Patent ID: 8451280
Filing Date: 2013-05-28
Classification: G09G

Abstract:
1. A display control device comprising: a first display device; a second display device; a display output section which supplies image data to the first display device and the second display device; an image data storage section which stores image data; a temporary storage section which includes a frame buffer that temporarily stores image data read from the image data storage section; and a buffer control section which controls timings of writing and reading image data to and from the frame buffer, wherein at a first display timing, the display output section wherein at the first display timing, the buffer control section performs control to prevent a portion of the first image data which is stored in the frame buffer and which has not yet been read by the display output section from being overwritten by the second image data read from the image data storage section, wherein at a second display timing that is the display timing occurring immediately after the first display timing, the display output section wherein at the second display timing, the buffer control section performs control to prevent a portion of the second image data which is stored in the frame buffer and which has not yet been read by the display output section from being overwritten by the third image data read from the image data storage section, wherein the display control device further comprises an image data generation section which generates image data to be displayed in one of the first display device or the second display device at an update rate lower than a display rate of the one of the first display device or the second display device, and which stores the generated image data in the image data storage section, wherein the image generation section comprises an update rate information acquisition section which acquires information about an update rate used to generate image data, wherein, when the display output section determines that the update rate of the image data generated in the image generation section is higher than a predetermined threshold value, the display output section transmits the image data to the first display device or the second display device from the image data storage section without writing the image data in the frame buffer, and wherein, when the display output section determines that the update rate of the image data generated in the image generation section is lower than a predetermined threshold value, the display output section sets the frame buffer as a dedicated frame buffer in which only the generated image data is written.