Patents by Inventor Chris Zeleznik

Chris Zeleznik 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: 7569803
    Abstract: Apparatus, methods, and systems for providing a uniform bias voltage in a biasing circuit to a plurality of pixels. The biasing circuit has a plurality of switches, including a first switch connected at a first end of a capacitor and a second end connected to a first ground. A second switch is connected at a first end to a bias voltage reference and at a second end to a gate of a biasing transistor and a second end of the capacitor. A third switch is connected at a first end to the first end of the capacitor and at a second end to the drain of the biasing transistor and a second ground. The first and the second switch are closed and the third switch is open to set a bias voltage on the capacitor. The first and second switch are open and the third switch is closed when the bias voltage is set on the capacitor.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: August 4, 2009
    Assignee: Aptina Imaging Corporation
    Inventors: Hai Yan, Chris Zeleznik, Chiajen Lee
  • Publication number: 20090090844
    Abstract: Apparatus, methods, and systems for providing a uniform bias voltage in a biasing circuit to a plurality of pixels. The biasing circuit has a plurality of switches, including a first switch connected at a first end of a capacitor and a second end connected to a first ground. A second switch is connected at a first end to a bias voltage reference and at a second end to a gate of a biasing transistor and a second end of the capacitor. A third switch is connected at a first end to the first end of the capacitor and at a second end to the drain of the biasing transistor and a second ground. The first and the second switch are closed and the third switch is open to set a bias voltage on the capacitor. The first and second switch are open and the third switch is closed when the bias voltage is set on the capacitor.
    Type: Application
    Filed: October 4, 2007
    Publication date: April 9, 2009
    Inventors: Hai Yan, Chris Zeleznik, Chiajen Lee