M2992 Movement Of The Short Tube Neck High-definition Color Tv Circuit

With the development of the economy and technology, the electronics technologies are developing quickly, especially the household products, which are updating fast at present. The development of color TV experiences several periods. At the beginning of the 1980s, the household TV mostly are mono TV, with only some of the imported color TV. Till to the end of the 1980s, as many TV factories were developing quickly in China, many of the common people could own and watch color TV. As the delegates of TV factories, companies like Changhong, TCL, Prima, Hisense get a great development both in technology develop and production scale. When it comes to the1990s, the later comers like Konka, TCL, Skyworth, Hisense supass the formers and generally rank the top five. The screen sizes from 14 to 38 inches; and the CRT TV experience four periods: NF, SF, PF. Now the CRT color TV has owned many advantages, such as large screen, high-definition, full system, bright picture, excellent tone and good price..Now there are more and more color TV manufacturers home and aboard, having a very firece competition, with comparison with technology and management.In the 21 centuries, the panel TVs delegated by PRIMA and HISENSE, has developed very quickly. Now, as time goes by, the technology of LCD and PDP TV becomes more and more mature, with lower and lower price. For example, you can buy 42 "PDP at the price of more or less than nine thousand RMB, and the 32" LCD for only eight thousand RMB or so, which is almost the same price of the big screen HDTV As the situation is, it makes a big challenge to CRT TV, so it is necessary for CRT TV to make a breakthrough in technology., and for this reason, the develop of a kind of super thin CRT TV is put to schedule.. it is supposed that it will also win a big market if it could be provided with advantages like big screen, high definition, multi-function, super thin and low price。What is more, with the already existing advantages of CRT TV like short response time, good view angle, high contrast and S/N rate, fine verisimilitude, little sporting retainment and cheaper price, which Panel TV has not, it would surely attract the consumer at last.Especially because of the successful application of frequency conversion("F. C.") scaning technology in the digital color TV,the F.C. color TV has gained a incomparable function superority over the common CRT TV. The F.C. HDTV adopts the memorizing and control technology in the digital technology, overcomeing the disadvantage of row-to-row dithering and aread flash, but increasing more sense of fidelity and trans-brightness. The vertical definition therefore improves a lot too. The digital dynamic filter improves the horizontal definition, decreasing the mutual interruption between brightness and colorness caused by the frequence interlacing. because of the application of these two technologies, it can get the best picture definition that the present CRT color TV system can posiblely reach, additionally, it has HDTV interfaces like YprPb, VGA, DVI, HDVI, S-VEDIO, which facilitate its connection to the household computer and DVD Etc.Facing with the market develop and change, as early as it was 2004, XOCECO thought and put forward its plan of develop the super thin HDTV. To realise working at the status of horizontal frequency of 33.75k and vertical frequency of 60HZ, with ability to receive many kinds of HDTV signals, such as VGA, SVGA, chinese HDTV and American HDTV signal, and to poccess interfaces like AV IN/OUT YPbPr, YCbCr, D-SUB, to be provided with advantages like high definition, super thinness and novelty appearance, all the above is undoubtedly to bring about many technolody difficulties to the product develop. especially when it adopts the super thin CRT, because the H/V circuit works under high voltage and big current, the requirement to the key component needs to be higher Meanwhile,it increases the both of circuit complexity and cost, and bring more difficulty to the product's R&D. Consequently, after much discussion and reserch within the relevant department, my company decides to adopt the system of CRT, ST9656 supplied by Korean Sunsam and the Frequency Conversion project by HUAYA com., using the 2992 cover of novelty appearance。After the concerted effort by relevant department for more than half year, we have overcome many technique difficulties and come to the final success of the developing of this project.