Device for encoding and marking of documents for identification and retrieval
AssigneeAdalbert Gubo
InventorAdalbert Gubo
Life of this patent
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Abstract
A device which collects the pixel information generated during printing or scanning of a document, and transforms this sequential information into a code A which has a one-to-one relationship to the sequential pixel information, and which device computes from this code A a hashcode H which meets the requirements of a digital signature, and which device then feeds the digital information needed to print the hashcode H to the printer, in a pixel format, or feeds the same hashcode H to the digital media storage device, in both cases in a part of the document page which is digitally stored or printed, a method of use of the said device in encoding a document to form a hashcode H in pixel form.
Claims8
A device which encodes and marks documents for identification and retrieval, which device collects sequential pixel information during scanning or during printing of a document, and which device further comprises:
- a conversion mechanism that transforms this sequential information into a code A which has a one-to-one relationship to the sequential pixel information;
- and
- a computational mechanism that computes from this code A and physical information B collected during the actual printing or scanning process from mechanical movement and electronic circuitry of a printer or scanning device, a hashcode H which meets the requirements of a digital signature, and
- a means which then feeds the digital information needed to print the hashcode H to the printer, in a pixel format as a part of a printed document page,
- wherein the device further includes at least two buffers which provide the signals for forwarding the computed hashcode H to a Hardware Hash to Pixelcode Converter, and for forwarding the hashcode pixel data via a Hardware Timing Unit to be incorporated into the document which is printed.
A device which encodes and marks documents for identification and retrieval, which device collects sequential pixel information during scanning or during printing of a document, and which device further comprises:
- a conversion mechanism that transforms this sequential information into a code A which has a one-to-one relationship to the sequential pixel information;
- and
- a computational mechanism that computes from this code A and physical information B collected during the actual printing or scanning process from mechanical movement and electronic circuitry of a printer or scanning device, a hashcode H which meets the requirements of a digital signature, and
- a means which then feeds the hashcode H to a digital media storage device in a pixel format as a part of the digitally stored document,
- wherein the device further includes at least two buffers which provide the signals for forwarding the computed hashcode H to a Hardware Hash to Pixelcode Converter, and for forwarding the hashcode pixel data via a Hardware Timing Unit to be incorporated into the document which is digitally stored.
Dependencies are inferred from the claim text.