Dc-iris control system
AssigneeAmbarella, Inc.
InventorBin Wang
Life of this patent
Estimating the term…
Abstract
An apparatus comprising an interface to a lens iris and a processor. The processor may be configured to present to the interface a signal configured to adjust the lens iris in response to a luma value received from an image sensor. The processor may be configured to adjust coefficient values for the signal. The coefficient values may be adjusted to converge a luma difference value to a set point. The processor may implement rules to determine the coefficient values. The rules may determine the coefficient values based on flexible relationships between input values based on the luma difference value and adjustment values for the coefficient values.
Claims16
An apparatus comprising:
- an interface to a lens iris;
- and
- a processor configured to (a) present to said interface a signal configured to adjust said lens iris and (b) adjust coefficient values for said signal, wherein (i) said coefficient values are adjusted to converge a luma difference value to a set point, (ii) said adjustment of said coefficient values is based on flexible relationships between (a) input values based on said luma difference value and (b) adjustment values for said coefficient values and (iii) said processor separates (a) said luma difference values into first levels, (b) values for a differential of said luma difference value into second levels and (c) said adjustment values for said coefficient values into a plurality of third levels.
Dependencies are inferred from the claim text.