Patent ID: 11968468
Assignee: OMNIVISION TECHNOLOGIES, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 33:
34. The imaging system of claim 32, wherein the assist bias voltage generator comprises:
a second variable current source coupled to the logic circuit, wherein the second variable current source is configured to conduct a second variable current in response the digital assist voltage bias setting signal from the logic circuit;
a first current mirror transistor coupled between the power line and the second variable current source, wherein the second variable current is conducted through the first current mirror transistor;
a second current mirror transistor coupled to the power line, wherein a gate of the second current mirror transistor is coupled to a gate and a drain of the first current mirror transistor, wherein a mirrored second variable current is conducted through the second current mirror transistor; and
a replica assist current source coupled to the second current mirror transistor.