Wasol Co. Ltd. has provided NHK TV with the technical explanation

NTS(NHK Technical Service), a branch of NHK, that deals specially with stereoscopy, had developed the 3-D camera, but failed.

In 2004, Wasol was invited to the annual meeting of the presidents of the NHK group on September and the meeting of the heads of the branches in NHK national network on October to present its technology, which meant the acknowledgements by the leaders of the broadcasting station and led to produce the making film of "Yoshitsune."