Video processing device and method of processing video data
View Patent ↗A video-processing device is provided for processing a main video data flow and a secondary video data flow. The secondary video data flow constitutes a scaled version of the main video data flow. The video-processing device comprises a tap-off unit (T, T 2 ) having an input for receiving the main video data flow. The tap-off unit (T, T 2 ) comprises at least a first and second output, wherein each of the outputs corresponds to the input of the tap-off unit. A first H- and V-scaling unit (HVS 1 ) is coupled to the first output of the tap-off unit (T, T 2 ) for performing a first H- and V-scaling on the main video flow. A second H- and V-scaling unit (HVS 2 ) is coupled to the second output of the tap-off unit for performing a second H- and V-scaling on the secondary video flow to provide a scaled secondary video flow. By tapping-off the main video flow there is no need for the device to access a memory to extract the video data from the main video flow to provide a secondary video flow.
1. Video processing device for processing a main video data flow and a secondary video data flow, wherein the secondary video data flow constitutes a scaled version of the main video data flow, comprising:
a tap-off unit having an input to receive the main video data flow from the video capturing unit for providing at least a first and second output, wherein each of the outputs correspond to the input;
a first H- and V-scaling unit (HVS 1 ) coupled to the first output of the tap-off unit (T, T 2 ) for performing a first H- and V-scaling on the main video flow;
a second H- and V-scaling unit coupled to the second output of the tap-off unit for performing a second H- and V-scaling on a secondary video flow to provide a scaled secondary video flow, the secondary video flow constituting a scaled version of the main video data flow;
a memory, wherein the output of the second H- and V-scaling unit is buffered in the memory before being output to an output of the secondary video flow;
a spatial noise reduction unit for performing a spatial noise reduction;
a temporal noise reduction unit for performing a temporal noise reduction, and
a de-interlacing unit for de-interlacing the main video flow; and wherein the tap-off unit is coupled to the output of the de-interlacing unit (DEI).
2. Video processing device according to claim 1 , wherein the second H- and V-scaling unit performs a downscaling of every odd or even frame and the output of the second H- and V-scaling unit is buffered in an output buffer, wherein for every even or odd frame the downscaled video data buffered in the output buffer is forwarded to the first H- and V-scaling unit for performing an up-scaling corresponding to the downscaling performed by the second H- and V-scaling unit.
3. Method for processing video data by processing a main video flow and a secondary video flow, wherein the secondary video flow constitutes a scaled version of the main video flow, comprising:
tapping-off the main video flow with a tap-off unit to provide a first and second tapped-off output,
performing a first H- and V-scaling of the first tapped-off output to provide H- and V-scaling of the main video flow with a first H- and V-scaling unit, and
performing a second H- and V-scaling of the second tapped-off output to provide a H- and V-scaling of the secondary video flow with a second H- and V-scaling unit;
buffering the output of the second H- and V-scaling in a memory;
performing a spatial noise reduction;
performing a temporal noise reduction,
de-interlacing the main video flow with a de-interlacing unit; and
wherein the tap-off unit is coupled to the output of the de-interlacing unit (DEI).
4. The method of claim 3 , further comprising:
performing a downscaling of every odd or even frame and the output of the second H- and V-scaling buffered in an output buffer, wherein for every even or odd frame the downscaled video data buffered in the output buffer is forwarded to the first H- and V-scaling unit for performing an up-scaling corresponding to the downscaling performed by the second H- and V-scaling unit.
5. A system, comprising:
a video processor, the video processor including:
a video capturing unit configured to capture a main video data flow;
a tap-off unit having an input to receive the main video data flow from the video capturing unit for providing at least a first and second output, wherein each of the outputs correspond to the input;
a first H- and V-scaling unit (HVS 1 ) coupled to the first output of the tap-off unit (T, T 2 ) for performing a first H- and V-scaling on the main video flow;
a second H- and V-scaling unit coupled to the second output of the tap-off unit for performing a second H- and V-scaling on a secondary video flow to provide a scaled secondary video flow, the secondary video flow constituting a scaled version of the main video data flow;
a memory, wherein the output of the second H- and V-scaling unit is buffered in the memory before being output to an output of the secondary video flow;
a spatial noise reduction unit for performing a spatial noise reduction;
a temporal noise reduction unit for performing a temporal noise reduction, and
a de-interlacing unit for de-interlacing the main video flow; and wherein the tap-off unit is coupled to the output of the de-interlacing unit (DEI).
6. The system of claim 5 , wherein the second H- and V-scaling unit performs a downscaling of every odd or even frame and the output of the second H- and V-scaling unit is buffered in an output buffer, wherein for every even or odd frame the downscaled video data buffered in the output buffer is forwarded to the first H- and V-scaling unit for performing an up-scaling corresponding to the downscaling performed by the second H- and V-scaling unit.