Systems and methods for reading indicium
First Claim
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1. A system for detecting indicium, the indicium comprising a first element having a first emissivity value and a second element having a second emissivity value different from the first emissivity value, the system comprising:
- an electromagnetic energy source that provides energy to affect a relative temperature of the indicium; and
a sensor that detects differential emissivity values based at least partially on the first emissivity value of the indicium and the second emissivity value of the indicium, wherein;
the indicium resides on a conductive layer; and
the electromagnetic energy source affects the relative temperature of the indicium by increasing a temperature of the conductive layer.
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Abstract
Detection systems that detect and decode machine-readable information and other indicia having varying spectral emissivity values are provided. The detection systems include a sensor, circuitry, and temperature influencing mechanism. The system may be connected to other hardware, such as a computer display screen, or audio emitting device. Meanwhile, the sensor detects differential emissivity values by measuring energy emitted from the targets of interest.
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Citations
36 Claims
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1. A system for detecting indicium, the indicium comprising a first element having a first emissivity value and a second element having a second emissivity value different from the first emissivity value, the system comprising:
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an electromagnetic energy source that provides energy to affect a relative temperature of the indicium; and a sensor that detects differential emissivity values based at least partially on the first emissivity value of the indicium and the second emissivity value of the indicium, wherein; the indicium resides on a conductive layer; and the electromagnetic energy source affects the relative temperature of the indicium by increasing a temperature of the conductive layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for detecting indicium, the indicium comprising a first element having a first emissivity value and a second element having a second emissivity value different from the first emissivity value, the system comprising:
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an electromagnetic energy source that provides energy to affect a relative temperature of the indicium; and a sensor that detects differential emissivity values based at least partially on the first emissivity value of the indicium and the second emissivity value of the indicium, wherein the electromagnetic energy source is a magnet in motion.
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13. A system for detecting indicium, the indicium comprising a first element having a first emissivity value and a second element having a second emissivity value different from the first emissivity value, the system comprising:
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an electromagnetic energy source that provides energy to affect a relative temperature of the indicium; and a sensor that detects differential emissivity values based at least partially on the first emissivity value of the indicium and the second emissivity value of the indicium, wherein; the indicium comprises high solids content ink; and the electromagnetic energy source affects the relative temperature of the indicium by inducing an electrical current in the ink. - View Dependent Claims (14)
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15. A system for detecting indicium, the indicium comprising a first element having a first emissivity value and a second element having a second emissivity value different from the first emissivity value, the system comprising:
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an electromagnetic energy source that provides energy to affect a relative temperature of the indicium; and a sensor that detects differential emissivity values based at least partially on the first emissivity value of the indicium and the second emissivity value of the indicium, wherein; the indicium comprises high solids content ink; the electromagnetic energy source affects the relative temperature of the indicium by increasing a temperature of the high solids content ink; and the high solids content ink results in a high density of conductors in the indicium. - View Dependent Claims (16)
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17. A method for detecting energy emitted by an indicium, the indicium comprising a first element having a first emissivity value and a second element having a second emissivity value different from the first emissivity value, the method comprising:
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providing electromagnetic energy to affect a relative temperature of the indicium; and detecting a differential emissivity value based at least partially on the first emissivity value of the indicium and the second emissivity value of the indicium, wherein; the indicium resides on a conductive layer; and the providing comprises increasing a temperature of the conductive layer. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method for detecting energy emitted by an indicium, the indicium comprising a first element having a first emissivity value and a second element having a second emissivity value different from the first emissivity value, the method comprising:
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providing electromagnetic energy to affect a relative temperature of the indicium; and detecting a differential emissivity value based at least partially on the first emissivity value of the indicium and the second emissivity value of the indicium, wherein; the indicium comprises high solids content ink; and the providing comprises increasing a temperature of the high solids content ink by inducing an electrical current in the ink. - View Dependent Claims (29)
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30. A method for detecting energy emitted by an indicium, the indicium comprising a first element having a first emissivity value and a second element having a second emissivity value different from the first emissivity value, the method comprising:
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providing electromagnetic energy to affect a relative temperature of the indicium; and detecting a differential emissivity value based at least partially on the first emissivity value of the indicium and the second emissivity value of the indicium, wherein; the indicium comprises high solids content ink; the providing comprises increasing a temperature of the high solids content ink; and the high solids content ink results in a high density of conductors in the indicium. - View Dependent Claims (31)
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32. A method for detecting energy emitted by an indicium, the indicium comprising at least one emissivity value and residing on a conductive layer, the method comprising:
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providing electromagnetic energy to affect a relative temperature of the indicium by increasing a temperature of the conductive layer; detecting when the relative temperature of the indicium is a substantially constant value; and in response to detecting that the relative temperature of the indicium is a substantially constant value, detecting a differential emissivity value based at least partially on the at least one emissivity value of the indicium. - View Dependent Claims (33, 34, 35, 36)
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Specification