Patents Assigned to AMI Semiconductor, Inc.
  • Publication number: 20100142714
    Abstract: 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 taken to the parameter space to detect an acoustic shock event. The device may be advantageously implemented using a weighted overlap-add approach to provide low group delay, high-fidelity and a high degree of protection from acoustic shock events.
    Type: Application
    Filed: January 13, 2010
    Publication date: June 10, 2010
    Applicant: AMI SEMICONDUCTOR, INC.
    Inventors: Todd SCHNEIDER, Robert L. BRENNAN, David HERMANN, Tina SOLTANI
  • Patent number: 7706902
    Abstract: 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 store logged data. During the hearing aid audio processing, the DSP entity communicates with the NV memory via the level translating module. The level translating module performs voltage-translation during data logging to a communication signal between the DSP entity and the NV memory.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: April 27, 2010
    Assignee: AMI Semiconductor, Inc.
    Inventors: Alexandre Heubi, Olivier Hautier, Dustin Griesdorf, Jakob Nielsen, Todd Schneider
  • Patent number: 7692568
    Abstract: 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 decimation filter is approximately a integral multiple of a sampling frequency of the sigma delta modulator. In an embodiment, the sigma-delta modulator includes one or more successive approximation converters. In an embodiment, the sigma delta modulator includes one or more area efficient integrators.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: April 6, 2010
    Assignee: AMI Semiconductor, Inc.
    Inventors: Neaz Farooqi, Jerry Wahl, Garry Richardson
  • Patent number: 7693294
    Abstract: 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 processes data packets including audio data packets. The processing events implemented in one or more than one digital subsystem are reorganized to change the profile for executing the events inside the subsystem(s). The dynamic current spectral properties in one or more digital subsystems are changed.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: April 6, 2010
    Assignee: AMI Semiconductor, Inc.
    Inventors: Todd Schneider, Andreas Drollinger, Marc Matthey, Jakob Nielsen
  • Patent number: 7672462
    Abstract: 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 taken to the parameter space to detect an acoustic shock event. The device may be advantageously implemented using a weighted overlap-add approach to provide low group delay, high-fidelity and a high degree of protection from acoustic shock events.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: March 2, 2010
    Assignee: AMI Semiconductor, Inc.
    Inventors: Todd Schneider, Robert L. Brennan, David Hermann, Tina Soltani
  • Publication number: 20090231204
    Abstract: An antenna and a method for direct matching the antenna to a transceiver is provided. The method includes designing the antenna to directly match an antenna impedance to at least one of an input impedance of the transceiver and an output impedance of the transceiver. The step of designing includes modeling the antenna and the transceiver and implementing an electromagnetic field simulation using a human body phantom model with the antenna to determine the value of an antenna parameter for the antenna model. The antenna for a communication device having a transceiver, includes an antenna element directly coupled with the transceiver having a transmitter and a receiver, an antenna parameter of the antenna element being tuned so that the real part of the impedance of the antenna is maximized, and a plate for optimizing the reactive part of the impedance of the antenna. The impedance of the antenna is directly matched to at least one of an impedance of the transmitter and an impedance of the receiver.
    Type: Application
    Filed: December 5, 2008
    Publication date: September 17, 2009
    Applicant: AMI SEMICONDUCTOR, INC.
    Inventors: George Shaker, Mohammad-Reza Nezhad-Ahmadi, Safieddin Safavi-Naeini, Gareth Pryce Weale
  • Patent number: 7558390
    Abstract: 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 filtering function is a selected function and applying the filtering function to the corresponding signal path, thereby correcting the transfer function of the signal path to the selected function to equalize the output signals from the signal paths. The step of applying the filtering function comprises steps of providing an equalization filter to the signal path and applying the filtering function to the equalization filter of its corresponding signal path, thereby equalizing output signals from the filter of the signal paths.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: July 7, 2009
    Assignee: AMI Semiconductor, Inc.
    Inventors: Jakob Nielsen, Robert Brennan, Todd Schneider
  • Publication number: 20090152100
    Abstract: The present invention relates to a high power IC (Integrated Circuit) semiconductor device and process for making same. More particularly, the invention encompasses a high conductivity or low resistance metal stack to reduce the device R-on which is stable at high temperatures while in contact with a thick aluminum wire-bond that is required for high current carrying capability and is mechanically stable against vibration during use, and process thereof. The invention further discloses a thick metal interconnect with metal pad caps at selective sites, and process for making the same.
    Type: Application
    Filed: January 31, 2008
    Publication date: June 18, 2009
    Applicant: AMI Semiconductor, Inc.
    Inventors: Hormazdyar Minocher Dalal, Jagdish Prasad, Hocine Bouzid Ziad
  • Publication number: 20090152725
    Abstract: The present invention relates to a high power IC (Integrated Circuit) semiconductor device and process for making same. More particularly, the invention encompasses a high conductivity or low resistance metal stack to reduce the device R-on which is stable at high temperatures while in contact with a thick aluminum wire-bond that is required for high current carrying capability and is mechanically stable against vibration during use, and process thereof. The invention further discloses a thick metal interconnect with metal pad caps at selective sites, and process for making the same.
    Type: Application
    Filed: January 31, 2008
    Publication date: June 18, 2009
    Applicant: AMI Semiconductor, Inc.
    Inventors: Hormazdyar Minocher Dalal, Jagdish Prasad, Hocine Bouzid Ziad
  • Publication number: 20090115437
    Abstract: An electrical circuit testing assembly that includes a mechanical reference that is relatively stationary as compared to a circuit under test. A probe support assembly is coupled to the mechanical reference and includes probes for contacting interconnect pads on the circuit under test. Optionally, the probe support structure is attached to the mechanical reference via a column that is thermally resistive. Also optionally, a testing circuitry support structure (e.g., a printed circuit board) is not rigidly attached to the mechanical reference or to the probe support structure, thereby permitting the testing circuitry support structure to float with respect to the probe support structure.
    Type: Application
    Filed: October 12, 2007
    Publication date: May 7, 2009
    Applicant: AMI Semiconductor, Inc.
    Inventors: Ronald W. Young, Frank G.J. De Ruyck
  • Publication number: 20090096519
    Abstract: A method and system for a frequency shift key demodulation is provided. The system includes a counting block for counting a reference clock within a window defined by a modulated signal, a detector for comparing a count value output from the counting block with digital multi-level thresholds and outputting baseband data based on the comparison, and a configurations block for configuring at least one of the counting block and the detector. The method includes counting a reference clock within a window defined by the FSK modulated signal and outputting a count value as a result of the counting, and comparing the count value with multi-level thresholds to output baseband data based on the comparison.
    Type: Application
    Filed: February 8, 2008
    Publication date: April 16, 2009
    Applicant: AMI SEMICONDUCTOR, INC.
    Inventors: ALAA EL-AGHA, DUSTIN GRIESDORF, GARETH P. WEALE, JAKOB NIELSON
  • Publication number: 20090096543
    Abstract: A method, system and digital modulator for modulation are provided The modulator includes a dividing mechanism for dividing a reference clock by a divide value to produce a modulated signal associated with at least one input data, and a control unit for providing at least one divide sequence to the dividing mechanism. The at least one divide sequence includes a sequence of one or more divide values. The divide value of the divide sequence is configurable and selectively provided to the dividing mechanism based on the at least one input data. The method includes configuring at least one divide sequence including a sequence of one or more divide values, and selecting a divide value from the at least one divide sequence based on at least one input data. The method includes dividing a reference clock by the selected divide value and generating a modulated signal based on the divide operation.
    Type: Application
    Filed: February 7, 2008
    Publication date: April 16, 2009
    Applicant: AMI SEMICONDUCTOR, INC.
    Inventors: Alaa El-Agha, Dustin Griesdorf, Gareth P. Weale, Jakob Nielson
  • Publication number: 20090097588
    Abstract: Digital data encoding and decoding method and system is provided. The method for digital data communication include encoding bit stream having monitoring a specific bit pattern in the bit stream when a frame signal is received, and based on the monitoring, creating a unique encoding pattern for the frame signal in encoded data. The system for digital data communication includes an encoder having a control unit for monitoring incoming bit stream to detect a specific bit pattern at a bit position relative to a frame signal and asserting a control signal, and a mark and space unit for generating encoded data having at least one of one or more marks and one or more spaces, based on the bit stream in response to the control signal so that the frame signal is embedded into the encoded data. The method for decoding includes recovering bit stream from encoded data. The encoded data is generated using a unique encoding pattern for a frame signal in the encoded data.
    Type: Application
    Filed: February 7, 2008
    Publication date: April 16, 2009
    Applicant: AMI SEMICONDUCTOR, INC.
    Inventors: Alaa El-Agha, Dustin Griesdorf
  • Patent number: 7489790
    Abstract: 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 reproduce the input signal, and a processor. The processor processes the input signal using a gain. The processor includes an inhibitor, which inhibits distortions, and an adjuster, which adjusts the gain. The inhibitor acts to smooth an envelope of the input signal to inhibit undesired modulation. The adjuster adjusts the gain if the envelope is either above or below a threshold.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: February 10, 2009
    Assignee: AMI Semiconductor, Inc.
    Inventors: Jon Schmidt Kindred, Bryant Sorensen, Jerry Wahl
  • Publication number: 20080186241
    Abstract: Method and System for wireless communications is provided. The system includes an RF module, and a coupler. The coupler is coupled with the RF module. The coupler includes a member for conductive coupling with the user's body such that RF energy is coupled into and/or out of the user's body.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 7, 2008
    Applicant: AMI SEMICONDUCTOR, INC.
    Inventor: Craig L. Christensen
  • Patent number: 7398173
    Abstract: 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.). Padé Approximant function emulators are used to model the nonlinear offset and/or nonlinear sensitivity behaviors of a given sensing device relative to one or more temperature sub-ranges and to produce temperature compensating corrections for offset and/or sensitivity as may be desired.
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: July 8, 2008
    Assignee: AMI Semiconductor, Inc.
    Inventors: Jose Marcos Laraia, David John Willis
  • Publication number: 20080137252
    Abstract: A current protection circuit that uses a sequence of bipolar transistors to provide or draw current from a protected circuit node. An initial bipolar transistor has its emitter terminal coupled to the protected circuit node, with its collector terminal coupled to a current source or sink. One or more additional intermediary bipolar transistors are also provided in the sequence. Each additional intermediary bipolar transistor has its emitter terminal coupled to the base terminal of the previous bipolar transistor in the sequence, and has its collector terminal coupled to the current source or sink. To complete the sequence, a reverse-biased diode is coupled between the base terminal of the final intermediary bipolar transistor and the current source or sink. This allows for effective triggering of current protection for a protected circuit node without requiring a zener diode.
    Type: Application
    Filed: December 6, 2006
    Publication date: June 12, 2008
    Applicant: AMI Semiconductor, Inc.
    Inventors: Matthew A. Tyler, John J. Naughton
  • Patent number: 7378858
    Abstract: 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 terminal, and a gain control terminal; (b) a first summer coupled to the output terminal of the variable gain amplifier adds in a first offset signal; (c) a first multiplier coupled to an output of the first summer receives a proportional feedback factor signal and correspondingly generates a multiplied feedback; (d) a second summer coupled to an output terminal of the first multiplier adds in a corresponding second offset signal; and (e) a second multiplier coupled to an output of the second summer receives a gain factor signal and generates a multiplied gain signal; where the gain control terminal of the variable gain amplifier is operatively coupled to an output terminal of the second multiplier.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: May 27, 2008
    Assignee: AMI Semiconductor, Inc.
    Inventors: Jose Marcos Laraia, Jose G. Taveira, Robert P. Moehrke
  • Publication number: 20080112574
    Abstract: A directional signal processing system for beamforming information signals. The system includes an oversampled filterbank, which has an analysis filterbank for transforming the information signals in time domain into channel signals in transform domain, a synthesis filterbank and a signal processor. The signal processor processes the outputs of the analysis filterbank for beamforming the information signals. The synthesis filterbank transforms the outputs of the signal processor to a single information signal in time domain.
    Type: Application
    Filed: January 14, 2008
    Publication date: May 15, 2008
    Applicant: AMI Semiconductor, Inc.
    Inventors: Robert BRENNAN, Edward Chau, Hamid Nadjar, Todd Schneider
  • Publication number: 20080067602
    Abstract: Current protection in integrated circuit having multiple pads. Different types of current protection structures may be associated with different pads. A common current discharge or charge path may be used to provide current to or draw current from various of these heterogenic current protection structures. Since a common current discharge or charge path is used, the metallization used to formulate a discharge solution is significant simplified. Additionally, the protection structures may be provided with selectively conductive regions that are approximately radially symmetrical around the circumference of the pad. Accordingly, if the protection structures are slightly off center with respect to the bond pad (due to, for example, mask alignment error), the error in the amount of active region around the circumference of the pad is at least partially averaged out.
    Type: Application
    Filed: September 15, 2006
    Publication date: March 20, 2008
    Applicant: AMI Semiconductor, Inc.
    Inventors: Matthew A. Tyler, John J. Naughton