Character code interchanging and font protecting method

A character encoding and coding technology, which is applied in the fields of electronic digital data processing, instruments, computer security devices, etc., can solve the problems of restricting the development of e-books and affecting the convenience of file circulation.

Inactive Publication Date: 2012-10-10
叶原宏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. It must be played on a designated computer or player
[0006] 2. It must be played before a specific date
[0012] However, in the implementation of the above-mentioned various DRM schemes, it is inevitable that the cost of the required software and hardware must be transferred to the user, which not only causes the user's economic burden, but also affects the convenience of file circulation to a certain extent. Restricts the dev

Method used

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  • Character code interchanging and font protecting method
  • Character code interchanging and font protecting method

Examples

Experimental program
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Embodiment Construction

[0035] Please refer to figure 1 As shown, it can be clearly seen that the new document file generation process of the present invention includes in sequence: a step of "reading in the original document file" P11, a step of "carrying out character and word frequency statistics for the words in the original document file" P12 Steps, a step of "selecting at least some characters from the characters that appear in the original document file" P13 step, a step of "changing the encoding content of the selected characters to form a new document file" P14 step, a "according to the above new Change content of character code, write original character into the font position of the character after exchange, to produce a new font file" P15 step; Wherein said " read into original document file " P11 step is to be read into desired by operating system The original document file to read, the original document file can be one of the non-image file types such as pdf, html, xml, epub, txt or word...

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PUM

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Abstract

The invention discloses a character code interchanging and font protecting method, including a new document generation procedure and a reading procedure; wherein the new document generation procedure at least successively includes the following steps of reading in original documents, selecting part of fonts from the fonts in the original documents, changing the encoding content of the selected fonts to form the new document, writing the original fonts in the font position of the interchanged character based on the changed content of the new character encode to generate a new font document; and the reading procedure successively includes the following steps of reading in the new document, reading in a new font document, displaying the new document content based on the corresponding relation of the new font document; the function of restricting illegal reading and transmission can be achieved through the cooperation of the two procedures.

Description

technical field [0001] The invention relates to a character code exchange and font protection method, especially a protection mechanism that can effectively prevent the reading function of illegally copied document files and reduce the cost of legal use. Background technique [0002] With the advancement of technology, various digital (Digital) reading (browsing) devices (such as: tablet computers, mobile phones, notebook computers, etc.) are constantly being introduced, causing e-books to gradually become a reading medium; however , compared with the traditional reading media with a fixed form (paper), it will produce differences in content and quality when performing various analog reproductions (copying, photocopying), while e-books applied to digital reading (browsing) devices are As a digital media file, its content and quality will not be affected no matter how many copies (copies) of the digitally existing e-book file. Along with the popularization of personal compute...

Claims

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Application Information

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IPC IPC(8): G06F21/24G06F40/00
Inventor 叶原宏
Owner 叶原宏
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