公开(公告)号：US20170214869A1

公开(公告)日：2017-07-27

申请号：US15328207

申请日：2015-07-23

Applicant: Rambus Inc.

Inventor： John LADD ,  Michael GUIDASH ,  Craig M. SMITH ,  Thomas VOGELSANG ,  Jay ENDSLEY ,  Michael T. CHING ,  James E. HARRIS

IPC: H04N5/357 ,  H04N5/369 ,  H04N5/378 ,  H04N5/365

CPC classification number: H04N5/3655 ,  H04N5/355 ,  H04N5/357 ,  H04N5/3575 ,  H04N5/3651 ,  H04N5/3698 ,  H04N5/3745 ,  H04N5/37455 ,  H04N5/378

Abstract: A sequence of control voltage levels are applied to a control signal line capacitively coupled to a floating diffusion node of a pixel to sequentially adjust a voltage level of the floating diffusion node. A pixel output signal representative of the voltage level of the floating diffusion node is compared with a reference voltage to identify a first control voltage level of the sequence of control voltage levels for which the voltage level of the floating diffusion node exceeds the reference voltage.

公开(公告)号：US20170208272A1

公开(公告)日：2017-07-20

申请号：US15313029

申请日：2015-06-03

Applicant: RAMBUS INC.

Inventor： Michael GUIDASH ,  John LADD

IPC: H04N5/357 ,  H04N5/378 ,  H04N5/363 ,  H01L27/146

Abstract: A pixel circuit within an integrated-circuit image sensor includes a photodiode having a pinning layer of a first conductivity type, a floating diffusion node and a transfer gate disposed between the photodiode and the floating diffusion node. A first control input is coupled to the transfer gate, and a second control input is coupled to the pinning layer of the photodiode to enable the depletion potential of the photodiode to be raised and lowered.