AVNIS product, a derivative of automobile audio-visual navigation information system, has experienced three times in history:
The first generation products are in the era of full analog technology, and all products adopt analog circuit design. Their typical functions are the functions of radio and tape drive, without any display.
The second generation products are in the era of semi-analog and semi-digital. Some products use analog circuits, and some begin to use digital circuits. Their typical functions are radio and CD, and digital tube and segmented LCD display mode begin to appear.
The third generation products are in the all-digital era, and all products are designed with digital circuits. Their typical functions are radio, DVD multimedia and GPS satellite navigation, and the display adopts color TFT.
It can be said that the year of 20 1 1 is the year when AVNIS products developed to the network. At present, a brand-new fourth-generation AVNIS system has been developed. From its typical functions, it is developing towards networking, such as radio, DVD multimedia, satellite navigation, mobile digital TV, high-speed network connection and so on. The launch of the fourth generation AVNIS system indicates that the automotive multimedia system is about to enter the digital network era.