Sharp Kabushiki Kaisha Corporation

Hideyuki Ichihara

Toshimasa Kuchii

Koji Isodono

A defect detecting device includes: a block generating section dividing an inspection image in which a defective region will be detected into a plurality of blocks; an intra-block sum calculating section calculating an intra-block sum for each of the blocks generated by the block generating section, the intra-block sum being a sum of pixel data for pixels in that block; and a statistical processing section and a defect determining section determining whether there exists a defective region by determining through statistical processing whether the intra-block sums have an outlier. Accordingly, the device determines whether there is a defective region in a digital image quickly and using small circuitry.

Defect detecting device, image sensor device, image sensor module, image processing device, digital image quality tester, and defect detecting method

A logic circuit test apparatus for testing a logic circuit having a plurality of input terminals and a plurality of output terminals, the logic circuit test apparatus including: a common test signal generating circuit which groups the input terminals of the logic circuit on the basis of logic states of original test signals to be applied to the respective input terminals of the logic circuit and outputs common test signals from common test signal output terminals thereof smaller in number than the input terminals of the logic circuit; and an input connection switching circuit which switches connections of the common test signal output terminals of the common test signal generating circuit with the input terminals of the logic circuit so as to convert the common test signals into the original test signals and apply the original test signals to the respective input terminals of the logic circuit.

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Hiroshima, Japan

Hideyuki Ichihara