Tuesday, April 21, 2020

Caeleste Proposes "True Charge Domain Binning"

Caeleste patents a true charge domain binning method by making a number of pixels “non-collecting”. The photo charge that is not collected by these pixels is then collected by drift or diffusion by the other pixels in the kernel.

While other companies might call it blooming, Caeleste implements pixel binning in that same way:


  1. Nice idea !
    Two questions: 1) is there a possible image lag, since the charge captured by floating PD will be released with a logarithmic rate; 2) charge captured by the floating PD will be in a surface anti-blooming state, so is there a risk of non-linearity ?
    Thanks !

  2. actually we wondered ourselves. The "lag" problem is relaxed by enforcing a potential instead of letting it float. And indeed, lag must be avoided as lag often has non-linearity as side effect.


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