
A remote control system including infrared transmission means for coupling control signals simultaneously to remotely located instruments from a central station via either a plurality of modulated...

Matches 1 - 50 out of 229 1 2 3 4 5 >