Optical reader device, tag for use on a disposable or replaceable component, optical data validation system and method for optical data validation

• US 9,940,495 B2
• Filed: 11/01/2016
• Issued: 04/10/2018
• Est. Priority Date: 11/06/2015
• Status: Active Grant

• Current Assignee: ams AG (Ams-Osram AG)
• Original Assignee: ams AG (Ams-Osram AG)
• Inventors: Brown, Norwood, Nohovig, Kevin, Lester, Nathan
• Primary Examiner(s): WALSH, DANIEL I
• Application Number:
  US15/340,865
• Publication Number:
  US 20170132440A1
• Time in Patent Office: 525 Days
• CPC Class Codes: G06F 2218/08 Feature extraction
• CPC Class Codes: G06K 19/14 the marking being sensed by radiation
• CPC Class Codes: G06K 19/16 the marking being a hologram or diffraction grating
• CPC Class Codes: G06K 7/10544 by scanning of the records by radiation in the optical part of the electromagnetic spectrum
• CPC Class Codes: G06K 7/10564 Light sources
• CPC Class Codes: G06K 7/12 using a selected wavelength, e.g. to sense red marks and ignore blue marks

Abstract

The presented principles relate to an optical reader device, to a tag for use on a disposable or replaceable component, to an optical data validation system and to a method for optical data validation. The optical reader device comprises a sensor unit and a signal processing unit. In particular, the sensor unit comprises a light source and an optical sensor arrangement. The light source comprises at least one light emitting component and is arranged for emitting light. The optical sensor arrangement is arranged for generating a first sensor signal indicative of light emitted from the light source and reflected back from a code marking of a tag to be placed in front of the light source in a determined distance. The optical sensor is further arranged for generating a second sensor signal indicative of light emitted by a photo-responsive taggant of the tag after being excited by the light emitted from the light source. The signal processing unit comprises a signal processing unit being arranged to process the first sensor signal and the second sensor signal.

Claims

1. An optical genuine article validation and optical discrimination system, comprising:

an optical reader device comprising;

a sensor unit, and

a signal processing unit,

wherein the sensor unit comprises a light source and an optical sensor arrangement,

wherein the light source comprises at least one light emitting component and is arranged for emitting light,

wherein the optical sensor arrangement is arranged for generating a first sensor signal indicative of light emitted from the light source and reflected back from a code marking of a tag to be placed in front of the light source in a determined distance, the first sensor signal corresponding to grayscale assessment of data content,

wherein the optical sensor arrangement is further arranged for generating a second sensor signal indicative of light emitted by a photo-responsive taggant of the tag after being excited by the light emitted from the light source,

wherein assessment of the photo-responsive taggant and the grayscale assessment are implemented in a single integrated circuit, and

wherein the signal processing unit is arranged to process the first sensor signal and the second sensor signal; and

a tag for use on a disposable or replaceable component, the tag comprising a carrier surface having a first label section and a second label section, wherein

the first label section comprises a code marking being representative of encoded data to be decoded by means of the optical reader device,

the code marking comprises a pattern based on a light reflecting material,

the pattern comprises at least a first and a second scaling level to represent the encoded data and comprising different amounts of the light reflecting material to determine distinct levels of reflectivity, respectively, and

the second label section comprises at least one photo-responsive taggant to be excited by means of the optical reader device,

wherein the signal processing unit is arranged to decode the encoded data from the first sensor signal, and

wherein the signal processing unit is arranged to provide an authenticity validation information from the second sensor signal.

2. The optical genuine article validation and optical discrimination system according to claim 1, wherein the optical sensor arrangement comprises:

a first optical sensor with a single output reference or with multiple output references for providing the first sensor signal and the second sensor signal, respectively, or

at least the first and a second optical sensors each with a single output reference or with multiple output references for providing the first sensor signal and the second sensor signal, respectively.

3. The optical genuine article validation and optical discrimination system according to claim 2, wherein the second optical sensor comprises a color sensor and the first optical sensor comprises a proximity sensor, the color sensor and the proximity sensor being implemented in the single integrated circuit.

4. The optical genuine article validation and optical discrimination system according to claim 2, wherein the sensor unit and the signal processing unit are electrically inter-connected and are mounted to a printed circuit board incorporated into a housing, and

wherein the light source, the first optical sensor and the second optical sensor are separated by an optical light barrier such that light emitted by the light source is at least partly blocked from directly reaching the first optical sensor and the second optical sensor.

5. The optical genuine article validation and optical discrimination system according to claim 2, wherein the first optical sensor and the second optical sensor are integrated in a first and a second integrated circuit, respectively, or the first optical sensor and the second optical sensor are integrated into a single, common integrated circuit.

6. The optical genuine article validation and optical discrimination system according to claim 1, wherein the light source comprises the at least one light emitting component and a further light emitting component;

in particular, designed as light emitting diodes,

wherein an emission wavelength of the at least one light emitting component is arranged such that light striking the code marking of the tag is at least partly reflected, and

wherein an emission wavelength of the further light emitting component is arranged such as to excite the photo-responsive taggant of the tag.

7. The optical genuine article validation and optical discrimination system according to claim 1, wherein the signal processing unit comprises a micro-controller, a logic engine, a processing engine and/or an application-specific integrated circuit.

8. The optical genuine article validation and optical discrimination system according to claim 1,

wherein the at least first and second scaling levels of the code marking represent the encoded data as grayscale encoded data, and

wherein assessment of the at least one photo-responsive taggant and grayscale assessment are implemented in a single integrated circuit.

9. The optical genuine article validation and optical discrimination system according to claim 1, wherein the first label section and the second label section are printed onto or attached to the disposable or replaceable component.

10. The optical genuine article validation and optical discrimination system according to claim 1, wherein the light reflecting material comprises at least one of the following components:

a dye,

a colloid,

an ink, in particular, a fluorescent ink, a security ink, a liquid ink, a solid ink, a thermally-bonded ink, or a dual ink,

one or more pigments,

one or more nanoparticles,

one or more quantum dots,

a paint,

a film, and/or

a mixture thereof.

11. The optical genuine article validation and optical discrimination system according to claim 1, wherein the light reflecting material comprises the at least one photo-responsive taggant.

12. The optical genuine article validation and optical discrimination system according to claim 1, wherein the tag is comprised by a product label deposited on or printed onto the disposable or replaceable component, and

wherein the first label section and/or the second label section are either separate sections of the product label or are comprised by a label-art section.

13. The optical genuine article validation and optical discrimination system according to claim 1, wherein the code marking is representative of encoded data, comprises at least one scaling level to represent the encoded data, and comprises different amounts of light reflecting material to determine distinct levels of reflectivity, respectively.

14. A method for optical data validation, comprising the steps of:

placing a tag of a disposable or replaceable component into a determined distance with respect to at least one light emitting component of an optical reader device, the optical reader device comprising the at least one light emitting component, an optical sensor arrangement and a signal processing unit;

emitting light from the at least one light emitting component onto the tag;

generating a first sensor signal by means of the optical sensor arrangement depending on an amount of the light reflected back from a code marking of the tag, the first sensor signal corresponding to grayscale assessment of data content;

generating a second sensor signal by means of the optical sensor arrangement depending on an amount of light emitted by a photo-responsive taggant of the tag after being excited by the light emitted from the at least one light emitting component; and

processing the first sensor signal and the second sensor signal by means of the signal processing unit arranged in the optical reader device,

wherein assessment of the photo-responsive taggant and the grayscale assessment are implemented in a single integrated circuit.

15. A method according to claim 14, wherein the processing comprises:

decoding encoded data from first sensor signal, wherein the data is encoded by means of the code marking of the tag, in particular, by means of a gray-scaling pattern of code marking; and

providing an authenticity validation information from the second sensor signal.