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Management information adding method and image forming apparatus

A technology for managing information and images, applied in image communication, electrography, optics, etc., can solve the problem of long-term detection

Inactive Publication Date: 2007-08-29
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the specific image information embedded in the image data is often printed randomly and given as hidden information, and in addition to the image processing and information analysis, it takes a long time for self-detection.

Method used

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  • Management information adding method and image forming apparatus
  • Management information adding method and image forming apparatus
  • Management information adding method and image forming apparatus

Examples

Experimental program
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Embodiment Construction

[0017] Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an example of an image forming apparatus (digital multifunction peripheral) to which the method of providing management information of the present invention is applied. The digital multi-function peripheral 1 is connected to a plurality of personal computers (PCs) 5 via a communication network N1 such as an in-house LAN, and can exchange information with the PCs 5 . Furthermore, it is also connected to a wide-area communication network N2 such as the Internet, and transmits and receives information to and from an external facsimile device 2 or an external PC3. Furthermore, it is possible to communicate with other facsimile devices 4 via the telephone line network N3.

[0018] The digital multifunction peripheral 1 has multiple functions as, for example, a copying device, a printing device, a facsimile device, and a scanning device. Furthermore, the ...

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PUM

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Abstract

A management information adding method are provided that when one piece of specific image information is detected, can detect from the specific image information the position or direction in which other specific image information is arranged and can improve the detecting speed of the specific image information as a whole. In adding the management information of a recorded image on the recorded image, the management information is formed by one or more pieces of specific image information and the specific image information is designed to have a shape indicating the position or direction in which other specific image information is arranged. A shape having a straight-line or angular element can be used as the shape of the specific image information indicating the position or direction of other specific image information. One piece of management information may be formed by combining plural pieces of specific image information.

Description

technical field [0001] The present invention relates to a method and an image forming apparatus for adding management information on image data to image data of a document. Background technique [0002] In order to prevent a document composed of image data from being illegally copied, an image of a specific pattern such as shading is added to or synthesized on the document (hereinafter referred to as specific image information). This specific image information is also called copy prohibition information, copy prevention information, or the like. In addition, management can be performed by embedding various management information such as creation date, creator, and expiration date in advance as hidden information in the image data of the document. [0003] The above-mentioned specific image information may be added to a document in a state that cannot be recognized by the user, or may be added in a state that the user can sufficiently recognize the specific image information...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G21/04G03G21/00
CPCH04N2201/327H04N2201/3233H04N1/32144H04N1/32352H04N1/00846
Inventor 嶋泽耀一中井嘉之
Owner SHARP KK