In automotive electronics applications, many protocols such as CAN, LIN, MOST, and Bluetooth, transmission systems, chassis, security systems, instrument panels, etc. are used. Car audio and car navigation are also important.
Car infotainment system trends
The traditional car audio includes Tuner, radio, and CD player functions. As people's needs increase, they may add the functions of USB devices, Bluetooth and other devices. Slowly people find that just "listening" is not enough. Video, camera function, and then need navigation function. Among these, as shown in Figure 1, the annual growth rate of car color TFT display audio and car multimedia audio is the highest.
Figure 1 Trend of in-vehicle infotainment systems
Multimedia functions are being enhanced every year, as shown in Figure 2. For multimedia functions, the first is only CD playback or support USB or SD card, etc., slowly with the popularity of iPod, need to support iPod functions and iPod Bluetooth functions, including USB3.0. The display of color TFT from WQVGA to VGA, to the display of RD and finally connected display with Smart Phone, it is not difficult to find that the function will be more and more strengthened.
The vehicle multimedia audio system module is shown in Figure 3, which is composed of a Tuner controlled by a main control MCU, a CD DSP server USB module and iPod functions.
Figure 2 Functions of in-vehicle infotainment system
Figure 3 multimedia audio function module
Here, the multimedia audio functions are AM / FM; CD, USB, SD, iPod, Bluetooth; MP3, WMA, AAC; Character Display.
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