Television – Camera – system and detail – Optics
Patent
1993-02-26
1994-08-23
Mancuso, Joseph
Television
Camera, system and detail
Optics
348349, 354402, H04N 5232
Patent
active
053411706
ABSTRACT:
An auto focusing device includes an image pickup device for photographing a subject and for outputting a video signal of the photographed subject, a digitizing device for digitizing the video signal from the image pickup device, an orthogonal transformation device for orthogonally transforming the digitized video signal to each frequency component so as to adjust a focusing point of the image pickup device on the basis of each of the frequency components, and a grouping device for arranging together the frequency components having a similar characteristic as one group to make a plurality of groups of focusing information data so that the focusing point of the image pickup device is adjusted on the basis of the focusing information data of the plurality of groups.
REFERENCES:
patent: 4484806 (1984-11-01), Onishi et al.
patent: 4872058 (1989-10-01), Baba et al.
patent: 4967279 (1990-10-01), Murashima
patent: 4990947 (1991-02-01), Komiya et al.
patent: 4998126 (1991-03-01), Kazami
IEEE Transactions of Communications, vol. COM-32, No. 3, Mar. 1984; "Scene Adaptive Coder".
Ho Tuan V.
Mancuso Joseph
Ricoh & Company, Ltd.
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