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As the DVD technology development, more and more cars like to be installed the DVD player in their own car, usually, the car dvd player is mounted either in the ceiling of the car backseat or in dash. Cables feed the signal to monitors mounted to the ceiling of the cabin or in the headrests of the front seats. The DVD players are usually installed by the automotive manufacturer, and are tied into the car's stereo system. It project audio into the car's speakers. aftermarket car dvd units also can tie into the car's speaker systems, but may have their own independent speakers. A lot of units come with the wired or wireless headphones, so you can watch a DVD in the backseat, without disturbing others. Train tracks and a host of bumps and dips in a moving car, graded pavement can cause skipping and jumping of video. Sometimes, sudden movement can jar the laser and interrupt the reading of the disc, while players often Lock the disc in. An important feature of car units is buffering, sometimes referred to as “anti-shock memory”. The DVD actually will delay seconds when starting to operate. The reason of that is to store video in its memory. Continuous video can be provided by the buffering, while the laser resets itself. The indash car dvd which are installed by the automotive manufacturer are tied into the electrical system of your car. And these types of player can ran its power off just like any other component would. By comparison, aftermarket car dvd units can acquire the power through rechargeable batteries and converters which plug into dashboard outlets that used to power cigarette lighters. more information . . .

Nowadays GPS navigation systems have became a necessity for car drivers and its not as new invention as most people think; they have been widely used ever since the first GPS satellite was launched into space .but its not only used for navigation but for entertainment such as car DVD NAV. Though, GPS systems for cars are not that complicated than it for airplane. Transportation by car is dependent on the roads that are traveled. During many years development for automobile GPS navigation system, industry has tried various ways to implement them. For example certain company introduced car navigation system that was based primarily on an accelerometer, not on GPS. After some innovation, Automobile GPS Navigation systems had yet to really commonly apply. Since then more portable GPS systems have been equipped with more creative functions. GPS car navigation systems parts Car GPS Navigation System is made up of receiver and a map database. Some advanced systems also have drive DVD or TV to supplement when drivers want to listen to music and so on. The database map displays the street names and addresses. Some devices have are more human-oriented, it can set the specific locations, such as points of interest. Sometimes you drive to a very good service of restaurant, but it’s the first time you go there. If you want to eat at that nice restaurant next time, you can set the points of interest instead of remembering the location. Other Applications such as business Some transportation corporations use GPS navigation system within their vehicles track vehicles avoiding their employees to cheat their boss or other purposes. In many countries, taxis come equipped with a car DVD NAV, so that taxi company staff can track their cars location effectively and accurately and it can entertain passengers too. more information to share . . . .