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AssigneeMicrosoft Corporation
InventorsJian Wang, Zhouchen Lin, Yue Li, Chunhui Zhang, Yingnong Dang, Jiang Wu, Qiang Wang
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In accordance with embodiments of the invention, global metadata, such as a document identifier, which may be a globally unique identifier, is embedded into an embedded interactive code document by combining a first m-array and a plurality of copies of the first m-array to generate a combined m-array with encoded global metadata such that respective start positions (xd,yd)i of the plurality of copies of the first m-array in the combined m-array are each shifted, by respective amounts that are based on respective portions of the global metadata, relative to a start position of the first m-array in the combined m-array. Global metadata may be decoded from the combined m-array by determining the respective amounts by which the plurality of copies of the first m-array are shifted, relative to the first m-array, in the combined m-array and by combining the respective amounts to produce a decoded value of the global metadata.
A system that embeds global metadata into an embedded interactive code document, the system comprising:
A system that decodes global metadata from an embedded interactive code document, the system comprising:
A computer-readable medium containing computer-executable instructions for embedding global metadata into an embedded interactive code document by combining a first m-array and a plurality of copies of the first m-array to generate a combined m-array with encoded global metadata such that respective start positions (xd,yd)i of the plurality of copies of the first m-array in the combined m-array are each shifted, by respective amounts that are based on respective portions of the global metadata, relative to a start position of the first m-array in the combined m-array.
Dependencies are inferred from the claim text.