Orientation-indicating machine readable coded data

Details Orientation-indicating machine readable coded data Orientation-indicating machine readable coded data

2005-08-16

2005-08-16

Le, Thien M. (Department: 2876)

Registers

Records

Particular code pattern

C235S462040, C235S462380

Reexamination Certificate

active

06929186

ABSTRACT:
Machine-readable coded data disposed on or in a substrate. The coded data includes a layout having order n rotational symmetry, formed from n identical sub-layouts rotated 1
revolutions apart about a center of rotation. The layout encodes a first codeword formed from a sequence of a multiple m of n first symbols, with each sub-layout defining respective positions for each of m first symbols, such that the m first symbols uniquely identify each sub-layout. Decoding the first symbols provided at one or more of the respective locations within each sub-layout is therefore indicative of the degree of rotation of the layout.

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