參數(shù)資料
型號(hào)： HV7161SPA2
廠商： Electronic Theatre Controls, Inc.
英文描述： CMOS Image Sensor with Image Signal Processing
中文描述： 的CMOS圖像傳感器和圖像信號(hào)處理
文件頁(yè)數(shù)： 46/72頁(yè)
文件大?。?/td> 2023K
代理商： HV7161SPA2
Confidential
HV7161SPA2
CMOS Image Sensor
With Image Signal Processing
This document has a general product description and is subject to change without notice.
MagnaChip Semiconductor Ltd. does not assume any responsibility for use of circuits described
and no patent licenses are implied.
- 46 -
2005 MagnaChip Semiconductor Ltd.
Anti-Banding Mode
When Anti-Banding is enabled, AE initializes Integration Time registers[73h-
75h]
to
2 x Anti-Banding Step value[7ah-7ch], and integration
increment/decrement amount is set to Anti-Banding Step value in order to
remove banding noise caused by intrinsic energy waveform of light sources.
Banding noise is inherent in CMOS image sensor that adopts rolling shutter
scheme for image acquisition. In this mode, AE operates with very large unit,
typically a reciprocal of (2 x power line frequency), so that minute integration
time tuning is not liable. Therefore, this mode is recommended for only
indoor use.
When AE is still of out lock state despite that AE preamp analog gain update
value exceeds preamp minimum gain value(18h) and integration time(73h-
75h) is reached to AE Anti-Banding Step(7ah-7ch), integration time(73h-75h)
is broken to less than AE Anti-Banding Step(7ah-7ch).
AE window mode enables. With this bit set to high, window mode is
discarded and full image data is accounted for AE Y frame mean evaluation.
Anti-Banding Min. Break
AE Window Enable
Time Speed
(fast)11 – 10 – 01 – 00(slow)
11
Gain-Only control mode. Only preamp gain is controlled to get
optimum exposure state.
Time-Only control mode. Only integration time is controlled to get
optimum exposure state.
Time-Gain control mode. Integration time and preamp gain are
controlled to get optimum exposure state.
AE function is disabled
10
01
AE Mode
00
AE Mode Control 2 [AEMODE2 : 71h : edh]
7
6
5
4
3
2
1
0
Gain Speed 1
Gain Speed 2
Time Fine
Tune
Gain Fine
Tune
Digital
Gain
Control
0
Analog
Gain
Control
1
1
1
1
0
1
1
Gain Speed1
This value means the speed of pre-amp. Gain changed when the
environment condition moves rapidly from low luminance to high luminance.
Gain Speed2
Gain update speed is specified as follows at the normal condition.
(fast)11 – 10 – 01 – 00(slow)
Time Fine Tune
Integration time fine tuning is performed when AE arrive around AE Fine
Tune Boundary to settle into AE lock state smoothly.
Gain Fine Tune
Amp gain fine tuning is performed when AE arrive around AE Fine Tune
Boundary to settle into AE lock state smoothly.
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