| 摘要 |
A light-to-frequency converter includes a switch ( 130 ) connected in series with a reverse-biased photodiode ( 120 ). A node ( 150 ) in the current path through the switch and the photodiode is connected to the input of a Schmidt trigger ( 160 ), whose output controls the switch. New techniques are provided for motion compensation, partial readouts, dark current elimination, non-destructive testing, and sensing the state of a memory cell.
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