| US 7,527,207 B2 | ||
| Triggering illumination for a data reader | ||
| Jorge L. Acosta, Eugene, Oreg. (US); and Mohamed A. Salam, Torrence, Calif. (US) | ||
| Assigned to Datalogic Scanning, Inc., Eugene, Oreg. (US) | ||
| Filed on Dec. 01, 2005, as Appl. No. 11/293,863. | ||
| Claims priority of provisional application 60/632696, filed on Dec. 01, 2004. | ||
| Prior Publication US 2006/0180670 A1, Aug. 17, 2006 | ||
| Int. Cl. G06K 7/10 (2006.01) | ||
| U.S. Cl. 235—462.31 [235/462.17] | 37 Claims |
| 1. A method of triggering a source of visible light for a data reader including an imaging reader having a scan zone, comprising:
illuminating at least a substantial portion of the scan zone with infrared illumination;
placing in the scan zone an item bearing an optical code symbol containing encoded data therein, thereby reflecting at least
a portion of the infrared illumination as reflected infrared illumination;
sensing the reflected infrared illumination via the imaging reader;
attempting to read the symbol and acquire the encoded data therein utilizing the sensed reflected infrared illumination;
in response to sensing the reflected infrared illumination, triggering a source of visible light and illuminating the scan
zone with the visible light thereby reflecting at least a portion of the visible light as reflected visible light;
sensing the reflected visible light via the imaging reader; and
reading the symbol via the imaging reader utilizing the sensed reflected visible light.
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