Dual-screen interaction system and dual-screen interaction method of vehicle-mounted instrument screen and central control entertainment screen

Abstract

The invention discloses a dual-screen interaction system and dual-screen interaction method of a vehicle-mounted instrument screen and a central control entertainment screen. The method comprises thefollowing steps that when a central control entertainment system needs to display self image data on the vehicle-mounted instrument screen of a vehicle-mounted instrument system, a vehicle-mounted processor sends a corresponding interaction instruction to the vehicle-mounted instrument system and the central control entertainment system; the central control entertainment system acquires a preset display resolution of the vehicle-mounted instrument system based on the interaction instruction, and allocates a shared frame buffer data <buffer> of a corresponding size based on the display resolution, and each frame of image data to be displayed on the vehicle-mounted instrument screen of the vehicle-mounted instrument system is written into the shared frame buffer data <buffer>; and the vehicle-mounted instrument system is used for acquiring an address and image data of each frame of the image data in the shared frame buffer data <buffer> after receiving the interaction instruction, calling a bottom layer drive, performing image synthesis based on the image data, and displaying the last synthesized image on the vehicle-mounted instrument screen through a hardware LCD controller of thevehicle-mounted processor.

Description

technical field [0001] The invention relates to the field of vehicle-mounted dual-screen data interaction, in particular to a dual-screen interactive system and method for a vehicle-mounted instrument screen and a central control entertainment screen. Background technique [0002] Due to the rapid development of automotive electronics, the performance of vehicle-specific processors is constantly improving, chip manufacturing processes are becoming more and more advanced, integration is getting higher and higher, and power consumption is getting lower and lower. Vehicle cockpit electronic controllers are increasingly developing towards the concept of domain controllers. Head-up displays, full LCD vehicle instrument panels, and system central control entertainment screens are no longer separate entities, but are interconnected as a whole. This requires vehicle Data interaction and display image fusion can be performed between the instrument system and the central control enter...

AI Technical Summary

Problems solved by technology

[0004] The two sets of hardware systems (LCD instrument and central control entertainment system) use LVDS or USB communication mode to transmit video information. The two systems are almost implemented by the same hardware, which makes the circuit design complicated and the inter-system It will cause interference and bring EMC problems. At the same time, it will also make the structure complex, increase power consumption and increase cost (requires two sets of the same hardware system), the system is not scalable, and the interaction is not flexible.

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