Skype Limited

Jill Tolan

Liz Rice

Tauri Tuubel

Teet Konnussaar

Stuart John

A method of determining an overall presence state for a user of a communication system in which the user is connected to the communication system using a plurality of devices. The method includes each of the plurality of devices storing in a device memory a presence state for that device; detecting a change in the presence state in at least one of the plurality of devices; each of the plurality of devices transmitting a message via the communication system to the remainder of the plurality of devices, the message comprising the presence state; receiving the messages at the remainder of the plurality of devices; and executing a decision-making code sequence in a processor at each of the remainder of the plurality of devices to determine whether to synchronize the presence state of that device with the presence state from one of the messages based on the origin of an event causing the change in presence state at the at least one of the plurality of devices.

Detection of communication states

A method of determining an overall presence state for a user of a communication system in which the user is connected to the communication system using a plurality of devices. The method includes each of the plurality of devices storing in a device memory a presence state for that device; detecting a change in the presence state in at least one of the plurality of devices; each of the plurality of devices transmitting a message via the communication system to the remainder of the plurality of devices, the message comprising the presence state; receiving the messages at the remainder of the plurality of devices; and executing a decision-making code sequence in a processor at each of the remainder of the plurality of devices to determine whether to synchronise the presence state of that device with the presence state from one of the messages based on the origin of an event causing the change in presence state at the at least one of the plurality of devices.

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Hertfordshire, United Kingdom

Jill Tolan