| 摘要 |
PROBLEM TO BE SOLVED: To synchronize the relevant information to a content included in a reproduced signal accurately.SOLUTION: An identification delay time estimation unit 121 calculates the estimate of an identification delay time required after start of reproduction in a section where the same identification ID is embedded until the same identification ID can be identified, based on the number of times when the same identification IDs are detected continuously from an input signal, and the detection time of each detection in the same identification ID, a reproduction start estimation unit 122 calculates the estimate of the reproduction start time, based on the estimate of an identification delay time and the current time, and a reproduction position estimation unit 123 calculates the reproduction position corresponding to an input signal, based on the estimate of the reproduction start time thus calculated. |
