The image signal processing method of large LED screen

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The image signal processing method of large LED screen

Posted On : Oct-16-2011 | seen (368) times | Article Word Count : 640 |

Large LED screen is a digital flat-panel display. This requires it can show text, graphics, animation, images programs, all kinds of information. Full-color LED display purpose is to build giant color display. Large LED screen and plasma display, big screen back projection TVS etc flat-panel display has many similarities. In contrast, LED in the distribution, drive, data decreasing power, improve efficiency, the color of reductive degree and consistency, etc may be less than the other flat panel display difficulty bigger. This is because light emitting diode is without anger, switch time is sexual devices on level, no memory second function, plus its display large area, long distance transmission, cannot use the most advanced COG SOB etc large-scale integrated circuits, the method of manufacturing, below the LED display to image signal processing were briefly discussed(buy led lights).

A kind of method is adopted dedicated big screen signal processor, interlaced scanning TV signal, processed into.scanning signals, then played on the big screen. High-performance processing function processing digits as high as 10 above, doing scanning transform makes interpolation operation, motion prediction and compensation and scanning transform, etc. Now higher-order large LED screen are using this method, and for more image signal processing, the signal to ascend to broadcast, of course effect also better. Computer images also should pass the processor processing, then to the big screen. Processing technology is in constant development, has many new algorithm was proposed. We are familiar with large size of back projection TVS and plasma on a big screen TV are widely using this method, the effect is better than regular TV.
In this case, the output signal is usually after according to transform the signal of the format to describe, appear more exact. Another method is the multimedia method, usually called synchronous screen method, this method by ordinary multimedia card capture TV signal, and demodulation, filter and tone separation etc. Video signals via A/D transformation, carries on the MPEG encoding compressed to storage. Play when compressed again directly on the computer monitor, watching. Sent to big screen signals through special adapter card from the computer on the display card interface or DVI, adapter card to get on some processing.

At this moment, big screen computer monitor or equivalent actually part of its, often referred to as the window, can realize the one-to-one displayed. Because the computer monitor is.scanning and so if not explicitly to should send signals to smoke smoke frame, then do processing, big screen display format is monitor format. For example, VGA format is the number of pixels to manufacture progre ive-scan format for 640x480, its scanning update rate for 75Hz. But here's 75Hz.scanning signal source itself, and not the ascension of image, image quality, in fact, does not improve the level of frame-rate than 50Hz, even poorer some similar to DVD or VCD effect, this is often be confusing place.

As for some screen, for example the ChouHuan the picture even picture information only dropped send messages to display the odd picture, the effect of course worse. Incidentally, the images show mentioned situation is more simple, although some cutscenes also requires good continuity, but for the big screen in the animation broadcast, the picture 10Hz can update rate more than accept. Embedded controller or single chip microcomputer control by the screen, program controller generates by controller processing capacity, the restriction, provide images, causing fast enough picture discontinuous. The most typical phenomenon is by single-chip microcomputer control, the bar screen, in writing when moves left or right shift, not a smooth but jumps. Experience and calculations can draw, a 16XI6 dot matrix characters by 10 composed of whole picture, if bar screen with 5 seconds left, the speed of the move to mobile smooth, its frame frequency coherence 15Hz above must be achieved. from:led light bulbs reviews

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<h1>The image signal processing method of large LED screen</h1> Author: <a href='http://www.articleseen.com/profile_goodscool.aspx'>goodscool</a> Large LED screen is a digital flat-panel display. This requires it can show text, graphics, animation, images programs, all kinds of information. Full-color LED display purpose is to build giant color display. Large LED screen and plasma display, big screen back projection TVS etc flat-panel display has many similarities. In contrast, LED in the distribution, drive, data decreasing power, improve efficiency, the color of reductive degree and consistency, etc may be less than the other flat panel display difficulty bigger. This is because light emitting diode is without anger, switch time is sexual devices on level, no memory second function, plus its display large area, long distance transmission, cannot use the most advanced COG SOB etc large-scale integrated circuits, the method of manufacturing, below the LED display to image signal processing were briefly discussed(buy led lights).

A kind of method is adopted dedicated big screen signal processor, interlaced scanning TV signal, processed into.scanning signals, then played on the big screen. High-performance processing function processing digits as high as 10 above, doing scanning transform makes interpolation operation, motion prediction and compensation and scanning transform, etc. Now higher-order large LED screen are using this method, and for more image signal processing, the signal to ascend to broadcast, of course effect also better. Computer images also should pass the processor processing, then to the big screen. Processing technology is in constant development, has many new algorithm was proposed. We are familiar with large size of back projection TVS and plasma on a big screen TV are widely using this method, the effect is better than regular TV. 
In this case, the output signal is usually after according to transform the signal of the format to describe, appear more exact. Another method is the multimedia method, usually called synchronous screen method, this method by ordinary multimedia card capture TV signal, and demodulation, filter and tone separation etc. Video signals via A/D transformation, carries on the MPEG encoding compressed to storage. Play when compressed again directly on the computer monitor, watching. Sent to big screen signals through special adapter card from the computer on the display card interface or DVI, adapter card to get on some processing.

At this moment, big screen computer monitor or equivalent actually part of its, often referred to as the window, can realize the one-to-one displayed. Because the computer monitor is.scanning and so if not explicitly to should send signals to smoke smoke frame, then do processing, big screen display format is monitor format. For example, VGA format is the number of pixels to manufacture progre ive-scan format for 640x480, its scanning update rate for 75Hz. But here's 75Hz.scanning signal source itself, and not the ascension of image, image quality, in fact, does not improve the level of frame-rate than 50Hz, even poorer some similar to DVD or VCD effect, this is often be confusing place.

As for some screen, for example the ChouHuan the picture even picture information only dropped send messages to display the odd picture, the effect of course worse. Incidentally, the images show mentioned situation is more simple, although some cutscenes also requires good continuity, but for the big screen in the animation broadcast, the picture 10Hz can update rate more than accept. Embedded controller or single chip microcomputer control by the screen, program controller generates by controller processing capacity, the restriction, provide images, causing fast enough picture discontinuous. The most typical phenomenon is by single-chip microcomputer control, the bar screen, in writing when moves left or right shift, not a smooth but jumps. Experience and calculations can draw, a 16XI6 dot matrix characters by 10 composed of whole picture, if bar screen with 5 seconds left, the speed of the move to mobile smooth, its frame frequency coherence 15Hz above must be achieved. from:led light bulbs reviews 
About the Author: <a target="_blank" rel="nofollow" href="http://www.goodscool.net/china-wholesale-electronics/LED-Light-Flash-Lamps/">buy led lights</a>, <a target="_blank" rel="nofollow" href="http://www.goodscool.net/china-wholesale-electronics/LED-Light-Flash-Lamps/">LED screen</a>, <a target="_blank" rel="nofollow" href="http://www.goodscool.net/china-wholesale-electronics/LED-Light-Flash-Lamps/">led light bulbs reviews</a> Article Source: <a href='http://www.articleseen.com/Article_The-image-signal-processing-method-of-large-LED-screen_58570.aspx'> http://www.articleseen.com/Article_The image signal processing method of large LED screen_58570.aspx</a>

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Keywords : image signal, LED screen, processing,

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