Patents by Inventor Jack Chu

Jack Chu 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: 20240038176
    Abstract: Systems and methods are described here to compensate for crosstalk (e.g., coupling distortions) that may be caused by a fanout overlaid or otherwise affecting signals transmitted within an active area of an electronic display. The systems and methods may be based on buffered previous image data. Technical effects associated with compensating for the crosstalk may include improved display of image frames since some image artifacts are mitigated and/or made unperceivable or eliminated.
    Type: Application
    Filed: June 28, 2023
    Publication date: February 1, 2024
    Inventors: Kingsuk Brahma, Jie Won Ryu, Satish S Iyengar, Yue Jack Chu, Jongyup Lim
  • Publication number: 20240038175
    Abstract: Systems and methods are described here to compensate for crosstalk (e.g., coupling distortions) that may be caused by a fanout overlaid or otherwise affecting signals transmitted within an active area of an electronic display. The systems and methods may be based on buffered previous image data. Technical effects associated with compensating for the crosstalk may include improved display of image frames since some image artifacts are mitigated and/or made unperceivable or eliminated.
    Type: Application
    Filed: June 28, 2023
    Publication date: February 1, 2024
    Inventors: Kingsuk Brahma, Jie Won Ryu, Satish S. Iyengar, Yue Jack Chu, Jongyup Lim
  • Publication number: 20240013692
    Abstract: To reduce overall power consumption for an electronic display power management integrated circuit (PMIC), one of multiple electric power converters and/or electric power regulators may be selected based on an electrical load (e.g., due to the total brightness of the content displayed) on the electronic display at a given moment. In some embodiments, the PMIC may include a less efficient heavy load converter designed with high-current handling capability and a more efficient light load (e.g., low current) converter with lower current handling capability. A controller may dynamically select between the converters depending on a present load or an expected load on the electronic display.
    Type: Application
    Filed: June 21, 2023
    Publication date: January 11, 2024
    Inventors: Jie Won Ryu, Ardra Singh, Arthur L. Spence, Christopher P. Tann, Chun Lu, Daniel J. Drusch, Hyunwoo Nho, Jongyup Lim, Kingsuk Brahma, Marc J. DeVincentis, Mohammad Ali Jangda, Paolo Sacchetto, Peter F. Holland, Shawn P. Hurley, Wei H. Yao, Yue Jack Chu, Zhe Hua
  • Patent number: 11756481
    Abstract: Systems, methods, and devices are provided for mitigating visual artifacts by dynamically tuning bias voltages applied to display pixels. An electronic display may include a display pixel and a bias voltage supply. The bias voltage supply may supply a first bias voltage to the display pixel for a first subframe of a frame of image data. The bias voltage supply may supply a different second bias voltage to the display pixel for a second subframe of the frame of image data. This may mitigate certain image artifacts, such as flicker or variable refresh rate luminance difference, that could arise due to display pixel hysteresis that varies across subframes of the image frame.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: September 12, 2023
    Assignee: Apple Inc.
    Inventors: Hyunsoo Kim, Kingsuk Brahma, Myungjoon Choi, Yue Jack Chu, Li-Xuan Chuo, Hassan Edrees, Chin-Wei Lin, Hyunwoo Nho, Shinya Ono, Alex H. Pai, Jie Won Ryu, Yao Shi, Chaohao Wang
  • Patent number: 11740736
    Abstract: Techniques for implementing and/or operating an electronic device including a display pixel layer, which writes a display image during an active period and continues displaying the display image during a blanking period, and a touch sense layer, which generates a first touch image during the active period and a second touch image during the blanking period. The electronic device further includes a controller that determines a first noise metric indicative of display-to-touch noise resulting during the active period based on the first touch image, determines a second noise metric indicative of display-to-touch noise resulting during the blanking period based on the second touch image, and instructs the touch sense layer to not generate a third touch image during a subsequent active period in response to the first noise metric being greater than a noise threshold and the second noise metric not being greater than the noise threshold.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: August 29, 2023
    Assignee: Apple Inc.
    Inventors: Anshi Liang, He Yi, Yang Xu, Paolo Sacchetto, Jun Li, Jingyu Huang, Marc Joseph DeVincentis, Yue Jack Chu
  • Publication number: 20230197020
    Abstract: This disclosure provide various techniques for tracking emission profiles on an electronic display. An emission profile may be applied to the electronic display in order to illuminate certain pixels and deactivate (e.g., turn off) certain pixels in the electronic display to facilitate refreshing (e.g., programming with new image data) the deactivated pixels. A real-time row-based average pixel level or average pixel luminance calculation architecture may track the one or more EM profiles to accurately model EM profile behavior, which may enable accurate calculation of the average pixel level or average pixel luminance of the electronic display at any one point in time. The accurate average pixel level or average pixel luminance calculations effectuated by the EM profile tracking may be used to reduce the IR drop, improve real-time peak-luminance control, and improve the performance of under-display sensors, among other advantages.
    Type: Application
    Filed: November 16, 2022
    Publication date: June 22, 2023
    Inventors: Shengkui Gao, Jie Won Ryu, Kingsuk Brahma, Marc J DeVincentis, Mohammad Ali Jangda, Paolo Sacchetto, Weijun Yao, Yafei Bi, Yang Xu, Yue Jack Chu, Zhe Hua
  • Publication number: 20230041321
    Abstract: A polymer coating/ring is employed to aid in the sealing and connection of modular elements used in body flow lumens for the exclusion and bypass of diseased regions of the flow lumen, such as where aneurysm occurs adjacent to branching blood vessels.
    Type: Application
    Filed: October 6, 2022
    Publication date: February 9, 2023
    Inventors: Prema Ganesan O'Brien, Jonathan Morris, David Erickson, Matthew Rust, Curtis Hanson, Jack Chu, Charles Thomas
  • Publication number: 20220395397
    Abstract: An implantable ocular drain includes a body and a compliant portion. The body includes a first end configured to seat in an anterior chamber of an eye. The first end includes an inlet for ingress of aqueous humor into the implantable ocular drain. The body further includes a second end configured to seat in a tear film of the eye. The second end includes an outlet to release a flow of the aqueous humor into the tear film. The body further defines a tortuosity and a fluid conduit. The body includes a lumen having a lumen length and a lumen cross sectional area. The lumen length and the lumen cross sectional area and the tortuosity are configured to control an intraocular pressure (IOP) of the eye by controlling the flow of the aqueous humor through the lumen. The compliant portion is at the second end.
    Type: Application
    Filed: August 15, 2022
    Publication date: December 15, 2022
    Inventor: Jack CHU
  • Patent number: 11504223
    Abstract: A polymer coating/ring is employed to aid in the sealing and connection of modular elements used in body flow lumens for the exclusion and bypass of diseased regions of the flow lumen, such as where aneurysm occurs adjacent to branching blood vessels.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: November 22, 2022
    Assignee: Medtronic Vascular, Inc.
    Inventors: Prema Ganesan O'Brien, Jonathan Morris, David R. Erickson, Matthew Rust, Curtis Hanson, Jack Chu, Charles Thomas
  • Patent number: 11446179
    Abstract: An ocular device for treating glaucoma in an eye are described herein. The ocular device includes a first end, a second end, and a body. The first end is configured to seat in an anterior chamber of an eye. The first end includes an inlet configured to facilitate an ingress of aqueous humor into the ocular device. The second end is configured to seat in a tear film of the eye. The second end includes an outlet configured to facilitate release a flow of the aqueous humor into the tear film. The body is defined by a fluid conduit. The body includes a lumen having a lumen length and a lumen cross sectional area. The lumen length and the lumen cross sectional area are configured to control an intraocular pressure (IOP) of the eye by controlling the flow of the aqueous humor through the lumen.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: September 20, 2022
    Inventor: Jack Chu
  • Patent number: 11369384
    Abstract: Methods, devices and systems are described for treating venous insufficiency in which the vein is compressed at least partially along a treatment zone. A system can be provided including an injection device, such as a glue gun, that is operably connected to a delivery catheter that can be advanced across a treatment zone in the vein. The delivery catheter can be used to deliver one, two, or more boluses of media (e.g., cyanoacrylate) to occlude the vein along different spaced-apart sections of the treatment zone. External compression can also be applied to the vein by a compression element, such as a hand or multifunctional ultrasound transducer, to occlude portions of the vein along the treatment zone prior to or during the introduction of the boluses of media.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: June 28, 2022
    Assignee: COVIDIEN LP
    Inventors: Rodney D. Raabe, Jack Chu, Don Crawford, Jan R. Lau, Zhenyu Zuo
  • Patent number: 11302264
    Abstract: A display device may include rows of pixels that display image data on a display and a circuit. The circuit may receive pixel data value of image data for a pixel in a first row of the rows of pixels, determine a weight factor to apply to the pixel data value based on a position of the first row with respect to the other rows, such that each row is associated with a current-resistance (IR) drop across the display. The weight factor is determined based on a respective IR drop associated with the first row. The circuit may also generate a weighted pixel data value based on the weight factor and the pixel data value and send the weighted pixel data value to a display driver circuit that renders the image data via the display.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: April 12, 2022
    Assignee: Apple Inc.
    Inventors: Shengkui Gao, Marc Joseph DeVincentis, Yue Jack Chu, Sinan Alousi, Mohammad Hajirostam, Mohammad Ali Jangda, Koorosh Aflatooni, Pierre-Yves Emelie, Yafei Bi, Paolo Sacchetto, Kasra Omid-Zohoor
  • Publication number: 20220076627
    Abstract: Systems, methods, and devices are provided for mitigating visual artifacts by dynamically tuning bias voltages applied to display pixels. An electronic display may include a display pixel and a bias voltage supply. The bias voltage supply may supply a first bias voltage to the display pixel for a first subframe of a frame of image data. The bias voltage supply may supply a different second bias voltage to the display pixel for a second subframe of the frame of image data. This may mitigate certain image artifacts, such as flicker or variable refresh rate luminance difference, that could arise due to display pixel hysteresis that varies across subframes of the image frame.
    Type: Application
    Filed: September 8, 2021
    Publication date: March 10, 2022
    Inventors: Hyunsoo Kim, Kingsuk Brahma, Myungjoon Choi, Yue Jack Chu, Li-Xuan Chuo, Hassan Edrees, Chin-Wei Lin, Hyunwoo Nho, Shinya Ono, Alex H. Pai, Jie Won Ryu, Yao Shi, Chaohao Wang
  • Publication number: 20210304673
    Abstract: A system may include an electronic display panel having pixels, where each pixel may emit light based on a respective programming signal. The system may include a memory storing a map. The processing circuitry may determine a function for each pixel from the map. The processing circuitry may determine a respective control signal based on the function and a target brightness level for each pixel to generate multiple control signals, where the respective control signal is used to generate the respective programing signal for each pixel. The processing circuitry may determine a scaling factor based at least in part on the first map and may scale at least a subset of the multiple control signals based at least in part on the scaling factor.
    Type: Application
    Filed: March 3, 2021
    Publication date: September 30, 2021
    Inventors: Shengkui Gao, Haifeng Li, Sinan Alousi, Marc Joseph DeVincentis, Yafei Bi, Hung Sheng Lin, Yi Qiao, Paolo Sacchetto, Weijun Yao, Pierre-Yves Emelie, Maofeng Yang, Yue Jack Chu
  • Patent number: 11081053
    Abstract: A display may have an array of organic light-emitting diode display pixels. Each display pixel may include a drive transistor coupled in series with one or more emission transistors and a respective organic light-emitting diode (OLED). A semiconducting-oxide transistor may be coupled between a drain terminal and a gate terminal of the drive transistor to help reduce leakage during low-refresh-rate display operations. To compensate for variations in the threshold voltage of the semiconducting-oxide transistor, the magnitude of a high voltage level of a scan control signal provided to the gate terminal of the semiconducting-oxide transistor may be adjusted. Sensing circuitry may be used to sense a display current while displaying a calibration image. The sensed display current may be compared to an expected display current associated with the calibration image. Processing circuitry may update the high voltage level based on the actual display current compared to the expected display current.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: August 3, 2021
    Assignee: Apple Inc.
    Inventors: Jiayi Jin, David A. Doyle, Kyung Hoae Koo, Maofeng Yang, Michael H. Lim, Paolo Sacchetto, Timothy M. Johnson, Venkatesh Rajendran, Weijun Yao, Yue Jack Chu
  • Patent number: 10902777
    Abstract: A display driver is disclosed that reduces first frame dimming and flicker in light-emitting diode pixels of a display device. The display driver may receive a display brightness value and determine a value of a dynamic supply voltage parameter based on the display brightness value. Over a first time interval, the display driver may apply a supply voltage that is based on the dynamic supply voltage parameter to one of a gate of a drive transistor of a light-emitting-diode circuit and a channel of the drive transistor. Over a second time interval, the display driver may apply a parking voltage to an anode of a light-emitting diode of the light-emitting-diode circuit and to the channel of the drive transistor. The value of the parking voltage may be below a threshold voltage of the light-emitting diode and correspond to the value of the dynamic supply voltage parameter.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: January 26, 2021
    Assignee: Apple Inc.
    Inventors: Ruo-Gu Huang, Kyung Hoae Koo, Michael H. Lim, Chuang Qian, Weijun Yao, Yue Jack Chu
  • Publication number: 20210012711
    Abstract: A display driver is disclosed that reduces first frame dimming and flicker in light-emitting diode pixels of a display device. The display driver may receive a display brightness value and determine a value of a dynamic supply voltage parameter based on the display brightness value. Over a first time interval, the display driver may apply a supply voltage that is based on the dynamic supply voltage parameter to one of a gate of a drive transistor of a light-emitting-diode circuit and a channel of the drive transistor. Over a second time interval, the display driver may apply a parking voltage to an anode of a light-emitting diode of the light-emitting-diode circuit and to the channel of the drive transistor. The value of the parking voltage may be below a threshold voltage of the light-emitting diode and correspond to the value of the dynamic supply voltage parameter.
    Type: Application
    Filed: July 8, 2019
    Publication date: January 14, 2021
    Inventors: Ruo-Gu Huang, Kyung Hoae Koo, Michael H. Lim, Chuang Qian, Weijun Yao, Yue Jack Chu
  • Patent number: 10825419
    Abstract: In situations with reduced image changes, display panels, such as the ones disclosed herein, may reduce their power consumption by performing self-refresh cycles, in which they may display locally stored data in the display panel instead of retrieving it from an image buffer. Methods and circuitry for management of the self-refresh cycle may reduce jitter, luminance errors, and/or flickers that may be caused by untimely self-refresh cycles that may occur as a result of latency in the image buffer. In some implementations, the display panel may have a dedicated low latency input that notifies an arrival of an incoming image. In some implementations, the self-refresh cycles of the panel may be managed by a host or a buffer that is responsible for sending the images.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: November 3, 2020
    Assignee: Apple Inc.
    Inventors: Yue Jack Chu, Christopher P. Tann, Arthur L. Spence, Brad W. Simeral, Yafei Bi, Jiayi Jin, Ruo-Gu Huang, Haifeng Li, Weijun Yao, Chaohao Wang
  • Publication number: 20200281604
    Abstract: Methods, devices and systems are described for treating venous insufficiency in which the vein is compressed at least partially along a treatment zone. A system can be provided including an injection device, such as a glue gun, that is operably connected to a delivery catheter that can be advanced across a treatment zone in the vein. The delivery catheter can be used to deliver one, two, or more boluses of media (e.g., cyanoacrylate) to occlude the vein along different spaced-apart sections of the treatment zone. External compression can also be applied to the vein by a compression element, such as a hand or multifunctional ultrasound transducer, to occlude portions of the vein along the treatment zone prior to or during the introduction of the boluses of media.
    Type: Application
    Filed: May 27, 2020
    Publication date: September 10, 2020
    Inventors: Rodney D. Raabe, Jack Chu, Don Crawford, Jan R. Lau, Zhenyu Zuo
  • Publication number: 20200243012
    Abstract: A display may have an array of organic light-emitting diode display pixels. Each display pixel may include a drive transistor coupled in series with one or more emission transistors and a respective organic light-emitting diode (OLED). A semiconducting-oxide transistor may be coupled between a drain terminal and a gate terminal of the drive transistor to help reduce leakage during low-refresh-rate display operations. To compensate for variations in the threshold voltage of the semiconducting-oxide transistor, the magnitude of a high voltage level of a scan control signal provided to the gate terminal of the semiconducting-oxide transistor may be adjusted. Sensing circuitry may be used to sense a display current while displaying a calibration image. The sensed display current may be compared to an expected display current associated with the calibration image. Processing circuitry may update the high voltage level based on the actual display current compared to the expected display current.
    Type: Application
    Filed: February 22, 2019
    Publication date: July 30, 2020
    Inventors: Jiayi Jin, David A. Doyle, Kyung Hoae Koo, Maofeng Yang, Michael H. Lim, Paolo Sacchetto, Timothy M. Johnson, Venkatesh Rajendran, Weijun Yao, Yue Jack Chu