subject: Use common sense: to buy and what to watch TV - LCD TV, plasma TV - household appliances [print this page] Use common sense: to buy and what to watch TV - LCD TV, plasma TV - household appliances
< BR> concerned about the safety of
All the market
TV
Machine should be identified using the 3C. 3C countries have identified that the electrical safety of the products were certified, users can rest assured that the use has not been identified television 3C, the state banned the sale.
TV size of choice
Tube size, there are two specifications, into an effective screen dimensions and the maximum size. Maximum size is the maximum diagonal diameter tube size (bring proof with proof from the tube between the size), we usually refer CRT Size 87 cm (34 in.), 74 cm (29 in.), 64 cm (25 inch) refers to the maximum size. Effective screen dimensions is able to receive television picture tube part of the diagonal image size, the state effectively screen dimensions for TV are strictly limited, that is 87 cm effective CRT TV screen dimensions generally not less than 78.3 cm, 74 cm TV CRT effective screen dimensions generally not less than 67.6 cm, 64 cm effective CRT TV screen dimensions generally not less than 59 centimeters. Since the shell structure of each TV is different, so the effective CRT screen dimensions to be different, but should not be lower than under the CRT screen dimensions effectively.
TV
Models by the maximum size of tube labeling, has become international practice.
Buy TV sets, according to their own living conditions, population size, economic conditions and other factors to decide. Generally 12-14 square meters room, optional TV 35-49 cm; 16-20 square meters room, optional 40-47 cm TV; more than 20 square meters room, optional 47-51 cm even 56 cm TV.
The ideal viewing distance of TV screen height of three times the 42-inch can be drawn
LCD TV
The best viewing distance of 2-2.5 meters; 50-inch LCD rear-projection TVs the best viewing distance of 2.3-3.0 m; 60-inch LCD rear-projection TVs the best viewing distance of 2.7-3.6 meters.
Picture quality choice
Subject to the imaging principle, LCD TVs can only display 262,144 kinds of colors (18-bit color), showing 16 million kinds of colors available in the market for LCD TVs is dithering algorithm to render, so in the smooth gradation level is still less than
CRT
TV, CRT TV can display unlimited colors theory.
Plasma TV
Color CRT TVs with the same realization, through red, green and blue phosphors to achieve by the excitation light, so its color performance of the system can achieve the NTSC CRT TV (referred to as NTSC) level. Currently, some domestic brands with a 3A high-definition display technology. The so-called 3A HD, is a leading video processing technology, can do digital video and audio reception, processing, display the entire process without decay, without distortion, so HD signals perfectly restored. TV screen clarity is determined by three aspects, that is, signal reception, processing, display, if any of the three in the process of decay, the final signal to watch is not the best.
Streaming TV on what to buy
Buy streaming TV to pay attention to two aspects. True streaming TV digital media devices in the broadcast information is not inside the memory space occupied by television itself, must be independent of the streaming media system, otherwise it will affect television ratings.
In addition, buy one computer technical parameters is more significant storage capacity, streaming media system to judge good or bad depends on whether there is also a large-capacity memory, it can be any storage capacity of digital media devices inside the information Play.
