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Hardware integrated design of the video liquid crystal display control of YUV format and RGB format

A display control and control module technology, applied to static indicators, color signal processing circuits, instruments, etc., can solve the problems of occupying too many MPUs and occupying a large memory, and achieve the goal of reducing storage space, reducing occupancy rate, and low manufacturing cost Effect

Inactive Publication Date: 2009-09-02
无锡紫芯集成电路系统有限公司
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Problems solved by technology

[0005] In order to overcome the shortcomings of occupying too many MPUs and taking up large memory when MPEG is decoded into YUV image format and played, the present invention provides a hardware design that supports video display in 8-bit YUV 4:2:0 format and solves the above two problems. question

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  • Hardware integrated design of the video liquid crystal display control of YUV format and RGB format
  • Hardware integrated design of the video liquid crystal display control of YUV format and RGB format
  • Hardware integrated design of the video liquid crystal display control of YUV format and RGB format

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Embodiment Construction

[0015] The specific embodiment of the present invention is described below in conjunction with accompanying drawing: see figure 1 , 2 , 3. This implementation mode takes a liquid crystal display with a resolution of 6×4 as an example, figure 2 is the sampling model of the YUV data format used in the present invention, the letters in the circle and the diamond represent their respective signal components, and every four adjacent Y components share a UV component. image 3 It is the data arrangement of the image data output by the invention on the liquid crystal display with 6×4 resolution.

[0016] When the present invention displays the image data in RGB format, the image data is transmitted to the YUV and RGB data flow control module through a channel of DMA, and then directly input to the RGB display control module by the YUV and RGB data flow control module and displayed on the liquid crystal display show.

[0017] When the present invention displays image data in YUV f...

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Abstract

The invention discloses a hardware integrated design which supports the video display control of an 8-bit 4:2:0 YUV format and a 16-bit computer RGB565 format and supports the liquid crystal display of the formats with the resolution of no more than 1024*1024. In the display of RGB, a hardware utilizes one channel of DMA for obtaining the data of RGB from the memory and then uses the display control of RGB for displaying the data on a liquid crystal screen; in the display of YUV, a hardware utilizes two channels of DMA for respectively caching part of the U and V data in the memory into a special storage space of 1KB in the hardware. Simultaneously, the Y data is read from the memory through one channel of DMA and the YUV format is converted into the RGB format by a YUV-to-RGB computing module and then the Y data is output onto the liquid crystal display.

Description

technical field [0001] The invention relates to a hardware integration design for video liquid crystal display control compatible with YUV format and RGB format, which can be widely used in portable devices and handheld devices, such as mobile phones, cameras, MP3, MP4, game consoles and the like. Background technique [0002] The display control module of the current embedded chip basically can only display RGB data, and the image data generated by decoding MPEG series video images usually adopts 8-bit 4:2:0 format YUV format (or YCrCb, is A form of color encoding that uses a luminance Y signal, a color U signal, and a saturation V signal). The commonly used method is to convert YUV into 24-bit RGB or 16-bit RGB image data through software calculation, and then transfer the RGB data to the memory space of the display controller, and reflect the RGB data in the memory to the display controller through the RGB display control module. Displayed on the LCD display. [0003] C...

Claims

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Application Information

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IPC IPC(8): G09G3/36H04N9/64
Inventor 刘翔何咏刘文江
Owner 无锡紫芯集成电路系统有限公司
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