US Patent No: 5,999,977

Number of patents in Portfolio can not be more than 2000

System for terminating multicast channel and data broadcast when at least two second endpoints do not transmit positive acknowledgment message to first endpont

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Abstract

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A method and apparatus for optimizing transmission of data to a plurality of second endpoints in a system wherein a first endpoint is providing data to the plurality of second endpoints each connected by a point-to-point communication channels. This may be useful in teleconferencing applications with a plurality of participants (endpoints) or broadcast server applications. The first endpoint activates a multicast communication channel having a first multicast address and commences broadcast of the data over the multicast communication channel. The first endpoint transmits a request message to each of the plurality of second endpoints in order to query each of the second endpoints whether they can receive transmissions broadcast to the first multicast address. Certain of the plurality of second endpoints transmit an acknowledgment message if they can receive transmissions broadcast to the first multicast address, and the first endpoint receives the acknowledgment message. Then, for each acknowledgment message received from certain of the plurality of second endpoints, the first endpoint deactivates the point-to-point communication channel and the certain of the plurality of second endpoints.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
APPLE INC.CUPERTINO, CA10641

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Riddle, Guy G Los Gatos, CA 22 1045

Cited Art Landscape

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Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
MICROSOFT CORPORATION (6)
6,584,493 Multiparty conferencing and collaboration system utilizing a per-host model command, control and communication structure 141 1999
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INTOUCH TECHNOLOGIES, INC. (5)
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8,670,017 Remote presence system including a cart that supports a robot face and an overhead camera 0 2010
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APPLE INC. (3)
RE44395 System for terminating multicast channel and data broadcast when at least two second endpoints do not transmit positive acknowledgement message to first endpoint 0 2004
RE40704 System for terminating multicast channel and data broadcast when at least two second endpoints do not transmit positive acknowledgement message to first endpoint 0 2004
RE44306 System for terminating multicast channel and data broadcast when at least two second endpoints do not transmit positive acknowledgement message to first endpoint 0 2008
 
MOTOROLA MOBILITY LLC (2)
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NOKIA CORPORATION (1)
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SAMSUNG ELECTRONICS CO., LTD. (1)
8,223,851 Method and an apparatus for embedding data in a media stream 0 2007
 
Other [Check patent profile for assignment information] (1)
8,515,577 Medical tele-robotic system with a master remote station with an arbitrator 0 2007