Method for increasing dynamic range of a pixel by multiple incomplete reset
First Claim
1. A method for obtaining a read-out signal of a pixel having at least a photosensitive element and a charge storage node, the method comprising the steps of while acquiring charge carriers on said charge storage node, said charge carriers being converted from radiation impinging on the photosensitive element:
- after a time period applying at least one reset pulse with a predetermined amplitude on said charge storage node, said pulse resetting incompletely the charge carriers acquired at the moment of applying said pulse thereby partially discharging the charge storage node; and
thereafterfurther acquiring charge carriers on said charge storage node.
8 Assignments
0 Petitions
Accused Products
Abstract
A method is disclosed for obtaining a read-out signal of a pixel having at least a photosensitive element with a charge storage node. Charge carriers are converted from radiation impinging on the photosensitive element. While acquiring charge carriers on said charge storage node, after a time period at least one reset pulse with a predetermined amplitude is applied on said charge storage node, said pulse resetting incompletely the charge carriers acquired at the moment of applying said pulse; and thereafter charge carriers are further acquired on said charge storage node.
43 Citations
13 Claims
-
1. A method for obtaining a read-out signal of a pixel having at least a photosensitive element and a charge storage node, the method comprising the steps of while acquiring charge carriers on said charge storage node, said charge carriers being converted from radiation impinging on the photosensitive element:
-
after a time period applying at least one reset pulse with a predetermined amplitude on said charge storage node, said pulse resetting incompletely the charge carriers acquired at the moment of applying said pulse thereby partially discharging the charge storage node; and
thereafterfurther acquiring charge carriers on said charge storage node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification