Chapter 1253 There is a big event in the family 17

1.

At this point, let's take a look at the history of VCD and DVD players.

In September 1993, the world's first VCD player "Wanyan" was successfully developed in Hefei, causing a sensation in the country and even the world. When "Wanyan VCD" was put on the market at a "high price" of 4000-5000 yuan each, the first batch of 1000 VCD machines were bought by various electronic manufacturers across the country as soon as they were put on the market, and the sales of VCD machines were extremely hot.

Just when "Wanyan" is trying to make a big splash, VCDs of brands such as Aiduo, Xinke, Xiaxin, Malatana, Jinzheng, and Xianke have flocked to the market. These electronic manufacturers immediately occupied most of the market by studying the VCD products manufactured by the prototype of "Wanyan". From 1995 to 1997, the media once used the term "blowout" to describe the prosperity of the VCD market. However, at that time, the VCD machine was not cheap, most of the well-made brand machines were between 2,000 yuan and 3,000 yuan, although later with the intensification of competition between electronic enterprises, the price of VCD machines has decreased, but the quality of good brand machines has to be about 2,000 yuan. 2,000 yuan is not a small amount in the rural areas of the Hushan area, and it may be the net income of a family for a year. Therefore, at that time, VCD machines were not popular in the rural areas of the Toyama area, that is, those fashionable young people went to buy a VCD machine when they got married. It's just that many of the VCD machines bought by these young people in the village are not brand machines, but those miscellaneous goods pieced together by those small handicraft workshops, and there are often jams when playing discs, and the quality is not worth mentioning at all. But even so, these low-quality VCD machines are like babies in the eyes of these young people, and they are carefully placed at home like babies on weekdays, and they are reluctant to use them and are reluctant to borrow them.

In the spring of 1997, when he married Xu Dan, the county department store and home appliance department already had VCD machines for sale, but the price of VCD machines at that time was too high, and the spring did not have enough understanding of the new electronic products, so the spring gave up the new thing of VCD machine and chose to buy a Hitachi VT-FX6500A recording and broadcasting camera, which was of good quality and fully functional recording and broadcasting camera that year, which also caused a sensation in Shimengouzi Village and the compound of Hushan Middle School.

2.

In fact, those young people didn't know that the one Chunyu just used was a DVD instead of a VCD, and this DVD player was a brand machine that He Xinyan spent more than 2,000 yuan to buy before she got married. He Xinyan loves singing and dancing since she was a child, from school to work, she has always been a literary backbone in school, He Xinyan bought this high-quality DVD player purely as a personal hobby, but I didn't expect it to come in handy today.

DVD player, also known as high-density digital video player, is a newer generation than VCD player. DVD uses MPEG-2 technology and AC-3 standards to compress and encode video and audio signals, respectively.

As a replacement product of VCD player, DVD player is different from VCD player in the following aspects.

For one, the image clarity is different. The general image definition of VCD is about 280 lines, while the image definition of DVD can reach 500 lines, and some are even as high as 720 lines. In other words, in terms of image clarity, DVD can be about double to two times better than VCD.

Second, the accompanying sound signal is different. VCDs have only two channels, left and right, and have a general stereo output signal. The DVD generally adopts the standard for AC-3 such an audio compression standard, AC-3 generally has 5 channels of sound signal output, and there is a super bass, so it is known as 5.1 channels, DVD can really create a home theater with a stereo surround effect.

Third, the size of the platter is different. In terms of disc size, the two are the same, both are 12 cm, the difference is that the DVD player can still play VCD discs in addition to DVD discs. To get the most out of your DVDs, you need to use a TV with at least 400 lines of horizontal clarity, and if you want DVDs to be able to play true surround sound, sound reproduction systems such as speakers and amplifiers need to be equipped with Dolby Digital*.

Fourth, DVD and VCD have different capacities and compression formats. The capacity of a VCD is about 800M, and the capacity of a DVD-5 can reach 4.7G, which is equivalent to 6 times that of a VCD. VCD is compressed using MPEG1, while DVD is compressed using MPEG, and the image is clearer. In terms of sound quality, VCD only has a general left and right two-channel output, while DVD can do AC-3 Dolby and DTS and other 5.1-channel or even 7.1-channel audio decoding, which is more subwoofer and surround sound than two-channel, so the sound effect is needless to say. The reason why I feel that the sound effect of DVD and VCD is the same, maybe it is the sound output of only TV or two-channel amplifier, because TV is also two-channel output. If you want to feel the real sound effect, you have to use a 5.1 amplifier to hear the real sound effect of the DVD.

The Haier all-media all-digital "pioneer" color TV purchased in the spring,Both in terms of TV clarity and sound standards are very consistent with the requirements of DVD players,Chunyu has just set the sound effects of DVD players and TVs to surround sound when playing,Therefore, such a shocking effect will appear in such a small space。