Patent ID: 7511755

Claim:
An imaging apparatus, comprising: a plurality of pixels, each for outputting at different times, a reset signal and a pixel signal; a read out circuit comprising: a sampling circuit comprising: a column line for receiving said reset and pixel signals; a first sampling capacitor, said first sampling capacitor having a first plate for receiving said reset and pixel signals from said column line and a second plate for outputting a first output signal based on a voltage difference of said reset and pixel signals; and a first output line for receiving said first output signal; and an amplifying circuit, configured to amplify said first output signal into a second output signal, said amplifying circuit comprising: an amplifier having a first input coupled to said first output line and a second input coupled to a source of a reference voltage; a feedback network, coupled between an output of said amplifier and said first input; and a second output line, coupled in parallel to a first analog-to-digital converter and a second analog-to-digital converter.