Downloading method for chip operating system, chip operating system and intelligent card

An on-chip operating system and smart card technology, applied in the field of smart cards, can solve the problems of shrinking user area space, limited storage space, and enlargement, etc., to save space, save Flash space, and meet the needs of user area space.

Inactive Publication Date: 2014-03-26
BEIJING WATCH DATA SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the Flash space is a fixed size, that is, the storage space of the smart card is limited, the Loader area will occupy several K of space, and the space occupied by the COS area varies from time to time. Users often have certain requirements on the size of the user area space; When the amount of COS code is relatively large, the space occupied by the COS area will increase accordingly, resulting in a reduction in the space of the user area, that is, no longer meeting the user's requirements

Method used

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  • Downloading method for chip operating system, chip operating system and intelligent card
  • Downloading method for chip operating system, chip operating system and intelligent card
  • Downloading method for chip operating system, chip operating system and intelligent card

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Embodiment Construction

[0041] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] First of all, according to the principles of the Loader program and COS, it can be known that there are two types of transfer of card control rights, one is the transfer of control rights from the Loader program to the COS caused by COS download; the other is caused by the card returning to the white card status Transfer of control from COS to Loader program.

[0043] Secondly, for the Loader program, because it is used to download the COS, it will only work when the control of the card is mastered, and it is useless to the user after the COS is downloaded. For COS, it also only works when you have control of the card.

[0044] Furthermore, regardless of the ownership of the card control right, if the Loader program and CO...

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Abstract

The invention provides a downloading method for a chip operating system, the chip operating system and an intelligent card. The method comprises the following steps of: splitting the programs of the chip operating system into a main program and auxiliary programs, wherein the size of the auxiliary programs does not exceed the size of a loader region of the intelligent card; calling a loader program positioned in the loader region, and downloading the compiled main program to the chip operating system region of the intelligent card; and controlling erasure of the loader region through the main program, and downloading the compiled auxiliary programs to the loader region. The Flash space of the intelligent card can be saved, so that the requirement of a user region space is met.

Description

technical field [0001] The invention relates to the technical field of smart cards, in particular to a method for downloading an operating system in a chip, an operating system in a chip and a smart card. Background technique [0002] With the development of smart cards, people have developed various operating systems, namely COS, that are used in smart cards by using their internal microprocessor chips. The full name of COS is Chip Operating System (on-chip operating system), which is generally developed around the characteristics of the smart card it serves, that is, COS is a dedicated system rather than a general system, and a COS can generally only be used For a certain (or certain) smart cards, the COS in different cards is generally different. [0003] Traditional COS downloads usually proceed as follows: [0004] First of all, the chip is called the white card state before downloading the COS, and the card in the white card state is controlled by the Loader (loader)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/445G06K1/12
Inventor 崔毅
Owner BEIJING WATCH DATA SYST
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