LCD (Liquid Crystal Display) controller and display control method thereof

Abstract

The invention relates to an LCD (Liquid Crystal Display) controller and a display control method thereof. The LCD controller comprises a slave module, a DMA (Direct Memory Access) channel module, an FIFO (First-In First-Out) buffer, a data format converting module, a 3D (3-Dimensional) processing module, an overly multi-layer overlay module, a DISP (Display) FIFO display cache module and a time sequence module, and supports the functions, such as naked-eye 3D visualization, multi-layer display and automatic restoration. The multi-layer display function is achieved by the LCD controller and isnot subjected to the operation processing of a processor any more, so that the operating speed is increased, and the load of the processor is reduced; the automatic restoration function means that the LCD controller can temporarily stop outputting image data if the condition that bandwidth is insufficient in a short term occurs when the LCD controller plays a high-definition video, and outputs the image data again until the bandwidth is enough, and the image data are sufficient; and as the condition that the bandwidth is insufficient is an occasional and short-term case, the display control method can solve the problems of screen cracking and screen blurring arising from short-term insufficient bandwidth on the basis of not affecting a watching effect.

Description

technical field [0001] The invention belongs to the technical field of chip design, relates to an LCD controller in a digital integrated circuit SoC chip, and relates to an LCD controller and a display control method thereof supporting functions such as naked-eye three-dimensional visualization, multi-layer display, and automatic repair. Background technique [0002] With the integration of image display technology in SoC chips, on-chip LCD controllers have become an integral part of SoCs and have been widely used in the past decade. With the rapid development of the mobile Internet, various rich multimedia applications are continuously integrated into various mobile terminals, and users hope to enjoy more brilliant and realistic visual effects as much as possible. In this context, technologies such as naked-eye stereoscopic viewing, multi-layer display, and high-definition display have emerged as the times require. [0003] Existing LCD controllers display stereoscopic ima...

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is: the existing LCD controller needs to occupy a large amount of processor system resources corresponding to display requirements such as naked-eye three-dimensional visualization, multi-layer display, and high-definition display, which is not suitable for increasingly complex SoC chip systems, and is prone to insufficient bandwidth. This leads to problems such as cracked screens and blurred screens in the LCD; and at present, it can only realize the functions of naked-eye three-dimensional visualization and multi-layer display, which cannot meet the needs of 3D display.

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