Radio frequency identification tag access method based on bitmap and device

Abstract

The invention discloses a radio frequency identification tag access method based on a bitmap, which comprises the following steps: receiving a tag access command, wherein the type of an application is designated in the tag access command; obtaining the bitmap which corresponds to the type of the application in the tag access command, wherein the bitmap is related with a memory area of a radio frequency tag; and judging whether the tag access command has access authority of the corresponding memory area or not according to the obtained bitmap, if so, implementing the tag access command, if not, stopping implementing the tag access command. The invention further discloses a radio frequency identification tag access device based on the bitmap. The radio frequency identification tag access method and the device can set the access authority according to different applications, thereby realizing that the different applications can only access the memory areas stipulated in the radio frequency tag, avoiding modifying the memory areas outside the application range and further ensuring the safety of tag access.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a Bitmap (bitmap)-based RFID (Radio Frequency Identification, radio frequency identification) tag access method and device. Background technique [0002] RFID technology is a non-contact automatic identification technology. Compared with traditional barcodes, magnetic cards and IC cards, the RFID system does not require manual intervention, and has the advantages of fast reading speed, non-contact, no wear, no environmental influence, and long life. , Easy to use features, so it has been widely used. [0003] The most basic RFID system includes a reader (or reader) and a tag (also known as a radio frequency card), which uses radio frequency to perform non-contact two-way data transmission between the reader and the tag to achieve target identification and data exchange. Purpose. The basic workflow of the RFID system is: the reader sends a certain frequenc...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a Bitmap-based RFID tag access method and device, which can solve the problem of restricted access to different memory areas of the same tag by different applications, thereby ensuring the security of tag access

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