Patents Assigned to Integrated Device Technology
  • Patent number: 10637442
    Abstract: An apparatus includes a bypass circuit a resistor circuit and multiple staggered circuits. The bypass circuit may have a predetermined number of a plurality of transistors connected in series between an input node and an output node. The resistor circuit may have a given number of resistors connected in series between the input node and the output node. Adjoining pairs of the resistors may be connected at given nodes. The staggered circuits may be connected between the given nodes and either the input node or the output node. Each staggered circuit may have a respective number of the transistors connected in series. The bypass circuit, the resistor circuit and the staggered circuits may form part of a bridge attenuator.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: April 28, 2020
    Assignee: Integrated Device Technology, Inc.
    Inventor: Shawn Bawell
  • Patent number: 10637160
    Abstract: An apparatus includes a phased array antenna panel and one or more beam former circuits. The phased array antenna panel generally comprises a plurality of antenna elements. The plurality of antenna elements are generally arranged in one or more groups. The one or more beam former circuits may be mounted on the phased array antenna panel. Each beam former circuit is generally coupled to a respective group of the antenna elements. Each beam former circuit generally comprises a plurality of transceiver channels comprising a transmit channel and a receive channel. The phased array antenna panel is generally configured to distribute a control signal to each of the beam former circuits. Each of the transceiver channels is generally configured to switch between a transmit mode and a receive mode in response to the control signal.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: April 28, 2020
    Assignee: Integrated Device Technology, Inc.
    Inventors: Samet Zihir, Tumay Kanar
  • Patent number: 10608471
    Abstract: A multimode receiver can include on or more of an over-voltage protection circuit or a high frequency mode switch. As such, some embodiments of a multi-mode receiver includes a rectifier; a high frequency circuit coupled to the rectifier; a low frequency circuit coupled to the rectifier; and a switching circuit coupled to disable at least a portion of the low frequency circuit while the multi-mode receiver operates in high frequency mode. In some embodiments, the multimode receiver further includes a high-voltage protection circuit coupled to the high frequency circuit that detunes the high frequency circuit when a high-voltage condition is detected.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: March 31, 2020
    Assignee: Integrated Device Technology, Inc.
    Inventor: Mehmet Nalbant
  • Patent number: 10585149
    Abstract: In some embodiments, optimizing a coil design is provided. In particular, a method of providing an optimized position locating sensor coil design includes receiving a coil design, the coil design including geometric positions of a transmit coil and geometric positions of receive coils; linearizing one or more of the receive coils; and offset compensating the one or more of the receive coils. The linearization determines a geometric correction array for adjusting the geometric position of one of the receive coils. The offset correction includes determining a geometric shift to shift the geometric position of the one of the receive coils.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: March 10, 2020
    Assignee: Integrated Device Technology, Inc.
    Inventor: Gentjan Qama
  • Patent number: 10580239
    Abstract: An electronic lock that interacts with a mobile device is presented. In accordance with some embodiments, an electronic lock includes a wireless power receiver configured to receiver power from a mobile device; a processor coupled to receive power from the wireless power receiver; a memory coupled to the processor and to receive power from the wireless power receiver; a communication unit coupled to the processor and to receive power from the wireless power receiver, the communication unit configured to communicate with the mobile device; and an actuator coupled to the processor and to receive power from the wireless power receiver. The processor executes instructions stored in a memory for authenticating the mobile device, and providing signals to the actuator according to instructions received from the mobile device once it is authenticated. The mobile device provides power to the electronic lock and instructs it to lock or unlock a locking mechanism.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: March 3, 2020
    Assignee: Integrated Device Technology, Inc.
    Inventors: Christopher Stephens, Jianbin Hao, Pietro Polidori, Giulio Spinelli
  • Patent number: 10579916
    Abstract: In accordance with aspects of the present invention, a magnetic secured transmission system is presented. A magnetic secure transmission (MST) system can include a full-bridge driver that includes four transistors configured to regulate current through a coil; and a driving controller coupled to drive the full-bridge driver at a high frequency. In some embodiments, the transistors in the full bridge regulator are driven with a high frequency pulsed-wave modulated (PWM) signal to control the current through the coil. A method of magnetic secured transmission (MST) of MST data according to some embodiments includes receiving the MST data; generating coil data in response to the MST data; driving transistors in a full bridge at a high frequency to drive current through a coil according to the coil data.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: March 3, 2020
    Assignee: Integrated Device Technology, Inc.
    Inventors: Rui Liu, Tao Qi, Lijie Zhao
  • Patent number: 10561049
    Abstract: An EMI shield for a wireless power transmitter is presented. The EMI shield includes a patterned metallic layer that when positioned over a transmitting coil of the wireless power transmitter capacitively couples to the transmitting coil to capture electromagnetic radiation while allowing magnetic power to pass. In some embodiments, the patterned metallic layer may be a comb filter.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: February 11, 2020
    Assignee: Integrated Device Technology, Inc.
    Inventors: Alfredo Saab, David Wilson
  • Patent number: 10554061
    Abstract: A charging system that includes a switching control circuit coupled to four series-coupled MOSFET transistors; a flying capacitor coupled across two of the four series-coupled MOSFET transistors; and node between the two of the four series coupled transistors that couples to an output inductor to form a buck regulator is presented. Embodiments of the charging system can have increased efficiency, can reduce the size and inductance of the output inductor, and can be produced with a low voltage process.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: February 4, 2020
    Assignee: Integrated Device Technology, Inc.
    Inventors: Rui Liu, Gustavo James Mehas, Lijie Zhao, Tae Kwang Park, Zhitong Guo
  • Patent number: 10534322
    Abstract: A multi-stop time-to-digital converter (TDC, 110) includes single-stop TDCs (510) connected to output nodes of a ring oscillator (504). Other features and embodiments are also provided.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: January 14, 2020
    Assignee: Integrated Device Technology, Inc.
    Inventor: Min Chu
  • Patent number: 10523041
    Abstract: In accordance with aspects of the present invention, a wireless power integrated circuit is presented. The wireless power integrated circuit includes a wireless power receiver circuit; a battery charger circuit; and a microprocessor coupled to control the wireless power receiver and the battery charger circuit.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: December 31, 2019
    Assignee: Integrated Device Technology, Inc.
    Inventor: Rui Liu
  • Patent number: 10511222
    Abstract: A wireless power transmitter comprises a bridge inverter including a first switch and a second switch coupled together with a first switching node therebetween, and a first capacitor coupled to the first switching node. The transmitter further includes control logic configured to control the first switch and the second switch according to an operating frequency to generate an AC power signal from a DC power signal, and a resonant tank operably coupled to the first switching node of the bridge inverter, the resonant tank configured to receive the AC power signal and generate an electromagnetic field responsive thereto. A method for operating the wireless power transmitter and a method for making the wireless power transmitter are also disclosed.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: December 17, 2019
    Assignee: Integrated Device Technology, Inc.
    Inventor: Mehmet K. Nalbant
  • Patent number: 10468179
    Abstract: An inductor is disclosed that includes an arrangement of lobes, each of the lobes in the arrangement of lobes including a generator, the arrangement of lobes interconnected such that, when currents are provided by each generator in the arrangement of lobes, each lobe in the arrangement of lobes produces a magnetic field with a defined polarity relative to the arrangement of lobes. When the arrangement of lobes are appropriately interconnected, the magnetic field from the arrangement of lobes can be canceled.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: November 5, 2019
    Assignee: Integrated Device Technology, Inc.
    Inventor: Benedykt Mika
  • Patent number: 10438431
    Abstract: An electronic lock that interacts with a mobile device is presented. In accordance with some embodiments, an electronic lock includes a wireless power receiver configured to receiver power from a mobile device; a processor coupled to receive power from the wireless power receiver; a memory coupled to the processor and to receive power from the wireless power receiver; a communication unit coupled to the processor and to receive power from the wireless power receiver, the communication unit configured to communicate with the mobile device; and an actuator coupled to the processor and to receive power from the wireless power receiver. The processor executes instructions stored in a memory for authenticating the mobile device, and providing signals to the actuator according to instructions received from the mobile device once it is authenticated. The mobile device provides power to the electronic lock and instructs it to lock or unlock a locking mechanism.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: October 8, 2019
    Assignee: Integrated Device Technology, Inc.
    Inventors: Christopher Stephens, Jianbin Hao, Pietro Polidori, Giulio Spinelli
  • Patent number: 10401899
    Abstract: A register clock driver for a DDR5 memory is presented. A register clock driver (RCD) can include a logic having one or more input channels, each of the one or more input channels receiving input signals; and a plurality of ranked output ports associated with each of the one or more input channels, the logic providing the input signals received on each of the one or more input channels to the associated plurality of ranked output ports according to control signals. The RCD can operate in a default mode, wherein input signals from the input channels are output to both of the output ports associated with that channel, or can operate in a non-default mode where input signals from the input channels are sent to the appropriate ranked output port associated with that channel. In either case, unused signaling on the output ports is held high.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: September 3, 2019
    Assignee: Integrated Device Technology, Inc.
    Inventor: Shwetal Arvind Patel
  • Patent number: 10401443
    Abstract: A system for mapping magnetic fields around a transmission coil is presented. The method includes selecting a selected induction loop from an array of selectable induction loops arranged adjacent the transmission coil, detecting current from the selected induction loop, the current being generated by a magnetic field from a transmission coil, to obtain measured values; and comparing measured values with expected values.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: September 3, 2019
    Assignee: Integrated Device Technology, Inc.
    Inventor: David Wilson
  • Patent number: 10389572
    Abstract: Wide band quadrature signal generation includes a frequency synthesizer generating a LO or 2×LO signal, a polyphase filter coupled to receive the LO signal and generate first in-phase and quadrature LO signals, a 2:1 frequency divider coupled to receive the 2×LO signal and generate second in-phase and quadrature LO signals, and a LO signal selector for selecting either the first or second in-phase LO signals as an output in-phase LO signal and either the first or second quadrature LO signals as an output quadrature LO signal based on an output frequency. In some embodiments, when the output frequency is above a threshold, the first in-phase and quadrature LO signals are selected as the output in-phase and quadrature LO signals and when the output frequency is at or below the threshold, the second in-phase and quadrature LO signals are selected as the output in-phase and quadrature LO signals.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: August 20, 2019
    Assignee: Integrated Device Technology, Inc.
    Inventors: Chuying Mao, Ran Li, Jean-Marc Mourant
  • Publication number: 20190243312
    Abstract: A time-to-digital converter (TDC, 110) obtains a Start signal to indicate the start of an event, and a Stop signal whose assertion indicates the stop of the event. The Stop signal can be asserted multiple times due to false indications of the event stop. The TDC continuously monitors the Stop signal to generate a separate digital value (T.j_i) for the duration from the event's starting time to each assertion of the Stop signal. The digital values can be analyzed to select the true duration of the event. Other features and embodiments are also provided.
    Type: Application
    Filed: February 6, 2018
    Publication date: August 8, 2019
    Applicant: Integrated Device Technology, Inc.
    Inventors: Min Chu, Jagdeep Singh BAL
  • Patent number: 10374786
    Abstract: Methods of estimating frequency skew in a packet network include determining a representation of a packet delay variation (PDV) sequence from an initial estimate of frequency skew between master and slave devices in the packet network and timestamps transmitted therebetween. An operation is performed to extract a statistical mode from an empirical probability distribution function (PDF) of the representation of the PDV sequence, where the statistical mode corresponds to a value at which the PDF has its maximum value. The, an updated estimate of the frequency skew is generated by determining a slope between timestamps at indices associated with a plurality of points in the representation of the PDV sequence that are within a range of the statistical mode.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: August 6, 2019
    Assignee: Integrated Device Technology, Inc.
    Inventors: Frederic Mustiere, Russell Smiley, Felix Duong, Alain Trottier
  • Patent number: 10360485
    Abstract: According to another embodiment, a system includes a driver circuit that drives a first output and a second output; a coil coupled between the first output and the second output such that the driver circuit drives current through the coil in response to control signals; and a programmable slew circuit coupled to the driver circuit. In some embodiments, a switch is coupled between the first output and the coil. In some embodiments an over-voltage protection circuit is coupled to protect the driver circuit.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: July 23, 2019
    Assignee: Integrated Device Technology, Inc.
    Inventors: Rui Liu, Tao Qi, Lijie Zhao, Gustavo James Mehas, Tae Kwang Park, Zhitong Guo, Siqiang Fan
  • Patent number: 10355525
    Abstract: An inductive wireless power transfer device comprises a transmitter that comprises a transmit coil configured to generate a wireless power signal to a coupling region in response to an input voltage, and a modulator configured to modulate the wireless power signal and encode data with the wireless power signal to establish a back-channel communication link from the transmitter to a receiver. An inductive wireless power receiving device comprises a receiver that comprises a receive coil configured to generate a time varying signal in response to receiving a modulated wireless power signal from a transmitter in a coupling region, and a demodulator configured to demodulate the modulated wireless power signal from an established back-channel communication link from the transmitter to a receiver. Related inductive wireless power transfer systems and methods for back-channel communication from the transmitter to the receiver of an inductive wireless power transfer system are disclosed.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: July 16, 2019
    Assignee: Integrated Device Technology, Inc.
    Inventors: Manjit Singh, Siamak Bastami, David Wilson