Object tracking method for automatic zooming and the apparatus therefor
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United States of America Patent
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Jul 18, 1995
Grant Date -
N/A
app pub date -
Oct 12, 1993
filing date -
Oct 9, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An object tracking apparatus for an automatic zoom lens control in a video camera includes a memory for storing data for zoom track lines showing the relationship between the distance variation of a zoom lens and the distance variation of a focus lens while the distance of an object is kept constant, a zoom encoder for producing a zoom position signal showing the zoom lens position, a microcomputer for detecting the variation amount of the zooming position, and a zoom motor for variably controlling the zoom lens position corresponding to the detected zoom speed. A corresponding method for automatic object tracking using a zoom lens is also described.
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