Logarithmic response pixel for an imaging device
AssigneeSTMicroelectronics International N.V.
InventorArthur ARNAUD
Life of this patent
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Abstract
A logarithmic response pixel includes a photosensitive circuit element and at least one diode-connected bipolar junction transistor. The at least one diode-connected bipolar junction transistor has a base coupled to a first conduction node of the at least one diode-connected bipolar junction transistor. A second conduction node of the at least one diode-connected bipolar junction transistor is coupled to a node of the photosensitive circuit element.
Claims22
A logarithmic response pixel for an imaging device, the logarithmic response pixel including a photosensitive circuit element and at least one diode-connected bipolar junction transistor coupled to the photosensitive circuit element.
A method of operation of a pixel of an imaging device, comprising:
- in response to light excitation of a photosensitive circuit element, generating a logarithmic response of a diode-connected bipolar junction transistor coupled to the photosensitive circuit element.
Dependencies are inferred from the claim text.