Patents Assigned to DSP Group, Ltd.
  • Patent number: 9088897
    Abstract: An apparatus for enabling operation of a LDC network within a DECT system having a modified protocol, comprising an A-field with an identity of a FP shared by both the DECT system and the LDC network, B-fields with unique sync patterns for the DECT system and the LDC network, respectively; and separate dummy bearers for transmission by the FP for the DECT system and the LDC network, respectively, and a method for using the same.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: July 21, 2015
    Assignee: DSP GROUP LTD.
    Inventors: Steven Dickinson, Otmar Rengert, Jochen Kilian, Eli Fogel
  • Patent number: 9070506
    Abstract: A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more sub-amplifiers having high and low power circuits and whose outputs are combined to yield the total desired power gain. An integrated multi-tap transformer having primary and secondary windings arranged in a novel configuration provide efficient power combining and transfer to the antenna of the power generated by the individual sub-amplifiers.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: June 30, 2015
    Assignee: DSP GROUP, LTD.
    Inventors: Sergey Anderson, Alexander Mostov
  • Patent number: 9065402
    Abstract: The subject matter discloses a method of amplifying a signal, the method comprising receiving a command to start transmission, gradually increasing a value of an enable signal used to amplify the transmission and intermittently transmitting the value of the enable signal to an enable transistor used to allow amplifying a transmitted signal.
    Type: Grant
    Filed: July 5, 2010
    Date of Patent: June 23, 2015
    Assignee: DSP GROUP LTD.
    Inventor: Svetlana Kantor
  • Patent number: 9041462
    Abstract: An electronic circuit, including, a power amplifier adapted to amplify an RF signal and provide it as output from the integrated circuit; a power source that is adapted to provide an unregulated voltage to the power amplifier; a regulator adapted to provide a regulated bias voltage; a subtracter that is adapted to accept a voltage proportional to the unregulated voltage and subtract it from the bias voltage to provide a reference voltage to the power amplifier; wherein the power amplifier is adapted to use the reference voltage to adjust the output from the power amplifier so that it will provide a stable power output.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: May 26, 2015
    Assignee: DSP GROUP LTD.
    Inventor: Svetlana Kantor
  • Patent number: 9043211
    Abstract: In a mobile device, a bone conduction or vibration sensor is used to detect the user's speech and the resulting output is used as the source for a low power Voice Trigger (VT) circuit that can activate the Automatic Speech Recognition (ASR) of the host device. This invention is applicable to mobile devices such as wearable computers with head mounted displays, mobile phones and wireless headsets and headphones which use speech recognition for the entering of input commands and control. The speech sensor can be a bone conduction microphone used to detect sound vibrations in the skull, or a vibration sensor, used to detect sound pressure vibrations from the user's speech. This VT circuit can be independent of any audio components of the host device and can therefore be designed to consume ultra-low power. Hence, this VT circuit can be active when the host device is in a sleeping state and can be used to wake the host device on detection of speech from the user.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: May 26, 2015
    Assignee: DSP GROUP LTD.
    Inventors: Moshe Haiut, Arie Heiman, Uri Yehuday
  • Patent number: 9026068
    Abstract: There is provided a system that includes a tunable amplification module, a coupler, an interface module; a detector that is arranged to output an impedance indicative signal and a power indicative signal; wherein the impedance indicative signal is indicative of an impedance mismatch between an output impedance of the tunable amplification module and an impedance of a radio frequency (RF) antenna as seen by the tunable amplification module, wherein the power indicative signal is indicative of an output power of the tunable amplification module.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: May 5, 2015
    Assignee: DSP Group Ltd.
    Inventors: Lior Blanka, Solon Jose Spiegel
  • Publication number: 20150070097
    Abstract: A novel and useful configurable radio frequency (RF) power amplifier (PA) and related front end module (FEM) circuit that enables manipulation of the operating point of the power amplifier resulting in configurability, multimode and multiband operating capability. The configurable PA also provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configurable power amplifier is made up of one or more configurable sub-amplifiers having each constructed to have several orders of freedom (i.e. biasing points). Each sub-amplifier and its combiner path include active and passive elements. Manipulating one or more biasing points of each sub-amplifier, and therefore of the aggregate power amplifier as well, achieves multimode and multiband operation. Biasing points include, for example, the gain and saturation point, frequency response, linearity level and EVM.
    Type: Application
    Filed: November 13, 2014
    Publication date: March 12, 2015
    Applicant: DSP Group, Ltd.
    Inventors: Abraham Bauer, Eli Schwartz, Ilya Sima, Lior Blanka, Sergey Anderson, Ron Pongratz, Alex Mostov
  • Patent number: 8937515
    Abstract: A device for mixing multiple (N) pulse density modulated (PDM) bit streams of a bit rate, the device comprises an input logic, an error accumulation circuit, an error correction circuit and an adder of more than N bits; wherein the device is arranged to output an output PDM bit stream that represents a mixture of the multiple input PDM bit streams; wherein the output PDM bit stream comprises a plurality of output PDM bits, wherein a certain output PDM bit of a plurality of output PDM bits that form the output PDM bit stream is generated during a certain clock cycle; wherein the input logic is arranged to select, during each fraction of the certain clock cycle, a current bit of a selected PDM bit stream, wherein different PDM bit streams are selected during different fragments of the certain clock cycle; wherein the error accumulation circuit is arranged to store intermediate values during a first fraction till a penultimate fraction of the certain clock signal and to store a last value during a last fraction
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: January 20, 2015
    Assignee: DSP Group Ltd.
    Inventor: Moshe Haiut
  • Patent number: 8938036
    Abstract: A device and method of fast automatic gain control in quadrature receivers are disclosed. The AGC activity between the I and Q branches is split where in one branch the receive chain is in a certain gain state and in the other branch the receive chain is in another possible gain state, resulting in a significant shortening of the AGC duration of any IQ receiver.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: January 20, 2015
    Assignee: DSP Group Ltd.
    Inventors: Ariel Feldman, Udi Suissa
  • Publication number: 20150002554
    Abstract: A method for power management of a self-luminous display having a pixel addressable intensity, the method is executed by a device that comprises the self-luminous display. The method may include determining a selected area and a non-selected area of the self-luminous display; and reducing power consumption associated with the non-selected area.
    Type: Application
    Filed: May 22, 2014
    Publication date: January 1, 2015
    Applicant: DSP Group LTD.
    Inventors: Haim Kupershmidt, Graham Kenneth Smith
  • Publication number: 20140376453
    Abstract: A wireless communication device that includes an interface and a processor; wherein the interface is arranged to receive input signals; wherein the processor is arranged to: calculate an input signal's attribute; and determine an attribute of a collision avoidance scheme in response to the input signal's attribute.
    Type: Application
    Filed: May 21, 2014
    Publication date: December 25, 2014
    Applicant: DSP Group LTD.
    Inventor: Graham Kenneth Smith
  • Patent number: 8908815
    Abstract: A method, implementable on a multiple-input, multiple-output symbol receiver, includes selecting a hypothesis for a second symbol value U2 from among the set of fixed constellation points, calculating a hypothesis for a first symbol value U1 from the resultant selected U2 value, and generating a first half of counter-hypotheses from interim results of calculating the hypotheses values.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: December 9, 2014
    Assignee: DSP Group Ltd.
    Inventor: Leonardo Vainsencher
  • Publication number: 20140337036
    Abstract: In a mobile device, a bone conduction or vibration sensor is used to detect the user's speech and the resulting output is used as the source for a low power Voice Trigger (VT) circuit that can activate the Automatic Speech Recognition (ASR) of the host device. This invention is applicable to mobile devices such as wearable computers with head mounted displays, mobile phones and wireless headsets and headphones which use speech recognition for the entering of input commands and control. The speech sensor can be a bone conduction microphone used to detect sound vibrations in the skull, or a vibration sensor, used to detect sound pressure vibrations from the user's speech. This VT circuit can be independent of any audio components of the host device and can therefore be designed to consume ultra-low power. Hence, this VT circuit can be active when the host device is in a sleeping state and can be used to wake the host device on detection of speech from the user.
    Type: Application
    Filed: May 8, 2014
    Publication date: November 13, 2014
    Applicant: DSP Group LTD.
    Inventors: Moshe Haiut, Arie Heiman, Uri Yehuday
  • Publication number: 20140292412
    Abstract: A device and method of predistortion linearization that account for both EVM and spectral mask are disclosed. The device and method are based on transforming the predistorter optimization problem from the time domain to the frequency domain, and weighting the equations according to one or more desired objectives. One objective focuses on abiding by the spectral mask, whereas another objective focuses on improving the EVM.
    Type: Application
    Filed: August 30, 2011
    Publication date: October 2, 2014
    Applicant: DSP GROUP LTD.
    Inventors: Ariel Feldman, Udi Suissa
  • Publication number: 20140204986
    Abstract: The subject matter discloses an apparatus residing within an RF chip, comprising: a detection unit for detecting IQ mismatch in an IQ signal; an analog calibration module comprising a first analog calibration mechanism for calibrating IQ mismatch in the phase component and a second analog calibration mechanism for calibrating IQ mismatch in the amplitude component; and a control unit for determining a calibration sequence of the IQ signal.
    Type: Application
    Filed: July 3, 2011
    Publication date: July 24, 2014
    Applicant: DSP Group, Ltd.
    Inventors: Udi Suissa, Avi Cohen
  • Publication number: 20140146927
    Abstract: A method and adaptive processor for estimating a reference signal, comprising receiving or determining a number of groups and respective group sizes, each group associated with a range of delay values of the reference signal, determining a multiplicity of coefficients, each coefficient associated with a specific delay of the reference signal, determining a multiplicity of weights, each weight associated with one of the groups, multiplying each sample of the reference signal having a delay by a corresponding coefficient to obtain a first product, and summing a multiplicity of first products associated with a group into a group sum signal sample, and multiplying each group sum by a weight associated with the group to obtain a second product, and summing all second products to obtain an estimated signal value.
    Type: Application
    Filed: May 13, 2010
    Publication date: May 29, 2014
    Applicant: DSP Group Ltd.
    Inventors: Mark Raifel, Amos Schreibman, Eli Fogel
  • Patent number: 8700018
    Abstract: A method for modifying an application framework devised for network-based telephony to operate in a local telephony, comprising adapting the application framework to interact with a communication device operable cooperatively with a local base, and emulating a functionally of the network related to the application framework according to an operation of the local base, at least partially, and an apparatus for using the modified application framework.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: April 15, 2014
    Assignee: DSP Group Ltd.
    Inventors: Avraham Fraenkel, Pavan Kumar Oruganti, Zvi Kleiner
  • Publication number: 20140087671
    Abstract: A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more sub-amplifiers having high and low power circuits and whose outputs are combined to yield the total desired power gain. An integrated multi-tap transformer having primary and secondary windings arranged in a novel configuration provide efficient power combining and transfer to the antenna of the power generated by the individual sub-amplifiers.
    Type: Application
    Filed: September 23, 2013
    Publication date: March 27, 2014
    Applicant: DSP Group, Ltd.
    Inventors: Alexander Mostov, Sergey Anderson, Udi Suissa, IIya Sima, Avi Bauer
  • Publication number: 20140084880
    Abstract: A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more sub-amplifiers having high and low power circuits and whose outputs are combined to yield the total desired power gain. An integrated multi-tap transformer having primary and secondary windings arranged in a novel configuration provide efficient power combining and transfer to the antenna of the power generated by the individual sub-amplifiers.
    Type: Application
    Filed: September 23, 2013
    Publication date: March 27, 2014
    Applicant: DSP Group, Ltd.
    Inventors: Michael Gulko, Avi Cohen
  • Publication number: 20140087667
    Abstract: A system may be provided and may include a first transmitter; a first antenna, coupled to the first transmitter; wherein the first transmitter is arranged to transmit via the first antenna first radio frequency (RF) signals; a first receiver; a second antenna, coupled to the first receiver; the second antenna differs from the first antenna; an RF acquisition module that is arranged to acquire second RF signals that are representative of the first RF signals; and an RF suppression module, arranged to receive the second RF signals and to generate RF suppression signals for suppressing an effect of a transmission of the first RF signals on the first receiver, and to provide the RF suppression signals to the first receiver.
    Type: Application
    Filed: September 24, 2012
    Publication date: March 27, 2014
    Applicant: DSP Group Ltd.
    Inventors: Kobi Ben Atar, Naftali Chayat, Moshe Haiut