Patents by Inventor Xiaozhou Qian

Xiaozhou Qian 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: 9633735
    Abstract: A system and method to inhibit the erasing of a portion of a sector of split gate flash memory cells while allowing the remainder of the sector to be erased is disclosed. The inhibiting is controlled by control logic that applies one or more bias voltages to the portion of the sector whose erasure is to be inhibited.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: April 25, 2017
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Jinho Kim, Nhan Do, Yuri Tkachev, Kai Man Yue, Xiaozhou Qian, Ning Bai
  • Patent number: 9620235
    Abstract: A self-timer for a sense amplifier in a memory device is disclosed.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 11, 2017
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Yao Zhou, Kai Man Yue, Xiaozhou Qian, Bin Sheng
  • Patent number: 9601500
    Abstract: A memory device that includes a plurality of ROM cells each having spaced apart source and drain regions formed in a substrate with a channel region therebetween, a first gate disposed over and insulated from a first portion of the channel region, a second gate disposed over and insulated from a second portion of the channel region, and a conductive line extending over the plurality of ROM cells. The conductive line is electrically coupled to the drain regions of a first subgroup of the ROM cells, and is not electrically coupled to the drain regions of a second subgroup of the ROM cells. Alternately, a first subgroup of the ROM cells each includes a higher voltage threshold implant region in the channel region, whereas a second subgroup of the ROM cells each lack any higher voltage threshold implant region in the channel region.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: March 21, 2017
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Jinho Kim, Vipin Tiwari, Nhan Do, Xian Liu, Xiaozhou Qian, Ning Bai, Kai Man Yue
  • Patent number: 9589630
    Abstract: The invention comprises a non-volatile memory device with a sensing amplifier that includes a current mirror comprising a pair of resistors.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: March 7, 2017
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Yao Zhou, Xiaozhou Qian, Guangming Lin
  • Patent number: 9564235
    Abstract: A trimmable current reference generator for use in a sense amplifier is disclosed.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 7, 2017
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Yao Zhou, Xiaozhou Qian, Kai Man Yue, Guangming Lin
  • Publication number: 20160379941
    Abstract: A memory device that includes a plurality of ROM cells each having spaced apart source and drain regions formed in a substrate with a channel region therebetween, a first gate disposed over and insulated from a first portion of the channel region, a second gate disposed over and insulated from a second portion of the channel region, and a conductive line extending over the plurality of ROM cells. The conductive line is electrically coupled to the drain regions of a first subgroup of the ROM cells, and is not electrically coupled to the drain regions of a second subgroup of the ROM cells. Alternately, a first subgroup of the ROM cells each includes a higher voltage threshold implant region in the channel region, whereas a second subgroup of the ROM cells each lack any higher voltage threshold implant region in the channel region.
    Type: Application
    Filed: September 7, 2016
    Publication date: December 29, 2016
    Inventors: Jinho Kim, Vipin Tiwari, Nhan Do, Xian Liu, Xiaozhou Qian, Ning Bai, Kai Man Yue
  • Publication number: 20160336072
    Abstract: The disclosed embodiments comprise a flash memory device and a method of programming the device in a way that reduces degradation of the device compared to prior art methods.
    Type: Application
    Filed: March 30, 2016
    Publication date: November 17, 2016
    Inventors: Xiaozhou Qian, Viktor Markov, Jong-Won Yoo, Xiao Yan Pi, Alexander Kotov
  • Publication number: 20160254060
    Abstract: An improved sensing circuit is disclosed that utilizes a bit line in an unused memory array to provide reference values to compare against selected cells in another memory array. A circuit that can perform a self-test for identifying bit lines with leakage currents about an acceptable threshold also is disclosed.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 1, 2016
    Inventors: XIAO YAN PI, XIAOZHOU QIAN, KAI MAN YUE, YAO ZHOU, YAOHUA ZHU
  • Publication number: 20160254269
    Abstract: A memory device that includes a plurality of ROM cells each having spaced apart source and drain regions formed in a substrate with a channel region therebetween, a first gate disposed over and insulated from a first portion of the channel region, a second gate disposed over and insulated from a second portion of the channel region, and a conductive line extending over the plurality of ROM cells. The conductive line is electrically coupled to the drain regions of a first subgroup of the ROM cells, and is not electrically coupled to the drain regions of a second subgroup of the ROM cells. Alternately, a first subgroup of the ROM cells each includes a higher voltage threshold implant region in the channel region, whereas a second subgroup of the ROM cells each lack any higher voltage threshold implant region in the channel region.
    Type: Application
    Filed: March 4, 2015
    Publication date: September 1, 2016
    Inventors: Jinho Kim, Vipin Tiwari, Nhan Do, Xian Liu, Xiaozhou Qian, Ning Bai, Kai Man Yue
  • Patent number: 9431072
    Abstract: A trimmable sense amplifier for use in a memory device is disclosed.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 30, 2016
    Assignee: SILICON STORAGE TECHNOLOGY, INC.
    Inventors: Yao Zhou, Xiaozhou Qian
  • Patent number: 9378834
    Abstract: A bitline regulator for use in a high speed flash memory system is disclosed. The bitline regulator is responsive to a set of trim bits that are generated by comparing the bias voltage of a bitline to a reference voltage.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: June 28, 2016
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Xiaozhou Qian, Yao Zhou, Bin Sheng, Jiaxu Peng, Yaohua Zhu
  • Patent number: 9373407
    Abstract: A non-volatile memory device with a current injection sensing amplifier is disclosed.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 21, 2016
    Assignee: Silicon Storage Technology, Inc.
    Inventors: Yao Zhou, Xiaozhou Qian, Ning Bai
  • Publication number: 20160027517
    Abstract: A system and method to inhibit the erasing of a portion of a sector of split gate flash memory cells while allowing the remainder of the sector to be erased is disclosed. The inhibiting is controlled by control logic that applies one or more bias voltages to the portion of the sector whose erasure is to be inhibited.
    Type: Application
    Filed: September 15, 2014
    Publication date: January 28, 2016
    Inventors: Jinho Kim, Nhan Do, Yuri Tkachev, Kai Man Yue, Xiaozhou Qian, Ning Bai
  • Publication number: 20160027519
    Abstract: A bitline regulator for use in a high speed flash memory system is disclosed. The bitline regulator is responsive to a set of trim bits that are generated by comparing the bias voltage of a bitline to a reference voltage.
    Type: Application
    Filed: September 15, 2014
    Publication date: January 28, 2016
    Inventors: Xiaozhou Qian, Yao Zhou, Bin Sheng, Jiaxu Peng, Yaohua Zhu
  • Publication number: 20160019972
    Abstract: A self-timer for a sense amplifier in a memory device is disclosed.
    Type: Application
    Filed: March 15, 2013
    Publication date: January 21, 2016
    Inventors: Yao Zhou, Kai Man Yue, Xiaozhou Qian, Bin Sheng
  • Publication number: 20160006444
    Abstract: A system and method for a digitally controlled delay-locked loop reference generator is disclosed.
    Type: Application
    Filed: September 15, 2014
    Publication date: January 7, 2016
    Inventors: Yao Zhou, Yuou Cao, Xiaozhou Qian, Ning Bai, Xinyan Xu
  • Publication number: 20150235711
    Abstract: A non-volatile memory device with a sensing amplifier (10) that includes a current mirror comprising a pair of resistors (20,30) and an operational amplifier (40) is disclosed.
    Type: Application
    Filed: October 3, 2013
    Publication date: August 20, 2015
    Inventors: Yao Zhou, Xiaozhou Qian, Guangming Lin
  • Publication number: 20150078082
    Abstract: A non-volatile memory device with a current injection sensing amplifier is disclosed.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 19, 2015
    Inventors: Yao Zhou, Xiaozhou Qian, Ning Bai
  • Publication number: 20150078081
    Abstract: A trimmable current reference generator for use in a sense amplifier is disclosed
    Type: Application
    Filed: March 15, 2013
    Publication date: March 19, 2015
    Inventors: Yao Zhou, Xiaozhou Qian, Kai Man Yue, Guangming Lin
  • Publication number: 20150055424
    Abstract: A trimmable sense amplifier for use in a memory device is disclosed.
    Type: Application
    Filed: March 15, 2013
    Publication date: February 26, 2015
    Applicant: Silicon Storage Technology, Inc.
    Inventors: Yao Zhou, Xiaozhou Qian