Patent ID: 8155428
Filing Date: 2012-04-10
Classification: G06T

Abstract:
1. A method of inspecting a memory array having memory blocks with a cell size and page break blocks between the memory blocks, the method comprising the steps of: imaging the memory array with an imaging sensor at a magnification so that the cell size is a whole integer pixel multiple within the imaging sensor to create an array image, processing the memory array image to identify memory block areas that include only the memory blocks, and page break areas that include only the page break blocks, comparing a first memory array image of a first memory block on a pixel by pixel basis to a second array image of a second memory block to determine differences between single pixel values in the first memory block and the second memory block in the memory block areas, where the first array image and the second array image are created at a common magnification using the imaging sensor, and flagging the single pixel differences as potential memory block defects.