Patents by Inventor Chengying Chen

Chengying 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).

  • Analogic front circuit for medical device
    Patent number: 8767988
    Abstract: An analog front circuit for a medical device includes an automatic gain control loop and a 2-order-3-bit-quantization Sigma-Delta analog-to-digital converter. The automatic gain control loop is configured to implement automatic control of loop gain and output an analog signal to the 2-order-3-bit-quantization Sigma-Delta analog-to-digital converter. The 2-order-3-bit-quantization Sigma-Delta analog-to-digital converter is configured to convert the analog signal output from the automatic gain control loop into a digital code and output the digital code to a DSP for processing.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: July 1, 2014
    Assignee: Institute of Microelectronics, Chinese Academy of Sciences
    Inventors: Chengying Chen, Yong Hei, Jun Fan, Jianhua Jiang
  • SOI ANALOGIC FRONT CIRCUIT FOR MEDICAL DEVICE
    Publication number: 20130287238
    Abstract: The present disclosure provides an SOI analog front circuit for a medical device, characterized in that it comprises an automatic gain control loop and a 2-order-3-bit-quantization Sigma-Delta analog-to-digital converter, wherein: the automatic gain control loop is configured to implement automatic control of loop gain and output an analog signal to the 2-order-3-bit-quantization Sigma-Delta analog-to-digital converter; and the 2-order-3-bit-quantization Sigma-Delta analog-to-digital converter is configured to convert the analog signal output from the automatic gain control loop into a digital code and output the digital code to a DSP for processing. The analog front circuit for the medical hearing aid device may be implemented by integration of three comparators, an analog-digital hybrid automatic gain control loop and a 2-order-3-bit-quantization Sigma-Delta analog-to-digital converter on a single chip using SOI process with high reliability and low power consumption.
    Type: Application
    Filed: June 18, 2012
    Publication date: October 31, 2013
    Applicant: Institute of Microelectronics, Chinese Academy of Sciences
    Inventors: Chengying Chen, Yong Hei, Jun Fan, Jianhua Jiang