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A previously proposed method for preventing the illegal recording of movies, which uses a charge-coupled device or a complementary metal oxide semiconductor device to add noise signals to the recorded content, is ineffective when the digital camera or camcorder used for the recording is equipped with an infrared-cut filter. The method has now been enhanced to make it effective even when an infrared-cut...
A previously proposed method using infrared (IR) rays to prevent the re-recording of images and videos corrupts the recorded content by adding invisible noise signals using a charge-coupled device or CMOS device during recording. However, it is not effective against re-recording using a short wavelength pass filter (SWPF) to eliminate the noise. We have now implemented a countermeasure that makes...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.