Patents Represented by Attorney, Agent or Law Firm Tung & Associates
  • Patent number: 8151916
    Abstract: An energy management system includes a first energy source having a first well-to-wheels greenhouse gas emissions content, a second energy source having a second well-to-wheels greenhouse gas emissions content and a drive mechanism powered by the first energy source and the second energy source. The drive mechanism is powered by the first energy source when the first well-to-wheels greenhouse gas emissions content is less than the second well-to-wheels greenhouse gas emissions content and the drive mechanism is powered by the second energy source when the second well-to-wheels greenhouse gas emissions content is less than the first well-to-wheels greenhouse gas emissions content.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: April 10, 2012
    Assignee: Ford Global Technologies, LLC
    Inventor: Chris Conway Gearhart
  • Patent number: 8155255
    Abstract: A displacement estimation method is disclosed which includes: a signal capturing step for capturing a signal; a displacement estimation step for calculating a displacement based on a state change of the signal; and an output step for outputting the displacement, in which the displacement estimation step includes one or more of the steps of (A) consistency check to determine whether the state change of the signal is consistent with the waveform of the signal; (B) period prediction and compensation to count in the present period according to a proportional length of a previous period; and (C) adaptive threshold update to adjust the definition of the state change corresponding to the amplitude of the signal.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: April 10, 2012
    Assignee: Pixart Imaging Corporation
    Inventors: Hsin Chia Chen, Tzu Yi Chao, Chun Huang Lin, Jeng Feng Lan, Yi Fang Lee
  • Patent number: 8153471
    Abstract: A phase change memory structure and method for forming the same, the method including providing a substrate comprising a conductive area; forming a spacer having a partially exposed sidewall region at an upper portion of the spacer defining a phase change memory element contact area; and, wherein the spacer bottom portion partially overlaps the conductive area. Both these two methods can reduce active area of a phase change memory element, therefore, reducing a required phase changing electrical current.
    Type: Grant
    Filed: November 14, 2010
    Date of Patent: April 10, 2012
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd
    Inventors: Li-Shyue Lai, Chao-Hsiung Wang, Denny Tang, Wen-Chin Lin
  • Patent number: 8143130
    Abstract: The present invention discloses a method of manufacturing a depletion metal oxide semiconductor (MOS) device. The method includes: providing a substrate; forming a first conductive type well and an isolation region in the substrate to define a device area; defining a drift region, a source, a drain, and a threshold voltage adjustment region, and implanting second conductive type impurities to form the drift region, the source, the drain, and the threshold voltage adjustment region, respectively; defining a breakdown protection region between the drain and the threshold voltage adjustment region, and implanting first conductive type impurities to form the breakdown protection region; and forming a gate in the device area; wherein a part of the breakdown protection region is below the gate, and the breakdown protection region covers an edge of the threshold voltage adjustment region.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: March 27, 2012
    Assignee: Richtek Technology Corporation, R.O.C.
    Inventor: Tsung-Yi Huang
  • Patent number: 8140726
    Abstract: The present invention discloses a single wire transmission interface comprising: a signal detection circuit detecting level switchings of a transmission signal from a single wire, and generating an enable signal and a decoded signal corresponding to the transmission signal, the level switchings including first switchings from a first level to a second level and second switchings from the second level to the first level, wherein the enable signal starts according to one first switching of the transmission signal, and stops when no first switching occur in a predetermined period after one second switching of the transmission signal, and wherein rising edges (or falling edges) of the decoded signal correspond to the first switchings of the transmission signal; a counter, under enablement by the enable signal, counting a number of the rising edges (or the rising edges) of the decoded signal or the first switchings of the transmission signal, and generating a count; a single short pulse generator generating a shor
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: March 20, 2012
    Assignee: Richtek Technology Corporation, R.O.C.
    Inventors: Nien-Hui Kung, Kwan-Jen Chu
  • Patent number: 8134353
    Abstract: The present invention discloses a multi-phase power converter, and a control circuit and a control method of the multi-phase power converter. The multi-phase power converter comprises multiple power conversion phases. The method comprises: determining whether to enter a phase-shedding mode; at a first time when entering the phase-shedding mode, disabling at least one of the power conversion phases; and at another time when entering the phase-shedding mode, disabling at least another one of the power conversion phases.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: March 13, 2012
    Assignee: Richtek Technology Corporation, R.O.C.
    Inventors: Ching-Jan Chen, Chun-Shih Huang, Kuo-Lung Tseng, Dan Chen
  • Patent number: 8125101
    Abstract: A digitally encoded vehicle lamp switch system provided that supplies signals for controlling the lighting functions of a vehicle. The lamp switch system includes a multi-position switch circuit having a plurality of contacts. The multi-position switch contacts selectively connect a plurality of circuit connections of a vehicle lamp control module microprocessor to ground or open circuit conditions to provide digitally encoded signals to the microprocessor to selectively illuminate the vehicle lamps.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: February 28, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: David J. Jaworski, Mark Christian Aaron, William E. Crafts
  • Patent number: 8125204
    Abstract: The present invention discloses a power supply comprising: a switching regulator circuit converting an input voltage to an intermediate voltage; a low dropout linear regulator circuit converting the intermediate voltage to an output voltage so as to supply a load current to a load; and a feedback control circuit which increases the noise filtering effect of the low dropout linear regulator circuit when the load current increases.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: February 28, 2012
    Assignee: Richtek Technology Corporation
    Inventors: Jing-Meng Liu, Chung-Lung Pai, Wei-Che Chiu
  • Patent number: 8120348
    Abstract: The present invention discloses a power converter with improved line transient, comprising: a power stage circuit including at least one power transistor switch which operates to convert an input voltage to an output voltage; an error amplifier comparing a feedback signal with a reference signal to generate an error signal; an input voltage instant variation extraction circuit extracting an instant variation of the input voltage and generating a signal relating to the instant variation; and a PWM comparator generating a PWM signal according to at least a ramp signal, the error signal, and the signal relating to the instant variation, to thereby control the operation of the power transistor switch in the power stage circuit.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: February 21, 2012
    Assignee: Richtek Technology Corporation
    Inventors: Chueh-Kuei Jan, Shui-Mu Lin
  • Patent number: 8117919
    Abstract: The present invention discloses a micro-electro-mechanical system (MEMS) device, comprising: a substrate with at least one opening; and a membrane supported on the substrate, the membrane including at least two thin segments and a thick segment connected together, wherein the two thin segments are not at the same level, and the thick segment is formed by a plurality of layers including at least two metal layers and a via layer, such that the membrane has a curve cross section.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: February 21, 2012
    Assignee: Pixart Imaging Incorporation, R.O.C.
    Inventors: Chuan Wei Wang, Sheng Ta Lee
  • Patent number: 8115263
    Abstract: Within a method for forming a silicon layer, there is employed at least one sub-layer formed of a higher crystalline silicon material and at least one sub-layer formed of a lower crystalline silicon material. The lower crystalline silicon material is formed employing a hydrogen treatment of the higher crystalline silicon material. The method is particularly useful for forming polysilicon based gate electrodes with enhanced dimensional control and enhanced performance.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: February 14, 2012
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chia-Lin Chen, Liang-Gi Yao, Shih-Chang Chen
  • Patent number: 8114725
    Abstract: The present invention discloses a method of manufacturing MOS device having a lightly doped drain (LDD) structure. The method includes: providing a first conductive type substrate; forming an isolation region in the substrate to define a device area; forming a gate structure in the device area, the gate structure having a dielectric layer, a stack layer, and a spacer layer on the sidewalls of the stack layer; implanting second conductive type impurities into the substrate with a tilt angle to form an LDD structure, wherein at least some of the impurities are implanted into the substrate through the spacer to form part of the LDD structure below the spacer layer; and implanting second conductive type impurities into the substrate to form source and drain.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: February 14, 2012
    Assignee: Richtek Technology Corporation
    Inventors: Tsung-Yi Huang, Ching-Yao Yang
  • Patent number: 8111256
    Abstract: A method of altering a computer generated mesh model of a design feature by a computer user to improve a feature design process is provided including providing a mesh model; forming a plane; defining an alteration area of the plane; forming a 2D mesh on the plane including a plurality of mesh nodes independent of the mesh model nodes within the alteration area; defining a partial differential equation to be numerically solved using the 2D mesh; numerically solving the partial differential equation using said 2D mesh to obtain solved 2D mesh node values; using the solved 2D mesh node values to obtain new values for each mesh model node including the portion of the mesh model to be altered; and, graphically regenerating the design feature using the mesh model nodes including the new values to form an altered portion of the mesh model.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: February 7, 2012
    Assignee: Ford Motor Company
    Inventors: Yifan Chen, Basavaraj Tonshal
  • Patent number: 8106531
    Abstract: The present invention discloses a multi-output switching regulator, comprising: a single-input-multiple-output voltage converter converting an input voltage to a first output voltage at a first node and a second output voltage at a second node; an input capacitor connected with the input voltage at an input node; a first output capacitor having two ends, one of which is connected with the first node; and a second output capacitor having two ends, one of which is connected with the second node; wherein the other end of the first output capacitor is connected to ground, the input node or the second node, and the other end of the second output capacitor is connected to ground, the input node or the first node.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: January 31, 2012
    Assignee: Richtek Technology Corporation
    Inventors: Ching-Jung Tseng, Jui-Li Lan, Jing-Meng Liu
  • Patent number: 8105724
    Abstract: The level of electrical current produced by a fuel cell during rapid changes in the power demanded by a load, is clamped to the fuel cell's maximum rated current value in order to avoid damage to the fuel cell. When the current supplied to the load by the fuel cell overshoots the maximum rated current value, the fuel cell current is immediately reduced by increasing the fuel cell voltage.
    Type: Grant
    Filed: January 28, 2006
    Date of Patent: January 31, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Jack Xu, Ramakrishna Raju, Matt DeDona, Raymond Spiteri
  • Patent number: 8101340
    Abstract: A method of inhibiting photoresist pattern collapse which includes the steps of providing a substrate; providing a photoresist layer on the substrate; exposing and developing the photoresist layer; applying a top anti-reflective coating layer to the photoresist layer; rinsing the photoresist layer; and drying the photoresist layer.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: January 24, 2012
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Ching-Yu Chang, Heng-Jen Lee, Chin-Hsiang Lin, Hua-Tai Lin, Kuei Shun Chen, Bang-Chein Ho, Li-Kong Turn, Hung-Jui Kuo, Ko-Bin Kao, Tsung-Chih Chien
  • Patent number: 8099861
    Abstract: A current-leveling electrode for improving electroplating and electrochemical polishing uniformity in the electrochemical plating or electropolishing of metals on a substrate is disclosed. The current-leveling electrode includes a base electrode and at least one sub-electrode carried by the base electrode. The at least one sub-electrode has a width which is less than a width of the base electrode to impart a generally tapered, stepped or convex configuration to the current-leveling electrode.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: January 24, 2012
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Shih-Chieh Chang, Ying-Lang Wang, Kei-Wei Chen, Shih-Ho Lin, Chun-Chang Chen
  • Patent number: 8097106
    Abstract: A ceramic matrix composite structure has a reinforced core for carrying loads. The core includes a web connected between the facesheets by edge bonded joints for transmitting compressive, tensile and shear loads. The edge bonded joints are laterally reinforced by bridging members bonded to the facesheets, on opposite sides of the webs The bridging members may comprise low density, high temperature rigid foam.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: January 17, 2012
    Assignee: The Boeing Company
    Inventors: Michael L. Hand, Leanne L. Lehman, Miklos P. Petervary
  • Patent number: 8096038
    Abstract: An end effector for use on a robotic arm includes a clamping assembly for clamping a workpiece, and a tool such as a drill for performing an operation on the clamped workpiece. The clamping assembly is slidably mounted on the robotic arm and self adjusts its position relative to the workpiece before a clamping operation is performed. Linear actuators independently control the movements of the clamping members. The actuators are operated by a controller, based in part on position information produced by sensors that sense the position of the clamping members.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: January 17, 2012
    Assignee: The Boeing Company
    Inventor: Christopher D. Condliff
  • Patent number: 8093845
    Abstract: The present invention discloses a 3-phase brushless DC motor controller, which comprises: a unit for generating a PWM signal; an ADC for converting a back electromotive force (BEMF) signal from an analog form into a digital form; a synchronization and extraction unit operating in synchronization in part with the PWM signal for extracting the digital BEMF signal to obtain a corresponding ZCP signal; and a unit for judging whether a commutation operation is to be performed according to a change of the corresponding ZCP signal. A wait instruction and a delay instruction help to accurately acquire the digital BEMF signal.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: January 10, 2012
    Assignee: Padauk Technology Co., Ltd.
    Inventor: Mao-Hsin Cheng