1
Scott S Firestone, Walter R Friedrich, Nermin M Ismail, Keith A Lantz, Shantanu Sarkar, Luke K Surazski, Duanpei Wu: System and method for performing distributed video conferencing. Cisco Technology, Baker Botts L, January 24, 2006: US06989856 (150 worldwide citation)

A method for executing a video conference is provided that includes receiving one or more audio streams associated with a video conference from one or more end points and determining an active speaker associated with one of the end points. Audio information associated with the active speaker may be ...


2
Scott S Firestone, Walter R Friedrich, Nermin M Ismail, Keith A Lantz, Shantanu Sarkar, Luke K Surazski, Duanpei Wu: System and method for performing distributed video conferencing. Cisco Technology, Baker Botts L, January 13, 2009: US07477282 (102 worldwide citation)

A method for executing a video conference is provided that includes receiving one or more audio streams associated with a video conference from one or more end points and determining an active speaker associated with one of the end points. Audio information associated with the active speaker may be ...


3
Scott S Firestone, Walter R Friedrich, Nermin M Ismail, Keith A Lantz, Shantanu Sarkar, Luke K Surazski, Duanpei Wu: System and method for providing video conferencing synchronization. Cisco Technology, Baker Botts L, August 1, 2006: US07084898 (68 worldwide citation)

An audio mixer on a first device receives one or more incoming audio streams. Each of the one or more incoming audio streams has an associated timestamp. The audio mixer generates a mixed audio stream from the one or more incoming audio streams. The audio mixer determines differences in the time bas ...


4
Pascal H Huart, Luke K Surazski: Method and system for real-time monitoring of voice mail during active call. Cisco Technology, Baker Botts L, December 9, 2003: US06661886 (60 worldwide citation)

A method and system for real-time monitoring voice mail during an active call includes generating a duplicate of a calling party voice stream being recorded by voice mail for a called party on a call with a previously connected party. The duplicate calling party voice stream is combined with a previ ...


5
Luke K Surazski, Pascal H Huart: Management of packet-based audio devices within acoustic spaces. Cisco Technology, Baker Botts L, July 7, 2009: US07558224 (56 worldwide citation)

A system includes multiple packet-based communication devices that support audio output and other suitable functionality and an acoustic space management device that manages these devices to provide telephony services within acoustic spaces. These devices can coordinate their actions to provide audi ...


6
Nicholas J Cutaia, Luke K Surazski: Replay of conference audio. Cisco Technology, Baker Botts L, October 25, 2005: US06959075 (42 worldwide citation)

A system enables conferencing of multiple participants within a single voice communication session. A replay module records conference audio during the conference and, at appropriate times, provides this buffered audio to selected participants of the conference.


7
Bich Nguyen, Ilya Slain, Kevin J Connor, Luke K Surazski, Ramanathan T Jagadeesan: Devices and methods for minimizing start up delay in transmission of streaming media. Cisco Technology, Marger Johnson & McCollom P C, May 13, 2008: US07373413 (39 worldwide citation)

Devices and methods are provided for minimizing the startup delay of streaming media transmitted through networks. A server maintains a portion of the media stream stored in an initial burst transmit buffer. At startup, the stored portion is transmitted at a rate higher than the fixed frame rate, ex ...


8
Ramanathan Jagadeesan, Luke K Surazski: Devices, software and methods for generating aggregate comfort noise in teleconferencing over VoIP networks. Cisco Systems, Marger Johnson & McCollom P C, March 14, 2006: US07012901 (28 worldwide citation)

Devices, software and methods are provided for generating aggregate comfort noise for teleconferencing over IP networks. A transcoding component includes a decoder for decoding streams of packets. A summing component has a summer with summing inputs to receive the decoded streams of packets. The sum ...


9
Pascal H Huart, Luke K Surazski: Method and apparatus for reconstructing voice information. Cisco Technology, Baker Botts L, March 14, 2006: US07013267 (28 worldwide citation)

A communication system includes a destination that receives voice samples and a voice parameter generated by a source. The destination uses the voice samples and voice parameter to reconstruct voice information in response to a packet loss. The destination may reconstruct voice information from mult ...


10
Bich Nguyen, Ilya Slain, Kevin J Connor, Luke K Surazski: Server and method for transmitting streaming media to client through a congested network. Cisco Technology, Marger Johnnson & McCollom P C, September 19, 2006: US07111058 (24 worldwide citation)

A server is provided with a transmit buffer, a transcoder, and a redundancy encoder. The server is for transmitting streaming media to a client through a communication network. A control unit senses when the network is temporarily congested, and activates the transcoder and the redundancy encoder. T ...