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

10407155

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

Affiliated with

Also associated with

Rating

Focusing apparatus, camera and focus position detecting method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Focusing apparatus, camera and focus position detecting method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Focusing apparatus, camera and focus position detecting method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3908512