Patents by Inventor Chung Yeh

Chung Yeh 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: 20170199729
    Abstract: The present disclosure relates to an electronic application developing method. The method comprises providing a development platform with a plurality of cross-industry application templates. Users can design applications and plan business processes via the development platform efficiently without building any infrastructure or writing any programming code.
    Type: Application
    Filed: January 4, 2017
    Publication date: July 13, 2017
    Inventor: Chen-Chung YEH
  • Publication number: 20170146612
    Abstract: The present invention provides a detection circuit, which comprises a first detection path and a second detection path for detecting the state of a power source under test. A first current is generated on the first detection path according to power source under test; a second current is generated on the second detection path according to the power source under test. The detection circuit generates a detection signal according to the first current and the second current. The detection signal represents the state of the power source under test.
    Type: Application
    Filed: December 31, 2015
    Publication date: May 25, 2017
    Inventors: JUN-YUAN CHEN, CHIH-TE HUNG, CHENG-CHUNG YEH
  • Patent number: 9608531
    Abstract: A timing controller provides adaptive timings to control a synchronous rectifier with a body diode. The timing controller has a ramp generator providing a ramp signal at a first capacitor. The ramp signal corresponds to a discharge time when the body diode is forward biased. A second capacitor records an estimated duration signal. An update circuit is connected between the first and second capacitors, for shorting the first and second capacitor to update the estimated duration signal by charge sharing. A comparator with two inputs coupled to the ramp signal and the estimated duration signal respectively compares the ramp signal and the estimated duration signal to control the synchronous rectifier.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: March 28, 2017
    Assignee: LEADTREND TECHNOLOGY CORPORATION
    Inventors: Chung-Wei Lin, Yang-Sheng Lin, Wen-Chung Yeh
  • Publication number: 20170052349
    Abstract: A wide-angle lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, all of which are arranged in sequence from an object side to an image side along an optical axis. The first lens is a meniscus lens with negative refractive power and includes a convex surface facing the object side. The second lens is a biconcave lens with negative refractive power. The third lens is with positive refractive power. The fourth lens is with positive refractive power. The fifth lens is a meniscus lens with negative refractive power and includes a convex surface facing the image side. The sixth lens is with positive refractive power. The wide-angle lens assembly satisfies 1.8 ? L ? ? 1 ? R ? ? 1 ? s f ? 4.0 wherein L1R1s is a radius of an object side surface of the first lens and f is an effective focal length of the wide-angle lens assembly.
    Type: Application
    Filed: August 19, 2016
    Publication date: February 23, 2017
    Inventor: CHING-CHUNG YEH
  • Patent number: 9534273
    Abstract: The present invention is directed to a precious metal recovery process in which an acid sulfidic feed material is subjected to acid pressure oxidation and an alkaline sulfidic feed material is subjected to alkaline pressure oxidation, with the discharge slurries from the pressure oxidation processes being combined to reduce neutralization requirements prior to precious metal recovery.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: January 3, 2017
    Inventors: John William Langhans, Jr., Wilson Chung-Yeh Tsu
  • Patent number: 9424055
    Abstract: A method, system and program product for executing a multi-function instruction in an emulated computer system by specifying, via the multi-function instruction, either a capability query or execution of a selected function of one or more optional functions, wherein the selected function is an installed optional function, wherein the capability query determines which optional functions of the one or more optional functions are installed on the computer system.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: August 23, 2016
    Assignee: International Business Machines Corporation
    Inventors: Shawn D. Lundvall, Ronald M. Smith, Sr., Phil Chi-Chung Yeh
  • Patent number: 9209682
    Abstract: Disclosed include switching-mode power supplies and control methods thereof. A disclosed switching-mode power supply is coupled to an input power node and a ground node, comprising a controller, a first inductor, and a bootstrap circuit. The controller is for controlling a power switch coupled to the input power node and a connection node. The controller is powered by the connection node and an operation power node. The first inductor is coupled between the connection node and a discharge node. The bootstrap circuit is coupled between the discharge node, the operation power node and the connection node, to make an operation voltage at the operation power node substantially not less than a discharge voltage at the discharge node. The discharge node is coupled to power an output load.
    Type: Grant
    Filed: September 24, 2011
    Date of Patent: December 8, 2015
    Assignee: SHAMROCK MICRO DEVICES CORP.
    Inventors: Chien-Liang Lin, Wen-Chung Yeh
  • Patent number: 9190912
    Abstract: In a switching mode power supply, a power controlling circuit includes a phase generator and a phase controller. The phase generator provides a clock signal. The phase controller detects phases of a phase reference signal and a burst initialization signal so as to generate a burst signal, and causes a phase of the burst signal to not be earlier than the phase of the group reference signal. The burst signal is utilized for switching the power supply between a non-switching state and a switching state. The group reference signal is generated according to the clock signal and has a lower frequency than the clock signal. The burst initialization signal is controlled by an output voltage source of the power supply.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: November 17, 2015
    Assignee: Leadtrend Technology Corp.
    Inventor: Wen-Chung Yeh
  • Patent number: 9184868
    Abstract: The present invention relates to a transmission interface device capable of calibrating the transmission frequency automatically, which comprises a clock generating unit, a data transmission unit, and a control unit. The clock generating unit is used for generating an operating clock, which determines a transmission frequency. The data transmission unit is used for connecting to a host and transmitting a plurality of data to the host or receiving the plurality of data from the host according to the operating clock. When the host or the data transmission unit detects transmission errors in the plurality of data, the host or the data transmission unit generates an error handling. The control unit generates an adjusting signal according to the error handling and transmits the adjusting signal to the clock generating unit for adjusting the transmission frequency of the operating clock.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: November 10, 2015
    Assignee: Q-Silicon Technologies Corp.
    Inventors: Sheng-Hsun Lin, Cheng-Chung Yeh, Chun-Chi Yeh, Chih-Te Hung, Wei-Chia Su
  • Publication number: 20150214850
    Abstract: A timing controller provides adaptive timings to control a synchronous rectifier with a body diode. The timing controller has a ramp generator providing a ramp signal at a first capacitor. The ramp signal corresponds to a discharge time when the body diode is forward biased. A second capacitor records an estimated duration signal. An update circuit is connected between the first and second capacitors, for shorting the first and second capacitor to update the estimated duration signal by charge sharing. A comparator with two inputs coupled to the ramp signal and the estimated duration signal respectively compares the ramp signal and the estimated duration signal to control the synchronous rectifier.
    Type: Application
    Filed: January 26, 2015
    Publication date: July 30, 2015
    Inventors: Chung-Wei Lin, Yang-Sheng Lin, Wen-Chung Yeh
  • Patent number: 9037773
    Abstract: An electronic apparatus is disclosed. The electronic apparatus comprises a random access memory (RAM), a read-only memory (ROM) and a processing unit. The RAM stores a call transfer table, wherein the call transfer table comprising at least one transferred address in the RAM. The ROM stores at least one code to call one address of the call transfer table. The processing unit executes the code in the ROM and reads the transfer table accordingly, then transfers to run the data in the transferred address of the RAM.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: May 19, 2015
    Assignee: MEDIATEK INC.
    Inventors: Hsin-Chung Yeh, Cheng Huang Wu
  • Patent number: 8994708
    Abstract: A driver circuit for dot inversion of liquid crystals includes a positive source supplying a first positive signal and a second positive signal; a negative source supplying a first negative signal and a second negative signal; a first selector unit connected with the sources to receive the first positive signal and the first negative signal; a second selector unit connected with the sources to receive the second positive signal and the second negative signal; a first source connected with the selection unit to alternatively output a first positive voltage and a first negative voltage; a second source connected with the selection unit to alternatively output a second positive voltage and a second negative voltage. When the first source outputs the first positive voltage, the second source outputs the second negative voltage. When the first source outputs the first negative voltage, the second source outputs the second positive voltage.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: March 31, 2015
    Assignee: Sitronix Technology Corp.
    Inventors: Tsun-Sen Lin, Cheng-Chung Yeh
  • Patent number: 8879282
    Abstract: An embodiment provides a control method capable of controlling a switching-mode power supply to provide an output power source. The switching-mode power supply has a winding coupled to an input power source and controlled by a switch to be energized or de-energized. The maximum current peak through the winding is set to be a predetermined value. A discharge time of the winding in a switching cycle period is detected. The switching cycle period of the switch is controlled to keep the ratio of the discharge time to the switching cycle period as a constant.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: November 4, 2014
    Assignee: Leadtrend Technology Corp.
    Inventor: Wen-Chung Yeh
  • Patent number: 8853738
    Abstract: A power LDMOS device including a substrate, source and drain regions, gates and trench insulating structures is provided. The substrate has a finger tip area, a finger body area and a palm area. The source regions are in the substrate in the finger body area and further extend to the finger tip area. The neighboring source regions in the finger tip area are connected. The outmost two source regions further extend to the palm area and are connected. The drain regions are in the substrate in the finger body area and further extend to the palm area. The neighboring drain regions in the palm area are connected. The source and drain regions are disposed alternately. A gate is disposed between the neighboring source and drain regions. The trench insulating structures are in the substrate in the palm area and respectively surround ends of the drain regions.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: October 7, 2014
    Assignee: Episil Technologies Inc.
    Inventors: Chung-Yeh Lee, Pei-Hsun Wu, Shiang-Wen Huang
  • Patent number: 8836576
    Abstract: A method and system for navigation are provided to locate a GNSS device. The GNSS device comprises a RF front end receiving satellite signals of a plurality of satellites, and a GNSS device comprising a plurality of correlation channels each performing a correlation process to generate a correlation result from satellite signals corresponding to a satellite, a memory device for storage of the correlation results, and a processor performing acquisition and tracking based on the correlation results.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: September 16, 2014
    Assignee: Mediatek Inc.
    Inventors: Hsin-Chung Yeh, Chi Ya Lo
  • Patent number: 8810324
    Abstract: The present invention relates to an oscillating device, which comprises a driving module and an oscillating module. The driving module is used for producing a first driving voltage and a second driving voltage. The oscillating module comprises a first symmetric load circuit, a second symmetric load circuit, and a bias circuit. The first symmetric load circuit and the second symmetric load circuit produce a bias according to the first driving voltage. The bias circuit produces a bias current according to the second driving voltage. The oscillating module produces an oscillating signal according to the first driving voltage and the bias current, where the bias current is proportional to the bias. Thereby, by making the driving signal produced by driving module proportional to the bias of the oscillating module, simple compensation for temperature and process can be performed. Thereby, the frequency can be tuned using a few calibration bits.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: August 19, 2014
    Assignee: Sitronix Technology Corp.
    Inventors: Chih-Te Hung, Cheng-Chung Yeh
  • Patent number: 8785969
    Abstract: A reduced surface field (RESURF) structure and a lateral diffused metal oxide semiconductor (LDMOS) device including the same are provided. The RESURF structure includes a substrate of a first conductivity type, a deep well region of a second conductivity type, an isolation structure, at least one trench insulating structure, and at least one doped region of the first conductivity type. The deep well region is disposed in the substrate. The isolation structure is disposed on the substrate. The trench insulating structure is disposed in the deep well region below the isolation structure. The doped region is disposed in the deep well region and surrounds a sidewall and a bottom of the trench insulating structure.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: July 22, 2014
    Assignee: Episil Technologies Inc.
    Inventors: Chung-Yeh Lee, Pei-Hsun Wu, Shiang-Wen Huang
  • Patent number: 8749539
    Abstract: A driver circuit for dot inversion of liquid crystals includes a positive source supplying a first positive signal and a second positive signal; a negative source supplying a first negative signal and a second negative signal; a first selector unit connected with the sources to receive the first positive signal and the first negative signal; a second selector unit connected with the sources to receive the second positive signal and the second negative signal; a first source connected with the selection unit to alternatively output a first positive voltage and a first negative voltage; a second source connected with the selection unit to alternatively output a second positive voltage and a second negative voltage. When the first source outputs the first positive voltage, the second source outputs the second negative voltage. When the first source outputs the first negative voltage, the second source outputs the second positive voltage.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: June 10, 2014
    Assignee: Sitronix Technology Corp.
    Inventors: Der-Ju Hung, Chun-Sheng Lin, Cheng-Chung Yeh
  • Patent number: 8717310
    Abstract: A stylus comprises a first shell, a second shell, a first slide enabling member. The first shell has a first hole defined therethough. The second shell is slidably accommodated in the first hole of the first shell. The first slide enabling member couples the second shell to the first shell such that the second shell slides relative to the first shell from a retracted configuration to an extending configuration. The first slide enabling member includes a first pin and a first track that engages the first pin, the second shell slides relative to the first shell along the first pin.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: May 6, 2014
    Assignees: Shenzhen Futaihong Precision Industry Co., Ltd., FIH (Hong Kong) Limited
    Inventors: Shi-Xu Liang, Jun-Lin Chen, Chung-Yeh Sa
  • Patent number: 8717110
    Abstract: A frequency-jittering apparatuses includes an oscillator and a frequency control circuit. The oscillator generates a signal. When the magnitude of the signal exceeds a magnitude of a reference signal, the oscillator operates substantially in a first state; and when the magnitude of the signal is lower than the magnitude of the reference signal, the oscillator operates substantially in a second state different from the first one. The frequency control circuit varies the reference signal to change the frequency of the signal output from the oscillator.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: May 6, 2014
    Assignee: Leadtrend Technology Corp.
    Inventors: Wen-Chung Yeh, Yi-Lun Shen