Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7844656 | Systems, methods and apparatus for factoring numbers Systems, methods and apparatus for factoring numbers are provided. The factoring may be accomplished by creating a factor graph, mapping the factor graph onto an analog processor, initializing the analog processor to an initial state, evolving the analog processor t... | 11/30/2010 |
| 7788312 | Apparatus and method for reducing errors in analog circuits while processing signals A method and apparatus processes signals in a set of analog circuit components of an analog circuit white enforcing a set of explicit constraints corresponding to a set of implicit constraints to reduce errors in output signals. ... | 08/31/2010 |
| 7769798 | Full CMOS min-sum analog iterative decoders Analog iterative decoders are provided that are based on the so-called min-sum algorithm (also referred to as max-sum or max-product, Max-Log-MAP or BP-based decoding) and can be used to decode powerful coding schemes such as low-density parity-check (LDPC) codes an... | 08/03/2010 |
| 7617270 | Method and apparatus for adaptive real-time signal conditioning, processing, analysis, quantification, comparison, and control Various components of the present invention are collectively designated as Adaptive Real-Time Embodiments for Multivariate Investigation of Signals (ARTEMIS). It is a method, processes, and apparatus for measurement and analysis of variables of different type and or... | 11/10/2009 |
| 7613764 | Methods for quantum processing A method for performing a coupling operation between a quantum device and a qubit is provided. The quantum device is coupled to a superconducting bus. The method includes placing a controllable coupling mechanism into a coupled state, thereby coupling the quantum de... | 11/03/2009 |
| 7613765 | Bus architecture for quantum processing A quantum processing apparatus includes a qubit, a superconducting bus, and a controllable coupling mechanism that controllably couples the superconducting bus to the qubit. The controllable coupling mechanism is characterized by a first state in which the supercond... | 11/03/2009 |
| 7610326 | Arithmetic circuit for calculating a cumulative value as a result of parallel arithmetic processing An arithmetic circuit to calculate a cumulative value of results of parallel arithmetic processing, in which the increase of the circuit area for multiple-term arithmetic computation and the degradation of accuracy of holding of computation results in a short time c... | 10/27/2009 |
| 7584238 | Analog circuit system for generating elliptic functions An analog circuit system for generating output signals whose curve shape, at least sectionally, corresponds or is approximate to an elliptic function. Standard analog components such as adders, integrators, multipliers and differential amplifiers can be interconnect... | 09/01/2009 |
| 7546332 | Apparatus and methods for implementation of mathematical functions Apparatus and methods for implementation of mathematical functions apparatus providing both speed and accuracy. Disclosed are specific circuits and methods of operation thereof that may be used for the purpose of implementing an exponential function, a squaring func... | 06/09/2009 |
| 7523154 | Write compensation circuit and signal interpolation circuit of recording device A write compensation circuit of a recording device includes a first delay portion driven by a first driving voltage, for receiving a clock signal, delaying the clock signal by a first delay time, and outputting the delayed clock signal, and a voltage supplying porti... | 04/21/2009 |
| 7464131 | Logical calculation circuit, logical calculation device, and logical calculation method A logical calculation circuit capable of storing data, and performing logical calculations with high reliability and high speeds are provided. The residual polarized state s′ of a load ferroelectric capacitor Cs′ is actively changed so that the residual polarize... | 12/09/2008 |
| 7451174 | Multi-level soft detector-quantizer An analog electronic circuit is proposed that e.g. computes the symbol likelihoods for PAM or QAM signal constellations. The circuit has at least one set of M transistors connected to a common current source. A multiplier/adder generates the voltages to be applied t... | 11/11/2008 |
| 7401108 | Random noise generator and a method for generating random noise A random noise signal generator circuit comprising a random noise source that produces a random noise signal, an amplification circuit that amplifies the random noise signal to produce an amplified random noise signal, a feedback loop having a DC offset correction c... | 07/15/2008 |
| 7336855 | Integration of a waveguide self-electrooptic effect device and a vertically coupled interconnect waveguide A self-electrooptic effect device (“SEED”) is integrated with waveguide interconnects through the use of vertical directional couplers. Light initially propagating in the interconnect waveguide is vertically coupled to the active waveguide layer of the SEED and,... | 02/26/2008 |
| 7332974 | Method and apparatus for steady state analysis of a voltage controlled oscillator A computer-implemented method computes the steady-state and control voltage of a voltage controlled oscillator, given a known frequency or a known period of oscillation of the voltage controlled oscillator. Differential algebraic equations representative of the volt... | 02/19/2008 |
| 7302456 | Stochastic processor and stochastic computer using the same A stochastic processor and a stochastic computer comprises a fluctuation generator configured to generate and output analog quantity having fluctuation comprised of chaos of tent mapping, a mixer configured to output a fluctuation superposed signal with the analog q... | 11/27/2007 |
| 7292069 | Locally asynchronous, block-level synchronous, configurable logic blocks with sub-threshold analog circuits Embodiments utilize analog sub-threshold circuits to perform Boolean logic and soft-gate logic. These analog circuits may be grouped into configurable logic blocks that are locally asynchronous, but block-level synchronous. The Boolean logic, or function, performed ... | 11/06/2007 |
| 7289381 | Programmable boosting and charge neutralization A programmable capacitance circuit including an input node; an output node; and a plurality of capacitance stages. Each of the capacitance stages is coupled to the input node and the output node, and wherein each capacitance stage is configured to be switched into a... | 10/30/2007 |
| 7282716 | Digital imaging assembly and methods thereof A coherent radiation imaging system that produces digital images with a reduced amount of speckle. Radiation from a long coherence length source is used to form an image of a sample. The output coherent wave is temporally divided into a plurality of wavelets. The sp... | 10/16/2007 |
| 7272585 | Operation circuit and operation control method thereof A product-sum operation circuit includes a pulse width/digital conversion circuit (9) which converts a pulse signal having a pulse width representing an operand value into a digital signal, a sorting circuit (4) which outputs, in descending or ascendin... | 09/18/2007 |
| 7259708 | Cyclic pipeline analog to digital converter with enhanced accuracy A cyclic pipeline analog to digital converter includes a sample/hold module, a sub-analog/digital converting module, and an alternate digital/analog converting module. The sample/hold module generates a sample signal according to an analog-input signal and a residue... | 08/21/2007 |
| 7245537 | Nonvolatile memory device and method of programming same A nonvolatile memory device and method of programming the device are disclosed. The nonvolatile memory device is adapted to interrupt or resume a programming operation for a memory cell of the device in response to variation in a programming voltage being supplied t... | 07/17/2007 |
| 7230561 | Programmable integrating ramp generator and method of operating the same A ramp generator for an analog-to-digital converter comprises an array of capacitors each controlled by a switch responsive to one or more control signals and operable to connect/disconnect one or more of the capacitors relative to the array and a current source ope... | 06/12/2007 |
| 7224305 | Analog-to-digital modulation A supplied analog signal is modulated by comparing the supplied analog signal with a noise signal. As a result of each comparison, an output signal is generated having a first value if the supplied analog signal is greater than the noise signal and generating an out... | 05/29/2007 |
| 7221701 | System and method for CDMA communications A system and method for spread spectrum communication primarily for use in mobile CDMA communication systems. The system receiver has simplified architecture, comprising a channel compensator and correlation detector. The channel compensator has a channel estimator ... | 05/22/2007 |
| 7218430 | Combinatorial optical processor A Combinatorial Optical Processor and method for the architecture of optical systems utilizes one or more optical modules, each module including a number of individually addressable optical elements. The optical elements are arranged and addressed in a combinatorial... | 05/15/2007 |
| 7218741 | System and method for adaptive multi-sensor arrays An adaptive differential microphone array method comprises receiving a signal, estimating a measured signal spectral covariance matrix of the signal, and estimating a direction of arrival of the signal based on the measured signal spectral covariance matrix of the s... | 05/15/2007 |
| 7209867 | Analog continuous time statistical processing Methods and apparatus for applications such as signal processing, analysis, and coding/decoding replace digital signal processing elements with analog components. By combining soft logic gates and filters, the functionality of complex finite state machines can be im... | 04/24/2007 |
| 7193467 | Differential amplifiers and methods of using same A differential amplifier and method of using same are disclosed. In one particular exemplary embodiment, the present invention may be realized as a circuit comprising a differential amplifier for receiving a differential input signal and generating a differential ou... | 03/20/2007 |
| 7190834 | Methods for finding and characterizing a deformed pattern in an image A method is disclosed for finding a deformed pattern in an image using a plurality of sub-patterns. By advantageously restricting sub-pattern search ranges, search speed is improved, and the incidence of spurious matches is reduced. The method also quickly decides w... | 03/13/2007 |
| 7155353 | Method for determining charging capacitance of capacitor A method of determining a charging capacitance of a capacitor in an air bag system having an electronic control unit for controlling a gas generator, a bus line having a loop wire extending from the electronic control unit, gas generators connected to the loop wire,... | 12/26/2006 |
| 7130112 | Optical amplifying device The optical amplifying device comprises a DFB laser 22 formed on an n type InP substrate 10, for outputting control light; a symmetrical Mach-Zehnder interferometer 12 formed on the n type InP substrate 10 and including 3 dB optical coupl... | 10/31/2006 |
| 7129458 | Image pickup device, radiation image pickup device and image processing system An image pickup device has a plurality of photoelectric converter substrates carrying respective input/output terminals connected to the photoelectric converters. The device comprises leads connected to the input/output terminals and extending to the side opposite t... | 10/31/2006 |
| 7116339 | Image rendering method using recursive interpolation A parameter setting unit sets a parameter used in a predetermined interpolation calculation. A calculating unit performs the predetermined interpolation calculation based upon an input parameter. A feedback unit feeds back a value obtained through the predetermined ... | 10/03/2006 |
| 7095345 | Hybrid tuning circuit for continuous-time sigma-delta analog-to-digital converter A hybrid tuning circuit is used consisting of a digital finite state machine and an analog tuning circuit to effectively keep the RC product of the continuous time integrator constant across process, temperature, supply, and sampling rate variations. Since the imple... | 08/22/2006 |
| 7092980 | Programming architecture for a programmable analog system A programmable analog device that introduces on a single chip a set of tailored analog blocks and elements that can be configured and reconfigured in different ways to implement a variety of different analog functions. The analog blocks can be electrically coupled t... | 08/15/2006 |
| 7092118 | Progressive image transmission using discrete wavelet transforms Disclosed herein is a method of storing and of progressively transferring a still image so that it can be conveniently previewed during the transfer and so that a user can terminate the transfer at an early stage if the image turns out to be undesirable. The methods... | 08/15/2006 |
| 7076516 | Efficient method of identifying non-solution or non-optimal regions of the domain of a function A method of identifying one or more regions of the domain of a function that do not contain solutions is described along with a related subdivision method. These methods may be employed in the context of branch and bound methods that use interval analysis to search ... | 07/11/2006 |
| 7042273 | Electronic array having nodes and methods An electronic network comprises a plurality of nodes that each comprise a current input and a current output, and at least one transistor arranged as a first current mirror and a second current mirror. The first and the second current mirrors are complementary to ea... | 05/09/2006 |
| 7038187 | Circuit for measuring photo-current level in fiber optic links A fiber optic transceiver or receiver having circuitry for detecting signal strength of a photo-diode therein is disclosed. In one embodiment, the photo-current generated by the photo-diode is provided to a pre-amplifier circuit. The pre-amplifier circuit generates ... | 05/02/2006 |
