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Smart card and method of adding water-print for interior data of smart card

A technology for internal data and smart cards, applied in the field of smart cards, it can solve the problems that ordinary digital cameras are not suitable for, and achieve the effect of highlighting substantive characteristics.

Inactive Publication Date: 2007-07-04
北京华旗数码影像技术研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of adding a watermark requires specific changes to the internal firmware of the digital camera, which is not applicable to ordinary digital cameras

Method used

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  • Smart card and method of adding water-print for interior data of smart card
  • Smart card and method of adding water-print for interior data of smart card
  • Smart card and method of adding water-print for interior data of smart card

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Experimental program
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Embodiment Construction

[0039] The first embodiment of the present invention is that the present invention is applied to a smart card of a digital camera. When image data is written into the smart card, the watermark embedding module in the smart card adds a watermark to the image data. As shown in Figure 1, smart card comprises: smart card MPU (microprocessor), memory, monitoring module and watermark embedding module, in the present embodiment, monitoring module listens to the process that digital camera writes data to smart card, when image data is sent to When the I / O operation written by the smart card occurs and a complete image is transmitted, the monitoring module will report the monitoring result to the MPU of the smart card, and the report is information for adding a watermark to the data. The MPU sends an instruction for executing image processing to the watermark embedding module, and the instruction for executing watermark embedding includes information about the storage location of the da...

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Abstract

The invention is a smart card that comprises microprocessor, memory, monitoring module which is used to monitor I / O operation of data writing-in or reading-out and data format, and returns the monitoring result to the microprocessor; said microprocessor judging whether transferring the command of executing watermark embedding according to the monitoring result; the watermark embedding module which is connected with the microprocessor gains the intact data to be written in or read out based on the command of the microprocessor, and adds the watermark information. A method of adding digital watermark for data in the smart card, the monitoring module monitors I / O operation of data writing-in or reading-out and data format, and returns the monitoring result to the microprocessor; said microprocessor judging whether transferring the command of executing watermark embedding; the watermark embedding module which is connected with the microprocessor gains the intact data to be written in or read out based on the command of the microprocessor, and adds the watermark information.

Description

【Technical field】 [0001] The invention relates to a smart card, in particular to a smart card capable of adding watermarks to internal data. 【Background technique】 [0002] With the development of science and technology, various cards have developed from simple synchronous cards to asynchronous cards, from simple EPROM cards to smart cards with built-in microprocessors (also known as CPU cards). Especially the appearance of the smart card with microprocessor inside makes people utilize its internal microprocessor chip, and also develops various operating systems that are applied to the inside of the smart card. In this way, the smart card is more convenient to use and easier to manage; more importantly, the smart card itself has taken a big step towards the direction of personal computerization, which has opened up a broader field for the development of smart cards. prospect. [0003] At the same time, as copyright is more and more valued today, digital watermarking techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/073G06T1/00
Inventor 田新刘曼杨祥辉
Owner 北京华旗数码影像技术研究院有限责任公司
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