Image sensor including logarithmic converters

Details Image sensor including logarithmic converters Image sensor including logarithmic converters

1989-09-27

1990-11-27

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250214L, H01J 4014

Patent

active

049738330

ABSTRACT:
A photosensor, or an image sensor made of many such photosensors, including a plurality of photosensor pixels each having a logarithmic converter. The logarithmic converter converts source charges that are produced by a photoreceptor (or a photodiode) and proportional to the amount of the incident light into signal charges logarithmically proportional to the source charges whose amount does not grow so rapid as the amount of source charges grows. Owing to the logarithmic converter, the dynamic range of the photosensor (or image sensor) has a very wide dynamic range.

REFERENCES:
patent: 3574443 (1971-04-01), Nanba
patent: 3781119 (1973-12-01), Mori
patent: 3829865 (1974-08-01), Kamasako
patent: 3902812 (1975-09-01), Honkawa
patent: 4473836 (1984-09-01), Chamberlain
patent: 4584606 (1986-04-01), Nagasaki
patent: 4598414 (1986-07-01), Dries et al.
patent: 4742238 (1988-05-01), Sato

Affiliated with

Also associated with

Rating

Image sensor including logarithmic converters does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1033453