Patent ID: 9019285
Filing Date: 2015-04-28
Classification: G09G

Abstract:
1. A semiconductor integrated circuit device connected to a memory, in which display data for a display device is stored, and which is adapted to read out said display data from said memory to transfer the same to said display device, said semiconductor integrated circuit device comprising: a display data buffer for holding said display data; a memory controller for prefetching said display data in page-size units of said memory to cause said display data to be held by said display data buffer and, upon completion of the prefetching of a page, closing said page to cause said memory to shift into a power saving mode; and a display device controller for transferring the display data held in said display data buffer to said display device; and a dedicated bus for enabling a data transfer between the display device controller and the display data buffer; wherein the display buffer is provided according to a following number of memory units: (2+(data size of horizontal line of display device)/(page size of memory) +1), wherein the (data size of horizontal line of display device)>=(page size of memory).