Patents Assigned to Hong Kong University of Science and Technology
  • Patent number: 8923390
    Abstract: Systems, methods, and apparatus for adaptively zeroing out transform coefficients utilizing a bit-stealing parameter are presented herein. A partitioning component can be configured to separate an image into blocks of video data. Further, a frequency transform component can be configured to transform pixels of a block of the blocks into transform coefficients. Furthermore, a bit-stealing quantization component configured to predefine quantization intervals. Moreover, the bit-stealing quantization component can modify a size of a quantization interval of the quantization intervals based on a variable bit-stealing parameter. Further, the bit-stealing component can quantize a transform coefficient of the transform coefficients, based on the quantization interval, to a quantized coefficient value of quantized coefficient values.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: December 30, 2014
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Oscar Chi Lim Au, Ngai Man Cheung, Xingyu Zhang
  • Publication number: 20140376655
    Abstract: Interference alignment for a multiple-input multiple-output communications network with partial connectivity is provided. A method is provided that includes determining assignments for data streams transmitted in the multiple-input multiple-output communications network. The method also includes suppressing inter-cell interference and suppressing intra-cell interference. Also provided is inter-cell/intra-cell decomposition and exploitation of partial connectivity in a multiple-input multiple-output communications network. The multiple-input multiple-output communications network can comprise three or more cells.
    Type: Application
    Filed: February 21, 2013
    Publication date: December 25, 2014
    Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Liangzhong Ruan, Vincent Kin Nang Lau, Xiongbin Rao
  • Patent number: 8908424
    Abstract: The subject application describes systems and methods that drive magnetization switching through magnonic spin transfer torque. A spin current is provided to a first magnetic layer with a first magnetic state. The spin current facilitates magnetization switching via a magnonic spin transfer torque in a second magnetic layer with a second magnetic state that is separated from the first magnetic layer by an interface. Alternatively, a spin current is provided to a first magnetic domain with a first magnetic state. The spin current facilitates domain wall propagation via a magnonic spin transfer torque. The domain wall is between the first magnetic domain and a second magnetic domain in a second magnetic state.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: December 9, 2014
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Xiangrong Wang, Peng Yan, Xiansi Wang
  • Patent number: 8893519
    Abstract: A cooling system and method for a machining process. The system includes a coolant supply and a coolant activation assembly, where the coolant supply is configured to provide coolant to the coolant activation assembly. The coolant activation assembly includes a plurality of piezoelectric actuators. Each of the plurality of piezoelectric actuators is configured to emit a coolant stream and to impart an ultrasonic or megasonic vibration component to each coolant stream. The coolant activation assembly is configured to provide cooling to a focal point in a work zone by directing multiple coolant streams emitted by the plurality of piezoelectric actuators to the focal point such that multiple coolant streams converge at the focal point.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: November 25, 2014
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Yongsheng Gao, Shengyin Zhou
  • Publication number: 20140341961
    Abstract: The present invention provides a method for preparing a material in the form of liquid for forming an antimicrobial surface coating with multi-level antimicrobial properties, comprising: encapsulating one or more volatile or gaseous biocides in two or more amphiphilic block copolymers to obtain a w/o/w double emulsion, and mixing the w/o/w double emulsion with one or more nonvolatile biocides, each of which is selected from the group consisting of a metal containing biocide, triclosan, a carboxylic acid, a sugar acid and a combination thereof.
    Type: Application
    Filed: April 15, 2014
    Publication date: November 20, 2014
    Applicant: The Hong Kong University of Science and Technology Technology Transfer Center
    Inventors: King Lun Yeung, Wai Kin Leung
  • Patent number: 8890312
    Abstract: A heat dissipation structure with aligned carbon nanotube arrays formed on both sides. The carbon nanotube arrays in between a heat source and a cooler are used as thermal interface material extending and dissipating heat directly from a heat source surface to a cooler surface. In some embodiments, an adhesive material can be used to dispense around carbon nanotube arrays and assemble the heat dissipation structure in between a heat source and a cooler. In some other embodiments, carbon nanotube arrays are formed on at least one of a heat source surface and a cooler surface and connect them together by further growing. The carbon nanotube arrays can be exposed to the environment instead of being in between a heat source and a solid cooler, and can serve as fins to enlarge heat dissipation area and improve thermal convection.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: November 18, 2014
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Matthew Ming Fai Yuen, Kai Zhang
  • Publication number: 20140328764
    Abstract: The development of fluorescent bioprobes comprising organic fluorescent compounds that exhibit aggregation induced emission (AIE) properties, methods of producing the same, and their practical applications for in vitro and in vivo bioimaging.
    Type: Application
    Filed: September 3, 2012
    Publication date: November 6, 2014
    Applicants: NATIONAL UNIVERSITY OF SINGAPORE, THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Benzhong Tang, Wei Qin, Jianzhao Liu, Sijie Chen, Tsz Kin Kwok, Bin Liu, Kai Li, Dan Ding, Haibin Shi, Jun Long Geng, Jingzhi Sun, Anjun Qin, Qiuli Zhao
  • Patent number: 8878176
    Abstract: A thin-film transistor with a fluorinated channel and fluorinated source and drain regions and methods of fabrication are provided. The thin-film transistor includes: a substrate; a semiconductor active layer of fluorine-doped metal-oxide formed on the substrate; fluorine-doped source and drain regions disposed adjacent to the semiconductor active layer; a gate electrode disposed over the semiconductor active layer, configured to induce a continuous conduction channel between the source and drain regions; and a gate dielectric material separating the gate electrode and the channel.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: November 4, 2014
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Man Wong, Hoi Sing Kwok, Zhi Ye
  • Patent number: 8877298
    Abstract: Wetting and print transfer from a printing patterned transfer surface is enhanced by applying an ultraviolet radiation responsive material to the patterned transfer surface. Ultraviolet activation of the ultraviolet responsive coating is performed during a transfer of printing material to a substrate. The technique increases precision of the printing process and is useful for transfer of printing material to a substrate in order to establish printed circuit components such as circuit traces and printed circuit elements on the substrate. In a particular configuration the ultraviolet radiation responsive material can be made of azobenzene material or free radical initiators.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: November 4, 2014
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Matthew Ming Fai Yuen, Edward King Long Chan, Cheng Yang
  • Patent number: 8859698
    Abstract: A sulfur-containing macromolecule and a method of preparing the sulfur-containing macromolecule comprising a polymerization step are provided, where the sulfur-containing macromolecule contains internal units of formula (I) and the polymerization step is formula (II) wherein n is greater than 1, said precursor comprises alkyne having one or more acetylene groups and thiol having one or more thiol groups; and R is remainder of said thiol excluding said thiol groups, R? is remainder of said alkyne excluding said acetylene groups, and R and R? are selected from organic or organometallic groups.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: October 14, 2014
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Benzhong Tang, Ka Wai Jim, Anjun Qin, Wing Yip Lam, Jianzhao Liu
  • Patent number: 8857564
    Abstract: A device with simultaneous negative effective mass density and bulk modulus has at least one tubular section and front and back membranes sealing the tubular section. The front and back membranes sealing the tubular sections seal the tubular section sufficiently to establish a sealed or restricted enclosed fluid space defined by the tubular section and the membranes, and restrict escape or intake of fluid resulting from acoustic vibrations. A pair of platelets are mounted to the membranes, with the individual platelets substantially centered on respective ones of the front and back membranes.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: October 14, 2014
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Guancong Ma, Min Yang, Ping Sheng, Zhiyu Yang
  • Patent number: 8854580
    Abstract: A method of producing spatially varying pretilt angles across a liquid crystal cell coats a substrate with a polyimide alignment layer and a layer of photoalignment material on top of the polyimide layer. An applied beam with variable light dosage spatial or temporal profiles is then used to achieve a corresponding pretilt angle distribution.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: October 7, 2014
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Hoi Sing Kwok, Yuet Wing Li, Man Chun Tseng
  • Publication number: 20140296688
    Abstract: A surface deformation sensor that includes a resonance circuit is described herein. The resonance circuit includes a sensing capacitor and inductive coil. The resonance circuit receives an external signal, which causes the resonance circuit to resonate at a resonance frequency. A surface deformation of an object can be determined based on the resonance frequency.
    Type: Application
    Filed: May 15, 2012
    Publication date: October 2, 2014
    Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: David Chuen Chun Lam, Guozhen Chen, Ion Seng Chan
  • Publication number: 20140295208
    Abstract: Roll-to-roll fabrication of predetermined or ordered three-dimensional nanostructure arrays is described. Provided methods can comprise imprinting a substrate with a two-dimensional (2-D) pattern by rolling a cylindrical pattern comprising a 2-D array of structures against a substrate. In addition, control or determination of nanostructure parameters via control of process parameters is provided.
    Type: Application
    Filed: March 10, 2014
    Publication date: October 2, 2014
    Applicant: The Hong Kong University of Science and Technology
    Inventors: Zhiyong Fan, Siu-Fung Leung
  • Patent number: 8847169
    Abstract: The invention provides a CMOS CT detector design with high linearity, quantum-limited noise, good scalability, high fill factor with a single CMOS chip utilizing synchronous partial quantization. The CMOS CT detector includes a pixel array, digital column buses, analog column buses, column processing circuits, a shift register, a control signal generation circuit, and a reference generation circuit, and implements a synchronous partial quantization scheme with reset, integration and analog readout phases. Each pixel of the pixel array further includes a photodiode; an integration capacitor; an OPAMP; a reset switch; a comparator; a 1-bit dynamic random-access-memory (DRAM) cell; a circuit block for enabling subtraction of a substantially fixed amount of charge from the integrated photocharge if the integrated photovoltage increases beyond the reference voltage; an integration node; an analog buffer; and a switch coupled between the output of the DRAM cell and the digital column bus.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: September 30, 2014
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Jie Yuan, Bing Liu
  • Patent number: 8840863
    Abstract: A method for the synthesis of nano-products, such as atomic titanium oxide wires. The method allows wires of anatase titanium oxide wires to be formed in a range of tunable diameters and aspect ratios in the nanometer and subnanometer size scales. The method also allows the titanium wires to be capped by oleic acid to enhance dispersing and solubility. The method allows the titanium wires to be surface doped with nitrogen species to enhance stability and functionality such as enhanced absorption in the visible wavelength region, which is useful for photodegradation of organic wastes in water by sunlight.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: September 23, 2014
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Shihe Yang, Chenmin Liu
  • Patent number: 8835833
    Abstract: A two-dimensional (2D) magneto-optical trap (MOT) for alkali neutral atoms establishes a zero magnetic field along the longitudinal symmetry axis. Two of three pairs of trapping laser beams do not follow the symmetry axes of the quadruple magnetic field and are aligned with a large non-zero degree angles to the longitudinal axis. In a dark-line 2D MOT configuration, there are two orthogonal repumping beams. In each repumping beam, an opaque line is imaged to the longitudinal axis, and the overlap of these two line images creates a dark line volume in the longitudinal axis where there is no repumping light. The zero magnetic field along the longitudinal axis allows the cold atoms maintain a long ground-state coherence time without switching off the MOT magnetic field, which makes it possible to operate the MOT at a high repetition rate and a high duty cycle.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: September 16, 2014
    Assignees: The Hong Kong University of Science and Technology, The Board of Trustees of the Leland Stanford Junior University
    Inventors: Shengwang Du, Shanchao Zhang, Shuyu Zhou, Guang Yu Yin, Chinmay Belthangady
  • Publication number: 20140255696
    Abstract: Fluorescent silica nanoparticles with aggregation induced emission characteristics as well as methods for attaching biotin thereto for tumor cell targeting and long-term cell tracking. Additionally, dendrimers decorated with AIR fluorogens.
    Type: Application
    Filed: March 20, 2014
    Publication date: September 11, 2014
    Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Benzhong TANG, Wing Yip LAM, Min LI, Mathieu ARSENEAULT
  • Patent number: 8831111
    Abstract: Methods and systems for denoising embedded digital video decoding. Prediction and residue block of a current frame are obtained from motion vector. Variance of residue block is calculated using prior reference blocks, and a causal temporal linear minimum square error estimator is used to calculate a filter coefficient. The residue block is modified using the filter coefficient, and an output digital bitstream of blocks of pixels of the current frame is produced using the modified residue block and prior denoised prediction value of prior frames.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: September 9, 2014
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Oscar Chi Lim Au, Liwei Guo, Hon Wah Wong
  • Publication number: 20140247557
    Abstract: A phase-change chamber, a method for fabricating a phase-change chamber and a heat dissipation apparatus for electronic device cooling are disclosed. The phase-change chamber includes: a phase-change medium capable of transitioning between a plurality of phases; a first surface for transitioning a portion of the phase-change medium from a first phase into a second phase; a second surface for transitioning a portion of the phase-change medium from the second phase into the first phase; and at least one supporting member along the circumference of the first surface and the second surface for separating and enclosing the first surface and the second surface. The first surface is patterned on a first plate and includes regions of high and low affinity to the phase-change medium. The second surface is received on a second plate and comprises low affinity to the phase-change medium.
    Type: Application
    Filed: February 6, 2014
    Publication date: September 4, 2014
    Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Huihe Qiu, Zhen Sun, Xiaodan Chen, Bin Wang