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STV0974 Datasheet(PDF) 14 Page - STMicroelectronics

Part # STV0974
Description  Mobile Imaging DSP
PDF  69 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STV0974 Datasheet(HTML) 14 Page - STMicroelectronics

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STV0974
Functional description
4.4.1
Raster to block converter
This block transforms the raster scan ordered data into block based ordered data. This data
ordering is compliant with ISO DIS 10918-1 Annex A - Section A.2.
The sequence of the input data stream is the following: line 1 from left to right up to pixel n, then line
2 from left to right......up to line m, pixel n.
The output data stream sequence is block based. The image is segmented into MCU (minimum
coded units) as illustrated in
Figure 5.
Figure 4: Data sequence at Raster to block input
Figure 5: MCU data order
YU Y V YU Y V YU Y V
YU Y V YU Y V
Y U Y V Y U Y V YU Y V
YU Y V YU Y V
YU Y V YU Y V YU Y V
YU Y V YU Y V
YU Y V YU Y V Y U Y V
Y U Y V Y U Y V
YU Y V YU Y V Y U Y V
Y U Y V Y U Y V
YU Y V YU Y V YU Y V
YU Y V YU Y V
YU Y V YU Y V YU Y V
YU Y V YU Y V
Y U Y V Y U Y V YU Y V
YU Y V YU Y V
YU Y V YU Y V Y U Y V
Y U Y V Y U Y V
YU Y V YU Y V YU Y V
YU Y V YU Y V
YU Y V YU Y V YU Y V
YU Y V YU Y V
Y U Y V Y U Y V YU Y V
YU Y V YU Y V
YU Y V YU Y V YU Y V
YU Y V YU Y V
YU Y V YU Y V Y U Y V
Y U Y V Y U Y V
line 1
line m
pixel 1
pixel n
line 1
line n
pixel 1
pixel n
MCU(1,1)
MCU(2,1)
MCU (n/16 -1,1) MCU (n/16,1)
MCU(2,1)
MCU(1,n/8)
MCU(2,n/8)
MCU(n/16 -1,n/8) MCU (n/16,n/8)
8 pixels
16 pixels



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