Device and method to support the operating of the display of image data

Abstract

For supporting correct and reliable operating displaying image data, wherein the image data may change over the time, the present invention suggests a reliable process, by use of which a secured image is generated based on a source image by generating at least one secured image part, wherein the secured image part is generated by combining a source image part of the source image with a corresponding secure pattern; and/or by monitoring displaying the secured image by detecting the corresponding secure pattern of the secured image part and by performing at least one of following: updating the detected secure pattern, checking the currentness or correctness of the detected secure pattern.

1 . A device arranged for supporting displaying image data, in form a data stream wherein the image data may change over the time, said device comprising:
 an image generating device, comprising a secured image generator configured to:   generate a secured image based on a source image by generating at least one secured image part, wherein the secured image part is generated by combining a source image partof the source image with a corresponding secure pattern generated by the secured image generate; and   a monitor device for monitor displaying the secured image by detecting the corresponding secure pattern of the secured image part and by performing at least one of following: updating the detected secure pattern by changing the data comprised in the secured pattern, checking the currentness of the detected secure pattern by checking whether the detected secured pattern corresponds to the last updated secured pattern.   
     
     
         2 . The device according to  claim 1 , wherein the device is configured to generate the secured image by dividing the source image into a plurality of source image parts and by adding the corresponding secure pattern to at least one of the divided source image parts. 
     
     
         3 . The device according to  claim 1 , wherein the corresponding secure pattern comprises at least one of the following:
 information allowing identification of currentness of the secured image part;   information allowing synchronization of the secured image part;   information allowing determining a source of the secured image part;   position information of the secured image part,   information allowing detecting the secure pattern of the secured image part;   information indicating content of the secured image part when displayed.   
     
     
         4 . The device according to  claim 3 , wherein:
 the information allowing identification of currentness of the secured image part comprises at least one of following: a time information, a sequence counter;   the information allowing synchronization of the secured image part comprises at least one of following: a sync signal, a start sequence, a checksum signal, an end sequence;   the information allowing determining the source of the secured image part comprises a source identifier;   the position information of the secured image part comprises at least one of following: a unique index of the image part, a position of the image part in the image; and/or   the information indicating the content of the secured image part when displayed comprises at least one of the following: a hash of the displayed data of the secured image part, a checksum of the displayed data of the secured image part, a hash of the displayed pixel values of the secured image part, a checksum of the displayed pixel values of the secured image part.   
     
     
         5 . The device according to  claim 1 , wherein the device is configured to generate the secured image by encoding the corresponding secure pattern, wherein the encoding of the corresponding secure pattern may comprise encoding the corresponding secure pattern in at least one of least significant bits of the source image part and/or encoding the corresponding secure pattern in at least one of most significant hits of the source image part. 
     
     
         6 . The device according to  claim 1 , wherein the device is configured to generate the secured image by performing redundant encoding of the corresponding secure pattern. 
     
     
         7 . The device according to  claim 1 , wherein the device is configured to detect the corresponding secure pattern by scanning at least one certain row, at least one certain column and/or at least one certain tile of the secured image for an information indicating a possible presence of a secure pattern. 
     
     
         8 . The device according to  claim 1 , wherein the device is configured to store the corresponding secure pattern of the secured image part. 
     
     
         9 . The device according to  claim 1 , wherein the device is configured to store the updated secure pattern of the secured image part. 
     
     
         10 . The device according to  claim 1 , wherein the device is configured to check the currentness of the detected secure pattern by comparing the detected secure pattern with an expected current secure pattern. 
     
     
         11 . The device according to  claim 10 , wherein, if the checked secure pattern is not the expected current secure pattern, the device is configured to perform at least one of following: indicate that the secured image is not a current secured image, exit the displaying of the secured image, restart the displaying of the secured image. 
     
     
         12 . The device according to  claim 1 , wherein, if no secure pattern is detected in the secured image, the device is configured to perform at least one of following: indicate that the secured image does not meet security requirements, exit the displaying of the secured image. 
     
     
         13 . The device according to  claim 1 , wherein the device is configured to perform the checking:
 at a certain point of time; and/or   after transmitting an information to a displaying device, which displays the secured image, wherein the information indicates a request for providing the secured image as currently displayed, and receiving the secured image as currently displayed.   
     
     
         14 . The device according to  claim 1 , wherein the device is configured to perform the monitoring with regard to the secured image as stored for displaying, with regard to the secured image as transmitted for displaying and/or with regard to the secured image as detected from a displaying device, which displays the secured image. 
     
     
         15 . A method for supporting displaying image data, wherein the image data in form of a data stream may change over the time, said method comprising:
 generating a secured image by means of an image generating device comprising a secured image generator based on a source image by generating at least one secured image part, wherein the secured image part is generated by combining a source image part of the source image with a corresponding secure pattern generated within the secured image generator; and   monitoring displaying the secured image by means of a monitoring device by detecting the corresponding secure pattern of the secured image part and by performing at least one of following: updating the detected secure pattern by changing the data comprised in the secured pattern, checking the currentness of the detected secure pattern by checking whether the detected secured pattern corresponds to the last updated secured pattern.