초록

A hand held bar code scanning device includes scanning circuitry to conduct bar code scanning and a manually actuated optical trigger switch, connected to the scanning circuitry, to initiate bar code scanning.

대표청구항 ▼

A hand-held code reading device having a scanning circuitry for scanning codes, comprising: a housing having a portion adapted to be hand held by an operator; a light source for generating a light beam; an optical waveguide for directing the light beam along a first light path external to the housin

A hand-held code reading device having a scanning circuitry for scanning codes, comprising: a housing having a portion adapted to be hand held by an operator; a light source for generating a light beam; an optical waveguide for directing the light beam along a first light path external to the housing; an optical switching device located along the first light path and arranged to receive the light beam, and adapted to be selectively activated by a first portion of the hand holding the reading device; a light intercepting means located adjacent the first light path for intercepting and diverting the light beam to a second path that is different from the first path; a power switch on the housing, adapted to be turned on with a second portion of the hand holding the reading device; and a circuitry for initiating a scanning operation, wherein the initiating circuitry initiates the scanning operation when the first portion of the hand holding the reading device touches or presses the power switch and the second portion of the hand holding the reading device touches or presses the light intercepting means, whereupon the light beam is diverted to the second path so that the optical switching device receives only a portion of the light beam, and wherein the circuitry disables the scanning operation when either the first hand portion is released from the light intercepting means or the second hand portion is released from the power switch.