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| 型號(hào)： | HV7131B |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | CMOS IMAGE SENSOR With 8-bit ADC |
| 中文描述： | CMOS圖像傳感器的8位ADC |
| 文件頁數(shù)： | 14/29頁 |
| 文件大?。?/td> | 834K |
| 代理商： | HV7131B |
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HV7131B
Electronics Industries Co., Ltd.
System IC Division
CMOS IMAGE SENSOR
With 8-bit ADC
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.
DA31991011R_1.0 - 14 - 1999 Hyundai System IC Division
PRELIMINARY
l
Master clock divider register
This four bits register is used to divide external pixel clock for internal use. The actual pixel operating
frequency used in the sensor is the same as external pixel frequency divided by divisor as below.
Register value
Divisor
Register value
0
1
4
1
2
5
2
4
6
3
8
7
Divisor
16
32
64
128
Register value
8
9
10
11
Divisor
256
512
1024
2048
CHARATERISTICS ADJUSTMENT REGISTERS
Each sensor has a little different photo-diode characteristics so that the sensor provides internal
adjustment registers that calibrate internal sensing circuit in order to get optimal performance. There are
three kinds of registers as below.
l
Reset level register[8’h30]
The register controls the voltage level that is initially compared to pixel analog voltage, and the initial
voltage level is called as “reference voltage level”. Internal DAC analog voltage decrements from
reference voltage level until the pixel analog voltage output is lager than DAC analog voltage.
Appropriate reference voltage level varies from various factors, such as process variation, luminance,
etc. If the register value is set to too large or too small value, vertical fixed pattern noise may be
produced. Therefore this register value must be programmed to appropriate value in order to avoid FPN.
For the automatic reset level control, please refer to Reset Level Statistics Register Section. High
register value means high reference voltage and large digital output. Program value range is 0~63,
l
RGB gain registers[8’h31-8’h33]
There are three color gain registers for R, G, B pixels, respectively. These registers are used to amplify
digital pixel output . If the gain register value is decreased, digital pixel output is increased. That is,
under dark light condition the pixel output is not enough to get right image so that we must amplify the
output value by decreasing gain value to get good image. These registers may be used for white
balance and color effect with independent R,G,B color control. Program value range is 0~63.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HV7131GP | CMOS Image Sensor with Image Signal Processing |
| HV7131RP | CMOS Image Sensor with Image Signal Processing |
| HV7131E1 | CMOS IMAGE SENSOR With 8-bit ADC |
| HV7131D-COB | CMOS IMAGE SENSOR With 8-bit ADC |
| HV7131D-COF | CMOS IMAGE SENSOR With 8-bit ADC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HV7131D | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:CMOS IMAGE SENSOR With 8-bit ADC |
| HV7131D-COB | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:CMOS IMAGE SENSOR With 8-bit ADC |
| HV7131D-COF | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:CMOS IMAGE SENSOR With 8-bit ADC |
| HV7131E1 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:CMOS IMAGE SENSOR With 8-bit ADC |
| HV7131GP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CMOS Image Sensor with Image Signal Processing |
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