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IMAGE SENSOR SOLUTIONS
Functional Description (continued)
5.0
FRAME RATE & EXPOSURE CONTROL
5.2 Analog Gain and Color Gain
There are two analog gain stages built into the sensor before the
5.1 Introduction
A frame is defined as the time it takes to reset every pixel in the
array, integrate the incident light, convert it to digital data and
present it on the digital video port. This is not a concurrent pro-
cess and is characterized in a series of events each needing a
certain amount of time as shown in Figure 18.
A/D allowing the video and separate color gains to be pro-
grammed.
The video gain is given by:
V gain = 1+ 0.07032 * VidGain
Where:
Start
VidGain
is the six bit video gain step programmed in the
VGAIN register
Row address = 0
Row delay time
Transfer all pixels to CDS
Reset all pixels in row
The second stage of programable gain consists of three parallel
channels that allows indvidual RGB gains to be set. For mono-
chrome applications all pixels should be routed to the green
channel (G gain ) by setting the GainMode bit of the MCFG0 regis-
ter to a logic 1.
The red gain is given by:
R gain = 1 + 0.03125 * RGain
Where:
Shift all pixels out of row
RGain
is the six bit video gain step programmed in the
RGAIN register
Row address + 1
The green gain is given by:
G gain = 1 + 0.03125 * GGain
Yes
Last row?
No
Where:
Figure 18. Frame Readout Flow Diagram
GGain
is the six bit video gain step programmed in the
GGAIN register
The following factors effect frame rate, the:
The blue gain is given by:
?
frequency of Hclk
?
?
size of the “ Scan Window ”
sub sampling mode
B gain = 1 + 0.03125 * BGain
? programmed row delay
? programmed frame delay.
The following factors effect exposure but not frame rate
? analog gain
? integration time
? modification of the sensor ’s linear response.
This section describes how to program the frame rate and expo-
sure time.
www.kodak.com/go/imagers 585-722-4385
15
Where:
BGain
is the six bit video gain step programmed in the
BGAIN register
Email:imagers@kodak.com
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相关PDF资料
KAC-9627
IC SENSOR IMAGE VGA 48CLCC
KB-A100SRW
LIGHT BAR 660NM RED 8.89X3.81MM
KB-B100SRW
LIGHT BAR 660NM RED 19.05X3.81MM
KB-C100SRW
LIGHT BAR 660NM RED 8.89X8.89MM
KB-D100SRW
LIGHT BAR 660NM RED 8.89X3.81MM
KB-E100SRW
LIGHT BAR 660NM RED 8.89X3.81MM
KB-F100SRW
LIGHT BAR 660NM RED 19.05X3.81MM
KB-G100SRW
LIGHT BAR 660NM RED 8.89X8.89MM
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功能描述:IC SENSOR IMAGE VGA 48-CLCC RoHS:是 类别:传感器，转换器 >> 图像，相机 系列:- 标准包装:480 系列:- 象素大小:6.7µm x 6.7µm 有源象素阵列:768H x 488V 每秒帧数:52 电源电压:3.3V 类型:CMOS 成像 封装/外壳:48-QFP 供应商设备封装:48-QFP 包装:托盘 请注意:* 配用:4H2105-ND - HEADBOARD FOR KAC-004014H2104-ND - KIT EVAL FOR KAC-00401 其它名称:4H20954H2095-NDKAC-00401-CBC-LB-A0
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功能描述:IC SENSOR IMAGE VGA 48CLCC RoHS:是 类别:传感器，转换器 >> 图像，相机 系列:- 标准包装:480 系列:- 象素大小:6.7µm x 6.7µm 有源象素阵列:768H x 488V 每秒帧数:52 电源电压:3.3V 类型:CMOS 成像 封装/外壳:48-QFP 供应商设备封装:48-QFP 包装:托盘 请注意:* 配用:4H2105-ND - HEADBOARD FOR KAC-004014H2104-ND - KIT EVAL FOR KAC-00401 其它名称:4H20954H2095-NDKAC-00401-CBC-LB-A0
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