Sensor control of an aiming beam of an automatic data collection device, such as a barcode reader
First Claim
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1. An automatic data collection device to read data carriers such as machine-readable symbols, the automatic data collection device comprising:
- a first light source to generate an aiming beam that can be directed at a target machine-readable symbol;
a second light source to generate an acquisition beam to read data encoded in the target machine-readable symbol;
a sensor to receive at least a portion light reflected from the target machine-readable symbol and to generate a sensor signal that is associated with the received light; and
a component coupled to the sensor to deactivate the aiming beam, based on the sensor signal generated by the sensor, prior to reading the target machine-readable symbol with the acquisition beam.
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Abstract
An automatic data collection device is provided with an aiming beam that can be deactivated prior to reading a target machine-readable symbol. The data collection device includes a sensor that generates one or more signals associated with light received by the sensor. The sensor signal(s) is used to adjust the illumination levels for the sensor and/or the gain of the sensor, and are also used to deactivate the aiming beam prior to reading the target machine-readable symbol or to perform other illumination adjustment.
57 Citations
25 Claims
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1. An automatic data collection device to read data carriers such as machine-readable symbols, the automatic data collection device comprising:
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a first light source to generate an aiming beam that can be directed at a target machine-readable symbol;
a second light source to generate an acquisition beam to read data encoded in the target machine-readable symbol;
a sensor to receive at least a portion light reflected from the target machine-readable symbol and to generate a sensor signal that is associated with the received light; and
a component coupled to the sensor to deactivate the aiming beam, based on the sensor signal generated by the sensor, prior to reading the target machine-readable symbol with the acquisition beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method usable for an automatic data collection device that can read machine-readable symbols, the method comprising:
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generating a user-perceptible aiming beam that can be directed at a target machine-readable symbol;
determining an amount of light reflected from the target machine-readable symbol and received by a detector of the automatic data collection device;
generating a detector signal representative of the light received by the detector;
using the generated detector signal to adjust an illumination condition of the detector; and
using the generated detector signal to deactivate the aiming beam prior to reading the target machine-readable symbol. - View Dependent Claims (11, 12, 13, 14)
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15. An automatic data collection system for reading machine-readable symbols, the automatic data collection system comprising:
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means for generating a user-perceptible aiming beam that can be directed at a target machine-readable symbol;
means for receiving light reflected from the target machine-readable symbol;
means for generating a signal representative of the received light; and
means for adjusting an illumination condition based on the generated signal. - View Dependent Claims (16, 17)
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18. An automatic data collection system for reading machine-readable symbols, the automatic data collection system comprising:
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means for generating a user-perceptible aiming beam that can be directed at a target machine-readable symbol;
means for receiving light reflected from the target machine-readable symbol;
means for generating a signal representative of the received light; and
means responsive to the generated signal for adjusting a gain of the means for receiving the reflected light.
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19. An automatic data collection system for reading machine-readable symbols, the automatic data collection system comprising:
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means for generating a user-perceptible aiming beam that can be directed at a target machine-readable symbol;
means for receiving light reflected from the target machine-readable symbol;
means for generating a signal representative of the received light; and
means responsive to the generated signal for deactivating the aiming beam prior to reading the target machine-readable symbol. - View Dependent Claims (20, 21)
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22. An article of manufacture, comprising:
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a machine-readable medium usable with an automatic data collection device to read machine-readable symbols and having instructions stored thereon to allow a processor to control operation of an aiming beam of the data collection device, by;
generating a user-perceptible aiming beam that can be directed at a-target machine-readable symbol;
determining an amount of light reflected from the target machine-readable symbol and received by a detector of the automatic data collection device;
generating a detector signal representative of the light received by the detector; and
using the generated detector signal to adjust an illumination condition of the detector. - View Dependent Claims (23, 24, 25)
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Specification