Anti-counterfeiting method and apparatus using digital screening
January 12, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1002600 Process of coding indicia and product produced thereby Encoding system Security document using a variable dot screen Method and apparatus for scrambling and unscrambling bar code symbols Electronic indicia in bit-mapped form System for the secure storage and transmission of data Latent images comprising phase shifted micro printing Anti-counterfeiting process using lenticular optics and color masking Record with encoded data InventorsAssigneeApplicationNo. 005529 filed on 01/12/1998US Classes:380/51, Having production of printed copy (e.g., printer, typewriter)283/113, Having watermark380/54, BY MODIFYING OPTICAL IMAGE (E.G., TRANSMISSIVE OVERLAY)380/205, Video electric signal masking382/135, Reading paper currency713/176Authentication by digital signature representation or digital watermarkExaminersPrimary: Laufer, Pinchus M.Attorney, Agent or FirmForeign Patent References
International ClassesG09C 005/00B42D 015/00 H04L 009/00 AbstractAn apparatus and process for hiding the secondary image within the primary image and generating a high quality hard copy of the unified elemental image of a variety of media. The process comprises the steps of rasterizing the first image into an first elemental image and rasterizing the second image, compensated with its own inverse, into an second elemental image. The first elemental image and the second elemental image are merged into a unified elemental image based on a predetermined decoding and compensating principle, resulting in the second elemental image being hidden within the first elemental image. An output image is created based on the unified elemental image where the primary image is visible to an un-aided eye while the secondary image is hidden from the un-aided eye.Other References
Field of SearchHaving production of printed copy (e.g., printer, typewriter)BY MODIFYING OPTICAL IMAGE (E.G., TRANSMISSIVE OVERLAY) HAVING PRODUCTION OF PRINTED COPY (E.G., CRYPTOGRAPHIC PRINTER OR TYPEWRITER) VIDEO CRYPTOGRAPHY Video electric signal masking FACSIMILE CRYPTOGRAPHY ELECTRIC SIGNAL MASKING APPLICATIONS Personnel identification (e.g., biometrics) Reading paper currency IMAGE COMPRESSION OR CODING CRYPTOGRAPHIC RECORD TEMPLATE Having dot pattern Having watermark Authentication by digital signature representation or digital watermark | |
