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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7317345 | Anti-gate leakage programmable capacitor An anti-gate leakage programmable capacitor including at least one capacitor having a first terminal coupled to a first node and a second terminal, a second node, and a control circuit which selectively couples the second terminal of the capacitor to the second node... | 01/08/2008 |
| 7309978 | Reference voltage generating circuit with ultra-low power consumption A reference voltage generating circuit with ultra-low power consumption, which includes: a constant current circuit part generating a first constant current from a supply voltage; a current mirror circuit part mirroring the constant current and supplying a second co... | 12/18/2007 |
| 7203794 | Destructive-read random access memory system buffered with destructive-read memory cache A memory storage system includes a plurality of memory storage banks and a cache in communication therewith. Both the plurality of memory storage banks and the cache further include destructive read memory storage elements configured for delayed write back schedulin... | 04/10/2007 |
| 7112947 | Bandgap reference current source Bandgap reference current source for generating a reference current (IREF) having: at least two bipolar transistors (T1, T2), the base terminals (B1, B2) of which are interconnected and connected to a fixed refe... | 09/26/2006 |
| 7095227 | Superconducting driver circuit To obtain a superconducting driver circuit which can obtain an output voltage of several millvolts or above, can use a DC power source as a driving power source, can form no capacitance between it and a ground plane, and has a small occupation area, the superconduct... | 08/22/2006 |
| 7052179 | Temperature detector An integrated temperature sensor having a first PNP-type bipolar transistor diode-connected between a first terminal and a second terminal of the sensor intended to be connected to a reference supply rail; a resistive element and a second diode-connected PNP-type bi... | 05/30/2006 |
| 6960929 | Superconductive crossbar switch A superconductor crossbar switch for connecting a plurality of inputs with a plurality of outputs, including a switching cell having an input, an output and a circuit for connecting the input with the output for bidirectionally transmitting data therebetween. The co... | 11/01/2005 |
| 6948028 | Destructive-read random access memory system buffered with destructive-read memory cache A memory storage system is disclosed. In an exemplary embodiment, the memory storage system includes a plurality of memory storage banks and a cache in communication therewith. Both the plurality of memory storage banks and the cache further include destructive read... | 09/20/2005 |
| 6815949 | Apparatus for measuring a magnetic field An apparatus can detect a magnetic field with a high sensitivity using an ordinary-temperature pickup coil even when the pickup coil is arranged outside a cryostat. Specifically, the apparatus for measuring a magnetic field includes a pickup coil for detecting an ex... | 11/09/2004 |
| 6448767 | Fast flux locked loop A flux locked loop for providing an electrical feedback signal, the flux locked loop employing radio-frequency components and technology to extend the flux modulation frequency and tracking loop bandwidth. The flux locked loop of the present invention has... | 09/10/2002 |
| 6339526 | Low voltage cutoff circuit with short circuit detection capability and method of operation thereof A low voltage cutoff circuit, a method of operating the same and a battery backup system incorporating the low voltage cutoff circuit or the method. In one embodiment, the low voltage cutoff circuit includes: (1) a low voltage monitor coupled between an i... | 01/15/2002 |
| 6259309 | Method and apparatus for the replacement of non-operational metal lines in DRAMS A semiconductor integrated circuit device including a redundant metal line for replacing a non-operational metal line for connecting to a circuit block. The invention further includes a method for decoupling a defective or otherwise non-operational conduc... | 07/10/2001 |
| 6225800 | Arrangement for coupling an RF-squid magnetometer to a superconductive tank circuit An arrangement for coupling an rf-SQUID magnetometer to a superconductive tank circuit on a substrate is constructed in such a way that the two components are fully integrated into each other. Such integration increases the quality of the tank circuit by ... | 05/01/2001 |
| 6066948 | Squid magnetometer having resistor-capacitor damping circuits A SQUID magnetometer for low noise, stable measurement of magnetic fields. The magnetometer has a SQUID formed of two Josephson junctions connected in parallel in a superconducting ring. An external damping impedance is connected across the Josephson junc... | 05/23/2000 |
| 5952833 | Programmable voltage divider and method for testing the impedance of a programmable element A programmable voltage divider has normal and test modes of operation. The divider includes first and second supply nodes, a divider node that provides a data value, and a first divider element that is coupled between the first supply node and the divider... | 09/14/1999 |
| 5900730 | Magnetometer using two squids A magnetometer using a plurality of superconducting quantum interference devices (SQUIDs) includes a detecting part composed of a plurality of SQUIDs each detecting external magnetic flux, converting the detected external flux into a voltage value, and ou... | 05/04/1999 |
| 5880647 | High frequency signal generator using superconducting quantum interference device A high frequency signal generator using a superconducting quantum interference device is disclosed including: a magnetic signal generator for supplying a low frequency magnetic signal to a superconducting quantum interference device; a first filter for se... | 03/09/1999 |
| 5867024 | RF-squid with an integrated lambda-microwave resonator useful as highly sensitive magnetometer An RF-SQUID magnetometer whose RF-SQUID has an operating frequency, is formed by a superconductive ring having a Josephson element. An electric resonant circuit in the form of a closed superconductive conductor is coupled with the ring and forms a superco... | 02/02/1999 |
| 5818373 | Interface between superconductor and semiconductor electronic circuits using phase-shift keying coded output data format Disclosed herein are circuits and methods for receiving SFQ data pulses from a superconductor signal source, and first and second clock pulses that are substantially equal in frequency but opposite in phase from clock signal sources, and for encoding and ... | 10/06/1998 |
| 5757243 | High frequency system including a superconductive device and temperature controlling apparatus An effective high frequency oscillator is made of a plurality of Josephson devices. A high frequency converter as a high frequency circuit is made of the high frequency oscillator, nonlinear superconductor devices, and transmission line. Josephson devices... | 05/26/1998 |
| 5732343 | Microwave harmonic mixer circuit of super conducting quantum interference device Microwave harmonic mixer circuit of SQUID(Superconducting Quantum Interference Device) is disclosed, in which a magnetic flux to voltage conversion characteristics of SQUID is used for generating a higher harmonics from an LO(Local Oscillator) signal, and... | 03/24/1998 |
| 5668472 | Multichannel flux measuring apparatus having function for compensating interference due to crosstalk Flux of magnetic field generated from an object P of magnetic measurement, which links with the pick-up coils of the fluxmeters, where the flux is converted into electrical signals by each of the SQUID chips driven by the FLL circuits. The electrical sign... | 09/16/1997 |
| 5635834 | SQUID detector with flux feedback coil sized and located to produce uniform feedback flux A high temperature Tc SQUID chip magnetometer has a flux-locked loop circuit including an independent feedback coil having an internal diameter greater than the maximum SQUID chip dimension. The feedback coil is mounted in close co-axial proxim... | 06/03/1997 |
| 5619159 | Signal processing device and a method for transmitting signal A signal processing device comprises superconducting wiring for providing an output signal or a transmitted signal correctly corresponding to an input signal without increasing the temperature of the device. The signal processing device has a signal input... | 04/08/1997 |
| 5545932 | Superconducting switch and application to a charger for a superconducting coil A superconducting switch comprising a portion of cable including a resistive central strand that is non-superconducting having a plurality of super-conducting strands or of superconductors twisted thereabout, and separated from the central strand by elect... | 08/13/1996 |
| 5532592 | Squid control apparatus with non-cryogenic flux-locked loop disposed in close proximity to the squid SQUID control apparatus for controlling multiple SQUID probes includes a plurality of head units each corresponding to a respective SQUID probe, each of the head units including a non-cryogenic modulated flux-locked loop feedback circuit operating at a re... | 07/02/1996 |
| 5523686 | Probes for scanning SQUID magnetometers Improved probes for miniaturized scanning magnetometers (scanning microscopes), particularly those utilizing superconducting quantum interference devices (SQUIDs), are provided by the invention. The improved probes can have sub-μm2 effective p... | 06/04/1996 |
| 5469057 | Method and apparatus for extending the dynamic range of DC-squid measurements using a flux tracking loop A SQUID system provides for tracking small input signals to a SQUID. A digital flux tracking loop provides for independently providing orthogonal error signal for signal and modulation feedback errors effective to form a flux tracking loop with the SQUID.... | 11/21/1995 |
| 5453690 | Squid magnetometer in which feedback current for a squid flux-locked-loop is conductively coupled into the input circuit of the squid The feedback current for the flux-locked-loop of a DC-SQUID is conductively supplied directly to the input circuit of the SQUID rather than to a separate feedback or modulation coil that is inductively coupled to the SQUID, thereby eliminating the feedbac... | 09/26/1995 |
| 5434530 | Superconducting semiconducting cross-bar circuit A hybrid superconducting-semiconducting field effect transistor-like circuit element comprised of a superconducting field effect transistor and a closely associated cryogenic semiconductor inverter for providing signal gain is described. The hybrid circui... | 07/18/1995 |
| 5387864 | Channel equalized DC squid flux-locked loop A DC superconductor quantum interference device (i.e. DC SQUID) is used in a flux-locked loop as a sensitive detector of magnetic flux. Prior art devices of this sort had a transfer function which was frequency-limited by the transfer function of impedanc... | 02/07/1995 |
| 5378949 | Signal mixing device utilizing a superconducting strip line with superconducting weak links and two control lines The present invention is a superconducting flux flow mixer which has two control lines. Preferably, the mixer comprises a grounded superconducting signal line wherein portions of the superconducting signal line are etched away to form superconducting weak... | 01/03/1995 |
| 5376626 | Magnetic field operated superconductor switch A superconducting switch is composed of anisotropic magnetic material. The switch has a first superconducting section, a variable resistive section and a second superconducting section. An external magnetic field is applied so that the first and second su... | 12/27/1994 |
| 5365476 | Three-port Josephson memory cell for superconducting digital computer A three-port Josephson memory cell has one input port (a data line) and two output ports (first and second sense lines). The memory cell receives a write enable pulse on a write line to store a bit of data from the data line as circulating supercurrent. T... | 11/15/1994 |
| 5355275 | Current limiting device for electromagnetic coil employing gap containing superconductive shield A variable impedance device comprises a coil (10) and an associated magnetic circuit (16) having a gap receiving a plate (20) of superconducting material which acts as a shield or barrier so that, while the plate (20) is in its superconducting state, magn... | 10/11/1994 |
| 5355085 | Multichannel SQUID flux meter having multiplexed SQUID flux sensors A plurality of SQUID flux sensors are supplied with their respective bias currents at the same time from a bias source. A superconducting multiplexer multiplexes output signals of the SQUID flux sensors during an interval of time when the bias currents ar... | 10/11/1994 |
| 5352978 | Apparatus for sensing a magnetic field with a superconductive material An apparatus of sensing a magnetic field using a ceramic superconductor magneto-resistive element having a superconductor magneto resistive effect of non linear characteristic against the applied magnetic field, there is provided a coil for applying a bia... | 10/04/1994 |
| 5347168 | Cryogenic electronics power supply and power sink A cryogenically cooled circuit, operating at temperatures at which inductors windings of the circuit exhibit superconducting characteristics, provides unique advantages in high performance, preferably high power circuits. The entire circuit, as opposed to... | 09/13/1994 |
| 5345115 | Superconducting input interface circuit for superconducting circuit A superconducting interface circuit converting a signal sent from a normal conducting circuit into a small voltage swing signal suitable for a superconducting circuit includes a superconducting field effect device. The superconducting field effect device ... | 09/06/1994 |
| 5343147 | Method and apparatus for using stochastic excitation and a superconducting quantum interference device (SAUID) to perform wideband frequency response measurements A stochastic excitation, SQUID detection system for determining the frequency response of a sample. A pair of counterwound detection coils are adjacent to an excitation coil. The sample is selectively placed in one of the detection coils for taking measur... | 08/30/1994 |
