Patents by Inventor Jie Wei

Jie Wei 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: 20100237975
    Abstract: A transformer power combiner includes a plurality of current combiners and a voltage combiner. The current combiners are coupled in series, and include a plurality of primary winding conductors magnetically coupled to a plurality of secondary winding conductors respectively. Each of the current combiners is configured to combine currents flowing therethrough. The voltage combiner is coupled to a series connection of the current combiners, and is configured to combine voltages across the current combiners to thereby generate an output of the transformer power combiner.
    Type: Application
    Filed: May 31, 2010
    Publication date: September 23, 2010
    Inventor: Jie-Wei Lai
  • Patent number: 7777570
    Abstract: A transformer power combiner having a plurality of input ports and an output port is provided. The transformer power combiner includes a plurality of primary winding conductors and a plurality of secondary winding conductors. The primary winding conductors are electrically connected to the input ports, respectively; in addition, each of the primary winding conductors is electrically connected between a positive terminal and a negative terminal of a corresponding input port. The secondary winding conductors are magnetically coupled to the primary winding conductors, respectively. The secondary winding conductors are configured in a topology including series connection and parallel connection between a positive terminal and a negative terminal of the output port.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: August 17, 2010
    Assignee: Mediatek Inc.
    Inventor: Jie-Wei Lai
  • Patent number: 7743820
    Abstract: The circulation main loop supplies the liquid coolant by means of the main pump to the cooling plate which cools the electronic element, and then, dissipates the heat by the main heat exchanger 20 to return the same to the reservoir tank. The circulation sub-loop supplies the liquid coolant by means of the sub-pump, and after dissipating the heat by the sub-heat exchanger, returns the same to the refrigerant tank. The controller controls as required the supply flow rate from the main pump and the sub-pump.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: June 29, 2010
    Assignee: Fujitsu Limited
    Inventor: Jie Wei
  • Patent number: 7737760
    Abstract: A mixer has a controllable load, a signal mixing module, and a controller. The controllable load is controlled by a control signal to change an equivalent load value thereof. The signal mixing module has an output port coupled to the controllable load and an input port coupled to an input signal, and is used for mixing the input signal with a local oscillation signal. The controller is coupled to the controllable load, and is used for generating the control signal to reduce the equivalent load value of the controllable load during switching transients of the local oscillation signal.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: June 15, 2010
    Assignee: Mediatek Inc.
    Inventor: Jie-Wei Lai
  • Patent number: 7706999
    Abstract: The invention discloses a circuit testing apparatus for testing a device under test. The circuit testing apparatus includes a precision measurement unit, a signal transformation module, and a microprocessor. The precision measurement unit is coupled to the device under test for providing a testing signal and receiving a measurement signal generated according to the testing signal. The signal transformation module is coupled to the precision measurement unit for receiving the measurement signal and transforming the measurement signal to a signal measurement result according to a predetermined manner. The microprocessor is coupled to the precision measurement unit and the signal transformation module for examining the signal measurement result to determine a test result for the device under test.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: April 27, 2010
    Assignee: Princeton Technology Corporation
    Inventors: Cheng-Yung Teng, Li-Jieu Hsu, Jie-Wei Huang, Huei-Huang Chen
  • Publication number: 20090314767
    Abstract: An electrical heating element, in particular for a hot-wedge film welding device, having two electrodes and a heating resistor arranged between the electrodes such that an application of an electrical voltage to the electrodes results in heat being produced along the length of the heating resistor. The heating resistor is designed to correspond to the shape of a heating wedge of a film welding machine, such that it can replace the heating cartridge and the hot wedge of a conventional film welding device. It is preferably produced from a conductive ceramic material and is distinguished by uniform heat distribution, good thermal conductivity and resistance to wear, as well as by excellent corrosion resistance.
    Type: Application
    Filed: January 25, 2007
    Publication date: December 24, 2009
    Inventors: Jie-Wei Chen, Alexander Greber
  • Publication number: 20090289687
    Abstract: A mixer has a controllable load, a signal mixing module, and a controller. The controllable load is controlled by a control signal to change an equivalent load value thereof. The signal mixing module has an output port coupled to the controllable load and an input port coupled to an input signal, and is used for mixing the input signal with a local oscillation signal. The controller is coupled to the controllable load, and is used for generating the control signal to reduce the equivalent load value of the controllable load during switching transients of the local oscillation signal.
    Type: Application
    Filed: May 20, 2008
    Publication date: November 26, 2009
    Inventor: Jie-Wei Lai
  • Patent number: 7603096
    Abstract: An embodiment of a mixer with carrier leakage self-calibrating is disclosed. The mixer comprises a double balanced mixer, a gm stage comprising a first processing unit and a second processing unit, a current duplicating circuit, a capacitor, a controller and a current compensation unit. The current duplicating circuit selects the first processing unit or the second processing unit and duplicates a duplicated current of the selected processing unit to charge the capacitor. The capacitor has a first terminal and a second terminal, wherein the second terminal is grounded and the first terminal receives the duplicated current. The controller determines a charge time of the capacitor to generate a compensation signal, wherein the charge time is the time that the voltage of the capacitor is charged to equal to a reference voltage. The current compensation unit receives the compensation signal to generate a compensation current to the mixer.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: October 13, 2009
    Assignee: Mediatek Inc.
    Inventors: Yuan-Hung Chung, Jie-Wei Lai
  • Publication number: 20090237883
    Abstract: A board unit comprises a board, a heat generating component mounted on a front surface of the board, a first heat transfer plate whose inner surface faces the front surface of the board and is received by the heat generating component, a heat insulating material that is superimposed on an outer surface of the first heat transfer plate and that insulates heat dissipation, a second heat transfer plate that continues to the first heat transfer plate and that defines a heat conducting surface and a heat receiver that is received by the heat conducting surface of the second heat transfer plate and that defines a flow path of a coolant.
    Type: Application
    Filed: February 11, 2009
    Publication date: September 24, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Jie WEI, Keizou TAKEMURA
  • Publication number: 20090231076
    Abstract: A transformer power combiner having a plurality of input ports and an output port is provided. The transformer power combiner includes a plurality of primary winding conductors and a plurality of secondary winding conductors. The primary winding conductors are electrically connected to the input ports, respectively; in addition, each of the primary winding conductors is electrically connected between a positive terminal and a negative terminal of a corresponding input port. The secondary winding conductors are magnetically coupled to the primary winding conductors, respectively. The secondary winding conductors are configured in a topology including series connection and parallel connection between a positive terminal and a negative terminal of the output port.
    Type: Application
    Filed: September 30, 2008
    Publication date: September 17, 2009
    Inventor: Jie-Wei Lai
  • Patent number: 7589593
    Abstract: An amplifier circuit for amplifying an input signal to generate an output signal is provided. The amplifier circuit has a stacked main amplifier, a parallel sub-amplifier, and a signal combiner. The stacked main amplifier includes a first amplifier unit for outputting a first amplified signal generated from processing the input signal; and a second amplifier unit for outputting a second amplified signal generated from processing the first amplified signal. The first amplifier unit and the second amplifier unit share bias current. The parallel sub-amplifier is coupled to the stacked main amplifier according to a parallel connection fashion, and outputs a third amplified signal generated from processing the input signal. The signal combiner combines the second amplified signal and the third amplified signal to generate the output signal.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: September 15, 2009
    Assignee: Mediatek Inc.
    Inventors: Jie-Wei Lai, Min Chen
  • Publication number: 20090189695
    Abstract: An amplifier circuit for amplifying an input signal to generate an output signal is provided. The amplifier circuit has a stacked main amplifier, a parallel sub-amplifier, and a signal combiner. The stacked main amplifier includes a first amplifier unit for outputting a first amplified signal generated from processing the input signal; and a second amplifier unit for outputting a second amplified signal generated from processing the first amplified signal. The first amplifier unit and the second amplifier unit share bias current. The parallel sub-amplifier is coupled to the stacked main amplifier according to a parallel connection fashion, and outputs a third amplified signal generated from processing the input signal. The signal combiner combines the second amplified signal and the third amplified signal to generate the output signal.
    Type: Application
    Filed: January 30, 2008
    Publication date: July 30, 2009
    Inventors: Jie-Wei Lai, Min Chen
  • Publication number: 20090116186
    Abstract: According to an aspect of an embodiment, a cooling unit includes a first heat dissipating fin member including first heat dissipating fins extending along parallel planes, respectively, the first heat dissipating fins coupled to one another through a first heat conductive member, and a second heat dissipating fin member including second heat dissipating fins extending along parallel planes, respectively, the second heat dissipating fins coupled to one another through a second heat conductive member, the tip ends of the second heat dissipating fins opposed to the first heat dissipating fin member at a predetermined interval.
    Type: Application
    Filed: January 2, 2009
    Publication date: May 7, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Jie Wei, Keizou Takemura
  • Publication number: 20090113260
    Abstract: A test system for testing a plurality of devices under test is disclosed. The test system includes a tester and a plurality of processors. The tester is used for providing a plurality of control signals and determining a plurality of test results for the devices under test according to a plurality of measurement results. Each processor coupled to the tester is used for generating a plurality of test signals according to the plurality of control signals. The plurality of devices under test respectively generates the plurality of test results according to the plurality of test signals.
    Type: Application
    Filed: October 29, 2008
    Publication date: April 30, 2009
    Inventors: Cheng-Yung TENG, Yi-Chang HSU, Jie-Wei HUANG
  • Publication number: 20080243409
    Abstract: The invention discloses a circuit testing apparatus for testing a device under test. The circuit testing apparatus includes a precision measurement unit, a signal transformation module, and a microprocessor. The precision measurement unit is coupled to the device under test for providing a testing signal and receiving a measurement signal generated according to the testing signal. The signal transformation module is coupled to the precision measurement unit for receiving the measurement signal and transforming the measurement signal to a signal measurement result according to a predetermined manner. The microprocessor is coupled to the precision measurement unit and the signal transformation module for examining the signal measurement result to determine a test result for the device under test.
    Type: Application
    Filed: May 31, 2007
    Publication date: October 2, 2008
    Inventors: Cheng-Yung Teng, Li-Jieu Hsu, Jie-Wei Huang, Huei-Huang Chen
  • Publication number: 20080055597
    Abstract: A method for characterizing line width roughness of printed features is provided. A wafer having thereon a plurality of gratings formed within a test key region is prepared. The wafer is transferred to a spectroscopic ellipsometry tool having a light source, a detector and a computer. A polarized light beam emanated from the light source is directed onto the gratings. Spectrum data of reflected light is measured and recorded. The spectrum data is compared to a library linked to the computer in real time. The library contains a plurality of contact-hole model based spectra created by incorporating parameter values that describes the line width roughness. The spectrum data is matched with the contact-hole model based spectra, thereby determining the parameter values.
    Type: Application
    Filed: August 29, 2006
    Publication date: March 6, 2008
    Inventors: Jie-Wei Sun, Wen-Kai Hung, Benjamin Szu-Min Lin
  • Patent number: 7297222
    Abstract: A method and device allows dynamic mask welding with online position adjustment in the high-speed welding of structured and endless plastic films. By a transparent driven mask roller provided with masks being arranged in a passive pressure roller surrounding the mask roller, detection can take place optically, and the mask roller and consequently the mask are synchronized with the film speed. Adjustment is detached from a film transport mechanism and does not influence the welding process and in this case, above all, the speed. High film transport speeds in the range of up to 1000 mm per second can be employed.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: November 20, 2007
    Assignee: Leister Process Technologies
    Inventor: Jie-Wei Chen
  • Patent number: 7285744
    Abstract: A method and apparatus for simultaneously heating materials, in particular for welding plastic components, having an arbitrary shape of a flat heating contour by laser radiation is provided. The apparatus has, an appropriate optical arrangement that is used to convert a laser beam into an annular laser beam and focus it onto the end wall of a light-guiding tube and couple it in. At an exit end, the tube is deformed in accordance with the desired heating contour such that the emerging laser beam has this heating contour.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: October 23, 2007
    Assignee: Leister Process Technologies
    Inventor: Jie-Wei Chen
  • Patent number: 7282665
    Abstract: A method for joining workpieces by welding with laser light, in which a plurality of workpieces are arranged between a lower pressure plate and a translucent upper pressure plate on a multiplicity of supporting segments movable in a vertical direction, whereby the workpieces are subsequently exposed through the upper pressure plate to a laser beam. The workpieces on the supporting are pressed together and towards the upper plate with a prescribed contact pressure, the spacing of the supporting segments from the upper pressure plate being set variably and independently from each other. A device for joining workpieces by welding with laser light, comprises at least one upper pressure plate of transparent material and a lower pressure plate with multiplicity supporting segments for the workpieces. The supporting segments are arranged side by side on the lower plate and are movable in a vertical direction by compressed air and can be set independently from each other.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: October 16, 2007
    Assignee: Leister Process Technologies
    Inventors: Jie-Wei Chen, Adolf Niederberger
  • Patent number: 7223315
    Abstract: Method and apparatus for heating plastic by laser beams with the aid of a number of laser points on the focal plane, the laser points being produced by an optical arrangement with the aid of a multiple wedge plate. The arrangement can be integrated in a processing head.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: May 29, 2007
    Assignee: Leister Process Technologies
    Inventor: Jie Wei Chen