The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1999
Filed:
Jun. 30, 1998
Pai-Ping Huang, Hsinchu Hsien, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A holographic anti-imitation method and device is provided, which can prevent a creative graphic design from unauthorized reproduction. The holographic anti-imitation method and device provides the creative graphic design as a hidden pattern in a synthesized image formed in a hologram that can be viewed only through a special viewing device. This allows the creative graphic design to be highly difficult to be reproduced by infringing parties. The synthesized image includes a background pattern visible to naked eyes and a hidden pattern merged into the background pattern which is invisible to the naked eyes. The hologram can be a dot-matrix hologram which is formed through laser means that generates two interfering laser beams to form a dot-matrix pattern of the synthesized image in the hologram. The hidden pattern can be viewed only through a special viewing device, such as a lenticular or a grate-like piece. When the viewing device is moved in crosswise or lengthwise direction over the hologram, the hidden pattern can be visualized to the viewer.