Browse Prior Art Database

AREA BRIGHTNESS AVERAGE THROUGH PHOTO-GATE CURRENT

IP.com Disclosure Number: IPCOM000024856D
Original Publication Date: 1982-Jun-30
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

There are several applications in the processing of video data from an imaging array such as a Charge Coupled Device (CCD) where an average signal value would be useful, i.e., Automatic Gain Control (AGC), automatic thresholding, etc. To date, several approaches have been used; namely, integrating elements which identify past occurrences only and time delay through memory elements which is expensive.