| 摘要 |
<p>The present invention relates to a readout circuit (1) for digitizing an analog input signal of an imaging device into a digital output. The readout circuit comprises a pixel signal input (2) for providing an analog signal from at least one imaging pixel element, a variable gain amplifier 3 for providing an amplified signal of the analog signal by a gain factor, and a first analog to digital conversion means (4) for quantizing the analog signal into a first digital signal. The circuit further comprises a control means (6) for setting the gain factor of the variable gain amplifier by taking into account the first digital signal, and a second analog to digital conversion means (5) for quantizing the amplified signal into a second digital signal. The circuit also comprises a digital output (7) for outputting a signal determined as function of at least the second digital signal.</p> |
