Network apparatus with recording bit rate monitoring

A network apparatus making an information exchange with other apparatus on a network, comprising:

• an event processor which makes an event issue with respect to the other apparatus, and receives an event notification from the other apparatus;
• a data storage which stores data;
• a transmitter which transmits the data stored in the data storage to other apparatus;
• a data transmitter which instructs a start of data transmission and an end of data transmission from the transmitter to the other apparatus;
• and
• a recording bit rate interpreter which detects a change of the recording bit rate of the other apparatus based on an event notification from the other apparatus, and predicts whether or not data transmission to the other apparatus by the data transmitter is completed.

A data recording method comprising:

• storing data in a data storage;
• measuring by a recording bit rate measuring unit a decreasing amount per unit time of a residual capacity of the data storage as a recording bit rate;
• monitoring by a recording bit rate monitor the bit recording bit rate measured by the recording bit rate measuring unit as a state variable, determining whether or not the state variable changes based on a predetermined reference, and outputting an event issue request if it is determined that the state variable changes;
• and
• sending by an event processor an event notification showing a state change from the communication unit to the other apparatus based on the event issue request from the recording bit rate monitor.