公开(公告)号：US10275626B2

公开(公告)日：2019-04-30

申请号：US15114202

申请日：2014-10-22

Applicant: Sony Interactive Entertainment Inc.

Inventor： Takuya Kuji ,  Yuichi Machida ,  Takeshi Yamagishi ,  Kaname Kosugi ,  Jun Sakamoto

IPC: G06K19/00 ,  G06K7/14 ,  G06K7/12 ,  G06K19/06 ,  G06K7/10

Abstract: A sheet body 30 includes first and second sheets 40 and 60 that transmit infrared radiation. A rear face of the first sheet 40 is opposed to a front face of the second sheet 60. An information code is marked on a front or rear face of the second sheet 60 by using an infrared absorbing material. The rear face of the first sheet 40 and the front face of the second sheet 60 are stuck together with a highly infrared transmitting adhesive. The front face of the first sheet 40 is marked with a pattern using an infrared transmitting material that is visible when visible radiation is irradiated onto the pattern.