Machine-readable symbol and related method
First Claim
1. A machine readable symbol, comprising:
- a data field comprised of a plurality of data cells, each data cell being assigned a color corresponding to a data pattern value, a finder pattern value or an overlapping data pattern value and finder pattern value;
wherein a finder pattern is discernable when the symbol is subjected to a first color filter means; and
wherein a data pattern is discernable when the symbol is subjected to a second color filter means.
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Accused Products
Abstract
A machine readable symbol includes a data field of arranged data cells. Each data cell is assigned a data pattern value or a finder pattern value. Preferably, at least some of the data cells, or even all of the data cells, include at least one data pattern value and a finder pattern value which are overlapping. A color corresponding to the data pattern value, finder pattern value, or overlapping data pattern value and finder pattern value is assigned to each data cell. A finder pattern is discernable when the symbol is placed under a first color filter, or exposed to a first color, or the symbol image is processed by a first software color filter of an electronic device. A data pattern is discernable when the symbol is placed under a second color filter, or exposed to a second color, or the symbol image is processed by a second software color filter.
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Citations
29 Claims
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1. A machine readable symbol, comprising:
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a data field comprised of a plurality of data cells, each data cell being assigned a color corresponding to a data pattern value, a finder pattern value or an overlapping data pattern value and finder pattern value;
wherein a finder pattern is discernable when the symbol is subjected to a first color filter means; and
wherein a data pattern is discernable when the symbol is subjected to a second color filter means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A machine readable symbol, comprising:
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a data field comprised of a plurality of data cells, each data cell being assigned a color corresponding to a data pattern value or a finder pattern value, or an overlapping data pattern value and finder pattern value, wherein at least a subplurality of the data cells are assigned an overlapping data pattern value and finder pattern value;
wherein a finder pattern is discernable when the symbol is subjected to a first color filter by viewing the symbol through a first color filter, exposing the symbol to a first color light source, or utilizing an electronic device to process the symbol image in accordance with a first color filter; and
wherein a data pattern is discernable when the symbol is subjected to a second color filter by viewing the symbol through a second color filter, exposing the symbol to a second color light source, or utilizing an electronic device to process the symbol image in accordance with a second color filter. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A method for creating and reading a machine readable symbol, comprising the steps of:
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creating a data field having a plurality of data cells;
assigning a data pattern value at least some of the data cells;
assigning a finder pattern value to at least some of the data cells, wherein at least one data cell is assigned an overlapping finder pattern value and a data pattern value;
assigning a color to each data cell, the color corresponding to the data pattern value, the finder pattern value, or an overlapping data pattern value and finder pattern value;
subjecting the symbol to a first filter to discern a finder pattern; and
subjecting the symbol to a second filter to discern a data pattern. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification