Patents by Inventor Zhi Chao Du

Zhi Chao Du 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: 11676663
    Abstract: A memory system includes a memory cell array and a controller coupled to the memory cell array. The controller is configured to control applying a first program voltage to a word line to program memory cells in the memory cell array, the memory cells being coupled to the word line, and in response to receiving a suspend command, control applying a positive bias discharge voltage to the word line when the first program voltage ramps down.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: June 13, 2023
    Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
    Inventors: Zhi Chao Du, Yu Wang, Haibo Li, Ke Jiang, Ye Tian
  • Publication number: 20220139462
    Abstract: A memory system includes a memory cell array and a controller coupled to the memory cell array. The controller is configured to control applying a first program voltage to a word line to program memory cells in the memory cell array, the memory cells being coupled to the word line, and in response to receiving a suspend command, control applying a positive bias discharge voltage to the word line when the first program voltage ramps down.
    Type: Application
    Filed: January 11, 2022
    Publication date: May 5, 2022
    Inventors: Zhi Chao Du, Yu Wang, Haibo Li, Ke Jiang, Ye Tian
  • Patent number: 11250914
    Abstract: A control method, for a memory array, the control method comprises programming the bit-cell of the memory array in a programming stage; and discharging the bit-cell of the memory array in a discharge stage; wherein the programming stage comprises: programming the bit-cell of the memory array with a plurality of programming voltage pulses; wherein the discharge stage comprises: isolating a select line of the bit-cell of the memory array; and generating a programming voltage pulse to the bit-cell of the memory array; wherein the programming stage can be suspended to a suspend stage by a suspend command after the discharge stage; wherein the suspend command is received during one of the plurality of programming voltage pulse.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: February 15, 2022
    Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
    Inventors: Zhi Chao Du, Yu Wang, Haibo Li, Ke Jiang, Ye Tian
  • Publication number: 20210366552
    Abstract: A control method, for a memory array, the control method comprises programming the bit-cell of the memory array in a programming stage; and discharging the bit-cell of the memory array in a discharge stage; wherein the programming stage comprises: programming the bit-cell of the memory array with a plurality of programming voltage pulses; wherein the discharge stage comprises: isolating a select line of the bit-cell of the memory array; and generating a programming voltage pulse to the bit-cell of the memory array; wherein the programming stage can be suspended to a suspend stage by a suspend command after the discharge stage; wherein the suspend command is received during one of the plurality of programming voltage pulse.
    Type: Application
    Filed: February 26, 2021
    Publication date: November 25, 2021
    Inventors: Zhi Chao Du, Yu Wang, Haibo Li, Ke Jiang, Ye Tian
  • Patent number: 10978158
    Abstract: A control method, for a memory array, the control method comprises programming the bit-cell of the memory array in a programming stage; and discharging the bit-cell of the memory array in a discharge stage; wherein the programming stage comprises: programming the bit-cell of the memory array with a plurality of programming voltage pulses; wherein the discharge stage comprises: isolating a select line of the bit-cell of the memory array; and generating a programming voltage pulse to the bit-cell of the memory array; wherein the programming stage can be suspended to a suspend stage by a suspend command after the discharge stage; wherein the suspend command is received during one of the plurality of programming voltage pulse.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: April 13, 2021
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventors: Zhi Chao Du, Yu Wang, Haibo Li, Ke Jiang, Ye Tian
  • Publication number: 20200348932
    Abstract: A memory control system includes a memory interface, a microcontroller, and a sequence processing unit. The memory interface circuit receives a memory operation command and generates a plurality of operation instructions according to the memory operation command. The microcontroller is coupled to the memory interface circuit . The microcontroller receives the plurality of operation instructions and generates a plurality of task instructions according a scheduling algorithm through a predetermined protocol. The sequence processing unit is coupled to the microcontroller. The sequence processing unit receives the plurality of task instructions through the predetermined protocol, and controls a plurality of circuits of a memory device according to the plurality of task instructions with at least one finite state machine of the sequence processing unit.
    Type: Application
    Filed: June 14, 2019
    Publication date: November 5, 2020
    Inventors: Huang Peng Zhang, XIANG FU, Qi Wang, Zhi Chao Du, Hua Min Cao, Xin Yun Huang, Wen Wen Dong, Shu Bing Xu