Patents Examined by Lee Nguyen
  • Patent number: 11468854
    Abstract: Aspects of the subject technology relate to control circuitry for light-emitting diodes. The control circuitry may include feedforward control and a feedback control for a power supply for the light-emitting diodes. The feedforward control may include host circuitry for the device that determines a maximum zone current, a maximum row current, and the maximum row-to-row current step for an upcoming backlight frame while a current backlight frame is being executed. A headroom voltage for the upcoming backlight frame is determined based on the maximum zone current, the maximum row current, and/or the maximum row-to-row current step and provided to the power supply so that the power supply can settle at a corresponding supply voltage before the upcoming backlight frame is executed. The feedback control utilizes dynamic thresholds determined for each backlight frame to fine tune the feedforward-determined headroom voltage.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: October 11, 2022
    Assignee: Apple Inc.
    Inventors: Vehbi Calayir, James E. Brown
  • Patent number: 11373607
    Abstract: A driving method of display device for a display device capable of reducing flicker due to refresh rate variation includes: determining whether a processor of the display device is generating a vertical blank interval of an image signal, wherein said vertical blank interval is next to a last frame data period thereof, and the last frame data period is for a last frame to be displayed by a display panel; and activating a data line of the display panel with a balancing voltage related to data of a line of the last frame when the processor is generating the vertical blank interval, wherein a plurality of sub-pixels of the display panel connects to the data line, the data of the line of the last frame are sequentially transmitted to the plurality of sub-pixels in the last frame data period for displaying the last frame. Said display device is also disclosed.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: June 28, 2022
    Assignee: Novatek Microelectronics Corp.
    Inventors: Yu-Hung Su, Vans Shih, Yen-Tao Liao
  • Patent number: 11317265
    Abstract: Systems and methods for facilitating secure localized communications in a local communications network are disclosed. Exemplary implementations may: detect proximity of portable communication devices; pair a central communication hub with a first portable communication device and pair the central communication hub with a second portable communication device; receive instructions, from a first client computing platform that is associated with a first supervisory user; generate the one or more messages for transmission to the one or more portable communication devices; and transmit the one or more messages to the one or more portable communication devices via the secondary wireless communication links such that a first message is transmitted to the first portable communication device.
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: April 26, 2022
    Assignee: H.M. Electronics, Inc.
    Inventors: Maisha Makeda Cox, Michael Scott Hubbard
  • Patent number: 11309860
    Abstract: Embodiments presented herein relate to isolating a receiver circuit of an electronic device from a transmission signal and from a noise signal at a frequency range of a received signal. To do so, an isolation circuit is disposed between the receiver circuit and a transmission circuit. The isolation circuit may include multiple variable impedance devices and one or more antennas. The impedances of the variable impedance devices and the one or more antennas may be balanced such that the receiver circuit is effectively removed from the transceiver circuitry and isolated from the transmission signal. The impedance of the variable impedance devices and the one or more antennas may also be configured to isolate the receiver circuit from a noise signal generated at the transmission circuit having a frequency in the range of the receive signal.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: April 19, 2022
    Assignee: Apple Inc.
    Inventors: Oliver Georg Dorn, Joonhoi Hur, Rastislav Vazny
  • Patent number: 11304134
    Abstract: A radio frequency system based on millimeter wave communication, a method for adjusting transmit power, and a terminal are provided. The radio frequency system includes a Doherty power amplification unit, an antenna array, and a micro control unit MCU, where an output end of the Doherty power amplification unit is connected to an input end of the antenna array, a control end of the Doherty power amplification unit and a control end of the antenna array are both connected to the MCU, and the MCU controls a radiation direction of an antenna in the antenna array; and the Doherty power amplification unit includes two power amplifiers, saturation power of the two power amplifiers is equal, a switch controller is connected in series to one of the two power amplifiers, and the MCU controls transmit power of the Doherty power amplification unit by controlling opening and closing of the switch controller.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: April 12, 2022
    Assignee: VIVO MOBILE COMMUNICATION CO., LTD.
    Inventor: Kun Wang
  • Patent number: 11303311
    Abstract: A radio frequency waveguide communication system includes a controller configured to output a radio frequency signal, and at least one connected node configured to output a node signal indicative of monitored parameter of a machine. The radio frequency waveguide communication system includes a waveguide and a radio frequency interface module. The waveguide is in signal communication with the controller and is configured to guide the radio frequency signal toward the at least one connected node. The radio frequency interface module is configured to establish signal communication between the controller and the at least one connected node, and includes at least one detachable portion configured to detach from the at least one waveguide.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: April 12, 2022
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Jonathan Gilson, Joseph V. Mantese, Gurkan Gok, Goran Djuknic, Coy Bruce Wood, Joseph B. Wysocki, John A. Needham
  • Patent number: 11296738
    Abstract: An RF module includes a switch IC on a surface of a module substrate and a passive circuit provided in and/or on the module substrate. The switch IC includes a high-frequency circuit on an IC substrate and a digital control circuit. In a plan view of the IC substrate, the digital control circuit is surrounded by the high-frequency circuit. The high-frequency circuit includes analog ground electrodes in a boundary portion with the digital control circuit in the high-frequency circuit to surround the digital control circuit in the plan view.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: April 5, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yusuke Naniwa, Hideki Muto
  • Patent number: 11283426
    Abstract: An electrical device (100) that comprises at least one signal filter (104) comprising a plurality of mechanical resonators (106 108, 110) in a substrate (102) and at least one further mechanical resonator (112) in the substrate (102) configured to oscillate at a reference frequency of an oscillator signal. An electrical system (300) comprising an electrical oscillator (306) a transceiver (302) and an antenna (310), and an electrical device (100). A method (1300) for providing an electrical device (100).
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: March 22, 2022
    Assignee: Apple Inc.
    Inventors: Igal Kushnir, Harry Skinner, Bernhard Raaf, Sharon Malevsky, Gil Horovitz
  • Patent number: 11283909
    Abstract: An electronic device according to an embodiment may include: at least one processor; a first slot connected to the at least one processor and configured to receive a first SIM which is detachable; a second slot selectively connectable to the at least one processor and configured to receive a second SIM which is detachable; an eSIM selectively connectable to the at least one processor and included in the electronic device; and a switch configured to connect at least one of the second slot or the eSIM to the at least one processor, wherein the at least one processor is configured to: detect an event for using the eSIM while the at least one processor is connected to the second slot based on the switch being in a first state; and based on detecting the event for using the eSIM, control the switch to change from the first state to a second state, wherein the at least one processor may be connected to the eSIM the switch being in the second state.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: March 22, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Youcheol Moon
  • Patent number: 11277164
    Abstract: An amplifier module is disposed between a wireless communication antenna and a body unit of a wireless communication apparatus and connected to the antenna and the body unit through a wiring member. The amplifier module includes an antenna-side terminal connected to the antenna, a body-side terminal connected to the body unit, an amplification circuit disposed between the antenna-side terminal and the body-side terminal, an antenna detection circuit configured to detect electric characteristics of the antenna-side terminal, and a characteristic variable circuit configured to change electric characteristics of the body-side terminal based on the electric characteristics of the antenna-side terminal detected by the antenna detection circuit.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: March 15, 2022
    Assignee: ALPS ALPINE CO., LTD.
    Inventors: Eita Nakayama, Kazushi Kofune, Mutsumi Yoshida
  • Patent number: 11276920
    Abstract: Provided is an antenna structure that can be attached with ease and is likely to blend into environments. An antenna structure 1 includes: plural antenna elements 10 configured individually and arranged discretely; and a base 60 which adheres to at least side surfaces of the antenna elements 10, in which the plural antenna elements 10 are embedded and fixed, and which forms a plate-like outer shape.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: March 15, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Tomoyuki Soga, Akira Maruyama, Hiroki Hagiwara, Akihiko Yazaki, Takaya Yamauchi, Shingo Moriyasu
  • Patent number: 11265028
    Abstract: A radio frequency module includes a first transmission power amplifier configured to amplify a radio frequency signal of a first communication band, a second transmission power amplifier configured to amplify a radio frequency signal of a second communication band, and a module board which includes a first principal surface and a second principal surface on opposite sides of the module board, and on which the first transmission power amplifier and the second transmission power amplifier are mounted. The first transmission power amplifier is disposed on the first principal surface, and the second transmission power amplifier is disposed on the second principal surface.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: March 1, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Takanori Uejima
  • Patent number: 11264703
    Abstract: A chip antenna includes a first ceramic substrate, a second ceramic substrate disposed to oppose the first ceramic substrate, a first patch, disposed on the first ceramic substrate, configured to operate as a feed patch, a second patch, disposed on the second ceramic substrate, configured to operate as a radiation patch, an insertion member disposed between the first ceramic substrate and the second ceramic substrate, and a shielding layer disposed on a side surface of the insertion member.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: March 1, 2022
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sung Nam Cho, Sung Yong An, Jae Yeong Kim, Ju Hyoung Park
  • Patent number: 11258472
    Abstract: Methods and devices for radio frequency (RF) loopback for transceivers are described. A transceiver for communicating RF signals with a target device may transmit signals at a transmit frequency and receive signals at a (different) receive frequency. The transceiver may include a waveguide diplexer for separating and combining signals based on frequency. The transceiver may be configured to couple a loopback signal from a common port of the waveguide diplexer; the loopback signal may be based on a transmit signal. The transceiver may include a loopback translator to translate the loopback signal from the transmit frequency to the receive frequency and provide the translated loopback signal to a receiver used for receiving signals from the target device. The receiver may compare the translated loopback signal with a representation of the transmit signal to generate a compensation signal. A transmitter may use the compensation signal to adjust subsequent transmit signals.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: February 22, 2022
    Assignee: VIASAT, Inc.
    Inventors: Kenneth V. Buer, Ramanamurthy V. Darapu, Martin Gimersky, David E. Pettit, Bill T. Agar
  • Patent number: 11258474
    Abstract: The invention discloses a method for reducing an SAR value of a mobile terminal, a storage medium and a mobile terminal. The method comprises: detecting and comparing signal strengths of an upper antenna and a lower antenna of the mobile terminal in real time during a call; and when it is detected that the signal strength of the upper antenna of the mobile terminal is greater than that of the lower antenna, switching the communication work of the mobile terminal to the upper antenna, and reducing the radio frequency transmitting power of the upper antenna. By adoption of the scheme, the SAR value of the mobile terminal can be reduced.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: February 22, 2022
    Assignee: HuiZhou TCL Mobile Communication Co., Ltd.
    Inventor: Wei Chen
  • Patent number: 11251751
    Abstract: A signal mixing circuit device and a receiver are disclosed, the signal mixing circuit device comprising first to fourth mixers, first and second signal amplifying circuits, a signal strength detector, a controller and an attenuator. A signal strength value for the output from the first signal amplifying circuit is detected using the signal strength detector. If the signal strength value is less than a first threshold, a high-gain path is initiated, so that noises respectively input to the first and second mixers together with local oscillator signals are eliminated by the fourth and third mixers respectively, thereby ensuring a high signal-to-noise ratio. If the signal strength value is greater than a second threshold, a low-gain path is initiated, which partially reuses the circuit of the high-gain path, thereby effectively reducing the overall circuit area and decreasing chip cost and power consumption.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: February 15, 2022
    Inventor: Chun Geik Tan
  • Patent number: 11251822
    Abstract: An example method of operating a radio system includes receiving, over a receiver-path, an RF input signal from an antenna, and converting the RF input signal to fall within a pre-defined frequency range using a local oscillation signal. The method further includes processing the converted input signal with a standard filter. In some examples, the method further includes generating the local oscillation signal in a transmitter path of the radio system.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: February 15, 2022
    Assignee: XILINX, INC.
    Inventors: Albrecht Gundel, Heiko Kaluzni, Jan Kuhne, Noemi Arnez Garcia
  • Patent number: 11251818
    Abstract: An architecture of radio frequency front-end includes a power amplifier module (PAM), a front-end module integrated duplexer (FEMiD), an antenna and at least one tunable matching network. The PAM includes a power amplifier, and the at least one tunable matching network is located between the power amplifier and the antenna and is configured to adjust at least one of the impedance of the output end of the power amplifier or the impedance of the input end of the antenna.
    Type: Grant
    Filed: December 25, 2020
    Date of Patent: February 15, 2022
    Assignee: SMARTER MICROELECTRONICS (GUANG ZHOU) CO., LTD.
    Inventors: Yangyang Peng, Zeyan Chen
  • Patent number: 11245431
    Abstract: Reducing an uplink accumulated noise floor in a distributed communications system (DCS) is disclosed. The DCS includes a number of remote units that communicate a number of uplink digital communications signals to a base station concurrently. In DCSs disclosed in certain aspects herein, a signal source, such as a digital baseband unit (BBU) for example, includes multiple receiver circuits each configured to receive and decode a respective one of the uplink digital communications signals. By individually receiving and decoding the uplink digital communications signals before combining the uplink digital communications signals, each of the receiver circuits can operate with a lowered noise floor. As a result, it is possible to improve received sensitivity of the receiver circuits, thus helping to improve coverage range, spectrum efficiency, and data throughput of the DCS.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: February 8, 2022
    Assignee: Corning Research & Development Corporation
    Inventor: Moshe Daniel
  • Patent number: 11228327
    Abstract: A radio frequency module includes a first transmission power amplifier configured to amplify a radio frequency signal of a first communication band, a second transmission power amplifier configured to amplify a radio frequency signal of a second communication band, and a module board which includes a first principal surface and a second principal surface on opposite sides of the module board, and on which the first transmission power amplifier and the second transmission power amplifier are mounted. The first transmission power amplifier is disposed on the first principal surface, and the second transmission power amplifier is disposed on the second principal surface.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: January 18, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Takanori Uejima