METHOD AND SYSTEM FOR NEGOTIATION OF A PARAMETER OF AN OPTICAL COMMUNICATION PROTOCOL BETWEEN TWO DEVICES

摘要

The invention is a method for negotiating a parameter of an optical communication protocol between two devices. One device displays a first calibration image comprising a series of pixel patterns having a predetermined position and different sizes. The other device takes a first calibration picture of the first calibration image, identifies a set comprising at least one detectable pixel pattern in the first calibration picture and selects a setting data based on the set. Then it displays a second calibration image comprising this setting data which is read by the first device via another calibration picture. The first device retrieves the setting data from the calibration picture, selects a value based on the setting data and updates the parameter with the selected value.

主权项

1. A method for negotiating a parameter of an optical communication protocol to be used between first and second devices,
wherein the method comprises the following steps:
said first device generates and displays a first calibration image comprising a series of pixel patterns, each of said pixel patterns having a predetermined position relative to the other pixel patterns and a size different from the size of the other pixel patterns of the series,said second device takes a first calibration picture of the first calibration image, analyses the first calibration picture, identifies a set comprising at least one detectable pixel pattern which is properly recognizable by the second device and selects a setting data based on said set,said second device generates and displays a second calibration image comprising the setting data,said first device takes a second calibration picture of the second calibration image, interprets the second calibration picture, gets the setting data, selects a value based on the setting data and updates the parameter with the value.