Patents by Inventor Jackson Ding

Jackson Ding 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: 8854106
    Abstract: A level shifting circuit includes a current mirror that generates a first bias current and a second bias current (proportional to the first bias current with a first ratio). A first level shifter is coupled between a first input node (receiving a first input signal) and a first output node coupled to an input of the current mirror. The first level shifter applies a first voltage variation to the first input signal in response to the first bias current. A second level is coupled between a second input node (receiving a second input signal) and a second output node coupled to an output of the current mirror. The second level shifter applies a second voltage variation (associated with the first voltage variation) to the second input signal in response to the second bias current.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: October 7, 2014
    Assignee: STMicroelectronics R&D (Shanghai) Co. Ltd.
    Inventors: Fei Wang, Snow Qi, Jackson Ding
  • Patent number: 8854119
    Abstract: A circuit includes a charge pump, a first level shifter, a second level shifter, a voltage follower and a current mirror. The charge pump is configured to generate a voltage difference between the input node and the output node. The first level shifter is coupled to the charge pump output and configured to apply a first voltage variation to the charge pump output in response to a bias current. The second level shifter is coupled to the input node and configured to apply a second voltage variation to the charge pump input. The voltage follower is configured to equalize outputs from the first and second level shifters and provide a difference current which is multiplied by the current multiplier to generate a charging current applied to the charge pump.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: October 7, 2014
    Assignee: STMicroelectronics R&D (Shanghai) Co. Ltd.
    Inventors: Ming Jiang, Jackson Ding
  • Publication number: 20140009220
    Abstract: A circuit includes a charge pump, a first level shifter, a second level shifter, a voltage follower and a current mirror. The charge pump is configured to generate a voltage difference between the input node and the output node. The first level shifter is coupled to the charge pump output and configured to apply a first voltage variation to the charge pump output in response to a bias current. The second level shifter is coupled to the input node and configured to apply a second voltage variation to the charge pump input. The voltage follower is configured to equalize outputs from the first and second level shifters and provide a difference current which is multiplied by the current multiplier to generate a charging current applied to the charge pump.
    Type: Application
    Filed: June 24, 2013
    Publication date: January 9, 2014
    Inventors: Ming Jiang, Jackson Ding
  • Publication number: 20140009201
    Abstract: A level shifting circuit includes a current mirror that generates a first bias current and a second bias current (proportional to the first bias current with a first ratio). A first level shifter is coupled between a first input node (receiving a first input signal) and a first output node coupled to an input of the current mirror. The first level shifter applies a first voltage variation to the first input signal in response to the first bias current. A second level is coupled between a second input node (receiving a second input signal) and a second output node coupled to an output of the current mirror. The second level shifter applies a second voltage variation (associated with the first voltage variation) to the second input signal in response to the second bias current.
    Type: Application
    Filed: June 24, 2013
    Publication date: January 9, 2014
    Inventors: Fei Wang, Snow Qi, Jackson Ding