A system for controlling allocation of areas of data-encoding pattern from a defined pattern space, the system comprises a service provider system 304; a user system 302; and a certification system 308. The certification system is arranged to certify a token, and the service provider system is arranged to issue the certified token to the user system thereby authorising the user to use an area of the pattern.

 
Web www.patentalert.com

< Light tone reproduction of binary rip output at high screen frequencies using post rip image processing

< Creating high spatial frequency halfton screens with increased numbers of printable density levels

> System and method for profiling digital-image input devices

> Color correction techniques for correcting color profiles or a device-independent color space
~ 00259