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IC smart card with dynamic logic sectorization and access right control function and implementing method thereof

A technology of access rights and logical partitions, which is applied to record carriers, instruments, and computer components used in machines, etc., can solve the problems that the size cannot be changed, and only application data can be downloaded, so as to save development time and cost and achieve flexible hardware The effect of the platform

Inactive Publication Date: 2005-01-19
DATANG MICROELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This division provides strong flexibility for service providers to launch new services, such as e-commerce dynamic menu downloads, value-added service over-the-air downloads, etc. However, the division of logical partitions such as data memory and program memory in this structure is completed in chip design. , its size cannot be changed, and only application data downloads can be performed

Method used

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  • IC smart card with dynamic logic sectorization and access right control function and implementing method thereof
  • IC smart card with dynamic logic sectorization and access right control function and implementing method thereof
  • IC smart card with dynamic logic sectorization and access right control function and implementing method thereof

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Embodiment Construction

[0036] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0037] Taking the INTEL 8051 compatible microprocessor as an example, the specific realization of the present invention is introduced. It will be apparent to those skilled in the art that the present invention is also applicable to other types of microprocessors.

[0038] figure 1 Shown is the block diagram of an IC smart card chip that dynamically divides multiple logical partitions in a physical memory and realizes memory access control adopted by the present invention. The IC smart card chip is composed of a microprocessor 1 and its peripheral circuit 2, and the peripheral circuit 2 includes a memory bank. 3. Memory management module 4 and serial I / O interface circuit 8 .

[0039] The IC smart card chip adopts a mixed memory structure, and the memory group 3 includes an EEPROM memory 5 , a ROM memory 6 and a RAM me...

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Abstract

This invention discloses a kind of IC smart card that with dynamic division multiple logic partition and memory access control function and its realization. The IC smart card comprises microprocessor, memory pool and serial I / O interface circuit. The memory pool adopts the mixing memory structure. The memory pool comprises programmable non-volatile memory, which can be used as dynamic division memory, and divided to several logic partitions. By adding MAR in microprocessor, it can dynamically set the size of each logic partition of programmable non-volatile memory. By adding memory administration module between microprocessor and memory pool, it can divide the programmable non-volatile memory to multiple logic partition dynamically and control the corresponding memory access authority.

Description

technical field [0001] The invention relates to the field of IC smart cards, in particular to an IC smart card capable of dynamically dividing a physical memory in the IC smart card into a plurality of logical partitions and controlling memory access authority and its realization method. Background technique [0002] In the information society, people put forward higher requirements on the security, reliability and ease of use of information carriers. IC smart card with storage, encryption and data processing capabilities provides a convenient and reliable means for modern information processing and transmission with its strict data security, wide application flexibility and powerful function scalability. [0003] Commonly used memories in IC smart card chips include random access memory (RAM), read-only memory (ROM), and programmable nonvolatile memory (EEPROM or FLASH MEMORY). RAM is generally used to store intermediate data or variables in the calculation process, and ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/07
Inventor 孙东昱龚宗跃
Owner DATANG MICROELECTRONICS TECH CO LTD
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