Patent ID: 7796172

Claim:
An imaging system of with column correction having a first column comprising: a photodetector; a readout means coupled to the photodetector and configured to transfer charge from the photodetector; a select means coupled to the readout means and configured to transfer charge from the readout means; an address circuit coupled to the first column through the select means and configured to compare an address to a plurality of addresses associated with the first column, and turn on the select means for the first column if the address matched one of the plurality of addresses associated with the first column and if the address circuit received a corrected enable signal indicating that the first column is not defective wherein the address circuit further comprises: an address generator configured to generate the address; and a decoder circuit coupled to the address generator and the first column through the gate of the select transistor, the decoder circuit configured to receive and decode the address and receive the corrected enable signal, and further configured to turn on the select means if the decoder received the corrected enable signal indicating that the first column is not defective and received the address that matched one of the plurality of addresses associated with the first column; and a correction circuit coupled to the address circuit and configured to generate the corrected enable signal indicating that the first column is not defective, wherein the correction circuit further comprises: a register coupled to the decoder circuit and configured to receive defective column information and output to the decoder the corrected enable signal.