Invention Grant
US07804438B2 Image sensors and dual ramp analog-to-digital converters and methods 有权
图像传感器和双斜道模数转换器和方法

  • Patent Title: Image sensors and dual ramp analog-to-digital converters and methods
  • Patent Title (中): 图像传感器和双斜道模数转换器和方法
  • Application No.: US12434602
    Application Date: 2009-05-01
  • Publication No.: US07804438B2
    Publication Date: 2010-09-28
  • Inventor: Alexander Krymski
  • Applicant: Alexander Krymski
  • Agency: Foley & Lardner LLP
  • Main IPC: H03M1/82
  • IPC: H03M1/82
Image sensors and dual ramp analog-to-digital converters and methods
Abstract:
Dual ramp analog-to-digital converters and methods allow for performing analog-to-digital conversion of an analog signal. Various dual ramp analog-to-digital converters and methods allow for applying the analog signal and a coarse ramp to a same input of a comparator, and applying a fine ramp to another input of the comparator. Some dual ramp analog-to-digital converters and methods allow for applying the analog signal, a coarse ramp, and a fine ramp to a same input of a comparator. Various dual ramp analog-to-digital converters and methods allow for applying the analog signal to an input of a first comparator, applying a coarse ramp to the input of the first comparator through a coarse ramp switch, applying the analog signal to an input of a second comparator, and applying a fine ramp to another input of the second comparator.
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