一种用于写码多层视频数据之器件经组态以：判定用于一当前图像之一图像次序计数(POC)值；判定用于一参考图像之一POC值；判定用于该当前图像之一层识别(ID)值；判定用于该参考图像之一层ID值；借由回应于两个条件中之至少一者为真而接收指示是否激活或禁用加权预测之一旗标及回应于该两个条件为假而不接收该旗标来条件性地接收该旗标，该两个条件为：(1)该当前图像之该POC值不等于该参考图像之该POC值；及(2)用于该当前图像之该层ID值不等于用于该参考图像之该层ID值。

A device for coding multi-layer video data is configured to determine a picture order count (POC) value for a current picture; determine a POC value for a reference picture; determine a layer identification (ID) value for the current picture; determine a layer ID value for the reference picture; conditionally receive a flag indicating whether weighted prediction is enabled or disabled by receiving the flag in response to at least one of two conditions being true and not receive the flag in response to the two conditions being false, the two conditions being (1) the POC value of the current picture is not equal to the POC value of the reference picture, and (2) the layer ID value for the current picture is not equal to the layer ID value for the reference picture.