Professional analysis LCD mosaic screen, the image is not clear
LCD screen LCD screen is currently one of the most useful users, the application (y ng y ng. O) has been across the entertainment, security, broadcasting and other industries (H ng y) field. In fact, in the installation process of the LCD screen (Gu ch o ng) hardware LCD screen system installation is usually simple, you don't need to spend too much time debugging is relatively complex (F, Z, then connected) in actual operation (operate) encountered in the image display of the case is not clear exactly how to operate? This article will focus on the LCD screen image display is not clear debugging simple analysis (Analyse).
LCD screen image is not clear phenomenon mainly include: low brightness, edge focus, ghosting (image smearing), interference fringe stack (sense signal source image resolution is too high) or serrate (packetloss (zh n)) and other phenomena, image display is a part of a video system. The signal source such as DV
D, camera, computing (J Su, n.) machine, after control (control) transmission products (CH million N P from n) as matrix switcher, distributor, signal transmission cable and other processing, and display to the display terminal. If the display (Xi o, Gu I) is not ideal, is not immediately determine whether a product in question (W n t).
LCD splicing screen image is not clear, commonly used debugging methods are as follows:
The first rule (Remove): the first section inspections, based on the assumption of a section of the problems (W n t), then check out to be excluded if the problem is not resolved (Ji Ju), and to all the equipment (SH B I) to rule out one by one, first check the signal source the resolution and the resolution of the display terminal is consistent, the only way to form the point of the display, the brightness of the image can also be significantly improved if a video signal depends on the standard whether the terminal can adapt and display, if not up to the requirements of the display terminal, you can (t only ng Gu o) properties replacement of equipment or equipment to increase conversion signal changes (x. Ng. Zh).
Second, to see whether the bandwidth of the allocator and the matrix switch and its impedance against the signal source can make the image loss (loss) lowest in the range of the standard distance. There are two kinds of splicing screen, one is the traditional large screen display wall hard splicing technology, and the other is the use of edge fusion technology seamless seamless projector technology. Finally look at the display device (SH B I) the focus and convergence is normal (zh ng, ch ng), and the signal processing circuit is good, the most important (zh ng, y o o) is: in the construction, the signal connector (add-in) strictly, interface (Interface) separately solid line, neat, power line and signal line, and reliable grounding, such as not using UPHOTOSHOP power supply, AC power grounding should be grounded, both ends of the line to mark, convenient inspection and management (management).
In addition, the ghost image, you need to view the transmission cable is too long and too small, solve (Ji Ju) way is to change, or increase the signal amplifier and other equipment. Maintenance errors Samsung LCD splicing screen: a misunderstanding: with a soft cloth, glasses cloth or paper towel to wipe the LCD screen do not use glasses cloth and paper towels to wipe the LCD screen, LCD screen, it is easy to scratch the squeamish. Samsung LCD splicing screen is a single independent and complete display unit, that is, hanging and using, installation is as simple as building blocks, single or multiple LCD splicing screen use and installation are very simple. Focus is poor, you can adjust the display terminal (Terminal) and so on.
