AV devices and method of controlling the same

A method of controlling AV devices, comprising:

• controlling AV devices connected to a network via a digital interface;
• and
• restoring a connection with the network when a connection state of the network changes,
• wherein if a second AV device, which was in communication with said AV device before the network connection state change, conflicts with said AV device, rejecting a connection request initiated by the second AV device and restoring the AV device, and
• wherein the AV devices are connected to a network via a digital interface compliant with IEEE 1394 standard, and control is executed with respect to the AV devices so as to reject a PCR LOCK request given from the outside via the network within a time defined by isoch resource delay after the network connection state change and bus reset occurs.

An AV device network system comprising:

• a plurality of AV devices connected to a network via a digital interface;
• and
• a first AV device, from among the plurality of AV devices, configured to restore a connection with the network when a connection state of the network changes,
• wherein if a second AV device selected from among the plurality of AV devices was in communication with the first AV device before the network connection state change, conflicts with the first AV device, the first AV device rejects a connection request initiated by the second AV device and restores the connection that existed before the network connection state change, and
• wherein the plurality of AV devices are connected to the network via the digital interface that is compliant with IEEE 1394 standard, and control is executed with respect to the plurality of AV devices so as to reject a PCR LOCK request given from the outside via the network within a time defined by isoch resource delay after the network connection state change and bus reset occurs.