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7479791 Circuit arrangement for a capacitive proximity switch  
Disclosed is a charge transfer-based circuit arrangement for capacitive proximity switches comprising a capacitive sensor element (C 3 ), the capacity of which changes according to the actuation...
7479951 Device for controlling touch panel  
Disclosed herein is a device including a differential amplification unit for supplying current to the touch panel; a signal amplification unit for amplifying the output voltage of the differential...
7336120 Circuit and method for boosting output current  
The circuit has an output stage comprising a current source and a current sink. The circuit also has a comparison stage operable to compare a current mirrored from the current source with a current...
7193833 Electric switch  
An electric switch ( 1 ) comprising a capacity sensor circuit ( 2 ) provided with a signal input ( 3 ) arranged to be connected to an actuating line, and which is provided with a relay device ( 4 )...
7091823 Human body detecting device and door locking device  
A human body detecting device includes a door handle provided on an outer panel, a first sensor electrode provided on the obverse side of the door handle, and a second sensor electrode provided on...
7026861 Electronic door latch system with water rejection filtering  
A control circuit receives inputs from first and second field effect sensors. The control circuit produces a control output only if the second field effect sensor senses proximity or touch more...
6798217 Proximity sensor  
A proximity sensor with a sensor head for generating sensor signals is described. The proximity sensor is divided into a fastening portion containing a sensor head, and an electronics portion that...
6791398 Data token with power saving switch  
A data token with extended operational lifetime incorporates operational circuitry requiring D.C. power, a battery for supplying D.C. power to the circuitry, a power switch coupled between the...
6750564 Compact non-contact electrical switch  
A compact non-contact electrical switch for use in an electrical box mounted on a wall has a capacitance sensor for detecting a presence of a hand placed adjacent to the switch and for generating a...
6710629 Impedance comparison integrator circuit  
Disclosed is an impedance comparison integrated circuit. The integrated circuit includes a current mirror part, a discharging part, a differential amplification part and a first output part. The...
6532447 Apparatus and method of controlling a voice controlled operation  
An electronic device, e.g. a mobile telephone, includes speech recognition means for controlling the operation of the device in response to a voice command. The device includes a proximity sensor...
6376939 Sensor apparatus and safety apparatus for protecting approach to machines  
A sensor apparatus and a safety apparatus which can ensure significantly enhanced safety by monitoring constantly whether the sensor apparatus is operating normally. An auxiliary electrode plate of...
6362632 Balanced charge pump capacitive material sensor  
A balanced charge pump sensor circuit (switched capacitor) for measuring the capacitance of a sensor element includes a switching circuit having a charging state during which the sensing element is...
5977662 Electronic switching device and circuits with a plurality of such switching devices  
An electronic proximity switching device with a proximity indicator and with an electronic switch which can be controlled by the proximity indicator. A plurality of these switching devices can be...
5949257 DC level transition detecting circuit for sensor devices  
The DC sensor signal S, on which a low frequency waviness component S1 and a high frequency noise component S2, is obtained by amplitude detecting for a sinusoidal output signal from a touch signal...
5920487 Two dimensional lithographic proximity correction using DRC shape functions  
Integrated circuit designs are continually shrinking in size. Lithographic processes are used to transfer these designs to a semiconductor substrate. These processes typically require that the...
5880538 Capacitive proximity switch circuit  
A capacitive proximity switch which may be used as an actuating device for a variety of control applications, such as windshield wipers and door locks. According to the invention, the actuating...
5783875 Touch sensor circuit  
A touch sensor circuit is disclosed for sensing a person's touch and for switching power to an AC load. The touch sensor circuit includes a sense input circuit, logic circuit, power switching...
5714808 Touch control supply system for an electrical device, method of implementation and applications  
A system for supplying at least one electrical apparatus with a touch control. The system may be utilized in a home automation system for supplying electrical equipment, e.g., light bulbs, motors,...
5453644 Personal-care apparatus comprising a capacitive on/off switch  
A personal-care apparatus comprises a load (LD) and a switch (SW), which load (LD) and which switch (SW) are coupled in series between a first (1) and a second (2) supply terminal for receiving an...
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...
5264783 Contactless magnet-activated proportional controller  
An electrical power controller includes an integrated circuit having a Hall element, a Hall voltage amplifier, a ramp signal generator, and a voltage comparator. The output of the ramp generator is...
5256909 Electronic, preferably zero-contact switch  
In an electronic switch, preferably operating with zero contact, an electronic load switch (3) is controlled by a sensor stage (1), with the switching elements being located in an IC circuit (200)...
5107210 Displacement sensing circuit with coil and band pass filter for attenuating external interference  
A displacement sensing circuit for sensing a displacement of a measured object without any contact with the measured object. A detecting coil is disposed relative to the measured object to be...
5075632 Automatic control using proximity sensors  
Proximity sensor apparatus has at least first and second antenna strips arranged along the edge of a structure. The antenna strips receive signals reflected by an object whose proximity is to be...
5063306 Proximity sensing device  
A proximity sensing device comprising a sensor including a planar capacitor (1) having a central region (1a) and an outer region (1b) separated by a dielectric area, differentiator means (2,3)...
5034621 Inductive proximity switch exhibiting magnetic field immunity  
A proximity switch assembly (10) for signaling the location of a movable member (36) at either of opposite end limits of movement relative to a stationary frame (44, 46) includes a compact elongate...
5019804 Apparatus and method for detecting movement of an object  
A sensor electrode is capacitively coupled to the environment. Electric charges carried by surrounding objects induce corresponding electric charges on the sensor electrode. A high input impedance...
4922227 Touch-controlled switch and alarm system  
A touch-controlled switch and alarm system for protecting electrically conductive objects. The touch switch automatically adjusts itself within a few seconds to a wide range of ungrounded...
4920281 Proximity switch circuit  
The circuit operates a main switch SCR to pass an a.c. supply V through a load L when a metallic object is in proximity to coil L1. Coil L1 is driven by an oscillator comprising transistor T2 and...
4910464 Proximity detector  
A movable door incorporates a proximity detection system for sensing obstructions in the path of the door. The system comprises an array of transmitter/receiver pairs (21, 22 and 23), each pair...
4857842 Temperature compensated hall effect position sensor  
A temperature compensated position sensor which may be used with hydraulic and pneumatic actuators having a magnetic piston and a non-magnetic cylinder is disclosed. The position sensor comprises a...
4857841 Proximity detector employing magneto resistive sensor in the central magnetic field null of a toroidal magnet  
The present invention is a proximity sensor employing a magneto resistive structure. This proximity sensor includes a toroidal magnet having a central aperture, an inner circumference and an outer...
4843259 Process for the non-contacting detection of eddy current-induced bodies, particularly metal objects, as well as to sensors based on the process  
The process for the detection of an eddy current-induced body in the action range of an inductive resonant circuit component (L) uses in place of a continuous operation and detection of the current...
4792764 Noncontact electronic switching arrangement  
A noncontact electronic switching arrangement is provided with an oscillator which can be damped by external objects. In accordance with the invention, the oscillator can be excited externally and...
4764708 Touch control lamp socket interior  
An electronic touch control light socket used to convert a lamp to touch-sensitive use which includes a circuit housing and a light bulb insertion socket mounted thereto which together are adapted...
4758735 DC touch control switch circuit  
A switching circuit includes a source of direct current for operating an oscillator which in turn applies a signal to a detector circuit including a touch plate. The detector includes a voltage...
4731548 Touch control switch circuit  
A touch controlled electronic switching circuit in which the body capacitance of the person actuating the device is coupled in series with current limiting resistors and a capacitor with the...
4679240 Touch sensitive hearing aid volume control circuit  
A touch sensitive electronic volume control circuit so that the gain of an amplifier can be changed to any level from zero to maximum and the gain can be retained for periods of time without user...
4673919 Manual control device  
Improvements in a manual control device wherein an incremental touch key or a decremental touch key is depressed by hand so as to bring a manipulated value and a set value into agreement. The...
4663542 Electronic proximity sensor  
An electronic sensor of the contactless type has a free-running oscillator with internal positive feedback supplemented by an external negative feedback including a capacitive path whose impedance...
4509266 Touch probe  
A touch probe for use in turning centers includes a cylindrical shank portion that allows the probe to be mounted in the same manner as the tools and also provides a compartment for batteries...
4345167 Capacitance proximity sensor  
A method for detecting the change in the capacitance of an antenna caused by the approach of a person to the antenna, including the step of charging said antenna to a predetermined voltage relative...
4336491 Electronic monitoring system stabilized against accidental triggering  
A contactless motion detector, including an oscillator sensitive to an approaching metallic element, includes an electronic switch such as a thyristor triggerable by an output signal from a...
4328433 Proximity switch  
A proximity switch with two connecting wires for switching an alternating current is described. The switch comprises a rectifying circuit, a thyristor connected across the output terminals of the...
4321479 Touch activated controller and method  
A touch activated controller generates UP/DOWN control signals in response to movement of a human finger (or other comparable contact) along a control surface thereof. The UP information is derived...
4316104 Monolithically integrated digital semiconductor circuit  
Monolithically integrated digital semiconductor circuit formed on a semiconductor body and having MIS field-effect transistors and an electric terminal as signal input in the semiconductor body,...
4289980 Touch sensitive electric switch  
An electronic switch has a sensor input responsive to a person's touch. Manual contact is sensed by a CMOS input of a one-shot multivibrator initiating the output which is used to toggle a...
4288786 Touch sensing keyboard construction  
The keys of a keyboard when operated serve as information entry elements by providing an associated output signal related thereto. A first series of conductors is operatively coupled to the keys...
4280580 Proximity detector system for a medical diagnostic device  
A mobile medical diagnostic device having a mobility chassis with two supporting wheels and a central steerable drive wheel. The device has an electrical power steering system controlled by two...
Matches 1 - 50 out of 128 1 2 3 >