Patent · US Expired

Dot adjacency compensation in optical storage systems using ink dots

US6665454B1 · kind B1 · utility

129Cited by

9References

2Claims

0Family size

Assignee

Silverbrook Research Pty Ltd · AU

Inventors

Kia Silverbrook · Sydney, AU
Simon Robert Walmsley · Sydney, AU

Key dates

Filing date	Jul 10, 1998
Grant date	Dec 16, 2003
Priority date	—
Expiry date	Jul 10, 2018

Classification

Technology area (CPC G)Physics
CPC primaryG06F2221/2129
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method of accurately detecting the value of a dot of sensed image data, said image data comprising an array of dots and said sensed image data comprising a sampling of said image data at a rate greater than the pitch frequency of said array of dots so as to produce an array of pixels, said method comprising the steps of:determining an expected middle pixel of said array of pixels, said middle pixel corresponding to an expected central location of a corresponding dot;utilizing the sensed value of said middle pixel and the sensed value of a number of adjacent pixels as an index to a lookup table having an output corresponding to the value of a dot centred around the corresponding location of said pixel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.