Display Driving Module Frame Buffering for Power Reduction

The patent implements panel self-refresh (PSR) technology where the display panel periodically refreshes its own content without continuous data transmission from the application processor. The display driving module stores frame data in a buffer and performs periodic scanning and refreshing of the panel using stored data, thereby reducing the frequency of data transmission while maintaining display quality. This periodic action allows the system to meet ultra HD display requirements while significantly reducing power consumption compared to continuous transmission.

The patent extracts the frame data processing function from the application processor and places it in the display driving module's buffer memory. By taking out the storage and scanning functions from the main processor, the system can handle ultra HD data volumes without overloading the application processor. The display driving module independently manages the scanned frame data and outputs it to the display panel, reducing the computational burden and heat generation in the main processing unit while maintaining high data processing capability.

The patent implements preliminary action by having the display driving module pre-store multiple frames of data in its buffer before the application processor needs to transmit new content. The buffer is prepared in advance with sufficient frame data to maintain the display refresh rate. When the application processor generates new frame data, it only needs to transmit when the buffer requires updating, rather than continuously transmitting all frames. This preliminary preparation reduces the real-time processing load on the application processor while maintaining high display refresh rates.