Combined multi-frequency electromagnetic and optical communication system
First Claim
Patent Images
1. An electromagnetically readable bar code, comprising:
- a series of bars and spaces forming a bar code such that the bar code is optically readable by a bar code reader to determine information optically encoded by the bar code; and
a first resonant structure embedded within at least one bar of the bar code such that the first resonant structure resonates in response to a first frequency; and
a second resonant structure embedded within at least one bar of the bar code such that the second resonant structure resonates in response to a second frequency which is different than said first frequency, wherein the bar code is split into at least first and second sections along a line of symmetry, and wherein the first resonant structure is embedded within at least one bar of the bar code in the first section and wherein the second resonant structure is embedded within at least one bar of the bar code in the second section.
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Abstract
A communication system is provided that includes both an electromagnetic (“EM”) communication device and an optical communication device including at least a machine readable symbol where at least a portion of the EM communication device and at least a portion of the machine readable symbol are formed from the same material. This material may be, for example, a conductable ink or a conductable foil. If desired, the EM communication device may include an antenna where at least a portion of the antenna includes at least a portion of the machine readable symbol.
58 Citations
33 Claims
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1. An electromagnetically readable bar code, comprising:
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a series of bars and spaces forming a bar code such that the bar code is optically readable by a bar code reader to determine information optically encoded by the bar code; and a first resonant structure embedded within at least one bar of the bar code such that the first resonant structure resonates in response to a first frequency; and a second resonant structure embedded within at least one bar of the bar code such that the second resonant structure resonates in response to a second frequency which is different than said first frequency, wherein the bar code is split into at least first and second sections along a line of symmetry, and wherein the first resonant structure is embedded within at least one bar of the bar code in the first section and wherein the second resonant structure is embedded within at least one bar of the bar code in the second section. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electromagnetically readable bar code comprising:
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a series of bars and spaces forming a bar code such that the bar code is optically readable by a bar code reader to determine information optically encoded by the bar code; and a first resonant structure embedded within at least two bars of the bar code which are electrically connected to each other such that the first resonant structure resonates in response to a first frequency; and a second resonant structure embedded within at least one bar of the bar code such that the second resonant structure resonates in response to a second frequency which is different than said first frequency. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of forming a multi-frequency bar code, comprising:
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printing a first resonant structure to be embedded within at least one bar of the bar code such that the first resonant structure resonates in response to a first frequency; and printing a second resonant structure to be embedded within at least one bar of the bar code such that the second resonant structure resonates in response to a second frequency which is different than said first frequency, wherein the bar code is split into at least first and second sections along a line of symmetry, and wherein the first resonant structure is embedded within at least one bar of the bar code in the first section and wherein the second resonant structure is embedded within at least one bar of the bar code in the second section. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. An electromagnetically readable bar code, comprising:
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a series of bars and spaces forming a bar code such that the bar code is optically readable by a bar code reader to determine information optically encoded by the bar code; and a first resonant structure embedded within at least one bar of the bar code such that the first resonant structure resonates in response to a first frequency; and a second resonant structure embedded within at least one bar of the bar code such that the second resonant structure resonates in response to a second frequency which is different than said first frequency, wherein the first and second resonant structures are included within the same bar. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of forming a multi-frequency bar code, comprising:
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printing a first resonant structure to be embedded within at least one bar of the bar code such that the first resonant structure resonates in response to a first frequency; and printing a second resonant structure to be embedded within at least one bar of the bar code such that the second resonant structure resonates in response to a second frequency which is different than said first frequency, wherein the first and second resonant structures are included within the same bar.
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Specification