Object tracking method for automatic zooming and the apparatus t

Details Object tracking method for automatic zooming and the apparatus t Object tracking method for automatic zooming and the apparatus t

1993-10-12

1995-07-18

Mancuso, Joseph

Television

Camera, system and detail

Optics

348345, 348358, 348361, 354402, H04N 5232

Patent

active

054346215

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.

REFERENCES:
patent: 4991944 (1991-02-01), Hirao et al.
patent: 5113214 (1992-05-01), Nagata et al.
patent: 5287223 (1994-02-01), Hirasawa
"Novel Technologies for Automatic Focusing and White Balancing of Solid State Color Video Camera" by K. Harna et al.

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