Data carrier

B - Operations – Transporting – 42 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B42D 15/00 (2006.01)

Patent

CA 2489333

A halftone image original is converted into a line screen halftone image comprising regularly spaced-apart screen lines 5 that are modulated in their width y in accordance with the tonal value to be represented. According to the invention, width y of screen lines 5 is modulated only on one side so that screen lines 5 are flat on one side and width-modulated on one side. Various examples are stated for how this screen line modulation permits effective copy protection.

L'invention concerne un support de données dans lequel un modèle d'image en demi-teintes est converti en image en demi-teintes à trame lignée, cette image étant constituée de lignes de trame (5) régulièrement espacées dont la largeur (y) est modulée d'après la densité à représenter. Selon l'invention, la largeur (y) des lignes de trame (5) est modulée uniquement d'un côté de sorte que lesdites lignes de trame (5) présentent un côté plat et un côté modulable en largeur. Différents modes de réalisation de l'invention illustrent à quel point cette modulation des lignes de trame permet d'obtenir une protection efficace contre la copie.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Data carrier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data carrier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data carrier will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2074503

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.