With the development of the automotive industry, the complexity and information density of automotive information systems are increasing. The display is no longer just a basic centralized instrument display, but to meet the needs of more and more detailed and diverse information display in the car. The car display system has evolved from traditional pure audio, such as MP3 and CD, to a comprehensive display system integrating GPS navigation and audio-visual entertainment. The displayed content usually includes: GPS map information, DVD playback, digital radio and television and reversing screen. For so many display information, usually need to be equipped with multiple displays, or use a video switch to switch between different signals, these methods undoubtedly need to increase the cost, increase the complexity of the operation, and can only get one display at a time information.
Picture-in-picture (PIP, pictureinpicture) technology originated in the 1980s and is mainly used in televisions, where users can watch multiple programs simultaneously. The picture-in-picture sub-picture is adjustable in position, and can be enlarged, reduced, or still displayed; the content of the main sub-picture can also be exchanged. With these functions, people can watch other channel programs or monitor other channel programs at the corner of the screen when watching a TV program Indoor and outdoor safety; and can use the sub-picture function to appreciate certain decomposition actions.
In this paper, the use of picture-in-picture technology to achieve simultaneous display of multiple pictures in a special vehicle environment can better solve these problems.
Experimental results
According to the development trend of in-vehicle entertainment system, according to the characteristics of its multi-signal source, a scheme for realizing multi-screen simultaneous display using PIP function is designed. Figures 7 and 8 are the display effects of this solution. The screen resolution is 800 & TImes; 480, and the interface is 18-bit DigitalRGB. The experimental results show that the user can conveniently control the picture-in-picture display of the two signals, and at the same time realize the display of POP (Pictureonpicture). The position and size of the sub-screen can be adjusted through the osd menu, and the main screen and the sub-screen can be interchanged to achieve a good display effect, which is very suitable for car entertainment systems.
Application of Picture-in-Picture Technology in Car Entertainment System
Application of Picture-in-Picture Technology in Car Entertainment System
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Grandwatt Electric Corp. , https://www.grandwattelectric.com