The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 19, 2013
Filed:
Feb. 25, 2011
Steffen Skaug, Oslo, NO;
Steffen Skaug, Oslo, NO;
Aptina Imaging Corporation, George Town, KY;
Abstract
An electronic device may have an image sensor for capturing digital image data of a scene. The image sensor may have an array of image sensor pixels. The image sensor pixels may have photosensitive elements for capturing image data signals. The image data signal from each photosensitive element may be conveyed to an output line associated with a column of the array using a source-follower transistor. The source-follower transistors may be provided with a current bias using current source coupled to each output line. The current source may include a configurable current source transistor that has multiple branches that can be selectively switched into use to adjust transconductance and drain saturation voltage characteristics for the current source. Gate structures in the configurable current source transistor may be supplied with a reference voltage from an adjustable voltage reference circuit.