Patent ID: 8072543
Filing Date: 2011-12-06
Classification: H04N

Abstract:
1. An electronic apparatus including a plurality of terminals for communicating with a plurality of external devices, comprising: a storage module configured to store an address list correlating a logical address and a physical address of each of the plurality of external devices; a transmission module configured to simultaneously transmit a power-on signal to the plurality of external devices connected to the terminals, upon turn on of the electronic apparatus; and a processor configured to (i) transmit power state acquisition commands to the plurality of external devices after the transmission module transmits the power-on signal, to (ii) determine power states of the plurality of external devices one by one, based on responses from the plurality of external devices, the power states of the plurality of external devices including turned on and turned off, to (iii) switch video input among the terminals connected to first external devices of the plurality of external devices, the first external devices being determined to be turned on by the determination module, to (iv) acquire device information including the physical address from the first external devices determined to be turned on, and to (v) update the address list based on the acquired device information.