Only For Training And Service Purposes - LG GU280 Service Manual

3.6.7.2 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 2.1.7.2.1 MDP-to-LCD interface functional block diagram
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3. Technical Brief
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