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| Patent # | Description |
|---|---|
| US-5,537,078 |
Operational amplifier with JFET inputs having low input bias current and
methods for using same This invention relates to operational amplifiers (opamps) which use junction field effect transistors (JFETs) for the differential input pair to achieve a low... |
| US-5,537,077 |
Power supply dependent method of controlling a charge pump A supply voltage detect circuit is described which generates a control signal indicating the status of VCC to be at 5.0 or 3.3 volts. This control signal is used... |
| US-5,537,076 |
Negative resistance circuit and inverter circuit including the same A new negative resistance circuit comprises a first N-channel enhancement FET (E-FET), an N-channel depletion FET as a load element connected to the first... |
| US-5,537,075 |
Semiconductor integrated circuit having isolated supply paths for
circuit blocks Circuit blocks to which reference clock signals with different frequencies are input can be fabricated on the same substrate. A supply path of a supply voltage... |
| US-5,537,074 |
Power semiconductor packaging Power output switching circuit (215) for use in high current and high frequency applications. The output circuit provides a series of geometrically symmetric... |
| US-5,537,073 |
Circuitry and method for clamping a boost signal A clamping circuit clamping a boost signal supplied on a boost line includes a p-channel, MOS transistor and an n-channel MOS transistor. These MOS transistors... |
| US-5,537,072 |
Charge pump switch circuits A switch circuit for a charge pump circuit is disclosed. The switch circuit has a first transistor for conducting current and is controlled by a second, third,... |
| US-5,537,071 |
Method and circuit for dividing an input signal into amplitude segment
signals and for non-linearly processing... A non-linear circuit having a transfer characteristic which is adjustable per amplitude segment of an input signal (Yi) includes a segmenting circuit (11 . . .... |
| US-5,537,070 |
Output driver with slew rate control An output driver for use with low voltage level, high speed data transmission busses. An open drain output transistor has a controlled slew rate for a high to... |
| US-5,537,069 |
Apparatus and method for selecting a tap range in a digital delay line The invention is a delay locked loop circuit comprising a delay line with an input signal and a plurality of tap outputs, and a selector to select from a range... |
| US-5,537,068 |
Differential delay line clock generator An on-chip clock waveform generator for generating from an externally supplied clock (EFI) an on-chip (internal) clock with a 50% duty cycle having a clock rate... |
| US-5,537,067 |
Signal driver circuit operable to control signal rise and fall times A signal driver circuit (10) is provided that comprises a first inverter comprising a P-FET (14), an N-FET (16) and a resistor (18). A second inverter comprises... |
| US-5,537,066 |
Flip-flop type amplifier circuit A flip-flop type amplifier circuit is adapted to amplify a voltage difference between a first voltage and a second voltage. This amplifier circuit includes a... |
| US-5,537,065 |
Programmable voltage detection system A system and method for detecting the voltage level of a power supply signal and generating a notification signal to indicate when the supply voltage exceeds a... |
| US-5,537,064 |
Logic circuit capable of handling large input current A protection circuit for a semiconductor switch for switching a load is disclosed. Control circuitry is used for switching the semiconductor switch on in... |
| US-5,537,063 |
CMOS logic circuit with plural inputs There is provided a CMOS logic circuit designed in a manner to have preference to either operation speed or power consumption. This CMOS logic circuit comprises... |
| US-5,537,062 |
Glitch-free clock enable circuit A circuit utilizes a toggle flip-flop, a D flip-flop and combinatorial logic to generate a clock signal which can be enabled or disabled without creating spikes... |
| US-5,537,061 |
Semiconductor integrated circuit having signal paths with equal
propagation delays A semiconductor integrated circuit has a parallel conductor transmission line including a plurality of signal paths branching at a node. The signal paths have... |
| US-5,537,060 |
Output buffer circuit for memory device An output buffer circuit for a memory device comprising a pull-up path including first and second PMOS transistors for forming two parallel charging paths, and a... |
| US-5,537,059 |
Output circuit of semiconductor integrated circuit device An output circuit of a semiconductor integrated circuit device is obtained which can externally produce a signal lager in amplitude than an internal signal... |
| US-5,537,058 |
Semiconductor device having high speed input circuit In a semiconductor device, an input voltage is applied to a gate of a first MIS transistor of a first conductivity type and gates of second and third MIS... |
| US-5,537,057 |
Programmable logic array device with grouped logic regions and three
types of conductors A programmable logic array device in which programmable logic regions are arranged in groups of four is provided. The device includes direct connect conductors... |
| US-5,537,056 |
Antifuse-based FPGA architecture without high-voltage isolation
transistors A programmable interface for selectively making connections between an output node of a logic module and an interconnection array in a field programmable gate... |
| US-5,537,055 |
Method for protecting an ASIC by resetting it after a predetermined time
period A design protection circuit for a logic circuit comprised of a counter for receiving clock pulses with the logic circuit and apparatus for resetting the logic... |
| US-5,537,054 |
Method for testing an on-off function of semiconductor devices which
have an isolated terminal A testing method is provided for a semiconductor device which includes a control terminal and a pair of main terminals wherein one of the main terminals is... |
| US-5,537,053 |
Data output impedance control The present invention provides an apparatus and method for monitoring the functioning of a special operational mode on an integrated circuit module without the... |
| US-5,537,052 |
System and method for executing on board diagnostics and maintaining an
event history on a circuit board A system and method for executing on board diagnostics in connection with automated test hardware and maintaining an event history on a circuit board having a... |
| US-5,537,051 |
Apparatus for testing integrated circuits A method and apparatus for testing integrated circuits by connecting a plurality of leads (25) of a device (10) to a test board (50). The test fixture (32)... |
| US-5,537,050 |
Process for inspecting electrodes using rotation alignment correction A process for inspecting an electrode plate having plural electrodes. The process includes the first step of using a rough alignment between the plate to be... |
| US-5,537,049 |
Temperature compensating circuit A thermistor network for a low temperature component of a temperature compensating circuit includes a series resistor-capacitor combination in parallel with a... |
| US-5,537,048 |
Sensing roller for in-process thickness measurement An apparatus and method for processing materials by sensing roller, in which the sensing roller has a plurality of conductive rings (electrodes) separated by... |
| US-5,537,047 |
Video noise analyzer A noise analyzer apparatus for a video signal produced by an X-ray imaging system corresponding to an image generates, in response to vertical and horizontal... |
| US-5,537,046 |
Electronic calibration method and apparatus A multistate electronic transfer standard provides electronic conditions to at least one of two ports of a vector network analyzer. One embodiment of the... |
| US-5,537,045 |
Detection and location system for monitoring changes in resistivity in
three dimensions A method and apparatus is provided for monitoring and locating the presence of fluids leaking from a containment vessel. A multiplicity of probes having... |
| US-5,537,044 |
Surge voltage generator for pulsing grounded and ungrounded electrical
equipment A coupling circuit receives a high voltage surge wave and injects it into e or more power lines of a single-phase or three-phase power supply circuit, either... |
| US-5,537,043 |
Method for monitoring cracks and critical concentration by using phase
angle A method for monitoring cracks in a sample of materials by applying the theory that the phase angle increases in the sample of materials being tested where... |
| US-5,537,042 |
Method and system for unobtrusively measuring physical properties in
electrochemical processes Disclosed is a method and system for unobtrusively measuring physical properties in electrochemical processes occurring in a predefined volume, such as the state... |
| US-5,537,041 |
Discriminating time domain conducting metal detector utilizing
multi-period rectangular transmitted pulses This invention is for a method of an apparatus to perform metal discriminatory detection comprising the application of a multi period rectangular wave form to a... |
| US-5,537,040 |
Apparatus and method for magnetic resonance imaging using pre-polarizing
field In an apparatus and method for magnetic resonance imaging, an imaging field (B.sub.p) and a pre-polarization field (B.sub.p) are generated by means of ... |
| US-5,537,039 |
Virtual frequency encoding of acquired NMR image data Slabs are selected using a combination of a slab select gradient and selective RF excitation pulses to acquire 3D NMR data. Thinner 2D slices are selected within... |
| US-5,537,038 |
Magnetic flux measuring method and apparatus for detecting high
frequency components of magnetic flux with high... A current of predetermined frequency is fed to a coil wound around a ferromagnetic core through a fixed impedance means. A magnetic flux measurement is performed... |
| US-5,537,037 |
Apparatus with cancel coil assembly for cancelling a field parallel to
an axial direction to the plural coils... A nondestructive inspecting apparatus is arranged to have an exciting magnet for applying an ac magnetic field to a sample and a SQUID for converting change of a... |
| US-5,537,036 |
High-frequency magnetic property measuring apparatus with wound
plane-shaped conductors for measuring soft... A high frequency magnetic property measuring apparatus for soft magnetic film includes a magnetic detection device for detecting the intensity of magnetization... |
| US-5,537,035 |
Apparatus and method for detecting anomalies in ferrous pipe structures An apparatus and method for detecting anomalies in ferrous pipe structures is presented. A sensor having one or more sensor shoe members is placed in the... |
| US-5,537,034 |
Method for mapping thermal asperities of a magnetic recording surface in
data storage device In a disk drive, the tendency of a flying head to physically engage a constant-speed data recording disk when the drive is operated at an altitude higher than... |
| US-5,537,033 |
Protectively coated position sensor the coating and process for coating A spring of a position sensor is coated with a coating which consists of diglycidyl ether of bisphenol A, polysebacice polyanhydride and polytetrafluoroethylene... |
| US-5,537,032 |
Shape coupled wheel speed sensor A wheel speed sensing device with shape-coupled sensor and exciter ring components reduces the effects of tolerance stack variances in the relative radial and... |
| US-5,537,031 |
Integrated circuit test jig Test jig apparatus for testing an integrated circuit chip that suppresses build-up and subsequent discharge of electrical charge on the test jig apparatus or on... |
| US-5,537,030 |
Voltage regulator test set for the power distribution industry A portable test set for testing the voltage regulators used by utilities in the power distribution industry for regulating a voltage level of electrical power... |
| US-5,537,029 |
Method and apparatus for electronic meter testing Methods and apparatus for electronically displaying metered electrical energy are disclosed. A first processor receives voltage and current signals, determines... |
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