As urban roads become more and more complex, the proportion of on-board DVD navigation in new hands is also increasing. Nearly 40% of new car owners have the need to install on-board DVD navigation.
How do you buy a proper DVD navigation and audio system for your car?
We can start from the following points:
A, the sound quality
DVDS are used to play music, so sound quality is very important.
So, before buying a DVD, be sure to ask what "V" the front output of this DVD player is, or compare the sound quality of this machine with that of other DVD players.
If the sound quality of a DVD player is as good as that of a CD player, don't worry.
Ii. Image and DVD player matching
DVD screen has analog screen and digital hd screen two.
Analog screens are typically 240 x 240 pixels or 480 x 240 pixels, while hd screens are usually 800 x 480 pixels or higher.
In addition, a good DVD is the use of dual optical drive volume, namely DVD, CD two kinds of optical drive.
Accuracy of electronic maps
Electronic map is the basic and core part of vehicle navigation application. Professional certification and detailed data volume are the basic elements it should have. Therefore, when purchasing navigation products, the majority of car owners should first check the "origin" of electronic map.
State Bureau of surveying and mapping about the person in charge of the introduction: electronic map and car owners travel safety is closely related, some pirated electronic map wrong draw leakage draw, will bring trouble to car owners travel.
After examining the origin of electronic map, check the content quantity of electronic map even.
In addition to being highly accurate, professional and detailed electronic maps of navigation can also provide maps of national road networks and detailed maps of major cities.
Iv. Product performance
As GPS vehicle navigation products are applied to cars, they are required to be able to adapt to the harsh environment of cars in terms of technology and quality, and have characteristics such as earthquake resistance and high temperature resistance.
At present, vehicle navigation products are used to store electronic maps and other relevant data information of the mainstream media, mainly SD card and CD.
In the process of driving, due to the influence of external factors such as road conditions, the CD is easy to scratch, resulting in the map information can not be read accurately;
SD card as the medium of navigation products with card slot design, high stability, so the seismic performance is good, in a relatively bad automotive environment, can guarantee the safety of electronic map data, so more users recognized.
In terms of media selection, car owners can choose according to their own needs. If they often drive in the environment with poor road conditions, it is suggested that car owners choose the on-board navigation products with SD CARDS.