快捷键：
"F1"..........[增加亮度]

"F2"..........[减少亮度]

"+"...........[增大音量]

"-"...........[降低音量]

"F8"..........[静音]

"<"...........[向左切换多源]

">"...........[向右切换多源]

"←"...........[快退]

"→"...........[快进]

"↑"...........[向上切换频道]

"↓"...........[向下切换频道]