Resources Contact Us Home
2-stage A/D converter and image sensor using the same

Image Number 12 for United States Patent #7227490.

In a conventional CMOS image sensor, an A/D converter for performing A/D conversion at high-speed arranges the A/D converter elements in columns so as to operate in parallel, and has low resolution in the order of 9 or so bits. The present invention provides an A/D converter for an image sensor, which performs a part of the A/D conversion functions by using a noise cancellation circuit in columns and performs amplification simultaneously with this, thereby obtaining a high signal noise ratio (SNR) and implementing an A/D converter with a high resolution along with the A/D conversion section in a subsequent stage.

  Recently Added Patents
Pet bed
Electromagnetic shield for a passive electronic component in an active medical device implantable lead
Sensing during magnetic resonance imaging
Computer system for routing package deliveries
Print system
Data scrambling in memory devices
  Randomly Featured Patents
Method and apparatus for augmented reality shopping assistant
Tensioning means for printing ribbon cassette
Surrogate hashing
Contour emphasis circuit
Channel speaker
Photoconductor overcoat layer
Portable television camera-recorder and method for operating same
Main body of power gun
Uninterruptable power supply with energy control
Adaptor for receiving the head of a watch