Patents by Inventor Wen Chi

Wen Chi 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).

  • LIGHT EMITTING FRAME AND HEATING DISSIPATING FAN USING THE SAME
    Publication number: 20090168400
    Abstract: In a light emitting frame and a heat dissipating fan using the light emitting frame, a light emitting element can be installed freely on the heat dissipating fan by a detachable light emitting frame composed of a separate main frame body, and the main frame body has a limit position portion passed through by a same fixing element, such that when the heat dissipating fan is installed to an electronic device, the light emitting frame is fixed. The invention overcomes the shortcomings of a prior art design of integrating the light emitting element with the heat dissipating element. In addition to lowering the manufacturing cost, the invention provides a number of selections for the material of the light emitting element and the light projecting angle.
    Type: Application
    Filed: December 27, 2007
    Publication date: July 2, 2009
    Inventor: Wen-Chi LIU
  • DRIVING CIRCUIT OF DISPLAY APPARATUS AND DRIVING METHOD THEREOF
    Publication number: 20090164859
    Abstract: A driving circuit of a display apparatus includes a decoder coupled to a plurality of scan lines of a display panel for decoding a plurality of input signals to output a plurality of scan line driving signals to thereby enable at least one scan line of the plurality of scan lines, and a plurality of control units (respectively coupled to the plurality of scan lines) for receiving an output enable signal to disable the plurality of scan lines during an interval between two scan lines being enabled.
    Type: Application
    Filed: March 4, 2008
    Publication date: June 25, 2009
    Inventors: Ming-Huang Liu, Wen-Chi Wu, Meng-Yong Lin, Bo-Chang Wu, Chi-Mo Huang
  • RECIPROCATING LINEAR SANDER
    Publication number: 20090163124
    Abstract: A reciprocating linear sander has a base, at least one abrasive assembly, at least one reciprocating device and a driving device. The base has two sides and a belt. Each abrasive assembly is mounted in the base above the belt and has a rotating axle and an abrasive brush mounted around the rotating axle. The reciprocating device is connected respectively to the abrasive assembly and has a driven axle coaxially connected to the rotating axle of the abrasive assembly to allow the rotating axle to move reciprocatorily and linearly. The driving device is connected to the reciprocating device, drives the rotating axle of the abrasive assembly and has a couple to rotate the driven axle of the reciprocating device.
    Type: Application
    Filed: December 19, 2007
    Publication date: June 25, 2009
    Inventor: Wen-Chi CHANG
  • Fractional frequency synthesizer and phase locked loop utilizing fractional frequency synthesizer and method thereof
    Patent number: 7548121
    Abstract: A fractional frequency synthesizer, applied to a phase-locked loop, includes a phase detector, a loop filter, a controllable oscillator, a first frequency divider, and a sigma-delta modulator (SDM). The phase detector generates a phase difference signal according to a reference signal and a feedback signal. The loop filter filters the phase difference signal to generate a filtered signal. The controllable oscillator generates the frequency signal according to the filtered signal. The first frequency divider generates the feedback signal by dividing a frequency of the frequency signal according to a dividing factor. The SDM determines the dividing factor according to a control signal.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: June 16, 2009
    Assignee: Realtek Semiconductor Corp.
    Inventors: Wen-Chi Wang, Tze-Chien Wang
  • Non-chromium containing black multi-layer coatings
    Patent number: 7541095
    Abstract: The disclosed invention relates to black multi-layer coatings for metallic substrates (1) or substrates having a metallic coating (2) and to articles covered, or partially covered with such coatings. The black coating consists of a black first layer (3) substantially comprised of nickel and a second polymeric silicate inorganic layer (4). The present invention may additionally have a third layer comprised substantially of organic constituents (5). This invention offers properties currently unavailable or insufficient in existing technologies. The present invention provides enhanced corrosion resistant, adherent black coatings which are thin enough to allow application to fasteners while providing a uniform black color, the combination of which have only been available previously with the use of hexavalent or trivalent chromium conversion coatings.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: June 2, 2009
    Assignees: Elisha Holding LLC, Kismart Corporation
    Inventors: Wan-Chu Wu, Wei-Liang Yang, Wen-Chi Chang
  • Positioning device for a projection apparatus
    Patent number: 7530698
    Abstract: A positioning device for positioning an integration rod module disposed in an optical path between a light source device and a projection lens within a projection apparatus includes a flexible element having a fixing plate section mounted securely on an inner surface of a casing interconnecting the light source device and the projection lens and enclosing the integration rod module, and a first distal plate section extending integrally from one end of the fixing plate section toward a rod cover mounted on the casing for resiliently urging a holder of the rod module to press against the inner surface of the casing at a position opposite to the flexible element. A stop member is disposed securely on the holder adjacent to the rod cover to facilitate abutment of the first distal plate section of the flexible element against the holder to enhance retention of the rod module within the casing.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: May 12, 2009
    Assignee: Coretronic Corporation
    Inventors: Tai-Li Chang, Wen-Chi Fu, Chun-How Shao
  • Circuit Device and Related Method for Mitigating EMI
    Publication number: 20090115477
    Abstract: In order to mitigate electromagnetic interference (EMI), the present invention provides a circuit device for an electronic device including a signal generating unit, a phase adjusting unit and an output interface. The signal generating unit generates a plurality of in-phase signals. The phase adjusting unit is coupled to the signal generating unit and is used for adjusting the plurality of in-phase signals to generate a plurality of output signals, where all or some of the output signals have different phases. The output interface is coupled to the phase adjusting unit and is used for outputting the plurality of output signals to a plurality of signal processing units for image processing.
    Type: Application
    Filed: March 31, 2008
    Publication date: May 7, 2009
    Inventors: Wen-Chi Lin, Che-Li Lin
  • Oscillating apparatus with adjustable oscillating frequency
    Patent number: 7515009
    Abstract: The present invention relates to an oscillating apparatus. The oscillating apparatus includes a biasing circuit, a multi-vibrator, a detecting circuit, and a selecting circuit. The biasing circuit is for generating a bias signal, wherein the biasing circuit includes a connecting port for using an impedance device to control an oscillating frequency or for directly connecting to external clock source as a reference clock. The multi-vibrator coupled to the biasing circuit for generating the oscillating frequency according to the quantity of the biasing signal. The detecting circuit coupled to the connecting port for generating a detecting signal whether the connecting port is coupled to the impedance device or the external clock source. The selecting circuit includes an AND gate coupled to the multi-vibrator and the selection signal and an OR gate coupled to the AND gate and the connecting port.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: April 7, 2009
    Assignee: Ili Technology Corp.
    Inventors: Wen-Chi Wu, Yao-Ching Wang, Chi-Mo Huang
  • Linear sander
    Patent number: 7503832
    Abstract: A linear sander has a base, at least one rough abrasive assembly, at least one fine abrasive assembly and a reciprocating device. The base has two sides and a belt. Each rough abrasive assembly is mounted on the base above the belt and has a rotating axle and an abrasive brush mounted around the rotating axle. Each fine abrasive assembly is rotatable mounted on the base is aligned obliquely to the mounting shafts and has two mounting brackets, two mounting shafts and multiple abrasive rollers. The reciprocating device is connected to the abrasive assembly and has a pivot bracket mounted securely on one of the mounting brackets, two drive bars mounted on move the abrasive rollers linearly along the mounting shafts and a linear driver connected to the drive bar.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: March 17, 2009
    Inventor: Wen-Chi Chang
  • FOLDING ELECTRONIC DEVICE AND ENGAGING STRUCTURE
    Publication number: 20090058101
    Abstract: A folding electronic device includes a cover and a main body. The cover includes a groove. The main body includes an engaging structure. The engaging structure includes a pushing element, an elastic element connected to the pushing element, an engaging element and a base. The engaging element includes a first connector and an engaging portion. The first connector is disposed on two sides of the engaging portions. The engaging portion is connected to or is detached from the groove. The base comprises an accommodating portion and a second connector. The pushing element and the elastic element are disposed in the accommodating portion. The second connector is disposed on two sides of the base. The engaging element is installed across the base. The first connector pivots on the second connector.
    Type: Application
    Filed: January 7, 2008
    Publication date: March 5, 2009
    Applicant: QUANTA COMPUTER INC.
    Inventors: Chih-Chiang Hsu, Wen-Chi Huang
  • Sigma-delta modulator capable of compensating a time delay
    Patent number: 7495593
    Abstract: A sigma-delta modulator is disclosed. The sigma-delta modulator includes a first integrator, a second integrator, an analog-to-digital converter, a digital-to-analog converter (DAC), and a compensating device. The first integrator receives an input signal for generating a first output signal. The second integrator receives the first output signal for generating a second output signal. The ADC converts the second output signal into a digital modulation signal. The DAC converts the digital modulation signal into an analog feedback signal. The analog feedback signal is transmitted to the first integrator and the second integrator. The compensating device is for compensating the analog feedback signal for a time delay caused by a feedback loop from the ADC through the DAC to the first integrator.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: February 24, 2009
    Assignee: Realtek Semiconductor Corp.
    Inventor: Wen-Chi Wang
  • Digital amplifier and method thereof
    Patent number: 7495490
    Abstract: An apparatus includes a first trigger, a second trigger, a pulse generator, and a control unit. The first trigger generates a first trigger signal and a first level signal; the second trigger generates a second trigger signal and a second level signal; the pulse generator generates a digital output signal according to the first and the second level signals; and the control unit outputs the first and the second control voltages according to the digital input signal and the digital output signal.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: February 24, 2009
    Assignee: Realtek Semiconductor Corp.
    Inventors: Tze-Chien Wang, Wen-Chi Wang
  • APPARATUS FOR DYNAMIC DEPLOYMENT OF PIN FUNCTIONS ON A CHIP
    Publication number: 20090045837
    Abstract: An apparatus for dynamic deployment of pin functions on a chip is disclosed in the present invention. The apparatus comprises: an input pin receiving unit, capable of integrating a plurality of pins and selecting pin functions according to a program; an output pin control unit, capable of issuing a control signal to the plurality of pins; and a signal control unit, controlled by the program and coupled to the input pin receiving unit and the output pin control unit so as to communicate therebetween; wherein the pin functions are designated by the user to select an output signal for each of the plurality of pins according to the program.
    Type: Application
    Filed: April 8, 2008
    Publication date: February 19, 2009
    Applicant: HOLTEK SEMICONDUCTOR INC.
    Inventors: WEN-CHI HSU, JEN-HO KAN, JIA-JOU TSAI
  • DATA WEIGHTED AVERAGE CIRCUIT AND DYNAMIC ELEMENT MATCHING METHOD
    Publication number: 20090040087
    Abstract: A data weighted average circuit is disclosed which includes a lookup unit and a storage unit. The invention uses a lookup table to speed up the circuit operation. Besides, the operation delay is not affected by various orders of the data weighted average circuit and various bit-widths of input data.
    Type: Application
    Filed: August 7, 2008
    Publication date: February 12, 2009
    Applicant: Realtek Semiconductor Corp.
    Inventors: Chang-Shun Liu, Yi-Chang Tu, Wen-Chi Wang
  • DOCKING STATION AND EXPANDABLE COMPUTER SYSTEM
    Publication number: 20090043936
    Abstract: A docking station is used for cooperating with a computer host, and the computer host has a first power connecting portion and a first peripheral component connecting portion. The docking station includes a casing, a second power connecting portion and a second peripheral component connecting portion. The casing is used for disposing the computer host. The second power connecting portion and the second peripheral component connecting portion are disposed at the casing. When the computer host is disposed at the casing, the second power connecting portion is connected to the first power connecting portion to transmit a power signal to the computer host, and the second peripheral component connecting portion is connected to the first peripheral component connecting portion to transmit at least one peripheral component signal to the computer host. An expandable computer system is also disclosed.
    Type: Application
    Filed: June 13, 2008
    Publication date: February 12, 2009
    Inventors: Cheng-Hung YANG, Kuei-Kang Chang, Chi-Chun Chen, Wan-Shan Lin, Wen-Chi Kuo
  • Dioscorea Extracts
    Publication number: 20090041803
    Abstract: An extract from a tuber of a Dioscorea plant is disclosed. Also disclosed is a composition containing an extract from a tuber of a Dioscorea plant, as well as methods of using the extract and composition.
    Type: Application
    Filed: September 2, 2008
    Publication date: February 12, 2009
    Applicant: Academia Sinica
    Inventors: Ning-Sun Yang, Jeng-Hwan Wang, Wen-Chi Wei
  • BURGLARPROOF APPARATUS FOR AN ELECTRONIC MACHINE
    Publication number: 20090027201
    Abstract: A burglarproof apparatus, which is built in an electronic machine with a communication connecting port being electrically connected to an end of a communication cable and another end of the communication cable being connected to a communication device, includes a detect unit, a controller and a warning component. The detect unit is connected to the communication connecting port via the communication cable for detecting if a communication signal, which is output by the communication device, is available at the communication connecting port and outputting a trigger signal in case of the communication signal being not provided. The controller is connected to the detect unit to receive the trigger signal and control the warning component to perform an action.
    Type: Application
    Filed: July 24, 2007
    Publication date: January 29, 2009
    Inventor: Wen-Chi Chen
  • ANGLE-ADJUSTING ASSEMBLY AND ANGLE-ADJUSTING MECHANISM THEREOF
    Publication number: 20090002646
    Abstract: An angle-adjusting mechanism includes a first disk, a second disk, a fixing element and an elastic element. The first disk has a spindle hole and a plurality of positioning end notches disposed adjacent to the spindle hole. The second disk has a spindle fitting the spindle hole to enable the first disk to rotate around a rotation axis of the spindle relative to second disk, and has a positioning end bump located adjacent to the spindle to engage with one of the positioning end notches. The fixing element mounts the second disk onto the supporting bracket and limits the second disk to move along the rotation axis of the spindle within a preset range. The elastic element is mounted between the fixing element and the second disk to force the second disk to lean on the first disk.
    Type: Application
    Filed: November 21, 2007
    Publication date: January 1, 2009
    Applicant: CORETRONIC CORPORATION
    Inventors: Wen-Chi Fu, Tai-Li Chang
  • Elevating mechanism
    Patent number: 7467769
    Abstract: An elevating mechanism for a projection apparatus includes a base, a movable leg, an elastomer, a decelerating module and a fixing component. The base is connected with the projection apparatus and has a slide, an accommodating space and an opening disposed at one end of the base. The accommodating space is located inside the base and communicated with the opening. The slide is in a sidewall of the base and communicated with the accommodating space. The movable leg is disposed through the opening and the accommodating space, and one end of the elastomer is disposed on the base. The movable leg is suitable for protruding from the opening of the base by the elastomer. Moreover, the decelerating module is disposed on the movable leg and is in the slide. The decelerating module is suitable for contacting with the base. The fixing component is suitable for fixing the movable leg.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: December 23, 2008
    Assignee: Coretronic Corporation
    Inventors: Chun-How Shao, Wen-Chi Fu, Tai-Li Chang
  • LOW POWER-CONSUMPTION DATA PROCESSOR
    Publication number: 20080313421
    Abstract: A low power-consumption data processor, wherein instruction decoding is performed on an instruction memory and an instruction register by an instruction decoding unit through an instruction bus, being characterized in that an instruction decoding circuit is disposed between the instruction register, a program counter and an arithmetic logic unit, wherein a new value in an instruction is transmitted on a new instruction bus (NIB) when the decoded result is an operation/jump/call instruction and, otherwise, the new value is transmitted on an original instruction bus (IB).
    Type: Application
    Filed: March 3, 2008
    Publication date: December 18, 2008
    Applicant: HOLTEK SEMICONDUCTOR INC.
    Inventors: Wen-Chi Hsu, Yu-Kuang Wu