Patent · US Active

Machine-readable code

US11501126B2 · kind B2 · utility

1Cited by

28References

20Claims

0Family size

Assignee

Spotify AB · SE

Inventors

Keenan Cassidy · Dublin, IE
Damian Ferrai · Stockholm, SE
Ludvig Strigeus · Gothenburg, SE
Mattias Svala · Gothenburg, SE
Nicklas Söderlind · Stockholm, SE
Jimmy Wahlberg · Stockholm, SE

Key dates

Filing date	Jan 20, 2021
Grant date	Nov 15, 2022
Priority date	—
Expiry date	Jan 20, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG06K19/06075
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Technology for generating, reading, and using machine-readable codes is disclosed. There is a method, performed by an image capture device, for reading and using the codes. The method includes obtaining an image, identifying an area in the image having a machine-readable code. The method also includes, within the image area, finding a predefined start marker defining a start point and a predefined stop marker defining a stop point, an axis being defined there between. A plurality of axis points can be defined along the axis. For each axis point, a first distance within the image area to a mark is determined. The distance can be measured from the axis point in a first direction which is orthogonal to the axis. The first distances can be converted to a binary code using Gray code such that each first distance encodes at least one bit of data in the code.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.