LG Electronics LG-C320 Mobile display processor, MDP-to-LCD interface functional block diagram

3. TECHNICAL BRIEF

3.1.7.2 Mobile display processor

The MDP is a hardware accelerator primarily responsible for transferring an updated image from the QSC memory subsystem to the LCD module. The transferring of an updated image is an operation that is shared between software, video processing, and graphics processing, so a common block helps to reduce redundant circuitry. The MDP is designed with the assumption that the LCD panel has an embedded LCD controller and a frame buffer. The image transfer is then the copying of the image from the QSC memory system to the frame buffer within the LCD module.

While the MDP is transferring an image to the LCD module, it can perform a final set of operations to the image. The set of operations that the MDP can perform has been chosen to maximize the efficiency of the QSC memory subsystems, typically removing two or more copy operations of the image to and from memory.

The MDP reduces redundant circuitry and offloads the ARM and aDSP from memory-transfer operations and a certain set of graphics and video operations

Figure 3.1.7.2.1 MDP-to-LCD interface functional block diagram

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