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
Liquid crystal panel and liquid crystal display
Fabric care compositions comprising front-end stability agents
Simplified algorithm for abnormal situation prevention in load following applications including plugged line diagnostics in a dynamic process
Image reading apparatus
Combined high and low frequency stimulation therapy
Image capture system and method
Image processing device, image forming apparatus, and non-transitory computer readable recording medium
  Randomly Featured Patents
Check link assembly with adjustable detent feature
External orthopedic fixator with patient-operated mechanism
Radiator sand screen mounting arrangement
Method of forming a buried plug and an interconnection
Addressable tap units for cable television networks and related methods of remotely controlling bandwidth allocation in such networks
High quality dried bouillon and methods for preparation thereof
Media center home control system
Tennis racket grip
Cellular based aviation video system
Techniques for acquiring products from vendor websites