| 摘要 |
In case of a loss of power supply a short-circuit 1, 2 between the corresponding pins of the two IEEE 1394 connectors 3, 4 of a device is established. Preferably this will be achieved by a relay 1 controlling switches 2. If power is available, the relay is powered and the switches are open. The device then behaves like without this extension. If power is lost, the relay 1 is not powered any longer, and the switches 2 are closed. By this way, the device simply disappears from the cluster, which will then be reorganised according to IEEE 1394 rules. <IMAGE> |
