In terms of video, the system not only realizes standard definition, but also realizes eight different video quality from VCD to HD, which fully supports various use requirements and use environments including HD digital TV, and can be directly used as test equipment and home entertainment equipment in the production of HD digital TV.
In terms of audio, the system adopts EAC audio compression technology with independent intellectual property rights, which not only fully supports mono, dual channels and 5. 1 channel, but also has better performance than DolbyAC-3, which is usually used in DVD players and charges high license fees.
In terms of subtitles, the system inherits and develops the research results of Super VCD, realizes 256-color floating subtitles and supports transparent colors. The display quality and flexibility of subtitles are far superior to DVD subtitles.
In addition, more importantly, EVD obtained 22 patents, developed 5 sets of software, and was tested by a third party. Compared with super VCD and DVD system, EVD has obvious technical advantages, which fills the gap in the storage and playback of high-definition programs in China, which is a pioneering achievement in China. Among them, the audio compression algorithm (EAC) with independent intellectual property rights is adopted to generate better audio than Dolby AC-3 at the same bit rate, reaching the advanced level in the international audio compression field.
What are 1 and EVD?
EVD is a DVD upgrade technology independently developed by China enterprises with the strong support of the Ministry of Information Industry, in order to resist the restriction of DVD technology on China enterprises. EVD's HD technology passed the national technical appraisal in early 2002, and was successfully applied to the production of home HD DVD players by DVD players such as Shinco, SVA and Amoi. EVD disk drive was launched in June 2004 at 5438+ 10, and passed the high-definition inspection by the Ministry of Information Industry in September 2004. SVA's EVD388 was rated as "the most popular home appliance product in 2004" by Sohu. The new EVD8830 was named "Top Ten Innovative Products in 2004" by People's Daily. [Next Page]
At present, EVD has more than 20 national invention patents and 10 international invention patents, and its technology is in the leading position in the world. 2. Where is 2.EVD better than DVD?
The resolution of DVD is 720×576(PAL system) or 720×480(NTSC system), and the effective number of pixels of each picture is 350,000. The output signal of EVD disk drive is in 1080i and 720p HD format, with 2.07 million effective pixels, which is more than five times that of DVD. The color saturation and brightness of EVD picture are much higher than that of DVD, and the color reproduction ability is several times that of DVD, so the picture is very delicate and realistic.
For example, if you watch it through EVD, five small black dots close together on the screen are clearly visible, and if you watch it through DVD, it is a big black dot.
EVD audio compression adopts ExAC technology, which can realize high fidelity and surround sound at the same time. In the evaluation of the Ministry of Industry and Information Technology, the sound effect of EVD is 4.7 points (out of 5 points), which is 0.2 points higher than that of Dolby. Therefore, EVD brings absolute fever-level auditory enjoyment.
3. Can 3.EVD play DVD?
Yes, EVD can not only play DVD, but also play programs in super VCD, VCD, CD, MP3 and other formats, and the discs of ordinary people's homes will not be wasted.
Playing DVD and VCD simultaneously with EVD can improve the picture output quality by more than 30%.
4. When will 4.EVD replace DVD?
HDTV has been widely accepted by consumers. By the end of this year, the sales volume is expected to reach100000 units. EVD is an important program input source for consumers to enjoy high-definition audio-visual effects, and it will be popularized rapidly. Before the Olympic Games, at least in large and medium-sized cities, EVD will definitely completely replace DVD.
5. What is the significance of 5.EVD's independent intellectual property rights?
As DVD technology is mainly in the hands of foreign enterprises, especially Japanese enterprises, China, as the largest producer of DVD players, will give foreign enterprises a patent fee of $654.38+$200 million every year. EVD has China's independent intellectual property rights, which means that, on the one hand, China enterprises can no longer be restricted by DVD technology, which greatly saves costs; On the other hand, if foreign enterprises want to produce, they must pay royalties to China people to increase their income. This is a successful case that the country advocates intellectual property strategy, and it is also the only way to strengthen the country and enrich the people in the economic period. 6. Why does EVD attach importance to anti-piracy measures?
On the surface, piracy can make us buy cheap CDs, but in fact, it will ultimately harm our own long-term interests. EVD does the best in anti-piracy, that is, it gives the profits taken by pirates to consumers. In fact, because the anti-piracy version of EVD is very powerful, producers are willing to issue discs at relatively low prices, and gain legitimate profits through the scale advantage of low-priced genuine discs, while consumers can enjoy low-priced genuine discs at the same time.
Anti-piracy is also an important measure to enhance the national image. EVD gives consumers a chance to praise genuine products. Let's support genuine copies and the legitimate rights and interests of copyright owners.
7. Are there any other HD DVD players in the market besides EVD?
At present, the high-definition standards in Europe, America and Japan are all defined as 1920× 1080i or 1280×720p. EVD is the first disc player in the world that fully meets the high-definition standard, and it is also the only one that we can buy in shopping malls and has been tested and approved by the Ministry of Information Industry.
8. Will 8.EVD disk drives be expensive?
No, the EVD DVD player has entered mass production, and its price is equivalent to that of a well-known brand DVD.
The price of EVD is slightly more expensive than ordinary DVD, because EVD compresses and decompresses high-definition content, and its digital capacity is five times higher than that of DVD, so it uses a home appliance chip with strong computing power-equivalent to Pentium IV in a computer chip.
Why did 1 1 and EVD bring about the film revolution?
EVD technology has been applied to digital cinema players, and the effect is exactly the same as that of advanced cinema projectors (35mm cinema projectors), but the price is only 1% of that of traditional cinema projectors, and every family's living room can be turned into a cinema. Therefore, EVD brought a movie revolution.
HDTV is the abbreviation of HDTV, which means "HDTV" when translated into Chinese. Both HDTV technology and DTV technology originated from DTV (DigitalTelevision) use digital signals, and HDTV technology belongs to the highest standard of DTV and has the best video and audio effects. HDTV is different from the traditional TV system which adopts analog signal transmission at present. HDTV uses digital signal transmission. Since the collection and production of TV programs, the transmission of TV programs and the reception of users' terminals are all digital, HDTV brings us extremely high definition, with the highest resolution of 1920× 1080 and the frame rate of 60fps, which is enough to make the current DVD ashamed. In addition, the screen aspect ratio of HDTV has changed from 4:3 to 16:9. If you use a big screen monitor, you will feel like you are in a cinema. At the same time, due to the use of digital technology, the signal anti-noise ability is greatly enhanced. On the sound system, HDTV supports Dolby 5. 1 channel transmission, which brings people high-fidelity auditory enjoyment. Compared with analog TV, digital TV has many advantages, such as high-definition pictures, high-fidelity stereo, TV signals can be stored, multimedia systems can be completed by computers, and frequency resources can be fully utilized. Many advantages will inevitably promote HDTV to become the main force of home theater. #hc360 paging
The biggest feature of HDTV is high definition, but at present, most display devices such as rear projection, LCD, plasma, etc. The resolution of the signal source may not be reached, that is, the display device cannot give full play to the advantages of the signal source. According to the survey, the projector is the display device that can perfectly represent HDTV, and the projector is also the playback device that players want most. The biggest advantage of the projector is its large screen, which can easily reach more than 100 inch, and its visual impact is very strong. At present, most video projectors only support 720p and 1080i resolution formats, and a few can support 1080p resolution formats. However, even the 720p projection picture has much higher definition than DVD, and the current DVD only provides 480i or 480p format output.
As a traditional display device, the maximum size of TV is about 50 inches, and the default aspect ratio of the screen is 4: 3. Snowflakes and flicker often appear, which really cannot meet people's demand for large-screen display. Although large-screen TVs supporting 16: 9 and 4: 3 modes appeared later, such as plasma TV, rear projection TV and LCD TV. It is also difficult for them to break through the limit of 100 inch, and they have to be ashamed of themselves compared with the projector's 100 ~ 300 inch. Moreover, the traditional TV set is too big and bulky to move easily, with a large amount of heat dissipation, easy scratching of the mirror surface, interference from mirror reflection and high price.
In contrast, as a new generation of display equipment, projection has been widely used in China's education and business fields, and has shown great development potential in the home market. Its advantages are: high image quality, the projector has been able to output 1080i, 720p or higher signal formats, and can be compatible with different signals; Large screen display, the projector can easily realize the large screen display of 100 inch or more; And there is an advantage that any TV set can't match, that is, the size of the projection picture can be adjusted at will and can be moved and used at will. So the marriage between HDTV and projector is unstoppable.