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14:01 Nov 5, 2008
English to German translations [PRO] Tech/Engineering - Engineering (general)
1. A method for operating a time-of-f light imager pixel, said pixel having a light- sensitive region, a first and a second integration gate associated with said light-sensitive region, a first and a second sense node, a first output gate arranged between said first integration gate and said first sense node and a second output gate arranged between said second integration gate and said second sense node, said method comprising the steps of: a) exposing said light-sensitive region to light so as to optically generate charge carriers; b) collecting said charge carriers alternatively under said first and second integration gates; c) adjusting voltages of said first and second output gates and said first and second integration gates, thereby transferring a first portion of said charge carriers from said first integration gate into said first sense node and a second portion from said second integration gate onto said second sense node; d) calculating time-of-f light information based on said first and second portions of charge carriers; characterised by the steps: e) adjusting at least one voltage so as to transfer, if respectively said first and/or second integration gate is close to or in saturation, an amount of charge carriers form said first and/or second integration gate onto said first and/or second sense node; and f) testing whether a voltage change exceeding a given threshold was thereby provoked on said first and/or second sense node.