Patents Assigned to Applied Science & Technology
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Publication number: 20090052173Abstract: An optical element, a light-emitting component and a direct-lit backlight module having the optical element are provided. The optical element includes a bottom surface, at least one side refractive surface for refracting one part of a light beam incident from the bottom surface, and an upper refractive surface for refracting the other part of the light beam incident from the bottom surface. A maximum included angle formed between the light beam incident from the bottom surface and to be irradiated onto the side refractive surface and the bottom surface is a first angle (?). An included angle formed between a light beam coming out from at least one side refractive surface and the bottom surface is smaller than or equal to the first angle. A maximum included angle formed between the light beam incident from the bottom surface and to be irradiated onto the upper refractive surface and a central axis of the optical element is a second angle (?).Type: ApplicationFiled: August 8, 2008Publication date: February 26, 2009Applicant: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventor: Ying Liu
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Publication number: 20090039383Abstract: A vertical gallium-nitrate-based LED and method of making a vertical gallium-nitrate-based LED using a stop layer is provided. Embodiments of the present invention use mechanical thinning and a plurality of superhard stop points to remove epitaxial layers with a high level of certainty. According one embodiment, the method of making a vertical LED includes forming a plurality of layers on a sapphire substrate, forming a plurality of stop points in the plurality of layers, removing the sapphire substrate and part of a u-GaN layer using mechanical thinning, wherein the mechanical thinning stops at an end of the plurality of stop points, selectively etching the u-GaN layer and exposing at least a part of the highly doped stop layer, and forming an n-electrode on the highly doped stop layer.Type: ApplicationFiled: March 28, 2008Publication date: February 12, 2009Applicant: Hong Kong Applied Science Technology Research InstituteInventors: Hung Shen Chu, Yong Cai
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Patent number: 7482632Abstract: A light emitting diode (LED) assembly includes a first substrate carrying a first plurality of LEDs mounted thereon and a second substrate spaced apart from the first substrate. The second substrate carries a second plurality of LEDs thereon. The first and second substrates are thermally connected for thermal distribution between the substrates.Type: GrantFiled: July 26, 2006Date of Patent: January 27, 2009Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Ming Lu, Kai Chiu Wu, Zhikuan Zhang, Enboa Wu
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Patent number: 7474287Abstract: A light emitting device includes a time delay mechanism in electrical connection with a power source for time shifting at least a portion of a power signal outputted by the power source and a plurality of light emitting units formed by at least a light emitting diode (LED)structure, each light emitting unit being driven alternately and sequentially using the power source and the time delay mechanism.Type: GrantFiled: December 23, 2005Date of Patent: January 6, 2009Assignee: Hong Kong Applied Science and TechnologyInventors: Enboa Wu, Ming Lu, Geoffrey Wan Tai Shuy
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Publication number: 20080294788Abstract: A system for receiving content comprises: a node in a peer-to-peer (P2P) network, the node operable to receive information with regard to available media and to use the information to access streaming media content from a first source peer in the P2P network, the node further operable to use the received information to switch from the first source peer to a second source peer to access the streaming media.Type: ApplicationFiled: May 21, 2007Publication date: November 27, 2008Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Kangheng Kent Wu, Ka Ki Terry To, Tak Wing Andy Lam, Chun Yin Trevor Ng
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Publication number: 20080291153Abstract: An image display device is presented to solve problems of high power consumption, insufficient contrast, image flicker, and distortion of image display devices. The image display device includes an image display management module which includes a backlight control unit. The backlight control unit includes an image brightness analyzer, generating a brightness value according to an input image data; a weight generator, generating a weight according to the brightness value; an image variation analyzer, analyzing the input image data to generate an image variance; and a backlight factor generator, coupled to the weight generator and the image variation analyzer to generate a backlight adjusting signal according to the weight and the image variance. By the backlight adjusting signal, the image display device achieves the power-saving and contrast enhancement effects.Type: ApplicationFiled: May 22, 2008Publication date: November 27, 2008Applicant: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Wei Zhang, Huajun Peng, Chen-Jung Tsai, Chun-Kit Hung
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Publication number: 20080291475Abstract: A method, apparatus and computer program product for correcting white balance in a digital image are described. The method comprises determining a number of grey blocks in the digital image (s102), each block comprising a subset of pixels of the image, and if the number of grey blocks is less than a predetermined value, scaling one or more colour channels of the digital image using a first gain value to generate a first intermediate image (s201A) and scaling one or more colour channels of the digital image using a second gain value to generate a second intermediate image (s201B). A number of grey blocks in each of the first and second intermediate images (s202A, s202B) is determined and the gain value resulting in the intermediate image having a greater number of grey blocks is set as the reference gain value (s203). A grey world process is performed on the intermediate image having a greater number of grey blocks (s205).Type: ApplicationFiled: May 25, 2007Publication date: November 27, 2008Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Hon Wah Wong, Kar Kin Edwin Lee
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Publication number: 20080293803Abstract: The present invention relates to a disposable container for a medicament or cosmetic agent for topical application, containing a single dose of melatonin or of a melatonin derivative which corresponds to a locally effective dose but which does not cause any systemic effect.Type: ApplicationFiled: May 7, 2008Publication date: November 27, 2008Applicant: ASAT AG APPLIED SCIENCE & TECHNOLOGYInventor: Hans W. SCHMID
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Publication number: 20080285298Abstract: A heat exchange device that includes a structural section and a thin layer of material attached to a surface of the structural section. The thin layer of material has a thickness less than 100 microns. The combination of the structural section and the thin layer of material has a higher thermal transfer coefficient than the structural section alone, the thermal transfer coefficient representing an ability to exchange thermal energy with an ambient gas.Type: ApplicationFiled: June 13, 2008Publication date: November 20, 2008Applicant: Hong Kong Applied Science & Technology Research Institute Co. Ltd.Inventor: Geoffrey Wen-Tai Shuy
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Publication number: 20080285329Abstract: A memory device includes a plurality of memory cells each including a recordable layer between two metal layers, the recordable layer including a first sub-cell and a second sub-cell. Each memory cell is constructed and designed to change from an as-deposited state to an initialized state upon application of an initialization signal, from the initialized state to a first inscribed state upon application of a first write signal, and from the initialized state to a second inscribed state upon application of a second write signal. The memory cell has a resistor-like current-voltage (I-V) characteristic when in the as-deposited state, a diode-like I-V characteristic when in the initialized state, and resistor-like I-V characteristics when in the first and second inscribed states for voltages within a predetermined range.Type: ApplicationFiled: September 14, 2007Publication date: November 20, 2008Applicant: Hong Kong Applied Science and Technology Research InstituteInventors: Geoffrey Wen-Tai Shuy, Hsin-Cheng Lai
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Publication number: 20080283403Abstract: A heat exchange device that includes a structural section and a thin layer of material attached to a surface of the structural section. The thin layer of material has a thickness less than 100 microns. The combination of the structural section and the thin layer of material has a higher thermal transfer coefficient than the structural section alone, the thermal transfer coefficient representing an ability to exchange thermal energy with an ambient gas.Type: ApplicationFiled: June 13, 2008Publication date: November 20, 2008Applicant: Hong Kong Applied Science & Technology Research Institute Co. Ltd.Inventor: Geoffrey Wen-Tai Shuy
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Publication number: 20080285337Abstract: A memory device includes memory cells each having a recordable layer between two metal layers, each memory cell being constructed and designed to change from a first state to a second state upon application of an initialization signal, and change from the second state to a third state upon application of a write signal. For a voltage within a specified range that is applied across the two metal layers, the memory cell has a lower resistance in the first state than in the second state, and has a higher resistance in the second state than in the third state.Type: ApplicationFiled: September 14, 2007Publication date: November 20, 2008Applicant: Hong Kong Applied Science and Technology Research InstituteInventors: Geoffrey Wen-Tai Shuy, Hsin-Cheng Lai
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Publication number: 20080286544Abstract: A heat exchange device that includes a structural section and a thin layer of material attached to a surface of the structural section. The thin layer of material has a thickness less than 100 microns. The combination of the structural section and the thin layer of material has a higher thermal transfer coefficient than the structural section alone, the thermal transfer coefficient representing an ability to exchange thermal energy with an ambient gas.Type: ApplicationFiled: June 13, 2008Publication date: November 20, 2008Applicant: Hong Kong Applied Science & Technology Research Institute Co. Ltd.Inventor: Geoffrey Wen-Tai Shuy
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Patent number: 7453844Abstract: Bandwidth is deployed within a wireless network efficiently by making multiple channels available to wireless devices within a coverage area and intelligently controlling access to those channels. For example, channels to which each wireless device is registered with may be based on quality of service factors. According to one embodiment, upon attempted access to a wireless network channel, an access point grants or refuses a wireless device access based on quality of service factors relating to the device, the channel and the other channels that the device could access.Type: GrantFiled: October 22, 2002Date of Patent: November 18, 2008Assignee: Hong Kong Applied Science and Technology Research Institute, Co., Ltd.Inventors: Siu Fai Lee, Yat Tung Cheung
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Publication number: 20080266903Abstract: The present invention provides a multi-block backlight device having light guiding to solve the problems met in the current backlight devices with high cost, difficult matching with the panels, and inefficient lighting area. The multi-block backlight device comprises a plurality of light guiding devices, the light guiding device comprises at least one incident portion, the incident portion comprises at least one light source and an incident area; at least one eave, and a diffusion portion with uniform thickness. The eave can increase effective lighting area of the multi-block backlight device, and the diffusion portion can make the multi-block backlight device easier to couple, therefore achieving cost decreasing and effective usage.Type: ApplicationFiled: April 23, 2008Publication date: October 30, 2008Applicant: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Ying LIU, Danding Huang, Shou Lung Chen
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Patent number: 7443318Abstract: Disclosed is a context modeller (103) used in decoding data (202) encoded using Context Adaptive Binary Arithmetic Coding, said context modeler (103) comprising a Read Only Memory (1001) for storing uninitialized context model values, said uninitialized context model values being stored in the Read Only Memory (1001) in a manner that enables a plurality of uninitialized context model values to be read from the Read Only Memory (1001) in a single clock cycle, an Arithmetic Logic Module (1003) comprising a plurality of parallel processing paths (2202-2207), each said processing path comprising a plurality of pipeline stages, a Random Access Memory (1005) and a memory controller (1008) for determining, using the Arithmetic Logic Module (1005) operating on said plurality of uninitialized context model values read from the Read Only Memory (1001) in each clock cycle, initialized context model values for storage in the Random Access Memory (1001) based upon header information in said incoming encoded data (202).Type: GrantFiled: March 30, 2007Date of Patent: October 28, 2008Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Chun Kit Hung, Kin Wing An
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Publication number: 20080258598Abstract: A heat exchange device that includes a structural section and a thin layer of material attached to a surface of the structural section. The thin layer of material has a thickness less than 100 microns. The combination of the structural section and the thin layer of material has a higher thermal transfer coefficient than the structural section alone, the thermal transfer coefficient representing an ability to exchange thermal energy with an ambient gas.Type: ApplicationFiled: June 13, 2008Publication date: October 23, 2008Applicant: Hong Kong Applied Science & Technology Research Institute Co. Ltd.Inventor: Geoffrey Wen-Tai Shuy
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Patent number: 7441099Abstract: Methods and apparatuses for processing a Configurable Single-Instruction-Multiple-Data (CSIMD) instruction are disclosed. In the method, a lookup table (LUT) storing information is provided to support random access of memory locations associated with a plurality of processing elements (PEs) and to perform instruction variances by the PEs. A CSIMD instruction is received, comprising a command and an index to the lookup table (LUT), to be executed by the PEs. The command of the received CSIMD instruction is executed in parallel differently by the PEs using the LUT index to randomly access the memory locations.Type: GrantFiled: October 3, 2006Date of Patent: October 21, 2008Assignee: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Wing Yee Lo, Simon Moy
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Patent number: 7440280Abstract: A heat exchange structure includes a plurality of elongated air ducts. The heat exchange structure has an exterior heat exchange surface and interior heat exchange surfaces, the interior surfaces being in the elongated air ducts. The heat exchange structure includes a plurality of heat generators that are distributed on the exterior heat exchange surface along an elongated direction of the air ducts, in which air flowing in the air duct is heated successively by heat from the heat generators, and air flow in the air duct is enhanced by buoyancy of heated air.Type: GrantFiled: March 31, 2006Date of Patent: October 21, 2008Assignee: Hong Kong Applied Science & Technology Research Institute Co., LtdInventor: Geoffrey Wen-Tai Shuy
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Publication number: 20080239325Abstract: A method of sensing movement or proximity of objects by optical reflection is provided. The method includes the steps of transmitting a train of optical pulses towards a destination, sensing optical pulses reflected from the destination, and sensing and evaluating movement or proximity characteristics of objects at the destination with reference to variation in pulse width between transmitted and reflected optical pulses.Type: ApplicationFiled: March 29, 2007Publication date: October 2, 2008Applicant: Hong Kong Applied Science Technology Research Institute Co. Ltd.Inventors: Kwok Sing Cheng, Ho Shan Ng, Lai Man Chau, Yeung Ming Chow, Tao Tao