Patents by Inventor Yi-Hua Wang

Yi-Hua Wang 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).

  • Patent number: 8014182
    Abstract: A power supply device of controlling feedback synchronization is connected to an electric power source for obtaining an input power and includes first and second converters for modulating the input power. The first and second converters include first and second output terminals for providing first and second output power respectively. The power supply device further includes a feedback synchronization unit electrically coupled to the first and second output terminals of the first and second converters for obtaining first and second feedback signals, and producing and transmitting a synchronous feedback signal to the second converter according to a voltage difference of the first and second feedback signals to synchronizing output voltage level of the second converter with the first converter. The aforementioned circuit can control the synchronization of a voltage boost time and output time of the first and second converters.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: September 6, 2011
    Assignee: Zippy Technology Corp.
    Inventors: Heng-Chia Chang, Yi-Hua Wang
  • Patent number: 7984751
    Abstract: A double-acting device for generating a synthetic jet is provided. The double-acting device includes a chamber having a cavity for a working fluid, a separating element for dividing the chamber into at least two sub-chambers, a control system connected to the chamber for controlling the separating element to act reciprocatingly, an input system connected to the chamber for inputting the working fluid to the chamber therethrough and an output system connected to the chamber for outputting the working fluid from the chamber therethrough. When the working fluid is pushed and pulled by a reciprocating action of the separating element, a train of vortices would be puffed and a non-zero-net-mass-flux fluid is generated through a designed structure and a defined arrangement of the input system and the output system.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: July 26, 2011
    Assignee: National Taiwan University
    Inventors: An-Bang Wang, Zdenek Travnicek, Yi-Hua Wang, Ming-Chang Hsu
  • Publication number: 20110145620
    Abstract: The present invention discloses a method of using a power supply to perform far-end monitoring of an electronic system. The electronic system has at least one power supply. The power supply has a signal integration unit receiving working parameters of the electronic system and a communication unit transmitting the working parameters to a communication network. The method of the present invention comprises steps: setting warning conditions, collecting working parameters, performing judgment, and performing far-end warning. The warning conditions are defined and stored in the signal integration unit. The signal integration unit collects the working parameters of the electronic system persistently. When determining that at least one of the working parameter meets the warning conditions, the signal integration unit generates a warning signal. The communication unit receives the warning signal and transmits the warning signal to the communication network.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 16, 2011
    Inventors: Tsun-Te SHIH, Yu-Yuan Chang, Yi-Hua Wang, Yu-Lung Huang, Chia-Lun Liu, Tsung-Chun Chen
  • Patent number: 7939963
    Abstract: A power supply to provide multiple synchronous outputs includes a standby power system to receive input power and regulate to become standby power and a main power system to receive the input power and regulate to become main output power. The main power system has a rectification output unit to deliver the main output power. The power supply further has at least one delay trigger unit to receive the main output power and a voltage regulation output unit. The delay trigger unit sets a voltage judgment level and determines whether to output a trigger signal based on the main output power being greater or smaller than the voltage judgment level. The voltage regulation output unit can be activated by getting the standby power. According to the generation time series of the trigger signal, the time series to generate the secondary output power can be regulated.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: May 10, 2011
    Assignee: Zippy Technology Corp.
    Inventors: Heng-Chia Chang, Yi-Hua Wang
  • Publication number: 20110074212
    Abstract: A power supply with an integrated power system has a common transformer. After the power supply receives input power, the common transformer generates an induction power at the secondary side. The power supply further includes a standby power system receiving the induction power and outputting a standby power, an actuation switch with one end electrically bridging the common transformer and the standby power system, a primary power system connecting to the other end of the actuation switch, and a power management unit receives the standby power to be activated. The standby power system modulates and transforms the induction power to the standby power to start operation of the power management unit. Users can trigger the power management unit to output an enabling signal to conduct the actuation switch to be ON so that the primary power system can receive the induction power and transform to output the primary output power.
    Type: Application
    Filed: September 25, 2009
    Publication date: March 31, 2011
    Inventors: Yi-Hua WANG, Yu-Yuan Chang
  • Patent number: 7903437
    Abstract: The present invention discloses a frequency-changing voltage regulation circuit, which applies to a power supply device that has a booster unit and a power conversion unit. The booster unit modulates an input power and converts the input power into a boosted power. The boost control circuit is coupled to the frequency-changing voltage regulation circuit of the present invention. The frequency-changing voltage regulation circuit comprises: a voltage detection circuit and a frequency setting circuit. The voltage detection circuit detects the input power sent to the booster unit and generates an input level signal according to the value of the input power. The frequency setting circuit generates a reference frequency signal corresponding to the input level signal and uses the reference frequency signal to modulate the frequency that the booster unit performs power conversion.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: March 8, 2011
    Assignee: Zippy Technology Corp.
    Inventors: Yu-Yuan Chang, Yi-Hua Wang
  • Publication number: 20110018801
    Abstract: A visual input/output device with a light shield is disclosed. The device includes an active area for performing visual input/output tasks, and a non-active area surrounding the active area in the peripheral area of the device. The light shield is formed in the non-active area for substantially preventing unwanted light from interfering with the active area. The light shield is formed on a same layer as a color filter in the active area, and the light shield is made of black pigment or carbon.
    Type: Application
    Filed: July 27, 2009
    Publication date: January 27, 2011
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Yi-Hua WANG, Yu-Lun LO
  • Patent number: 7824736
    Abstract: A micro patch coating device includes a coating die with a micro channel structure. A coating fluid is supplied through a coating fluid inlet and an auxiliary fluid is supplied through an auxiliary fluid inlet. After a segment of a predetermined length of the coating fluid is formed at a two-phase fluid output section, the coating fluid flow is intercepted. In turn, a segment of predetermined length of the auxiliary fluid is formed at the two-phase fluid output section, and then the auxiliary fluid flow is intercepted. A two-phase fluid is formed and flows out of the coating die to the substrate to form micro patches thereon.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: November 2, 2010
    Assignee: National Taiwan University
    Inventors: An-Bang Wang, I-Chun Lin, Yi-Hua Wang, Chih-Kung Lee
  • Patent number: 7733444
    Abstract: Residual direct-current charges may be accumulated and distributed non-uniformly on the built-in color filters in a displaying panel such as the liquid-crystal-on-silicon displaying device, and thus results in the non-uniformity of the internal electric field that controls the arrangement of liquid crystal molecules. To reduce residual direct-current charges so as to cause the internal electric field to be substantially uniform, the present invention provides a structure of the display panel including a plurality of shields for respectively enclosing a plurality of color filters, wherein each shield is connected to a corresponding pixel electrode by a conductive wire.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: June 8, 2010
    Assignee: Himax Display, Inc.
    Inventors: Yi Hua Wang, Wei Hsiao Chen, Shu Chan Hsiao
  • Publication number: 20100127674
    Abstract: A power supply device of controlling feedback synchronization is connected to an electric power source for obtaining an input power and includes first and second converters for modulating the input power. The first and second converters include first and second output terminals for providing first and second output power respectively. The power supply device further includes a feedback synchronization unit electrically coupled to the first and second output terminals of the first and second converters for obtaining first and second feedback signals, and producing and transmitting a synchronous feedback signal to the second converter according to a voltage difference of the first and second feedback signals to synchronizing output voltage level of the second converter with the first converter. The aforementioned circuit can control the synchronization of a voltage boost time and output time of the first and second converters.
    Type: Application
    Filed: November 26, 2008
    Publication date: May 27, 2010
    Inventors: Heng-Chia Chang, Yi-Hua Wang
  • Patent number: 7719780
    Abstract: A color filter array suitable for a display panel is provided. The color filter array includes a first pixel, a second pixel, a third pixel and a forth pixel. The first pixel is consisted of a green filter, a blue filter and a transparent filter. The second pixel is consisted of a red filter, a blue filter and a transparent filter. The third pixel is consisted of a red filter, a green filter and a transparent filter. The fourth pixel is consisted of a red filter, a blue filter and a green filter. The architecture of the color filter array is able to increase the image brightness of the display panel.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: May 18, 2010
    Assignee: Himax Display, Inc.
    Inventors: Yi-Hua Wang, Bing-Jei Liao
  • Publication number: 20100109432
    Abstract: A power supply to provide multiple synchronous outputs includes a standby power system to receive input power and regulate to become standby power and a main power system to receive the input power and regulate to become main output power. The main power system has a rectification output unit to deliver the main output power. The power supply further has at least one delay trigger unit to receive the main output power and a voltage regulation output unit. The delay trigger unit sets a voltage judgment level and determines whether to output a trigger signal based on the main output power being greater or smaller than the voltage judgment level. The voltage regulation output unit can be activated by getting the standby power. According to the generation time series of the trigger signal, the time series to generate the secondary output power can be regulated.
    Type: Application
    Filed: November 6, 2008
    Publication date: May 6, 2010
    Inventors: Heng-Chia CHANG, Yi-Hua Wang
  • Publication number: 20100072047
    Abstract: An exemplary keypad assembly includes: a printed circuit board (PCB) comprising a plurality of fixed contact points formed thereon, an elastic sheet disposed on the PCB, the elastic sheet comprising a base and many switches fixed on the base above the fixed contact points correspondingly; many key buttons, each key button comprising a main portion, and a pressing portion extending downward from the main portion; a light shielding sheet defining a plurality of through holes, the light shielding sheet integrally formed with the key buttons, the key buttons respectively passing through each of the through holes of the light shield sheet. The light shielding sheet with the key buttons is disposed above the elastic sheet, each pressing portion of each key button corresponding to each switch. The keypad assembly has a thin configuration due to a combination configuration of the light shielding sheet and the key buttons.
    Type: Application
    Filed: March 17, 2009
    Publication date: March 25, 2010
    Applicant: CHI MEI COMMUNICATION SYSTEMS, INC.
    Inventors: FU-HSIN SUNG, YI-HUA WANG
  • Publication number: 20100058244
    Abstract: An icon operation method is provided. The method is suitable for a display displaying an operation option image having several icons. Each icon represents an operation. The method comprises steps of grouping some of the icons so that the icons in the same group are partially stacked with each other.
    Type: Application
    Filed: August 27, 2009
    Publication date: March 4, 2010
    Applicant: HTC CORPORATION
    Inventor: Yi-Hua Wang
  • Publication number: 20090288032
    Abstract: An electronic device and a user interface display method thereof are provided. The method includes the following steps. First, organize a plurality of computer programs and a web browser executable on the electronic device into a virtual book. Each page of the virtual book includes a user interface of one of the computer programs or a web page displayed by the web browser. Next, display one of the pages as a current page so that the user interface or the web page of the current page is accessible to a user of the electronic device. Next, display a stand-up view of the virtual book in response to a first operating action performed by the user. The stand-up view includes a plurality of the pages adjacent to the current page and a virtual switch attached to a side of the virtual book.
    Type: Application
    Filed: December 30, 2008
    Publication date: November 19, 2009
    Applicant: HTC CORPORATION
    Inventors: Wen-Chi Chang, Yi-Hua Wang, Tai-Ling Lu
  • Publication number: 20090267909
    Abstract: An electronic device and a user interface display method thereof are provided. The method organizes a plurality of computer programs and a web browser executable on the electronic device into a virtual book. Each page of the virtual book includes a user interface of one of the computer programs or a web page displayed by the web browser. The method also displays one of the pages as a destination page in response to an operating action of a user on the electronic device so that the user interface or the web page of the destination page is accessible to the user.
    Type: Application
    Filed: December 25, 2008
    Publication date: October 29, 2009
    Applicant: HTC CORPORATION
    Inventors: Chi-Nien Chen, Yi-Ching Liu, Yi-Hua Wang
  • Publication number: 20090261789
    Abstract: The present invention discloses a frequency-changing voltage regulation circuit, which applies to a power supply device that has a booster unit and a power conversion unit. The booster unit modulates an input power and converts the input power into a boosted power. The boost control circuit is coupled to the frequency-changing voltage regulation circuit of the present invention. The frequency-changing voltage regulation circuit comprises: a voltage detection circuit and a frequency setting circuit. The voltage detection circuit detects the input power sent to the booster unit and generates an input level signal according to the value of the input power. The frequency setting circuit generates a reference frequency signal corresponding to the input level signal and uses the reference frequency signal to modulate the frequency that the booster unit performs power conversion.
    Type: Application
    Filed: April 21, 2008
    Publication date: October 22, 2009
    Inventors: Yu-Yuan CHANG, Yi-Hua Wang
  • Publication number: 20090213315
    Abstract: A liquid crystal on silicon (LCOS) display panel and an electronic device using the same are provided. The LCOS display panel includes a silicon substrate, a transparent substrate, a color filter layer, an over-coating layer, an alignment layer, and a liquid crystal layer. The transparent substrate is opposite the silicon substrate. The color filter layer is on the silicon substrate and between the silicon substrate and the transparent substrate. The over-coating layer is on the color filter layer, and the alignment layer is on the over-coating layer. The liquid crystal layer is between the alignment layer and the transparent substrate.
    Type: Application
    Filed: February 21, 2008
    Publication date: August 27, 2009
    Applicant: Himax Display, Inc.
    Inventor: Yi-Hua Wang
  • Publication number: 20090178786
    Abstract: A double-acting device for generating a synthetic jet is provided. The double-acting device includes a chamber having a cavity for a working fluid, a separating element for dividing the chamber into at least two sub-chambers, a control system connected to the chamber for controlling the separating element to act reciprocatingly, an input system connected to the chamber for inputting the working fluid to the chamber therethrough and an output system connected to the chamber for outputting the working fluid from the chamber therethrough. When the working fluid is pushed and pulled by a reciprocating action of the separating element, a train of vortices would be puffed and a non-zero-net-mass-flux fluid is generated through a designed structure and a defined arrangement of the input system and the output system.
    Type: Application
    Filed: March 25, 2009
    Publication date: July 16, 2009
    Applicant: NATIONAL TAIWAN UNIVERSITY
    Inventors: An-Bang Wang, Zdenek Travnicek, Yi-Hua Wang, Ming-Chang Hsu
  • Publication number: 20090170553
    Abstract: A communication device and a method for auto-locking an input interface thereof are provided. In the present invention, an external volume received by the communication device having the input interface is determined when the communication device enters a communication mode. Thereafter, the external volume is compared to a predetermined volume. An input function of the input interface is disabled if the external volume exceeds the predetermined volume. As a result, activation of other functions due to unintended touch of the input interface during a phone call can be avoided.
    Type: Application
    Filed: December 17, 2008
    Publication date: July 2, 2009
    Applicant: HTC Corporation
    Inventors: Yi-Hua Wang, Yih-Feng Kao