Patents by Inventor King Chu

King Chu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9603571
    Abstract: A wearable electrocardiogram measurement device and a method for compressing an electrocardiogram are disclosed. A heart detection unit detects a heart activity status of a human body to obtain electrocardiogram data. A processor of a portable host proceeds with bandwidth decomposition and quantization by using quantization scales to obtain quantized results. An integer part of each quantized result is set as a quantized datum. A decimal portion of each quantized result is set as a truncated error datum. Each quantization scale is multiplied by a corresponding truncated error datum to obtain a product. If a distortion value obtained by adding the products fulfills a distortion default value range, the quantized data are encoded to obtain compressed electrocardiogram data for storage in a data storage unit of the host. If the distortion value does not fulfill the distortion default value range, an adjustment step is repeated.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: March 28, 2017
    Assignee: National Kaohsiung First University of Science and Technology
    Inventors: King-Chu Hung, Huan-Sheng Wang, Jui-Hung Hsieh, Je-Hung Liu, Pei-Jen Chang
  • Publication number: 20170055914
    Abstract: A wearable electrocardiogram measurement device and a method for compressing an electrocardiogram are disclosed. A heart detection unit detects a heart activity status of a human body to obtain electrocardiogram data. A processor of a portable host proceeds with bandwidth decomposition and quantization by using quantization scales to obtain quantized results. An integer part of each quantized result is set as a quantized datum. A decimal portion of each quantized result is set as a truncated error datum. Each quantization scale is multiplied by a corresponding truncated error datum to obtain a product. If a distortion value obtained by adding the products fulfills a distortion default value range, the quantized data are encoded to obtain compressed electrocardiogram data for storage in a data storage unit of the host. If the distortion value does not fulfill the distortion default value range, an adjustment step is repeated.
    Type: Application
    Filed: August 31, 2015
    Publication date: March 2, 2017
    Inventors: KING-CHU HUNG, HUAN-SHENG WANG, JUI-HUNG HSIEH, JE-HUNG LIU, PEI-JEN CHANG
  • Patent number: 8116706
    Abstract: To calibrate a bandpass filter, a received signal strength corresponding to a received communication channel is determined. A variable element of the bandpass filter is adjusted based on the received signal strength of the received communication channel to calibrate the bandpass filter.
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: February 14, 2012
    Assignee: Marvell International Ltd.
    Inventors: Patrick Clement, King Chu Tsai, Heinz Maeder
  • Publication number: 20060201697
    Abstract: A composite support for fabricating a prototype electrical circuit has a rectangular planar board with a plurality of rows and columns of double sided annular toroidal connection eyelets. The planar board is mounted on a rectangular support tray having a well. The connection eyelets of the planar board have a diameter of from 1.30 mm to 1.80 mm. A high temperature sheet material adhered to the entire undersurface of the planar board, which is pierced by leads of electrical components inserted into the connection eyelets. A spongy retainer block or a breadboard may also be located in the support tray well.
    Type: Application
    Filed: March 14, 2005
    Publication date: September 14, 2006
    Inventors: Eric Chan, King Chu
  • Publication number: 20060011461
    Abstract: Embodiments of a peripheral backlighting system for keyboards are shown and described, which include one or more light-emitting panels exterior to the keyswitches of the keyboard. The panels are preferably electroluminescent material or light-emitting chemical cells and surround at least two sides, and preferably all sides, of the actuation portion of a keyswitch or the space in which the actuation portion slides up and down during use. Alternatively, the panel(s) may extend substantially continuously between and underneath a plurality of keyswitches. The panels extend closely adjacent to the actuation portion or actuation path, or under the keyswitch, to be as far under the key cap as possible without extending into the keyswitch. Preferably, the keyswitch is translucent or partially translucent, and the housing plate over the light-radiant panels, if any, is at least partially translucent or transparent.
    Type: Application
    Filed: February 18, 2005
    Publication date: January 19, 2006
    Inventors: Sam Chan, King Chu, W. Church, Randall Krafft, W. Rector, Will Harwood
  • Publication number: 20050257110
    Abstract: A system for injecting noise signals onto power generated by a power source comprising: a voltage source; a device under test having a power input in operable communication with the noise introduction apparatus; and a noise introduction apparatus interposed between the power source and device under test in operable communication with the voltage source, the noise introduction apparatus comprising, a switching device configured to provide a low impedance conductive path when commanded, and a current limiting device in series with the switching device, the current limiting device configured to provide a low impedance conductivity for a selected current and a selected duration. The switching device and current limiting device cooperate to shunt the voltage source to the power input.
    Type: Application
    Filed: May 11, 2004
    Publication date: November 17, 2005
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Joseph Bogdanski, King Chu, William Lorenz, Tuan Ngo, Andrew Rybak, Kwok Soohoo, Gerard Weber, William Winkler
  • Publication number: 20050174723
    Abstract: An enclosure for an electronic device has a front opening and rear opening formed by a base casing and a U-shaped cover mounted together thereon. A plurality of modular plates with electrical components pre-mounted thereon are removably and interchangeably mounted at selected positions in the front opening and rear opening of the base casing. The modular plates have an extension bottom leg portion having a shape and configuration with a complementary to those of mounting openings formed in even spacings along the entire length of the edge portion of the base casing. The modular plates also have an upper extension lip engageable with elongated channels formed on an underside edge portion of the front edge and rear edge of the cover.
    Type: Application
    Filed: February 6, 2004
    Publication date: August 11, 2005
    Inventors: Eric Chan, King Chu
  • Publication number: 20050083214
    Abstract: Embodiments of a peripheral backlighting system for keyboards are shown and described, which include one or more light-emitting panels exterior to the keyswitches of the keyboard. The panels are preferably electroluminescent material and surround at least two sides, and preferably all sides, of the stem of a keyswitch or the space in which the stem slides up and down during use. Alternatively, the electroluminescent panel(s) may extend substantially continuously between and underneath a plurality of keyswitches. The panels extend closely adjacent to the stem or stem path, or under the keyswitch, to be as far under the key cap as possible without extending into the stem or cap of the keyswitch. The EL panels are preferably powered by the computer keyboard port, via voltage inverters. Preferably, the keyswitch is translucent or partially translucent, and the base plate over the EL panels, if any, is at least partially translucent or transparent.
    Type: Application
    Filed: July 20, 2004
    Publication date: April 21, 2005
    Inventors: Sam Chan, King Chu, W. Church, Randall Krafft