Patents by Inventor Chih-Hsiang Ho

Chih-Hsiang Ho 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: 20210012721
    Abstract: An electro-optic display having a plurality of display pixels, each of the plurality of display pixels comprising: a pixel electrode for driving the display pixel; a thin film transistor (TFT) coupled to the pixel electrode for transmitting waveforms to the pixel electrode; a resistor coupled to the pixel electrode for discharging remnant charges from the display subsequent to the TFT being de-activated; and a storage capacitor coupled to the pixel electrode and placed in parallel with the resistor. A time constant of a circuit comprising the pixel electrode, the resistor, and the storage capacitor is larger than a driving frame time of the electro-optic display.
    Type: Application
    Filed: September 25, 2020
    Publication date: January 14, 2021
    Inventors: Pierre-Yves EMELIE, Teck Ping SIM, Kenneth R. CROUNSE, Karl Raymond AMUNDSON, Chih-Hsiang HO
  • Patent number: 10852568
    Abstract: This invention provides methods of and related apparatus for driving an electro-optic display having a plurality of pixels. The method includes dividing the plurality of pixels into n groups, where n is an integer larger than 1, applying a full clearing waveform to at least one group of the n groups of pixels, and applying a top off waveform to cardinal pixels of the at least one group of pixels.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: December 1, 2020
    Assignee: E Ink Corporation
    Inventors: Kenneth R. Crounse, Karl Raymond Amundson, Teck Ping Sim, Yuval Ben-Dov, Chih-Hsiang Ho
  • Patent number: 10832622
    Abstract: A driving method is provided for an electric-optic display having a plurality of display pixels, the method including dividing the plurality of display pixels into multiple groups of pixels, applying at least one waveform structure to the multiple groups of pixels, the at least one waveform structure having a driving section for updating the multiple groups of pixels, and updating the multiple groups of pixels in a contiguous fashion such that only one group of display pixels completes the driving section at any given time.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: November 10, 2020
    Assignee: E Ink Corporation
    Inventors: Pierre-Yves Emelie, Ana L. Lattes, Kenneth R. Crounse, Chih-Hsiang Ho
  • Patent number: 10825405
    Abstract: A thin film transistor (TFT) backplane comprising a plurality of electrodes. Each of the plurality of electrodes is coupled to circuitry comprising: a first thin film transistor (TFT) coupled to the electrode for transmitting waveforms to the electrode, and a second TFT coupled to the electrode for discharging remnant charges from the electrode, wherein the second TFT is activated subsequent to the first TFT being deactivated.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: November 3, 2020
    Assignee: E Ink Corporatior
    Inventors: Pierre-Yves Emelie, Teck Ping Sim, Kenneth R. Crounse, Karl Raymond Amundson, Chih-Hsiang Ho
  • Patent number: 10798158
    Abstract: A network system includes Internet of Things (IoT) devices, computation server, and gateways. At least one of the computation servers is configured to: tag, according to a signal quality of a signal of the IoT devices, the IoT devices as first devices and second devices; compute a device number of the first devices connecting with the gateways, and while the gateways are connected to the second devices, compute a gateway number the second devices capable of connecting to; compute a load index associated with the device number and the gateway number of the gateways; compute a transmission energy consumption index of a first link between the gateways and the computation servers; select, according to the load index and the transmission energy consumption index of the gateways; and obtain a communication network, wherein the communication network comprises the first devices, the second devices, and the gateways selected.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: October 6, 2020
    Assignee: INSTITUTE FOR INFORMATION INDUSTRY
    Inventors: Chih-Hsiang Ho, Chih-Hang Wang, De-Nian Yang
  • Publication number: 20200211479
    Abstract: An electro-optic display having at least one row of display pixels, the display include a first display pixel of the at least one row of display pixels, the first display pixel coupled to a first bias line, and a second display pixel of the at least one row of display pixels, the second display pixel coupled to a second bias line, wherein the second bias line is different from the first bias line.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 2, 2020
    Inventors: Chih-Hsiang HO, Yi LU
  • Publication number: 20200152137
    Abstract: A thin film transistor (TFT) backplane comprising a plurality of electrodes. Each of the plurality of electrodes is coupled to circuitry comprising: a first thin film transistor (TFT) coupled to the electrode for transmitting waveforms to the electrode, and a second TFT coupled to the electrode for discharging remnant charges from the electrode, wherein the second TFT is activated subsequent to the first TFT being deactivated.
    Type: Application
    Filed: January 17, 2020
    Publication date: May 14, 2020
    Inventors: Pierre-Yves EMELIE, Teck Ping SIM, Kenneth R. CROUNSE, Karl Raymond AMUNDSON, Chih-Hsiang HO
  • Publication number: 20200152140
    Abstract: An apparatus for driving an electro-optic display may comprise spaced first and second device layers, and a first and second rows of display pixels, each row may include a plurality of display pixels, each display pixel having a pixel electrode positioned on the first device layer for driving the display pixel, a conduction line positioned on the second device layer and overlapping with a portion of the plurality of display pixels' pixel electrodes, and at least one conductive path connecting the conduction line of the first row to a conduction line of the second row of display pixels.
    Type: Application
    Filed: November 8, 2019
    Publication date: May 14, 2020
    Inventors: Chih-Hsiang HO, Yi LU
  • Patent number: 10573257
    Abstract: An electro-optic display having an electrophoretic material configured for displaying images, and an active component coupled to the electrophoretic material for discharging charges within the electrophoretic material.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: February 25, 2020
    Assignee: E Ink Corporation
    Inventors: Pierre-Yves Emelie, Teck Ping Sim, Kenneth R. Crounse, Karl Raymond Amundson, Chih-Hsiang Ho
  • Publication number: 20190266956
    Abstract: A method for driving an electro-optic display having a front electrode and a rear electrode, a display medium position between the front and rear electrode, and a transistor coupled to the rear electrode, the driving method may include applying a first voltage to the front electrode and a second voltage to the rear electrode, applying a third voltage to the front and rear electrodes to create a substantially zero volt potential across the display medium, wherein the third voltage is of a magnitude insufficient to create a leakage current of sufficient magnitude in the transistor to cause an optical effect on the display, and applying a fourth voltage to the front electrode and a fifth voltage to the rear electrode.
    Type: Application
    Filed: February 26, 2019
    Publication date: August 29, 2019
    Inventors: Teck Ping SIM, Yuval BEN-DOV, Chih-Hsiang HO
  • Publication number: 20190251911
    Abstract: An electro-optic display including an array of pixel electrodes, where each row of pixel electrodes is associated with a source line, and that source line is connected to a drive chip with a T-wire that connects from the back of the substrate to the front of the substrate through a via. The vias are spaced out, such as in a zig-zag pattern or a pseudo-random pattern to reduce the capacitive coupling between the T-wires when adjacent pixels are driven, for example when presenting text characters.
    Type: Application
    Filed: February 12, 2019
    Publication date: August 15, 2019
    Inventors: Chih-Hsiang HO, Yi LU, Yuval BEN-DOV, Teck Ping SIM
  • Publication number: 20190166024
    Abstract: A network anomaly analysis apparatus, method, and non-transitory computer readable storage medium thereof are provided. The network anomaly analysis apparatus stores a plurality of network status data and is configured to dimension-reduce each network status datum into a principal component datum, select a first subset and a second subset of the principal component data as the training data and the testing data respectively, derive a classification model by classifying the training data into a plurality of normal data and a plurality of abnormal data, derive a clustering model by clustering the abnormal data, derive an accuracy rate by testing the classification model and the clustering model by the testing data, select a third subset of the principal component data as a plurality of validation data when the accuracy rate fails to reach a threshold, and update the classification model and the clustering model with the validation data.
    Type: Application
    Filed: November 24, 2017
    Publication date: May 30, 2019
    Inventors: Chih-Hsiang Ho, Li-Sheng Chen, Wei-Ho Chung, Sy-Yen Kuo
  • Publication number: 20180350309
    Abstract: An electro-optic display having an electrophoretic material configured for displaying images, and an active component coupled to the electrophoretic material for discharging charges within the electrophoretic material.
    Type: Application
    Filed: May 30, 2018
    Publication date: December 6, 2018
    Inventors: Pierre-Yves EMELIE, Teck Ping SIM, Kenneth R. CROUNSE, Karl Raymond AMUNDSON, Chih-Hsiang HO
  • Publication number: 20180286319
    Abstract: A driving method is provided for an electric-optic display having a plurality of display pixels, the method including dividing the plurality of display pixels into multiple groups of pixels, applying at least one waveform structure to the multiple groups of pixels, the at least one waveform structure having a driving section for updating the multiple groups of pixels, and updating the multiple groups of pixels in a contiguous fashion such that only one group of display pixels completes the driving section at any given time.
    Type: Application
    Filed: April 4, 2018
    Publication date: October 4, 2018
    Inventors: Pierre-Yves EMELIE, Ana L. LATTES, Kenneth R. CROUNSE, Chih-Hsiang HO
  • Publication number: 20180252980
    Abstract: This invention provides methods of and related apparatus for driving an electro-optic display having a plurality of pixels. The method includes dividing the plurality of pixels into n groups, where n is an integer larger than 1, applying a full clearing waveform to at least one group of the n groups of pixels, and applying a top off waveform to cardinal pixels of the at least one group of pixels.
    Type: Application
    Filed: March 2, 2018
    Publication date: September 6, 2018
    Inventors: Kenneth R. CROUNSE, Karl Raymond AMUNDSON, Teck Ping SIM, Yuval BEN-DOV, Chih-Hsiang HO
  • Patent number: 10069584
    Abstract: A frequency calibration apparatus and method are provided. An oscillator of the frequency calibration apparatus has an operation frequency. The frequency calibration apparatus receives a plurality of time packets from an NTP server at a plurality of first time points. Each of the time packets records a second time point that the NTP server transmits the time packet. The frequency calibration apparatus calculates an offset for each of the time packets in a subset of all the time packets, calculates a clock skew according to the first time points and the offsets of the time packets in the subset, calculates a difference between the clock skew and a standard frequency value, determines that an absolute value of the difference is greater than a threshold, and adjusts the operation frequency to an initial frequency after determining that the absolute value of the difference is greater than the threshold.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: September 4, 2018
    Assignee: Institute For Information Industry
    Inventors: Ding-Jie Huang, Yi-Chih Tung, Chih-Hsiang Ho, Muh Wu, Shu-Min Chuang
  • Publication number: 20180102081
    Abstract: A driving method an electro-optic display having a plurality of display pixels, the method include applying a first set of waveform to a first display pixel, the first set of waveform having at least one active portion configured to affect the optical state of the first display pixel and at least one non-active portion configured not to substantially affect the optical state of the first display pixel. The method also include applying a second set of waveform to a second display pixel, the second set of waveform having at least one active portion configured to affect the optical state of the second display pixel and at least one non-active portion configured not to substantially affect the optical state of the second display pixel, where the at least one active portions of the first and second set of waveforms do not overlap in time.
    Type: Application
    Filed: October 6, 2017
    Publication date: April 12, 2018
    Inventors: Yi LU, Theodore A. SJODIN, Chih-Hsiang HO, Karl Raymond AMUNDSON
  • Publication number: 20170347292
    Abstract: A base station central control server and a base station outage compensation method thereof are provided. After detecting an outage of a first base station, the base station central control server calculates a plurality of compensation indices which correspond to a plurality of second base stations according to base station information of the second base stations, and selects a prior compensation index which corresponds to a third base station. The base station central control server selects a main compensation configuration from a plurality of compensation configurations of the third base station, and notifies the third base station of performing compensation communication based on the main compensation configuration.
    Type: Application
    Filed: December 6, 2016
    Publication date: November 30, 2017
    Inventors: Chih-Hsiang HO, Li-Sheng CHEN, Wei-Ho CHUNG, Sy-Yen KUO
  • Patent number: 9818336
    Abstract: This disclosure provides systems, methods, apparatus, and computer readable media for generating images on a display using a dithering process that takes into account an uneven spacing of available gray scale values in at least one color subfield used to generate the images. The dithering process includes generating a set of initial color subfields, a set of quantized color subfields, and a set of final color subfields, which are then output on the display. The quantized color subfields an the final color subfields are derived based at least in part on the uneven spacing of gray scale values in at least one of the final color subfields.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: November 14, 2017
    Assignee: SnapTrack Inc.
    Inventors: Fahri Yaras, Chih-Hsiang Ho, Edward Buckley
  • Patent number: 9794847
    Abstract: A central control device and a load balancing method thereof are provided. The central control device includes a network interface, a storage and a processor. The network interface is connected to a plurality of base stations and receives a load parameter from each base station. The storage stores the load parameters. The processor is electrically connected to the storage and the network interface. For each base station, the processor calculates a load indication according to the load parameter thereof to determine whether the base station is an overloaded base station based on the load indication, and calculates an offload priority indication according to the load indication, a quantity of off-loadable resources of at least one neighboring base station, a first weighting factor and a second weighting factor. The processor determines an offload order of the overloaded base stations according to the offload priority indications.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: October 17, 2017
    Assignee: Institute For Information Industry
    Inventors: Chih-Hsiang Ho, Li-Sheng Chen, Wei-Ho Chung, Sy-Yen Kuo