Variable data digital pantographs
First Claim
1. A method of forming a variable data pantograph comprising:
- receiving a variable data string;
retrieving at least one character representation from a vocabulary of character representations stored in memory, the retrieved at least one character representation corresponding to the variable data string, each of the character representations in the vocabulary including a foreground region including a character shape and a background region suitably sized and arranged for encompassing the foreground region, the background region incorporating a first pattern of elements and the foreground region incorporating a second pattern of elements;
assembling the retrieved at least one character representation to form a variable data pantograph, whereby when the variable data pantograph is rendered in an original document, the foreground and background regions are similar in tone, the foreground and background regions being substantially less similar in tone in a copy of the original document to render the character visible.
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Accused Products
Abstract
A variable data pantograph is formed by receiving a variable data string and retrieving at least one character representation from a vocabulary of character representations stored in memory. The retrieved at least one character representation corresponds to the variable data string. Each of the character representations in the vocabulary include a foreground region including a character shape and a background region suitably sized and arranged for encompassing the foreground region. The background region incorporates a first pattern of elements and the foreground region incorporates a second pattern of elements. The retrieved at least one character representation is assembled to form a variable data pantograph, whereby when the variable data pantograph is rendered in an original document, the foreground and background regions are similar in tone, the foreground and background regions being substantially less similar in tone in a copy of the original document to render the character visible.
60 Citations
24 Claims
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1. A method of forming a variable data pantograph comprising:
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receiving a variable data string; retrieving at least one character representation from a vocabulary of character representations stored in memory, the retrieved at least one character representation corresponding to the variable data string, each of the character representations in the vocabulary including a foreground region including a character shape and a background region suitably sized and arranged for encompassing the foreground region, the background region incorporating a first pattern of elements and the foreground region incorporating a second pattern of elements; assembling the retrieved at least one character representation to form a variable data pantograph, whereby when the variable data pantograph is rendered in an original document, the foreground and background regions are similar in tone, the foreground and background regions being substantially less similar in tone in a copy of the original document to render the character visible. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 17)
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13. A method of generating a font representation comprising:
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receiving a set of characters to be represented in the font representation; for each of the characters; rasterizing the character at a reduced resolution to form a grid in which each location in the grid is designated as ON or OFF; for each ON location, assigning a first base pattern comprising a first element; for each OFF location, assigning a second base pattern comprising a second element; and storing the character representation in memory, a set of the stored character representations forming the font representation; the first and second base patterns being selected to provide regions of similar tone when rendered in an original document, which regions being substantially less similar in tone in a copy of the original document to render the character visible. - View Dependent Claims (14, 15, 16)
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18. An apparatus for generating a variable data pantograph comprising:
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a reception component which receives a variable data string; memory which stores a vocabulary of character representations, each of the character representations in the vocabulary including a foreground region including a font body image shape and a background region suitably sized and arranged for encompassing the foreground region; a generation component which retrieves a selected at least one of the character representations from the vocabulary which are to form a variable data pantograph corresponding to the received variable data string; and optionally, an applying component which applies the variable data pantograph to an input image, whereby when the variable data pantograph is rendered in an original document, the foreground and background regions are similar in tone, the foreground and background regions being substantially less similar in tone in a copy of the original document to render the character visible. - View Dependent Claims (19, 20)
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21. An electronically stored vocabulary of character representations residing in memory for use in a printing system, each of the stored character representations comprising:
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a foreground region having a character shape; and a background region suitably sized and arranged for encompassing the character shape, a first pattern of elements being incorporated into the character representation to define the foreground region and a second pattern of elements being incorporated into the character representation to define the background, whereby when the character representation is incorporated in a variable data pantograph which is rendered in an original document, the foreground and background regions are similar in tone, the foreground and background regions being substantially less similar in tone in a copy of the original document to render the character visible. - View Dependent Claims (22, 23, 24)
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Specification