Patents by Inventor Joanna F. Au

Joanna F. Au 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: 11935496
    Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes driving an electro-optic display having a plurality of display pixels and controlled by a display controller, the display controller associated with a host for providing operational instructions to the display controller, the method may include updating the display with a first image, updating the display with a second image subsequent to the first image, processing image data associated with the first image and the second image to identify display pixels with edge artifacts and generate image data associated with the identified pixels, storing the image data associated pixels with edge artifacts at a memory location, and initiating a waveform to clear the edge artifacts.
    Type: Grant
    Filed: May 26, 2023
    Date of Patent: March 19, 2024
    Assignee: E Ink Corporation
    Inventors: Teck Ping Sim, Yuval Ben-Dov, Joanna F. Au, Kenneth R. Crounse
  • Publication number: 20230386422
    Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes driving an electro-optic display having a plurality of display pixels and controlled by a display controller, the display controller associated with a host for providing operational instructions to the display controller, the method may include updating the display with a first image, updating the display with a second image subsequent to the first image, processing image data associated with the first image and the second image to identify display pixels with edge artifacts and generate image data associated with the identified pixels, storing the image data associated pixels with edge artifacts at a memory location, and initiating a waveform to clear the edge artifacts.
    Type: Application
    Filed: May 26, 2023
    Publication date: November 30, 2023
    Inventors: Teck Ping SIM, Yuval BEN-DOV, Joanna F. AU, Kenneth R. CROUNSE
  • Patent number: 11721295
    Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes driving an electro-optic display having a plurality of display pixels and controlled by a display controller, the display controller associated with a host for providing operational instructions to the display controller, the method may include updating the display with a first image, updating the display with a second image subsequent to the first image, processing image data associated with the first image and the second image to identify display pixels with edge artifacts and generate image data associated with the identified pixels, storing the image data associated pixels with edge artifacts at a memory location, and initiating a waveform to clear the edge artifacts.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: August 8, 2023
    Assignee: E Ink Corporation
    Inventors: Teck Ping Sim, Yuval Ben-Dov, Joanna F. Au, Kenneth R. Crounse
  • Patent number: 11656522
    Abstract: A temperature regulation system includes a laminate material that has a first light transmissive electrode layer, a rear electrode layer, and a bistable electrophoretic medium disposed between the first and second electrode layer. The electrophoretic medium includes two types of particles that have different charges and color. The amount of incident radiation (visible light, infrared, etc.) that is absorbed by the laminate can be modified by providing a voltage between the electrode layers.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: May 23, 2023
    Assignee: E Ink Corporation
    Inventors: John L. Marshall, Richard J. Paolini, Jr., Jay William Anseth, Joanna F. Au
  • Patent number: 11568827
    Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes updating a display having a plurality of display pixels with a first image, identifying display pixels with edge artifacts after the first image update, and storing the identified display pixels information in a memory. In particular, the methods are effective for minimizing edge ghosting when a pixel of an active matrix electrophoretic display undergoes a white to white transition or a black to black transition during an update between first and second images.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: January 31, 2023
    Assignee: E Ink Corporation
    Inventors: Teck Ping Sim, Yuval Ben-Dov, Joanna F. Au, Kenneth R. Crounse
  • Publication number: 20220375418
    Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes updating a display having a plurality of display pixels with a first image, identifying display pixels with edge artifacts after the first image update, and storing the identified display pixels information in a memory. In particular, the methods are effective for minimizing edge ghosting when a pixel of an active matrix electrophoretic display undergoes a white to white transition or a black to black transition during an update between first and second images.
    Type: Application
    Filed: July 26, 2022
    Publication date: November 24, 2022
    Inventors: Teck Ping SIM, Yuval BEN-DOV, Joanna F. AU, Kenneth R. CROUNSE
  • Patent number: 11423852
    Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes updating a display having a plurality of display pixels with a first image, identifying display pixels with edge artifacts after the first image update, and storing the identified display pixels information in a memory.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: August 23, 2022
    Assignee: E Ink Corporation
    Inventors: Teck Ping Sim, Yuval Ben-Dov, Joanna F. Au, Kenneth R. Crounse
  • Patent number: 10909936
    Abstract: A bistable electro-optic display has a plurality of pixels, each of which is capable of displaying at least three gray levels. The display is driven by a method comprising: storing a look-up table containing data representing the impulses necessary to convert an initial gray level to a final gray level; storing data representing at least an initial state of each pixel of the display; receiving an input signal representing a desired final state of at least one pixel of the display; and generating an output signal representing the impulse necessary to convert the initial state of said one pixel to the desired final state thereof, as determined from said look-up table. The invention also provides a method for reducing the remnant voltage of an electro-optic display.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: February 2, 2021
    Assignee: E Ink Corporation
    Inventors: Robert W. Zehner, Holly G. Gates, Karl Raymond Amundson, Joanna F. Au, Ara N. Knaian, Alexandros Cosmos Arango, Jonathan L. Zalesky
  • Publication number: 20200103719
    Abstract: A temperature regulation system includes a laminate material that has a first light transmissive electrode layer, a rear electrode layer, and a bistable electrophoretic medium disposed between the first and second electrode layer. The electrophoretic medium includes two types of particles that have different charges and color. The amount of incident radiation (visible light, infrared, etc.) that is absorbed by the laminate can be modified by providing a voltage between the electrode layers.
    Type: Application
    Filed: September 25, 2019
    Publication date: April 2, 2020
    Inventors: John L. MARSHALL, Richard J. PAOLINI, JR., Jay William ANSETH, Joanna F. AU
  • Publication number: 20190172401
    Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes driving an electro-optic display having a plurality of display pixels and controlled by a display controller, the display controller associated with a host for providing operational instructions to the display controller, the method may include updating the display with a first image, updating the display with a second image subsequent to the first image, processing image data associated with the first image and the second image to identify display pixels with edge artifacts and generate image data associated with the identified pixels, storing the image data associated pixels with edge artifacts at a memory location, and initiating a waveform to clear the edge artifacts.
    Type: Application
    Filed: January 22, 2019
    Publication date: June 6, 2019
    Inventors: Teck Ping SIM, Yuval BEN-DOV, Joanna F. AU, Kenneth R. CROUNSE
  • Publication number: 20190122617
    Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes updating a display having a plurality of display pixels with a first image, identifying display pixels with edge artifacts after the first image update, and storing the identified display pixels information in a memory.
    Type: Application
    Filed: September 12, 2018
    Publication date: April 25, 2019
    Inventors: Teck Ping SIM, Yuval BEN-DOV, Joanna F. AU, Kenneth R. CROUNSE
  • Publication number: 20170052422
    Abstract: A backplane for use in an electro-optic display comprises a patterned metal foil having a plurality of apertures extending therethrough, coated on at least side with an insulating polymeric material and having a plurality of thin film electronic devices provided on the insulating polymeric material.
    Type: Application
    Filed: November 4, 2016
    Publication date: February 23, 2017
    Inventors: Peter T. Kazlas, Joanna F. Au, Yu Chen, Nathan R. Kane
  • Publication number: 20160372055
    Abstract: A bistable electro-optic display has a plurality of pixels, each of which is capable of displaying at least three gray levels. The display is driven by a method comprising: storing a look-up table containing data representing the impulses necessary to convert an initial gray level to a final gray level; storing data representing at least an initial state of each pixel of the display; receiving an input signal representing a desired final state of at least one pixel of the display; and generating an output signal representing the impulse necessary to convert the initial state of said one pixel to the desired final state thereof, as determined from said look-up table. The invention also provides a method for reducing the remnant voltage of an electro-optic display.
    Type: Application
    Filed: September 2, 2016
    Publication date: December 22, 2016
    Inventors: Robert W. Zehner, Holly G. Gates, Karl Raymond Amundson, Joanna F. Au, Ara N. Knaian, Alexandros Cosmos Arango, Jonathan L. Zalesky
  • Publication number: 20160125790
    Abstract: A bistable electro-optic display has a plurality of pixels, each of which is capable of displaying at least three gray levels. The display is driven by a method comprising: storing a look-up table containing data representing the impulses necessary to convert an initial gray level to a final gray level; storing data representing at least an initial state of each pixel of the display; receiving an input signal representing a desired final state of at least one pixel of the display; and generating an output signal representing the impulse necessary to convert the initial state of said one pixel to the desired final state thereof, as determined from said look-up table. The invention also provides a method for reducing the remnant voltage of an electro-optic display.
    Type: Application
    Filed: January 8, 2016
    Publication date: May 5, 2016
    Inventors: Robert W. Zehner, Holly G. Gates, Karl Raymond Amundson, Joanna F. Au, Ara N. Knaian, Alexandros Cosmos Arango, Jonathan L. Zalesky
  • Publication number: 20150262551
    Abstract: A bistable electro-optic display has a plurality of pixels, each of which is capable of displaying at least three gray levels. The display is driven by a method comprising: storing a look-up table containing data representing the impulses necessary to convert an initial gray level to a final gray level; storing data representing at least an initial state of each pixel of the display; receiving an input signal representing a desired final state of at least one pixel of the display; and generating an output signal representing the impulse necessary to convert the initial state of said one pixel to the desired final state thereof, as determined from said look-up table. The invention also provides a method for reducing the remnant voltage of an electro-optic display.
    Type: Application
    Filed: May 30, 2015
    Publication date: September 17, 2015
    Inventors: Robert W. Zehner, Holly G. Gates, Karl Raymond Amundson, Joanna F. Au, Ara N. Knaian, Alexi C. Arango, Jonathan L. Zalesky
  • Patent number: 8558785
    Abstract: A bistable electro-optic display has a plurality of pixels, each of which is capable of displaying at least three gray levels. The display is driven by a method comprising: storing a look-up table containing data representing the impulses necessary to convert an initial gray level to a final gray level; storing data representing at least an initial state of each pixel of the display; receiving an input signal representing a desired final state of at least one pixel of the display; and generating an output signal representing the impulse necessary to convert the initial state of said one pixel to the desired final state thereof, as determined from said look-up table. The invention also provides a method for reducing the remnant voltage of an electro-optic display.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: October 15, 2013
    Assignee: E Ink Corporation
    Inventors: Robert W. Zehner, Holly G. Gates, Karl R. Amundson, Joanna F. Au, Ara N. Knaian, Alexi C. Arango, Jonathan L. Zalesky
  • Patent number: 8174490
    Abstract: A pixel of an electrophoretic display is driven from one extreme optical state to a second optical state different from the one extreme optical state by applying to the pixel a first drive pulse of one polarity; and thereafter applying to the pixel a second drive pulse of the opposite polarity, the second drive pulse being effective to drive the pixel to the second optical state.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: May 8, 2012
    Assignee: E Ink Corporation
    Inventors: Thomas H. Whitesides, Joanna F. Au, Karl R. Amundson, Robert W. Zehner, Ara N. Knaian, Benjamin Zion
  • Publication number: 20110140744
    Abstract: A backplane for use in an electro-optic display comprises a patterned metal foil having a plurality of apertures extending therethrough, coated on at least side with an insulating polymeric material and having a plurality of thin film electronic devices provided on the insulating polymeric material.
    Type: Application
    Filed: January 10, 2011
    Publication date: June 16, 2011
    Applicant: E INK CORPORATION
    Inventors: Peter T. Kazlas, Joanna F. Au, Yu Chen, Nathan R. Kane
  • Patent number: 7893435
    Abstract: A backplane for use in an electro-optic display comprises a patterned metal foil having a plurality of apertures extending therethrough, coated on at least side with an insulating polymeric material and having a plurality of thin film electronic devices provided on the insulating polymeric material.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: February 22, 2011
    Assignee: E Ink Corporation
    Inventors: Peter T. Kazlas, Joanna F. Au, Yu Chen, Nathan R. Kane, David John Cole
  • Publication number: 20100220122
    Abstract: A bistable electro-optic display has a plurality of pixels, each of which is capable of displaying at least three gray levels. The display is driven by a method comprising: storing a look-up table containing data representing the impulses necessary to convert an initial gray level to a final gray level; storing data representing at least an initial state of each pixel of the display; receiving an input signal representing a desired final state of at least one pixel of the display; and generating an output signal representing the impulse necessary to convert the initial state of said one pixel to the desired final state thereof, as determined from said look-up table. The invention also provides a method for reducing the remnant voltage of an electro-optic display.
    Type: Application
    Filed: May 18, 2010
    Publication date: September 2, 2010
    Applicant: E Ink Corporation
    Inventors: Robert W. Zehner, Holly G. Gates, Karl R. Amundson, Joanna F. Au, Ara N. Knaian, Jonathan L. Zalesky, Alexi C. Arango