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:
Jun. 10, 2014
Filed:
Feb. 27, 2013
Himax Imaging Limited, Tainan, TW;
Chin-Min Liu, Tainan, TW;
Ching-Fong Chen, Tainan, TW;
Himax Imaging Limited, Tainan, TW;
Abstract
A digital camera and an image sensor readout method with black level calibration are disclosed. In a readout circuit of the digital camera, a black reference for black level calibration and an analog-to-digital conversion reference voltage for analog-to-digital conversion are generated from reference voltages provided by one voltage ladder. Device-to-device variations of sensor characteristics are considered when selecting the reference voltage for generating the black reference, and, a gain between the selected reference voltage and the black reference varies with a gain of a programmable gain amplifier coupled after a compensator. The compensator subtracts the black reference from a sensed signal that the readout circuit receives from an image sensor of the digital camera.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile