Image recorded product, image recording system, image reproducing system, and recording medium for use to superimpose-record/reproduce additional information
AssigneeKabushiki Kaisha Toshiba
InventorsNaofumi Yamamoto, Hidekazu Sekizawa, Haruko Kawakami, Kazuhiko Higuchi
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Abstract
An image recording system superimposes, on an original image, an additional image which is same as at least any one of visible characters, symbols and numerals recorded on a recorded product and records the superimposed image on the recorded product as an image for certification. The additional image superimpose-recorded on the recorded product cannot visually be recognized and it is permitted to be visible when a universal optical filter is used.
Claims4
A personal identification product on which at least identification information for identifying a person is printed, said identification information comprising:
- visible identification image information which is composed of at least one of code data and image data for identifying a person;
- additional image information which is obtained by subjecting at least one of said code data and said image data to color-difference modulation;
- and
- printing image data obtained by adding a modulated signal representative of said additional image information to at least part of a printing color signal representative of said visible identification image information, wherein the obtained printing image data is printed as said identification information on said personal identification product.
Dependencies are inferred from the claim text.