Abstract: Encoding and decoding methods and a device-cloud collaboration system are disclosed. The encoding and decoding method is implemented based on the device-cloud collaboration system, and can be used to reduce a total device-cloud bit rate while ensuring rendering of an image on a device side. The encoding method includes: performing rendering on a three-dimensional scene to obtain a rendered image, where an intermediate rendering result is generated in the rendering, and the intermediate rendering result includes a first intermediate rendering result; performing a target operation on a reconstructed image based on the first intermediate rendering result, to generate a virtual reference block; predicting the rendered image based on the virtual reference block, to obtain a predicted image; and encoding a residual image between the predicted image and the rendered image to obtain a bitstream.

Abstract: Disclosed are a method for waking up an audio device, and a display apparatus. The method includes: while the display apparatus is in a standby state, in response to a power command input from a user, controlling the display apparatus to enter a power-on state from a standby state, and in response to determining that there is an audio device among a plurality of external devices connected with the display apparatus via HDMI interfaces, controlling the audio device to enter a power-on state first, and then controlling other external devices among the plurality of external devices except for the audio device to enter a power-on state.

Abstract: Disclosed are a method for waking up an audio device, and a display apparatus. The method includes: while the display apparatus is in a standby state, in response to a power command input from a user, controlling the display apparatus to enter a power-on state from a standby state, and in response to determining that there is an audio device among a plurality of external devices connected with the display apparatus via HDMI interfaces, controlling the audio device to enter a power-on state first, and then controlling other external devices among the plurality of external devices except for the audio device to enter a power-on state.