Patent ID: 7511754

Claim:
An electrical sensor apparatus comprising: an array of transducer elements arranged in a (sÃ—t) matrix where s is the number of rows and t is the number of columns, each transducer element adapted to produce an electrical indication in response to external stimuli incident thereon; a plurality, t, of first stage amplifiers, each first stage amplifier connected to a column of transducer elements; a plurality, u, of data bus lines, each data line configured to one of the stages of the first amplifiers and each of the bus lines having a substantially similar time, d, for settling an electrical indication, wherein: t >( nÃ—u ), where n is a positive integer, and wherein a minimum of u is determined by the formula: u=d/T, where T is a clock period; a plurality, u, of second stage amplifiers for generating outputs indicative of the external stimuli, each second stage amplifier being connected to a data bus line, wherein the plurality, t, of first stage amplifiers is configured to drive the data bus lines cyclically so that each data bus line is driven at least once, with an interval between two successive bus drives being at least the time, d for an electrical indication to settle.