Patents by Inventor Cui Li Chen

Cui Li Chen 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).

  • Sense amplifier
    Patent number: 8797789
    Abstract: Embodiments of the invention provide a sense amplifier, a SRAM chip comprising the sense amplifier and a method for conducting read operation on a SRAM cell. The sense amplifier according to an embodiment of the invention comprises a cross coupling circuit, a tail current transistor and an output stage, wherein source of the tail current transistor is connected to a negative level. With the scheme according to embodiments of the invention, speed of the sense amplifier can be enhanced, thereby increasing read speed of the SRAM chip.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: August 5, 2014
    Assignee: International Business Machines Corporation
    Inventors: Cui Li Chen, Xiao Li Hu, Qing Q L Li, Rui Tu
  • SENSE AMPLIFIER
    Publication number: 20130028007
    Abstract: Embodiments of the invention provide a sense amplifier, a SRAM chip comprising the sense amplifier and a method for conducting read operation on a SRAM cell. The sense amplifier according to an embodiment of the invention comprises a cross coupling circuit, a tail current transistor and an output stage, wherein source of the tail current transistor is connected to a negative level. With the scheme according to embodiments of the invention, speed of the sense amplifier can be enhanced, thereby increasing read speed of the SRAM chip.
    Type: Application
    Filed: July 18, 2012
    Publication date: January 31, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Cui Li Chen, Xiao Li Hu, Qing QL LI, Rui Tu