Patents Assigned to Hong Kong Applied Science and Technology Research Institute Co., Ltd.
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Publication number: 20110062454Abstract: A light emitting device with a remotely located light scattering material which improves color mixing property is provided. The light emitting device includes a substrate defining a cavity; one or more light emitting elements bonded to the substrate and positioned in the cavity; at least one first layer covering the one or more light emitting elements, at least part of the at least one first layer within the cavity, wherein the at least one first layer has a refractive index less than the refractive index of the one or more light emitting elements; and at least one second layer including light scattering material disposed on the at least one first layer, wherein the refractive index of the first layer is less than or equal to the refractive index of the second layer.Type: ApplicationFiled: September 11, 2009Publication date: March 17, 2011Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Shan Mei Wan, Ming Lu
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Publication number: 20110057557Abstract: A projection light emitting diode (LED) module is provided. According to one embodiment, the LED module converts LED light to polarized light and emits the polarized light. One embodiments of the LED module includes a reflective polarizer positioned in a light emission path of the LED light, wherein the reflective polarizer polarizes the LED light, and the reflective polarizer further transmits the first polarization state light and reflects the second polarization state light; and a polarization conversion element bonded to the reflective polarizer, the polarization conversion element positioned between the LED light and the reflective polarizer, wherein the polarization conversion element coverts the second polarization state light to a desired polarization state light. A reflecting cup may be provided to increase the reflection of light back through the polarization conversion element and the reflective polarizer. The LED module may be configured for use with commercially available LED packages.Type: ApplicationFiled: September 8, 2009Publication date: March 10, 2011Applicant: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Yong Chi, Shou Lung Chen, Weiping Tang
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Patent number: 7902727Abstract: An apparatus and method for generating electricity using piezoelectric material. The apparatus comprises a first elongate member and a second elongate member that are joining together at first and second points which are spaced apart from each other. The second elongate member comprises a piezoelectric element, or has a piezoelectric element mounted thereon. When pressure is applied to the first elongate member, the second elongate member is stretched and the stretching force is applied to the piezoelectric element. This generates electricity. A similar arrangement with a third elongate member may be provided on the other side of the second elongate member. The apparatus may be placed in a shoe or underneath a floor, so that the variation in pressure caused by walking may be used in generate electricity.Type: GrantFiled: August 11, 2009Date of Patent: March 8, 2011Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Man-Lung Sham, Ziyang Gao, Tung Ching Lui, Chang Hwa Chung
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Patent number: 7903900Abstract: Methods and apparatuses for color denoising are described. There is provided an image processing method. The method comprises the steps of retrieving chrominance level for a plurality of pixels in a predetermined configuration; computing a weight for each pixel; applying the weight to the chrominance level for each the pixel; summing the weighted chrominance level to output a chrominance level for a center pixel at the center of said predetermined configuration; and repeating the above steps for every pixel per image. The color noise can be reduced while preserving the edge without any edge detection.Type: GrantFiled: March 30, 2007Date of Patent: March 8, 2011Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Hon Wah Wong, Ka Man Cheng, Kar Kin Edwin Lee
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Publication number: 20110051428Abstract: A light emitting diode (LED) light engine is provided. According to one embodiment of the invention, the LED light engine includes a housing; an LED mounting board secured within the housing, the LED mounting board including one or more LED electrically connected to the LED mounting board, the LED mounting board configured to receive power from a power source to power the one or more LED; and a heat bridge conductively coupling the LED mounting board to the housing, wherein the heat bridge is configured to conduct heat from the LED mounting board to the housing, wherein the housing is configured to dissipate heat. The heat bridge may take one of several different configurations. A lighting assembly may be provided for securely mounting one or more LED light engines.Type: ApplicationFiled: September 3, 2009Publication date: March 3, 2011Applicant: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Yang Liu, De Liang Ding, MIng Lu
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Publication number: 20110050120Abstract: A lighting control system and an LED lamp for use with the lighting control system are provided. In one embodiment, the LED lamp includes a color LED including a red LED, a green LED, and a blue LED, and a lamp contact having a first contact section, a second contact section, and a third contact section, each of the first contact section, the second contact section, and the third contact section including a positive contact and a negative contact, wherein the first contact section is electrically connected to the red LED, the second contact section is electrically connected to the green LED, and the third contact section is electrically connected to the blue LED. The lighting control system may include an LED driver unit configured to provide independent electrical connection with each of the contact sections of the LED lamp.Type: ApplicationFiled: September 1, 2009Publication date: March 3, 2011Applicant: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Chun Kai Leung, Kai Chiu Wu, Tik Shun Leung, Kin Cheong Li, Ming Lu
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Publication number: 20110041246Abstract: Systems and methods in which temperature regulated cushioning systems are provided in hygienic, convenient configurations are shown. Embodiments provide heating and cooling to provide temperature regulation adapted for human comfort and/or therapeutic effects. Heating and cooling systems implemented with respect to cushioning systems are configured to provided desired temperature regulation for the cushioning system when in use while facilitating hygienic cleaning of the cushioning system. Cushioning structure is preferably adapted to be low weight and to facilitate desired temperature regulation while providing a structure which passively supports and cushions expected loads. Cushion media utilized according to embodiments is modular, such as may comprise a plurality of smaller blocks adapted to cooperate to form a larger cushioning structure.Type: ApplicationFiled: August 20, 2009Publication date: February 24, 2011Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Geng Li, Cho-Yee Joey Chow
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Patent number: 7891842Abstract: A heat-dissipating reflector for a lighting device having a reflecting surface for reflecting light from a light emitting source of the lighting device, and a plurality of ventilation openings formed through the reflecting surface for dissipating heat generated by the light emitting source.Type: GrantFiled: August 7, 2008Date of Patent: February 22, 2011Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Ming Lu, Kai Chiu Wu, Lei Shi, Lai Man Chau
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Patent number: 7889445Abstract: A lens actuation device for an optical system includes a housing, a carrier at least partially installed in the housing, and a plurality of transducers arranged around the carrier in the housing. All the transducers are coupled with the mount, and at least one transducer includes at least one magnet and at least one coil. At least one transducer includes at least one yoke. All the transducers when powered on may generate independent or consistent movement to cause the mount to make linear movement, rotation, or both relative to the housing. An optical system adopting the lens actuation device and a camera using the same are also presented. The device of the present invention uses the transducers to drive the carrier, such that the lens set is driven to make linear movement, rotation, or both, thereby achieving the flexible manipulation of the lens.Type: GrantFiled: October 30, 2008Date of Patent: February 15, 2011Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Hua Yang, Sio Kuan Lam, Kwok Sing Cheng, Kin Ming Fan, Wing Ming Fan
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Publication number: 20110026149Abstract: The subject matter disclosed herein relates to an imaging device having a small form factor.Type: ApplicationFiled: July 28, 2009Publication date: February 3, 2011Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Kin Ming Fan, Kai Cheong Kwan, Kwok Sing Cheng, Sio Kuan Lam
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Patent number: 7879438Abstract: The subject matter disclosed herein relates to methods to reduce warpage of a substrate.Type: GrantFiled: March 26, 2009Date of Patent: February 1, 2011Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Jyh-Rong Lin, Bin Xie, Yeung Yeung, Xunqing Shi, Chang Hwa Chung
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Patent number: 7881392Abstract: Systems and methods which are adapted determine timing with respect to an orthogonal frequency division (OFD) channel, such as may be used with respect to an OFDM or OFDMA systems through reliably identifying timing of a first arriving signal path. Embodiments use deconvolution to construct the channel impulse response associated with a received signal. The first arriving path for the received signal may readily and reliably be determined using the channel impulse response information.Type: GrantFiled: March 30, 2007Date of Patent: February 1, 2011Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventor: Qiang Li
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Publication number: 20110013138Abstract: A vision treatment system comprises a computer and a user input output module associated with the computer, the user input output module including a display screen and means for receiving user input, wherein the computer includes a testing and training module for one or more vision disorders, the training and testing module in communication with the user input output module and testing a user's cutoff spatial frequency of a contrast sensitivity and applying a training regimen based upon Perceptual Template Model (PTM) analysis of interactions with the user.Type: ApplicationFiled: July 14, 2009Publication date: January 20, 2011Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Geng Li, Zhong-Lin Lu, Xiangrui Li, Chang-Bing Huang, Jia-Hong Gao, Yeung-Ming Chow
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Publication number: 20110012788Abstract: An antenna system comprising a ground plane, an antenna element folded under itself and operable to transmit and receive circularly polarized signals, an air filled cavity disposed between the ground plane and the antenna element, and a radio frequency module in communication with the antenna element.Type: ApplicationFiled: July 14, 2009Publication date: January 20, 2011Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Corbett R. Rowell, Hau Wah Lai
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Publication number: 20100329378Abstract: MIMO detection is described that reduces the complexity of computations for finding the soft bit output. The detection process includes QR factorization splitting the distance calculations into two groups, subset lookup using a last cross constellation set (LCCS) lookup, and minimal distance lookup with soft bit output calculation. By grouping the distance calculations into a first group that has one antenna transmitting using a modulation scheme with a generally square constellation diagram and a second group for all of the other antenna constellation diagrams, the LCCS lookup process may be used which substantially reduces the number of calculations to be made in the detection process. Moreover, in the special case of 2×2 antenna, QR factorization is performed by applying a scaled Givens rotation to the channel matrix. The application of the scaled Givens rotation operator eliminates any square root operations that would be performed in a standard QR factorization.Type: ApplicationFiled: June 30, 2009Publication date: December 30, 2010Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventor: Chris Leung
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Publication number: 20100328171Abstract: An antenna system comprises a ground plane, a flexible substrate, a first antenna element disposed upon the flexible substrate and proximal to the ground plane, the flexible substrate configured so as to be at least partially rolled, and a Radio Frequency (RF) module in communication with the first antenna element and transmitting and receiving radio waves through the first antenna element.Type: ApplicationFiled: June 25, 2009Publication date: December 30, 2010Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Chi Lun Mak, Hau Wah Lai, Corbett R. Rowell
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Publication number: 20100331690Abstract: An elastogram device comprises a driver controller including a wave generator, and an amplifier assembly receiving waves from the wave generator for driving an actuator, the amplifier assembly compatible with at least one pneumatic actuator, at least one hydraulic actuator, at least one piezoelectric actuator, and at least one electromechanical actuator, an elastogram processor receiving a wave image from an imaging source and generating an elastogram from the wave image, and a user input and output assembly including a display rendering the elastogram, a user interface providing a plurality of options for selection, the options including selectable parameters to control the wave generator and to generate the elastogram.Type: ApplicationFiled: June 30, 2009Publication date: December 30, 2010Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Geng Li, Ying Zheng, Edward S. Yang
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Patent number: 7859883Abstract: 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: GrantFiled: September 14, 2007Date of Patent: December 28, 2010Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Geoffrey Wen-Tai Shuy, Hsin-Cheng Lai
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Patent number: 7860634Abstract: A method of determining the location information of a plurality of wheels mounted on a vehicle by obtaining a relationship between the lateral location of a wheel and the polarity of a transverse acceleration transmitted by an accelerometer of a wheel in response to a lateral turn of the vehicle in a direction of a lateral side of the vehicle and determining the lateral location of a wheel with reference to the polarity of the transverse acceleration signal transmitted by the accelerometer of the wheel upon the vehicle undergoing a lateral turn.Type: GrantFiled: September 27, 2007Date of Patent: December 28, 2010Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Kwan Wai Raymond To, Lap-Wai Lydia Leung, Ziyang Gao, Man Lung Ivan Sham, Chang Hwa Chung
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Patent number: 7841739Abstract: The present invention discloses a coupling lens system, which comprises a collimation lens for collimating light from light source to a first direction; a first lens surface for total internal reflecting light from light source to the first direction; and a second lens surface for total internal reflecting light from the first direction to a second direction. Wherein an angle between the first direction and the second direction can be larger than, smaller than or equal to 90 degrees, and preferably between 70 to 100 degrees. Additionally, the system further comprises at least one extra surface parallel to the second lens surface, wherein at least one extra surface has a length L and is parallel to each other. At the same time, each surface and another surface has a distance D in between, and the length L can be equaled to or larger than the distance D according to purposes and further modifies a shape of the coupling lens system.Type: GrantFiled: December 19, 2007Date of Patent: November 30, 2010Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Ying Liu, Chen-Jung Tsai