Automatically-activated hand-supportable multi-mode laser...

G - Physics – 06 – K

Patent

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G06K 7/10 (2006.01) G06K 9/22 (2006.01)

Patent

CA 2465892

A multi-mode laser-based bar code symbol reading device having a hand- supportable housing (161) with a light transmission aperture (168), A laser scanning engine (53 ") is controlled to selectively operate in either an omni- directional scanning mode, a rastered scanning mode, or a single line scanning mode. A manually-activatable data transmission switch (155) produces an activation signal in response to the manual-actuation of the data tranmission switch. A data transmission subsystem operates under control of control circuitry. The control circuitry enables communication of symbol character data in the single line or rastered scanning mode of operation to a host device in response to the activation signal produced by the data transmission switch, and the control circuitry enables communication of symbol character data in the omni-directional scanning mode of operation to the host device irrespective of the activation signal produced by the data transmission switch.

Cette invention a trait à un système de lecture de symboles de code à barres par laser multimode, possédant un boîtier à main (161) pourvu d'un orifice émetteur de lumière (168). Un moteur de balayage laser (53'') est commandé de manière à fonctionner sélectivement en mode omnidirectionnel, en mode tramé ou en mode ligne unique. Un commutateur pour transmission de données commandé à main (155) émet un signal d'excitation en réaction à l'activation manuelle du commutateur de transmission de données. Un sous-système de transmission de données fonctionne sous le commandement de circuits de commande. Ces circuits, qui permettent de communiquer des données de symboles de caractères, en mode ligne unique ou en mode tramé, à un dispositif hôte et ce, en réaction au signal d'excitation produit par le commutateur, permettent également de communiquer en mode omnidirectionnel, indépendamment du signal d'excitation produit par le commutateur de transmission de données.

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