Patents by Inventor Wen Yuan

Wen Yuan 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).

  • Intake and exhaust guide device for pneumatic tool
    Publication number: 20080023263
    Abstract: An intake and exhaust guide device for pneumatic tool comprises mainly a handle furnished with an intake passage and an exhaust passage, of which each outer end is furnished with a screw hole for directly or indirectly connected with an connector of an intake tube or an exhaust tube; the two connectors of the pneumatic tool are connected respectively with two pressure tubes fastened together in parallel; one of the two pressure tubes is connected with an output end of the compressed air, while the other pressure tube is connected with a muffler; during the pneumatic tool being operated, the compressed air can be exhausted simultaneously without having any exhaust noise as a result of the two pressure tubes being fastened together in parallel.
    Type: Application
    Filed: January 12, 2007
    Publication date: January 31, 2008
    Inventor: Wen-Yuan Wang
  • Ink reservoir for inkjet printhead
    Publication number: 20080007601
    Abstract: An ink reservoir (1) for maintaining ink (10) at a negative pressure by using the suction provided the printhead and then regulating the negative pressure with a pressure regulator (16) that allows air into cartridge at a specified pressure difference. The pressure regulator may be a porous member such as a membrane or mesh filter, or a simple pressure relief valve. The membrane (16), mesh or foam is selected such that its bubble point equates to the specified pressure difference.
    Type: Application
    Filed: July 10, 2006
    Publication date: January 10, 2008
    Inventors: Wen-Yuan Tsai, Akira Nakazawa, Kia Silverbrook
  • COMMUNICATION SYSTEM AND OSCILLATION SIGNAL PROVISION METHOD
    Publication number: 20080001681
    Abstract: A communication system and an oscillation signal provision method based thereon are provided. In the communication system, a high frequency oscillator generates a first high frequency signal upon receipt of an enable signal. The first high frequency signal is commonly shared by a first module and a second module. The first module is coupled to the high frequency oscillator, operating in either busy or idle mode, wherein the first module operates at the first high frequency signal when in busy mode. The second module converts the first high frequency signal to a second high frequency signal and operates at the second high frequency signal when in busy mode.
    Type: Application
    Filed: May 14, 2007
    Publication date: January 3, 2008
    Applicant: MEDIATEK INC.
    Inventors: Ti-wen Yuan, Chung-Shine Huang
  • PACKAGE STRUCTURE FOR PANEL MODULE AND METHOD USING THE SAME
    Publication number: 20070285904
    Abstract: A package structure for packaging a panel module. The panel module comprises at least a gap. The package structure comprises a base and a cover. The base comprises a first loading surface for loading the panel module and at least one first engaging portion corresponding to the gap. The cover comprises a first covering surface and a second engaging portion corresponding to the first engaging portion. The first engaging portion and the second engaging portion connect the first loading surface and the first covering surface.
    Type: Application
    Filed: October 19, 2006
    Publication date: December 13, 2007
    Applicant: AU OPTRONICS CORP.
    Inventors: Chung-Kuan Ting, Shih-Chi Chen, Wen-Yuan Chang, Chia-Ching Wu
  • Multiple base station automatic frequency control architecture in wireless communication system
    Patent number: 7295821
    Abstract: An automatic frequency control (AFC) system applies in a mobile station for automatically controlling a local frequency signal to be substantially synchronized with an input signal which is a first received signal SH from a base station, and for being capable of shifting the frequency of the local frequency signal to be close to that of a second received signal Snew from another base station when the input signal is changed from the first received signal SH to the second received signal Snew. The AFC system comprises a control module, a memory unit, and an automatic frequency controller. The memory unit stores a plurality of AFC parameter sets; each AFC parameter set corresponds to a base station within the wireless cellular system.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: November 13, 2007
    Assignee: MediaTek Inc.
    Inventor: Ti-Wen Yuan
  • [Operating method and changer for optical module/printer module system]
    Patent number: 7289250
    Abstract: A method of operating an optical module/printer module system through a changer such that either the optical module or the printer module is driven. A first module and a second module is defined such that if the first module is an optical module, the second module is a printer module and if the first module is a printer module, the second module is an optical module. The operating method includes the following steps. In step one, the changer engages with the first module and drives the first module. In step two, the changer rotates so that the changer detaches from the first module and engages with the second module. In step three, the changer drives the second module.
    Type: Grant
    Filed: July 4, 2003
    Date of Patent: October 30, 2007
    Assignee: Transpacific IP, Ltd.
    Inventors: Wen-Yuan Chang, Chih-Wen Huang
  • Method of dynamically determining a maximum polyphony number according to operation mode and smoothly changing polyphony number when switching operation modes
    Patent number: 7285712
    Abstract: A method of dynamically determining a maximum polyphony number is used in an electronic device, which has S tone generators. First, an operation mode of the electronic device is detected. Next, a residual computing power of the electronic device is obtained according to the operation mode. Then, a maximum polyphony number is determined according to a constant computing power, which is required to synthesize a polyphony, and the residual computing power. Next, the states of T tone generators of the S tone generators are set to be an ON state according to the maximum polyphony number, wherein T is a positive integer and is smaller than or equal to S.
    Type: Grant
    Filed: April 19, 2005
    Date of Patent: October 23, 2007
    Assignee: MediaTek Incorporation
    Inventors: Yu-Cheng Hsieh, Ti-Wen Yuan
  • METHOD AND RELATED DEVICE OF SOURCE DRIVER WITH REDUCED POWER CONSUMPTION
    Publication number: 20070229338
    Abstract: A method capable of reducing power consumption of source drivers is disclosed. The method includes a reference voltage source charging or discharging a loading end of a source driver to a reference voltage having a polarity the same as a polarity of a target voltage and a voltage level near a voltage level of the target voltage, and an output stage of the source driver charging or discharging the loading end to the target voltage.
    Type: Application
    Filed: April 1, 2007
    Publication date: October 4, 2007
    Inventors: Wen-Yuan Tsao, Chang-San Chen, Che-Li Lin
  • Semiconductor packaging substrate and method of producing the same
    Patent number: 7253526
    Abstract: A semiconductor packaging substrate and a process for producing the same is disclosed. An internal circuit is formed by lamination. Then, external circuit is formed on the internal circuit by build-up technology. The substrate can be used as a flip-chip ball grid array packaging substrate with high density and small pitch. Furthermore, the substrate of the invention has a plurality of bonding pads thereon. The bump pads are divided into power/ground bump pads, first signal bump pads, and second signal bump pads. The first signal bump pads surround the power/ground bump pads and are surrounded by the second signal bump pads.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: August 7, 2007
    Assignee: VIA Technologies, Inc.
    Inventors: Chi-Hsing Hsu, Wen-Yuan Chang
  • RANDOM NUMBER GENERATOR AND METHOD FOR GENERATING RANDOM NUMBER
    Publication number: 20070133790
    Abstract: A random number circuit includes an oscillator capable of generating a clock signal including a sequence of clocks at a center frequency, the clock signal having a frequency offset from the center frequency, a reset circuitry capable of generating a reset signal indicating a transition from a first state to a second state, an initial value generator capable of generating an initial value, and a counter coupled to at least one of the oscillator, the reset circuitry, and the initial value generator and capable of receiving at least one of the clock signal, the reset signal, and the initial value, the counter capable of generating a random number, the random number being dependent on at least one of the frequency offset, a timing of the transition, and the initial value.
    Type: Application
    Filed: June 27, 2006
    Publication date: June 14, 2007
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shao-Chang CHANG, Kai-Cheung JUANG, Wen-Yuan LIU
  • CHIP PACKAGE AND CORELESS PACKAGE SUBSTRATE THEREOF
    Publication number: 20070132072
    Abstract: A chip package includes a coreless package substrate and a chip. The coreless package substrate includes an interconnection structure and a ceramic stiffener. The interconnection structure has a first inner circuit, a carrying surface and a corresponding contact surface. The first inner circuit has multiple contact pads disposed on the contact surface. The ceramic stiffener is disposed on the carrying surface and has a first opening. In addition, the chip is disposed on the carrying surface and within the first opening and electrically connected to at least one of the contact pads.
    Type: Application
    Filed: August 24, 2006
    Publication date: June 14, 2007
    Applicant: VIA TECHNOLOGIES, INC.
    Inventor: Wen-Yuan Chang
  • Optical scanner
    Patent number: 7225985
    Abstract: An optical scanner is provided with a carrier, a casing, a driving unit and a transmission unit. The carrier has a connecting unit and an optical system mounted thereon. The casing has a guiding rail formed as integral unit on the interior wall. The guiding rail has at least a fastener for latching onto the connecting unit of the carrier. The transmission unit links up the driving unit and the carrier. The driving unit drives the transmission unit and then the transmission unit pulls the carrier along the guiding rail through the linkage between the connecting unit and the fastener.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: June 5, 2007
    Inventors: Wen-Yuan Chang, Jen-Shou Tseng
  • Shock absorbent packaging structure
    Patent number: 7225925
    Abstract: A packaging structure for a container. The packaging structure includes a main frame including a first portion, a second portion and a connecting plate connecting the first and second portions, and a plurality of separators inserted in first and second grooves defined at the first and second portions respectively. The glass substrate is sealed in a loading slot formed by the separators.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: June 5, 2007
    Assignee: AU Optronics Corp.
    Inventors: Chiu-Chun Chen, Bo-Chi Chou, Wen-Yuan Chang
  • Radio frequency identification tag with embedded memory testing scheme and the method of testing the same
    Publication number: 20070115016
    Abstract: A radio frequency identification (RFID) tag with embedded memory testing scheme and the method of testing the same is disclosed, in which the RFID tag is comprised of an analog block, a digital block and a memory block. Operationally, as the analog block receives and demodulates a memory self-test signal issued from a reader, the memory block is driven to issue a non-digital memory state signal to be received by the analog block where it is being converted into a digital memory state signal, and then the digital memory state signal is being transmitted to the digital block for enabling the same to make an evaluation to determine whether the received digital memory state signal fall within the range representing the memory is in good condition, and thereafter, the evaluation is send to the reader by the RFID tag so as to enable the reader to select a posterior process to be perform accordingly.
    Type: Application
    Filed: January 4, 2006
    Publication date: May 24, 2007
    Inventors: Shao-Chang Chang, Chien-Pin Lee, Wen-Yuan Liu
  • Arrangement of conductive pads on grid array package and on circuit board
    Publication number: 20070080456
    Abstract: The present invention discloses a dense arrangement in the conductors of a package and the corresponding conductive pads of a circuit board. The conductors and the corresponding conductive pads are separated into at least a first group in a peripheral region of the grid array package, and a second group in another region of the grid array package. Most in the first group of conductive pads are apart at a first pitch, most in the second group of conductive pads are apart at a second pitch which is less than the first pitch. According to the shrinking in the conductive trace on a conductive layer and the shrinking in the through hole, the first pitch and the second pitch are optimized for the maximum conductors and the corresponding conductive pads.
    Type: Application
    Filed: October 11, 2005
    Publication date: April 12, 2007
    Inventor: Wen-Yuan Chang
  • ISFET using PbTiO as sensing film
    Patent number: 7190013
    Abstract: A PbTiO3/SiO2-gated ISFET device comprising a PbTiO3 thin film as H+-sensing film, and a method of forming the same. The PbTiO3 thin film is formed through a sol-gel process which offers many advantages, such as, low processing temperature, easy control of the composition of the film and easy coating over a large substrate. The PbTiO3/SiO2 gated ISFET device of the present invention is highly sensitive in aqueous solution, and particularly in acidic aqueous solution. The sensitivity of the present ISFET ranges from 50 to 58 mV/pH. In addition, the disclosed ISFET has high linearity. Accordingly, the disclosed ISFET can be used to detect effluent.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: March 13, 2007
    Assignee: National Yulin University of Science and Technology
    Inventors: Jung-Chuan Chou, Wen Yuan Liu, Wen Bin Hong
  • Organic light emitting diode display having red, blue, and green colors emitted using heating circuit structure
    Patent number: 7183700
    Abstract: An organic light emitting diode (OLED) display includes a substrate defined with a plurality of pixel areas, a heating circuit structure disposed on the substrate, and a plurality of OLEDs corresponding to each pixel area. The heating circuit structure includes two conductive lines not connected to each other, a plurality of heating lines electrically connected to the two conductive lines and covering portions of each pixel areas, and a ground electrode.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: February 27, 2007
    Assignee: TPO Displays Corp.
    Inventors: Wen-Yuan Guo, Wei-Chieh Hsueh, An Shih, Shih-Chang Chang
  • Teaching toy
    Patent number: D546390
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: July 10, 2007
    Assignee: Youth Toy Enterprise Co., Ltd.
    Inventor: Wen-Yuan Lin
  • Compact power supply
    Patent number: D553564
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: October 23, 2007
    Assignee: Chinfa Electronics Inds. Co., Ltd.
    Inventor: Wen-Yuan Kuo
  • Power supply
    Patent number: D559179
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: January 8, 2008
    Assignee: Chinfa Electronics Ind. Co., Ltd.
    Inventor: Wen-Yuan Kuo