Information processing device and controlling method for multiple operating systems

An information processing device, comprising:

• a timing controller;
• a system device that operates with at least a first operating system (OS) and a second OS, and outputs, to the timing controller, first original image data from the first OS and second original image data from the second OS;
• and
• a display panel including a plurality of pixels arranged in a predetermined display area, wherein:
• the timing controller includes:
• a memory having a storage area associated with the display area;
• wherein the timing controller:
• stores the first original image data in a first individual storage area assigned to the first OS in the storage area, and stores the second original image data in a second individual storage area assigned to the second OS in the storage area;
• and
• reads stored image data stored in the storage area, frame by frame, and outputs the stored image data to the display panel;
• a register that stores a plurality of pieces of assignment information, wherein:
• each of the plurality of pieces of assignment information includes at least an OS information on the first and second OS that provides the first and second original image data to be written, an origin position and a size of an image that can be assigned, and
• the timing controller selects pieces of assignment information to display the first original image data and the second original image data from the plurality of pieces of assignment information, and
• the timing controller stores the first original image data and the second original image data in respective individual storage areas in accordance with the selected pieces of assignment information.