Photometric apparatus

Details Photometric apparatus Photometric apparatus

2005-05-31

2005-05-31

Lauchman, Layla (Department: 2877)

Optics: measuring and testing

Photometers

Photoelectric

C356S215000, C356S404000, C396S121000, C396S292000, C396S213000

Reexamination Certificate

active

06900886

ABSTRACT:
A photometric apparatus includes an exposure value calculator for calculating an exposure value based on light data from a photo sensor and an inputted photosensitivity; an exposure value difference calculator for calculating a difference between a calculated exposure value and a reference exposure value; a gamma characteristic provider, which provides a gamma characteristic concerning a relationship between the exposure value difference and a gradation value of digital data; a gradation calculator for calculating, based on the exposure value difference and the gamma characteristic, a gradation value of digital data in connection with an object having the calculated exposure value when the object is photographed at the reference exposure value; and an indicator for indicating the calculated gradation value of digital data in connection with the object.

REFERENCES:
patent: 4748468 (1988-05-01), Fujino et al.
patent: 5486914 (1996-01-01), Denove et al.
patent: 5678079 (1997-10-01), Ogawa
patent: 6509963 (2003-01-01), Oda et al.
patent: 6714293 (2004-03-01), Goto et al.
patent: 05-056343 (1993-03-01), None
patent: 06-281994 (1994-10-01), None
patent: 11-355785 (1999-12-01), None
patent: 2000-069327 (2000-03-01), None

Affiliated with

Also associated with

Rating

Photometric apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3369202