Vehicle infotainment system power management interaction system and vehicle

By setting GPIO pins between the SOC and MCU, status information synchronization and active wake-up are achieved, solving the problems of slow startup speed and one-way wake-up of in-vehicle entertainment systems, and improving the startup performance and wake-up flexibility of the vehicle system.

CN116061848BActive Publication Date: 2026-05-08CHONGQING CHANGAN TECH CO LTD
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Patent Information

Application Number
CN202310000195.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-01-02
Publication Date
2026-05-08
Estimated Expiration
2043-01-02

AI Technical Summary

Technical Problem

Existing in-vehicle entertainment systems suffer from slow startup speed, one-way MCU wake-up, and incomplete data exchange between the SOC and MCU when switching between low power consumption and operating modes.

Method used

By setting up 5 GPIO pins between the SOC and MCU, the status information is synchronized, allowing the SOC to have an active wake-up function. The high and low level changes of the GPIO control the power state transition of the vehicle unit, optimizing the resource release and synchronization between the SOC and MCU.

Benefits of technology

It improves the hot start performance of the vehicle system and shortens the wake-up time from more than 16 seconds to within 5 seconds to enter working state, realizing flexible interaction between two wake-up sources.

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Abstract

The application discloses a kind of vehicle entertainment system power management interactive systems and vehicle, including SOC, MCU and screen, screen is connected with SOC, MCU respectively, the SOC has power core service module and IPO interface, the SOC is arranged with 5 GPIO feet between two chips of MCU, wherein 3 are input by SOC, and output by MCU;2 are input by MCU, and output by SOC;The characteristics of the GPIO foot are connected two end chips, one end controls input high-low level interrupt, the other end receives output, and according to the corresponding car machine power state logic of interrupt trigger, wherein car machine power state includes hibernate, half hibernate, power off and work.The SOC in the entertainment host can be synchronized state information by the high-low level change of GPIO with MCU in the application, finally reach the performance of improving hot start of car machine, and make SOC have initiative wake-up function.
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