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Method and apparatus for playing video image

A playback method and video image technology, applied in image communication, television, color television, etc., to achieve the effects of stable performance, low price, and high reliability

Inactive Publication Date: 2008-06-18
谢剑斌 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the existing problems, the present invention proposes a method and device for playing video images, which can solve the problem at low hardware cost

Method used

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  • Method and apparatus for playing video image
  • Method and apparatus for playing video image

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Experimental program
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Embodiment Construction

[0009] refer to figure 1 , has described the system composition of the video image playing host computer of the present invention, wherein (1) is CPU, adopts high-performance AT91SAM9261; (2) is USB interface, can directly support the read and write operation of U disk; (3) is SD card The interface can directly support the read and write operations of the SD card; (4) is the video distribution and driver interface, and the video output is used for external projectors and video monitors; (5) is the video DAC, which converts digital video into analog for easy transmission Broadband video; (6) is FLASH memory, stores the system program of video image playing host computer; (7) is SDRAM, provides video data memory for video image playing host computer, realizes the parsing operation of video image; (8) is infrared receiving unit, Receive operation commands from the user's remote control.

[0010] refer to figure 2 , describes the user remote control circuit of the present inven...

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PUM

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Abstract

The invention relates to a video image playing method and a device which includes a CPU, a remote controller and infrared receiving interface, an SDRAM, a FLASH, a USB interface, an SD card interface, a video DAC and a video distribution drive. The CPU adopts AT91SAM9261; the remote controller includes a microprocessor, an oscillation circuit, a keyboard scanning circuit and an infrared emitting circuit; the microprocessor adopts STC12C2052AD; the SD card interface adopts an SPI communication mode; the video DAC adopts ADV7123 and is connected with a liquid display interface of the CPU; the video distribution drive adopts MAX469 and is connected with an output RGBHV of the ADV7123. The method and device all adopt industrial grade elements. The remote controller is convenient for teaching. The invention has the advantages of low cost, power saving, high reliability and safe use.

Description

Technical field [0001] The invention relates to a method and device for playing video images, in particular to a method and device for playing video images that can be applied in the field of education. Background technique [0002] At present, the projection system is being widely promoted and applied in the field of education, which consists of a computer host, keyboard, mouse, video distributor, host monitor and large-screen projection equipment. This kind of system composition has some defects: first, except for the large-screen projection equipment, the total cost of other equipment is more than 6,000 yuan; second, there are as many as six pieces of system equipment, which is very troublesome to install and debug, and the system maintenance workload is heavy. It is not simple to use, it is easy to be infected with computer viruses, and the operation is inconvenient. It needs to be operated by keyboard or mouse to realize the forward and backward of the slideshow; third,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/00G09G3/36G08C23/04
Inventor 谢剑斌庄钊文唐朝京李沛秦程江华阎伟刘通谢昌颐
Owner 谢剑斌