Patents Assigned to DSP Group, Ltd.
  • Patent number: 9667206
    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: January 22, 2015
    Date of Patent: May 30, 2017
    Assignee: DSP GROUP Ltd.
    Inventors: Sergey Anderson, Alexander Mostov, Eli Schwartz, Ron Pongratz, Ilya Sima
  • Patent number: 9653989
    Abstract: A system that may include a first direct current to direct current (DC) converter that is arranged to determine at a first determination rate whether to alter a parameter of operation of the first DC to DC converter and to selectively alter the parameter of operation of operation of the first DC to DC converter in response to the determination; and a second switched-mode DC to DC converter that is arranged to determine at a second determination rate whether to alter the parameter of operation of the second DC to DC converter and to selectively alter the parameter of operation of operation of the second DC to DC converter in response to the determination. The second determination rate is higher by at least a factor of two than the first determination rate. The first and second DC to DC converters are mutually unsynchronized.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: May 16, 2017
    Assignee: DSP GROUP Ltd.
    Inventor: Assaf Ganor
  • Patent number: 9648417
    Abstract: A method of charge reuse, the method may include repeating the steps of: electrically coupling a first group of capacitive loads to a second group of capacitive loads; wherein the capacitive loads of the first group and of the second group are Microelectromechanical systems (MEMS) capacitive loads or Nanoelectromechanical systems (NEMS) capacitive loads; charging the second group with a first charge provided from the first group; electrically disconnecting the first group from the second group; operating the second group while using the first charge; electrically coupling the first group to the second group; charging the first group with a second charge provided from the second group; electrically disconnecting the first group from the second group; and operating the first group while using the second charge.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: May 9, 2017
    Assignee: DSP GROUP LTD.
    Inventors: Haim Kupershmidt, Moti Margalit
  • Patent number: 9608577
    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: March 28, 2017
    Assignee: DSP GROUP LTD.
    Inventors: Alexander Mostov, Sergey Anderson, Udi Suissa, Ilya Sima, Avi Bauer
  • Patent number: 9602920
    Abstract: A scheme is described to switch the power supply to the MEMS microphone on and off in a cyclic manner that is synchronized with the associated ADC sampling rate. In this way the MEMS microphone amplifier, whether it is a J-FET transistor or an operational amplifier, is off most of the cycle time, and is turned on only for a few micro-seconds prior to the sample-and-hold timing of the ADC device. By this method, the average power consumption of an existing analog MEMS microphone can be reduced by a factor of 10 or more.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: March 21, 2017
    Assignee: DSP GROUP LTD.
    Inventor: Moshe Haiut
  • Patent number: 9596702
    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: Grant
    Filed: May 21, 2014
    Date of Patent: March 14, 2017
    Assignee: DSP Group Ltd.
    Inventor: Graham Kenneth Smith
  • Patent number: 9596534
    Abstract: Methods and systems are provided for controlling bone conduction, in which a bone conduction element may be used to output acoustic signals when it is in contact with a user. A bone conduction sensor may also be made in contact with the user, and used to obtain feedback relating to the outputting of the acoustic signals via the bone conduction element. The outputting of the acoustic signals may then be adaptively controlled based on processing of the feedback. The adaptive controlling may comprise adjusting components and/or functions related to or used in the outputting of the acoustic signals. For example, the adaptive controlling may comprise adjusting gain, frequency response, and/or equalization associated with a drive amplifier driving the bone conduction element.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: March 14, 2017
    Assignee: DSP Group Ltd.
    Inventors: Arie Heiman, Moshe Haiut, Uri Yehuday
  • Patent number: 9564145
    Abstract: Methods and systems are provided for enhancing speech intelligibility in electronic devices. During outputting of acoustic signal via an electronic device, measurement of forces applied by user of the electronic device against the device (or enclosure thereof) may be obtained. The force measurements may be used to assess and/or estimate the listening intelligibility experienced by the user. Further, the force measurements may be used to control or adjust a listening intelligibility stage applied during generation and/or processing of the acoustic signals that are outputted via the electronic device. In some instances, an audio input, corresponding to ambient noise affecting intelligibility, may be obtained, and may be used to control or assist in controlling the listening intelligibility stage.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: February 7, 2017
    Assignee: DSP Group Ltd.
    Inventor: Yaakov Chen
  • Patent number: 9565632
    Abstract: A method that includes operating a base station at a first operational mode thereby preventing the base station from a periodically transmitting a beacon; detecting, by the base station, a transmission from a first wireless communication device; determining, by the base station and in response to the transmission from the first wireless communication device, whether to continue operating in the no emission mode or to enter a emission mode during which the base station is allowed to transmit the beacon; and entering the second operational mode, if it is determined to enter the second operational mode, and sending the beacon to the first wireless communication device.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: February 7, 2017
    Assignee: DSP Group Ltd.
    Inventors: Otmar Rengert, Jochen Kilian
  • Patent number: 9544788
    Abstract: A digital enhanced cordless telecommunication (DECT) base station, the DECT base station may include a transmitter that is arranged to transmit, at different points of time, downlink transmitted DECT signals to another DECT device that differs from the DECT base station; a receiver that is arranged to receive from the other DECT device downlink reception information indicative of attributes of downlink received DECT signals that were received by the other DECT device as a result of the transmission of the downlink transmitted DECT signals; a processor that is arranged to process the downlink reception information to detect a motion that affects a reception of the downlink received DECT signals by the other device.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: January 10, 2017
    Assignee: DSP Group Ltd.
    Inventors: Moshe Haiut, Lior Blanka
  • Patent number: 9514957
    Abstract: A method that may include of at least partially surrounding with an insulating encapsulation lead frames, an integrated circuit attachment and wire bonding while preventing the insulating encapsulation from contacting at least one area of a base element; and at least partially surrounding an exterior of the insulating encapsulation with a conductive coating that contacts at least one area of the base element.
    Type: Grant
    Filed: February 8, 2015
    Date of Patent: December 6, 2016
    Assignee: DSP Group LTD.
    Inventors: Avraham Bauer, Avraham Cohen
  • Patent number: 9484977
    Abstract: The present invention is a novel and useful RF transformer based transmit/receive (TX/RX) integrated RF switch. In one embodiment of the invention, the TX/RX RF switch circuit is based on the use of an RF transformer which functions as (1) the PA output transformer during TX mode and (2) as a series inductance in an LNA matching network during receive mode. Thus, the RF transformer plays a dual function or role. Antenna diversity is achieved by having multiple antennas each having an associated antenna switch connected to the output transformer. The TX/RX switch of the invention reduces the number of switches required for antenna diversity to a minimum and minimizes RF losses in the system. The TX/RX switch is suitable for use with modern wireless communication standards such as DECT, 802.11 WLAN, Bluetooth, ZigBee, etc. The configuration of the TX/RX circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: November 1, 2016
    Assignee: DSP GROUP, LTD.
    Inventors: Sergey Anderson, Sharon Betzalel
  • Patent number: 9473077
    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: Grant
    Filed: August 30, 2011
    Date of Patent: October 18, 2016
    Assignee: DSP Group Ltd.
    Inventors: Ariel Feldman, Udi Suissa
  • Publication number: 20160276986
    Abstract: A novel and useful linear, efficient, smart wideband CMOS hybrid power amplifier that combined an analog linear amplification path and a digital power amplification (DPA) path. PA path control logic analyzes the input I and Q signals and determines which amplification paths to steer the input I and Q signals to. The analog linear amplification path comprises digital to analog converters for both I and Q paths and one or more analog linear power amplifiers. The digital power amplification path comprises I and Q up-sampling circuits and I and Q RF DAC circuits (e.g., digital PA circuits). In operation, the PA path control logic compares the I and Q signals to thresholds (which may or may not be different) and based on the comparisons, selects one or more paths for the input I and Q signals. Whether the signals from the analog and digital amplification paths are to be combined or selected (i.e.
    Type: Application
    Filed: March 21, 2016
    Publication date: September 22, 2016
    Applicant: DSP Group Ltd.
    Inventors: Sergey Anderson, Udi Suissa
  • Patent number: 9448954
    Abstract: The subject matter discloses a method for data coherency; the method comprising receiving an interrupt request for interrupting a CPU; wherein the interrupt request is from one of a plurality of modules; wherein the interrupt request notifying a writing instruction of a first data by the one of the plurality of modules to a shared memory; and wherein the shared memory is accessible to the plurality of modules through a shared bus; suspending the interrupt request; validating a completion of an execution of the writing instruction; wherein the validating is performed after the suspending; and resuming the interrupt request after the completion of the execution of the writing is validated, whereby to notify a to the CPU about the completion of the execution of the writing instruction.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: September 20, 2016
    Assignee: DSP GROUP LTD.
    Inventors: Leonardo Vainsencher, Yaron P. Folk, Yuval Itkin
  • Patent number: 9425749
    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: August 23, 2016
    Assignee: DSP Group Ltd.
    Inventors: Michael Gulko, Avi Cohen
  • Patent number: 9413294
    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: Grant
    Filed: July 3, 2011
    Date of Patent: August 9, 2016
    Assignee: DSP GROUP LTD.
    Inventors: Udi Suissa, Avi Cohen
  • Patent number: 9413303
    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: August 9, 2016
    Assignee: DSP GROUP, LTD.
    Inventors: Alexander Mostov, Sergey Anderson, Udi Suissa
  • Patent number: 9344142
    Abstract: A communication system that includes a transmit antenna, a radio frequency (RF) phase shifting module, an RF combiner, a first receive antenna and a second receive antenna; wherein the first and second receive antennas are located at a same distance from the transmit antenna; wherein the first and second receive antennas are arranged to receive first and second leakage signals resulting from a transmission of RF radiation by the transmit antenna; wherein the RF phase shifting module is configured to receive signals from the first and second receive antennas, to phase shift signals from at least one of first and second receive antennas to provide intermediate RF signals; wherein the phase shift caused by the RF phase shifting module introduces a destructive phase shift between the first and second leakage signals; wherein the RF combiner is configured to add the intermediate RF signals to provide combined RF signals.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: May 17, 2016
    Assignee: DSP GROUP LTD.
    Inventors: Yaki Abecasis, Adir Levi
  • Patent number: 9338780
    Abstract: An ultra low energy (ULE) digital enhanced cordless telecommunication (DECT) base station that includes a scheduler that is arranged to dynamically determine a schedule of transmissions of broadcast messages and of paging messages to be received by DECT ULE devices; a dummy bearer generator arranged to generate dummy bearers in response to the schedule; wherein each dummy bearer comprises a multiple usage field and a usage indicative field; wherein the usage indicative field is indicative of a selected usage of the multiple usage field; wherein the selected usage purpose is selected out of at least a conveyance of a broadcast message and a conveyance of a paging message; a configuration module that is arranged to generate location information indicative of a location of at least one bit allocated within at least one dummy bearer for indicating, when flagged, of a presence of a paging message or a broadcast message aimed to at least one of the DECT ULE devices; and a transmitter that is arranged to transmit to
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: May 10, 2016
    Assignee: DSP GROUP LTD.
    Inventors: Haim Kupershmidt, Arie Gur, Jochen Kilian