Patents Assigned to DSP Group, Ltd.
  • Publication number: 20240037985
    Abstract: This disclosure provides methods, devices, and systems for object detection in images. The present implementations more specifically relate to cascaded object detection techniques. In some aspects, an object detection system may obtain a first image and perform a first object detection operation on the first image. The object detection system may select a region of interest (ROI) in the first image based at least in part on the object detection operation, the ROI being selected before the object detection operation is completed. The object detection system may obtain a second image coinciding with the ROI of the first image, the second image having a higher resolution than the first image. The object detection system may selectively perform an inferencing operation on the second image based on a result of the object detection operation.
    Type: Application
    Filed: July 28, 2023
    Publication date: February 1, 2024
    Applicant: DSP GROUP LTD.
    Inventor: Tomer KIMHI
  • Publication number: 20230421704
    Abstract: A first mobile communication device that includes a first microphone, a first speaker, and a first delay unit. The first microphone is configured to (i) receive, during a conference call, a first user first microphone signal from a first user, and (ii) output a first microphone digital signal to the first delay unit. The first user first microphone signal represents audio content outputted by the first user. The first delay unit is configured to delay, by a delay period, the first microphone digital signal to provide a delayed first user first device digital signal. The first mobile communication device is configured to output, to a mixer, the delayed first user first device digital signal. The delay period is determined based on measurements executed by at least one mobile communication device out of the first mobile communication device, a second mobile communication device and a third mobile communication device.
    Type: Application
    Filed: September 5, 2023
    Publication date: December 28, 2023
    Applicant: DSP Group Ltd.
    Inventors: Yaakov CHEN, Adoram ERELL, Dmitri Lvov
  • Patent number: 11811026
    Abstract: A coin cell powered device includes 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 an 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 a 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: Grant
    Filed: March 4, 2020
    Date of Patent: November 7, 2023
    Assignee: DSP Group Ltd.
    Inventors: Assaf Ganor, Tzahi Shalit, Levi Schultz
  • Patent number: 11700028
    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: Grant
    Filed: January 4, 2021
    Date of Patent: July 11, 2023
    Assignee: DSP Group Ltd.
    Inventors: Sergey Anderson, Nadav Snir
  • Patent number: 11659079
    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: Grant
    Filed: April 29, 2020
    Date of Patent: May 23, 2023
    Assignee: DSP Group Ltd.
    Inventor: Otmar Rengert
  • Patent number: 11521061
    Abstract: A method for distributed neural network processing, the method may include detecting, by a local neural network that belongs to a local device, and based on sensed information, an occurrence of a triggering event for executing or completing a classification or detection process; sending to a remote device, a request for executing or completing the classification or detection process by a remote device that comprises a remote neural network; wherein the remote neural network has more computational resources than the local neural network; determining by the remote device whether to accept the request; and executing or completing, by the remote device, the classification or detection process when determining to accept the request; wherein the executing or completing involves utilizing the remote neural network.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: December 6, 2022
    Assignee: DSP GROUP LTD.
    Inventors: Dmitri Lvov, Lior Blanka, Yaron Naim
  • Patent number: 11503398
    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: Grant
    Filed: February 5, 2021
    Date of Patent: November 15, 2022
    Assignee: DSP GROUP LTD.
    Inventor: Gabriel Seiden
  • Patent number: 11475888
    Abstract: A method for speech level adaptation, the method includes: (A) Receiving, by a voice interactive intelligent personal assistant, multiple input audio signals that includes first and second groups of input audio signals. (B) Buffering the multiple input audio signals. (C) Searching for a voice trigger in the first group of input audio signals. When finding the voice trigger then (D) Determining a linear gain factor to be applied on the second group of buffered audio signals, (E) Applying the linear gain factor on the second group of buffered audio signals to provide the output audio signals; and (F) applying a speech recognition process on the output audio signals to detect an audio command embedded in the output audio signals.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: October 18, 2022
    Assignee: DSP GROUP LTD.
    Inventors: Yaakov Chen, Dima Khaykin
  • Patent number: 11451194
    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: Grant
    Filed: November 24, 2020
    Date of Patent: September 20, 2022
    Assignee: DSP Group Ltd.
    Inventor: Sergey Anderson
  • Patent number: 11425261
    Abstract: A mobile communication device that comprises a microphone, a speaker, an input output port and one or more modules; wherein the microphone is configured to receive, during a conference call, (a) an acoustic signal from a first person, and (b) a cross echo from a speaker of another mobile communication device that participates in the conference call, the cross echo is generated as a result of the acoustic signal from the first person; and wherein the one or more modules are configured to cancel the cross echo based, at least in part, of the acoustic signal of the first person.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: August 23, 2022
    Assignee: DSP GROUP LTD.
    Inventors: Yaakov Chen, Adoram Erell, Dimitri Lvov
  • Patent number: 11418156
    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: Grant
    Filed: August 31, 2020
    Date of Patent: August 16, 2022
    Assignee: DSP GROUP LTD.
    Inventor: Sergey Anderson
  • Patent number: 11360567
    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: Grant
    Filed: June 8, 2020
    Date of Patent: June 14, 2022
    Assignee: DSP GROUP LTD.
    Inventor: Nir Michael
  • Publication number: 20220158596
    Abstract: There is provided a RF-DAC that may include (i) a first PAM that includes a first group of first power amplifiers of different amplifications, (ii) a second PAM that includes a second group of second power amplifiers of different amplifications; (iii) a load that includes an output port and a transformer; (iv) power amplifiers control units, and a transformer control unit.
    Type: Application
    Filed: November 15, 2021
    Publication date: May 19, 2022
    Applicant: DSP Group Ltd.
    Inventor: Sergey Anderson
  • Patent number: 11295747
    Abstract: A method and a voice processor that includes (i) an input that is configured to receive of audio signals that represent audio, (ii) a wake word detection circuit, (iii) a first buffer that is configured to store at least wake word signals and prebuffer signals, and (iv) a communication module that is configured to (a) output, over an interrupt port, an interrupt request to an application processor, following a detection of the wake word signals, (b) following an acceptance of the application processor to receive content, access the first buffer and retrieve the prebuffer signals and the wake word signals; and (b) output the content, over the I2S port, to the application processor. The content includes the wake word signals, the prebuffer signals, and query or command signals.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: April 5, 2022
    Assignee: DSP GROUP LTD.
    Inventor: Avi Keren
  • 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