Patents by Inventor Omar Leung

Omar 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: 9851829
    Abstract: Signal processing for a touch and hover sensing display device is disclosed. A touch and hover sensing display device can include a sensing panel for sensing a touch or hover event, a display for displaying graphical information to select based on the touch or hover event, and a control system for processing a signal indicative of the touch or hover event. The control system can process the signal to determine to which display location a hovering object is pointing according to a profile of the object's shape. In addition or alternatively, the control system can process the signal to differentiate between a close small object and a distant large object so as to subsequently perform intended actions of the device based, at least in part, on the object distance and/or area (or size). The display can be positioned at a desirable distance from the panel so as to reduce interference from the display to the panel and avoid adverse effects on the signal.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: December 26, 2017
    Assignee: Apple Inc.
    Inventors: Brian Michael King, Omar Leung, Paul G. Puskarich, Jeffrey Traer Bernstein, Andrea Mucignat, Avi E. Cieplinski, Muhammad U. Choudry, Praveen R. Subramani, Marc J. Piche, David T. Amm, Duncan Robert Kerr
  • Patent number: 9632622
    Abstract: Ground detection of a touch sensitive device is disclosed. The device can detect its grounded state so that poor grounding can be selectively compensated for in touch signals outputted by the device. The device can include one or more components to monitor certain conditions of the device. The device can analyze the monitored conditions to determine the grounding condition of the device. The device can apply a function to compensate its touch signal outputs if the device determines that it is poorly grounded. Conversely, the device can omit the function if the device determines that it is well grounded.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: April 25, 2017
    Assignee: Apple Inc.
    Inventors: Steven Porter Hotelling, David T. Amm, Michael Lammers, John T. Orchard, Brian Michael King, Omar Leung, Deniz Teoman
  • Patent number: 9323398
    Abstract: Improved capacitive touch and hover sensing with a sensor array is provided. An AC ground shield positioned behind the sensor array and stimulated with signals of the same waveform as the signals driving the sensor array may concentrate the electric field extending from the sensor array and enhance hover sensing capability. The hover position and/or height of an object that is nearby, but not directly above, a touch surface of the sensor array, e.g., in the border area at the end of a touch screen, may be determined using capacitive measurements of sensors near the end of the sensor array by fitting the measurements to a model. Other improvements relate to the joint operation of touch and hover sensing, such as determining when and how to perform touch sensing, hover sensing, both touch and hover sensing, or neither.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: April 26, 2016
    Assignee: Apple Inc.
    Inventors: Jeffrey Traer Bernstein, David T. Amm, Omar Leung, Christopher Tenzin Mullens, Brian Michael King, Brian Richards Land, Reese T. Cutler
  • Patent number: 9268431
    Abstract: Touch and hover switching is disclosed. A touch and hover sensing device can switch between a touch mode and a hover mode. During a touch mode, the device can be switched to sense one or more objects touching the device. During a hover mode, the device can be switched to sense one or more objects hovering over the device. The device can include a panel having multiple sensors for sensing a touching object and/or a hovering object and a touch and hover control system for switching the device between the touch and hover modes. The device's touch and hover control system can include a touch sensing circuit for coupling to the sensors to measure a capacitance indicative of a touching object during the touch mode, a hover sensing circuit for coupling to the sensors to measure a capacitance indicative of a hovering object during the hover mode, and a switching mechanism for switching the sensors to couple to either the touch sensing circuit or the hover sensing circuit.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: February 23, 2016
    Assignee: Apple Inc.
    Inventors: Brian Michael King, Omar Leung, Paul G. Puskarich, Jeffrey Traer Bernstein, Andrea Mucignat, Avi E. Cieplinski, Muhammad U. Choudry, Praveen R. Subramani, Marc J. Piche, David T. Amm, Duncan Robert Kerr
  • Patent number: 9098138
    Abstract: Detecting a signal from a touch and hover sensing device, in which the signal can be indicative of concurrent touch events and/or hover events, is disclosed. A touch event can indicate an object touching the device. A hover event can indicate an object hovering over the device. The touch and hover sensing device can ensure that a desired hover event is not masked by an incidental touch event, e.g., a hand holding the device, by compensating for the touch event in the detected signal that represents both events. Conversely, when both a hover event and a touch event are desired, the touch and hover sensing device can ensure that both events are detected by adjusting the device sensors and/or the detected signal. The touch and hover sensing device can also detect concurrent hover events by identifying multiple peaks in the detected signal, each peak corresponding to a position of a hovering object.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: August 4, 2015
    Assignee: Apple Inc.
    Inventors: Brian Michael King, Omar Leung, Paul G. Puskarich, Jeffrey Traer Bernstein, Andrea Mucignat, Avi E. Cieplinski, Muhammad U. Choudry, Praveen R. Subramani, Marc J. Piche, David T. Amm, Duncan Robert Kerr
  • Patent number: 8982060
    Abstract: Compensation for sensors in a touch and hover sensing device is disclosed. Compensation can be for sensor resistance and/or sensor sensitivity variation that can adversely affect touch and hover measurements at the sensors. To compensate for sensor resistance, the device can gang adjacent sensors together so as to reduce the overall resistance of the sensors. In addition or alternatively, the device can drive the sensors with voltages from multiple directions so as to reduce the effects of the sensors' resistance. To compensate for sensor sensitivity variation (generally at issue for hover measurements), the device can apply a gain factor to the measurements, where the gain factor is a function of the sensor location, so as to reduce the sensitivity variation at different sensor locations on the device.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: March 17, 2015
    Assignee: Apple Inc.
    Inventors: Brian Michael King, Omar Leung, Paul G. Puskarich, Jeffrey Traer Bernstein, Andrea Mucignat, Avi E. Cieplinski, Muhammad U. Choudry, Praveen R. Subramani, Marc J. Piche, David T. Amm, Duncan Robert Kerr
  • Patent number: 8614693
    Abstract: Compensation for signal drift in a touch and hover sensing device is disclosed. A touch and hover sensing device can include a sensing panel to sense an object touching or hovering over the panel, a grounding device to periodically interact with the panel, and a control system to measure capacitance of the panel when the grounding device interacts with the panel, where the measurement captures any signal drift in the panel, and to set the measurement as a new baseline capacitance of the panel. Alternatively, the touch and hover sensing device can forgo the grounding device and configure the control system to measure capacitance of the panel either when there has been no touching or hovering object or when there is a substantially stationary touching or hovering object at the panel for a determinative time period, where the measurement captures any signal drift in the panel, and to set the measurement from this time period as the new baseline capacitance.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: December 24, 2013
    Assignee: Apple Inc.
    Inventors: Brian Michael King, Omar Leung, Paul G. Puskarich, Jeffrey Traer Bernstein, Andrea Mucignat, Avi E. Cieplinski, Muhammad U. Choudry, Praveen R. Subramani, Marc J. Piche, David T. Amm, Duncan Robert Kerr
  • Publication number: 20120050211
    Abstract: Detecting a signal from a touch and hover sensing device, in which the signal can be indicative of concurrent touch events and/or hover events, is disclosed. A touch event can indicate an object touching the device. A hover event can indicate an object hovering over the device. The touch and hover sensing device can ensure that a desired hover event is not masked by an incidental touch event, e.g., a hand holding the device, by compensating for the touch event in the detected signal that represents both events. Conversely, when both a hover event and a touch event are desired, the touch and hover sensing device can ensure that both events are detected by adjusting the device sensors and/or the detected signal. The touch and hover sensing device can also detect concurrent hover events by identifying multiple peaks in the detected signal, each peak corresponding to a position of a hovering object.
    Type: Application
    Filed: September 30, 2010
    Publication date: March 1, 2012
    Inventors: Brian Michael KING, Omar Leung, Paul G. Puskarich, Jeffrey Traer Bernstein, Andrea Mucignat, Avi E. Cieplinski, Muhammad U. Choudry, Praveen R. Subramani, Marc J. Piche, David T. Amm, Duncan Robert Kerr
  • Publication number: 20120050180
    Abstract: Touch and hover switching is disclosed. A touch and hover sensing device can switch between a touch mode and a hover mode. During a touch mode, the device can be switched to sense one or more objects touching the device. During a hover mode, the device can be switched to sense one or more objects hovering over the device. The device can include a panel having multiple sensors for sensing a touching object and/or a hovering object and a touch and hover control system for switching the device between the touch and hover modes. The device's touch and hover control system can include a touch sensing circuit for coupling to the sensors to measure a capacitance indicative of a touching object during the touch mode, a hover sensing circuit for coupling to the sensors to measure a capacitance indicative of a hovering object during the hover mode, and a switching mechanism for switching the sensors to couple to either the touch sensing circuit or the hover sensing circuit.
    Type: Application
    Filed: September 30, 2010
    Publication date: March 1, 2012
    Inventors: Brian Michael KING, Omar LEUNG, Paul G. PUSKARICH, Jeffrey Traer BERNSTEIN, Andrea MUCIGNAT, Avi E. CIEPLINSKI, Muhammad U. CHOUDRY, Praveen R. SUBRAMANI, Marc J. PICHE, David T. AMM, Duncan Robert KERR
  • Publication number: 20120050209
    Abstract: Compensation for sensors in a touch and hover sensing device is disclosed. Compensation can be for sensor resistance and/or sensor sensitivity variation that can adversely affect touch and hover measurements at the sensors. To compensate for sensor resistance, the device can gang adjacent sensors together so as to reduce the overall resistance of the sensors. In addition or alternatively, the device can drive the sensors with voltages from multiple directions so as to reduce the effects of the sensors' resistance. To compensate for sensor sensitivity variation (generally at issue for hover measurements), the device can apply a gain factor to the measurements, where the gain factor is a function of the sensor location, so as to reduce the sensitivity variation at different sensor locations on the device.
    Type: Application
    Filed: September 30, 2010
    Publication date: March 1, 2012
    Inventors: Brian Michael KING, Omar Leung, Paul G. Puskarich, Jeffrey Traer Bernstein, Andrea Mucignat, Avi E. Cieplinski, Muhammad U. Choudry, Praveen R. Subramani, Marc J. Piche, David T. Amm, Duncan Robert Kerr
  • Publication number: 20120050181
    Abstract: Signal processing for a touch and hover sensing display device is disclosed. A touch and hover sensing display device can include a sensing panel for sensing a touch or hover event, a display for displaying graphical information to select based on the touch or hover event, and a control system for processing a signal indicative of the touch or hover event. The control system can process the signal to determine to which display location a hovering object is pointing according to a profile of the object's shape. In addition or alternatively, the control system can process the signal to differentiate between a close small object and a distant large object so as to subsequently perform intended actions of the device based, at least in part, on the object distance and/or area (or size). The display can be positioned at a desirable distance from the panel so as to reduce interference from the display to the panel and avoid adverse effects on the signal.
    Type: Application
    Filed: September 30, 2010
    Publication date: March 1, 2012
    Inventors: Brian Michael KING, Omar Leung, Paul G. Puskarich, Jeffrey Traer Bernstein, Andrea Mucignat, Avi E. Cieplinski, Muhammad U. Choudry, Praveen R. Subramani, Marc J. Piche, David T. Amm, Duncan Robert Kerr
  • Publication number: 20120050210
    Abstract: Compensation for signal drift in a touch and hover sensing device is disclosed. A touch and hover sensing device can include a sensing panel to sense an object touching or hovering over the panel, a grounding device to periodically interact with the panel, and a control system to measure capacitance of the panel when the grounding device interacts with the panel, where the measurement captures any signal drift in the panel, and to set the measurement as a new baseline capacitance of the panel. Alternatively, the touch and hover sensing device can forgo the grounding device and configure the control system to measure capacitance of the panel either when there has been no touching or hovering object or when there is a substantially stationary touching or hovering object at the panel for a determinative time period, where the measurement captures any signal drift in the panel, and to set the measurement from this time period as the new baseline capacitance.
    Type: Application
    Filed: September 30, 2010
    Publication date: March 1, 2012
    Inventors: Brian Michael King, Omar Leung, Paul G. Puskarich, Jeffrey Traer Bernstein, Andrea Mucignat, Avi E. Cieplinski, Muhammad U. Choudry, Praveen R. Subramani, Marc J. Piche, David T. Amm, Duncan Robert Kerr
  • Publication number: 20110012840
    Abstract: Ground detection of a touch sensitive device is disclosed. The device can detect its grounded state so that poor grounding can be selectively compensated for in touch signals outputted by the device. The device can include one or more components to monitor certain conditions of the device. The device can analyze the monitored conditions to determine the grounding condition of the device. The device can apply a function to compensate its touch signal outputs if the device determines that it is poorly grounded. Conversely, the device can omit the function if the device determines that it is well grounded.
    Type: Application
    Filed: July 16, 2009
    Publication date: January 20, 2011
    Inventors: Steven Porter HOTELLING, David T. Amm, Michael Lammers, John T. Orchard, Brian Michael King, Omar Leung, Deniz Teoman
  • Publication number: 20110007021
    Abstract: Improved capacitive touch and hover sensing with a sensor array is provided. An AC ground shield positioned behind the sensor array and stimulated with signals of the same waveform as the signals driving the sensor array may concentrate the electric field extending from the sensor array and enhance hover sensing capability. The hover position and/or height of an object that is nearby, but not directly above, a touch surface of the sensor array, e.g., in the border area at the end of a touch screen, may be determined using capacitive measurements of sensors near the end of the sensor array by fitting the measurements to a model. Other improvements relate to the joint operation of touch and hover sensing, such as determining when and how to perform touch sensing, hover sensing, both touch and hover sensing, or neither.
    Type: Application
    Filed: July 10, 2009
    Publication date: January 13, 2011
    Inventors: Jeffrey Traer BERNSTEIN, David T. AMM, Omar LEUNG, Christopher Tenzin MULLENS, Brian Michael KING, Brian Richards LAND, Reese T. CUTLER
  • Publication number: 20060125503
    Abstract: In one embodiment, a probe card includes a substrate and a plurality of probes. Each of the probes may have a supported portion and an unsupported portion that meet at a base. The unsupported portion may have a non-uniform (e.g. triangular) cross-section along a length that begins at the base. The probes may be interleaved and fabricated using MEMS fabrication techniques.
    Type: Application
    Filed: December 7, 2005
    Publication date: June 15, 2006
    Inventor: Omar Leung
  • Publication number: 20060098266
    Abstract: In one embodiment, a capacitive micro electromechanical systems (MEMS) device includes a dielectric spacer between a bottom electrode and a movable member. The movable member may serve as a top electrode. A gap separates the top electrode from the dielectric spacer. The movable member may be actuated to deflect towards the bottom electrode by electrostatic force. The dielectric spacer reduces the height of the gap that would otherwise be formed between a top surface of the bottom electrode and a bottom surface of the movable member, thereby improving squeeze-film damping. The movable member may be a ribbon of a ribbon-type diffractive spatial light modulator, for example.
    Type: Application
    Filed: November 1, 2005
    Publication date: May 11, 2006
    Inventors: Alexander Payne, Omar Leung
  • Patent number: 7042611
    Abstract: A modulator for and a method of modulating an incident beam of light including means for supporting a plurality of active elements and a plurality of bias elements, each active and bias element including a light reflective planar surface with the light reflective planar surfaces of the plurality of active elements lying in a first parallel plane and the plurality of bias elements lying in a second parallel plane wherein the plurality of active and bias elements are parallel to each other and further wherein the plurality of bias elements are mechanically or electrically deflected with respect to the plurality of active elements. Each of the plurality of bias elements is deflected an odd multiple of the wavelength of an incident light wave divided by four and the plurality of light reflective planar surfaces of the plurality of active elements move between the first parallel plane to the second parallel plane.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: May 9, 2006
    Assignee: Silicon Light Machines Corporation
    Inventors: Christopher Gudeman, Omar Leung, James Hunter, David Amm
  • Publication number: 20050212893
    Abstract: One embodiment described pertains to a thermal printer is provided having a spatial light modulator (SLM) to modulate light from a laser source to record information on a thermal-sensitive surface of a recording medium, and a heater adjacent to the medium to preheat the thermal-sensitive surface prior to recording of information thereon. The printer may further include illumination optics for focusing the light beam onto the SLM, and imaging optics to image the light on the thermal-sensitive surface. The heater may comprise a resistive, a convective or a radiant heater. The printer may further include a feed mechanism with a roller having an outer surface in contact with the recording medium for feeding it past the imaging optics, and the heater may be disposed inside of the roller to heat the recording medium in contact with the roller. The heater may be arranged to heat the entire outer surface of the roller, or only a portion thereof. Other embodiments are also described.
    Type: Application
    Filed: March 18, 2005
    Publication date: September 29, 2005
    Inventors: Harold Zarem, Omar Leung
  • Patent number: 6712480
    Abstract: The current invention is directed to optical MEM devices and methods for making the same. MEM devices, in accordance with the current invention, have one or more movable micro-structures which are preferably ribbon structures or cantilever structures configured for modulating light. The movable micro-structures are patterned from a device layer comprising a silicon nitride under-layer, a reflective metal top-layer and a ceramic compensating layer. The ceramic compensating layer is provided. to reduce stress in the micro-structures which can lead to curvature. In accordance with the embodiments of the invention, the device layer is formed on a silicon substrate that is preferably etched with trenches before forming the device layer. The device layer is then patterned using lithographic masking and etching techniques to release the patterned device layer and form the movable micro-structures. Portions of the device layer which are formed over the trenches provide support for the released patterned device layer.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: March 30, 2004
    Assignee: Silicon Light Machines
    Inventors: Omar Leung, David T. Amm
  • Patent number: 6587253
    Abstract: The current invention is directed to devices and systems with patterned reflective surfaces. The reflective surfaces are patterned with primary reflective regions and gap regions. The gap regions provide for separation between reflective material within adjacent primary reflective regions. The separation between reflective material reduces atomic flux which can lead to the depletion of the reflective material within regions of the reflective surface that are exposed to an intense light source. The primary reflective regions are preferably formed from a reflective material such as aluminum, silver, gold or platinum. The gap regions are left vacant or deposited with second material which is non-reflective, reflective or semi-reflective. The patterned reflective surface is preferably formed on a micro-structure, such an elongated ribbon. The patterned ribbon structure is preferably one of a plurality patterned ribbon structures in a grating light valve device.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: July 1, 2003
    Assignee: Silicon Light Machines
    Inventors: Ilan Blech, Omar Leung