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:
Jun. 21, 2016
Filed:
Jan. 11, 2012
Björn Kempén, Bromma, SE;
Björn Kempén, Bromma, SE;
Google Inc., Mountain View, CA (US);
Abstract
Described herein are devices and techniques for automatically determining in a presence-enabled messaging service, the presence status of at least one subscriber identified in a user's list of user contacts, and for filtering subsequent transmission of related network messages (packets) responsive to each user contact's presence status. In preparation for the real-time text exchange between such messaging (e.g., IM or chat) subscribers, an initializing user requests presence status for all user contacts. An association of presence status formed in response to replies to the user probe. Such associations can be stored as a data structure, such as a Bloom filter, a hash table, a list, or the like. Subsequent presence messages (e.g., broadcasts, probes) from the initialized user are filtered, in response to the associated contact status. For example, subsequent presence messages are only sent to those user contacts believed to be online.