LR38269 View Datasheet(PDF) - Sharp Electronics

Part Name

Description

MFG CO.

LR38269

Digital Signal Processor for Color CCD Cameras

Sharp Electronics 

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Color Level Suppression Under Lower

Illuminance

Working AGC gain can control both R – Y level

and B – Y level by the following equation.

R – Y level =

address 31h x {16 – (working AGC gain – address

5Ah) x address 5Bh ÷ 16} ÷ 16

B – Y level =

address 30h x {16 – (working AGC gain – address

5Ah) x address 5Bh ÷ 16} ÷ 16

{16 – (working AGC gain – address 5Ah) x

address 5Bh ÷ 16} ≤ 16

When (working AGC gain – address 5Ah) ≤ 0, ( ) = 0.

Aperture Level Suppression Under

Illuminance

Working AGC gain can control both the horizontal

aperture level and the vertical aperture level by the

following equation.

Horizontal aperture level =

address 68h x {16 – (working AGC gain – address

63h) x address 64h ÷ 16} ÷ 16

Vertical aperture level =

address 6Ah x {16 – (working AGC gain – address

63h) x address 64h ÷ 16} ÷ 16

{16 – (working AGC gain – address 63h) x

address 64h ÷ 16} ≤ 16

When (working AGC gain – address 63h) ≤ 0, ( ) = 0.

17

LR38269

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