Patents by Inventor Wayne Leung

Wayne 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: 11907789
    Abstract: A clasp device adapted for use with a wearable device including a main portion and at least one resiliently deformable arm extended from the main portion along a curvature and configured to be switchable between a normal state and a deformed state; wherein in the normal state a free end of the deformable arm is separated from an opposed end of the main portion a first distance and configured to form a first cavity or passage with the main portion for receiving or engaging with the wearable device; while in the deformed state the free end of the deformable arm is resiliently deformed to enable it to be separated from the opposed end of the main portion a second distance and configured to form a deformable second cavity or passage with the main portion for enabling insertion or removal of the wearable device into or from the clasp device.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: February 20, 2024
    Inventor: Ka Wai Wayne Leung
  • Publication number: 20210256342
    Abstract: A clasp device adapted for use with a wearable device comprising a main portion and at least one resiliently deformable arm extended from the main portion along a curvature and configured to be switchable between a normal state and a deformed state; wherein in the normal state a free end of the deformable arm is separated from an opposed end of the main portion a first distance and configured to form a first cavity or passage with the main portion for receiving or engaging with the wearable device; while in the deformed state the free end of the deformable arm is resiliently deformed to enable it to be separated from the opposed end of the main portion a second distance and configured to form a deformable second cavity or passage with the main portion for enabling insertion or removal of the wearable device into or from the clasp device.
    Type: Application
    Filed: September 28, 2020
    Publication date: August 19, 2021
    Inventor: Ka Wai Wayne Leung
  • Patent number: 11017377
    Abstract: An apparatus and a method for wireless secure payment and data transaction with biometric enrollment and authentication including an active and passive hybrid device for secure wireless data transaction including a secure element adapted for storing at least one secure applet and at least one data segment for secure contactless data transaction and operatively connected with an active operation unit and a passive operation unit; and preferably the active operation unit is adapted to be connected removably with the secure element; and wherein the hybrid device is configured to be switchable between an active state in which the active operation unit is activated on demand to enable the hybrid device to function as an active device and adapted for provisioning various data to the secure element; and a passive state in which the active operation unit is deactivated and the passive operation unit is activated to enable the hybrid device to function as a passive device and adapted for conducting data verification a
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: May 25, 2021
    Inventor: Ka Wai Wayne Leung
  • Publication number: 20210012319
    Abstract: A battery-less active and passive hybrid device for secure wireless payment comprising a secure element adapted for storing at least one secure payment applet and at least one token for secure contactless payment and operatively connected with an active operation unit and a passive operation unit; wherein the hybrid device is configured to be switchable between an active state in which the active operation unit is activated wirelessly on demand to enable the hybrid device to function as an active device and adapted for provisioning a personalization information of a payment card and/or a payment token of the device to the secure element; and a passive state in which the active operation unit is deactivated and the passive operation unit is activated to enable the hybrid device to function as a passive device and adapted for conducting payment token verification and/or contactless payment transaction operation via the secure element
    Type: Application
    Filed: February 9, 2018
    Publication date: January 14, 2021
    Inventor: Ka Wai Wayne Leung
  • Patent number: 10856140
    Abstract: A battery-less active and passive hybrid device for secure wireless payment comprising a secure element adapted for storing at least one secure applet and at least one data segment for secure contactless data transaction and operatively connected with an active operation unit and a passive operation unit; and preferably the active operation unit is adapted to be connected removably with the secure element; and wherein the hybrid device is configured to be switchable between an active state in which the active operation unit is activated on demand to enable the hybrid device to function as an active device and adapted for provisioning a personalization information and/or a token of the device to the secure element; and a passive state in which the active operation unit is deactivated and the passive operation unit is activated to enable the hybrid device to function as a passive device and adapted for conducting data verification and/or contactless data transaction operation via the secure element.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: December 1, 2020
    Inventor: Ka Wai Wayne Leung
  • Publication number: 20190147452
    Abstract: A biometric enabled wireless secure payment and/or data transaction apparatus including an active and passive hybrid device for secure wireless data transaction including a secure element adapted for storing at least one secure applet and at least one data segment for secure contactless data transaction and operatively connected with an active operation unit and a passive operation unit; and preferably the active operation unit is adapted to be connected removably with the secure element; and wherein the hybrid device is configured to be switchable between an active state in which the active operation unit is activated on demand to enable the hybrid device to function as an active device and adapted for provisioning various data to the secure element; and a passive state in which the active operation unit is deactivated and the passive operation unit is activated to enable the hybrid device to function as a passive device and adapted for conducting data verification and/or contactless data transaction operati
    Type: Application
    Filed: January 14, 2019
    Publication date: May 16, 2019
    Inventor: Ka Wai Wayne LEUNG
  • Publication number: 20190147434
    Abstract: An apparatus and a method for wireless secure payment and data transaction with biometric enrollment and authentication including an active and passive hybrid device for secure wireless data transaction including a secure element adapted for storing at least one secure applet and at least one data segment for secure contactless data transaction and operatively connected with an active operation unit and a passive operation unit; and preferably the active operation unit is adapted to be connected removably with the secure element; and wherein the hybrid device is configured to be switchable between an active state in which the active operation unit is activated on demand to enable the hybrid device to function as an active device and adapted for provisioning various data to the secure element; and a passive state in which the active operation unit is deactivated and the passive operation unit is activated to enable the hybrid device to function as a passive device and adapted for conducting data verification a
    Type: Application
    Filed: January 14, 2019
    Publication date: May 16, 2019
    Inventor: Ka Wai Wayne LEUNG
  • Publication number: 20190132730
    Abstract: A battery-less active and passive hybrid device for secure wireless payment comprising a secure element adapted for storing at least one secure applet and at least one data segment for secure contactless data transaction and operatively connected with an active operation unit and a passive operation unit; and preferably the active operation unit is adapted to be connected removably with the secure element; and wherein the hybrid device is configured to be switchable between an active state in which the active operation unit is activated on demand to enable the hybrid device to function as an active device and adapted for provisioning a personalization information and/or a token of the device to the secure element; and a passive state in which the active operation unit is deactivated and the passive operation unit is activated to enable the hybrid device to function as a passive device and adapted for conducting data verification and/or contactless data transaction operation via the secure element.
    Type: Application
    Filed: May 1, 2018
    Publication date: May 2, 2019
    Inventor: Ka Wai Wayne LEUNG
  • Patent number: 8036360
    Abstract: In one embodiment of the invention, a method produces a hook status notification. The method comprises detecting an off-hook state, allocating a half-dialog identification, generating an off-hook notification message, and associating the half-dialog identification with the off-hook notification message. In an alternative embodiment, a communication platform is adapted to comprise a processor component operable to receive an off-hook notification message comprising a half-dialog identification, and to store the half-dialog identification. The communication platform subsequently receives a signaling protocol message initiating a dialog, wherein the signaling protocol message is associated with the half-dialog identification. The communication platform then correlates the second signaling protocol message with the stored half-dialog identification.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: October 11, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Surya B. Gogineni, Daniel P. Linton, Umesh P. Katapadi, Wayne Leung
  • Patent number: 6847501
    Abstract: A method and apparatus for providing matched differential MR biasing and pre-amplification. Tightly matched and well centered low-level MR bias voltage is provided directly to the sensing element for controlled input-impedance differential pre-amplification without common-mode voltage level control with loops.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: January 25, 2005
    Assignee: International Business Machines Corporation
    Inventors: Wayne Leung Cheung, Stephen Alan Jove, Kevin Roy Vannorsdel
  • Publication number: 20040085664
    Abstract: A method and apparatus for providing matched differential MR biasing and pre-amplification. Tightly matched and well centered low-level MR bias voltage is provided directly to the sensing element for controlled input-impedance differential pre-amplification without common-mode voltage level control with loops.
    Type: Application
    Filed: November 6, 2002
    Publication date: May 6, 2004
    Applicant: International Business Machines Corporation
    Inventors: Wayne Leung Cheung, Stephen Alan Jove, Kevin Roy Vannorsdel
  • Patent number: 6456449
    Abstract: A magneto-resistive (M-R) head has a read element with a servo sensing width as wide as a data track width and a data sensing width of less than one data track width. The two read sensing widths are achieved by using a single read element having a center electrical contact from the M-R read element that effectively reduces the sensing width of the read element. In a first embodiment, the servo sensing width comprises a first portion of the read element and the data sensing width comprises a second, smaller portion of the read element. In a second embodiment, the servo sensing width comprises the entire read element width and the data sensing width comprises a portion thereof. In yet another embodiment, abutting read elements are constructed to enable separate optimization of each sensing width. The wide servo sensing width permits use of a wide servo pattern having servo bursts as wide as a data track width.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: September 24, 2002
    Assignee: International Business Machines Corporation
    Inventors: Karl Arnold Belser, Wayne Leung Cheung, Dave Anthony Freitas, Ju-Hi John Hong, Mohamad Towfik Krounbi, Michael Paul Salo, Scott Arthur Thomas
  • Patent number: 6393511
    Abstract: A multi-track density direct access storage device is disclosed. In accordance with a preferred embodiment of the present invention, a direct access storage device for data storage within a data processing system comprises a housing, a rotatable spindle, at least one disk, and several heads. The disk is fixedly mounted to the rotatable spindle, and the rotatable spindle is rotated by a motor within the housing. A first disk surface of the disk has a first track density and a second disk surface of the disk has a second track density; wherein the second track density is preferably greater than the first track density. Each of the several heads contains a transducer to read and write information from and to the disk during the disk rotation.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: May 21, 2002
    Assignee: International Business Machines Corporation
    Inventors: David William Albrecht, Wayne Leung Cheung, Kok-Kia Chew, Ju-Hi Hong, John Jeffrey Stephenson
  • Patent number: 6324030
    Abstract: A digital servo system for a disk drive provides servo information signal demodulation. The system includes a digital demodulator including a burst signal accumulator that accumulates terms according to respective burst timing intervals to produce a digital, quadrature position error signal (PES). The demodulator also can include a dibit burst filter with synchronous dibit sampling preferably implemented as a Hilbert Transform filter. Alternatively, the demodulator does not include a filter and a squarer and, instead, the squarer comprises a sum-and-squarer that sums the squares of odd and even digitized samples. In another embodiment, the system employs a digital demodulator having a digital squarer that removes any phase component of the digitized servo information signal and includes a burst signal accumulator that accumulates the squared terms according to respective burst timing intervals to produce the PES. The demodulator may include a filter comprising a harmonic notch filter.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: November 27, 2001
    Assignee: International Business Machines Corporation
    Inventors: Wayne Leung Cheung, Thinh Huu Nguyen, Chorng-Kuang Wang
  • Patent number: 5999351
    Abstract: A multi-track density direct access storage device is disclosed. In accordance with a preferred embodiment of the present invention, a direct access storage device for data storage within a data processing system comprises a housing, a rotatable spindle, at least one disk, and several heads. The disk is fixedly mounted to the rotatable spindle, and the rotatable spindle is rotated by a motor within the housing. A first disk surface of the disk has a first track density and a second disk surface of the disk has a second track density; wherein the second track density is preferably greater than the first track density. Each of the several heads contains a transducer to read and write information from and to the disk during the disk rotation.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: December 7, 1999
    Assignee: International Business Machines Corporation
    Inventors: David William Albrecht, Wayne Leung Cheung, Kok-Kia Chew, Ju-Hi Hong, John Jeffrey Stephenson
  • Patent number: 5966264
    Abstract: Servo pattern bursts are recorded with two frequencies that are detected using heterodyne detection with oscillators at the same frequency as the respective recorded frequencies. The two frequencies are selected to be orthogonal so the sensed servo pattern of one frequency is zero when detected with the detecting circuitry of the other frequency. The servo pattern bursts of the two frequencies are placed close together on the disk so they are sensed simultaneously so that, with orthogonality processing, a PES signal from a three phase pattern is sufficient to provide a robust linear signal, thereby eliminating one of the bursts from a quadrature pattern and reducing the disk surface area needed in each track for the servo pattern by 25% or more.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: October 12, 1999
    Assignee: International Business Machines Cororation
    Inventors: Karl Arnold Belser, Wayne Leung Cheung
  • Patent number: 5825579
    Abstract: An apparatus, system and method are described for generating a continuous and linear position signal generated from stitched position error signal (PES) components, for use by a servo control system in positioning a transducer with respect to a storage surface. Continuity is achieved by providing a normalization stage in the servo control loop for correcting discontinuities at the stitch points with minimal impact to the PES zero-crossing points. According to a first preferred embodiment normalization is applied using an algorithm determined by the width of the read transducer. According to a second preferred embodiment, normalization is selectively applied near the stitch points of the PES components, but is not applied at their zero-crossing points. In another preferred embodiment, a first normalization algorithm is applied near the stitch points, and a second normalization algorithm is applied at the zero-crossing points.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: October 20, 1998
    Assignee: International Business Machines Corporation
    Inventors: Wayne Leung Cheung, Donald L. Clare, Louis Joseph Serrano
  • Patent number: 5818659
    Abstract: A digital servo control system for a disk drive provides asynchronous servo information signal demodulation. The system includes a digital demodulator having a digital squarer that removes any phase component of the digitized servo information signal and includes a burst signal accumulator that accumulates the squared terms according to respective burst timing intervals to produce a digital, quadrature position error signal (PES). The demodulator also can include a filter comprising a harmonic notch filter preferably implemented as a Hilbert Transform filter. Alternatively, the demodulator does not include a filter and squarer and, instead, the squarer comprises a sum-and-squarer that sums the squares of odd and even digitized samples. A split burst servo pattern for the servo control system is comprised of half-width transitions that can be written in a single pass of a recording head and therefore has no phase misalignment between adjacent flux patterns.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: October 6, 1998
    Assignee: International Business Machines Corporation
    Inventors: Wayne Leung Cheung, Chung Chuan Liu, Francis Edward Mueller
  • Patent number: 5774298
    Abstract: A digital servo control system for a disk drive provides asynchronous servo information signal demodulation. The system includes a digital demodulator having a digital squarer that removes any phase component of the digitized servo information signal and includes a burst signal accumulator that accumulates the squared terms according to respective burst timing intervals to produce a digital, quadrature position error signal (PES). The demodulator also can include a filter comprising a harmonic notch filter preferably implemented as a Hilbert Transform filter. Alternatively, the demodulator does not include a filter and squarer and, instead, the squarer comprises a sum-and-squarer that sums the squares of odd and even digitized samples. A split burst servo pattern for the servo control system is comprised of half-width transitions that can be written in a single pass of a recording head and therefore has no phase misalignment between adjacent flux patterns.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: June 30, 1998
    Assignee: International Business Machines Corporation
    Inventors: Wayne Leung Cheung, Chung Chuan Liu, Francis Edward Mueller
  • Patent number: 5717538
    Abstract: A servo system accurately detects and processes signals from servo patterns encoded on magnetic storage disks using weighted accumulation, for use in precisely positioning read/write heads with respect to tracks of data contained on the disks. After servo patterns are sensed by reading them from a disk, the resultant servo signals are processed by weighted accumulation circuitry to provide a position signal, which may be decoded to ascertain the positioning error of the read/write head and to apply any corrections that might be needed. In one embodiment, an amplitude position signal is generated by multiplying the servo signal by complementary quadrature weighting signals, then squaring each quadrature output signal, summing them, and taking the square root of the summed signal.
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: February 10, 1998
    Assignee: International Business Machines Corporation
    Inventors: Wayne Leung Cheung, Kok-Kia Chew, Ju-Hi John Hong