HD49801FB Datasheet, PDF (13/43 Pages) List of Unclassifed Manufacturers – Digital Signal Processing IC for CCD Cameras

HD49801FB
State Data Details
The following items describe the state data (A1 to A16) in detail.
State Data A1 to A3: RGB matrix
This data specifies color reproducibility and moire pattern suppression.
HD49801FB
Coefficient K_Gb, j
Coefficient K _Wr, j
Coefficient K_Wb, j
Coefficient K_Gr , j Address
DDD
1110 9
D
8
D
7
D
6
D
5
D
4
D
3
D
2
DDDD
1 1110 9
D
8
D
7
D
6
D
5
D
4
D
3
D
2
DDDD
1 1110 9
D
8
D
7
D
6
D
5
D
4
D
3
D
2
DDDD
1 1110 9
DD
87
D
6
D
5
D
4
DD
32
D
1
0
0
D
2
D
1
Mantissa Exponent
(j = RGB)
Address
0000
0001
0010
Matrix
R
G
B
Gb
Wr
R
Gb
G = A (Kij) ^Wr
R
G
Wb
B
Wb
Gr
B
Gr
Kij
Kij = (–1)^D11 · 2^{–(D10 × 21 + D9 × 20)}
· (D8 × 2^–1 + D7 × 2^–2 + D6 × 2^–3 + D5 × 2^–4 + D4 × 2^–5 + D3 × 2^–6 + D2 × 2^–7 + D1 × 2^–8)
Where: i = Gb, Wr, Wb, Gr
j = R, G, B
Determine the size of the coefficients so that MAX (K_Gbj, K_Wrj, K_Wbj, K_Grj) = 255/256(00011111111).
State Data A4: W/B RGB gain
This data adjusts the amplitude of the color signal and determines the color reproducibility. It also adjusts
the white balance for images of white objects.
R gain: G_R
G gain: G_G
B gain: G_B
Address
DDD
1110 9
D
8
D
7
D
6
D
5
D
4
D
3
D
2
DDDD
1 1110 9
D
8
D
7
D
6
D
5
D
4
D
3
D
2
DDDD
1 1110 9
D
8
D
7
D
6
D
5
D
4
D
3
D
2
D
1
0
0
1
1
Mantissa Exponent
Gi = 2 (D11 × 2² + D10 × 2¹ + D9 × 2⁰ + 1)
· (D8 × 2^–1 + D7 × 2^–2 + D6 × 2^–3 + D5 × 2^–4 + D4 × 2^–5 + D3 × 2^–6 + D2 × 2^–7 + D1 × 2^–8)
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