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HV7121B

CMOS IMAGE SENSOR With 8-bit ADC

Hyundai Micro Electronics 

Electronics Industries Co., Ltd.

System IC Division

HV7121B

CMOS IMAGE SENSOR

With 8-bit ADC

< Display Window Programming >

The 400*300 resolution chip can read any user specific window area within active window area. This is

called panning function. For this function, ‘ row start’ , ‘ column start’ , ‘ width’ , and ‘ height’ can be

programmed with four sets of register pair.

n FRS : Frame Row Start

n FCS : Frame Column Start

n FWH : Frame window Height

n FWW : Frame Window Width

Panning window can be programmed as below.

(413,313)

(407,307)

manufacturer area

(0, 313)

{FWHU,FWHL}

(413,0)

{FWWU,FWWL}

(6,6)

{FRSU,FRSL}

(0,0)

{FCSU,FCSL}

active window area

Note 1) Accessible pixel array size is 402*302.

The edge of accessible pixel array may be commonly dedicated for just color interpolation.

In the case of a color image sensor the interpolation is needed to get all R,G,B color value for each pixel

from a Bayer color image.

So one more extra pixel line is needed at the edge of pixel array that you want to be displayed. That is, to make

400*300 effective window, 402*302 pixel array necessary.

You have to consider this interpolation line when you program the ‘ Frame register’ .

For example, if you want to get 300*250 image size, you have to program 302*252 to frame register.

This document is a general product description and is subject to change without notice. Hyundai Electronics does not assume any

responsibility for use of circuits described. NO patent licenses are implied.

DA41990615R_1.0

Division

16

1999 Hyundai System IC

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