Patents Assigned to Mindspeed Technologies
  • Semiconductor die with process variation compensated operating voltage
    Patent number: 7215590
    Abstract: A semiconductor die includes at least one process monitoring circuit for evaluating at least one process parameter of the semiconductor die. The at least one process monitoring circuit can include a first group of process monitoring circuits for monitoring NFET speed and a second group of process monitoring circuits for monitoring PFET speed. The process monitoring circuits can be distributed at the corners of the semiconductor die. The semiconductor die further includes a voltage control circuit configured to store optimum voltage information corresponding to the at least one process parameter. The voltage control circuit is further configured to selectively provide the optimum voltage information to a system power supply. The voltage control circuit includes a calculated optimum voltage register that stores the optimum voltage information corresponding to the at least one process parameter.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: May 8, 2007
    Assignee: Mindspeed Technologies, Inc.
    Inventors: Craig E. Borden, Chih-Shun Ding, Steve Majors, Mishel Matloubian
  • Combining precoding with spectral shaping
    Patent number: 7212582
    Abstract: In one embodiment, a device includes but is not limited to: a precoder having a precoder input and a precoder output; a spectral shaper, having a spectral-shaper transfer function and being operably coupled internal to said precoder; and a precoder filter, internal to the precoder, the precoder filter having a transfer function which provides substantially the inverse of the spectral-shaper transfer function.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: May 1, 2007
    Assignee: Mindspeed Technologies, Inc.
    Inventor: Xuming Zhang
  • Method and apparatus for lossless switchover in a redundant switch fabric
    Patent number: 7200107
    Abstract: Method and apparatus for lossless switchover in a redundant switch fabric improves the reliability and predictability of a cell reaching its destination without the cell being lost during switch-over through redundant switch fabrics. Ingress and egress buffers are disposed in input and output line cards to maintain the history of transmitted cells. When switch-over occurs, the cells transmission history is used to recover lost cells transparently and with minimal latency.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: April 3, 2007
    Assignee: Mindspeed Technologies, Inc.
    Inventor: Axel K. Kloth
  • Simultaneous initialization of a plurality of memory elements from among a plurality of initialization values
    Patent number: 7200743
    Abstract: An electronic device according to one embodiment of the invention includes at least a first memory element and a second memory element, a first plurality of initialization value sets, and a second plurality of initialization value sets. The device further includes first and second initialization logic circuits that receives a mode value and a reload signal. Upon occurrence of the reload signal, the first initialization logic circuit selects a first predetermined initialization value set from among the first plurality of initialization value sets according to the mode value and initializes the first memory element with the first predetermined initialization value set. Substantially simultaneously, the second initialization logic circuit likewise selects a second predetermined initialization value set according to the mode value and initializes the second memory element.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: April 3, 2007
    Assignee: Mindspeed Technologies, Inc.
    Inventor: Welborn Malpass
  • High speed modem
    Patent number: 7194007
    Abstract: Various high speed modem embodiments are provided, for example, having a receiver configured to receive an analog data signal over a telephone line from a first modem, from which digitized analog data signal samples are generated by a processor employing a linear coding process using, for example, a sampling rate of at least 16 kHz with an 8 bits/sample. Following, the digitized analog data signal samples are transmitted over one or more digital lines of a first time division multiplexed bus to a second modem, which may be a digital loop carrier modem, for example. Thereafter, the second modem may demodulate the digitized analog data signal samples to generate digitized data, which may then be transmitted over one or more digital signal lines of a second time division multiplexed bus.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: March 20, 2007
    Assignee: Mindspeed Technologies, Inc.
    Inventors: Michael S. Beadle, Michael M. Metzger, Jason B. Brent
  • Speech compression system and method
    Patent number: 7191122
    Abstract: The invention improves the encoding and decoding of speech by focusing the encoding on the perceptually important characteristics of speech. The system analyzes selected features of an input speech signal, and first performing a common frame based speech coding of an input speech signal. The system then performs a speech coding based on either a first speech coding mode or a second speech coding mode. The selection of a mode is based on characteristics of the input speech signal. The first speech coding mode uses a first framing structure and the second speech coding mode uses a second framing structure.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: March 13, 2007
    Assignee: Mindspeed Technologies, Inc.
    Inventors: Yang Gao, Adil Benyassine, Jes Thyssen, Eyal Shlomot, Huan-yu Su
  • Method and system for data rate optimization in a digital communication system
    Patent number: 7187719
    Abstract: A method and for optimizing bit rate throughput in a digital communication system is provided. The method includes establishing a relationship between signal to noise ratio and plural symbol rates for a particular constellation size. The method also includes determining noise power spectral density (N(f)), wherein N(f) is determined during a silent period of line probing; determining Xk(f), wherein Xk(f) is determined by turning on a remote station transmit signal, after N(f) has been measured and determining residual echo Ek(f), wherein Ek(f) is determined by turning on a central station echo canceller.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: March 6, 2007
    Assignee: Mindspeed Technologies, Inc.
    Inventor: Xuming Zhang
  • Method and apparatus for intelligent modem warm start
    Patent number: 7187713
    Abstract: Modem start-up delay reduced by measuring condition of communications line upon connection termination. Variation between termination and start-up line conditions determines if cold or warm start is required. Warm-start may use original condition descriptors. Condition represented by ambient noise, echo or spectral response of channel.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: March 6, 2007
    Assignee: Mindspeed Technologies, Inc.
    Inventors: William W. Jones, Ragnar H Jonsson
  • Method for decoding composite VLIW packets utilizing a tree structure
    Patent number: 7181595
    Abstract: To decode a composite VLIW packet, assembly code is provided for the bit patterns corresponding to each individual instruction in the packet. The bit pattern for the template in the packet is then matched against a known template. The known template uniquely corresponds to a known syntax corresponding to one of a plurality of known syntaxes, where the plurality of known syntaxes are arranged as a plurality of first level nodes in a tree structure, where each of a plurality of second level nodes in said tree structure includes a combination of instruction types, and where each of a plurality of third level nodes in said tree structure includes an instruction type. The known syntax is then matched to a resolved packet syntax using the tree structure. The resolved packet syntax is then used to provide assembly code associated with the execution of the combination of instructions in the packet.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: February 20, 2007
    Assignee: Mindspeed Technologies, Inc.
    Inventor: Charles P. Siska
  • Trans-compression selection and configuration in modem over packet networks
    Patent number: 7177944
    Abstract: An apparatus and method for configuring a gateway device for a modem over packet network session is disclosed. For example, a system may include a first gateway device coupled to a first client device and a second gateway device coupled to a second client device, where the first gateway device is coupled to the second gateway device over a packet network. The trans-compression types and capabilities of the first and second gateway devices are determined and used to generate a set of negotiation parameters. The first gateway device then negotiates with the first client device using the negotiation parameters to select a first compression algorithm. A second compression algorithm selected between the second gateway device and the second client devices is also determined by the first gateway device.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: February 13, 2007
    Assignee: Mindspeed Technologies, Inc.
    Inventors: Zhihui Chen, Skantha Kandiah, Keith Chu
  • System to reduce distortion due to coding with a sample-by-sample quantizer
    Patent number: 7164719
    Abstract: A distortion removal system for reducing the quantization distortion that results from quantization of a signal by sample-by-sample quantization techniques is disclosed. The distortion removal system uses the signal previously quantized with the sample-by-sample quantization techniques to determine an expected quantization distortion. The expected quantization distortion is determined for each of a plurality of frames of the signal. The expected quantization distortion is removed from each of the frames of the signal.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: January 16, 2007
    Assignee: Mindspeed Technologies, Inc.
    Inventor: Jes Thyssen
  • Adaptive forward error correction for optimizing communications over packet networks
    Patent number: 7155538
    Abstract: An apparatus and method for providing adaptive error correction for a fax and/or modem over packet network session is disclosed. A gateway device configured in accordance with the present invention comprises a controller configured to receive a signal from its local client device and a signal processor coupled to said controller. The signal processor encodes the signal based on a level of error correction selected by the controller. The controller is configured to determine a type of signal communicated by the local client device from, and then select a level of error correction used by the signal processor to encode the signal based on the determined type of signal communicated by the local client device.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: December 26, 2006
    Assignee: Mindspeed Technologies, Inc.
    Inventors: Norbert Rossello, Fabien Klein, Philippe Guasch
  • Adaptive correlation window for open-loop pitch
    Patent number: 7155386
    Abstract: An approach for adaptively adjusting the correlation window for open-loop pitch determination is presented. Correlation between a windowed reference signal (or target signal) and a candidate signal is maximized under most conditions by sliding the reference window by a delta increment in either direction to capture peak energy. The traditional fixed size of the correlation window is maintained. However, the window slides forward and/or backwards to capture peak energy within the window. The position of the adjusting or sliding window is allowed to shift in a small range or increment in either direction to maximize the energy of the windowed signal thus making sure that at least one peak energy is captured within the window.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: December 26, 2006
    Assignee: Mindspeed Technologies, Inc.
    Inventor: Yang Gao
  • Flow control for communication ring access control
    Patent number: 7151742
    Abstract: Ring access control circuitry comprises a receive interface, a host interface coupled to the receive interface, a mate interface coupled to the host interface, a flow control agent coupled to the mate interface, a transmit interface coupled to the flow control agent, and a wrap path coupled from between the flow control agent and the transmit interface to between the receive interface and the host interface. A wrap is initiated over the wrap path in response to a link failure. The ring being controlled could be a resilient packet ring.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: December 19, 2006
    Assignee: Mindspeed Technologies, Inc.
    Inventor: David R. Meyer
  • Deriving seed values to generate excitation values in a speech coder
    Patent number: 7146309
    Abstract: There are provided methods and devices for generating excitation values for a speech signal. In one aspect, an example method comprises obtaining one or more characteristics of a first speech frame of the speech signal, deriving a first seed value based on the one or more characteristics of the first speech frame, providing the first seed value to a Gaussian time series generator; and using the Gaussian time series generator to generate an excitation values for the first frame. The one or more characteristics may include a spectrum information of the first frame, an energy information of the first frame, or a gain information of the first frame.
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: December 5, 2006
    Assignee: Mindspeed Technologies, Inc.
    Inventors: Adil Benyassine, Eyal Shlomot, Huan-Yu Su
  • Method and apparatus for switching data using parallel switching elements
    Patent number: 7142555
    Abstract: Data cells arriving in a switching unit are routed to virtual output queues. Load balancing method selects switching elements based on a dynamic utilization tracked by request virtual output queues that store switching requests from the virtual output queues.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: November 28, 2006
    Assignee: Mindspeed Technologies, Inc.
    Inventor: Yuanlong Wang
  • System for an adaptive excitation pattern for speech coding
    Patent number: 7133823
    Abstract: There are provided short term enhancement methods and systems to improve perceptual quality in reproduced speech. According to one aspect, a method of enhancing a speech signal includes processing said speech signal to generate a plurality of frames, wherein each of said plurality frames includes a plurality of subframes, coding a previous subframe of said plurality of subframes using Code-Excited Linear Prediction to generate a previous excitation signal, and applying short term enhancement on said previous excitation signal to enhance a current excitation signal for a current subframe.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: November 7, 2006
    Assignee: Mindspeed Technologies, Inc.
    Inventor: Yang Gao
  • Adaptive error correction for communications over packet networks
    Patent number: 7133934
    Abstract: An apparatus and method for providing adaptive error correction for a fax and/or modem over packet network session is disclosed. A gateway device configured in accordance with the present invention comprises a controller configured to receive a signal from its local client device and a signal processor coupled to said controller. The signal processor encodes the signal based on a level of error correction selected by the controller. The controller is configured to determine a mode of operation of the local client device from the signal, and then select a level of error correction used by the signal processor to encode the signal based on the determined mode of operation of the local client device.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: November 7, 2006
    Assignee: Mindspeed Technologies, Inc.
    Inventors: Norbert Rossello, Fabien Klein
  • Music detection with low-complexity pitch correlation algorithm
    Patent number: 7130795
    Abstract: A method is provided for detecting music in a speech signal having a plurality of frames. The method comprises obtaining one or more first pitch correlation candidates from a first frame of the plurality of frames; obtaining one or more second pitch correlation candidates from a second frame of the plurality of frames; selecting a pitch correlation (Rp) from the one or more first pitch correlation candidates and the one or more second pitch correlation candidates; and distinguishing music from background noise based on analyzing the pitch correlation (Rp).
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: October 31, 2006
    Assignee: Mindspeed Technologies, Inc.
    Inventor: Yang Gao
  • Rate determination coding
    Patent number: 7127390
    Abstract: A speech encoding system and method for encoding a speech data signal including a number of frames. The speech encoding system includes a speech data rate determinator and a number of speech data signal encoders. The speech data rate determinator determines the data rate of each of the frames and selects one of the speech data signal encoders based on each data rate. Each frame may be encoded using a different encoding method or standard. The encoding system may further include a network controller for selecting any number of the speech data signal encoders based on predetermined factors.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: October 24, 2006
    Assignee: Mindspeed Technologies, Inc.
    Inventor: Huan-Yu Su