Patents Assigned to Hong Kong Polytechnic University
  • ELECTRONIC STIMULATION TEXTILE FOR TRADITIONAL CHINESE MEDICINE THERAPY
    Publication number: 20110077728
    Abstract: A textile for providing traditional Chinese medicine therapy to a wearer using electronic stimulation includes at least two conductive paths that are made from conductive textile material, the conductive paths are separated by nonconductive textile material, at least one pair of electrodes attach to the conductive paths corresponding to specific part of body or acupoints according to traditional Chinese medicine theory, and an electronic stimulation signal controller configured to conduct electronic stimulation signals to the electrodes via the conductive paths.
    Type: Application
    Filed: September 29, 2009
    Publication date: March 31, 2011
    Applicant: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Li Li, Wai Man Raymond AU, Kwok Shing Thomas Wong, Wai Yee Joanne Chung, Kam Man Wan, Sai Ho Wan
  • Laser emitting material, method for making the same and use thereof
    Patent number: 7912108
    Abstract: A solid-state laser emitting material for use in conjunction with a light source includes a polymer matrix functioning as host materials, containing laser dye of rhodamine 590 or rhodamine 610 as gain materials and nano-submicron particles as scatters therein. The lowest lasing threshold of the laser emitting material is approximately 5 mJ/cm2 for 585 nm emission and 2 mJ/cm2 for 630 nm emission.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: March 22, 2011
    Assignee: The Hong Kong Polytechnic University
    Inventors: Xiaoming Tao, Xiaohong Sun, Jianguo Deng, Kai-Cheong Kwan
  • Bone reposition device, method and system
    Patent number: 7881771
    Abstract: A bone reposition device includes first and second bone supports for supporting first and second portions of a fracture or osteotomize bone about a fracture or osteotomize site, a plurality of sequentially connected connection members and a plurality of joints each with at least a pair of adjacent parts for connecting the connection members therebetween and to the first and second bone supports. The plurality of joints includes at least six joints, each of which possesses one degree of freedom and allows controllable relative rotation or translation of said pair of adjacent parts about one of three axes respectively.
    Type: Grant
    Filed: August 3, 2005
    Date of Patent: February 1, 2011
    Assignee: The Hong Kong Polytechnic University
    Inventors: Terry K. K. Koo, Arthur F. T. Mak, Edmund Y. S. Chao
  • Method of enhancing moisture management and providing negative ion properties to fabric materials
    Patent number: 7879404
    Abstract: The present invention relates to a method of enhancing the negative ion properties of a material and enhance its moisture management properties if necessary. The method of the present invention teaches the determination of the moisture properties of a material, development of a negative ion agent, and the application of that agent to the material, such steps leading to a material possessing negative ion properties and good moisture management.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: February 1, 2011
    Assignee: The Hong Kong Polytechnic University
    Inventors: Yi Li, Junyan Hu, Qingwen Song, Yong Fan Mao
  • THREE-DIMENSIONAL (3D) ULTRASOUND IMAGING SYSTEM FOR ASSESSING SCOLIOSIS
    Publication number: 20110021914
    Abstract: A three-dimensional (3D) ultrasound imaging system (10) for assessing scoliosis, the system (10) comprising: an ultrasound scanner (11) to capture ultrasound images; a spatial sensor (13) to record the position and orientation of the captured ultrasound images; and a software module (21) to mark features of vertebra in the captured ultrasound images, and the marked features (41) are connected with lines (42) in order to calculate angles and distances between the marked features (41) for the calculation of the Cobb angle and spinal rotation angle based on the calculated angles and distances; wherein the marked features (41) are a reflection of the surfaces of the vertebra.
    Type: Application
    Filed: July 27, 2009
    Publication date: January 27, 2011
    Applicant: The Hong Kong Polytechnic University
    Inventors: Yongping Zheng, James Chung Wai Cheung
  • Detection System for Assisting A Driver When Driving A Vehicle
    Publication number: 20100328055
    Abstract: A detection system (5) for assisting a driver when driving a vehicle, the system (5) comprising: a plurality of image capturing devices (98) mounted to the vehicle to capture images of the external environment of the vehicle; an image processing module (95) to identify potential hazards in real-time from the captured images and to superimpose information of the external environment relating to the identified potential hazards; and at least one display device (92) to display images processed by the image processing module in real-time; wherein the superimposed information is provided in an area of the display device (92) to ensure visual clarity of the images of the external environment.
    Type: Application
    Filed: June 30, 2009
    Publication date: December 30, 2010
    Applicant: The Hong Kong Polytechnic University
    Inventors: Bernard Cheuk Mun Fong, Wan Chi Siu
  • SYSTEM AND METHOD FOR DETERMINING THE PERFORMANCE OF A WEARABLE ELECTRODE
    Publication number: 20100321028
    Abstract: A system (100) for determining the performance of a wearable electrode, the system (100) comprising: a container (37) of liquid to simulate a static or dynamic environment for the electrode; a measurement module (2) to analyse and record predetermined properties of the electrode in response to passing an electrical current through the liquid during operation in the simulated environment to determine the performance of the electrode.
    Type: Application
    Filed: June 18, 2009
    Publication date: December 23, 2010
    Applicant: The Hong Kong Polytechnic University
    Inventors: Xiao-ming Tao, Rong-xin Wang, Xin-sheng Li, Hao Liu
  • Strain sensor
    Patent number: 7854173
    Abstract: A strain sensor (10) for measuring strain greater than 10%, the sensor (10) comprising: an upper polydimethylsiloxane (PDMS) substrate (20) having measurement electrodes (90) extending therethrough; a lower PDMS substrate (30) bonded to a lower surface of the upper PDMS substrate (20), and an upper surface of the lower PDMS substrate (30) having a patterned portion (50); and a conductive fluid (70) contained within the patterned portion (50) in contact with the measurement electrodes (90).
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: December 21, 2010
    Assignee: The Hong Kong Polytechnic University
    Inventors: Ching-Hsiang Cheng, Chen Chao, Yun Zhu
  • Method of industrially producing yarn at a lower twist multiplier for textile products
    Patent number: 7841161
    Abstract: The present invention relates to a machine, a system, and textiles resulting from an industrially produced yarn, created through the incorporation of a linear false twisting device and two lappets positioned to affect a yarn during drafting. The invention results in a yarn having a low twist multiplier. The textiles products created from the produced yarn exhibit a soft feel without requiring the use of chemical treatments.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: November 30, 2010
    Assignees: The Hong Kong Polytechnic University, Central Textiles (Hong Kong) Ltd.
    Inventors: Chi Ping Cheng, Allan Ki Luk Chick, Xiao-ming Tao
  • METHOD FOR OPTIMIZING RFID DEPLOYMENT AND RFID DEPLOYMENT OPTIMIZER OF USE THEREOF
    Publication number: 20100289621
    Abstract: A method for optimizing the deployment of RFID apparatus, and a RFID deployment optimizer of use thereof are provided. The method includes the steps: A. analyzing the interrogation zone where the RFID apparatus are deployed, B. identifying the readability o RFID tag associated with different sets of placement on a target object inside the interrogation zone, and C. selecting the best deployment alternative based on the analysis result of the interrogation zone attained in the step A and all the readabilities of RFID tag associated with different sets of placement identified in the step B.
    Type: Application
    Filed: December 27, 2007
    Publication date: November 18, 2010
    Applicant: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Siu Keung Kwok, Chi Fai Cheung, Hing Choi Tsang, Wing Bun Lee, Burly K. Tan, Pui Him Ng, Sze Kit Ho
  • High temperature sustainable fiber bragg gratings
    Patent number: 7835605
    Abstract: An optical fiber 200 with a high thermal resistance fiber Bragg grating (FBG) 130. Compared to existing FBG's, the invention provides greatly enhanced thermal stability, being stable up to 1200° C. The grating reflectivity and resonant wavelength are maintained for extended duration at high temperatures. The FBG is thus suitable in high temperature sensors. The high thermal resistance of the FBG is obtained in a method of pre-annealing the optical fiber 105 at high temperature prior to inscribing the FBG. The high thermal resistance is optionally enhanced in a post-FBG creation step of heat treating the optical fiber 105 and FBG.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: November 16, 2010
    Assignee: Hong Kong Polytechnic University
    Inventors: Dongning Wang, Yuhua Li, Jian Lu
  • Method and apparatus for measuring oscillation amplitude of an ultrasonic device
    Patent number: 7819013
    Abstract: An apparatus and method for detecting the oscillation amplitude of a bonding tool includes a sensing unit disposed adjacent to and at a distance from the bonding tool. The sensing unit includes a pair of electrodes, a piezoelectric sensing layer located between the pair of electrodes, and a membrane associated with the piezoelectric sensing layer. The piezoelectric sensing layer becomes sensitive to ultrasonic vibrations and generates electrical voltage signals after being activated by a poling process. An optional pre-amplifier is used to amplify the signals generated from the sensing unit, and an oscilloscope is used to further process the signals.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: October 26, 2010
    Assignee: The Hong Kong Polytechnic University
    Inventors: Helen Lai Wa Chan, Tin Yan Lam, Chen Chao, Kin Wing Kwok
  • Filter with better performance by minimizing clogging
    Patent number: 7803273
    Abstract: A filter comprises at least one filtration unit with a filtration passage having an inlet and an outlet, wherein the filtration unit includes at least one groove formed in an inlet side surface of the filtration unit, said at least one groove extending to the inlet and dimensioned to hold back substances which may clog the filtration passage, by means of upper edges of said at least one groove. According to the present invention, by forming at least one groove in an inlet side surface of the filtration unit, the filtration passages of the filter can be effectively prevented from being clogged.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: September 28, 2010
    Assignee: The Hong Kong Polytechnic University
    Inventor: K. W. Michael Siu
  • Method and apparatus for ultrasound imaging and elasticity measurement
    Publication number: 20100240994
    Abstract: A method for performing ultrasound imaging and elasticity measurement, the method includes scanning an object to obtain a B-mode ultrasound image, selecting an A-mode signal from the B-mode ultrasound image, transmitting a high frame rate ultrasound signal, by a selected group of ultrasound transducers, at the selected A-mode signal location, forming a transient M-mode image based on the high frame rate ultrasound signal, enhancing propagation trace of shear wave based on the transient M-mode image, calculating elasticity of the object based on the propagation trace and displaying result, and displaying, simultaneously, the B-mode ultrasound image and the transient M-mode measurement result.
    Type: Application
    Filed: March 23, 2009
    Publication date: September 23, 2010
    Applicant: The Hong Kong Polytechnic University
    Inventor: Yongping Zheng
  • Voltage dip and undervoltage compensator
    Patent number: 7800349
    Abstract: The present invention relates a system for compensating for a voltage dip and undervoltage containing a primary side and secondary side transformer, a voltage dip/swell detector, and a level detector/switch selector device, wherein the secondary side of the transformer possesses a minimally sufficient number of taps to allow the system to be modified to meet supply voltage dips. The system, in particular, allows for long term compensation of voltage dips and quick adjustment of load voltage, usually within one cycle. Methods of using the present invention are also presented.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: September 21, 2010
    Assignee: The Hong Kong Polytechnic University
    Inventors: Kai Ming Tsang, Wai Lok Chan
  • Temperature-compensated fibre optic strain gauge
    Patent number: 7796844
    Abstract: A temperature-compensated fibet optic strain gauge (10) for measuring strain of a host structure (5), the strain gauge (10) comprising: a mount (20) having a void (19) separating a first section (17) from a second section (18); a first fiber Bragg grating (FBG) (30); a second fiber Bragg grating (FBG) (40); and removable bridging portions (24) adjacent to the void (19) to connect the first section (17) to the second section (18), the bridging portions (24) being removed after the mount (20) is operatively attached to the host structure (5); wherein a right-side failure proof feature is provided by detecting whether a reflection wavelength reverts to an original Bragg wavelength of the first FBG (40) to indicate whether the first FBG (40) has broken.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: September 14, 2010
    Assignees: The Hong Kong Polytechnic University, Mass Transit Railway Corporation Limited
    Inventors: Hwa Ywa Tam, Siu Lau Ho, Shun Yee Liu, Kang Kuen Lee, Tony Kar Yun Lee, Chun Cheong Hon, Hing Keung Chan, Aiken Yiu Ming Tam
  • Data structure and system for IP address lookup and IP address lookup system
    Patent number: 7797348
    Abstract: A tree data structure for storing strings of searchable data divided into substrings has at least one first type node that has a substring associated with it and at least one second type node that does not having a substring associated with it. A second type node is directly linked to a first type node by a fail transition. A first type node is directly linked to a second type node by a match transition. An IP address lookup system has memory for storing a tree data structure and a controller for storing and loading an incoming IP address. The system has a finite state machine having three stages including a first stage for loading the IP address and performing a length calculation, a second stage for searching the data structure to find a match, and a third stage for determine the next-hop address index.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: September 14, 2010
    Assignee: The Hong Kong Polytechnic University
    Inventors: Robert Wing Pong Luk, Wai Tak Wong
  • Hollow-core photonic bandgap fiber polarizer
    Patent number: 7796854
    Abstract: A hollow-core photonic bandgap fiber polarizer may include a core, an inner cladding surrounding the core, the inner cladding including a plurality of capillaries, and an outer cladding at least partially surrounding the inner cladding. A section of the capillaries distal to the core is asymmetric relative to a section of the capillaries proximal to the core.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: September 14, 2010
    Assignee: The Hong Kong Polytechnic University
    Inventors: Wei Jin, Haifeng Xuan
  • LED Automotive Fog Lamp
    Publication number: 20100226143
    Abstract: A fog lamp may include a Lambertian LED, a collimating lens encompassing the Lambertian LED, a collimating surface including a total internal reflective surface and encompassing the collimating lens, and a corrugated surface attached to the collimating surface at an acute angle with respect to an optic axis of the corrugated surface.
    Type: Application
    Filed: March 6, 2009
    Publication date: September 9, 2010
    Applicant: HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Chi Fai Cheung, Sandy To, Wing Bun Lee, Jin Bo Jiang, Wen Kui Wang
  • COMPOSITE STEEL PLATE AND METHOD OF MAKING A COMPOSITE STEEL PLATE
    Publication number: 20100227192
    Abstract: A composite steel plate includes at least two steel sheets rolled to form a plate. One of the sheets has a composition that varies in a depthwise direction, between nanocrystalline and micron grained. The plate is made by treating a steel sheet to produce a composition in the sheet that varies in a depthwise direction of the sheet between nanocrystalline and micron grained, stacking the treated sheet with at least one other steel sheets and rolling the stacked sheets to form the plate.
    Type: Application
    Filed: March 9, 2009
    Publication date: September 9, 2010
    Applicant: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Jian Lu, Junbao Zhang, Aiying Chen