Study of Countermeasures for Content Leaks by Video Recording

The authors have been engaged in the study of countermeasures to prevent the leak of onscreen movies using a digital video camera. One of the studies is the development of a transparent sheet that emits infrared (IR) light, which is applied to the screen and generates optical noise in the onscreen photographic images when recorded. Another study is the development of a method to detect the presence of the IR-cut filter near the display, which compromises the function of the IR emitting sheet as a countermeasure to prevent video recording using the IR-cut filter. This report is prepared as an advance report because it was confirmed that the feasibility of such countermeasures is enhanced.