QR barcode decoding chip and decoding method thereof
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United States of America Patent
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Oct 8, 2013
Grant Date -
Dec 1, 2011
app pub date -
May 31, 2011
filing date -
Jun 1, 2010
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Abstract
An exemplary QR barcode decoding chip includes a characteristic searching unit configured for searching for a characteristic pattern in the barcode image to determine pixel coordinates of the characteristic pattern; a barcode parameter acquiring unit configured for acquiring a barcode parameter according to the pixel coordinates of the characteristic pattern; a version/format parameter acquiring unit configured for acquiring a version/format parameter; a correction characteristic acquiring unit configured for searching for a characteristic position in the barcode image and acquiring a correction characteristic according to the characteristic position; a module information processing unit configured for calculating a grayscale value corresponding to a module according to the version/format parameter, the barcode parameter and the correction characteristic; a binarizing unit configured for binarizing the module; a codeword extracting unit configured for extracting a codeword according to the binarized module; and an error correction and decoding unit configured for decoding the codeword.
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