Patent ID: 7948542

Claim:
An imaging system, comprising: an array of pixels having rows and columns, said array connected to transduce incident radiation into an electrical output signal; a vertical scanner connected to communicate with said rows of pixels; a horizontal scanner connected to communicate with said columns of pixels; a column buffer connected to process and temporarily store signals from said columns of pixels, said column buffer comprising: a plurality of column amplifiers, each of said columns of pixels associated with a corresponding one of said column amplifiers; and a plurality of line drivers, each of said line drivers connected between the output of at least one of said column amplifiers and a bus line to transmit signals from said column amplifier onto said bus line, each of said line drivers configured in a negative feedback loop and having a bus switch arranged within said feedback loop such that the settling time of said line driver is less than the settling time of a similar line driver having a bus switch outside a feedback loop; and a control circuit connected to manage the operation of said column buffer.