US 2010/0147940 A1 · System For Decoding Coded Data With PLL

Abstract

A system for decoding coded data printed in ink on a surface is provided. The coded data has a registration structure which has at least two clock tracks indicative of a position of the coded data in the direction perpendicular to an alignment direction and two alignment lines for each clock track. The two alignment lines are indicative of the position of the respective clock track. The system has a decoder for determining, using an alignment phase-locked loop (PLL), a position of the alignment lines for a respective clock track, determining, using the position of the alignment lines, the position of each respective track, and updating the alignment PLL.

Claims5

Dependent claims

A system for decoding coded data printed in ink on a surface, the coded data having a registration structure, the registration structure having at least two clock tracks indicative of a position of the coded data in the direction perpendicular to an alignment direction and two alignment lines for each clock track, the two alignment lines being indicative of the position of the respective clock track, the system comprising a decoder for:

determining, using an alignment phase-locked loop (PLL), a position of the alignment lines for a respective clock track;
determining, using the position of the alignment lines, the position of each respective track;
and
updating the alignment PLL.

1 more element

Dependencies are inferred from the claim text.

Family