Display driving circuit and operating method for performing encoding and decoding

A display driving circuit comprising:

• a graphic memory configured to store slices;
• a first decoder configured to decode an update slice and a standby slice;
• a second decoder configured to decode a still slice;
• an image-processing pipeline configured to perform image-processing;
• a second encoder configured to generate the still slice;
• and
• a controller,
• wherein the controller is configured to:
• receive the update slice,
• write the update slice to at least a portion of the graphic memory,
• identify a type each slice of a plurality of slices stored in the graphic memory,
• control the first decoder to decode the update slice and the standby slice to obtain first decoded data,
• control the image-processing pipeline to image-process the first decoded data,
• control the second decoder to decode at least one still slice among the plurality of slices stored in the graphic memory to obtain second decoded data, and
• integrate the second decoded data with the image-processed data to obtain integrated data.

An electronic device comprising:

• a processor configured to encode at least one slice including pixels changed between a previous frame and a current frame by using a first encoder, and transmit the at least one slice encoded based on the first encoder as an update slice to a display driving circuit;
• the display driving circuit configured to:
• receive the update slice,
• write the update slice to at least a portion of a graphic memory,
• identify a type of slices stored in the graphic memory,
• control a first decoder to decode the update slice and a standby slice to obtain first decoded data,
• image-process the first decoded data,
• control a second decoder to decode a still slice among slices stored in the graphic memory to obtain second decoded data, and
• integrate data decoded based on the second decoder with the image-processed data to transmit an image signal to a display panel;
• and
• the display panel configured to receive the image signal and displaying an image based on the image signal.