Software upgrading method for full liquid crystal instrument

A liquid crystal instrument and software upgrade technology, applied in software engineering design, software maintenance/management, instruments, etc., can solve the problems of time-consuming, easy frame loss, etc., and achieve the effect of not easy frame loss, improved update speed, and small data volume

Pending Publication Date: 2021-06-18
常州新途软件有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in order to solve the problems of long time consumption and easy frame loss in the upgrading scheme of the full liquid crystal instrument in the prior art, the present invention provides a method for upgrading the software of the full liquid crystal instrument to solve the above problems

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  • Software upgrading method for full liquid crystal instrument

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Embodiment Construction

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0019] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description,...

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Abstract

The invention provides a full liquid crystal instrument software upgrading method, and the method comprises the following steps: comparing an original file with a new version file by external equipment, selecting a plurality of same sub-character strings simultaneously existing in the original file and the new version file, and describing the sub-character strings by using homogeneous information; screening out difference sub-strings in the new version file through the homogeneous information; writing the difference sub-character strings and the homogeneous information into a patch file diff.A-B; carrying out the MD5 calculation on the patch file diff.A-B, and storing a calculation result in a file diff.MD5; packaging and compressing the patch file diff.A-B and the file diff.MD5, and obtaining a file diff.pkg. According to the full liquid crystal instrument software upgrading method, the whole updating file does not need to be transmitted to the instrument, only different data needs to be transmitted to the instrument, the transmitted data volume is small, the updating speed is increased, the situation of frame loss is not prone to occurring, and the updating success rate is high.

Description

technical field [0001] The invention relates to the technical field of automobile instrument software, in particular to a method for upgrading the software of a full liquid crystal instrument. Background technique [0002] After the car is mass-produced, if there is a problem, the instrument software needs to be updated. In the past, most of the automotive instruments were mechanical instruments, and the data volume of the software program was relatively small, so the traditional upgrade method was to connect the computer to the OBD port of the vehicle and upgrade through the CAN bus. Since the rate of the CAN bus itself is at the KB level, it is only suitable for the transmission of some small files. Now the full LCD instrument needs to transmit files with a large amount of data when upgrading the software. Using the traditional transmission method, the data transmission time will be longer. very long. Due to the long transmission time, the risk of frame loss will increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F8/658G06F8/71
CPCG06F8/71G06F8/658
Inventor 蒋楠张华
Owner 常州新途软件有限公司
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