Patents by Inventor Wei-Nan Liao

Wei-Nan Liao 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: 9159403
    Abstract: A control circuit of SRAM and an operating method thereof are provided. The control circuit includes a memory array, a word-line driver, a boost circuit and a voltage level detecting circuit. The memory array includes a plurality of memory cells. Each memory cell includes a plurality of transistors. The word-line driver is to activate the word-line of the memory array for cell storage data access. The boost circuit is to provide the higher voltage source for the word-line driver and a first operating voltage for boosting the first operating voltage to a second operating voltage. The voltage level detecting circuit is detecting if the first operation voltage needs to be boosted with boost-operation and a detecting-trigger signal and controls the operating of the boost circuit based on the detecting-trigger signal, the first operating voltage and a predetermined voltage.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: October 13, 2015
    Assignee: National Chiao Tung University
    Inventors: Ching-Te Chuang, Nan-Chun Lien, Wei-Nan Liao, Li-Wei Chu, Chi-Shin Chang, Ming-Hsien Tu
  • Patent number: 8854897
    Abstract: A static random access memory apparatus and a bit-line voltage controller includes a controller, a pull-up circuit, a pull-down circuit and a voltage keeping circuit. The controller receives a bank selecting signal and a clock signal, and decides a pull-up time period, a pull-down time period and a voltage keeping time period according to the bank selecting signal and the clock signal. The pull-up circuit pulls up a bit-line power according to a first reference voltage within the pull-up time period. The pull-down circuit pulls down the bit-line power according to a second reference voltage within the pull-down time period. The voltage keeping circuit keeps the bit-line power to equal to an output voltage during the voltage keeping time period. The voltage keeping time period is after the pull-up time period and the pull-down time period.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: October 7, 2014
    Assignees: Faraday Technology Corp., National Chiao Tung University
    Inventors: Ching-Te Chuang, Nan-Chun Lien, Wei-Nan Liao, Chi-Hsin Chang, Hao-I Yang, Wei Hwang, Ming-Hsien Tu
  • Publication number: 20140063918
    Abstract: A control circuit of SRAM and an operating method thereof are provided. The control circuit includes a memory array, a word-line driver, a boost circuit and a voltage level detecting circuit. The memory array includes a plurality of memory cells. Each memory cell includes a plurality of transistors. The word-line driver is to activate the word-line of the memory array for cell storage data access. The boost circuit is to provide the higher voltage source for the word-line driver and a first operating voltage for boosting the first operating voltage to a second operating voltage. The voltage level detecting circuit is detecting if the first operation voltage needed boosted with boost-operation and a detecting-trigger signal and controls the operating of the boost circuit based on the detecting-trigger signal, the first operating voltage and a predetermined voltage.
    Type: Application
    Filed: January 10, 2013
    Publication date: March 6, 2014
    Applicant: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Ching-Te CHUANG, Nan-Chun LIEN, Wei-Nan LIAO, Li-Wei CHU, Chi-Shin CHANG, Ming-Hsien TU
  • Publication number: 20140009999
    Abstract: A static random access memory apparatus and a bit-line voltage controller thereof are disclosed. The bit-line voltage controller includes a controller, a pull-up circuit, a pull-down circuit and a voltage keeping circuit. The controller receives a bank selecting signal and a clock signal, and decides a pull-up time period, a pull-down time period and a voltage keeping time period according to the bank selecting signal and the clock signal. The pull-up circuit pulls up a bit-line power according to a first reference voltage within the pull-up time period. The pull-down circuit pulls down the bit-line power according to a second reference voltage within the pull-down time period. The voltage keeping circuit keeps the bit-line power to equal to an output voltage during the voltage keeping time period. The voltage keeping time period is after the pull-up time period and the pull-down time period.
    Type: Application
    Filed: November 1, 2012
    Publication date: January 9, 2014
    Inventors: Ching-Te Chuang, Nan-Chun Lien, Wei-Nan Liao, Chi-Hsin Chang, Hao-I Yang, Wei Hwang, Ming-Hsien Tu