Ramp generators for imager analog-to-digital converters

USRE41767E1 · kind E1 · reissue

Assignee

• Aptina Imaging Corporation · KY

Inventor

• Yan Lee · Seoul, KR

Key dates

• Filing date: Mar 12, 2008
• Grant date: Sep 28, 2010
• Expiry date: Mar 12, 2028

Classification

• Technology area (CPC —): General

Abstract

An imager with an analog-to-digital converter having at least one ramp generator that precisely and efficiently produces the desired ramp voltages required by the analog-to-digital converter. The analog-to-digital converter can use differential or two ramp generators. The analog-to-digital converter can also use ramp generators operated in linear or compressed ramp modes.