US 12,314,808 B2
Unidirectional transfer of data from sender to receiver
Erno Hermanus Antonius Langendijk, Eindhoven (NL); Philip Spannring, Eindhoven (NL); and Jurjen Caarls, Eindhoven (NL)
Assigned to LIVEDROP B.V., Eindhoven (NL)
Filed by LiveDrop B.V., Eindhoven (NL)
Filed on Jan. 26, 2024, as Appl. No. 18/424,198.
Claims priority of application No. 23153880 (EP), filed on Jan. 30, 2023.
Prior Publication US 2024/0256803 A1, Aug. 1, 2024
Int. Cl. G06K 7/14 (2006.01); G06K 7/10 (2006.01); G06K 19/06 (2006.01)
CPC G06K 7/10722 (2013.01) [G06K 7/1417 (2013.01); G06K 19/06037 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A computer-implemented method for unidirectional transfer of data from a sender device to a receiver device, wherein the sender device is configured to encode respective parts of the data to be transmitted as respective 2D barcodes and sequentially display the 2D barcodes on a display, wherein the method comprises, at the receiver device:
using an image sensor, capturing the sequentially displayed 2D barcodes to obtain a series of captured images;
and in each or a subset of the series of captured images:
detecting a position of a respective 2D barcode in a respective captured image, wherein detecting the position comprises searching in a search area in the captured image for a position of at least one spatial marker of the 2D barcode and determining the position of the 2D barcode based on the position of the at least one spatial marker;
scanning the 2D barcode at the detected position to obtain barcode data;
decoding the barcode data to, together with the barcode data obtained from other captured images, obtain a received version of the transmitted data;
wherein detecting the position of the 2D barcode comprises determining a degree of apparent motion of the 2D barcode in the series of captured images and determining a size and/or position of the search area based on the degree of apparent motion.