The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2015
Filed:
Dec. 28, 2007
Tauri Tuubel, Tallinn, EE;
Liz Rice, Enfield, GB;
Stuart John, Santa Monica, CA (US);
Teet Konnussaar, Tallinn, EE;
Jill Tolan, Hertfordshire, GB;
Tauri Tuubel, Tallinn, EE;
Liz Rice, Enfield, GB;
Stuart John, Santa Monica, CA (US);
Teet Konnussaar, Tallinn, EE;
Jill Tolan, Hertfordshire, GB;
Skype, Dublin, IE;
Abstract
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.