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. 08, 1982
Filed:
Jul. 02, 1980
Paul E Franklin, London, GB;
Crosfield Electronics Limited, London, GB;
Abstract
The invention relates to methods and apparatus for interpolating between coarse stored data to achieve a more accurate answer, and is particularly applicable to color scanning reprographic equipment. Color scanners (5) analyze an original to obtain digital signals (8) representing three primary color intensities. The values for the intensities of each of four printing colors, including black, are functions of all three primary color intensities, and a limited quantity of these sets of four values is stored in a three dimensional matrix (25), consisting of cubes with values at their corners. To obtain values from these coarse stored data corresponding to a point (P) within a cube, an interpolator (26) determines which one, of the three pyramids (e.g. W B G C V in FIG. 2) comprising the cube, contains the point, and interpolates within that pyramid between the values at its five vertices.