On-demand printing of coding patterns
A coding pattern and coding technology, 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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[0026] Figure 1 depicts a portion of an absolute position encoding pattern used to illustrate the invention. 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. The coding pattern of Fig. 1 mainly consists of simple graphic symbols which can take on four different values, thereby making it possible to encode two bits of information. 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.
[0027] In the following, it is assumed that t...
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