| 摘要 |
PROBLEM TO BE SOLVED: To reduce a transmission line in the internal processing of auxiliary data signals in a digital video/sound signal recording and reproducing device, which records and reproduces the auxiliary data signals accompanying digital video signals. SOLUTION: An auxiliary data detection conversion circuit 14 detects an auxiliary data signal from an input digital signal SI2 and makes the signal an intermediate type auxiliary data signal. A signal mixing circuit 13 superimposes the auxiliary data signal in a period, corresponding to the horizontal blanking period of a digital video main signal. In this way, because the internal signal S9 of a video signal and the internal signal S10 of the auxiliary data signal to be recorded can be made the same transmission signal S11, a transmission line where the auxiliary data signal is separately transmitted can be eliminated. |
