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Flash Memory-based chip program upgrading method

A program upgrade and chip technology, applied in program control devices, program loading/starting, etc., can solve problems such as inability to user experience, take the audio back to the car factory for rewriting, etc., and achieve the effect of reducing the risk of upgrade failure and improving the experience effect.

Inactive Publication Date: 2017-06-30
合肥极友软件开发有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chip development requires a very long development process. There will be many upgraded versions from launch to perfection. Usually, chip upgrades require specific chip programming tools to erase and write the chip, but it is impossible to rewrite the chip installed on the car in actual operation. The audio will be taken back to the car factory for rewriting, so once there is a new version of the chip, it can only be used in the next generation of car audio products, and users cannot get a better experience in time

Method used

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  • Flash Memory-based chip program upgrading method

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Embodiment Construction

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0016] Such as figure 1 As shown, the present invention provides a chip program upgrade method based on FlashMemory, save the program code and provide external interface code by adding a slice of FlashMemory to the vehicle-mounted host computer, when this part of the program has an upgrade, as long as the upgraded program is compiled into With a specific format file, the program in the file can be written into FlashMemory through an external memory to achieve the p...

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PUM

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Abstract

The invention discloses a Flash Memory-based chip program upgrading method. A chip can be upgraded by adding a Flash Memory to an on-board host computer to store a program code and providing an external interface code, compiling the program to be upgraded into a specific format file when a program is upgraded, and writing the program in the file into the Flash Memory through an external memory. By applying the on-board host computer disclosed by the invention, the version of the chip can be upgraded by using a USB (Universal Serial Bus) as long as a user has an upgrading file; the best experience effect can be achieved in the first time; the chip enters an upgrading mode to stop decoding work and stop responding to an application layer, the application layer does not transmit data or requirements to the chip any longer, and then the upgrading is started, so that the risk of an upgrading failure is reduced.

Description

technical field [0001] The invention belongs to the technical field of vehicle audio-visual systems, and relates to a chip program upgrading method, in particular to a chip program upgrading method based on FlashMemory. Background technique [0002] The car head unit is the core part of the car audio-visual system. The car head unit needs to be applied to many chips, such as CD decoder chips, USB decoder chips, etc., to realize related functions. [0003] Chip development requires a very long development process. There will be many upgraded versions from launch to perfection. Usually, chip upgrades require specific chip programming tools to erase and write the chip, but it is impossible to rewrite the chip installed on the car in actual operation. The audio will be taken back to the car factory for rewriting, so once the chip has a new version, it can only be used in the next generation of car audio products, and users cannot get a better experience in time. Contents of th...

Claims

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Application Information

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IPC IPC(8): G06F9/445
Inventor 孙云梅沈洋倪新良陈普何静华
Owner 合肥极友软件开发有限公司
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