Patent Application

App. No. 13/810,746

Abstract

Claims (36)

1 . A display controlling unit, comprising:

an input connectable to receive input image data representing an input image, wherein

the input image comprises a first set and a second set of image elements, and

said second set of image elements comprises a safety relevant information;

an output connectable to provide output image data representing an output image at least comprising said safety relevant information;

an image enhancement module arranged to perform image enhancement processing for said first set of image elements when a safety mode signal indicates a first mode; and

a verification module arranged to perform a verification processing for said second set of image elements when said safety mode signal indicates a second mode.

2 . The display controlling unit as claimed in claim 1 , comprising a safety mode controlling module connected to said image enhancement module and said verification module, wherein the safety mode is arranged to provide said safety mode signal.

3 . The display controlling unit as claimed in claim 1 , adapted to provide said second set of image elements to one or more specific sections of a display coupled to said output, wherein said one or more specific sections are dedicated to displaying said safety relevant information.

4 . The display controlling unit as claimed in claim 1 , wherein said image enhancement module is arranged to apply a noise signal to said first set of image elements.

5 . The display controlling unit as claimed in claim 1 , wherein said image enhancement module is arranged to dither said first set of image elements.

6 . The display control unit as claimed in claim 5 , wherein said dithering comprises a temporal dithering of said first set of image elements.

7 . The display controlling unit as claimed in claim 1 , wherein the output is arranged to provide output a sequence of output images.

8 . The display controlling unit as claimed in claim 1 , wherein said image enhancement processing comprises adding at least one random value to one or more image elements of said first set of image elements.

9 . The display controlling unit as claimed in claim 1 , wherein said verification module is arranged to compare said second set of image elements with a reference set.

10 . The display controlling unit as claimed in claim 9 , wherein said verification module is arranged to calculate a checksum for said second set and to compare said checksum with a reference checksum.

11 . The display controlling unit as claimed in claim 1 , wherein a number of quantization steps of said output image data is less than a number of quantization steps of said input image data.

12 . The display controlling unit as claimed in claim 1 , wherein said input image data comprises a plurality of image layers and wherein said display controlling unit further comprises a merging module for composing an image from said plurality of layers.

13 . The display controlling unit as claimed in claim 1 , wherein said display controlling unit is integrated on a single integrated circuit die.

14 . An image displaying system, comprising a display controlling unit as claimed in claim 1 and further comprising:

a display connected to receive said output image data and arranged to output an image in a for humans perceptible form; and

at least one image data source connected to provide said input image data.

15 . A method for outputting image data, the method comprising:

receiving input image data representing an input image comprising a first set and a second set of image elements, wherein said second set of image elements comprises a safety relevant information;

receiving a safety mode signal;

performing an image enhancement processing for said first set when said safety mode signal indicates a first mode;

performing a verification processing for said second set when said safety mode signal indicates a second mode; and

providing output image data representing an output image at least comprising said second set of image elements.

16 . The method of claim 15 further comprising:

displaying said second set of image elements on one or more specific sections of a display unit, wherein the one or more specific sections are dedicated to displaying safety relevant information.

17 . The method of claim 15 wherein said image enhancement processing comprises:

applying a noise signal to said first set of image elements.

18 . The method of claim 15 wherein said image enhancement processing comprises:

dithering said first set of image elements.

19 . The method of claim 18 wherein said dithering said first set of image elements comprises temporal dithering.

20 . The method of claim 15 wherein said verification processing comprises comparing said second set of image elements with a reference set.

Assignments (31)