Lets 'subliminal'!
I hate to defend any Japanese company, but this is crazy. Six frames out of 30 is real OBVIOUS and not "subliminal" at all; about 1 frame of 25 is.

NTV inserts 'subliminal' image into TV program

Mainichi Shimbun, Japan - Feb 16
The program, "Manee no Tora" (Money Tiger), featured a split-second image of Yukichi Fukuzawa from Japan's 10,000-yen note as the program switched ... when recorded and viewed slowly, the screen could be seen turning white before a sepia image of Fukuzawa's face appeared on the screen. NTV officials said the image lasted 0.2 seconds, covering six frames out of 30, a length difficult for most viewers to see.