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: 20100245315
    Abstract: The present invention relates to a driving circuit for a display panel, and comprises a switching module, a buffer circuit, and a plurality of resistive devices. The switching module is coupled to a first power supply and a second power supply. The voltage of the first power supply is smaller than that of the second power supply. The buffer circuit is coupled to the switching module, and is used for buffering a data signal and producing a buffer signal. The plurality of resistive devices is connected in series and coupled to the buffer circuit, and produces a plurality of driving signals between the plurality of resistive devices according to the buffer signal. The driving circuit switches between the first power supply and second power supply sequentially to supply power to the buffer circuit. Thereby, one of the plurality of driving signals charges a capacitor of the display panel for saving power of the driving circuit. Accordingly, the power of the display can be saved.
    Type: Application
    Filed: March 30, 2009
    Publication date: September 30, 2010
    Inventors: Der-Ju Hung, Cheng-Chung Yeh
  • Publication number: 20100245314
    Abstract: The present invention relates to a driving circuit for a display panel, which comprises a pre-charge power supply, a pre-charge switch, a buffer circuit, and a plurality of resistive devices. The pre-charge switch is coupled between the pre-charge power supply and a capacitor of the display panel. The buffer circuit is used for buffering a data signal and producing a buffer signal. The plurality of resistive devices is connected in series and coupled to the buffer circuit, and produces a plurality of driving signals therebetween according to the buffer signal. The driving circuit first closes the pre-charge switch to make the pre-charge power supply charge the capacitor. Then, one of the plurality of driving signals charges the capacitor. Thereby, the driving time can be shortened, and power of the display can be saved by avoiding power consumption on resistors.
    Type: Application
    Filed: March 30, 2009
    Publication date: September 30, 2010
    Inventors: Der-Ju Hung, Cheng-Chung Yeh
  • Publication number: 20100237960
    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: Application
    Filed: October 23, 2009
    Publication date: September 23, 2010
    Inventors: Wen-Chung Yeh, Yi-Lun Shen
  • Publication number: 20100214172
    Abstract: A method for determining a Doppler shift of a first signal is provided. First, a plurality of Doppler frequency hypotheses is combined to obtain a joint Doppler signal. The first signal is the correlated according to the joint Doppler signal and a plurality of code signals with phases corresponding to a series of code phase hypotheses to obtain a series of correlation results which are then examined to determine whether the Doppler shift does lie in the Doppler hypotheses. A fine Doppler search is then performed to determine the Doppler shift when the Doppler shift lies in the Doppler hypotheses.
    Type: Application
    Filed: February 25, 2009
    Publication date: August 26, 2010
    Applicant: MEDIATEK INC.
    Inventors: Hsin-Chung Yeh, Kuan-I Li
  • Publication number: 20100207115
    Abstract: An organic electro-luminescence diode comprises two electrodes and an organic electro-luminescence structure. The organic electro-luminescence structure is formed between the two electrodes, and includes a red light-generating unit, a green light-generating unit, a blue light-generating unit and a light-compensating unit stacked with each other. The light-compensating unit is selected from the group consisting of a white light-compensating unit, a red light-compensating unit, a green light-compensating unit, a blue light-compensating unit and a structure stacking together one light-compensating unit upon the other.
    Type: Application
    Filed: April 29, 2010
    Publication date: August 19, 2010
    Inventor: Chung-Yeh Iou
  • Publication number: 20100207813
    Abstract: A frequency variation determining method determines a frequency variation of a target signal of a chip. The method comprises: (a) determining an operation state according to a plurality of chip state parameters; and (b) determining the frequency variation of the target signal according to the operation state.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 19, 2010
    Inventors: Chi-Ya Lo, Hsin-Chung Yeh
  • Patent number: 7770024
    Abstract: A method, system and computer program product for computing a message authentication code for data in storage of a computing environment. An instruction specifies a unit of storage for which an authentication code is to be computed. An computing operation computes an authentication code for the unit of storage. A register is used for providing a cryptographic key for use in the computing to the authentication code. Further, the register may be used in a chaining operation.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: August 3, 2010
    Assignee: International Business Machines Corporation
    Inventors: Shawn D. Lundvall, Ronald M. Smith, Sr., Phil Chi-Chung Yeh
  • Publication number: 20100178930
    Abstract: A positioning method is provided, particularly adaptable for a mobile device. Satellite signals are first received from at least one satellites. At least one first search process is performed on the satellite signals by using an adjustable integration time. A tracking process is then performed when the at least one satellite is acquired in the at least one search process.
    Type: Application
    Filed: January 13, 2009
    Publication date: July 15, 2010
    Applicant: MEDIATEK INC.
    Inventors: Hsin-Chung Yeh, Yuan Wen Ting
  • Publication number: 20100153619
    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 code transfer table comprising at least one transferred address in the RAM. The ROM stores at least one code to call one address of the code 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: Application
    Filed: December 16, 2008
    Publication date: June 17, 2010
    Applicant: MEDIATEK INC.
    Inventors: Hsin-Chung Yeh, Cheng Huang Wu
  • Patent number: 7733014
    Abstract: An organic electro-luminescence diode comprises two electrodes and an organic electro-luminescence structure. The organic electro-luminescence structure is formed between the two electrodes, and includes a red light-generating unit, a green light-generating unit, a blue light-generating unit and a light-compensating unit stacked with each other. The light-compensating unit is selected from the group consisting of a white light-compensating unit, a red light-compensating unit, a green light-compensating unit, a blue light-compensating unit and a structure stacking together one light-compensating unit upon the other.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: June 8, 2010
    Assignee: Au Optronics Corp.
    Inventor: Chung-Yeh Iou
  • Patent number: 7725736
    Abstract: A method, system and computer program product for digesting data in storage of a computing environment. The digesting computes a condensed representation of a message or data stored in the computer storage. A COMPUTE INTERMEDIATE MESSAGE DIGEST (KIMD) and a COMPUTE LAST MESSAGE DIGEST (KLMD) instruction are disclosed which specify a unit of storage to be digested by a secure hashing algorithm.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: May 25, 2010
    Assignee: International Business Machines Corporation
    Inventors: Shawn D. Lundvall, Ronald M. Smith, Sr., Phil Chi-Chung Yeh
  • Publication number: 20100124080
    Abstract: Current control method and apparatus are disclosed. A current limiter is coupled to a switch connected in series with an energy transfer element of a power supply. The current limiter detects a current flowing through the switch and, when the current exceeds a current limit signal, turns off the switch. A limit signal generator provides the current limit signal, detects the maximum current value of the current, and updates the current limit signal according to the maximum current value and an ideal current limit value.
    Type: Application
    Filed: November 20, 2008
    Publication date: May 20, 2010
    Inventors: Wen-Chung Yeh, Ren-Yi Chen
  • Patent number: 7720220
    Abstract: A method, system and program product for executing a cipher message assist instruction in a computer system by specifying, via the cipher message assist instruction, either a capability query installed function 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: February 27, 2009
    Date of Patent: May 18, 2010
    Assignee: International Business Machines Corporation
    Inventors: Shawn D. Lundvall, Ronald M. Smith, Sr., Phil Chi-Chung Yeh
  • Publication number: 20100103038
    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: Application
    Filed: October 27, 2008
    Publication date: April 29, 2010
    Applicant: MEDIATEK INC.
    Inventors: Hsin-Chung Yeh, Chi Ya Lo
  • Publication number: 20100073913
    Abstract: A light guide plate, a backlight module and a liquid crystal display are provided. The light guide plate has a first surface at least having one first structure and one second structure formed thereon. The first structure and the second structure are adjacent arranged and are mirror reflection with each other. Each of the first structure and the second structure has a first protrusion having a cross section of eccentric triangle.
    Type: Application
    Filed: December 31, 2008
    Publication date: March 25, 2010
    Applicant: AU OPTRONICS CORP.
    Inventor: Yao-Chung Yeh
  • Publication number: 20100039277
    Abstract: In a closed-loop monitoring system, a host device is operable to output encoded signals at a coupling side to a single transmission line. Each of monitoring devices includes: a current inducting generating unit generating induced encoded signals when the encoded signals pass through a signal current generating element coupled across an input side coupled to the transmission line; a control unit identifying a monitoring signal from the induced encoded signals generated by the current inducting generating unit; and a detecting unit detecting, in response to the monitoring signal, whether each of electronic devices coupled thereto is activated ox deactivated and transmitting a reply signal associated with states of the electronic devices to the transmission line based on a detection result made thereby. The host device receives the reply signal from each monitoring device through the transmission line and the coupling side to obtain state information associated with the electronic devices.
    Type: Application
    Filed: August 6, 2009
    Publication date: February 18, 2010
    Applicant: HICO Technology Co., LTD.
    Inventors: Yi-Lin Tang, Nan-Jan Huang, Ruei-Cheng Liu, Wang-Cheng Chen, Cheng-Chung Yeh
  • Patent number: 7664477
    Abstract: A communications system includes a first oscillator for producing a first clock signal; a second oscillator for producing a second clock signal; and a secondary circuit coupled to the first oscillator and the second oscillator for determining a second oscillation frequency corresponding to a frequency of the second clock signal; the second oscillation signal being determined according to the first clock signal, the second clock signal, and a first oscillation frequency corresponding to a frequency of the first clock signal.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: February 16, 2010
    Assignee: Mediatek Inc.
    Inventor: Hsin-Chung Yeh
  • Publication number: 20100006935
    Abstract: A semiconductor structure includes a semiconductor substrate of a first conductivity type; a pre-high-voltage well (pre-HVW) in the semiconductor substrate, wherein the pre-HVW is of a second conductivity type opposite the first conductivity type; a high-voltage well (HVW) over the pre-HVW, wherein the HVW is of the second conductivity type; a field ring of the first conductivity type occupying a top portion of the HVW, wherein at least one of the pre-HVW, the HVW, and the field ring comprises at least two tunnels; an insulation region over the field ring and a portion of the HVW; a drain region in the HVW and adjacent the insulation region; a gate electrode over a portion the insulation region; and a source region on an opposite side of the gate electrode than the drain region.
    Type: Application
    Filed: July 9, 2008
    Publication date: January 14, 2010
    Inventors: Eric Huang, Tsung-Yi Huang, Fu-Hsin Chen, Chyi-Chyuan Huang, Chung-Yeh Wu
  • Publication number: 20100007390
    Abstract: A clock signal generating circuit includes a main delay circuit and a variable delay circuit. The main delay circuit receives a feedback clock signal, and outputs an output clock signal after a first delay when receiving the feedback clock signal. The variable delay circuit receives the output clock signal, and updates the feedback clock signal after a second delay when receiving the output clock signal. The second delay is periodically varied and is shorter than the first delay.
    Type: Application
    Filed: March 17, 2009
    Publication date: January 14, 2010
    Inventor: Wen-Chung Yeh
  • Patent number: 7626446
    Abstract: The present invention relates to a charge pump capable of enhancing power efficiency and output voltage, which comprises a pump capacitor, a switching module, a first switch, a first buffer, a first switch, and an output capacitor. The switching module is coupled to a first terminal of the pump capacitor. The first switch is coupled between a second terminal of the pump capacitor and a supply voltage. The first buffer receives a first input signal and produces a control signal for controlling the first switch to turn on or cut off. The level of the first input signal ranges between a first voltage and a second voltage, wherein the first and the second voltages are related to the gate voltage of the first switch. The gate voltage of the first switch is a multiple, which is greater than one, of the supply voltage. Thereby, the impedance of the switch is reduced, and hence the power efficiency of the charge pump, the output voltage level, and the area efficiency of integrated circuits are improved.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: December 1, 2009
    Assignee: Sitronix Technology Corp.
    Inventor: Cheng-Chung Yeh