Patents by Inventor Shengdong Hu

Shengdong Hu 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: 11716091
    Abstract: A multi-bit resolution sub-pipeline structure for measuring a jump magnitude of a transmission curve, comprising: a sub-analog-to-digital converter having n-bit resolution configured to quantize input analog voltage signals and output digital voltage signals; a sub-digital-to-analog converter having n-bit resolution configured to convert the digital voltage signals output by the sub-analog-to-digital converter into corresponding analog voltage signals; a decoder having n-bit resolution configured to decode an n-bit binary input signal; and a switched-capacitor amplification unit configured to, when in a normal mode, perform sampling and residue amplification on the input analog voltage signals; and when in a test mode, measure the jump magnitude of the transmission curve corresponding to each decision level. Magnitude measurement of a transmission curve is performed within 2n clock periods, th and a measurement result is sent to a back-end digital domain of the A/D converter for correction.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: August 1, 2023
    Assignees: No. 24 Research Institute Of China Electronics Technology Group Corporation, Chongqing GigaChip Technology Co., Ltd.
    Inventors: Tao Liu, Jian'an Wang, Yuxin Wang, Shengdong Hu, Zhou Yu, Minming Deng, Daiguo Xu, Lu Liu, Dongbing Fu, Jun Luo, Xu Wang, Yan Wang, Zicheng Xu
  • Publication number: 20220224350
    Abstract: A multi-bit resolution sub-pipeline structure for measuring a jump magnitude of a transmission curve, comprising: a sub-analog-to-digital converter having n-bit resolution configured to quantize input analog voltage signals and output digital voltage signals; a sub-digital-to-analog converter having n-bit resolution configured to convert the digital voltage signals output by the sub-analog-to-digital converter into corresponding analog voltage signals; a decoder having n-bit resolution configured to decode an n-bit binary input signal; and a switched-capacitor amplification unit configured to, when in a normal mode, perform sampling and residue amplification on the input analog voltage signals; and when in a test mode, measure the jump magnitude of the transmission curve corresponding to each decision level. Magnitude measurement of a transmission curve is performed within 2n clock periods, th and a measurement result is sent to a back-end digital domain of the A/D converter for correction.
    Type: Application
    Filed: January 7, 2020
    Publication date: July 14, 2022
    Applicants: NO.24 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION, Chongqing GigaChip Technology Co., Ltd.
    Inventors: Tao LIU, Jian'an WANG, Yuxin WANG, Shengdong HU, Zhou YU, Minming DENG, Daiguo XU, Lu LIU, Dongbing FU, Jun LUO, Xu WANG, Yan WANG, Zicheng XU
  • Patent number: 11362666
    Abstract: The present disclosure provides a low-jitter frequency division clock circuit, including: a clock control signal generation circuit, to generate clock signals having different phases; a low-level narrow pulse width clock control signal generation circuit, to generate a low-level narrow pulse width clock control signal; a high-level narrow pulse width clock control signal generation circuit, to generate a high-level narrow pulse width clock control signal; and a frequency division clock generation circuit, to generate a frequency division clock signal according to low-level narrow pulse width clock control signal and high-level narrow pulse width clock control signal. The delay from a clock input end to an output end of low-jitter frequency division clock circuit is up to three logic gates.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: June 14, 2022
    Assignee: NO. 24 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION
    Inventors: Tao Liu, Jian'an Wang, Yuxin Wang, Guangbing Chen, Dongbing Fu, Ruzhang Li, Shengdong Hu, Zhengping Zhang, Jun Luo, Daiguo Xu, Minming Deng, Yan Wang
  • Publication number: 20210297080
    Abstract: The present disclosure provides a low-jitter frequency division clock circuit, including: a clock control signal generation circuit, to generate clock signals having different phases; a low-level narrow pulse width clock control signal generation circuit, to generate a low-level narrow pulse width clock control signal; a high-level narrow pulse width clock control signal generation circuit, to generate a high-level narrow pulse width clock control signal; and a frequency division clock generation circuit, to generate a frequency division clock signal according to low-level narrow pulse width clock control signal and high-level narrow pulse width clock control signal. The delay from a clock input end to an output end of low-jitter frequency division clock circuit is up to three logic gates.
    Type: Application
    Filed: December 13, 2018
    Publication date: September 23, 2021
    Applicant: NO.24 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION
    Inventors: Tao LIU, Jian'an WANG, Yuxin WANG, Guangbing CHEN, Dongbing FU, Ruzhang LI, Shengdong HU, Zhengping ZHANG, Jun LUO, Daiguo XU, Minming DENG, Yan WANG
  • Patent number: 10658496
    Abstract: The present disclosure relates to a high-speed superjunction lateral insulated gate bipolar transistor, and belongs to the technical field of semiconductor power devices. Fast turn-off can be achieved by replacing the lightly doped substrate of the existing bulk silicon superjunction lateral insulated gate bipolar transistor with heavily doped substrate, breakdown voltage of the device is ensured by reasonably setting the total number of impurities in each drift region of the over junction-sustaining voltage layer, and further application thereof in integrated circuits is realized by providing the semiconductor second substrate region and the semiconductor isolation region. A high speed superjunction laterally insulated gate bipolar transistor according to the present disclosure solves the contradiction between cost of the superjunction laterally insulated gate bipolar transistor and achievement of fast turn-off on a bulk silicon substrate.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: May 19, 2020
    Assignee: Chongqing University
    Inventors: Zhi Lin, Qi Yuan, Shu Han, Shengdong Hu, Jianlin Zhou, Fang Tang, Xichuan Zhou
  • Publication number: 20190252531
    Abstract: The present disclosure relates to a high-speed superjunction lateral insulated gate bipolar transistor, and belongs to the technical field of semiconductor power devices. Fast turn-off can be achieved by replacing the lightly doped substrate of the existing bulk silicon superjunction lateral insulated gate bipolar transistor with heavily doped substrate, breakdown voltage of the device is ensured by reasonably setting the total number of impurities in each drift region of the over junction-sustaining voltage layer, and further application thereof in integrated circuits is realized by providing the semiconductor second substrate region and the semiconductor isolation region. A high speed superjunction laterally insulated gate bipolar transistor according to the present disclosure solves the contradiction between cost of the superjunction laterally insulated gate bipolar transistor and achievement of fast turn-off on a bulk silicon substrate.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 15, 2019
    Inventors: Zhi LIN, Qi YUAN, Shu HAN, Shengdong HU, Jianlin ZHOU, Fang TANG, Xichuan ZHOU