公开(公告)号：EP2359531A1

公开(公告)日：2011-08-24

申请号：EP09835434.3

申请日：2009-11-09

Applicant: Microsoft Corporation

Inventor： LEE, Ming-Chieh ,  HAN, Mu ,  MOORE, Tim

IPC: H04L12/18 ,  H04L12/56 ,  H04N7/15

CPC classification number: H04N7/15 ,  H04L12/1818 ,  H04L12/1877 ,  H04N7/147 ,  H04N21/42203 ,  H04N21/4223 ,  H04N21/440263 ,  H04N21/440281 ,  H04N21/4788 ,  H04N21/6332 ,  H04N21/6377 ,  H04N21/658

Abstract: Subscriptions in a video conference may be provided using multiple bit rate streams. A video conference server may receive video streams from each client in a video conference and may receive subscription requests from each client. The subscription requests may include requests to see video streams from specific other clients at a given resolution and/or frame rate. The video conference server may match up the received video streams with the subscription requests in order to send the subscribing clients their desired video streams. The server may also be able to request different versions of video streams from participants (e.g. different resolutions) and/or alter the video streams in order to better comply with the subscription request.

公开(公告)号：EP2524526A2

公开(公告)日：2012-11-21

申请号：EP11733197.5

申请日：2011-01-04

Applicant: Microsoft Corporation

Inventor： DONNELLY, Austin ,  ABOBA, Bernard ,  KUNTZ, Roy ,  MONTENEGRO, Gabriel ,  SINGH, Noor-E-Gagan ,  MOORE, Tim

IPC: H04W4/02 ,  H04W4/22 ,  H04L12/28 ,  H04L9/00

CPC classification number: H04L67/18 ,  H04L67/22 ,  H04L67/306 ,  H04M3/42348 ,  H04M3/5116 ,  H04M15/8033 ,  H04Q2213/13097 ,  H04Q2213/13098 ,  H04Q2213/13103 ,  H04Q2213/13141 ,  H04Q2213/1337

Abstract: Location of a communication network subscriber is determined employing confidence metrics such as remote vs. local computer usage, primary user in a multi-user computing environment, likelihood of forgery, and comparable ones. A fine-grained location determination is then made based on the metric results and directory information for the particular subscriber such that services like emergency services can be provided with accurate location information.

公开(公告)号：EP2055106A2

公开(公告)日：2009-05-06

申请号：EP07868329.9

申请日：2007-08-14

Applicant: Microsoft Corporation

Inventor： BARKLEY, Warren V. ,  CHOU, Philip A. ,  CRINON, Regis J. ,  MOORE, Tim

IPC: H04N7/24

CPC classification number: H04N21/8451 ,  H04N19/132 ,  H04N19/31 ,  H04N19/33 ,  H04N19/587 ,  H04N19/59 ,  H04N19/70 ,  H04N21/234327 ,  H04N21/234345 ,  H04N21/234363 ,  H04N21/234381

Abstract: Techniques for variable resolution encoding and decoding of digital video are described. An apparatus may comprise a video encoder to encode video information into a video stream with a base layer and an enhancement layer. The base layer may have a first level of spatial resolution and a first level of temporal resolution. The enhancement layer may increase the first level of spatial resolution or the first level of temporal resolution. Other embodiments are described and claimed.