Object processing method and device of Java card and Java card

The technology of a processing method and a processing device, which is applied in the field of Java cards, can solve problems such as slow search speed and reduce the running speed of Java cards, and achieve the effects of saving occupied space, simplifying the object processing process, and improving speed

Inactive Publication Date: 2014-05-07
GOLDPAC GRP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Find the actual physical address corresponding to the object through the object table. The search speed is affected by the number of objects in the object table. The more objects recorded in the object table, the slower the search speed, thus reducing the running speed of the Java card;

Method used

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  • Object processing method and device of Java card and Java card
  • Object processing method and device of Java card and Java card
  • Object processing method and device of Java card and Java card

Examples

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Embodiment Construction

[0058] In order to make those skilled in the art better understand the technical solution of the present invention, the Java Card object processing method, device and Java Card provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0059] figure 1 A flow chart of an object processing method of a Java card provided by Embodiment 1 of the present invention, such as figure 1 As shown, the method includes:

[0060] Step 101: Generate a space-relative address of the storage space according to the size of the pre-generated space management unit and the space reference address of the storage space corresponding to the object.

[0061] In this embodiment, step 101 may specifically include: multiplying the space reference address by the size of the space management unit to obtain the space relative address.

[0062] Step 102: Generate an actual physical address of the storage space according to the relative address of the ...

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PUM

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Abstract

The invention discloses an object processing method and device of a Java card, and the Java card. The method comprises the following steps: generating the space relative address of a storage space according to the size of a space management unit generated in advance and the space quote address of the storage space, which corresponds to an object; generating the actual physical address of the storage space according to the space relative address and the space start address of a storage area where the storage space is positioned; accessing the object according to the actual physical address. In the process of obtaining the actual physical address, an object list is not required to be looked up, so that the object processing process is simplified, the object processing speed is increased, thereby increasing the operation speed of the Java card greatly; as the object list is not required to be set up, the space occupied by the object list in the Java card is saved, thereby expanding the available space in the Java card.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a Java card object processing method, device and Java card. Background technique [0002] Java Card (Java Card) technology allows programs written in the Java language to run on smart cards and other small and resource-constrained devices. Developers can use standard software development tools and environments to build and test programs, and then convert those programs into a format that can be installed on Java Card technology-enabled devices. [0003] When a Java program runs on a Java card, various objects are created to store data, and the created objects need to be frequently accessed. According to the relevant specifications, the Java program in the Java card needs to rely on the 2-byte "reference" to access an object. The Java card should use a certain algorithm to find the physical address of the object corresponding to the reference through a certain algorithm, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/02
Inventor 杨宁刘金鹏
Owner GOLDPAC GRP LTD
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