The full name of the DVD is Digital Video Disc, which is referred as "Digital Versatile Disc", which appears following after the CD / LD / VCD / EVD. The DVD player includes DVD Video Player and DVD Audio Player, and now what we common see is the DVD Video Player for playback of high definition DVD players. The initial products used area code restriction technology due to copyright protection. At present the vast majority of China dvd player are full region code products.
See whether the DVD player has virtual surround sound
Pay attention to see whether the DVD player has virtual surround sound when you buy it, this feature will enable you to enjoy a good sound effect when your DVD player is only configured with TV or two speakers, because the average family will not configure the six speakers when watching DVD. The virtual surround sound of he recently launched third-generation DVD by some dvd player brands is not only adapted to the 5-channel and 5.1 channel optic disc, which also adapts to the Dolby Digital channel of the optic disc.
Check the output and input terminals of DVD player
Secondly, the output and input terminals: In general, there is one red and one white stereo audio output terminal on the back of DVD player. Some domestic brands made by professional dvd player factory also have a built-in AC-3 decoder, so these DVD players have 5.1-channel output terminals on the back. So they only need to be configured with 5.1 channel amplifier but don't need to configure the amplifier with Dolby AC-3 decoder, which will save more than one thousand RMB for consumers. At the same time, many DVD players are equipped with Dolby Digital output terminal or DTS terminals; there are coaxial fiber output and optic cable output. Coaxial output terminal is usually orange-red and the cable output terminal is a hexagon outlet, usually the terminal will have a plastic lid. Using the two output terminals will have to converge to a Dolby Digital decoder or receiver, and then you are able to play 5.1-channel music by amplifier. In addition to the two video output terminals, almost all the DVD players will have S-Video output, which separates the color and brightness of the video signal and has the obvious advantages than traditional composite video terminals.
Check the image output, quick release and rewind speed of the DVD player
Currently the CD format on the domestic market is available for CD, VCD1.0, 1.1, 2.0, SVCD, DVCD, MP3 and DVDs, etc. The DVD player mature in technical solutions should be able to smoothly compatible with the above-mentioned disc. The image output, quick release and rewind speed of the DVD player is also one of the indicators for testing DVD player performance. If the image output is slow, it will inevitably affect the viewing effect, DVD with good performance can reach 100 times of the normal speed fastest, indicating that its mechanical structure, circuit and servo structure designs are more complete.