Originally Posted by Cam1977
Non Macroblocking flashing lights that sparkle😉
No, not that one! I meant a name for the 3rd dimming algorithm!
ABL (automatic brightness limiter):
- dimming of the picture based on average picture level and power draw
- happens during very bright scenes
- dims instantly and un-dims instantly
- can't be disabled, but lowering Oled-Light makes it less aggressive
- the dimming time was faulty between firmwares 3.00.63 (or earlier), and 4.10.15; there was a delay before the change, making it visible.
ASBL (automatic static brightness limiter):
- dimming of the picture after being static for a certain amount of time. (90 seconds I think but not sure)
- happens gradually
- can also trigger during non static scenes with a very low average picture level
- un-dims when something bright enters the scene or there is a scene change
- can be disabled in the service menu by turning off TPC (Thermal Protection Circuit)
And now, from
3rd type - no name: Name needed!
- It will be activated if the TV detected the bright part of the screen is larger than a certain threshold (maybe 50% or 60%), and the content is changing,
- then after 150 seconds, TV will dim the brightness down every passing minute until it reaches 3/5ths (60%) of the original illuminance.
- It seems there is no way to disable this dimming function, and it will slowly brighten up randomly after dimming down, or after a display of mostly black content.
- On a completely static picture this doesn't happen (with ASBL disabled).