A start point time measurement section 53 measures the time at which a
moving
image request is input as start point time and a start point time determination
section 59 determines whether the start point time is valid or invalid,
and outputs only the valid start point time to a response time calculation section
52; an end point time measurement section 54 measures the time at
which moving image display is started and an end point time determination section
58 determines whether the end point time measured by the end point time
measurement section 54 is valid or invalid, and outputs only the valid end
point time to the response time calculation section 52; and the response
time calculation section 52 calculates the difference between the start
point time and the end point time as the response time and an evaluation system
40 evaluates the satisfaction degree of the user at the response time and
the like for monitoring and managing the response time in moving image service.
