VV6301 View Datasheet(PDF) - Vision
Part Name
Description
MFG CO.
'VV6301' PDF : 51 Pages View PDF
VV5301 & VV6301
Exposure Control
5.5 Gain Setting
An external gain value can be written to the sensor as follows.
Gain binary code
Effective system gain
000
1.000
001
2.000
010
1.333
011
4.000
100
1.143
101
2.667
110
1.600
111
8.000
Table 5 : Gain settings
If the image is to dark and the exposure is already close to its maximum the automatic exposure algorithm will attempt to use
extra steps of gain to improve the image brightness. Each change applied by the internal algorithm will double the current value.
To compensate for this increase in gain the current exposure is set to half of the maximum value. This should ensure that the
user will not be aware of a step change in the scene brightness.
Similarly if the image is too bright and the integration period is short then gain will be reduced by one step (i.e. divide by two). As
before, the exposure value is set to half the maximum integration period. The exposure controller can then adjust the exposure
value as necessary to provide a correctly exposed image.
If the user disables the automatic exposure/gain controller then the extra gain settings detailed in Table 5 above are available.
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