32-bit systems based on multimedia car navigation system

The design of our system, the driver needs to support two different display modes.

4.3.1. Digital screen driver

Digital interface LCD screen driver, often we are the main chip used by ITU-RBT.656 directly or other proprietary protocol driver interface to achieve, no other interface chip to handle.

4.3.2. Simulation screen driver

The analog LCD screen driver, we need to

To the main chip ITU-RBT.656 output, through a special driver chip processing, to achieve the drive.

4.3.3.LCD screen resolution

At present, the main applications in the automotive center, or 7-inch LCD screen, 6.2,6.5, most of the resolution is 480 × 234, there are a few resolution is 640 × 480.

4.3-inch display with a resolution of the mainstream 480 × 272. More small size such as 2.5 to 3.5 inch 320 × 240 display most of the.

4.3.4. Touch screen

And the LCD in real time 32, the touch screen is a standard configuration.

In accordance with the requirements of navigation, text input, the majority of the need for handwriting recognition, but because of the special nature of the automotive environment, we need to support on-screen handwriting input, and when, what speed allows the input, but also involves legal and regulatory issues; At the same time, from the ergonomic point of view, where we set the tablet, in what way access, also need to continue to study and practice.

4.4. Ergonomic design of the overall interface

4.4.1. Keys, remote control and jog

Button is always the electronics necessary input device that has touch-screen design, we only retain some basic keys, such as switch machine, a disc, or some direct switching function keys, the other should be as much as possible on the touch screen, through flexible The display prompts to be achieved.

Although the automotive environment, small, easy to rear passengers, we also design remote control.

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