Techniques for low power selective frame update on display

Techniques for selectively updating partitions of a display are disclosed. In an illustrative embodiment, a display engine of a computing device sends a message to a display to update a particular update partition of the display. Sending only the update partition may conserve bandwidth and power since the entire frame is not sent. In an illustrative embodiment, a display engine sends metadata to a display, indicating when to send a last update message for a frame. The display may then place a link between the display engine and the display in a low power state to reduce power usage. 公开了用于选择性地更新显示器的分区的技术。在说明性实施例中，计算设备的显示引擎向显示器发送消息以更新显示器的特定更新分区。由于不是发送整个帧，只发送更新分区可节省带宽和功率。在说明性实施例中，显示引擎向显示器发送元数据，指出何时发送帧的最后更新消息。显示器于是可将显示引擎和显示器之间的链路置于低功率状态中以减少功率使用。