Ken-ichi Hashida

We don’t have enough information about this author to calculate their statistics. If you think this is an error let us know.
Learn More
We have been developing specific guest guiding system based on compact battery-less information terminals, Aimulet. Implemented conventional Aimulet has features of location and direction sensitive information service device without batteries. On the other hand, the Annulet has two subjects, one is multi-lingual service and another is interactivity. These(More)
It is urgently required to protect copyrights from unjust usage since digital content can be easily copied without degradation of quality. There is a technique called watermarking to protect copyright of digital content, which hides secret information (digital watermark) in digital content. In this paper, we propose a new watermarking method which spreads(More)
  • 1