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Displaying a forgery-proof identity indicator

An indicator and simultaneous display technology, applied to static indicators, cathode ray tube indicators, digital output to display devices, etc., can solve the problems of complex memory unit management and limited possibilities

Active Publication Date: 2016-02-17
DEUTSCHE TELEKOM AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this particular memory cell management is complex and has limited possibilities

Method used

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  • Displaying a forgery-proof identity indicator
  • Displaying a forgery-proof identity indicator
  • Displaying a forgery-proof identity indicator

Examples

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Embodiment Construction

[0049] figure 2 A flow chart of the method of the present invention is shown. In a first step, the application (client) writes or draws the information to be displayed on the screen into an appropriate memory unit (buffer; frame buffer). The memory unit is preferably a memory unit of a graphics circuit. In addition, not only the first client (client1) but also the second client (client2) can also write the information to be displayed on the screen into the memory unit (buffer) (such as image 3 shown). However, the invention is not limited to two applications, so preferably N applications (of which) can write / draw in the buffer. The area written by the respective application / client is also referred to below as client buffer. For example, Figure 4 Two different client buffers 101 and 102 in the memory unit 100 are shown, which are stored at different locations in the memory unit 100 (framebuffer client1, framebuffer client2).

[0050] In a second step, the framebuffer ma...

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PUM

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Abstract

The invention relates to a method for displaying a forgery-proof identity indicator (31) on a screen (30) using a display controller (20) of a graphics circuit. The display controller displays the contents of a memory unit (100) of the graphics circuit on the screen (30). A graphic (32) to be displayed on the screen (30) is first written into a client-specific region (22) of the memory unit (100) of the graphics circuit by means of a client application (11, 12,...,N). An identity indicator (31) belonging to the client application (11, 12,...,N) is then written into a memory unit region (21) outside of the client-specific region (22). The client-specific region (22) of the memory unit of the graphics circuit is subsequently displayed on the screen (32, 30) using the display controller (20). At the same time, the corresponding identity indicator (31) from the memory unit region (21) outside of the client-specific region (22) is displayed on the screen (31, 30) using an overlay functionality of the display controller (20).

Description

[0001] The invention relates to a method for displaying an anti-counterfeit or secure identity indicator. In particular, the present invention relates to displaying anti-counterfeiting identity indicators using a hardware-implemented framebuffer overlay. For example, in accordance with the present invention, the display of an anti-counterfeit-type indicator for an application's identity may be provided by using the overlay functionality of the display controller. Background technique [0002] When multiple applications share a display, it may happen that one application masquerades as another in order for the user to reveal confidential information, such as a personal identification number (PIN) or security password. This method of attack is known as "phishing". An anti-forgery or non-forgery-type identity indicator can alleviate or solve the above-mentioned problems by "displaying to the user any time the user actually views the application on the screen". The user can thus...

Claims

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Application Information

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IPC IPC(8): G09G5/36G06F21/57G09G5/14G06F3/14G09G5/397G06F21/52
CPCG06F3/14G06F21/57G09G5/14G09G5/36G09G5/397G09G2340/12G09G2358/00H04N5/44504H04N21/42653H04N21/4753G06F21/64G09G5/39G06T1/60G09G5/363G09G2360/18
Inventor J·达尼瑟夫斯基斯
Owner DEUTSCHE TELEKOM AG
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