µPD3729
9. Register imbalance: RI
The rate of the difference between the averages of the output voltage of Odd and Even pixels, against the average
output voltage of all the valid pixels.
n
2
∑ 2
n
(V2j – 1 – V2j)
j= 1
RI (%) =
n
∑ 1
n Vj
j= 1
× 100
n : Number of valid pixels
Vj : Output voltage of each pixel
10. Random noise: σ
Random noise σ is defined as the standard deviation of a valid pixel output signal with 100 times (=100 lines)
data sampling at dark (light shielding).
σ (mV) =
100
Σ (Vi – V)2
i=1
100
Σ 1 100
, V=
Vi
100 i=1
Vi: A valid pixel output signal among all of the valid pixels for each color
VOUT
V1
V2
V100
line 1
line 2
line 100
This is measured by the DC level sampling of only the signal level, not by CDS (Correlated Double Sampling).
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