Inter-device data transfer based on barcodes

摘要

A sending computing device encodes data items as barcodes and simultaneously displays two or more barcodes on a first display screen of, or operatively coupled to, the sending computing device. A receiving computing device obtains the two or more barcodes from a single video frame captured by a first camera module of, or operatively coupled to, the receiving computing device. Furthermore, the receiving computing device encodes, as an acknowledgement barcode, an acknowledgement that identifies each barcode that was successfully received and displays the acknowledgement barcode on a second display screen of, or operatively coupled to, the receiving computing device. The sending computing device captures the acknowledgement barcode via a second camera module of, or operatively coupled to, the sending computing device. Based on the acknowledgement barcode, the sending computing device determines which of the data items were or were not successfully received by the receiving computing device.

主权项

1. A method, comprising:
at a sending computing device comprising one or more processors and memory storing one or more computer programs executed by the one or more processors to perform the method, performing operations comprising: encoding a plurality of data items as a plurality of barcodes; simultaneously displaying, to a receiving computing device, two or more barcodes of the plurality of barcodes on a display screen of, or operatively coupled to, the sending computing device; capturing an acknowledgement barcode via a camera module of, or operatively coupled to, the sending computing device, the acknowledgement barcode encoding one or more sequence numbers associated with one or more of the plurality of data items that were successfully received by the receiving computing device; and determining, based on the one or more sequence numbers encoded in the acknowledgement barcode, which of the plurality of data items were successfully received by the receiving computing device and which of the plurality of data items were not successfully received by the receiving computing device.