Patents by Inventor Wei Wen Feng
Wei Wen Feng 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: 11195318Abstract: A non-transitory, tangible, computer-readable storage medium may contain a program of instructions that cause a computer system running the program of instructions to automatically generate a 3D avatar of a living being, including automatically: causing one or more sensors to generate 3D data indicative of the three dimensional shape and appearance of at least a portion of the living being; and generating a virtual character based on the 3D data that can be animated and controlled.Type: GrantFiled: April 23, 2015Date of Patent: December 7, 2021Assignee: UNIVERSITY OF SOUTHERN CALIFORNIAInventors: Evan Suma, Gerard Medioni, Mark Bolas, Ari Y. Shapiro, Wei-Wen Feng, Ruizhe Wang
-
Publication number: 20150356767Abstract: A non-transitory, tangible, computer-readable storage medium may contain a program of instructions that cause a computer system running the program of instructions to automatically generate a 3D avatar of a living being, including automatically: causing one or more sensors to generate 3D data indicative of the three dimensional shape and appearance of at least a portion of the living being; and generating a virtual character based on the 3D data that can be animated and controlled.Type: ApplicationFiled: April 23, 2015Publication date: December 10, 2015Applicant: UNIVERSITY OF SOUTHERN CALIFORNIAInventors: Evan Suma, Gerard Medioni, Mark Bolas, Ari Y. Shapiro, Wei-Wen Feng, Ruizhe Wang
-
Patent number: 7990118Abstract: An exemplary switching regulator, is provided. The switching regulator includes an oscillator, a PWM logic controller, an inductor, a capacitor, a switch, a driver, a current sense amplifier, and a minimum power pulse width generator. The current sense amplifier and the minimum power pulse width generator compose a first feedback loop for generating a first feedback signal to the PWM logic controller.Type: GrantFiled: August 14, 2008Date of Patent: August 2, 2011Assignee: Fitipower Integrated Technology, Inc.Inventors: Wei-Wen Feng, Wen-Yen Lee
-
Patent number: 7746676Abstract: A charge pump includes a first capacitor, a first switch with adjustable on-state resistance, a second switch, a third switch, a fourth switch, a feedback loop, and an oscillator. The first switch is coupled between a first electrode of the first capacitor and an output node. The second switch is coupled between a second electrode of the capacitor and ground. The third switch is coupled between an input node and the second electrode of the capacitor. The fourth switch with adjustable on-state resistance is coupled between the input node and the first electrode of the capacitor. The feedback loop monitors a regulated voltage of the output node and generates a control signal to regulate resistances of the first, fourth switches. The oscillator generates a first and second pulse signals to switch the open and close states of the first, third switches and the second, fourth switches, respectively.Type: GrantFiled: November 1, 2007Date of Patent: June 29, 2010Assignee: Fitipower Integrated Technology, Inc.Inventors: Wei-Wen Feng, Wen-Yen Lee
-
Publication number: 20090195541Abstract: The present embodiments provide a system for graphically rendering an object. This system operates first by pre-processing a geometry mesh for the object offline, wherein the geometry mesh is partitioned into a set of patches, and wherein each patch is bounded by a bounding box. The system then builds a multi-resolution representation for each of the set of patches. Next, during real time rendering, the system deforms the bounding boxes associated with the set of patches through superposition of object motions in each frame weighted by a set of predetermined mesh-skinning parameters. For each deformed bounding box, the system computes a geometry level-of-detail (LOD) value based on a projected area of the deformed bounding box in screen space. The system next deforms the object through a set of mesh skinning operations. The system then renders the deformed object based on the computed geometry LOD values for the set of patches and the multi-resolution representation for the geometry mesh.Type: ApplicationFiled: January 29, 2009Publication date: August 6, 2009Applicant: RAMBUS INC.Inventors: Liang Peng, Yixhou Yu, Wei-Wen Feng
-
Publication number: 20090045791Abstract: An exemplary switching regulator, is provided. The switching regulator includes an oscillator, a PWM logic controller, an inductor, a capacitor, a switch, a driver, a current sense amplifier, and a minimum power pulse width generator. The current sense amplifier and the minimum power pulse width generator compose a first feedback loop for generating a first feedback signal to the PWM logic controller.Type: ApplicationFiled: August 14, 2008Publication date: February 19, 2009Applicant: FITIPOWER INTEGRATED TECHNOLOGY, INC.Inventors: WEI-WEN FENG, WEN-YEN LEE
-
Publication number: 20080157734Abstract: A charge pump for converting a voltage at an input node into a regulated voltage and outputting the regulated voltage at an output node, includes: a first capacitor; a first switch with adjustable on-state resistance coupled between a first electrode of the first capacitor and the output node; a second switch coupled between a second electrode of the capacitor and ground; a third switch coupled between the input node and the second electrode of the capacitor; a fourth switch with adjustable on-state resistance coupled between the input node and the first electrode of the capacitor; a feedback loop for monitoring the regulated voltage of the output node and generating a control signal to regulate resistances of the first, fourth switches; an oscillator for generating a first and second pulse signals to switch the open/close states of the first, third switches and the second, fourth switches, respectively.Type: ApplicationFiled: November 1, 2007Publication date: July 3, 2008Applicant: Fitipower Integrated Technology, Inc.Inventors: WEI-WEN FENG, WEN-YEN LEE
-
Patent number: 7075282Abstract: The first proposed circuit includes: a voltage supply; a first current source, including: a first transistor having a first terminal coupled to the voltage supply, a second terminal providing the PTAT current and coupled to an output terminal of the circuit for providing a bandgap reference voltage, and a control terminal; a second current source, including: a first resistor having a first terminal coupled to the voltage supply; and a second transistor having a first terminal coupled to a second terminal of the first resistor, a second terminal providing the PTVBE current and coupled to the output terminal, and a control terminal; and a second resistor having a first terminal coupled to the output terminal, and a second terminal coupled to a common ground. Two current mirror circuits are employed in this circuit.Type: GrantFiled: May 24, 2004Date of Patent: July 11, 2006Assignee: Analog Integrations CorporationInventor: Wei Wen Feng
-
Publication number: 20060006855Abstract: A DC/DC voltage converter includes a charge pump circuit including a pump capacitor coupling at an output node, a switching device for switching the charge pump circuit between a first phase and a second phase, and an adjustable resistor for adjusting a magnitude of the output voltage at the second phase, wherein at the first phase, a current flows to charge the pump capacitor, and at the second phase, said current flows from the pump capacitor to the output node. A feedback loop circuitry is electrically coupling with the charge pump circuit for generating a control signal to the adjustable resistor to control the output voltage at the output node in a constant manner when said current is increased. Therefore, the voltage converter is adapted to perform good load regulation ability to prevent variations and fluctuations in the output voltage corresponding to load variations and fluctuations.Type: ApplicationFiled: July 8, 2004Publication date: January 12, 2006Inventors: Wei-Wen Feng, Jian-He Li
-
Patent number: 6982527Abstract: A method for driving a light emitting diode coupled to an output of a current mirror is provided. The method includes providing a control terminal voltage of the current mirror as a reference voltage, increasing a voltage of an input of the current mirror and providing an input of the light emitting diode as a voltage feedback point for keeping a constant voltage difference between the input and the output of the current mirror, and driving the light emitting diode by a voltage at the output of the current mirror.Type: GrantFiled: May 12, 2004Date of Patent: January 3, 2006Assignee: Analog Integrations CorporationInventors: Albert Minru Lee, Wei Wen Feng
-
Publication number: 20040239303Abstract: The first proposed circuit includes: a voltage supply; a first current source, including: a first transistor having a first terminal coupled to the voltage supply, a second terminal providing the PTAT current and coupled to an output terminal of the circuit for providing a bandgap reference voltage, and a control terminal; a second current source, including: a first resistor having a first terminal coupled to the voltage supply; and a second transistor having a first terminal coupled to a second terminal of the first resistor, a second terminal providing the PTVBE current and coupled to the output terminal, and a control terminal; and a second resistor having a first terminal coupled to the output terminal, and a second terminal coupled to a common ground. Two current mirror circuits are employed in this circuit.Type: ApplicationFiled: May 24, 2004Publication date: December 2, 2004Applicant: ANALOG INTEGRATIONS CORPORATIONInventor: Wei Wen Feng