Patents by Inventor Cheng-Da Huang

Cheng-Da Huang 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: 20160104534
    Abstract: The invention provides a non-volatile memory cell structure and non-volatile memory apparatus using the same. The non-volatile memory cell structure includes a substrate, first to three wells and first to three transistors. The first to three wells are disposed in the substrate, and the first to three transistors are respectively forming on the first to three wells. The first to third transistors are coupled in series. Wherein, a control end of the first transistor is floated, a control end of the second transistor receives a bias voltage, and a control end of the third transistor is coupled to a word line signal. Moreover, the third well and the second cell are in same type, and the type of the first well is complementary to a type of the third well.
    Type: Application
    Filed: January 27, 2015
    Publication date: April 14, 2016
    Inventors: Chih-Chun Chen, Chun-Hung Lin, Cheng-Da Huang
  • Patent number: 9214203
    Abstract: A sensing apparatus and data sensing method are provided. The sensing apparatus includes an initial circuit, a reference current generator and a sensing circuit. The initial circuit discharges a sensing end to a reference ground during a discharge period, and pre-charges the sensing end to a preset voltage level during a pre-charge period according to an output signal. The reference current generator draws a reference current from the sensing end. The sensing circuit senses a voltage level on the sensing end to generate the output signal. Wherein, the sensing end receives a cell current from a memory cell, and the pre-charge period is after the discharge period.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: December 15, 2015
    Assignee: eMemory Technology Inc.
    Inventors: Po-Ping Wang, Cheng-Da Huang, Chun-Hung Lin
  • Publication number: 20150228315
    Abstract: A sensing apparatus and data sensing method are provided. The sensing apparatus includes an initial circuit, a reference current generator and a sensing circuit. The initial circuit discharges a sensing end to a reference ground during a discharge period, and pre-charges the sensing end to a preset voltage level during a pre-charge period according to an output signal. The reference current generator draws a reference current from the sensing end. The sensing circuit senses a voltage level on the sensing end to generate the output signal. Wherein, the sensing end receives a cell current from a memory cell, and the pre-charge period is after the discharge period.
    Type: Application
    Filed: February 12, 2014
    Publication date: August 13, 2015
    Applicant: eMemory Technology Inc.
    Inventors: Po-Ping Wang, Cheng-Da Huang, Chun-Hung Lin
  • Patent number: 7872913
    Abstract: A nonvolatile analog memory has a floating gate point. The nonvolatile analog memory includes a capacitor, a first current source, a second current source and a current adjuster. The first current source controlled by a voltage value at the floating gate point and generates a first current. The second current source controlled by the voltage value at the floating gate point and generates a second current. The current adjuster receives the output voltage and a reference voltage and adjusts the first current and the second current based on the output voltage and the reference voltage. The current adjuster charges or discharges the capacitor to equalize the output voltage to the reference voltage.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: January 18, 2011
    Assignee: National Tsing Hua University
    Inventors: Cheng-Da Huang, Chih-Cheng Lu, Hsin Chen
  • Publication number: 20100188899
    Abstract: A nonvolatile analog memory has a floating gate point. The nonvolatile analog memory includes a capacitor. a first current source, a second current source and a current adjuster. The first current source controlled by a voltage value at the floating gate point and generates a first current. The second current source controlled by the voltage value at the floating gate point and generates a second current. The current adjuster receives the output voltage and a reference voltage and adjusts the first current and the second current based on the output voltage and the reference voltage. The current adjuster charges or discharges the capacitor to equalize the output voltage to the reference voltage.
    Type: Application
    Filed: April 12, 2010
    Publication date: July 29, 2010
    Applicant: NATIONAL TSING HUA UNIVERSITY
    Inventors: Cheng-Da Huang, Chih-Cheng Lu, Hsin Chen
  • Patent number: 7746693
    Abstract: A nonvolatile analog memory has a floating gate point. The nonvolatile analog memory includes a first current source, a second current source, and a current adjuster. The first current source generates a first current, and the second current source generates a second current. The current adjuster turns on or turns off a current path of the second current according to a reference current and the first current. Furthermore, when the current path of the second current is turned on, the first current is adjusted according to the second current, such that the first current is equal to the reference current.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: June 29, 2010
    Assignee: National Tsing Hua University
    Inventors: Cheng-Da Huang, Chih-Cheng Lu, Hsin Chen
  • Publication number: 20090257276
    Abstract: A nonvolatile analog memory has a floating gate point. The nonvolatile analog memory includes a first current source, a second current source, and a current adjuster. The first current source generates a first current, and the second current source generates a second current. The current adjuster turns on or turns off a current path of the second current according to a reference current and the first current. Furthermore, when the current path of the second current is turned on, the first current is adjusted according to the second current, such that the first current is equal to the reference current.
    Type: Application
    Filed: August 15, 2008
    Publication date: October 15, 2009
    Applicant: NATIONAL TSING HUA UNIVERSITY
    Inventors: Cheng-Da Huang, Chih-Cheng Lu, Hsin Chen