Monitoring system of multimedia communication terminal

摘要

In order to provide a monitoring system for a multimedia communication terminal which can detect reliably the abnormal reproduction of multimedia data, using a simple configuration and having a sufficient consideration for the user's interface, detecting the scheduled interruption of the multimedia data delivery, the monitoring system includes a decode counter (49), a count value of the decode counter being incremented each time that video data of a picture frame is decoded from multimedia data delivered through a transmission line (23) by a video decoder (48), and control means (41) for determining whether or not the multimedia data are supplied by detecting the beginning and the end of the reproduction of the multimedia data, and detecting whether or not an abnormal state occurred in the multimedia communication terminal (22) by checking for any alteration of the count value.