| 摘要 |
A solid-state imaging apparatus for motion detection that detects motion based on differences between pixel frames to make external image comparison processing unnecessary and to reduce erroneous detection of motion is disclosed. The solid-state imaging apparatus includes a plurality of photoreceptive units arranged in a matrix of rows and columns, a plurality of vertical read lines disposed on each column of the plurality of photoreceptive units, a vertical transfer circuit that sequentially selects a specified row of the plurality of photoreceptive units and successively outputs to a vertical read line a previous pixel output, saved from a previous exposure of incident light on the photoreceptors, and a current pixel output newly generated from exposure of incident light on the photoreceptors, a comparison circuit that compares the previous pixel output and the current pixel output transferred by time division via the vertical read lines, a horizontal transfer circuit which serially transfers the comparison circuit's signals, and a logical calculation circuit that performs a logical calculation on the comparison circuit's signals and reduces the isolated regions of logical change to provide an object motion signal.
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