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A technology for encoding patterns and equipment, applied in graphics reading, user/computer interaction input/output, instruments, etc., can solve the problems of long transmission time and printer processing time
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AI technical title is built by PatSnap AI team. It summarizes the technical point description of the patent document.
A technology for encoding patterns and equipment, applied in graphics reading, user/computer interaction input/output, instruments, etc., can solve the problems of long transmission time and printer processing time
CN100483451CInactive π Publication Date: 2009-04-29ANOTO AB
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[0034] figure 1 A portion of an absolute position encoding pattern used to exemplify the invention is described. Such position-coding patterns are described in detail in the Applicant's International Patent Publications WO 01 / 26032 and WO 03 / 001440, which patent publications are hereby incorporated by reference. figure 1 The coding pattern of , mainly consists of simple graphic symbols that can take on four different values, whereby two bits of information can be encoded. Each symbol includes a marker 10 and a spatial reference point or nominal position 12, wherein the marker 10 is moved or offset a certain distance from the nominal position 12 along one of four different directions. The value of each symbol is given by the displacement direction. The symbols are then arranged with nominal positions 12, thereby forming a regular raster or grid 14, which may be virtual and thus not visibly contained in the coding pattern.
[0035] In what follows, assume the use of figure 1...
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Abstract
A computer-implemented method for on-demand printing of a coding pattern on a digital printer to encode data on a surface is devised. The coding pattern includes multiple parallel number sequences representing different rotations of the cyclic number sequence. The method may include retrieving a digital representation of the encoded pattern, and identifying rotations therein to derive shift information indicative of a phase difference between each rotation and the cyclic digital sequence. In a printing operation, all the different rotations can be represented by a cyclic sequence of numbers embodied as at least one code block image. The code block image is repeated according to the shift information to form a printable image in the printer.
Description
[0001] Cross References to Related Applications [0002] This application claims priority under Swedish Patent Application 0301729-0, filed June 13, 2003, and U.S. Provisional Patent Application 60 / 477,926, filed June 13, 2003, both of which are incorporated herein by reference . technical field [0003] The present invention generally relates to printing coded patterns on an on-demand digital printer. Background technique [0004] Currently, it is known to embed certain information on passive bases such as paper, tablets etc. using coding patterns. A properly programmed scanner, fax machine, camera or digital pen can then read, reconstruct and use that information logically embedded in the substrate. For example, graphical information on the substrate can be supplemented with embedded information that extends the functionality of the substrate. Such embedded information may include file data, commands, supplementary text or images, hyperlinks, absolute positions, etc. fo...
Claims
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