subject: Experts Teach You How To Buy High-definition Tv - Buy High-definition Television - Hc Network [print this page] Just take more than 1000 yuan, you can buy so-called "high-definition TV"; the same size plasma TVs and LCD TVs, but the difference may reach million yuan ... ... If you are not professionals, To select the true high-definition TV a bit difficult. In this connection, the author interviewed Technology Research Institute, Shanghai Quality Supervision, Inspection and Testing Institute for Electrical and Electronic quality experts.
Buy a color TV in the future if the election 720 to buy high-definition TV, you should know "line." It is reported that, in the Ministry of Information Industry announced the 25 criteria, the "digital television receivers??? Display standard" has become the focus of the industry. Under the regulations, plasma TV, LCD TV, LCD rear projection TV, CRT rear-projection TV, to be identified as high-definition digital TV, at least to meet the resolution to 720 lines or more; CRT digital TV has been identified as high-definition TV, HD must be more than 620 lines. The so-called line is the definition of value units, said the naked eye can see, from the TV show the image clarity. Experts explained that the definition is an important indicator of high-definition television. True high-definition television, need to display both horizontal and vertical lines to 720.
Since the standard has just introduced, therefore, look at the "line" to buy color TV, will become an important method of purchase. Although the resolution and aspect ratio to seize the ministerial HD standard has not yet implemented, but experts said the purchase HD TV at this stage, the physical display resolution can be as an important reference. Experts stressed that the physical display resolution of HD TV is not the only criterion for evaluation, plus the circuit configuration, the combined effect of all, to achieve high definition results. Specifically, the resolution must be to or greater than 1280 720, may meet the definition TV sets have reached more than 720 high-definition television standards. The resolution of 1366 768 of the TV, if coupled with appropriate circuit configuration can certainly achieve the high-definition.
There is also a simple purchase
rules, see the standard TV ratio of the width and height, or aspect ratio. Experts say an ordinary color TV horizontal width and height ratio is 4:3; high-definition TV to 16:9 and to achieve wide-screen effect. Although the common color TV in the image displayed can be converted to 16:9, but this way, the display will be discounted to some extent, also called TV screen big enough. So look, the high-definition television obviously is more than the average TV "wide." LCD and plasma to buy a big expert further noted that the national standard of 720 lines, 42-inch plasma TV will have a certain impact. Because the general resolution of only 852 480, can only be achieved SD. Even better products, and its resolution only in the 1024 768 or 1024 1024, are lower than the 1280 720. Now the price has dropped sharply, to 10,000 yuan or less. In fact, foreign, 852 480 42-inch plasma TV were already out of product.
Contrast, 50-inch plasma TV above the basic up to high definition standards, because the resolution up to 1366 768. LCD TV in high definition standards are also facing less than 30 inches high definition LCD TVs will be able to meet the standards. Experts give consumers a little suggestions: high-definition TV is the high-end products, the promulgation of standards will cause certain impact on the market. With the fake "HD" prices continue to "diving", have maintained a high price, and can to some extent on its genuine. And supporting a number of program source must buy a high-definition TVs to consumers usually have this question: how buy a home TV set in place so do not store well? In fact, introduction of high definition television standards, the high-definition television programs also face the source of the problem.
If it is to have access to true high-definition television, must have three conditions: high-definition television programs, HD programming transmission system, high-definition TV and set-top boxes. It is understood that our country begin broadcasting high-definition channels only CCTV and Shanghai Media. The high-definition set-top box prices are 1,500 yuan more than the normal standard definition set-top box prices 3 times higher. Moreover, the current domestic HD programming and HD channels are very scarce, only the CCTV and Shanghai Media Group media launched a high-definition channels, digital TV users the cost of opening a high-definition channels are 100 yuan per month above the price for ordinary consumers high.
