SYSTEM AND METHOD FOR PRINTING DOCUMENTS HAVING A COPY DETECTION PATTERN
First Claim
1. A method of printing a document having a printed copy detection pattern, comprising:
- receiving at an intermediate electronic device printer control commands from a computing device, said printer control commands including;
(i) commands for printing based on document data, and (ii) an identification of a determined portion of the document data that is to be used in generating said printed copy detection pattern;
generating in said intermediate electronic device copy detection pattern data using said determined portion of the document data and a cryptographic key stored in the intermediate electronic device;
generating in said intermediate electronic device modified printer control commands, said modified printer control commands including commands for printing a first document portion based on the document data and a second document portion including said printed copy detection pattern based on said copy detection pattern data; and
sending said modified printer control commands to a printing device for printing said first document portion and said second document portion.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of printing a document includes generating commands in a computing device that include: (i) commands for printing based on document data, and (ii) an identification of a determined portion of the document data that is to be used in generating a printed copy detection pattern. The method further includes sending the printer control commands to an intermediate electronic device that stores a key, generating copy detection pattern data using the determined portion of the document data and the cryptographic key, and generating modified printer control commands that include commands for printing a first document portion based on the document data and a second document portion including the printed copy detection pattern based on the copy detection pattern data. Finally, the modified printer control commands are sent to a printing device. Also, a system is provided for implementing the method.
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Citations
14 Claims
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1. A method of printing a document having a printed copy detection pattern, comprising:
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receiving at an intermediate electronic device printer control commands from a computing device, said printer control commands including;
(i) commands for printing based on document data, and (ii) an identification of a determined portion of the document data that is to be used in generating said printed copy detection pattern;generating in said intermediate electronic device copy detection pattern data using said determined portion of the document data and a cryptographic key stored in the intermediate electronic device; generating in said intermediate electronic device modified printer control commands, said modified printer control commands including commands for printing a first document portion based on the document data and a second document portion including said printed copy detection pattern based on said copy detection pattern data; and sending said modified printer control commands to a printing device for printing said first document portion and said second document portion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for printing a document having a printed copy detection pattern, comprising:
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a computing device; an intermediate electronic device operatively coupled to said computing device through a first communications channel, said intermediate electronic device storing a cryptographic key; a printing device operatively coupled to said intermediate electronic device through a second communications channel; wherein said computing device is adapted to generate printer control commands and send said printer control commands to said intermediate electronic device over said first communications channel, said printer control commands including;
(i) commands for printing based on document data, and (ii) an identification of a determined portion of the document data that is to be used in generating said printed copy detection pattern; andwherein said intermediate electronic device is adapted to;
(i) generate copy detection pattern data using said determined portion of the document data and said cryptographic key, (ii) generate modified printer control commands, said modified printer control commands including commands for printing a first document portion based on the document data and a second document portion including said printed copy detection pattern based on said copy detection pattern data, and (iii) send said modified printer control commands to said printing device over said second communications channel for printing said first document portion and said second document portion. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification