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| Patent # | Description |
|---|---|
| US-4,697,184 |
Intrusion detection radar system with amplitude and frequency carrier
modulation to eliminate targets at short... An outdoor microwave transceiver area intrusion detection system includes circuitry for both amplitude and frequency modulation of the microwave carrier signal... |
| US-4,697,183 |
Means for non-contacting signal and energy transmission A noncontacting signal and energy transmission device includes a stationary microstation and a moveable microunit, wherein data is transmitted between the... |
| US-4,697,182 |
Method of and system for accumulating verifiable energy demand data from
remote electricity meters A solid state electricity demand recorder (10) is controlled by a programmable microprocessor (38) to obtain energy demand survey and billing data. The... |
| US-4,697,181 |
System for accumulating verifiable energy demand data from remote
electricity meters A solid state electricity demand recorder (10) is controlled by a programmable microprocessor (38) to obtain energy demand survey and billing data. The... |
| US-4,697,180 |
System for accumulating verifiable energy demand data from remote
electricity meters A solid state electricity demand recorder (10) is controlled by a programmable microprocessor (38) to obtain energy demand survey and billing data. The... |
| US-4,697,179 |
Inductive radio control system for vehicles In an inductive radio control system for a vehicle, data transmission between a vehicle which travels along a predetermined route and a ground operation control... |
| US-4,697,178 |
Computer graphics system for real-time calculation and display of the
perspective view of three-dimensional scenes A computer graphics system and process for displaying three-dimensional scenes as perspective views on the view reference plane of a display device is disclosed... |
| US-4,697,177 |
High resolution dot-matrix character display Resolution of a dot-matrix character display system for a CRT is enhanced by storing two bits for each dot space, thus storing qMxn bits, where M is the number... |
| US-4,697,176 |
Video superimposition system with chroma keying A graphic decoder circuit for a compact disk player has a color signal generator (6) called a color look-up table (CLUT), which outputs RGB video signals stored... |
| US-4,697,175 |
Lightpen control circuit A control circuit for a lightpen of a random scanning computer graphics sem (10) enabling the detection of lightpen interrupts or hits on contiguous vectors... |
| US-4,697,174 |
Ball actuated alarm device There are many instances, specifically supportated offshore platforms, where the initiation of catastrophic tilting should be detected and personnel warned.... |
| US-4,697,173 |
Load sensing alarm condition monitor A monitoring means for apparatus having a number of functional stations, said means comprising a plurality of sensors or groups of sensors located to monitor the... |
| US-4,697,172 |
Fire alarm system A fire alarm system employing multiple sensors can accurately and quickly respond to real fires with an alarm signal and prevent issuance of a false alarm due to... |
| US-4,697,171 |
Electronic lock and key An electronic lock and key includes an electronic key which produces a specific electric signal such as a frequency signal, photo signal or logic signal when... |
| US-4,697,170 |
Method for minimizing false alarms and electronic noise in electronic
article surveillance systems. A method for minimizing false alarms and background electronic noise in an electronic article surveillance system operated in the vicinity of substantially... |
| US-4,697,169 |
Device for detecting and localizing a fault in an aerial rope-way
transport installation A safety line 20 of an aerial ropeway transport installation 10 comprises in one of the stations a safety generating unit 22, which emits a square wave AC signal... |
| US-4,697,168 |
Angle transducer storing an integral number of revolutions' worth of
rotor-pole transition data in memory An angle transducer includes input rotor and reference rotor assemblies that are mounted for rotation upon a common shaft and that cooperate with respective... |
| US-4,697,167 |
Sync pattern encoding system for data sectors written on a storage medium A system and method for generating a unique sync pattern that may be appended to a selected data sector of a disk storage system. The data to be stored in the... |
| US-4,697,166 |
Method and apparatus for coupling transceiver to power line carrier
system A method and apparatus for efficiently coupling a transceiver to an AC power line transmission system. The preferred embodiment of the coupling system comprises... |
| US-4,697,165 |
Ceramic heater and a method of manufacturing the same The cermaic heater includes an elongated plate-like ceramic substrate, a resistance heating element arranged on the ceramic substrate and a pair of conductive... |
| US-4,697,164 |
Incrementally indexing linear actuator An electromagnetic linearly indexing actuator in which a shaft is mounted for linear motion in the direction of its axis. A pair of electromagnetic stator... |
| US-4,697,163 |
Circuit breaker with impact trip delay A circuit breaker having a trip delay mechanism characterized by a variable magnetic air gap that is adjustable to permit time delay at low level overcurrents to... |
| US-4,697,162 |
Variable delay line system This variable delay line system includes a variable delay line which has two output ends and a plurality of signal input points at its intermediate points, a... |
| US-4,697,161 |
Directional couplers of the branchline type A directional coupler of the 3 DB and 90 degree branchline type with four ports. Four pairs of coupled lines of microstrip construction provide the connections... |
| US-4,697,160 |
Hybrid power combiner and amplitude controller A hybrid power combiner and controller device is disclosed. The device includes a multiple branch hybrid network, with PIN diodes employed to selectively short... |
| US-4,697,159 |
Tuning capacitors with selectable capacitance configurations for
coupling between microwave circuits A tuning capacitor arrangement for a microwave circuit including, on a substrate, first and second conductors to be capacitively joined. The tuning capacitor... |
| US-4,697,158 |
Reduced height waveguide circulator A conductive waveguide structure has a central cavity of full height and input/output ports of a second reduced height emanating therefrom. A smaller ferrite... |
| US-4,697,157 |
Inherently flat spectral density pseudorandom noise generator A pseudorandom noise generator (10) is disclosed which includes a maximum length sequence generator (13) for providing a digital signal having a pseudorandom... |
| US-4,697,156 |
Digitally controlled variable frequency synthesizer In a generator whose frequency can be set digitally and connected in a phase-locked loop (PLL) with a frequency divider whose frequency divider ratio is... |
| US-4,697,155 |
High voltage amplifier An integrated high voltage amplifier output stage capable of being manufactured using low voltage processes comprises a plurality of low-voltage amplifying means... |
| US-4,697,154 |
Semiconductor integrated circuit having improved load drive
characteristics The semiconductor integrated circuit includes a first power supply terminal and a second power supply terminal; a first transistor and a second transistor having... |
| US-4,697,153 |
Cascode auto bias circuit A MOS cascode operational amplifier stage includes a bias circuit in which one of the bias transistors is operated in its triode region while a second MOS... |
| US-4,697,152 |
Fully differential switched capacitor amplifier having autozeroed
common-mode feedback A fully differential amplifier which is compensated for both input offset voltage error and output common-mode variation is provided. The differential amplifier... |
| US-4,697,151 |
Method and apparatus for testing operational amplifier leakage current A circuit for measuring the leakage current of an electrometer amplifier 10 determines the leakage currents at both amplifier input terminals simultaneously by a... |
| US-4,697,150 |
Two electrode well logging system for measuring resistivity of
subsurface formations A well logging instrument for measuring the resistivity of relatively thin formation beds. A well logging instrument includes an elongated body member, serving... |
| US-4,697,149 |
NMR flow imaging using a composite excitation field and magnetic field
gradient sequence An NMR zeugmatographic scanner is modified to provide motion images, During each measurement cycle the paramagnetic nuclei are subjected to a pair of transverse... |
| US-4,697,148 |
Process for the excitation of a sample for NMR tomography The use of longer 180.degree. pulse sequences for the generation of spin echos is made possible according to the invention during NMR tomography using the... |
| US-4,697,147 |
Blood flow imaging using a CW NMR technique An NMR blood flowmeter applies a continuous transverse excitation signal and a constant, homogeneous polarizing magnetic field to blood flowing through an active... |
| US-4,697,146 |
Spherical shell fibre optic magnetic field sensors and magnetometers and
magnetic gradient detectors... A magnetic field sensor is comprised by a length of magnetically sensitized single mode optical fibre wound in substantially random directions on a sphere of... |
| US-4,697,145 |
Measuring system and measuring cell for making magnetic field
measurements A process and apparatus for measuring a magnetic field based on the Faraday effect rotation of a light beam passing through a ferrimagnetic coating subject to a... |
| US-4,697,144 |
Position sensing apparatus Position sensing apparatus in which an unenergized member, such as a ferrite (60), moves relative to an energized primary coil system (12) and a secondary coil... |
| US-4,697,143 |
Wafer probe A wafer probe is provided having metallic transmission lines mounted on a tapered alumina substrate generally surrounded by microwave absorbing material. The... |
| US-4,697,142 |
Printed circuit conductor test system A system for testing conductor lines in a printed circuit board includes circuitry for the burning out of constricted regions of the printed circuit lines so as... |
| US-4,697,141 |
Testing of RF diode phase shifters Proper operation of an RF diode digital phase shifter of the kind having a number of logic inputs to effect corresponding incremental shifts in the phase of an... |
| US-4,697,140 |
Semiconductor integrated circuit having a test circuit for testing an
internal circuit A semiconductor integrated circuit formed on a chip comprises an internal circuit and an oscillating circuit, the latter generating a fundamental clock signal... |
| US-4,697,139 |
Logic circuit having testability for defective via contacts An integrated circuit having improved testability for defects includes a group of logic gates having respective input terminals and output terminals; a conductor... |
| US-4,697,138 |
Logic analyzer having a plurality of sampling channels A logic analyzer includes a plurality of data sampling channels which are operative in response to respective different clock signals independent of one another.... |
| US-4,697,137 |
Method of nondestructively establishing an earth gradient for cable
fault locating A fault is located in an insulated electrical conductor buried in earth by establishing a voltage gradient through the earth emanating from the fault, and... |
| US-4,697,136 |
Inverter system for inputting alternating current and direct current in
combination An inverter system is disclosed for inputting an alternating current and a direct current in combination. This inverter system comprises an AC-DC converter to... |
| US-4,697,135 |
Electronic voltage regulator An electronic voltage regulator for an ac electric generator precisely controls the generator output voltage and enhances motor starting ability. A filtered dc... |
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