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US 7,730,797 B1Granted
Authenticating a package using noise level
AssigneeHewlett-Packard Development Company, L.P.
InventorsVinay Deolalikar, Salil Pradhan, Alipio Caban, Lester Ortiz, Geoff Lyon
Life of this patent
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Abstract
In a method of authenticating a package, an origin noise level of the package is determined based upon one or more identifying characteristics, where the origin noise level is a deviation from a normal condition caused by the one or more identifying characteristics. In addition, the package is authenticated based upon the origin noise level of the package.
Claims17
A method of authenticating a package to be authenticated, the method comprising:
- obtaining a first optical reading of an original package;
- measuring a normal signal level of the original package from the first optical reading;
- introducing one or more identifying characteristics onto the original package;
- obtaining a second optical reading of the original package and the one or more identifying characteristics;
- measuring a modified signal level of the original package from the second optical reading;
- determining a difference between the modified signal level and the normal signal level;
- determining an origin noise level of the original package, wherein the origin noise level comprises the difference between the modified signal level and the normal signal level;
- determining a noise level of a package to be authenticated;
- comparing the noise level of the package to be authenticated with the origin noise level;
- and
- indicating that the a package to be authenticated is authentic in response to the noise level of the package to be authenticated substantially equaling the origin noise level.
8 more elements
A method of determining an origin noise level for an original package, said method comprising:
- optically reading the original package to obtain a normal signal level;
- introducing one or more identifying characteristics onto the original package;
- optically reading the original package with the one or more identifying characteristics to obtain a modified signal level;
- determining a difference between the modified signal level and the normal signal level;
- determining an origin noise level of the original package, wherein the origin noise level comprises the difference between the modified signal level and the normal signal level;
- and
- storing the origin noise level.
4 more elements
A system for authenticating a package to be authenticated, said system comprising:
- an origin reading module configured to obtain a first optical reading of an original package without one or more identifying characteristics and to obtain a second optical reading of the original package with the one or more identifying characteristics, wherein the one or more identifying characteristics distinguish the original package from a normal package, and wherein the original package and the normal package appear identical except for the one or more identifying characteristics of the original package;
- an origin noise analysis module configured to determine an origin noise level associated with the original package based upon a difference between a signal level of the first optical reading and a signal level of the second optical reading;
- and
- an authentication module configured to authenticate the package to be authenticated based upon a comparison of noise level of the original package and a noise level of the package to be authenticated.
1 more element
A system for authenticating a package to be authenticated, said system comprising:
- means for obtaining a first optical reading of an original package;
- means for measuring a normal signal level of the original package from the first optical reading;
- means for introducing one or more identifying characteristics onto the original package;
- means for obtaining a second optical reading of the original package with the one or more identifying characteristics;
- means for measuring a modified signal level of the original package from the second optical reading;
- means for determining a difference between the modified signal level and the normal signal level;
- means for determining an origin noise level of the original package, wherein the origin noise level comprises the difference between the modified signal level and the normal signal level;
- means for determining a noise level of the package to be authenticated;
- and
- means for authenticating the package to be authenticated based upon a comparison of the noise level of the package to be authenticated and the origin noise level.
7 more elements
A computer program product embodied on a computer-readable medium and comprising code that, when executed, causes a computer to perform the following:
- obtain a first optical reading of an original package;
- measure a normal signal level of the original package from the first optical reading;
- introduce one or more identifying characteristics onto the original package;
- obtain a second optical reading of the original package and the one or more identifying characteristics;
- measure a modified signal level of the original package from the second optical reading;
- determine a difference between the modified signal level and the normal signal level;
- determine an origin noise level of the original package, wherein the origin noise level comprises the difference between the modified signal level and the normal signal level;
- determine a noise level of a package to be authenticated;
- and
- authenticate the package to be authenticated based upon a comparison of the noise level of the package to be authenticated and the origin noise level.
7 more elements
Dependencies are inferred from the claim text.