{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8467566","patent":{"patent_number":"US-8467566","title":"Method for detecting fraud in a printed image","assignee":null,"inventors":[],"filing_date":"2005-10-06T00:00:00.000Z","publication_date":"2013-06-18T00:00:00.000Z","cpc_codes":["H04N"],"num_claims":20,"abstract":"A method is provided for authenticating an image printed at a predefined print resolution or in accordance with a predetermined print grid. The method includes the steps of scanning the image to produce digital data and segmenting the data into first and second groups corresponding, respectively, to first and second predefined sections of the image. Next, a determination is made concerning the anticipated spatial position of select columns of digital data from each of the first and second groups of data. By examining the data, differences may be identified between the anticipated and actual spatial position of the columns, to determine the authenticity of the image. The identified differences which may include (i) a rotary/linear displacement in the actual spatial position of the select columns. (ii) a change in beat frequency between sections of the image, and/or (iii) a phase shift in a beat frequency. Furthermore, the printed image may include a predefined phase shift introduced at the time of original printing, i.e., a change in spatial separation between adjacent columns of the print grid. The predefined phase shift can be used as a mark to validate the authenticity of the printed image."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method for detecting fraud in a printed image","description":"A method is provided for authenticating an image printed at a predefined print resolution or in accordance with a predetermined print grid. The method includes the steps of scanning the image to produ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8467566","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8467566","citation_suggestion":"Patentable. \"Method for detecting fraud in a printed image\" (US-8467566). https://patentable.app/patents/US-8467566","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8467566","json":"https://patentable.app/api/llm-context/US-8467566","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T00:17:20.321Z"}