Patents Represented by Attorney Ella Cheong Hong Kong
  • Patent number: 8338237
    Abstract: The invention provides a method for forming thin film transistors including a polycrystalline semiconducting film. The method comprises depositing a first layer of amorphous semiconducting thin film on to a substrate; depositing a second layer of thin film on to the first layer of amorphous semiconducting thin film; patterning the second layer of thin film so that the first layer of amorphous semiconducting thin film is exposed at selected locations; exposing the first and second layers of thin film to a nickel containing compound in either a solution or a vapor phase ; removing the second layer of thin film; and annealing the first layer of amorphous semiconducting thin film at an elevated temperature so the first layer of amorphous semiconducting thin film converts into a polycrystalline semiconducting thin film.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: December 25, 2012
    Assignee: Hong Kong University of Science and Technology
    Inventors: Hoi Sing Kwok, Man Wong, Zhiguo Meng, Shuyun Zhao, Chunya Wu
  • Patent number: 8329485
    Abstract: The present invention provides an ink jet printable phosphor ink composition for LED packaging that enables precision control of the amount and position of phosphor layers on the LED device or the LED device packaging. The ink includes both a UV-curable resin component and a thermally curable resin component. A phase-separation component prevents phase separation of the UV-curable resin component and the thermally curable resin component. Phosphor particles on the order of less than approximately 2 microns are uniformly dispersed throughout the ink composition. The phosphor ink composition is deposited through either thermal or piezoelectric ink jet printing; a thin layer is deposited in a desired pattern. UV curing (and, optionally, thermal curing) is used to fix each layer followed by subsequent deposition and curing. In this manner, undesirable phosphor settling does not occur and layers are selectively built up to form precise phosphor distributions.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: December 11, 2012
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventor: Dennis McKean
  • Patent number: 8315185
    Abstract: The present invention relates to ACK-NACK detection in an LTE wireless communication system. To determine a threshold value for an ACK-NACK transmission, an SC-FDMA signal is received from user equipment. Then, a power estimate of soft data bits is used to establish a threshold value for determining the presence of an ACK-NACK signal. Using this threshold value, a signal from the user equipment is analyzed to determine if it contains an ACK or NACK transmission.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: November 20, 2012
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventor: Wing Chau Chan
  • Patent number: 8261971
    Abstract: An electronic label system is provided which includes a data source having information to be displayed by an electronic label. An optical source such as an LED array broadcasts optical signals modulated with the data source data to plural electronic labels. Each electronic label has an optical receiver which receives the modulated optical signals and also receives unmodulated optical signals to supply power to an energy storage device. A mode switch switches the optical receiver between a signal reception mode and an energy storage device power-supplying mode. One or more bistable displays display the data received from the modulated optical signals. Through the use of bistable displays, the power consumption of the electronic label is greatly reduced while use of a single receiving element for receiving both the signal light and power storage light reduces the number of components needed to assemble the electronic label, thus reducing cost.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: September 11, 2012
    Assignees: Hong Kong Applied Science and Technology Research, Institute Company Limited
    Inventors: Wai Hung, Ming Lu
  • Patent number: 8259819
    Abstract: The present invention relates to method and apparatus for improving video quality. The present invention provides a unified loop filter including: a pixel determining unit which determines the type of a pixel based on boundary strength; a similarity transforming unit which transforms a nonlinear filter into a nonlinear similarity-ordered statistics filter; and an integrating unit which integrates the nonlinear similarity-ordered statistics filter with a linear image filtering portion. The unified loop filter is applicable to filter reconstructed frames when an encoder or a decoder is processing a video signal.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: September 4, 2012
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Yu Liu, Yan Huo, Ka Man Cheng
  • Patent number: 8247254
    Abstract: System and method for forming solar cell structures using a foundry compatible process. According to an embodiment, the present invention provides a method for manufacturing a solar cell. The method includes providing a substrate. The substrate includes a support region. The method also includes transferring a photovoltaic material overlying the support region of the substrate. The photovoltaic material is characterized by a first thickness. The method further includes forming an emitter region on the photovoltaic material by a diffusion process. The emitter region is characterized by a first impurity type. In addition, the method includes forming a mask overlaying the emitter region. The mask exposes at least a first contact region. The method also includes forming the first contact region within the first thickness of the photovoltaic material. Furthermore, the method includes doping the first contact region with a second impurity type.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: August 21, 2012
    Assignee: Silicon China (HK) Ltd.
    Inventor: Chung Chan
  • Patent number: 8228983
    Abstract: The invention is used in video coding. Systems, apparatuses and methods for processing an order-16 integer transform from an order-8 transform are provided. The order-16 transform method involves expanding an order-8 transform by generating an order-16 integer matrix and a scaling matrix.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: July 24, 2012
    Assignees: Hong Kong Applied Science and Technology Research, Institute Company Limited
    Inventors: Wai-Kuen Cham, Chi Keung Fong, Jie Dong, King Ngi Ngan, Hoi Ming Wong, Lu Wang, Yan Huo, Thomas H. Y. Pun
  • Patent number: 8222064
    Abstract: A method of fabricating a compound semiconductor vertical LED is provided. A first growth substrate capable of supporting compound semiconductor epitaxial growth thereon is provided. One or more epitaxial layers of compound semiconductor material such as GaN or InGaN is formed on the first growth substrate to create a portion of a vertical light emitting diode. Plural trenches are formed in the compound semiconductor material. Passivating material is deposited in one or more trenches. A hard material is at least partially deposited in the trenches and optionally on portions of the compound semiconductor material. The hard material has a hardness greater than the hardness of the compound semiconductor. A metal layer is deposited over the compound semiconductor material followed by metal planarization. A new host substrate is bonded to the metal layer and the first growth substrate is removed. Dicing is used to form individual LED devices.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: July 17, 2012
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Limin Lin, Xiangfeng Shao
  • Patent number: 8222025
    Abstract: The present invention relates to a multistory system for using waste carbon dioxide and waste heat to facilitate cultivation of photosynthetic organisms. In particular, the present invention relates to a multistory system with the incorporation of upconverting and downconverting luminescent materials and other components suitable for enhancing growth of photosynthetic organisms.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: July 17, 2012
    Inventor: Lan Wong
  • Patent number: 8212297
    Abstract: High optical efficiency CMOS image sensors capable of sustaining pixel sizes less than 1.2 microns are provided. Due to high photodiode fill factors and efficient optical isolation, microlenses are unnecessary. Each sensor includes plural imaging pixels having a photodiode structure on a semiconductor substrate adjacent a light-incident upper surface of the image sensor. An optical isolation grid surrounds each photodiode structure and defines the pixel boundary. The optical isolation grid extends to a depth of at least the thickness of the photodiode structure and prevents incident light from penetrating through the incident pixel to an adjacent pixel. A positive diffusion plug vertically extends through a portion of the photodiode structure. A negative diffusion plug vertically extends into the semiconductor substrate for transferring charge generated in the photodiode to a charge collecting region within the semiconductor substrate.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: July 3, 2012
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Pui Chung Simon Law, Dan Yang, Xunqing Shi
  • Patent number: 8205174
    Abstract: An integrated circuit modeling method 100 implementable on computer, which has an executable software model 145 having modules 140 of reusable functional cores 105 coded in a high level language and a virtual platform of the integrated circuit employable in an architecture exploration step 115. A modeling library of modules coded in high level languages and hardware level languages are provided and instantiated according to user input in a functional verification step 120 having a co-simulation environment, with interface code 170 between modules automatically generated by an interface generator 130 based on a two dimensional data array of hardware specification inputs 205, the interface code 170 further interfacing with wrappers engaged between high and hardware level language modules.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: June 19, 2012
    Assignees: Hong Kong Applied Science and Technology Research, Institute Company Limited
    Inventors: Suet Fei Li, Yunzhao Lu, Erik Olsson, Ming Hua Shi
  • Patent number: 8187900
    Abstract: The present invention provides a method of fabricating vertical LED structures in which the substrate used for epitaxial layer growth is removed through polishing. The polishing technique used in an exemplary embodiment is chemical mechanical polishing using polish stops to provide a sufficiently level plane. Polish stops are provided in the multilayer structure before polishing the surface, the hardness of the polish stop material being greater than the hardness of the material that needs to be removed. Consequently, vertical LEDs can be produced at a lower cost and higher yield compared to either laser lift-off or conventional polishing. Exemplary vertical LEDs are GaN LEDs. The polish stops may be removed by saw dicing, laser dicing or plasma etching.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: May 29, 2012
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Li Min Lin, Ka Wah Chan, Sheng Mei Zheng, Yong Cai
  • Patent number: 8186209
    Abstract: A valve for a tire pressure monitoring system in which the valve acts a coaxial conductor to transmit a signal to a receiver presented. A valve stem electrically isolated from a valve pin form the coaxial conductor. In a tire pressure monitoring system, a tire pressure measurement module is positioned inside a tire. In one embodiment, a conductive radiating structure is electrically connected or coupled to the valve pin to receive the tire pressure information signal and transmit it to a receiver. The above configuration further permits a rechargeable battery in the tire pressure measurement module to be recharged via the tire valve. The valve pin and valve stem, being electrically isolated from one another, are used as recharging paths for the battery.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: May 29, 2012
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Ruonan Wang, Chi Ho Cheng, Yu Lou, Lydia Lap Wai Leung, Ivan Man Lung Sham, Tung Ching Lui
  • Patent number: 8170110
    Abstract: In accordance with an example embodiment of the present invention, the present invention provides method and apparatus for motion compensated prediction. Apart from translational motion, zoom motion is taken into account by sampling an interpolated frame with one or more selected sampling rates to generate one or more zoom reference frames; matching a frame with the zoom reference frames; and determining one or more motion data.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: May 1, 2012
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Lai-Man Po, Ka Man Wong, Kwok Wai Cheung, Ka Ho Ng, Yu Liu
  • Patent number: 8165211
    Abstract: The presently claimed invention adaptively selects a local de-interlacing method according to information from a compressed video bitstream. According to one embodiment, successive images from a video bitstream are first reconstructed. Syntax elements, selected from a macroblock type, a macroblock partition, a motion vector, a distance from a reference frame, the existence of non-zero transform coefficients and the distribution of transform coefficients, are then extracted from this bitstream. Based on the syntax elements, a de-interlacing algorithm is decided from an algorithm set for each image region in a video frame. Algorithms in the algorithm set include motion compensation, edge-based line averaging, and line averaging. Each image region is thereby interpolated using the de-interlacing algorithm and complementary motion compensation. The complementary motion compensation de-interlaces the image region using an inverse of motion vectors extracted from a bitstream clip representing neighboring frames.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: April 24, 2012
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: King Ngi Ngan, Jie Dong, Yan Huo
  • Patent number: 8165553
    Abstract: A circuit is provided for suppression of second-order intermodulation in a double-balanced mixer circuit. The circuit includes a duplicate transconductor element for duplicating AC current in a transconductor pair of the double-balanced mixer circuit. A fundamental cancellation element cancels a fundamental component of an AC current of the duplicate transconductor element, while preserving a second-order intermodulation component. A phase inversion element feeds an output current of the fundamental cancellation element to the transconductor pair of the double-balanced mixer circuit, to substantially remove the second-order intermodulation component from a differential output of the double-balanced mixer circuit.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: April 24, 2012
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Shuzuo Lou, Weimin Zhang, Wai Po Wong, Gang Qian
  • Patent number: 8148629
    Abstract: A photovoltaic device and related methods of manufacture. The device has a support substrate having a support surface region. The device has a thickness of crystalline material characterized by a plurality of worm hole structures therein overlying the support surface region of the support substrate. The worm hole structures are characterized by a density distribution. The one or more worm hole structures have respective surface regions. In a specific embodiment, the thickness of crystalline material has an upper surface region. The device has a passivation material overlying the surface regions to cause a reduction of a electron-hole recombination process. A glue layer is provided between the support surface region and the thickness of crystalline material. A textured surface region formed overlying from the upper surface region of the thickness of crystalline material.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: April 3, 2012
    Assignee: Silicon China (HK) Limited
    Inventors: Yick Chuen Chan, Nathan W. Cheung, Chung Chan
  • Patent number: 8130134
    Abstract: The claimed invention relates to an interactive television system including a controller for converting the hand motion of the user into acceleration data of three axes by a single 3-axis accelerometer 113 and an interactive system for mapping the output of the acceleration data with the pre-defined data in a motion database thereof so that the user can remotely control the TV centric devices with a reduced set of instructions. The claimed invention also relates to a method of using a controller incorporated with a single 3-axis accelerometer to control an interactive system for TV centric devices.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: March 6, 2012
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Bojun Meng, Yeaun Jau Liou
  • Patent number: 8111105
    Abstract: An amplifier circuit comprising: a MOSFET amplifier circuit; a BJT amplifier circuit; a MOSFET switch circuit arranged for switching between the MOSFET amplifier circuit and the BJT amplifier circuit to implement different gain modes of the amplifier circuit.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: February 7, 2012
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventor: Jun Zhou
  • Patent number: 8108652
    Abstract: The claimed invention is an efficient and high-performance vector processor. Through minimizing the use of multiple banks of memory and/or multi-ported memory blocks to reduce implementation cost, vector memory 450 provides abundant memory bandwidth and enables sustained low-delay memory operations for a large number of SIMD (Single Instruction, Multiple Data) or vector operators simultaneously.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: January 31, 2012
    Inventor: Ronald Chi-Chun Hui