Multiplexer, video system, aircraft and method for outputting video data

1 . A multiplexer comprising:

a first video data input configured to receive first video data, the first video data including a predetermined number of pixels representing all pixels of the first video data;

a second video data input configured to receive second video data;

a video data output configured to output the first video data and the second video data;

a switching device arranged between the first and second video data inputs and the video data output and configured to switch between providing the first video data to the video data output and providing the second video data to the video data output;

a video evaluation device configured to analyze the first video data and to determine a first pixel of a video frame contained in the first video data; and

a first pixel counting device configured to assign the first video data to a plurality of video frames based on the predetermined number of pixels and to take the first pixel, determined by the video evaluation device, and determine a number of pixels output of the first video data;

wherein, when the number of pixels output of the first video data reaches the predetermined number of pixels, the switching device is configured so that all of the first video data are output by the video data output; and

wherein, when the number of pixels output of the first video data is below the predetermined number of pixels, the switching device is configured so that all of the second video data are output by the video data output.

2 . The multiplexer according to claim 1 , wherein the multiplexer is further configured so that all of the first video data are transferred to the switching device.

3 . The multiplexer according to claim 1 , wherein the first pixel counting device is configured to take the first pixel, determined by the video evaluation device, as a basis for causing the switching device to output the second video data when all pixels of the video frame contained in the first video data have been output.

4 . The multiplexer according to claim 1 , further comprising:

a second pixel counting device configured to take the first pixel, determined by the video evaluation device, as a basis for causing the second video data to be transferred to the switching device when all pixels of the video frame contained in the first video data have been output.

5 . The multiplexer according to claim 1 , further comprising:

a storage device configured to store the second video data.

6 . A video system comprising:

at least one multiplexer, the at least one multiplexer according to claim 1 ;

a first video data generation apparatus connected to the first video data input of the at least one multiplexer;

a second video data generation apparatus connected to the second video data input of the at least one multiplexer; and

at least one video display apparatus connected to the video data output of the at least one multiplexer.

7 . The video system according to claim 6 , wherein the first video data generation apparatus is designed to generate essential video data, and the second video data generation apparatus is designed to generate non-essential video data.

8 . The video system according to claim 6 , further comprising:

a plurality of multiplexers, the first video data generation device connected to each first video data input of each of the multiplexers from the plurality of multiplexers, and the second video data generation connected to each second video data input of each of the multiplexers from the plurality of multiplexers; and

a plurality of video display apparatuses, each of the video display apparatus from the plurality of video display apparatuses connected to the video data output of one of the multiplexers from the plurality of multiplexers.

9 . An aircraft comprising:

a video system according to claim 6 .

10 . A method for outputting video data, the method comprising:

receiving first video data by way of a first video data input of a multiplexer, the first video data including a predetermined number of pixels representing all pixels of the first video data;

receiving second video data by way of a second video data input of the multiplexer;

determining a first pixel of a video frame contained in the first video data by way of a video evaluation device of the multiplexer;

assigning the first video data to a plurality of video frames based on the predetermined number of pixels;

counting a number of pixels output of the first video data by way of a first pixel counting device of the multiplexer; and

outputting video data by way of a video data output of the multiplexer, the first video data being output when the number of pixels output of the first video data reaches the predetermined number of pixels and the second video data being output only when the number of pixels output of the first video data is below the predetermined number of pixels, indicative that all of the first video data have been output.

11 . The method according to claim 10 , further comprising a switching device of the multiplexer configured to utilize the first pixel counting device to determine when all of the first video data have been output.

12 . The method according to claim 10 , wherein the second video data are transferred only to a switching device when a second pixel counting device of the multiplexer takes the determined first pixel of the video frame contained in the first video data as a basis for determining that all of the first video data have been output.

13 . The method according to claim 10 , wherein the second video data are stored in a storage device of the multiplexer.