DEVICE FOR ESTIMATE BUFFER SIZE, DEVICE FOR MONITORING DELIVERY QUALITY, DEVICE FOR MANAGING DELIVERY QUALITY, METHOD FOR ESTIMATING BUFFER SIZE, METHOD FOR MONITORING DELIVERY QUALITY, METHOD FOR MANAGING DELIVERY QUALITY, PROGRAM FOR ESTIMATING BUFFER SIZE, AND PROGRAM FOR MONITORING DELIVERY QUALITY

摘要

A device for estimating the amount of data stored in a buffer in a reproducing section for reproducing streaming data delivered via an electric communication line to be the buffer size. The device comprises a predetermined information obtaining section for obtaining predetermined information at least on the above electric communication line and reproducing section, and a buffer size estimating section for estimating the size of the buffer in the reproducing section, based on the obtained predetermined information.