Patents by Inventor Shu-Lin LAI

Shu-Lin LAI 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: 11880607
    Abstract: A self-repair memory circuit includes a cell array, a controller, a row repair decoder, and a column repair decoder. The cell array includes rows and columns of memory cells. The controller receives an input indicating row repair or column repair, and a repair address shared by the row repair and the column repair of the cell array. The row repair decoder maps the repair address of a defective row to a redundant row of the cell array when the input indicates the row repair. The column repair decoder maps the repair address of a defective column to another column of the cell array when the input indicates the column repair.
    Type: Grant
    Filed: November 17, 2021
    Date of Patent: January 23, 2024
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Kim Soon Jway, Shu-Lin Lai, Yi-Ping Kuo
  • Publication number: 20220171543
    Abstract: A self-repair memory circuit includes a cell array, a controller, a row repair decoder, and a column repair decoder. The cell array includes rows and columns of memory cells. The controller receives an input indicating row repair or column repair, and a repair address shared by the row repair and the column repair of the cell array. The row repair decoder maps the repair address of a defective row to a redundant row of the cell array when the input indicates the row repair. The column repair decoder maps the repair address of a defective column to another column of the cell array when the input indicates the column repair.
    Type: Application
    Filed: November 17, 2021
    Publication date: June 2, 2022
    Inventors: Kim Soon Jway, Shu-Lin Lai, Yi-Ping Kuo
  • Patent number: 10770161
    Abstract: A sense amplifier for reading a via Read-Only Memory (Via-ROM) is provided. The sense amplifier includes a read circuit, an adaptive keeper circuit and a leakage monitor circuit. The read circuit is connected to the via-ROM. The adaptive keeper circuit is connected to the read circuit. The leakage monitor circuit is connected to the adaptive keeper circuit for forming a current mirror, such that the adaptive keeper circuit compensates a read voltage of a memory cell whose via is opened when a bit-line leakage is happened.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: September 8, 2020
    Assignee: MEDIATEK INC.
    Inventors: Chia-Wei Wang, Shu-Lin Lai, Yi-Te Chiu
  • Publication number: 20190108890
    Abstract: A sense amplifier for reading a via Read-Only Memory (Via-ROM) is provided. The sense amplifier includes a read circuit, an adaptive keeper circuit and a leakage monitor circuit. The read circuit is connected to the via-ROM. The adaptive keeper circuit is connected to the read circuit. The leakage monitor circuit is connected to the adaptive keeper circuit for forming a current mirror, such that the adaptive keeper circuit compensates a read voltage of a memory cell whose via is opened when a bit-line leakage is happened.
    Type: Application
    Filed: December 6, 2018
    Publication date: April 11, 2019
    Inventors: Chia-Wei Wang, Shu-Lin Lai, Yi-Te Chiu
  • Patent number: 10181358
    Abstract: A sense amplifier for reading a via Read-Only Memory (Via-ROM) is provided. The sense amplifier includes a read circuit, an adaptive keeper circuit and a leakage monitor circuit. The read circuit is connected to the via-ROM. The adaptive keeper circuit is connected to the read circuit. The leakage monitor circuit is connected to the adaptive keeper circuit for forming a current mirror, such that the adaptive keeper circuit compensates a read voltage of a memory cell whose via is opened when a bit-line leakage is happened.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: January 15, 2019
    Assignee: MEDIATEK INC.
    Inventors: Chia-Wei Wang, Shu-Lin Lai, Yi-Te Chiu
  • Patent number: 10176853
    Abstract: A pre-processing circuit is used for pre-processing a data-line voltage representative of a data output of a memory device. The pre-processing circuit includes a pre-charging circuit and a clamping circuit. The pre-charging circuit pre-charges a data line to adjust the data-line voltage at the data line that is coupled to the memory device. The clamping circuit clamps the data-line voltage to generate a clamped data-line voltage when the data-line voltage is pre-charged to a level that enables a clamping function of the clamping circuit, wherein the clamped data-line voltage is lower than a supply voltage of the pre-processing circuit. The clamping circuit includes a feedback circuit that feeds back a control voltage according to the data-line voltage at the data line, and further reduces its direct current (DC) leakage when the data-line voltage is clamped, wherein the clamping function of the clamping circuit is controlled by the control voltage.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: January 8, 2019
    Assignee: MEDIATEK INC.
    Inventors: Chi-Hao Hong, Dao-Ping Wang, Yi-Wei Chen, Yi-Ping Kuo, Shu-Lin Lai
  • Patent number: 10043578
    Abstract: A sense amplifier circuit includes a single-ended sense amplifier and an isolation switch. The isolation switch is coupled between a bias node and a first line of a memory device, receives an output of the single-ended sense amplifier and selectively isolates the bias node and the first line in response to the output of the single-ended sense amplifier. The first line is coupled to a plurality of memory cells of the memory device.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: August 7, 2018
    Assignee: MEDIATEK INC.
    Inventors: Shu-Lin Lai, Shu-Hsuan Lin, Shih-Huang Huang
  • Publication number: 20180114583
    Abstract: A sense amplifier for reading a via Read-Only Memory (Via-ROM) is provided. The sense amplifier includes a read circuit, an adaptive keeper circuit and a leakage monitor circuit. The read circuit is connected to the via-ROM. The adaptive keeper circuit is connected to the read circuit. The leakage monitor circuit is connected to the adaptive keeper circuit for forming a current mirror, such that the adaptive keeper circuit compensates a read voltage of a memory cell whose via is opened when a bit-line leakage is happened.
    Type: Application
    Filed: April 20, 2017
    Publication date: April 26, 2018
    Inventors: Chia-Wei Wang, Shu-Lin Lai, Yi-Te Chiu
  • Publication number: 20170345469
    Abstract: A pre-processing circuit is used for pre-processing a data-line voltage representative of a data output of a memory device. The pre-processing circuit includes a pre-charging circuit and a clamping circuit. The pre-charging circuit pre-charges a data line to adjust the data-line voltage at the data line that is coupled to the memory device. The clamping circuit clamps the data-line voltage to generate a clamped data-line voltage when the data-line voltage is pre-charged to a level that enables a clamping function of the clamping circuit, wherein the clamped data-line voltage is lower than a supply voltage of the pre-processing circuit. The clamping circuit includes a feedback circuit that feeds back a control voltage according to the data-line voltage at the data line, and further reduces its direct current (DC) leakage when the data-line voltage is clamped, wherein the clamping function of the clamping circuit is controlled by the control voltage.
    Type: Application
    Filed: April 27, 2017
    Publication date: November 30, 2017
    Inventors: Chi-Hao Hong, Dao-Ping Wang, Yi-Wei Chen, Yi-Ping Kuo, Shu-Lin Lai
  • Publication number: 20170140822
    Abstract: A sense amplifier circuit includes a single-ended sense amplifier and an isolation switch. The isolation switch is coupled between a bias node and a first line of a memory device, receives an output of the single-ended sense amplifier and selectively isolates the bias node and the first line in response to the output of the single-ended sense amplifier. The first line is coupled to a plurality of memory cells of the memory device.
    Type: Application
    Filed: November 8, 2016
    Publication date: May 18, 2017
    Inventors: Shu-Lin LAI, Shu-Hsuan LIN, Shih-Huang HUANG
  • Patent number: 8773894
    Abstract: A static random access memory includes a pre-charger, a first cell column array/peripheral circuit, and a first ripple buffer. The pre-charger is connected to a first local bit line in order to pre-charge the first local bit line. The first cell column array/peripheral circuit is connected to the first local bit line and has a plurality of cells for temporarily storing data. The cells are connected to the first local bit line. The first ripple buffer is connected to the first local bit line and a second local bit line in order to send the data from the first local bit line to the second local bit line.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: July 8, 2014
    Assignee: National Chiao Tung University
    Inventors: Ching-Te Chuang, Hao-I Yang, Chien-Yu Lu, Chien-Hen Chen, Chi-Shin Chang, Po-Tsang Huang, Shu-Lin Lai, Wei Hwang, Shyh-Jye Jou, Ming-Hsien Tu
  • Publication number: 20140078818
    Abstract: A static random access memory includes a pre-charger, a first cell column array/peripheral circuit, and a first ripple buffer. The pre-charger is connected to a first local bit line in order to pre-charge the first local bit line. The first cell column array/peripheral circuit is connected to the first local bit line and has a plurality of cells for temporarily storing data. The cells are connected to the first local bit line. The first ripple buffer is connected to the first local bit line and a second local bit line in order to send the data from the first local bit line to the second local bit line.
    Type: Application
    Filed: November 26, 2012
    Publication date: March 20, 2014
    Applicant: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Ching-Te CHUANG, Hao-I YANG, Chien-Yu LU, Chien-Hen CHEN, Chi-Shin CHANG, Po-Tsang HUANG, Shu-Lin LAI, Wei HWANG, Shyh-Jye JOU, Ming-Hsien TU