| 摘要 |
PROBLEM TO BE SOLVED: To make surely and properly performable a duplicate generation restriction control for an information signal even when a storage device is non-compliant interposed. SOLUTION: In an STB(set top box) 2, when opposite equipment connected through an equipment information detecting part 44 with an analog output terminal 43 of its own device which receives the supply of an analog video signal from the STB 2 is a non-compliant equipment and duplicate restriction information superimposed on the analog video signal to be outputted as electronic watermark information indicates 'copy once (duplicable for one generation)', this is rewritten to 'no more copy', and the analog video signal on which the duplicate restriction information indicating 'no more copy' is superimposed is outputted. |
