Mask Insertion
Every video channel of Picolo U4 H.264 PCI-104 embeds a privacy mask insertion function.
Up to four rectangular regions of the Digital Active Area can be masked. The masked regions are colored in black. The masked regions are inserted on both the formatted and compressed streams.
The mask boundaries fit the macro block borders; the mask area is automatically modified to the smallest enclosing region which fits the 16 x 16 macro blocks border.
The digital active area is divided into square macro blocks of 16 x 16 pixels. The PAL digital active area is composed with 44 x 36 macroblocks; the NTSC digital active area is composed with 44 x 30 macroblocks.
You can define the position and the size of the four regions using the Mask0, Mask1, Mask2, Mask3 element.
Picolo U4 H.264 PCI-104 can achieve 4 privacy masks updates per second for all inputs.