Patents by Inventor Liang Han

Liang Han has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20180018299
    Abstract: Techniques are described to perform a shuffle operation. Rather than using an all-lane to all-lane cross bar, a shuffler circuit having a smaller cross bar is described. The shuffler circuit performs the shuffle operation piecewise by reordering data received from processing lanes and outputting the reordered data.
    Type: Application
    Filed: July 13, 2016
    Publication date: January 18, 2018
    Inventors: Liang Han, Xiangdong Jin, Lin Chen, Yun Du, Alexei Vladimirovich Bourd
  • Publication number: 20170357295
    Abstract: A shaft structure includes a rotation shaft, a transmission structure coupled to the rotation shaft, and a moving structure coupled to the transmission structure. The rotation shaft includes a first transmission member fixedly arranged on the rotation shaft. The transmission structure rotates along with the rotation shaft, and includes a second transmission member engaged with the first transmission member. The moving structure moves translationally with respect to the rotation shaft in response to a rotation of the transmission structure.
    Type: Application
    Filed: June 8, 2017
    Publication date: December 14, 2017
    Inventors: Tianshui TAN, Liang HAN, Ran ZHANG
  • Patent number: 9843091
    Abstract: An electronic device may have wireless circuitry with antennas. An antenna resonating element arm for an antenna may be formed from peripheral conductive structures running along the edges of a device housing that are separated from a round by an elongated opening. The electronic device may have a central longitudinal axis that divides the antenna resonating element arm and other antenna structures into symmetrical halves that exhibit mirror symmetry with respect to the central longitudinal axis. The antenna structures may include symmetrical slot antenna resonating elements on opposing sides of the central longitudinal axis. Electrical components such as switches and antenna tuning inductors may be coupled to the antenna structures in a configuration that is symmetrical with respect to the central longitudinal axis. The electrical components may be used to place the antenna structures in an unflipped configuration or in a symmetrical flipped configuration.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: December 12, 2017
    Assignee: Apple Inc.
    Inventors: Matthew A. Mow, Xu Han, James G. Judkins, Liang Han, Mattia Pascolini, Ming-Ju Tsai, Nanbo Jin, Thomas E. Biedka, Victor C. Lee, Yuehui Ouyang
  • Publication number: 20170302326
    Abstract: An electronic device may be provided with wireless circuitry. The wireless circuitry may include one or more antennas. An antenna may have an antenna feed that is coupled to a radio-frequency transceiver with a transmission line. An impedance matching circuit may be coupled to the antenna feed to match the impedance of the transmission line and the antenna. The impedance matching circuit and tunable circuitry in the antenna may be formed using integrated circuits. Each integrated circuit may include switching circuitry that is used in switching components such as inductors and capacitors into use. Sensors such as temperature sensors, current and voltage sensors, power sensors, and impedance sensors may be integrated into the integrated circuits. Each integrated circuit may store settings for the switching circuitry and may include communications and control circuitry for communicating with external circuits and processing sensor data.
    Type: Application
    Filed: June 28, 2017
    Publication date: October 19, 2017
    Inventors: Matthew A. Mow, Liang Han, Ming-Ju Tsai, Thomas E. Biedka, Victor Lee, James G. Judkins, Mattia Pascolini
  • Publication number: 20170295085
    Abstract: A method for testing a composite service is provided. The method may include installing a first debug probe on a first service. The method may include installing a second debug probe on a second service. The method may include executing the composite service, whereby the composite service comprises the first service and the second service. The method may include receiving a first service interaction log and a second service interaction log, whereby the first interaction log records a first plurality of I/O, and whereby the second interaction log records a second plurality of I/O. The method may include generating a global scheduling script based on the first service interaction log and the second interaction log. The method may include sending the first plurality of I/O to the first debug probe and the second plurality of I/O to the second debug probe based on the global scheduling script.
    Type: Application
    Filed: April 12, 2016
    Publication date: October 12, 2017
    Inventors: Hong Liang Han, Xin Peng Liu, Bing Dong Ma, Jeremiah S. Swan
  • Publication number: 20170284942
    Abstract: The present invention relates to a fluorescent polymer cast on the surface of wells of a plate and a plate comprising the fluorescent polymer. The plate is used in a method for calibrating read-out values of plate readers. The method for calibrating the plate readers can effectively reduce the deviation of read-out values among different plate readers.
    Type: Application
    Filed: March 27, 2017
    Publication date: October 5, 2017
    Inventors: Cheng-Tse LIN, Yi-Ming SUN, Kuei-Shen HSU, Liang-Han CHANG, Yao-Kuang CHUNG, Chin-Yun WU, Chin-Shiou HUANG
  • Patent number: 9742459
    Abstract: An electronic device may be provided with wireless circuitry. Control circuitry may be used to adjust the wireless circuitry. The wireless circuitry may include an antenna that is tuned using tunable components. The control circuitry may gather information on the current operating mode of the electronic device, sensor data from a proximity sensor, accelerometer, microphone, and other sensors, antenna impedance information for the antenna, and information on the use of connectors in the electronic device. Based on this gathered data, the control circuitry can adjust the tunable components to compensate for antenna detuning due to loading from nearby external objects, may adjust transmit power levels, and may make other wireless circuit adjustments.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: August 22, 2017
    Assignee: Apple Inc.
    Inventors: Enrique Ayala Vazquez, Hongfei Hu, Mattia Pascolini, Yuehui Ouyang, Salih Yarga, Yijun Zhou, Erdinc Irci, Jayesh Nath, Ming-Ju Tsai, Matthew A. Mow, Liang Han, James G. Judkins, Robert W. Schlub
  • Patent number: 9698854
    Abstract: An electronic device may be provided with wireless circuitry. The wireless circuitry may include one or more antennas. An antenna may have an antenna feed that is coupled to a radio-frequency transceiver with a transmission line. An impedance matching circuit may be coupled to the antenna feed to match the impedance of the transmission line and the antenna. The impedance matching circuit and tunable circuitry in the antenna may be formed using integrated circuits. Each integrated circuit may include switching circuitry that is used in switching components such as inductors and capacitors into use. Sensors such as temperature sensors, current and voltage sensors, power sensors, and impedance sensors may be integrated into the integrated circuits. Each integrated circuit may store settings for the switching circuitry and may include communications and control circuitry for communicating with external circuits and processing sensor data.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: July 4, 2017
    Assignee: Apple Inc.
    Inventors: Matthew A. Mow, Liang Han, Ming-Ju Tsai, Thomas E. Biedka, Victor Lee, James G. Judkins, Mattia Pascolini
  • Publication number: 20170187412
    Abstract: An electronic device may be provided with wireless circuitry. The wireless circuitry may include one or more antennas. The electronic device may have a housing in which control circuitry and radio-frequency transceiver circuitry is mounted. The transceiver circuitry may be used to transmit and receive radio-frequency signals using the antennas. The electronic device may have radio-frequency sensors. The radio-frequency sensors may include current sensors, voltage sensors, power sensors, sensors with taps and switching circuitry that tap signals flowing in a signal path and that may make measurements such as impedance measurements, and radio-frequency sensors with sensor antennas and associated sensor circuits that measure radio-frequency signals received using the sensor antennas. The control circuitry may make wireless circuit adjustments based on measured radio-frequency signals.
    Type: Application
    Filed: December 28, 2015
    Publication date: June 29, 2017
    Inventors: Liang Han, Matthew A. Mow
  • Publication number: 20170147535
    Abstract: A method for identifying a font displayed within an electronic document. In one embodiment, the method includes a computer processor identifying a string of two or more characters that correspond to a custom ligature within an electronic document, wherein the custom ligature is associated with at least one character of the electronic document. The method further includes accessing a font library associated with the electronic document. The method further includes identifying a font file within the font library that corresponds to the at least one character of the electronic document that is associated with the custom ligature. The method further includes identifying a glyph within the identified font file that corresponds to the custom ligature. The method further includes substituting the identified glyph into the electronic document to replace at least the custom ligature. The method further includes displaying the substituted glyph within the electronic document.
    Type: Application
    Filed: November 24, 2015
    Publication date: May 25, 2017
    Inventors: Ying Cao, Zhi Chen, Sheng Liang Han, Yin Xia
  • Publication number: 20170146545
    Abstract: Provided herein are methods, systems, devices, and computer-readable storage media for selecting a detection area for a well (e.g., as part of an assay plate) comprising a plurality of encoded microcarriers. In some aspects, selecting the detection area includes obtaining one or more images of the well; calculating a center of the well according to a two-dimensional coordinate system; assigning a position, according to the two-dimensional coordinate system, of a first encoded microcarrier from the plurality; determining whether a distance between the position of the first encoded microcarrier and the center of the well according to the two-dimensional coordinate system exceeds a threshold distance; and including in the detection area one or more microcarriers whose distance from the center of the well does not exceed the threshold distance, while excluding those whose distance from the center of the well exceeds the threshold.
    Type: Application
    Filed: November 21, 2016
    Publication date: May 25, 2017
    Inventors: Yao-Kuang CHUNG, Chia-En TAI, Liang Han CHANG
  • Patent number: 9647332
    Abstract: An electronic device may be provided with an antenna. The antenna may have an antenna resonating element and an antenna ground. The antenna resonating element may be formed from peripheral conductive housing structures. An audio jack or other connector may be mounted in an opening in the peripheral conductive housing structures. The audio jack may overlap the antenna ground. Contacts in the audio jack may be coupled to an interference mitigation circuit. The interference mitigation circuit may include capacitors coupled to the ground and inductors coupled between the contacts and the capacitors. Radio-frequency signal blocking inductors may be coupled between the interference mitigation circuit and respective ports in an audio circuit.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: May 9, 2017
    Assignee: Apple Inc.
    Inventors: Liang Han, Ming-Ju Tsai, Matthew A. Mow, Yijun Zhou, Mattia Pascolini, Salih Yarga, Enrique Ayala Vazquez, Hongfei Hu, Xu Han, Robert W. Schlub
  • Publication number: 20170126575
    Abstract: Reducing buffer usage for a TCP proxy session between a client and a server by a service gateway includes: determining a first round trip time (RTT) for a server side TCP session and determining a second RTT for a client side TCP session; comparing the first RTT with the second RTT; determining whether the second RTT exceeds the first RTT beyond a threshold; if so, then calculating a desired RTT based on the second RTT; and setting a timer according to the calculated desired RTT, where a TCP acknowledgement for the server side TCP session is delayed until the timer expires. The desired RTT may be calculated as a percentage of the second RTT or as the second RTT minus a predetermined value. The service gateway waits until the timer has expired before sending a TCP acknowledgement data packet to the server.
    Type: Application
    Filed: December 9, 2016
    Publication date: May 4, 2017
    Inventors: Liang Han, Zhiruo Cao
  • Publication number: 20170117754
    Abstract: An electronic device may be provided with wireless circuitry. The wireless circuitry may include one or more dual-frequency dual-polarization patch antennas. Each patch antenna may have a patch antenna resonating element that lies in a plane and a ground that lies in a different parallel plane. The patch antenna resonating element may have a first feed located along a first central axis and a second feed located along a second central axis that is perpendicular to the first central axis. The patch antenna resonating element may be rectangular, may be oval, or may have other shapes. A shorting pin may be located at an intersecting point between the first and second axes. The patch antennas may be used in beam steering arrays. The patch antennas may be used for wireless power transfer at microwave frequencies or other frequencies and may be used to support millimeter wave communications.
    Type: Application
    Filed: October 23, 2015
    Publication date: April 27, 2017
    Inventors: Basim H. Noori, Khan M. Salam, Liang Han, Matthew A. Mow, Mattia Pascolini, Ruben Caballero, Thomas E. Biedka, Yi Jiang, Yuehui Ouyang
  • Patent number: 9617402
    Abstract: The present invention relates to a new process for preparing polyisocyanates containing isocyanurate groups and being flocculation-stable in solvents from (cyclo)aliphatic diisocyanates.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: April 11, 2017
    Assignee: BASF SE
    Inventors: Harald Schaefer, Shintaro Gomyo, Jing He, Horst Binder, Liang Han, Woosuk Lee
  • Patent number: 9602442
    Abstract: Allocation of buffers for a TCP proxy session between a client and a server by a service gateway includes monitoring dynamic network behaviors for server and client side sessions of the TCP proxy session; and allocating capacity for a server side buffer and capacity for a client side buffer in a memory buffer based on the dynamic server side network behaviors, the dynamic client side network behaviors, and a weighted average of a capacity of the memory buffer. In one approach to the allocation, the gateway determines whether an available capacity of the server or client side buffer is sufficient to store a data packet. If not sufficient, the allocated capacity of the server or client side buffer is increased based on measurements of the dynamic network behaviors and the weighted average, and the available capacity of the server or client side buffer is adjusted accordingly.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: March 21, 2017
    Assignee: A10 Networks, Inc.
    Inventor: Liang Han
  • Patent number: 9594147
    Abstract: An electronic device may have control circuitry that uses a reflectometer to measure antenna impedance during operation. The reflectometer may have a directional coupler that is coupled between radio-frequency transceiver circuitry and an antenna. A calibration circuit may be coupled between the directional coupler and the antenna. The calibration circuit may have a first port coupled to the antenna, a second port coupled to the directional coupler, and a third port that is coupled to a calibration resistance. The reflectometer may have terminations of identical impedance that are coupled to ground. Switching circuitry in the reflectometer may be used to route signals from the directional coupler to a feedback receiver for measurement by the control circuitry or to ground through the terminations. Calibrated antenna reflection coefficient measurements may be used in dynamically adjusting the antenna.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: March 14, 2017
    Assignee: Apple Inc.
    Inventors: Liang Han, Matthew A. Mow, Thomas E. Biedka, Mattia Pascolini, Ming-Ju Tsai, James G. Judkins, Victor Lee, Robert W. Schlub
  • Publication number: 20170040668
    Abstract: An electronic device may have wireless circuitry with antennas. An antenna resonating element arm for a given antenna may be formed from metal structures supported by a plastic carrier. The antenna resonating element arm may be coupled to switching circuitry to isolate the antenna resonating element arm when the antenna resonating element arm is not being used to handle communications in a communications band. The electronic device may have a metal housing. A slot may separate a peripheral portion of the housing such as a sidewall portion from a planar rear portion. The sidewall portion and the planar rear portion may form an additional antenna that operates at communications frequencies outside of the communications band handled by the given antenna. A parasitic antenna resonating element arm may be formed in the slot to enhance the frequency response of the additional antenna.
    Type: Application
    Filed: August 5, 2015
    Publication date: February 9, 2017
    Inventors: Enrique Ayala Vazquez, Hongfei Hu, Nanbo Jin, Matthew A. Mow, Liang Han, Mattia Pascolini
  • Publication number: 20170033460
    Abstract: An electronic device may have wireless circuitry with antennas. An antenna resonating element arm for an antenna may be formed from conductive housing structures running along the edges of a device. The antenna may have a pair of switchable return paths that bridge a slot between the antenna resonating element and an antenna ground. An adjustable component and a feed may be coupled in parallel across the slot. The adjustable component may switch a capacitor into use or out of use and the return paths may be selectively opened and closed to compensate for antenna loading due to the presence of external objects near the electronic device.
    Type: Application
    Filed: July 28, 2015
    Publication date: February 2, 2017
    Inventors: Enrique Ayala Vazquez, Hongfei Hu, Nanbo Jin, Matthew A. Mow, Liang Han, Ming-Ju Tsai, Erica J. Tong, Erdinc Irci, Salih Yarga, Mattia Pascolini, Benjamin Shane Bustle, Ruben Caballero
  • Patent number: 9531846
    Abstract: Reducing buffer usage for a TCP proxy session between a client and a server by a service gateway includes: determining a first round trip time (RTT) for a server side TCP session and determining a second RTT for a client side TCP session; comparing the first RTT with the second RTT; determining whether the second RTT exceeds the first RTT beyond a threshold; if so, then calculating a desired RTT based on the second RTT; and setting a timer according to the calculated desired RTT, where a TCP acknowledgement for the server side TCP session is delayed until the timer expires. The desired RTT may be calculated as a percentage of the second RTT or as the second RTT minus a predetermined value. The service gateway waits until the timer has expired before sending a TCP acknowledgement data packet to the server.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: December 27, 2016
    Assignee: A10 Networks, Inc.
    Inventors: Liang Han, Zhiruo Cao