METHOD AND APPARATUS WITH FAST CAMERA AUTO FOCUS
First Claim
1. A method for improving an auto-focus system, comprising:
- as part of an autofocus operation, altering at least one lens of a digital camera to at least one of a plurality of predetermined nonuniform lens positions corresponding to predetermined nonuniform lens position data; and
selecting a final lens position for the lens based on the predetermined nonuniform lens position data.
3 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus improves an auto focus system by altering, such as by positioning, at least one lens of a digital camera to a plurality of predetermined nonuniform lens positions corresponding to predetermined nonuniform lens position data. The method and apparatus selects a final lens position for the lens based on the predetermined nonuniform lens position data. In one example, a fixed number of predetermined nonuniform lens positions define a set of lens positions used to capture images during an auto focus operation. A final image is captured using a final lens position. The final lens position is determined by comparing focus metric information from each of the frames obtained at the various predetermined nonuniform focus lens positions and selecting the frame with, for example, the best focus metric as the lens position to be used for the final picture or image capture.
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Citations
18 Claims
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1. A method for improving an auto-focus system, comprising:
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as part of an autofocus operation, altering at least one lens of a digital camera to at least one of a plurality of predetermined nonuniform lens positions corresponding to predetermined nonuniform lens position data; and selecting a final lens position for the lens based on the predetermined nonuniform lens position data. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A circuit for improving an auto-focus system, comprising:
auto focus control logic operative to alter a lens to a plurality of predetermined nonuniform lens positions corresponding to predetermined nonuniform lens position data; and
operative to select a final lens position based on the predetermined nonuniform lens position data.- View Dependent Claims (8, 9, 10)
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11. An apparatus comprising:
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a camera having a focusable lens; memory containing predetermined nonuniform lens position data; auto focus control logic operative to configure the lens to predetermined nonuniform lens positions corresponding to the predetermined nonuniform lens position data and to select a final lens position based on the predetermined nonuniform lens position data; and a user interface circuit operative to activate the auto-focus circuit. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification