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Method for programming image data to external Flash through CAN bus

A CAN bus, image data technology, applied in electrical digital data processing, special data processing applications, digital data information retrieval, etc., can solve the problems of complex programming process, long programming time, etc., to shorten transmission time, shorten programming The effect of writing time

Inactive Publication Date: 2020-03-27
AEROSPACE HI TECH HLDG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is to solve the problems of the existing image data programming method, the programming process is complicated, and the programming takes a long time. The present invention provides a method for programming image data to an external Flash through the CAN bus

Method used

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Embodiment Construction

[0024] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0026] The image data described in this embodiment is programmed to the method for external Flash by CAN bus, and this method comprises following process;

[0027] Step 1. Utilize the general data dictionary in the host computer to compress the original image data file to form a compressed file, and send the compressed file to the processor of the automobile instr...

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Abstract

The invention discloses a method for programming image data to an external Flash through a CAN bus, and relates to a programming method of the image data. The problems that an existing image data programming method is complex in programming process and long in programming time consumption are solved. The programming method mainly comprises two aspects: on one hand, an original image data file is compressed by continuously updating a general data dictionary in an upper computer to obtain a large compression ratio; on the other hand, the general data dictionary in the processor of the automobileinstrument is continuously updated, the compressed file is rapidly decompressed, and programming of original image data is achieved after decompression is completed. The method is mainly used for programming the image data.

Description

technical field [0001] The invention relates to a programming method of image data. Background technique [0002] The image displayed on the existing automobile instrument is generally to retrieve the image data from Flash, and display the image on the automobile instrument according to the image data retrieved. However, the image data needs to be programmed into the Flash in the early stage, for example: The image data file is 55M in size, and it is used for boot programming. The full name of boot in English is BootLoader. The Chinese translation for the embedded system loading program takes about 3 hours, and the programming time of this programming method is long. If it is not programmed through boot, the car instrument needs to be removed before the image data can be programmed into Flash, which is inconvenient to carry out on the car; [0003] In the prior art, the image data is firstly compressed by existing compression means, and the compressed file is decompressed b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/10G06F8/61G06F16/174
CPCG06F8/63G06F13/102G06F16/1744
Inventor 张志远邹仁杰魏丽娜邓春云
Owner AEROSPACE HI TECH HLDG GROUP
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