Methods and apparatus for one-dimensional signal extraction
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United States of America Patent
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Dec 22, 2015
Grant Date -
Jun 27, 2013
app pub date -
Dec 23, 2011
filing date -
Dec 23, 2011
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Abstract
Methods and apparatus are disclosed for extracting a one-dimensional digital signal from a two-dimensional digital image along a projection line. Disclosed embodiments provide an image memory in which is stored the digital image, a working memory, a direct memory access controller, a table memory that holds a plurality of transfer templates, and a processor. The processor selects a transfer template from the table memory responsive to an orientation of the projection line, computes a customized set of transfer parameters from the selected transfer template and parameters of the projection line, transmits the transfer parameters to the direct memory access controller, commands the direct memory access controller to transfer data from the image memory to the working memory as specified by the transfer parameters, and computes the one-dimensional digital signal using at least a portion of the data transferred by the direct memory access controller into the working memory.
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