Method for realizing multi-task access smart card

A smart card and multi-tasking technology, applied in the direction of cooperative devices, instruments, induction record carriers, etc., can solve problems such as confusion, threats to system stability and reliability, and achieve the goal of solving mutual interference and improving stability and reliability Effect

Inactive Publication Date: 2007-08-22
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the smart card and the card reader communicate through a serial channel. When multitasking accesses the smart card at the same time, it is easy to cause confusion and threaten the stability and reliability of the system.

Method used

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  • Method for realizing multi-task access smart card
  • Method for realizing multi-task access smart card

Examples

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Embodiment Construction

[0021] The method of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Create a message queue, the elements in the queue include the type of operation request and the content of the operation request. There are two types of operation requests, namely Reset Request and IO Request. If it is a reset request, the request content is empty; if it is a read-write request, the request content is the instructions and parameters used in subsequent interactions. Encapsulate all the operations interacting with the smart card in a daemon process, and the user program sends operation requests to the daemon process by means of message interaction, and accesses the smart card indirectly. The daemon process acts as an intermediate bridge: on the one hand, it listens to the operation request message from the user program and inserts it into the message queue; on the other hand, it obtains the operation request...

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Abstract

This invention discloses a method for accessing intelligent card by multitask, which hands all operations interacted with the intelligent card over a guardship process and the user process sends operation request to the guardship process in a message interaction mode to access the intelligent card indirectly, and the guardship process monitors the operation request information from the user process and plugs it into the message queue on one hand, and obtains operation request information from the message queue on the other used in the interaction with the intelligent card and transmits the final result to the related user process, in which, the operation request includes a reset request and a read-write request, which processes messages one by one deponding on the guardship process to guarantee that every message is processed without interference.

Description

technical field [0001] The present invention relates to the application technology of the smart card in the field of communication, especially the application of the smart card in the digital rights management (Digital Right Management) design scheme. Card) method. Background technique [0002] In recent years, the rapid development of network technology and multimedia technology has provided a new channel for the rapid dissemination of large-capacity media content. Followed by unprecedented challenges and threats to media security and digital rights, digital rights management technology emerged in the chaos to effectively protect the copyright of digital content, technically prevent the illegal copying of digital content, or in To a certain extent, the technical and cost thresholds for replication are raised. [0003] In the scheme design of digital rights management, if the smart card is introduced, the performance of the system will be significantly improved, and it wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/00G06K17/00
Inventor 方世煌
Owner ZTE CORP
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