As the BV4 is a Panansonic comercial panel you can plug in more input devices in the slots at the back of the panel. So you could add an 2nd DVI modul. The IR receiver of the panel is at the lower left corner of the fron bezel behind the frame and with a Panasonic remote control or a universal one you could switch the input from 1 to 2. However, this is not that easy as it sounds as the IR receiver is covered by the frame
An easier option would be to use a switch box with two DVI inputs and one output.
An other option is to drive the panel with a lintronic box (rs 232 from the box to the panel) to control all operations (on/off, input etc.)
Karsten
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BV4-50, Beosystem 3, Beolab 5, Beolab 3, BV3-32, BV1, BS9000, Beolab 4, Beolab 2000, Beo4 Cinema