| 摘要 |
PROBLEM TO BE SOLVED: To carry out more effective demonstration by, for example, a video camera at as low cost as possible. SOLUTION: As a recording medium for demonstration, a recording medium where identification information indicating that the recording medium is for demonstration is recorded is prepared. Then the video enters a demonstration mode once the identification information recorded on the loaded disk for demonstration is discriminated. This constitution does not depend upon, for example, a previously stored program and demonstration using the loaded disk for the demonstration can be carried out.
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