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MT9M114 数据表(PDF) 26 Page - ON Semiconductor

部件名 MT9M114
功能描述  High?륞efinition (HD) System?륮n?륾?륝hip (SOC) Digital Image Sensor
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

MT9M114 数据表(HTML) 26 Page - ON Semiconductor

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26
Cam_scale_vertical_tc_percentage defines how much tilt
needs to be corrected for in percentage terms.
The effect of using cam_scale_vertical_tc_mode can be
seen below.
Figure 27. The Effect of Using CAM_SCALE_VERTICAL_TC_MODE
Original Scene Tilted
MODE_STRETCH_FROM_CENTRE_EN = 0
MODE_STRETCH_FROM_CENTRE_EN = 1
CAMERA CONTROL AND AUTO FUNCTIONS
Auto Exposure
The auto exposure algorithm performs automatic
adjustments of the image brightness by controlling exposure
time and analog gains of the sensor core as well as digital
gains applied to the image.
Auto exposure is implemented by a firmware driver that
analyzes image statistics collected by the exposure
measurement engine, makes a decision, and programs the
sensor core and color pipeline to achieve the desired
exposure. The measurement engine subdivides the image
into 25 windows organized as a 5
× 5 grid.
Four auto exposure algorithm modes are available:
Average brightness tracking (ABT) or Average Y
(ae_rule_algo VAR = 9, 0x0004, 0x0000 or
REG = 0xA404, 0x0000)
The average brightness tracking AE uses a constant
average tracking algorithm where a target brightness
value is compared to a current brightness value, and the
gain and integration time are adjusted accordingly to
meet the target requirement.
Weighted Average Brightness (ae_rule_algo VAR = 9,
0x0004, 0x0001 or REG = 0xA404, 0x0001)
Each of the 25 windows can be assigned a weight
relative to other window weights, which can be
changed independently of each other. For example, the
weights can be set to allow the center of the image to be
weighted higher than the periphery. See Figure 28.
Figure 28. 5
y 5 Grid
W 0,0
W 0,1
W 0,2
W 0,3
W 0,4
W 1,0
W 1,1
W 1,2
W 1,3
W 1,4
W 2,0
W 2,1
W 2,2
W 2,3
W 2,4
W 3,0
W 3,1
W 3,2
W 3,3
W 3,4
W 4,0
W 4,1
W 4,2
W 4,3
W 4,4


类似零件编号 - MT9M114_1

制造商部件名数据表功能描述
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MT9M114 ONSEMI-MT9M114_16 Datasheet
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Rev. 11, 2/16 EN
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类似说明 - MT9M114_1

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