H1A424M167 Datasheet, PDF (25/47 Pages) Hynix Semiconductor – Image Signal Processor for Hyundai CMOS Image Sensor

Hyundai Electronics Industries Co., Ltd.
H1A424M167
Base Function Enable Register[81h]
[01h]
[5]
[4]
[3]
[2]
[1]
[0]
[ 5 ] RB Interpolation Mode Set
[R/W]
Two R/B color interpolation methods are supported when R or B color
component is interpolated from neighbor pixels’s information for full RGB color
in VGA mode:
a) average mode that interpolates missing R or B by just averaging neighbor
R or B pixels,
b) chromacity mode that interpolates missing R or B from utilizing neighbor
chromacitis values, (R-G) or (B-G).
This bit specifies which one of the color interpolation methods is used
1 : Average,
0 : Chromacity
[ 4 ] G Interpolation Mode Set
[R/W]
Two G color interpolation methods are supported when G color component is
interpolated from neighbor G pixels's information for full RGB color in VGA
mode:
a) median mode that interpolates missing G by averaging median neighbor
G values excluding maximum/minimum neighbor G values.
b) average mode that interpolates missing G by averaging all neighbor G
values.
This bit specifies which one of G color interpolation methods is used
1 : Median,
0 : Average
[ 3 ] X-Flip Function Enable
[R/W]
The function enables the horizontal flip(left-right changed) of input image data.
In oder to get the flipped standard image size(640x480) with VGA
interpolation mode selected, input image data input size should be 642x483
that height size is one more line increased, to account for Bayer input data to
be flipped before any processing proceeds.
For other flipped image size format outputs(CIF/SIF/QCIF/QSIG), the input
image size is the same as that for unflipped image data out, 640x482.
1: X-Flip ON,
0 : X-Flip OFF
[ 2 ] Gamma Function Enable
[R/W]
Piecewise linear gamma approximation method is implemented. Precise piece
linear segments are supported and user-programmable.
For more details, refer to gamma register description section.
1 : Gamma ON,
0 : Gamma OFF
[ 1 ] Color Matrix Function Enable
[R/W]
This function compensates color spread effect of color filters and sensing
circuits to get the optimal pure color reproduction. color matrix coefficients are
programmable from -127/64 to 127/64. Offset compensation registers are also
supported.
1 : Color Matrix ON, 0 : Color Matrix OFF
1999 October 11
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