Car audio system and software upgrading method thereof

A car audio and software upgrade technology, applied in the direction of program loading/starting, program control device, memory address/allocation/relocation, etc., can solve the problems of inconvenient software upgrade, achieve low cost, simplify hardware circuit, and simple upgrade process Effect
CN101770384AInactive Publication Date: 2010-07-07SHENZHEN HANGSHENG ELECTRONICS
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SHENZHEN HANGSHENG ELECTRONICS
Publication Date
2010-07-07
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a car audio system and a software upgrading method thereof. The memory space of an MCU of the car audio system is divided into a normal application program space, a software update control program space and an updated mark space, the software upgrading control can be directly performed in the RAM and storage space in the MCU, thus simplifying hardware circuits; a public boot program is designed so that the system can enter a software upgrading mode when the updating of application program fails, thus the software upgrading system is stable; and the car audio system of the invention has the advantages of simple upgrading process and low cost.
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Description

technical field

[0001] The invention relates to the field of car audio, in particular to a software upgrade scheme in a car audio system. Background technique

[0002] With the development of in-vehicle multimedia technology, the functions of in-vehicle audio equipment are becoming more and more abundant, and the software design of audio systems is becoming more and more complex. Due to the installation characteristics of the current car audio, after the car audio is installed in the car, if the audio system software needs to be updated due to software upgrade or software maintenance, the car audio must be removed from the car, and then use a professional burning tool to complete the software update. The process is complicated, It takes a long time and the cost is high. In addition, the main control MCU (microcontroller) of the existing car audio system mostly adopts a single chip and the internal RAM (random access memory) is small. To achieve software upgrade, it is genera...

Claims

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