A new patent surfaced over the web by egami, although I don’t know Japanese, but what I get from translated text is that to eliminate noise the camera will detect first detect the fixed pattern noise by garbing two images simultaneously (both shots will be captured at different exposure) and the camera will apply a new noise reduction algo to give a prefect output , translated text below and link of the website at the end…
Patent Publication No. 2014-230121
Published 2014.12.8
Filing date 2013.5.23
Dark arithmetic
Imaging element white point change by exposure time and temperature (FPN: fixed pattern noise) to output
Usually by subtracting the amount of signal obtained by the light blocking taken to correct the white point (fixed pattern noise)
Olympus patents
After performing the normal shooting, shooting an image that has been Boca
When a fixed pattern noise candidates of the first image, fixed pattern noise candidates of the second image match, it is regarded as a fixed pattern noise for correcting the
Imaging element unnecessary blackout of
src – egami
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