KAC-1310 Ver la hoja de datos (PDF) - Unspecified

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KAC-1310

1280 (H) x 1024 (V) SXGA CMOS Image Sensor

Unspecified 

IMAGE SENSOR SOLUTIONS

IMAGE SENSOR SOLUTIONS

DC offset is loaded as a 6-bit value into the

Column DOVA DC Offset Register, (Table 23 on

page 51). The Column DOVA stage has only six

bits of total range. The value in Register 20h and

80h-BFh are added together prior to application to

the column. If the sum is greater than ±31, it will

be truncated to ±31.

Raw Gain Mode (WB and Exposure)

Gain ≈ 0.6950 + 0.02175 * Regd

≈ 1.3475 + 0.04350 * (Regd - 31)

Lin1 Gain Mode (WB and Exposure)

Gain ≈ 0.6950 + 0.04350 * Regd

Lin2 Gain Mode (Exposure gain stage only)

Gain ≈ 0.483 + 0.11119 * (Reg 10h)d

Programmable Gain Amplifier (PGA)

Gain Modes

Three different gain modes are available when the

sensor is performing White Balance and Exposure

gain. The gain mode is set using Register 22h

described in Table 25, page 53. The three gain

modes are:

0 < Regd < 31

32 < Regd < 63

(0.0695x Æ1.36925x)

(1.3910x Æ 2.7395x)

0 < Regd < 47

(0.695x Æ 2.7395x)

0 < Regd < 63

(0.483x Æ 7.488x)

Raw Gain Mode:

The three gain stages are each designed as two-

piece linear gain stages where the gain increment

doubles for the second half of the programmable

range. The gain increment is 0.02175 for the first

32 programmable steps, and precisely twice that

(0.04350) for the last 32 programmable steps.

Lin1 Gain Mode:

Some applications do not need the finer gain

increment provided by the Raw Gain Mode in the

first 32 register values. In Lin1 mode, every other

step of the lower register is skipped, providing 16

uniform gain steps of 0.04350. As a result, the

entire gain stage now appears to be a linear gain

stage with 48 uniform steps of 0.04350.

Lin2 Gain Mode:

This mode is only available for the exposure gain

mode. In this mode, both gain stages are

automatically coordinated to affect a single gain

stage. The gain step size of Lin2 Mode is almost,

but not completely uniform. Any one step may

deviate from the mean step size of 0.11119 by a

small amount. This is due to the fact that Lin2

Mode actually varies two gain stages with fixed

step sizes to make one equivalent gain step.

17

KAC-1310 Rev 4 • www.kodak.com/go/imagers 585-722-4385 Email: imagers@kodak.com

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