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| CONSUMER ELECTRONICS |
| Case Study |
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| Implementation of
Presentation Process for ARIB Standard |
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| The challenge |
| The project required the implementation
of Presentation Process for ARIB, which Wipro executed
for a customer. ARIB requires HD decoding with complex
graphics support, hence the challenge was to implement
and optimize “Presentation Process for ARIB”
to provide a glitch-less graphics display. |
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| The solution |
Wipro engineers developed the
following modules to enable ARIB Presentation Process.
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Wipro enabled
model for ARIB can support up to 32 planes. |
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There are no restrictions
on the sequence for the planes. The planes
can be blended and scaled in any arbitrary
sequence. |
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The standard supports different
input and output resolutions. To enable this
conversion a highly optimized scaling algorithm
for the complex graphics requirements was
developed. |
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To provide glitch-free
display many optimizations were done. E.g.
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Optimizations
for reducing blending
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A
graphics sub-system was developed
to keep a track of the modified
areas of the plane. |
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Portions of
planes can be made transparent
and opaque. |
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“Batch”
was implemented for small modifications. |
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Optimizations for
glitch-free display
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“ping-pong”
buffers were used for final display
canvas |
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Additional features like
updating a plane without making it immediately
visible were also enabled. |
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| The Benefits |
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Availability
of a ready-to-use model for the applications.
The applications do not have to deal with
the hardware directly. |
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The application can use
more than one plane for displaying data e.g.
displaying Still Picture on one plane, video
on another plane, OSD on another plane etc. |
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The application can make
a call to the model for modifying a rectangle
in a plane and all blending and scaling operations
are taken care by the model. |
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