Patents by Inventor Bond Y. Ying

Bond Y. Ying 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).

  • Digital correlated double sampling using dual analog path
    Patent number: 7456879
    Abstract: An imaging system implements digital correlated double sampling (CDS) using dual channels. One channel converts reset voltages from pixel sensors to digital reset values, while the other channel converts integrated voltages from pixel sensors to digital integrated values. Timing of an imaging process with digital CDS can accordingly be the same as the timing for an imaging process without digital CDS, regardless of the length of the exposure time. Accordingly, the imaging time and the frame rate for moving images do not suffer when digital CDS is used to improve image quality.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: November 25, 2008
    Assignee: Aptina Imaging Corporation
    Inventors: Yan Ping Lim, Bond Y. Ying
  • CMOS image sensor with variable conversion gain
    Patent number: 7327393
    Abstract: An image sensor pixel has variable conversion gain to prevent overexposure of the pixel without reducing the exposure period. Under dim lighting conditions, the pixel operates with high conversion gain and is highly sensitive to light. When the incident light is bright, the pixel switches into a low conversion gain, low-sensitivity mode. The variable conversion gain is implemented by connecting a variable capacitive load in parallel with the photodiode of the image sensor pixel. When the incident light intensity exceeds a certain threshold, the variable capacitive load is increased to allow the photodiode to absorb more light. Likewise, the variable capacitive load is decreased when the incident light intensity is below a certain threshold.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: February 5, 2008
    Assignee: Micron Technology, Inc.
    Inventors: Bond Y. Ying, Richard L Baer
  • CMOS image sensor with variable conversion gain
    Publication number: 20040079977
    Abstract: An image sensor pixel has variable conversion gain to prevent overexposure of the pixel without reducing the exposure period. Under dim lighting conditions, the pixel operates with high conversion gain and is highly sensitive to light. When the incident light is bright, the pixel switches into a low conversion gain, low-sensitivity mode. The variable conversion gain is implemented by connecting a variable capacitive load in parallel with the photodiode of the image sensor pixel. When the incident light intensity exceeds a certain threshold, the variable capacitive load is increased to allow the photodiode to absorb more light. Likewise, the variable capacitive load is decreased when the incident light intensity is below a certain threshold.
    Type: Application
    Filed: October 29, 2002
    Publication date: April 29, 2004
    Inventors: Bond Y. Ying, Richard L. Baer