Patents by Inventor Andrew Chiu

Andrew Chiu 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).

  • Publication number: 20060023351
    Abstract: A magnetic write head for use in a data recording system having first and second magnetic pole, the first pole having a P1 pedestal. An electrically conductive coil passes through a space between the first and second poles for inducing a magnetic flux through the yoke formed by the first and second poles. A bi-layer insulation layer disposed between the poles includes a layer of photoresist for preventing voids and a layer of alumina formed thereover to provide a structural brace to prevent recession of the P1 pedestal during manufacturing operations such as soda blast.
    Type: Application
    Filed: July 30, 2004
    Publication date: February 2, 2006
    Inventors: Andrew Chiu, Edward Lee, John Yang, Michael Yang, Sue Zhang
  • Publication number: 20050286097
    Abstract: Automatic white balance of captured images can be performed based on a gray world assumption. Initially, a flat field gray image is captured for one or more reference illuminations. The statistics of the captured gray image are determined and stored for each reference illumination during a calibration process. For each subsequent captured image, the image is filtered to determine a subset of gray pixels. The gray pixels are further divided into a one or more gray clusters. The average weight of the one or more gray clusters is determined and a distance from the average weights to the reference illuminants is determined. An estimate of the illuminant is determined depending on the distances. White balance gains are applied to the image based on the estimated illuminant.
    Type: Application
    Filed: January 25, 2005
    Publication date: December 29, 2005
    Inventors: Szepo Hung, Ananthapadmanabhan Kandhadai, Andrew Chiu
  • Publication number: 20050275736
    Abstract: To improve the color performance, disclosed herein are advanced methods for improving chroma accuracy, by reducing the color difference between reproduced colors and human perceptual responses, as well as enhancing preferred colors. Chroma enhancement may be performed by selecting one of a plurality of chroma enhancement matrices (CEM), and converting a received color by multiplying it with the chroma enhancement matrix (or a matrix comprising the CEM). The matrix may be selected by mapping a received color value into a region and selecting the corresponding chroma enhancement matrix (or alternately, the corresponding parameters, from which color conversion may be performed). Additionally, enhancement may be adjusted for a variety of environments or preferences. For example, one of a plurality of sets of matrices may be selected in accordance with a desired mode. Optimization techniques for determining the desired chroma enhancement matrices for one or more modes are disclosed.
    Type: Application
    Filed: May 25, 2005
    Publication date: December 15, 2005
    Inventors: Andrew Chiu, Xiaoyun Jiang
  • Publication number: 20050200116
    Abstract: An electronic book reading apparatus, comprising means for receiving a book in an open position having a plurality of pages, memory means for storing the content of the book in digital form, magnetic detecting means for detecting at which page the book is open, and means for retrieving from the memory means digital content corresponding to the page and outputting the content as an audio signal.
    Type: Application
    Filed: March 4, 2005
    Publication date: September 15, 2005
    Applicant: Ngai Keung Metal & Plastic Manufactory Limited
    Inventor: Andrew Chiu
  • Patent number: 6925358
    Abstract: A toy robot system includes a toy robot and a surface over which the robot can move. The surface is constructed from a number of modules of various types that may be joined together. Each module (except for spacer modules) includes at least one track segment along which the robot may move. Each module is square and each track segment extends from the center of the module to one side. A code readable by the robot is provided at the beginning of each segment so that the robot knows what type of module it is entering, and a code is provided at the center of each module so that the robot can calculate its position.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: August 2, 2005
    Inventor: Shun Pui Andrew Chiu
  • Publication number: 20050106547
    Abstract: A learning aid adapted to identify an icon on an object, comprising a pointer means, a central processing unit, and a response generating means, wherein said pointer means includes an optical color detector adapted to detect color or colors of said icon when placed in close proximity thereof and wherein said response generating means is adapted to provide a response corresponding to said detected color or colors.
    Type: Application
    Filed: October 5, 2004
    Publication date: May 19, 2005
    Applicant: Ngai Keung Metal & Plastic Mfy. Ltd.
    Inventor: Andrew Chiu
  • Patent number: 6843894
    Abstract: A cathode current control system employing a current thief for use in electroplating a wafer is set forth. The current thief comprises a plurality of conductive segments disposed to substantially surround a peripheral region of the wafer. A first plurality of resistance devices are used, each associated with a respective one of the plurality of conductive segments. The resistance devices are used to regulate current through the respective conductive finger during electroplating of the wafer. Various constructions are used for the current thief and further conductive elements, such as fingers, may also be employed in the system. As with the conductive segments, current through the fingers may also be individually controlled. In accordance with one embodiment of the overall system, selection of the resistance of each respective resistance devices is automatically controlled in accordance with predetermined programming.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: January 18, 2005
    Assignee: Semitool, Inc.
    Inventors: Robert W. Berner, Joseph J. Fatula, Jr., Robert Hitzfeld, Richard Contreras, Andrew Chiu
  • Publication number: 20040167665
    Abstract: A toy robot system includes a toy robot and a surface over which the robot can move. The surface is constructed from a number of modules of various types that may be joined together. Each module (except for spacer modules) includes at least one track segment along which the robot may move. Each module is square and each track segment extends from the center of the module to one side. A code readable by the robot is provided at the beginning of each segment so that the robot knows what type of module it is entering, and a code is provided at the center of each module so that the robot can calculate its position.
    Type: Application
    Filed: February 26, 2003
    Publication date: August 26, 2004
    Inventor: Shun Pui Andrew Chiu
  • Publication number: 20040055879
    Abstract: A cathode current control system employing a current thief for use in electroplating a wafer is set forth. The current thief comprises a plurality of conductive segments disposed to substantially surround a peripheral region of the wafer. A first plurality of resistance devices are used, each associated with a respective one of the plurality of conductive segments. The resistance devices are used to regulate current through the respective conductive finger during electroplating of the wafer. Various constructions are used for the current thief and further conductive elements, such as fingers, may also be employed in the system. As with the conductive segments, current through the fingers may also be individually controlled. In accordance with one embodiment of the overall system, selection of the resistance of each respective resistance devices is automatically controlled in accordance with predetermined programming.
    Type: Application
    Filed: September 22, 2003
    Publication date: March 25, 2004
    Inventors: Robert W. Berner, Joseph J. Fatula, Robert Hitzfeld, Richard Contreras, Andrew Chiu
  • Patent number: 6627051
    Abstract: A cathode current control system employing a current thief for use in electroplating a wafer is set forth. The current thief comprises a plurality of conductive segments disposed to substantially surround a peripheral region of the wafer. A first plurality of resistance devices are used, each associated with a respective one of the plurality of conductive segments. The resistance devices are used to regulate current through the respective conductive finger during electroplating of the wafer. Various constructions are used for the current thief and further conductive elements, such as fingers, may also be employed in the system. As with the conductive segments, current through the fingers may also be individually controlled. In accordance with one embodiment of the overall system, selection of the resistance of each respective resistance devices is automatically controlled in accordance with predetermined programming.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: September 30, 2003
    Assignee: Semitool, Inc.
    Inventors: Robert W. Berner, Joseph J. Fatula, Jr., Robert Hitzfeld, Richard Contreras, Andrew Chiu
  • Patent number: 6584146
    Abstract: Systems and methods including a wireless communications device that consists of a collection of one or more processing elements, optionally forming a computer cluster, that together carry out the functions necessary to exchange information over a plurality of wireless communications links, wherein the communication links may employ different communication protocols, respectively. The systems and methods combine two techniques: the use of multiple flexible processing elements, and a design in which each of the elements can carry out any part of the processing performed by the device, including without limitation the physical, MAC, link, network, transport, and presentation layer processing.
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: June 24, 2003
    Assignee: Vanu, Inc.
    Inventors: Vanu Bose, John Chapin, Andrew Chiu
  • Patent number: 6500316
    Abstract: An apparatus for rotary cathode electroplating having a head assembly, a substrate/thief assembly having a thieving ring which includes a number of individually chargeable segments, and a secondary induction assembly including a secondary core and a secondary winding. A motor drives the substrate/thief assembly to rotate relative to the head assembly. A controller directs electrical charge to each of the individually chargeable segments of the thieving ring. An electrical storage device stores electrical energy which is to be supplied to the controller. A charging apparatus induces a magnetic flux which induces an alternating current in the secondary winding of the secondary induction assembly. A converter converts the induced alternating current to direct current, which is then stored on the electrical storage device.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: December 31, 2002
    Assignee: International Business Machines Corporation
    Inventors: Joseph J. Fatula, Jr., Robert W. Hitzfeld, Richard Contreras, Guillermo Prada-Silva, Andrew Chiu, Rainer Schieferstein
  • Patent number: 6437472
    Abstract: A magnetic induction device having at least one secondary induction assembly including a secondary winding is mounted on a rotary element. A magnetic flux is induced the secondary induction assembly, causing an induced secondary alternating current in the secondary winding of the secondary induction assembly. The secondary alternating current is converting to direct current and is stored in an electrical storage device.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: August 20, 2002
    Assignee: International Business Machines Corporation
    Inventors: Joseph J. Fatula, Jr., Robert W. Hitzfeld, Richard Contreras, Guillermo Prada-Silva, Andrew Chiu, Rainer Schieferstein
  • Publication number: 20020035633
    Abstract: Systems and methods including a wireless communications device that consists of a collection of one or more processing elements, optionally forming a computer cluster, that together carry out the functions necessary to exchange information over a plurality of wireless communications links, wherein the communication links may employ different communication protocols, respectively. The systems and methods combine two techniques: the use of multiple flexible processing elements, and a design in which each of the elements can carry out any part of the processing performed by the device, including without limitation the physical, MAC, link, network, transport, and presentation layer processing.
    Type: Application
    Filed: February 12, 2001
    Publication date: March 21, 2002
    Inventors: Vanu Bose, John Chapin, Andrew Chiu
  • Publication number: 20020003084
    Abstract: A cathode current control system employing a current thief for use in electroplating a wafer is set forth. The current thief comprises a plurality of conductive segments disposed to substantially surround a peripheral region of the wafer. A first plurality of resistance devices are used, each associated with a respective one of the plurality of conductive segments. The resistance devices are used to regulate current through the respective conductive finger during electroplating of the wafer. Various constructions are used for the current thief and further conductive elements, such as fingers, may also be employed in the system. As with the conductive segments, current through the fingers may also be individually controlled. In accordance with one embodiment of the overall system, selection of the resistance of each respective resistance devices is automatically controlled in accordance with predetermined programming.
    Type: Application
    Filed: July 20, 2001
    Publication date: January 10, 2002
    Inventors: Robert W. Berner, Joseph J. Fatula, Robert Hitzfeld, Richard Contreras, Andrew Chiu
  • Patent number: 6322674
    Abstract: A cathode current control system employing a current thief for use in electroplating a wafer is set forth. The current thief comprises a plurality of conductive segments disposed to substantially surround a peripheral region of the wafer. A first plurality of resistance devices are used, each associated with a respective one of the plurality of conductive segments. The resistance devices are used to regulate current through the respective conductive finger during electroplating of the wafer. Various constructions are used for the current thief and further conductive elements, such as fingers, may also be employed in the system. As with the conductive segments, current through the fingers may also be individually controlled. In accordance with one embodiment of the overall system, selection of the resistance of each respective resistance devices is automatically controlled in accordance with predetermined programming.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: November 27, 2001
    Assignee: Semitool, Inc.
    Inventors: Robert W. Berner, Joseph J. Fatula, Jr., Robert Hitzfeld, Richard Contreras, Andrew Chiu
  • Patent number: 6296407
    Abstract: The present invention provides a low profile stackable Internet appliance printer for use with a television receiver and monitor and responsive to commands from a remote device for printing user desired information. The printer has a box like rectangular shaped housing conforming in size to that of conventional electronic audio video components such as cable boxes, DVD players, amplifiers, video tapes and the like to facilitate the stacking of the printer with such other components. A base member having defines an interior cavity for receiving a removable combination input/output tray cassette and supports from below a low profile printbar including its feed motor, drive motor, associated electronic drivers for controlling the firing of low profile printheads, carriage movement and the moving of paper to print user desired images.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: October 2, 2001
    Assignee: Hewlett-Packard Company
    Inventors: Kerry N. McKay, Junji Yamamoto, James M Osmus, Caroline Zepeda, Andrew Chiu
  • Patent number: 6278210
    Abstract: The method and apparatus for supplying power to a rotary element by magnetic induction. A magnetic induction device having at least one secondary induction assembly including a secondary winding is mounted on the rotary element. A magnetic flux is induced the secondary induction assembly, causing an induced alternating current in the secondary winding of the secondary induction assembly. The secondary alternating current is converting to direct current and is stored in an electrical storage device. A rotary cathode plater is disclosed as a particular application of the apparatus by which power is transferred to a storage battery or high capacity capacitor, without the use of wires.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: August 21, 2001
    Assignee: International Business Machines Corporation
    Inventors: Joseph J. Fatula, Jr., Robert W. Hitzfeld, Richard Contreras, Guillermo Prada-Silva, Andrew Chiu, Rainer Schieferstein
  • Patent number: 6001235
    Abstract: A rotary plater and method of plating are provided which improve the uniformity of plating across a plating surface of a workpiece. A plating solution distribution device is located in a plating cup between an anode and a cathode in a spaced relationship therebetween and is centered about a vertical axis of the plating cup. A motor is provided for relatively rotating the cathode and the plating solution distribution device with respect to one another. The plating solution distribution device distributes the plating solution over the plating surface at a distribution rate which increases radially outwardly from the vertical axis. With this arrangement the volume of plating solution at the outer periphery of the plating surface is enriched with ions to promote plating uniformity.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: December 14, 1999
    Assignee: International Business Machines Corporation
    Inventors: David M. Arken, Andrew Chiu, Joseph John Fatula, Jr., Robert William Hitzfield, Wen-Chien David Hsiao, Yiping Hsiao
  • Patent number: 5926350
    Abstract: A dual gap horizontal thin film inductive head is provided which writes wide and reads narrow so as to avoid noise problems when reading an information track on a magnetic medium. The head has first and second gap layers between first and second horizontal pole tips. The pole tips and the corresponding pole pieces of the head are constructed of a high magnetic moment material, such as NiFe (Permalloy). The first gap layer is constructed of a magnetic insulator, such as tungsten, and the second gap layer is constructed of a low magnetic moment material, such as NiFeCr. Accordingly, the magnetic moment of the second gap layer is lower than the magnetic moment of the first and second pole tips and the corresponding first and second pole pieces. During recording both gap layers function as a gap because the second gap layer is saturated and behaves as a magnetic insulator.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: July 20, 1999
    Assignee: International Business Machines Corporation
    Inventors: Andrew Chiu, Cherngye Hwang, Randall George Simmons