Focusing apparatus, camera and focus position detecting method

Details Focusing apparatus, camera and focus position detecting method Focusing apparatus, camera and focus position detecting method

2008-01-15

2008-01-15

Ometz, David (Department: 2622)

Television

Camera, system and detail

Optics

C348S354000, C348S355000

Reexamination Certificate

active

07319487

ABSTRACT:
A focusing apparatus includes a filter unit for performing frequency filtering processing on an image pickup signal, and a focus position detecting unit for detecting a focus position based on the contrast value of the image pickup signal having undergone the frequency filtering processing by the filter unit. The filter unit has a first filter for normal position detection, and a second filter for infinity position detection having a frequency characteristic different from that of the first filter, and selects the first filter or the second filter.

REFERENCES:
patent: 4853788 (1989-08-01), Murashima et al.
patent: 5003339 (1991-03-01), Kikuchi et al.
patent: 5249058 (1993-09-01), Murata et al.
patent: 5325146 (1994-06-01), Toji
patent: 5802405 (1998-09-01), Sugimoto
patent: 3-64715 (1991-03-01), None
patent: 05-103250 (1993-04-01), None
patent: 06-062301 (1994-03-01), None
patent: 2000-206403 (2000-07-01), None
patent: 2001-281533 (2001-10-01), None

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