video LCDD 00000086 00000000 \ brightness +1, after that osd bar is full
video LCDD 00000086 00000000 /
video LCDD 00000086 00000000 \ brightness +1, bar still full but display is darker now 
video LCDD 00000086 00000000 /
video LCDD 00000087 00000000 \ brightness -1, bar shows the second-highest level (one is missing), display brighter again
video LCDD 00000087 00000000 /