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AssigneeSorenson IP Holdings, LLC
InventorsMark Nelson, Conrad Maxwell
Estimating the term…
Systems, methods, and computer-readable mediums for autofocusing cameras in a videophone are disclosed. A videophone system may include a camera having a lens, a lens actuator configured to move the lens, and an image sensor configured to capture images received through the lens. The videophone system may also include a distance sensor configured to determine an object of focus distance between the camera lens and the object of focus. The system includes memory for storing instructions that when executed by a processor cause the camera lens to automatically focus on the object of focus. The processor includes a lookup table configured to corelate an object of focus distance determined by the distance sensor with a digital number that can be converted by a digital to analog converter to a power value sufficient to power lens actuator to move the lens to a predetermined focus position. The lookup table is configured to correlate an object of focus distance returned by the distance sensor with a digital number representing a lens position, such that the object of focus falls within a depth of field about a focal plane corresponding to the lens position.
A videophone system, comprising:
A method of autofocusing a camera in a videophone system, the videophone system comprising a camera lens, a lens actuator configured to move the camera lens, an image sensor configured to capture an image received through the camera lens, a distance sensor configured to determine a distance from the camera lens to an object of focus, and a digital to analog converter (DAC) configured to convert a plurality of DAC digital numbers to a plurality of analog power values, each power value used to power the lens actuator to move the camera lens to a lens position, the method comprising:
A non-transitory computer-readable medium storing program instructions that, when executed on one or more processors cause the instructions to perform operations, the operations comprising:
Dependencies are inferred from the claim text.