OPPO“类DC调光”解析:OLED屏不再辣眼 Reno尝鲜

4月3日消息,ColorOS官微对“类DC调光”做了详细解读。

官方介绍,因为部分用户反馈在低亮度下OLED屏幕会开启PWM调光(240Hz),此时会令眼睛感到不适。为此OPPO ColorOS多媒体开发团队针对OLED屏幕低亮度PWM调光进行优化,官方称之为“类DC调光”。

ColorOS官方介绍,开发团队曾经尝试过4种方案,包括低亮度背光平滑算法、PCC图像遮罩、修改PWM频率、蒙版调光+dither等,其中前3种方案都会对屏幕观感产生负面影响,比如屏幕偏色、发光不均匀、屏幕闪屏、灰阶偏离劣化等。

最终ColorOS选定“蒙版调光+dither”方案,该方案调用高通骁龙平台内部Snapdragon Display Engine图层混合器功能,该混合器一般处理VR双眼图像混合,或者处理视频与应用界面的叠加等。

SDE混合器的专用图层是Dim Layer,图层混合器通过Dim Layer与其它图层进行透明混合处理,最终整个画面的内容亮度得到了有效的降低,同时保留了类似DC调光模式的效果。

ColorOS“类DC调光”效果怎么样

ColorOS“类DC调光”开启之后,可以有效降低敏感人群因为低频PWM调光产生的疲惫感。另外,官方强调一直在加速推动屏幕供应商,希望早日可以一起实现软硬件结合的“真全局DC调光”。

哪些机型可以使用ColorOS“类DC调光”

OPPO Reno新品手机将会优先搭载ColorOS类DC调光(4月10日发布),同时Find X、R17系列、R15系列等机型也在有计划的调试中。

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