Method and system for encoding information on a printed page by modulation of the dot development
First Claim
1. A method for developing a bar code representing the encoding of a set of data, the bar code including pixels having one black level, one white level and at least one gray level, comprising:
- generating a multi-level data representation of the set of data, the number of levels corresponding to the sum of the black level, the white level and the number of gray levels;
determining a pixel color for each component of the multi-level data representation, a pixel color for at least one of the components being one of the at least one gray levels; and
printing the determined pixel color for each component to form the bar code.
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Accused Products
Abstract
A system and method for developing a bar code representing the encoding of a set of data, in which the bar code includes pixels having one black level, one white level and at least one gray level, generates a multi-level data representation of the set of data, the number of levels corresponding to the sum of the black level, the white level and the number of gray levels. A pixel color is determined for each component of the multi-level data representation, a pixel color for at least one of the components being one of the at least one gray levels. The determined pixel color is then printed for each component to form the bar code.
16 Citations
38 Claims
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1. A method for developing a bar code representing the encoding of a set of data, the bar code including pixels having one black level, one white level and at least one gray level, comprising:
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generating a multi-level data representation of the set of data, the number of levels corresponding to the sum of the black level, the white level and the number of gray levels;
determining a pixel color for each component of the multi-level data representation, a pixel color for at least one of the components being one of the at least one gray levels; and
printing the determined pixel color for each component to form the bar code. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for creating and printing a bar code with a laser printer having a laser, comprising:
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converting a set of data into the bar code having pixels with one black level, one white level and at least one gray level; and
modulating the laser of the laser printer to print a gray level pixel of the bar code. - View Dependent Claims (9, 10, 11, 12, 13, 15, 16, 17, 18, 19)
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14. A printer for printing a bar code representing the encoding of a set of data, the bar code including pixels having one black level, one white level and at least one gray level, comprising:
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a controller which receives a multi-level data representation of the set of data, the number of levels corresponding to the sum of the black level, the white level and the number of gray levels, and determines a pixel color for each component of the multi-level data representation, a pixel color for at least one of the components being one of the at least one gray levels; and
a laser, coupled to the controller, which prints each component to form the bar code based on the determined pixel color from the controller.
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20. A printer for creating and printing a bar code, comprising:
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a controller which converts a set of data into the bar code having pixels with one black level, one white level and at least one gray level;
a laser, coupled to the controller, which is modulated by the controller to print a gray level pixel of the bar code. - View Dependent Claims (21, 22, 23, 24, 25, 27, 28, 29, 30, 31, 32)
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26. A computer readable medium operable on a computer for developing a bar code representing the encoding of a set of data, the bar code including pixels having one black level, one white level and at least one gray level, the computer readable medium configured to:
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generate a multi-level data representation of the set of data, the number of levels corresponding to the sum of the black level, the white level and the number of gray levels;
determine a pixel color for each component of the multi-level data representation, a pixel color for at least one of the components being one of the at least one gray levels; and
print the determined pixel color for each component to form the bar code.
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33. A computer readable medium operable on a computer for creating and printing a bar code with a laser printer having a laser, the computer readable medium configured to:
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convert a set of data into the bar code having pixels with one black level, one white level and at least one gray level; and
modulate the laser of the laser printer to print a gray level pixel of the bar code. - View Dependent Claims (34, 35, 36, 37, 38)
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Specification