Method and system for negotiation of a parameter of an optical communication protocol between two devices
First Claim
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.
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Accused Products
Abstract
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.
11 Citations
10 Claims
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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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system comprising first and second devices, each device comprising a screen able to display images composed of pixels and a sensor able to take a picture of an image, said first and second devices being configured to communicate using an optical communication protocol,
wherein said first device comprises an initiator means configured to generate and to display 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, wherein said second device comprises a calibration means configured to analyze a calibration picture corresponding to the calibration image, to identify a set comprising at least one detectable pixel pattern which is properly recognizable by the second device and to select a setting data based on said set, wherein said second device comprises a negotiating means configured to generate and display a second calibration image comprising the setting data, and wherein said first device comprises a setting means configured to interpret a second calibration picture corresponding to said second calibration image, to get the setting data, to select a value based on the setting data and to update a parameter of the optical communication protocol with the value.
Specification