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AMI Semiconductor, Inc. Patents
Assignee:
AMI Semiconductor, Inc.
Address:
Pocatello, ID
No. of patents:
60
Patents:


1 2










Patent Number Title Of Patent Date Issued
7706902 Method and system for data logging in a listening device April 27, 2010
A method and system for data logging in a listening device is provided. The system includes a digital signal processing (DSP) entity, which performs normal hearing aid audio and system processing, a level translating module, and a non-volatile (NV) memory. The NV memory is used to st
7693294 Method and system for reducing audible side effects of dynamic current consumption April 6, 2010
A method and system for reducing audible side effects of dynamic current consumption is provided. The system includes an audio subsystem, and a plurality of digital subsystems. The audio subsystem and the digital subsystem are powered by a common power supply. T he digital subsystem
7692568 Low power sigma delta modulator with successive approximation converter April 6, 2010
A low power analog-to-digital channel includes a decimation filter coupled to a sigma-delta modulator. Various embodiments include a decimation filter including an output and a sigma-delta modulator coupled to the output of the decimation filter, where a clock frequency applied to the
7672462 Method and system for acoustic shock protection March 2, 2010
An acoustic shock protection method and device are provided. A pattern analysis-based approach is taken to an input signal to perform feature extraction. A parameter space is identified, which is corresponding to the signal space of the input signal. A rule-based decision approach is
7558390 Listening device July 7, 2009
A method for equalizing output signals from a plurality of signal paths is disclosed. The method comprises steps of identifying a transfer function for each of signal paths, determining a filtering function for each signal path such that a product of the transfer function, and the fi
7489790 Digital automatic gain control February 10, 2009
Systems, devices, and methods are provided to inhibit apparent amplitude modulation in non-linear processing that causes distortion in a processed signal. One aspect of the invention includes a hearing aid. The hearing aid includes a microphone to receive an input signal, a speaker to
7398173 Providing nonlinear temperature compensation for sensing means by use of Pade approximant functi July 8, 2008
Sensors and/or transducers can exhibit nonlinear response to temperature changes in terms of offset and also in terms of sensitivity to variations in a sensed physical attribute (pressure, strain, displacement, etc.). Pade Approximant function emulators are used to model the nonlinear
7378858 Pade approximant based compensation for integrated sensor modules and the like May 27, 2008
Methods and systems using Pade' Approximant expansion ratios provide mappings between nonlinear sensors and a more linearized output domain. In one embodiment (a) a variable gain amplifier receives a supplied input signal, the amplifier has at least a first input terminal, an output
7342985 Delay locked loop with fixed angle de-skew, quick start and low jitter March 11, 2008
Digital delay locked loops which generate fixed angle delayed (e.g., quadrature) clock signals based on a reference clock signal and that accounts for clock signal delay. The number of quadrature delay elements is calculated based on the number of delay elements needed to provide one
7337425 Structured ASIC device with configurable die size and selectable embedded functions February 26, 2008
One embodiment of the present invention provides for a master or universal base and base tooling which addresses the general purpose Structured ASIC requirements. Another embodiment of the present invention provides for a common set of base tooling from which the master/universal base is
7279757 Double-sided extended drain field effect transistor October 9, 2007
A double-sided extended drain field effect transistor that includes a gate terminal overlying a channel region in a substrate. The substrate includes a drain region of a first carrier type that is laterally separated from the channel region by a first RESURF region of the first carri
7218154 Track and hold circuit with operating point sensitive current mode based offset compensation May 15, 2007
A track and hold (or sample and hold) offset compensated amplifier circuit that performs offset compensation in response to a comparison of sign (or sign and value) of the current forced to the output terminal of operational amplifier in order to keep it at the potential of holding c
7215156 Differential signal driver having complimentary and current-aided pre-emphasis May 8, 2007
A differential voltage signal (LVDS) driver circuit and/or a Current Mode Logic (CML) driver circuit. The circuit includes two current switches, each coupled to a corresponding input node. In a complementary manner, when a differential signal is applied across the input nodes, one curren
7197091 Direct conversion receiver with direct current offset correction circuitry March 27, 2007
A direct conversion circuit that includes an in-phase and quadrature-phase feedback path that reduces Direct Current (DC) offset. Each feedback path includes a compensating mixer that generates an error correction voltage that is passed through a loop gain circuit and an integrator. The
7190178 Pade' Approximant based compensation for integrated sensor modules and the like March 13, 2007
Methods and systems using Pade' Approximant expansion ratios provide mappings between nonlinear sensors and a more linearized output domain. In one embodiment (a) a variable gain amplifier receives a supplied input signal, the amplifier has at least a first input terminal, an output
7142144 Low power sigma delta modulator November 28, 2006
A low power analog-to-digital channel includes a decimation filter coupled to a sigma-delta modulator. Various embodiments include a decimation filter including an output and a sigma-delta modulator coupled to the output of the decimation filter, where a clock frequency applied to the
7141503 Methods for manufacturing a soft error and defect resistant pre-metal dielectric layer November 28, 2006
A method for forming a pre-metallization layer on an underlying micro-structure, and a corresponding micro-structure formed by the method. The micro-structure may be a semiconductor circuit and/or a Micro-Electro-Mechanical Systems (MEMS) device. A first layer of undoped silicate gla
7139546 Up-conversion of a down-converted baseband signal in a direct conversion architecture without th November 21, 2006
A direct conversion circuit that not only down-converts the received modulated signal using a down-converting mixer into a baseband signal, but also, after performing a passive low pass filtering to remove higher-order components, performs up-conversion of the baseband signal using a
7139403 Hearing aid with digital compression recapture November 21, 2006
Systems, devices, and methods are provided to inhibit apparent amplitude modulation in non-linear processing that causes distortion in a processed signal. One aspect of the invention includes a hearing aid. The hearing aid includes a microphone to receive an input signal, a speaker to
7120584 Method and system for real time audio synthesis October 10, 2006
A method and system for synthesizing audio speech is provided. A synthesis engine receives from a host, compressed and normalized speech units and prosodic information. The synthesis engine decompresses data and synthesizes audio signals. The synthesis engine can be implemented on a
7113760 Direct conversion receiver for amplitude modulated signals using linear/log filtering September 26, 2006
A receiver circuit that includes a direct conversion receiver that receives a modulated signal, and generates an in-phase differential signal and a quadrature-phase differential signal. The receiver circuit includes an in-phase branch that processes the in-phase differential signal,
7110554 Sub-band adaptive signal processing in an oversampled filterbank September 19, 2006
An adaptive signal processing system for improving a quality of a signal. The system includes an analysis filterbank for transforming a primary information signal in time domain into oversampled sub-band primary signals in frequency domain and an analysis filterbank for transforming a
7106039 Closed loop direct current to direct current converter that does not require voltage reference September 12, 2006
A closed loop DC-to-DC converter circuit that includes an open loop DC-to-DC converter circuit configured to provide charge on its output terminal. A voltage-controlled inverse-resistance component is coupled to the output terminal of the open loop DC-to-DC converter circuit, such th
7102188 High reliability electrically erasable and programmable read-only memory (EEPROM) September 5, 2006
An EEPROM cell that combines a FET transistor and a capacitor. The transistor has a well that is shared by potentially all of the EEPROM cells in the array thereby reducing size. A gate terminal is formed over the well. Source and drain terminals are formed in the well. The well is i
7064609 High voltage, low-offset operational amplifier with rail-to-rail common mode input range in a di June 20, 2006
An operational amplifier with two differential pairs coupled to different current sources. The gate terminals of the transistors in the first differential pair are used as input terminals providing common mode input for most of the rail-to-rail voltage. The bulk terminals of the tran
7057148 Optical tracking sensor method June 6, 2006
The present invention is a method of optical tracking sensing using block matching to determine relative motion. The method includes three distinct means of compensating for non-uniform illumination: (1) a one-time calibration technique, (2) a real-time adaptive calibration technique,
7050966 Sound intelligibility enhancement using a psychoacoustic model and an oversampled filterbank May 23, 2006
A system and method of improving signal intelligibility over an interference signal is provided. The system includes a psychoacoustic professor having a psychoacoustic model wherein the level of a signal-of-interest is improved so as to be audible above noise and so as not to exceed
7034597 Dynamic phase alignment of a clock and data signal using an adjustable clock delay line April 25, 2006
A dynamic phase adjustment circuit that includes a multi-tap delay line that receives a clock input signal. The multi-tap delay line includes an initial portion that is adjustable, and final portion after the adjustable portion. A number of registers receive the same data. However, t
7034574 Low-voltage differential signal (LVDS) transmitter with high signal integrity April 25, 2006
A differential signal output driver circuit having four switching transistors and having a bias transistor that shields each of the switching transistors from the corresponding output terminal thereby blocking the Miller capacitance of the switching capacitor from generating overshoo
7016507 Method and apparatus for noise reduction particularly in hearing aids March 21, 2006
This invention describes a practical application of noise reduction in hearing aids. Although listening in noisy conditions is difficult for persons with normal hearing, hearing impaired individuals are at a considerable further disadvantage. Under light noise conditions, conventiona
7009444 Temperature stable voltage reference circuit using a metal-silicon Schottky diode for low voltag March 7, 2006
Silicon-based voltage reference circuits that generate a temperature independent voltage reference that is less than even the silicon bandgap potential. The voltage reference circuit includes a diode-connected metal-silicon Schottky diode that is biased with a current. In this config
7006938 Reactive sensor modules using Pade' Approximant based compensation and providing module-sourced February 28, 2006
Reactive sensors typically exhibit nonlinear response to temperature variation. Systems and methods are disclosed for compensating for the nonlinear and/or temperature dependent behavior of reactive sensors and for calibrating the post-compensation output signals relative to known sa
7006809 Adaptive diversity receiver architecture February 28, 2006
A diversity receiver circuit that adaptively selects a variable number of one or more antennas for use in improving signal quality. Each antenna is provided its own receiver that each generates a representation of a received signal. This adaptive selection offers high dynamic adaptabilit
6960529 Methods for sidewall protection of metal interconnect for unlanded vias using physical vapor dep November 1, 2005
Methods for protecting the sidewall of a metal interconnect component using Physical Vapor Deposition (PVD) processes and using a single barrier metal material. After forming the metal interconnect component, a single barrier metal is deposited on its sidewall using PVD. A subsequent ani
6946828 Bi-directional current measurement circuit that uses a transconductance amplifier to generate a September 20, 2005
A current measurement circuit that measures current passing through two loads. The circuit includes a differential output transconductance amplifier. One current output terminal pf the amplifier receives the current from the first load with the first voltage input terminal coupled to
6940343 Amplifier September 6, 2005
Disclosed is an Amplifier (7) comprising an output driver with a first output stage (4) and a second output stage (5), where an input signal is applied non-inverted to the first output stage and inverted to the second output stage, characterized in that said input signal is applied with
6909305 Digitally controlled impedance driver matching for wide voltage swings at input/output node and June 21, 2005
A digitally controlled impedance driver circuit including a number of fingers, some of which having FETs and series resistors sized in binary or other differential ratios, and some of the higher power FETs being sized in equal ratio and perhaps sharing a series resistor. A DCI controller
6882513 Integrated overvoltage and reverse voltage protection circuit April 19, 2005
An integrated overvoltage and reverse voltage protection circuit. The protection circuit includes a field-effect transistor having a source terminal coupled to an input terminal of the protection circuit, and a drain terminal coupled to an output terminal of the protection circuit. A
6870398 Distributed memory and logic circuits March 22, 2005
Systems and methods are disclosed for distributing memory within one or more regions of circuitry that perform logic functions (or other types of functions that require dense interconnect structures) on an integrated circuit. The distributed memory reduces high density routing congestion
6867640 Double-sided extended drain field effect transistor, and integrated overvoltage and reverse volt March 15, 2005
An integrated overvoltage and reverse voltage protection circuit that includes two p-channel double-sided extended drain transistors coupled to a high voltage source, each having their n-well coupled through a resistor to the high voltage source. For voltage regulation, a voltage divider
6844781 Dual differential-input amplifier having wide input range January 18, 2005
A dual differential-input operational amplifier that includes six PMOSFETs having their source terminals coupled to a high voltage. A seventh and eighth PMOSFET have their source terminals coupled to a current source. Four NMOSFETs have their source terminals coupled to a low voltage. A
6822513 Symmetric and complementary differential amplifier November 23, 2004
A complementary differential amplifier includes two differential amplifiers. Each differential amplifier includes two input FETs (or bipolar transistors) having gate terminals coupled to the input terminals of the complementary differential amplifier. Two current load p-type field-ef
6819195 Stimulated quick start oscillator November 16, 2004
An oscillation circuit including a resonating element such as a crystal, an inverting amplifier and a resistor that each span the resonating element terminals, and two capacitors that capacitively couple the resonating element terminals to ground. An AC current source such as a temperatu
6819163 Switched capacitor voltage reference circuits using transconductance circuit to generate referen November 16, 2004
A switched capacitor voltage reference circuit that has a transconductance circuit that receives the output of the amplifier, and then outputs a current that depends on its input voltage. This may be accomplished using a charge pump that is controlled by the amplifier output. The tra
6816401 Static random access memory (SRAM) without precharge circuitry November 9, 2004
An SRAM memory includes a pull-up device coupled to each row of word lines in an array of SRAM cells. The pull-up devices are sized such that when a row is selected, the time for the associated word line to fully charge is sufficiently slow such that data stored in the selected SRAM cell
6794691 Use of irregularly shaped conductive filler features to improve planarization of the conductive September 21, 2004
A fabricated multiple layer integrated circuit in which adequate planarization is accomplished using irregularly shaped and properly spaced conductive filler features that are spaced in such a way that capacitive coupling of the conductive filler features with the active conductive r
6768371 Stable floating gate voltage reference using interconnected current-to-voltage and voltage-to-cu July 27, 2004
A programmable voltage reference circuit that includes a current-to-voltage converter circuit, a voltage-to-current converter circuit, and a floating gate. The current-to-voltage converter circuit has two current input terminals and a voltage output terminal. The voltage-to-current conve
6765825 Differential nor memory cell having two floating gate transistors July 20, 2004
An EEPROM memory cell that includes two floating gate transistors. Each of the drain terminals of the transistors is coupled to a corresponding differential bit line. The source terminal of both transistors are coupled to a common current source or sink. Each of the control gate terminal
6744309 Absolute value amplitude baseband detector June 1, 2004
Amplitude detection of a baseband electrical signal. The detection may be performed by performing full wave rectification on both an in-phase portion of the electrical signal, as on a quadrature-phase portion of the electrical signal. The output signal may be generated by summing the
6711397 Structures and methods for direct conversion from radio frequency modulated signals to baseband March 23, 2004
A direct conversion receiver is disclosed that converts RF signal into corresponding quadrature baseband signals without requiring conversion through an intermediate frequency. The direct conversion receiver abates local oscillator leakage, increases dynamic range and increases RF se
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