L64105 LSI Logic Corporation, L64105 Datasheet - Page 305
L64105
Manufacturer Part Number
L64105
Description
Mpeg-2 Audio/video Decoder
Manufacturer
LSI Logic Corporation
Datasheet
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When the Force Video Background bits are set to No Background, the
active display area that is not occupied by the main display area
assumes the color black (Y = 16, Cb = Cr = 128). Usually, the main
display covers the entire active display area, except when displaying
small images or during letterbox filtering.
When set to Video Black, the active display area is set to black and the
main display does not appear. The OSD area is mixed with the black
background instead of the reconstructed images.
When set to Video Blue, the active display area assumes the color the
host entered into the Programmable Background registers (Registers
266–268,
page
4-60). The default value for these registers is saturated
blue (Y = 35, Cr = 114, Cb = 212), hence the name Video Blue. The
reconstructed images do not appear, and the OSD area is mixed with the
programmed background color instead.
When set to Video on Blue, the active display area that is not occupied
by the main display area assumes the programmable background color.
This mode is ideal for the display of small images surrounded by a
colored frame.
9.5 Still Image Display
The Display Controller can be programmed by the host to override the
display of normal decoded video sequences to display a still image frame
store instead. This is useful for Video CD still frame support and trick
mode control. The registers available to the host for this feature are listed
in
Table
9.4.
Still Image Display
9-13
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