E.i. Dupont De Nemours and Company

Dalsa Corporation

John G Elias

Jerald D Lee

William E Wolf

Bennett H Rockney

Peter A Jansson

Graham A Jullien

James W Roberts

Allan P Jansson

A defect detection system includes a video camera with defect detection circuits for detecting defects in video signals being outputted by corresponding sections of an array sensor such as a TDI CCD two-dimensional array sensor. Each defect detection circuit includes a subtraction circuit for subtracting a prior stored pixel from an incoming pixel to generate a difference. Comparators compare the difference with positive and negative limits defining an acceptable range of difference values. The prior stored pixel is updated to the succeeding pixel only when the difference value is acceptable. Memories store the defect pixels from the respective detection circuits along with X-coordinates and end of line bits. The memories are sequentially read up to their end of line bits, and the defect pixel values along with coordinates expanded to include section indicating bits are transferred from the camera to further processing facilities.

High speed defect detection apparatus having defect detection circuits

A laser scanning apparatus is characterized by a curved film-receiving field with a conforming photodetector assembly. In one embodiment, the photodetector assembly comprises a plurality of semiconductor elements. In other embodiments, the photodetector assembly includes a photodetector device mounted in light transmissive engagement with a transparent block for receiving light passed through a radiographic film.

Photodetector assembly for a laser scanning apparatus

A data transmission bus arrangement in which the transceiver arrays through which a main bus communicates with functional circuit modules are physically disposed on the same substrate that carries the bus.

Bus structure having constant electrical characteristics

Describes a method and system for improving the ability to quantitate the amount of flux or material in localized collections of such flux or material typically called a 'spot'. Quantitation of spots using a software algorithm which utilizes reduction volumes for quantitating peaks in a spot image of an electrophoresis gel is disclosed. The operating system includes a laser gel scanner module, a computer module, system peripherals, and analysis software.

Spot quantitation

Describes a method and system for improving the ability to quantitate the amount of flux or material in localized collections of such flux or material typically called a 'spot'. Quantitation of spots using a software algorithm which utilizes models in two opposite senses for quantitating peaks in a spot image of an electrophoresis gel is disclosed. The operating system includes a laser gel scanner module, a computer module, system peripherals, and analysis software.

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Wilmington, DE, United States of America

John G Elias