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G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
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Physics & Mathematics
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General Physics & Mathematics
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Engineering & Computer Science
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Theoretical Computer Science
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Signal Processing For Digital Recording And Reproducing
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