Patents Assigned to Applied Science & Technology
  • Patent number: 7766533
    Abstract: The present invention provides an illumination module, and a display and a general lighting apparatus using the same. Said illumination module includes a plurality of light guiding strips arranged in juxtaposition with a predefined distance; a plurality of light sources, disposed on at least one end of said light guiding strips respectively for providing the light into said light guiding strips; and a plurality of light reflecting units, disposed between said light guiding strips for reflecting the light from said light guiding strips. The light reflecting units according to the present invention can guide the light from the sides of light guiding strips or other light not toward the right side of the illumination module back to the right side of the illumination module, and thus improving the light output efficiency and uniformity.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: August 3, 2010
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Ying Liu, Pak-Hong Ng, Shou-Lung Chen
  • Patent number: 7764215
    Abstract: An Analog-to-Digital Converter (ADC) has a Successive-Approximation-Register (SAR) driving a digital-to-analog converter (DAC) that generates an analog voltage compared to an input voltage by a series of stages. The last stage feeds a compare signal to the SAR. Each stage has a dual-input differential amplifier that operates as a unity gain op amp during an auto-zeroing phase and as a high-speed low-gain amplifier during an amplifying phase. The dual-input differential amplifier has two pairs of differential inputs. A secondary pair has an offset-storing capacitor across it, and connects to the output pair through feedback switches during auto-zeroing. A primary pair connects to stage inputs through input switches during the amplifying phase. Since two pairs of differential inputs are provided to the dual-input differential amplifier, the offset capacitor is completely isolated from the input pair. The current sink in the dual-input differential amplifier is adjusted higher during the amplifying period.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: July 27, 2010
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Ho Ming Karen Wan, Yat To William Wong, Kwai Chi Chan, Kwok Kuen David Kwong
  • Publication number: 20100180043
    Abstract: A method includes receiving encoded media content, transforming the encoded media content into web page content by dividing the encoded media content into a plurality of web page files formatted as a static web page, and transmitting the web page content over the network in response to a request.
    Type: Application
    Filed: January 13, 2009
    Publication date: July 15, 2010
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Kam Hing Lau, Ka Yuk Lee, Kang Heng Wu, Tak Wing Lam
  • Publication number: 20100170725
    Abstract: A system and method for touch detection and a touch-responsive surface are provided. According to one embodiment, a “virtual” touch-sensitive surface in is provided in that a plurality of transmitter-sensor devices receive and calculate a touch by detecting position and movement on a touch surface. The touch surface includes a planar surface; a first transmitter-sensor device located at a first position proximate to the planar surface and a second transmitter-sensor device located at a second position proximate to the planar surface, wherein each of the transmitter-sensors includes a light beam emitter and a scanning micromirror to reflect the light beam across the planar surface. A processing unit is in operable communication with the first transmitter-sensor device and the second transmitter-sensor device, and the processing unit is configured to calculate the position of a touch on the planar surface based on one or more times of refection of the light beams.
    Type: Application
    Filed: January 6, 2009
    Publication date: July 8, 2010
    Applicant: Hong Kong Applied Science and Technology Research Institute
    Inventors: Amy Mei Sze Au-Yeung, I-Ting Tsai, Shou Lung Chen, Chen Jung Tsai
  • Publication number: 20100171636
    Abstract: A remote control device comprising a motion detector consisting of a single accelerometer, means for receiving data from the motion detector and mapping the received motion detector data to at least one user instruction, and means for transmitting a signal indicative of the at least one user instruction.
    Type: Application
    Filed: October 20, 2009
    Publication date: July 8, 2010
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Ka Yuk Lee, Qing Shan, Tak Wing Lam, Yeaun Jan Liou
  • Publication number: 20100164625
    Abstract: An error amplifier can be used to control a power regulator transistor. The error amplifier has a main amplifier, a pull-up auxiliary amplifier, and a pull-down auxiliary amplifier that all drive an output. A compensating capacitor on the output sets a single dominant pole for all amplifiers, increasing stability. High slew rates are provided by increased slew current from the auxiliary amplifiers that turn on when the differential input has an absolute voltage difference larger than an intentional offset. The intentional offset is introduced into the auxiliary amplifiers by adjusting a p-channel to n-channel transistor ratio in a leg of the auxiliary amplifiers. A source degenerated resistor in the main amplifier reduces supply headroom and increases linearity by connecting sources of two differential transistors that receive the differential input. Cascode transistors increase gain and output impedance. Reliability is increased as no positive feedback is used in the amplifiers.
    Type: Application
    Filed: December 30, 2008
    Publication date: July 1, 2010
    Applicant: Hong Kong Applied Science & Technology Research Institute Company Limited
    Inventors: Yat To (William) Wong, Chik Wai (David) Ng, Ho Ming (Karen) Wan, Kam Chuen Wan, Kwok Kuen (David) Kwong
  • Publication number: 20100164770
    Abstract: An Analog-to-Digital Converter (ADC) has a Successive-Approximation-Register (SAR) driving a digital-to-analog converter (DAC) that generates an analog voltage compared to an input voltage by a series of stages. The last stage feeds a compare signal to the SAR. Each stage has a dual-input differential amplifier that operates as a unity gain op amp during an auto-zeroing phase and as a high-speed low-gain amplifier during an amplifying phase. The dual-input differential amplifier has two pairs of differential inputs. A secondary pair has an offset-storing capacitor across it, and connects to the output pair through feedback switches during auto-zeroing. A primary pair connects to stage inputs through input switches during the amplifying phase. Since two pairs of differential inputs are provided to the dual-input differential amplifier, the offset capacitor is completely isolated from the input pair. The current sink in the dual-input differential amplifier is adjusted higher during the amplifying period.
    Type: Application
    Filed: December 31, 2008
    Publication date: July 1, 2010
    Applicant: Hong Kong Applied Science & Technology Research Institute Company Limited
    Inventors: Ho Ming (Karen) Wan, Yat To (William) Wong, Kwai Chi Chan, Kwok Kuen Kwong
  • Publication number: 20100164761
    Abstract: A re-configurable circuit acts as an Analog-to-Digital Converter (ADC) and as a digital-to-analog converter (DAC). An array of binary-weighted capacitors stores an analog input. Switches connect different capacitors in the array to fixed voltages that cause charge-sharing with a terminal capacitor. The voltage of the terminal capacitor is compared by a re-configurable comparator stage for each different combination of the capacitors. The comparison results are analyzed to determine the closest digital value for the analog input. In DAC mode, the array capacitors are switched based on an input digital value. The switched capacitors connect to a charge-sharing line to generate an analog voltage that is applied to the re-configurable comparator stage. A differential amplifier generates a buffered analog voltage that is fed back to the other input of the re-configurable comparator stage for unity gain. The gain of the re-configurable comparator stage adjusts for ADC and DAC modes.
    Type: Application
    Filed: December 30, 2008
    Publication date: July 1, 2010
    Applicant: Hong Kong Applied Science & Technology Research Institute Company Limited
    Inventors: Ho Ming Karen Wan, Yat To William Wong, Kwai Chi Chan, Hok Mo Yau, Tin Ho Andy Wu, Kwok Kuen David Kwong
  • Patent number: 7742463
    Abstract: Admission control means for controlling admission of traffic into a voice communication network, the admission control means comprises means for examining a call control message of a call control dialogue when admission of said traffic into said voice communication network is requested, the admission control means admit a traffic into said voice communication network only if the call control message accompanying the traffic admission request satisfies a pre-determined admission criterion.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: June 22, 2010
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Pak Kit Lam, Kar-Wing Edward Lor
  • Patent number: 7741981
    Abstract: A re-configurable circuit acts as an Analog-to-Digital Converter (ADC) and as a digital-to-analog converter (DAC). An array of binary-weighted capacitors stores an analog input. Switches connect different capacitors in the array to fixed voltages that cause charge-sharing with a terminal capacitor. The voltage of the terminal capacitor is compared by a re-configurable comparator stage for each different combination of the capacitors. The comparison results are analyzed to determine the closest digital value for the analog input. In DAC mode, the array capacitors are switched based on an input digital value. The switched capacitors connect to a charge-sharing line to generate an analog voltage that is applied to the re-configurable comparator stage. A differential amplifier generates a buffered analog voltage that is fed back to the other input of the re-configurable comparator stage for unity gain. The gain of the re-configurable comparator stage adjusts for ADC and DAC modes.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: June 22, 2010
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Ho Ming Karen Wan, Yat To William Wong, Kwai Chi Chan, Hok Mo Yau, Tin Ho Andy Wu, Kwok Kuen David Kwong
  • Publication number: 20100148727
    Abstract: A charge/discharge protection circuit protects a battery from inadvertent shorting on a charger node that can connect to a charger or to a power supply of a portable electronic device. A single n-channel power transistor has a gate that controls a channel between the battery and the charger node. The gate is connected to the charger node by a gate-coupling transistor to turn off the power transistor, providing battery isolation. The gate is driven by a voltage-boosted clock through a switch activated by an enable signal. The enable signal also activates a grounding transistor to ground a gate of the gate-coupling transistor. A comparator compares voltages of the charger and battery nodes, and the compare output is latched to generate the enable signal. An inverse enable signal activates a second switch that drives the voltage-boosted clock to the gate of the gate-coupling transistor to turn off the power transistor.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 17, 2010
    Applicant: Hong Kong Applied Science & Technology Research Institute Company Limited
    Inventors: Kwok Kuen Kwong, Yat To Wong, Ho Ming (Karen) Wan, Chik Wai Ng
  • Publication number: 20100146138
    Abstract: Systems and methods are provided for scheduling data requests for streaming media data in a Peer-to-Peer (P2P) network. A method is provided to increase a peer's contribution to the whole P2P network by partitioning the data chunks to request into several regions according to their relative time urgency, and data requests are scheduled in an effort to maintain availability of data in each region to a corresponding predefined target amount.
    Type: Application
    Filed: December 9, 2008
    Publication date: June 10, 2010
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Chun Yin Ng, Kang Heng Wu, Liang Qiao Chen, Tak Wing Lam
  • Publication number: 20100142063
    Abstract: The subject matter disclosed herein relates to an actuator to adjust a position of a lens.
    Type: Application
    Filed: December 10, 2008
    Publication date: June 10, 2010
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Sio Kuan Lam, Kwok Sing Cheng, Kin Ming Fan, Hua Yang, Wing Ming Fan
  • Publication number: 20100146137
    Abstract: A method performed by a new joining peer device in a peer-to-peer (P2P) network comprises receiving a plurality of buffer maps, each of the received buffer maps associated with a respective other peer device in the P2P network. The method also includes discerning playback positions associated with the received buffer maps, generating a starting offset for the new joining peer using one or more of the discerned playback positions. Requests for portions of a media stream are scheduled in accordance with the starting offset, and the scheduler will build a buffer map from this offset and begin to request the media buffer.
    Type: Application
    Filed: December 9, 2008
    Publication date: June 10, 2010
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Kang Heng Wu, Chun Yin Ng, Liang Qiao Chen, Tak Wing Lam
  • Patent number: 7733506
    Abstract: An optical arrangement includes a position sensitive optical detector, a collimated optical source, and a processor configured to monitor the inclination of an object. The collimated optical source is configured to transmit a collimated beam towards the object. The position sensitive optical detector is configured to detect the specific location of incidence of an optical signal received from the object, and the processor is configured to generate information relating to the inclination of the object from processing optical signals received at the position sensitive optical detector.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: June 8, 2010
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventor: Kwok Sing Cheng
  • Publication number: 20100135588
    Abstract: This invention relates to method and apparatus for subpixel-based down-sampling. This invention implements an adaptive filter 140 based on edge detection, which removes visible color fringing artifacts while efficiently retaining sharpness.
    Type: Application
    Filed: December 2, 2008
    Publication date: June 3, 2010
    Applicant: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Oscar Chi-Lim Au, Lu Fang, Hon Wah Wong, Yi Yang, Yan Huo
  • Publication number: 20100128233
    Abstract: An LED light shaping device and illumination system are provided. According to one embodiment, a light shaping lens is configured to shape light emitted from a light source and direct the light on a display panel for projection. The light shaping lens comprises a light input surface configured to receive light emitted from the light source a reflective surface configured to reflect at least part of the light received by the light source; and a light output surface having a first curvature in a first direction and a second curvature in a second direction, wherein the light output surface is configured to emit the light that is received by the light input surface and reflected by the reflective surface, and wherein the first curvature and the second curvature are configured to shape the light such that the emitted light has an oval cross section.
    Type: Application
    Filed: November 21, 2008
    Publication date: May 27, 2010
    Applicant: Hong Kong Applied Science and Technology Research Institute
    Inventors: Ying LIU, Shou Lung CHEN
  • Patent number: 7725014
    Abstract: There is provided an actuator used in an optical system comprising a housing, a carrier disposed at least partly inside the housing, and a plurality of linear motion transducers coupled to the carrier and substantially evenly spaced around the carrier within the housing. Each linear motion transducer is able to produce linear motion when energized displacing the carrier relative to the housing to produce linear motion, tilting motion, or both of the carrier.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: May 25, 2010
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Sio Kuan Lam, Wing Ming Fan, Tiegang Liu, Kwok Sing Cheng, Ho Shan Ng
  • Publication number: 20100123241
    Abstract: Subject matter disclosed herein may relate to packaging for multi-chip semiconductor devices as may be used, for example, in flash memory devices. In an example embodiment, a semiconductor chip may comprise a through-silicon via and a sidewall pad.
    Type: Application
    Filed: November 18, 2008
    Publication date: May 20, 2010
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Xunqing Shi, Bin Xie, Chang Hwa Chung
  • Patent number: 7720016
    Abstract: A routing method for communication from a source node to a destination node in a distributed wireless network which comprises a plurality of wireless mobile nodes.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: May 18, 2010
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Yui Ming Tsang, Jun Chen, Raymond Yan Lam Lee