LED display screen control card for asynchronous control system
A LED display and asynchronous control technology, applied in static indicators, instruments, etc., can solve problems such as inability to meet high-definition multimedia information display, lack of versatility of circuit boards, limited loading capacity, etc., to save circuit board space, Rich peripheral interfaces, the effect of improving the loading capacity
Inactive Publication Date: 2015-12-02
NANJING UNIV
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Problems solved by technology
[0004] At present, the function of the LED display control card circuit board on the market is relatively single, and its load capacity is also limited, which cannot meet the display of high-definition multimedia information.
Moreover, the circuit board is not universal. In order to meet different needs, it can only be redesigned, which will greatly increase the development cost
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[0026] The solution of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0027] The LED display control card for the asynchronous control system of the present embodiment is mainly made up of microprocessor module 1, display module 2 and peripheral interface circuit, see figure 1 . The microprocessor module includes an embedded processor core, DDR3 memory and eMMC memory. The display module includes a processing chip, Flash memory, display driver chip and LPDDR memory chip. The embedded processor core is connected to other peripheral interface circuits. The embedded processor The core communicates with the DDR3 memory, the eMMC memory, the processing chip and the peripheral interface circuit respectively, and the processing chip communicates with the Flash memory, the LPDDR memory, the display driver chip and the peripheral interface circuit respectively. The microprocessor module in this embodiment is integrated on an in...
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The invention relates to an LED display screen control card for an asynchronous control system. The LED display screen control card comprises a microprocessor module, a display module and a peripheral interface circuit, wherein the microprocessor module comprises an embedded processor core, a DDR3 memorizer and an eMMC memorizer; the display module comprises a processing chip, a Flash memorizer, a display driving chip and an LPDDR memorizer chip; the embedded processor core is connected with other peripheral interface circuits and is respectively in communication connection with the DDR3 memorizer, the eMMC memorizer, the processing chip and the peripheral interface circuit; the processing chip is respectively in communication connection with the Flash memorizer, the LPDDR memorizer, the display driving chip and the peripheral interface circuit. The LED display screen control card has the following benefits: the asynchronous control system can be carried, multimedia display can be independently achieved in the absence of an upper computer, and the cost is reduced.
Description
technical field [0001] The invention relates to the field of LED display control, in particular to an LED display control card used in an asynchronous control system. Background technique [0002] Existing LED display screens are widely used in various fields of society, and are mainly used to display multimedia information such as videos, pictures, and texts. [0003] LED display control system can be divided into synchronous control system and asynchronous control system according to different control methods. The synchronous control system works in the connection mode of upper computer—>sending card—>receiving card—>LED display screen. During multimedia display, the display of each LED screen requires the participation of the upper computer and the sending card. However, the asynchronous control system does not need the host computer and the sending card to participate in the multimedia display. It can put the multimedia data on the control card through the SD c...
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IPC IPC(8): G09G3/32
Inventor 潘红兵陈辉徐天伟李晨杰李可生杨博陈金锐李宇唐海亮陆振飞李丽何书专
Owner NANJING UNIV