ABSTRACT
It is well known that sense of touch is inevitable for understanding the real world. The use of force feedback to enhance computer-human interaction (CHI) has often been discussed. A Haptic interface is a feedback device that generates sensation to the skin and muscles, including a sense of touch, weight, and rigidity. Compared to ordinary visual and auditory sensations, a haptic is difficult to synthesize. Visual and auditory sensations are gathered by specialized organs, the eyes and ears. On the other hand, a sensation of force can occur in any part of the human body and is therefore inseparable from actual physical contact. These characteristics lead to many difficulties when developing a haptic interface. Visual and auditory media are widely used in everyday life, although little application of haptic interface is used for information media.
