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HV7151SP 데이터시트(PDF) 13 Page - Hynix Semiconductor

부품명 HV7151SP
상세설명  CMOS Image Sensor with Image Signal Processing
PDF  89 Pages
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제조업체  HYNIX [Hynix Semiconductor]
홈페이지  http://www.skhynix.com/kor/main.do
Logo HYNIX - Hynix Semiconductor

HV7151SP 데이터시트(HTML) 13 Page - Hynix Semiconductor

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HV7151SP
CMOS Image Sensor
Confidential
With Image Signal Processing
This document is a general product description and is subject to change without notice. Hynix
Semiconductor Inc. does not assume any responsibility for use of circuits described and no patent
licenses are implied.
- 13 -
2003 Hynix Semiconductor Inc.
matrix of color spread matrix. Nine registers for matrix coefficients are used in color correction
operation to get the optimal pure color. The relationship between input color and color-corrected color
is defined as below formula.
•
=
′
′
′
B
G
R
CRCM
CRCM
CRCM
CRCM
CRCM
CRCM
CRCM
CRCM
CRCM
B
G
R
33
32
31
23
22
21
13
12
11
where
R,G,B = Sensor color output
R’,G’,B’= Color-corrected output
Coefficients CRCMxx are programmable from –127/64 ~ 127/64. Programming register value for
intended color correction matrix coefficients should be resolved by the following equations.
For positive values, CRCMxx = Integer(Real Coefficient Value x 64);
For negative values, CRCMxx = Two’s Complement(Integer(Real Coefficient Value x 64));
Real Coefficient Value values from –127/64 ~ 127/64 can be programmed.
Color Space Conversion & Reverse Color Space Conversion
Both of color space conversion and reverse color space conversion are implemented by 3x3 matrix
operation. Output ranges of color space conversion and reverse conversion are existed two modes.
One is 16
≤ Y ≤235, 16≤ Cb,Cr ≤240 & 16≤ reverse-R,G,B ≤235 and Another is 0≤ Y,Cb,Cr ≤255 & 0≤
reverse-R,G,B
≤255. These different modes are selected by control register.
For color space conversion and reverse conversion matrix, the equation from CCIR-601 standard is
normally used.
< Conversion Equation >
Mode 1 :
255
~
0
:
255
~
0
:
255
~
0
:
128
128
0
081
.
0
419
.
0
500
.
0
500
.
0
331
.
0
169
.
0
114
.
0
587
.
0
299
.
0
Range
Range
Range
B
G
R
Cr
Cb
Y
+
•
−
−
−
−
=
Mode 2 :
240
~
16
:
240
~
16
:
235
~
16
:
128
128
16
071
.
0
368
.
0
439
.
0
439
.
0
291
.
0
148
.
0
098
.
0
504
.
0
257
.
0
Range
Range
Range
B
G
R
Cr
Cb
Y
+
•
−
−
−
−
=



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