Patents Assigned to DSP Group
  • Patent number: 11238887
    Abstract: A processor, that may include at least one neural network that comprises at least one leaky spiking neuron; wherein the at least one leaky spiking neuron is configured to directly receive an input pulse density modulation (PDM) signal from a sensor; wherein the input PDM signal represents a detected signal that was detected by the sensor; and wherein the at least one neural network is configured to process the input PDM signal to provide an indication about the detected input signal.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: February 1, 2022
    Assignee: DSP GROUP LTD.
    Inventor: Moshe Haiut
  • Patent number: 11222654
    Abstract: A method for voice detection, the method may include (a) generating an in-ear signal that represents a signal sensed by an in-ear microphone and fed to a feedback active noise cancellation (ANC) circuit; (b) generating at least one additional signal, based on at least one out of a playback signal and a pickup signal sensed by a voice pickup microphone; and (c) generating a voice indicator based on the in-ear signal and the at least one additional signal.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: January 11, 2022
    Assignee: DSP GROUP LTD.
    Inventors: Assaf Ganor, Ori Elyada
  • Patent number: 11163531
    Abstract: A method and a MAC unit that may include accumulation unit and a multiplier. A accumulation unit that includes a first part, a second part and a third part. The first part may calculate a truncated sum. The second part may be configured to (a) receive, during each calculation cycle, a carry out of an add operation performed during a calculation cycle, (b) receive a sign bit of an intermediate product calculated during the calculation cycle; and (c) calculate, by the counter logic, a counter logic value, and (d) convert, after a start of a last calculation cycle of the calculation cycles, an output value of the counter logic to an intermediate value having a two's complement format. The third part may be configured to calculate an output value of the MAC unit based on the intermediate value and a truncated sum calculated by the first part of the accumulation unit.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: November 2, 2021
    Assignee: DSP GROUP LTD.
    Inventors: Moshe Haiut, Assaf Ganor
  • Patent number: 11153690
    Abstract: A micro-electro-mechanical system (MEMS) electrostatic speaker that comprises an array of cells, wherein each cell comprises an upper stator, a membrane, a lower stator and supporting elements configured to support the upper stator, the membrane and the lower stator; wherein a distance between the upper stator and the lower stator of each cell is of microscopic scale.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: October 19, 2021
    Assignee: DSP GROUP LTD.
    Inventors: Haim Kuperschmidt, Gabriel Seiden, Igor Sokolov, Aviad Zamir
  • Patent number: 11128371
    Abstract: A DECT system and a method for communicating between a DECT fixed point and multiple DECT portable points. The method may include step (a) of communicating between a master communication processor of the DECT fixed point and one or more DECT portable points during master communication slots. The method may also include step (b) of communicating between a slave communication processor of the DECT fixed point and at least one of the DECT portable points during slave communication slots. Step (a) and step (b) are executed according to an allocation of master communication slots and slave communication slots, wherein the allocation facilitates concurrent slave communication processor communications and master communication processor communications.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: September 21, 2021
    Assignee: DSP GROUP LTD.
    Inventors: Nir Kalfus, Haim Ben-Sinior, Otmar Rengert
  • Patent number: 11120795
    Abstract: A method for noise cancellation, the method may include detecting a voice trigger or receiving an indication regarding an occurrence of a voice trigger; searching, based at least on a timing of occurrence of the voice trigger, for at least one of a noise-period and a voice-period; when finding a noise period then updating one or more noise parameters based on one or more features of sensed audio signals received during the noise period; when finding a voice period then updating one or more voice parameters based on one or more features of sensed audio signals received during the voice period; estimating, based on the one or more noise parameters and the one or more voice parameters, a probability that voice is present at one or more subsequent periods; and cancelling noise at the one or more subsequent periods, based on the voice presence probability.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: September 14, 2021
    Assignee: DSP GROUP LTD.
    Inventor: Adoram Erell
  • Publication number: 20210266032
    Abstract: A TX/RX RF switch that may include a reception path; and a transmission path that has an antenna port, a transmission input port, and transmission transistors. The transmission transistors have source-bulk connections. The reception path has an antenna port, a reception output port, and reception transistors. The reception path includes a first reception transistor that is closest to the antenna port, out of the reception transistors, and has a source-bulk connection, and at least one other reception transistor that has a bulk-to-ground connection. The reception transistors and the transmission transistors are CMOS transistors.
    Type: Application
    Filed: January 4, 2021
    Publication date: August 26, 2021
    Applicant: DSP Group Ltd.
    Inventors: Sergey Anderson, Nadav SNIR
  • Publication number: 20210250675
    Abstract: A method for in-ear detection, the method may include transmitting test signals, by a speaker of an earbud, during a test period, and while the earbud is operating at a first operational mode, wherein the test signals comprise at least one first test signal within a first frequency range, at least one second test signal within a second frequency range, and at one third test signal within a third frequency range; wherein the first frequency range, the second frequency range and the third frequency range differ from each other and are within a human auditory range; generating, by a feedback microphone of the earbud, sensed information that is indicative of audio signals sensed by the feedback microphone as a result of the transmitting of the test signals; and determining whether the earbud is located within an ear of a person, wherein the determining is based on the sensed information and a reference out of ear spectrum.
    Type: Application
    Filed: February 5, 2021
    Publication date: August 12, 2021
    Applicant: DSP Group Ltd.
    Inventor: Gabriel Seiden
  • Patent number: 11087205
    Abstract: A neural network that may include multiple layers of neural cells; wherein a certain neural cell of a certain layer of neural cells may include a first plurality of one-bit inputs; an adder and leaky integrator unit; and an activation function circuit that has a one-bit output; wherein the first plurality of one-bit inputs are coupled to a first plurality of one-bit outputs of neural cells of a layer that precedes the certain layer; wherein the adder and leaky integration unit is configured to calculate a leaky integral of a weighted sum of a number of one-bit pulses that were received, during a time window, by the first plurality of one-bit inputs; and wherein the activation function circuit is configured to apply an activation function on the leaky integral to provide a one-bit output of the certain neural cell.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: August 10, 2021
    Assignee: DSP GROUP LTD.
    Inventor: Moshe Haiut
  • Publication number: 20210241101
    Abstract: A method for controlling a bias of a neural network, the method may include training the neural network by using a loss function that is responsive to classes of a classification process and sensitivity input values thereby setting the bias.
    Type: Application
    Filed: January 4, 2021
    Publication date: August 5, 2021
    Applicant: DSP Group Ltd.
    Inventors: Dimitri Lvov, Maor Shliefer, Uri Tuval
  • Publication number: 20210184631
    Abstract: A low noise amplifier that may include a first input port, a second input port, a first capacitor, a second capacitor, a first variable capacitor, a second variable capacitor, an inductor, a bias circuit, a tuning circuit, a first output circuit having a first output, a second output circuit having a second output; wherein the first input port is electrically coupled to a first end of the second variable capacitor, to a first end of the first capacitor, to an input of the first output circuit, and to a first port of the inductor; wherein the second input port is electrically coupled to a second end of the first variable capacitor, to a second end of the second capacitor, to an input of the second output circuit, and to a second port of the inductor; wherein a first port of the first varactor is electrically coupled to a second end of the first capacitor; wherein a second port of the second varactor is electrically coupled to a first end of the second capacitor; wherein the bias circuit is configured to supply
    Type: Application
    Filed: November 24, 2020
    Publication date: June 17, 2021
    Applicant: DSP Group Ltd.
    Inventor: Sergey Anderson
  • Publication number: 20210176811
    Abstract: A wireless audio system that may include a first wireless transceiver that is configured to receive audio information from an audio source over a bi-directional wireless link; a second wireless transceiver that is configured to sniff audio information sent over the bi-directional wireless link; and wherein the first and second wireless transceivers are configured to share sniff enabling information, over a shared link and before an establishment of the bi-directional wireless link.
    Type: Application
    Filed: November 13, 2020
    Publication date: June 10, 2021
    Applicant: DSP Group Ltd.
    Inventors: Dotan Sokolov, Shlomi Cohen, Venkatesh Gangaiah
  • Patent number: 10997975
    Abstract: A enhanced vehicle key and a method for voice activation, the method may include supplying power to a low power trigger sensor of a enhanced vehicle key, by a power source of the enhanced vehicle key; wherein the supplying of power is preceded by powering the enhanced vehicle key while a part of the enhanced vehicle key is positioned within an ignition switch of a vehicle; detecting, by the low power trigger sensor, a voice trigger; awakening, following the detection, a processor of the enhanced vehicle key; searching, by the processor, for a voice command; and when finding the voice command then executing the voice command.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: May 4, 2021
    Assignee: DSP GROUP LTD.
    Inventors: Ofer Elyakim, Tali Chen, Lior Blanka
  • Publication number: 20210091730
    Abstract: A low noise amplifier that includes a first cascode, a second cascode, an input circuit, an output node, a first switch, and a second switch. A source of a first common gate transistor and a drain of a first common source transistor of the first cascode are coupled to a first node of the low noise amplifier. The output node is coupled to a drain of the first common gate transistor, and to a drain of a second common gate transistor of the second cascode, thereby coupling the first cascode and the second cascode to a power supply via a load. The first switch is coupled between a gate of the first common gate transistor and the power supply. The second switch is coupled between the first node and the power supply. The first switch is configured to be open and the second switch is configured to be closed when the low noise amplifier operates at a first operational node.
    Type: Application
    Filed: August 31, 2020
    Publication date: March 25, 2021
    Applicant: DSP Group Ltd.
    Inventor: Sergey Anderson
  • Publication number: 20210089919
    Abstract: A method for adjusting a pruned neural network, the method may include adjusting weights of the pruned neural network to provide an adjusted neural network. The pruned neural network was generated by a pruning process and is associated with pruning related weights. The pruning related weights include survived weights and erased weights. A survived weight was assigned a non-zero value by the pruning process. An erased weight was assigned a zero value by the pruning process. The adjusting may include setting values of some of the adjusted weights based on values of at least one of the pruning related weights.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 25, 2021
    Applicant: DSP Group Ltd.
    Inventor: TOMER MALACH
  • Patent number: 10903806
    Abstract: An integrated circuit that includes a die with an active radio frequency (RF) unit embedded thereon; a first port for receiving an output signal from the active RF unit; a harmonic filter that comprises a first harmonic filter inductor; and a first RF inductive load that is electrically coupled to the first port and is magnetically coupled to the first harmonic filter inductor.
    Type: Grant
    Filed: September 18, 2016
    Date of Patent: January 26, 2021
    Assignee: DSP GROUP LTD.
    Inventors: Sergey Anderson, Ron Pongratz
  • Publication number: 20200409468
    Abstract: A true wireless headset that may include a housing, a microphone that is mechanically coupled to the housing, wherein the microphone is configured to detect sound and output detection signals indicative of the sound, a tap detector that is configured to receive a first representation of the detection signals, and to process the first representation of the detection signals to determine whether a user tapped on the housing; and at least one additional circuitry that is configured to respond to a determination that the user tapped on the housing.
    Type: Application
    Filed: June 8, 2020
    Publication date: December 31, 2020
    Applicant: DSP Group Ltd.
    Inventor: Nir Michael
  • Publication number: 20200351397
    Abstract: A method for receiving audio broadcasts during a digital enhanced cordless telecommunication (DECT) frame, the method may include (a) opening, during a DECT frame and by a portable point (PP) that is a potential recipient of the audio broadcasts from a fixed part (FP), multiple reception windows that are spaced apart from each other and are allocated to receive signals related to audio broadcast; (b) receiving received signals, by the PP and during the multiple spaced apart reception windows; and (c) processing, by the PP, the received signals.
    Type: Application
    Filed: April 29, 2020
    Publication date: November 5, 2020
    Applicant: DSP Group Ltd.
    Inventor: Otmar Rengert
  • Publication number: 20200313246
    Abstract: A coin cell powered device that includes a unit and one or more interfaces that are configured to interface between the unit, the cell coin and an external capacitor. The unit may include a regulator, a transmitter and a charge pump. The transmitter is configured to transmit signals during a transmission period while receiving power from the regulator, the power originated from the external capacitor. The charge pump is configured to perform, during a charging period, a charging process for charging the external capacitor to a charged voltage that exceeds a voltage of the cell coin, wherein the charging process may include iterations of (a) charging a charge pump capacitor by the coin cell, and (b) discharging the charge pump capacitor thereby charging the external capacitor. The capacitance of the charge pump capacitor is a fraction of a capacitance of the external capacitor. The duration of the charging period exceeds a duration of the transmission period.
    Type: Application
    Filed: March 4, 2020
    Publication date: October 1, 2020
    Applicant: DSP Group Ltd.
    Inventors: Assaf Ganor, Tzahi Shalit, Levi Schultz
  • Publication number: 20200292656
    Abstract: There may be provided a method for proximity sensing by a computerized device, the method may include transmitting, by at least one transmitter of a computerized device and during at least one transmission window, one or more transmitted signals, the one or more transmitted signals comprise a transmitted ultrasonic signal; operating at least one receiver of the computerized device to receive, during at least one reception window, one or more received signals that were reflected or scattered due to the transmitting; processing the received signals to provide a processing result, when receiving the received signals by the receiver during the at least one reception window; and determining a proximity of one or more objects to the computerized device based on at least one out of (a) an absence of received signals during the at least one receive window, and (b) the processing results
    Type: Application
    Filed: March 9, 2020
    Publication date: September 17, 2020
    Applicant: DSP Group Ltd.
    Inventor: Dmitry Lvov