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
Resist underlayer film forming composition for lithography, containing aromatic fused ring-containing resin
Use of LPA for encouraging pregnancy, and fertility agent
Semiconductor device and manufacturing method thereof
Selection of hash lookup keys for efficient retrieval
Modulators of cystic fibrosis transmembrane conductance regulator
Wine bottle
  Randomly Featured Patents
Apparatus for measuring a cutting blade width in a cutting apparatus
Semiconductor device
Anti-FGF19 antibodies and methods using same
Modular synchronizer assembly
Method for preparing reactive metal surface
Lead frame for leaded semiconductor chip carriers
Metal-clad cable with foraminous coded label
Engine control system for torque management in a hybrid powertrain system
Apparatus and method for re-encrypting data without unsecured exposure of its non-encrypted format
Manufacturing design and process analysis system