Optically trackable tag

Details Optically trackable tag Optically trackable tag

2011-03-29

2011-03-29

Le, Thien M. (Department: 2887)

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Particular code pattern

C235S487000

Reexamination Certificate

active

07913921

ABSTRACT:
The tracking of a motion of an optically readable tag is disclosed. In one embodiment, an optically readable tag comprises a plurality of data features, one or more orientation features, and an optically readable tracking feature. The tracking feature comprises a continuous region with a minimum dimension greater than a maximum dimension of each data feature. Additionally, the data features and the orientation features are separated from the tracking feature by a border having a minimum width greater than a maximum dimension of each data feature. With this configuration, the tracking feature may be tracked even when a tag is moving too quickly for the data features to be read and tracked.

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