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Method for upgrading operation system for memory card

An on-chip operating system and operating system technology, the application restores the default operating system domain when the upgrade fails, which can solve the problems of inability to change functions and performance, waste of resources, etc., and achieve the effect of increasing user rights and ensuring security

Inactive Publication Date: 2007-12-12
CHINA POTEVIO INFORMATION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, after the memory card is issued, its function and performance cannot be changed by the user, resulting in a waste of resources

Method used

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  • Method for upgrading operation system for memory card
  • Method for upgrading operation system for memory card

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Embodiment Construction

[0023] The specific implementation process of the present invention will be further described below in conjunction with the accompanying drawings:

[0024] 1. design concept of the present invention

[0025] (1) The on-chip operating system code of the memory card of the present invention is not stored in the internal ROM (read-only memory), but stored in the erasable storage space FLASH. The erasable storage space reserves a part of the space for the on-chip operating system code (the other part is used for the storage space of the general memory card), which is invisible to the outside. The code area is divided into two parts, COS1 and COS2 respectively, the first area stores the default COS (operating system on chip) code COS1 when leaving the factory, for backup and cannot be changed; the second area stores the COS (operating system on chip) currently executed by the memory card Code COS2. A schematic diagram of memory card storage space allocation according to the prese...

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Abstract

The invention relates to memory card operation system updating method that sets a code area on the removable memory into two parts, with one being the default operation system code, the other the current operation system code with marks on them. On the ROM start up code, inner core order of the operation system is loaded based on the marking status to load the operation system for different areas. Add operation system updating order CMD57, writes the update system file to the operation system code of two areas, and add order CMD58. When the update file is transmitted or making a mistake in transmission, the terminal will send CMD58 order to the memory card and write the marking position. It expands the feature of the memory card with intensified safety of it.

Description

technical field [0001] The invention relates to an operating system on a memory card, in particular to a method for upgrading the operating system on the memory card, and further relates to a method for restoring the default operating system when the upgrade fails. Background technique [0002] In the new generation of mobile memory cards, the memory card not only has the basic storage function but also has some other auxiliary functions. It is a multi-functional memory card. COS (Chip Operating System, on-chip operating system) is the basis for realizing card security and multi-function cards. [0003] After upgrading the operating system on the memory card, many functions can be expanded, and different operating systems on the memory card can be designed for different industries to meet the needs of different industries, and truly realize one card with multiple functions. [0004] At present, there are related papers supporting COS (Operating System on Chip) upgrade in sm...

Claims

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Application Information

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IPC IPC(8): G06F9/445
Inventor 张志霞彭诚
Owner CHINA POTEVIO INFORMATION IND
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