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Method for preventing from illegal duplication of PDA mobile communication terminal

A technology of mobile communication and illegal duplication, which is applied in the following fields of preventing illegal duplication of PDA-type mobile communication terminals, to achieve the effects of reducing usage, low cost, and preventing modulation

Inactive Publication Date: 2008-06-04
LEJIN ELECTRONICS KUNSHAN COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it is composed of two processors (for example: MSM processor 100 for terminal, processor 200 for PDA), ESN information is only available on the MSM side

Method used

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  • Method for preventing from illegal duplication of PDA mobile communication terminal
  • Method for preventing from illegal duplication of PDA mobile communication terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. First, reference numerals are added to constituent elements in each drawing, and attention must be paid to the fact that the same parts are indicated by the same reference numerals in different drawings.

[0021] Meanwhile, the content described below is only provided for a more comprehensive understanding of the present invention. It is well understood by those having ordinary knowledge in the art that the present invention can be embodied without these matters. Meanwhile, on the premise of not affecting the gist of the present invention, well-known contents and configurations will not be described in detail.

[0022] As mentioned above, ESN is the inherent serial number (4 bytes) of mobile communication terminal, generally speaking, in existing PDA phone, only store ESN in the flash memory (not shown in the figure) of MSM processor.

[0023] ...

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PUM

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Abstract

The invention relates to a mobile communication terminal of the PDA type, in particular to a method for preventing the ESN modulation so as to lower the use of the illegal duplication telephone and preventing the illegal duplication of the mobile communication terminal of the PDA type. The invention comprises the following four steps that: the operation transformation is applied to an MSM processor by using the ESN, namely ESN<ORG> and the ESN thereof in a certain mode and a series of numbers ESN<NOT> obtained from the operation are stored in the processor for PDA; when the ESN, namely ESN<ORG>, needs to be modified, the comparative calculation is applied to the ESN and a series of numbers ESN<NOT> already stored in the processor for PDA needing to be modified in a certain mode; a judgment of whether the result of the comparative calculation is the needed certain value is made; if the result of the comparative calculation is not the needed special value, then the modification of the new ESN number is stopped.

Description

technical field [0001] The present invention relates to the method for preventing illegal duplication of PDA type mobile communication terminal, particularly relates to the method for preventing illegal duplication of PDA type mobile communication terminal: In PDA type mobile communication terminal (PDA phone), by preventing ESN (Electrical Serial Number) modulation, which can reduce the use of illegally copied calls. Background technique [0002] Recently, not only a personal digital assistant (PDA: personal digital assistant) having both functions of a small computer and a communication function has been developed, but also a mobile communication terminal having both a communication function and a function of a small computer. [0003] Among the products developed are PDA-type mobile communication terminals (PDA phones) that have both the functions of a personal portable information terminal (PDA) and a mobile communication terminal. [0004] In particular, PDA phones can...

Claims

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Application Information

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IPC IPC(8): H04Q7/32H04Q7/34H04Q7/38H04M11/06H04L9/00G06F17/00G06F21/00G06F21/73H04M1/665
Inventor 赵炯珠
Owner LEJIN ELECTRONICS KUNSHAN COMPUTER CO LTD