| 摘要 |
In the illustrated embodiments, a television signal (at 10) is received by a video cassette recorder (VCR) (11). The video baseband signal is supplied to a video circuit and the audio baseband signal is supplied to an audio circuit. Subliminal message information is pre-recorded on a floppy disk (15). Information is read from the floppy disk via a floppy disk drive and a disk controller command circuit (20). The information red from the floppy disk is supplied to the video and audio circuits (21, 22). In the video circuit, information corresponding to the video portion of a subliminal message is added to the video baseband signal. Prior to such adding, the intensity of the information signals corresponding to the video subliminal message is adjusted. In the audio circuit, information signals corresponding to an audio subliminal message are added to the audio baseband signal. The intensity of the information signals corresponding to the audio subliminal message are adjusted (at 29) prior to being added (at 30) to the audio baseband signal. The resulting video and audio signals are then modulated (at 23) to produce a resulting television signal. |
