| 摘要 |
PROBLEM TO BE SOLVED: To reproduce a multiple image signal, where an ID system in a different system from own device is overlapped and to prevent an abnormal operation, such as oscillation in a reproduction mode in the different system. SOLUTION: When a multiple image signal, reproduced by a recording device 2 is to be reproduced, the ID signal in an own system or another system being superposed on an image signal is detected by an ID detection circuit 11, and the ID signal addition operation in the own system is switched by a selector 14, based on the output of a state judgment circuit 12. Only in the case of a mode for reproducing the multiple image signal, where an ID signal in another system has been overlapped and also in the case where the ID signal is detected by the ID detection circuit 11, is an ID signal ID-βin the own system generated by an ID generation circuit 13 selected by the selector 14, and the multiple image signal in another system is switched by a reproducing/recording control circuit 17 using the ID signal ID-β, thus outputting an image signal of a prescribed channel, where the same ID signal has been superposed.
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