Patents by Inventor Sui-hing Leung

Sui-hing Leung 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: 8714731
    Abstract: An inkjet ink and an intermediate transfer medium for inkjet printing are disclosed herein. During inkjet printing, the inkjet ink forms ink drops having a contact angle (?) of less than or equal to 50° on the intermediate transfer medium, where the contact angle (?) reduces or substantially eliminates coalescence of adjacent ink drops. The contact angle (?) may be obtained by controlling a property of the inkjet ink and/or a property of the surface of the intermediate transfer medium.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 6, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sui-hing Leung, Hou T. Ng
  • Publication number: 20120105525
    Abstract: An inkjet ink (18) and an intermediate transfer medium (22) for inkjet printing are disclosed herein. During inkjet printing, the inkjet ink (18) forms ink drops (D1, D2) having a contact angle (?) of less than or equal to 50° on the intermediate transfer medium (22), where the contact angle (?) reduces or substantially eliminates coalescence of adjacent ink drops (D1, D2). The contact angle (?) may be obtained by controlling a property of the inkjet ink (18) and/or a property of the surface (20) of the intermediate transfer medium (22).
    Type: Application
    Filed: July 31, 2009
    Publication date: May 3, 2012
    Inventors: Sui-hing Leung, Hou T. Ng
  • Patent number: 7964443
    Abstract: A method of forming a crossed wire molecule device comprising a plurality of bottom electrodes, a plurality of top electrodes crossing the bottom electrodes at a non-zero angle, and a self-assembled molecular film chemically bonded to a surface of each of the bottom electrodes is provided. The self-assembled molecular film includes one or more defect sites and a plurality of active device molecules, each of the plurality of active device molecules including a molecular switching moiety having a self-assembling connecting group at one end of the moiety and a linking group at an opposed end of the moiety. The polymeric material chemically bonds to at least some of the linking groups of the plurality of active device molecules, causing the formation of the self-assembled molecular layer covering the plurality of active device molecules and the defect site(s). A molecular switching device is also provided.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: June 21, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sean X. Zhang, Sui-Hing Leung
  • Patent number: 7782408
    Abstract: A three-dimensional molecular assembly and method of formation are provided. The molecular assembly is formed on a substrate. The molecular assembly comprises: a first monolayer of seed molecules for initiating self-assembled molecular growth, the first monolayer formed on the substrate; a second monolayer of active molecules comprising a plurality of rotor and stator moieties, with one rotor moiety supported between two stator moieties, the second monolayer of active molecules formed on the first monolayer of seed molecules, with a one-to-one correspondence between molecules in the first monolayer and the second monolayer; a third monolayer of spacer molecules, formed on the second monolayer of active molecules, with a one-to-one correspondence between molecules in the second monolayer and the third monolayer; and a plurality of alternating second monolayers and third monolayers having the one-to-one correspondence.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: August 24, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Xiao-An Zhang, Sui-Hing Leung, Kent D. Vincent, Zhang-Lin Zhou
  • Publication number: 20100171114
    Abstract: A method of forming a crossed wire molecule device comprising a plurality of bottom electrodes, a plurality of top electrodes crossing the bottom electrodes at a non-zero angle, and a self-assembled molecular film chemically bonded to a surface of each of the bottom electrodes is provided. The self-assembled molecular film includes one or more defect sites and a plurality of active device molecules, each of the plurality of active device molecules including a molecular switching moiety having a self-assembling connecting group at one end of the moiety and a linking group at an opposed end of the moiety. The polymeric material chemically bonds to at least some of the linking groups of the plurality of active device molecules, causing the formation of the self-assembled molecular layer covering the plurality of active device molecules and the defect site(s). A molecular switching device is also provided.
    Type: Application
    Filed: March 18, 2010
    Publication date: July 8, 2010
    Inventors: Sean X. Zhang, Sui-Hing Leung
  • Patent number: 7709290
    Abstract: A method includes chemically bonding a polymeric material to a self-assembled molecular film that is chemically bonded to a surface of a substrate. The self-assembled molecular film includes one or more defect sites and a plurality of active device molecules, each of the plurality of active device molecules including a molecular switching moiety having a self-assembling connecting group at one end of the moiety and a linking group at an opposed end of the moiety. The polymeric material chemically bonds to at least some of the linking groups of the plurality of active device molecules, causing the formation of the self-assembled molecular layer covering the plurality of active device molecules and the defect site(s).
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: May 4, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sean X. Zhang, Sui-Hing Leung
  • Patent number: 7496216
    Abstract: A system and method of capturing a skin print from skin having ridges and valleys. A skin print sensor having a return/supply contact and a plurality of contact pads is provided. A finger is applied to the skin print sensor and data is stored representative of contact pads in contact with skin ridges.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: February 24, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sui-hing Leung, Sean Xiao-An Zhang, Chung Ching Yang
  • Publication number: 20060285728
    Abstract: A system and method of capturing a skin print from skin having ridges and valleys. A skin print sensor having a return/supply contact and a plurality of contact pads is provided. A finger is applied to the skin print sensor and data is stored representative of contact pads in contact with skin ridges.
    Type: Application
    Filed: June 21, 2005
    Publication date: December 21, 2006
    Inventors: Sui-hing Leung, Sean Zhang, Chung Yang
  • Publication number: 20060183165
    Abstract: A sensing unit comprises a chemical sensing element and a transducer operatively associated therewith, wherein the chemical sensing element comprises at least one receptor for receiving a molecule of an analyte. An array of chemical sensing units is also provided, together with a chemical sensor system and a method of detecting and identifying the analyte.
    Type: Application
    Filed: February 15, 2005
    Publication date: August 17, 2006
    Inventors: Sean Zhang, Sui-Hing Leung
  • Publication number: 20060001020
    Abstract: A method includes chemically bonding a polymeric material to a self-assembled molecular film that is chemically bonded to a surface of a substrate. The self-assembled molecular film includes one or more defect sites and a plurality of active device molecules, each of the plurality of active device molecules including a molecular switching moiety having a self-assembling connecting group at one end of the moiety and a linking group at an opposed end of the moiety. The polymeric material chemically bonds to at least some of the linking groups of the plurality of active device molecules, causing the formation of the self-assembled molecular layer covering the plurality of active device molecules and the defect site(s).
    Type: Application
    Filed: June 30, 2004
    Publication date: January 5, 2006
    Inventors: Sean Zhang, Sui-Hing Leung
  • Patent number: 6970724
    Abstract: The present invention pertains to an apparatus and method for automatically disabling cell phone ringing and/or cell phone beeping. An RF transmitter is used to transmit an RF non-audible mode or control signal. Upon receiving the non-audible mode or control signal, the cell phone and/or beeper automatically disables its audible alarm. Users are notified of incoming calls and/or pages by means of blinking lights or vibration. When the user no longer receives the non-audible mode or control signal or upon the elapse of a fixed, pre-determined amount of time, the cell phone and/or beeper automatically reverts back to its normal mode of operation whereby incoming calls and pages are indicated by cell phone ringing and pager beeping.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: November 29, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Sui-hing Leung
  • Patent number: 6942312
    Abstract: Methods and apparatus for packing, including single pixel data strings, and playback tracking of informative data, e.g., audio signals, associated with graphics. To maximize the signal-to-noise ratio during data recovery, a Read sensor is kept substantially on-center of each data block throughout reading. A Print-and-Read ink-jet embodiment carriage mechanism in conjunction with the paper feed mechanism keeps the Read sensor on track center as misalignment information has been determined beforehand or in real time for active track servoing. Additional functionalities are incorporated in scanning ink-jet class of printers so that they can further operate as informative data recovery or retrieval systems for digitized data on graphical data images. In another embodiment, a digital camera itself is provided with additional functionalities to operate as a recovery and playback device for prints containing informative data.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: September 13, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sui-hing Leung, Xiao-An Zhang
  • Publication number: 20050012771
    Abstract: Methods and apparatus for packing, including single pixel data strings, and playback tracking of informative data, e.g., audio signals, associated with graphics. To maximize the signal-to-noise ratio during data recovery, a Read sensor is kept substantially on-center of each data block throughout reading. A Print-and-Read ink-jet embodiment carriage mechanism in conjunction with the paper feed mechanism keeps the Read sensor on track center as misalignment information has been determined beforehand or in real time for active track servoing. Additional functionalities are incorporated in scanning ink-jet class of printers so that they can further operate as informative data recovery or retrieval systems for digitized data on graphical data images. In another embodiment, a digital camera itself is provided with additional functionalities to operate as a recovery and playback device for prints containing informative data.
    Type: Application
    Filed: July 16, 2003
    Publication date: January 20, 2005
    Inventors: Sui-Hing Leung, Xiao-An Zhang
  • Publication number: 20050008321
    Abstract: A three-dimensional molecular assembly and method of formation are provided. The molecular assembly is formed on a substrate. The molecular assembly comprises: a first monolayer of seed molecules for initiating self-assembled molecular growth, the first monolayer formed on the substrate; a second monolayer of active molecules comprising a plurality of rotor and stator moieties, with one rotor moiety supported between two stator moieties, the second monolayer of active molecules formed on the first monolayer of seed molecules, with a one-to-one correspondence between molecules in the first monolayer and the second monolayer; a third monolayer of spacer molecules, formed on the second monolayer of active molecules, with a one-to-one correspondence between molecules in the second monolayer and the third monolayer; and a plurality of alternating second monolayers and third monolayers having the one-to-one correspondence.
    Type: Application
    Filed: July 7, 2003
    Publication date: January 13, 2005
    Inventors: Xiao-An Zhang, Sui-Hing Leung, Kent Vincent, Zhang-Lin Zhou
  • Publication number: 20030032457
    Abstract: The present invention pertains to an apparatus and method for automatically disabling cell phone ringing and/or cell phone beeping. An RF transmitter is used to transmit an RF non-audible mode or control signal. Upon receiving the non-audible mode or control signal, the cell phone and/or beeper automatically disables its audible alarm. Users are notified of incoming calls and/or pages by means of blinking lights or vibration. When the user no longer receives the non-audible mode or control signal or upon the elapse of a fixed, pre-determined amount of time, the cell phone and/or beeper automatically reverts back to its normal mode of operation whereby incoming calls and pages are indicated by cell phone ringing and pager beeping.
    Type: Application
    Filed: August 10, 2001
    Publication date: February 13, 2003
    Inventor: Sui-Hing Leung
  • Patent number: 5734680
    Abstract: An analog, fully integrated, partial response maximum likelihood (PRML) read channel utilizing a high-performance analog delay line, an analog adaptive equalizer and an analog Viterbi detector is provided, resulting in saved space, performance gains, and lower power consumption. For signal detection and reconstruction used in read operations, the partial response maximum likelihood (PRML) read channel includes a variable gain amplifier coupled to a lowpass filter for input to an adaptive analog equalizer. The adaptive analog equalizer comprises an analog delay line and an analog feedforward equalizer (FFE). An analog Viterbi detector employs maximum-likelihood sequence estimation (MLSE) techniques to performs the signal detection function. A decoder/descrambler produces a final reconstructed signal. The analog implementation of a partial response maximum likelihood (PRML) read channel also includes a scrambler/encoder coupled to a write precompensation circuit for output to a separate write head.
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: March 31, 1998
    Assignee: Hewlett-Packard Co.
    Inventors: Charles E. Moore, Richard A. Baumgartner, Travis N. Blalock, Thomas M. Walley, Robert A. Zimmer, Rajeev Badyal, Li Ching Tsai, Larry S. Metz, Sui-Hing Leung, James S. Ignowski, Kenneth R. Stafford, Ran-Fun Chiu, Richard A. Baugh
  • Patent number: 5150379
    Abstract: Signal processing system for reducing error due to intersymbol interference and other noise, the system having a feedforward equalizer adaptively responsive to a first error signal (e.sub.n) and having a noise decorrelator adaptively responsive to an adjusting signal (q.sub.n) derived from the first error signal. In a preferred embodiment the source of the signal (S.sub.n) is a magnetic disk having encoded data thereon. The feedforward equalizer reduces intersymbol interference. A decision device connected to the feedforward equalizer is coupled to connect the signal (X.sub.n) from the feedforward equalizer into a stream (d.sub.n) of data samples having a limited number of predetermined signal levels. The first error signal is the difference between signal levels of data samples in the stream and the output of the feedforward equalizer. The first error signal is utilized to adjust the feedforward equalizer and to provide an input to the noise decorrelator.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: September 22, 1992
    Assignee: Hewlett-Packard Company
    Inventors: Richard A. Baugh, Ran-Fun Chiu, Darlene L. Hart, Merban Jam, Sui-hing Leung