Car dvd is the multimedia playback system installed in the car to provide audio and video entertainment for the car ride. In addition to playback the dvd format DVD, the car DVD also supports VCD / MP3 / WMA / MP4 / Divx / CD / CDR /CDRW / JPEG and other formats of video files and discs, and some also support SD, USB, IPOD and so on. According to the installation location in the car,nissan dvd player is divided into the sun visor dvd, ceiling dvd, headrest dvd, single spindle and double spindle dvd and so on.
Notes for the purchase and installation of car DVD products
Currently the proportion of Car DVD in the automotive electronics products is growing and nearly 40% of new car owners have needs to install Car DVD. Therefore, all kinds production and OEM DVD navigation products emerge, the differences in the quality of the products is more than that you can imagine. The speakers of many DVD products will emit squeaks once being installed on the car when you step on the gas stereo, sound and image are very poor, so we remind everyone should focus attention to the following points in the purchase and installation of car DVD products:
First, Car DVD sound quality
DVD is used to play music, so whether the sound quality is good or bad is very important. Therefore, you should be sure to ask clear that how many "V" is the output of this DVD player before buying the mazda navigation dvd, or compare sound quality of this machine with other DVD players. If the sound quality of the car DVD player can compete with CD player sound quality, then the price will not be cheap.
Second, Car DVD images and DVD player proportioning
DVD screen is available for analog screen and digital high-definition screen two kinds. Analog screen pixel is generally 240 x 240 or 480 * 240, while the pixel high-definition screen is 800 * 480 pixels or higher. In addition, a good DVD usually uses dual CD-ROM that is DVD and CD two kinds of optical drives.
Third, Car DVD navigation accuracy and ease of use
Good DVD manufacturers will apply better navigation software. The poor DVD navigation is easy to crash in the navigation process, or slow navigation, so the navigation accuracy is relatively poor. Good DVD navigation uses "dual core" model that is two independent CPU processing systems, so that the two systems don't interfere with each other, the navigation speed is faster, accuracy is higher and easy to use.
The article is come form:http://www.dvdincar.com/blog/?p=9