Alignment of antennas on near field communication devices for communication

Patent metadata

Field	Value
Publication number	US-11640582-B2
Application number	US-202016917746-A
Country	US
Kind code	B2
Filing date	Jun 30, 2020
Priority date	May 28, 2014
Publication date	May 2, 2023
Grant date	May 2, 2023

Abstract

A method for aligning NFC antennas on a mobile device and document. The method comprises determining the mobile device model identifier, associating the model identifier with a configuration, determining a model type and determining the document configuration in relation to its NFC components, selecting an feedback schema for aligning the NFC antennas based on the device and document configuration, generating alignment feedback according to the alignment feedback schema, detecting a data connection between the mobile device and the document and generating a connection indication. The determining the document type can be performed by reading a Machine Readable Zone. The feedback schema can be coupled with the mobile device's video camera and display, audio, and haptic feedback.

First claim

What is claimed is:

1. A computer-implemented method for aligning a mobile device and a document, the mobile device having an NFC antenna and a camera operative to capture images at a camera location, and the document having an NFC antenna, the method comprising:
determining a model identifier from the mobile device;
associating the model identifier with a device configuration from a source;
determining a document type;
associating the document type with a document configuration from the source;
discerning a location of the NFC antenna of the document from the document configuration;
extracting offset data based on the device configuration, the offset data representative of an offset, as viewed in a given plane, between the camera location and the NFC antenna of the mobile device;
identifying a document target based on the location of the NFC antenna of the document and the offset data;
selecting an alignment feedback schema;
generating alignment feedback from image processing of the document by the camera of the mobile device, the alignment feedback representative of the offset, as viewed in the given plane, between the camera location and the document target;
producing an alignment indication according to the selected alignment feedback schema and the generated alignment feedback, the alignment indication including user instruction for moving the mobile device relative to the document towards a position in which the camera location is aligned with the document target in a direction perpendicular to the given plane;
detecting for a data connection between the mobile device and the document; and
generating a connection indication when the data connection is detected.

2. The method of claim 1 , wherein the camera of the mobile device is operative to produce video from images captured by the camera, the document includes an MRZ (machine readable zone), and the determining the document type includes:
producing video of the MRZ with the camera; and
determining from the MRZ the document type.

3. The method of claim 1 , wherein the mobile device includes a display, the camera is operative to produce video from images captured by the camera and present the video on the display, the alignment feedback schema comprises display graphics, and the producing alignment indication includes:
producing an indication to position the camera over the mobile device such that the document is present in a field of view of the camera shown on the display;
displaying a video of the document on the display;
generating on the display, as overlaid on the video of the document that is being displayed, an image target graphic associated with the document target;
generating on the display, as overlaid on the video of the document that is being displayed, at least one alignment indicator graphic showing a direction to align the image target graphic and the NFC antenna of the document in the direction perpendicular to the given plane; and
producing user instruction to bring the mobile device in close proximity with the document.

4. The method of claim 3 , wherein the at least one alignment indicator graphic according to the alignment feedback schema includes a graphic on the display indicating a linear direction the mobile device is to move.

5. The method of claim 4 , wherein the at least one alignment indicator graphic includes a graphic on the display indicating a rotational direction the mobile device is to move.

6. The method of claim 1 , wherein the mobile device includes a display, the alignment feedback schema comprises audio signals, and the producing the alignment indication includes:
producing an indication to position the mobile device such that the document is present in a field of view of the camera shown on the display;
displaying video of the document on the display;
generating a first variable tone when the NFC antenna of the mobile device is getting closer to being in alignment with the NFC antenna of the document and a second variable tone when the NFC antenna of the mobile device is moving farther from being in alignment with the NFC antenna of the document; and
producing user instruction to bring the mobile device in close proximity with the document.

7. The method of claim 6 , wherein the first variable tone increases in pitch as the mobile device gets closer to alignment and the second variable tone decreases in pitch as the mobile device gets farther from alignment.

8. The method of claim 1 , wherein the mobile device includes a display, the alignment feedback schema comprises haptics, and the producing the alignment indication includes:
producing an indication to position the camera over the mobile device such that the document is present in a field of view of the camera shown on the display;
displaying video of the document on the display;
generating a first haptic feedback when the NFC antenna of the mobile device is getting closer to being in alignment with the NFC antenna of the document and a second haptic feedback when the NFC antenna of the mobile device is moving farther from being in alignment with the NFC antenna of the document; and
producing user instruction to bring the mobile device in close proximity with the document.

9. The method of claim 8 , wherein the haptics of the alignment feedback schema is periodic, and a frequency of the first haptic feedback increases as the mobile device gets closer to alignment and the frequency of the second haptic feedback decreases as the mobile device gets farther from alignment.

10. A mobile device operable to electronically communicate with a document having an NFC antenna, the mobile device comprising:
an NFC antenna;
a camera operative to capture images from a camera location;
a display operatively connected to the camera so as to display the images captured by the camera;
storage holding a device configuration associated with a model of the mobile device and a document configuration associated with a document type,
the device configuration including offset data representative of an offset, as viewed in a given plane, between the camera location and the NFC antenna of the mobile device, and
the document configuration including data of a location of an NFC antenna of a document based on its document type;
an alignment feedback schema generator; and
at least one processor operatively connected to the camera and operable to process the images captured by the camera and produce video from the images, operatively connected to the storage so as to retrieve data from the storage, and operatively connected to the alignment feedback schema generator to control output by the alignment feedback schema generator, the at least one processor configured to:
identify a document target based on the location of the NFC antenna of the document and the offset data,
generate alignment feedback from image processing of the document by the camera, the alignment feedback representative of the offset, as viewed in the given plane, between the camera location and the document target,
produce alignment indication to a selected alignment feedback schema and the generated alignment feedback, the alignment indication including user instruction for moving the mobile device relative to the document towards a position in which the camera location is aligned with the document target in a direction perpendicular to the given plane,
ascertain a data connection between the mobile device and the document, and
issue a command for producing a connection indication when the data connection is ascertained.

11. The device of claim 10 ,
wherein the at least one processor is operative to process an image of an MRZ (machine readable zone) of a

Assignees

• Mitek Systems Inc

Inventors

• Singal Ashok
• Treitler James
• Gupta Sanjay
• Ramsbacker Michael
• Gray Jason L
• Hagen Michael

Classifications

• G06K7/10009

  sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves · CPC title

• G06K7/10386

  the interrogation device being of the portable or hand-handheld type, e.g. incorporated in ubiquitous hand-held devices such as PDA or mobile phone, or in the form of a portable dedicated RFID reader · CPC title

• G06Q10/10 Primary

  Office automation; Time management · CPC title

• G06Q50/00

  Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism (healthcare informatics G16H) · CPC title