Apparatus, method, and computer readable medium for providing a presentation on a network having a plurality of synchronized media types

• US 8,065,427 B1
• Filed: 11/03/2010
• Issued: 11/22/2011
• Est. Priority Date: 03/31/1997
• Status: Active Grant

• Current Assignee: Red Hat, Inc. (International Business Machines Corporation)
• Original Assignee: West Corporation
• Inventors: Johnson, Frank E, Adornato, Rocco L, Ogdon, Robert H
• Primary Examiner(s): LIN, WEN TAI
• Application Number:
  US12/938,482
• Time in Patent Office: 384 Days
• Field of Search: None
• US Class Current: 709/231
• CPC Class Codes: H04L 12/1827 Network arrangements for conference optimisation or adaptation
• CPC Class Codes: H04L 12/1836 with heterogeneous network architecture
• CPC Class Codes: H04L 43/0894 Packet rate
• CPC Class Codes: H04L 63/02 for separating internal from external traffic, e.g. firewalls
• CPC Class Codes: H04L 63/0209 Architectural arrangements, e.g. perimeter networks or demilitarized zones
• CPC Class Codes: H04L 63/04 for providing a confidential data exchange among entities communicating through data packet networks
• CPC Class Codes: H04L 63/083 using passwords cryptographic mechanisms or cryptographic arrangements for entity authentication using a predetermined code H04L9/3226
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04L 65/65 Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
• CPC Class Codes: H04L 65/762 at the source reformatting of additional data in video distribution servers H04N21/2355
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 67/75 Indicating network or usage conditions on the user display
• CPC Class Codes: H04N 21/234327 by decomposing into layers, e.g. base layer and one or more enhancement layers
• CPC Class Codes: H04N 21/2402 Monitoring of the downstream path of the transmission network, e.g. bandwidth available traffic monitoring in data switching networks H04L43/00; monitoring data switching networks utilization H04L43/0876
• CPC Class Codes: H04N 21/242 Synchronization processes, e.g. processing of PCR [Program Clock References] arrangements for synchronising broadcast or distribution via plural systems in broadcast distribution systems H04H20/18
• CPC Class Codes: H04N 21/2662 Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
• CPC Class Codes: H04N 21/43072 of multiple content streams on the same device
• CPC Class Codes: H04N 21/4331 : Caching operations, e.g. of an advertisement for later insertion during playback
• CPC Class Codes: H04N 21/4622 : Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859
• CPC Class Codes: H04N 21/632 : using a connection between clients on a wide area network, e.g. setting up a peer-to-peer communication via Internet for retrieving video segments from the hard-disk of other client devices broadcast-related systems characterised by transmission among terminal devices H04H60/80; distributed application using peer-to-peer [P2P] networks H04L67/104
• CPC Class Codes: H04N 21/6543 : for forcing some client operations, e.g. recording remote booting in general G06F9/4416
• CPC Class Codes: H04N 7/15 : Conference systems

Abstract

An apparatus, method, and computer readable medium is disclosed for synchronizing a performance of a plurality of presentation content portions at a network node, wherein, e.g., when two such content portions are to be presented concurrently at the network node, at least one is delayed until the other such portion can be presented concurrently therewith. That is, these two portions may be received by the network node at times sufficiently far apart so that the earlier received content portion must have its presentation appropriately delayed in order to be presented concurrently with the second content portion. In one embodiment, the content portions are transmitted via at least a portion of the Internet to a plurality of network nodes, wherein the presentation system can distribute the presentation content data to the network nodes via a plurality of network routes and presentation formats. In particular, a first portion of the content data may be provided as slides in, e.g., HTML, while a second portion of the content data may be provided as an audio/video stream.

Claims

1. A method, comprising the following computer-implemented steps:

receiving in a client node a presentation command to display a presentation portion comprising a first stream content and a second stream content;

receiving in the client node a timing command indicating a time at which to display the presentation portion;

sourcing the first stream content from a first stream source and sourcing the second stream content from a second stream source, at least one of the first stream source and the second stream source comprising a web server; and

synchronizing display of the first stream content with the second stream content to the client node using a stream delay parameter;

wherein the first stream content and the second stream content are synchronously rendered at the client node at a time derived from the time indicated by the timing command and the stream delay parameter wherein the delay parameter accounts for the propagation time difference between the first stream content and the second stream content.

2. The method of claim 1, further comprising displaying the second stream content to the client node by delaying transmission of the first stream content to the client node based upon the stream delay parameter.

3. The method of claim 1, wherein the first stream content is transmitted from at least a first leader associated with at least a given presentation.

4. The method of claim 1, further comprising issuing at least one presentation command to transmit the second stream content to the client node in place of the first stream content.

5. The method of claim 1, further comprising displaying at least a portion of the first stream content at the client node based on the synchronizing step, and thereafter displaying at least a portion of the second stream content to the client node in response to the synchronizing step.

6. The method of claim 1, further comprising delaying display of the first stream content relative to display of the second stream content at the client node.

7. The method of claim 6, wherein delaying display of the first stream content includes buffering the first stream content.

8. The method of claim 1 wherein the stream delay parameter is determined by at least one of:

transmitting first data representing an audio sample of given data from a host to the client node over a first communication link;

transmitting second data representing the audio sample from the host to the client node over a second communication link;

comparing transmission times associated with the first communication link and the second communication link;

establishing a difference therebetween as the stream delay parameter, wherein transmitting the second data includes transmitting the second data via at least one internet link; and

wherein the first and second stream content are received by the client via the first and second communication links, respectively.

9. The method of claim 8 wherein transmitting the first data representing an audio sample of given stream content from the host to the client node via a phone bridge comprises;

transmitting the second data representing the audio sample from the host to the client node via an internet stream transmission;

comparing transmission times associated with the phone bridge and the internet stream transmission; and

establishing a difference therebetween as the stream delay parameter; and

wherein the first and second stream content are received by the client via the phone bridge and internet transmission, respectively.

10. A non-transitory computer readable medium comprising instructions operable to perform steps comprising:

receiving a presentation command to display a presentation portion comprising a first stream content and a second stream content;

receiving a timing command indicating a time at which to display the presentation portion;

sourcing the first stream content from a first stream source and sourcing the second stream content from a second stream source, at least one of the first stream source and the second stream source comprising a web server; and

synchronizing display of the first stream content with the second stream content to a client node using a stream delay parameter;

wherein the first stream content and the second stream content are synchronously rendered at the client node at a time derived from the time indicated by the timing command and the stream delay parameter wherein the delay parameter accounts for the propagation time difference between the first stream content and the second stream content.

11. The non-transitory computer readable medium of claim 10 wherein the stream delay parameter is determined by at least one of:

transmitting first data representing an audio sample of given data from a host to the client node over a first communication link;

transmitting second data representing the audio sample from the host to the client node over a second communication link;

comparing transmission times associated with the first communication link and the second communication link;

establishing a difference therebetween as the stream delay parameter, wherein transmitting the second data includes transmitting the second data via at least one internet link;

wherein the first and second stream content are received by the client via the first and second communication links, respectively.

12. The non-transitory computer readable medium of claim 11 wherein transmitting the first data representing an audio sample of given stream content from the host to the client node via a phone bridge comprises;

transmitting the second data representing the audio sample from the host to the client node via an internet stream transmission;

comparing transmission times associated with the phone bridge and the internet stream transmission; and

establishing a difference therebetween as the stream delay parameter; and

wherein the first and second stream content are received by the client via the phone bridge and internet transmission, respectively.

13. The non-transitory computer readable medium of claim 10, wherein the method steps further comprise displaying the second stream content to the client node by delaying transmission of the first stream content to the client node based upon the stream delay parameter.

14. The non-transitory computer readable medium of claim 10, wherein the first stream content is transmitted from at least a first leader associated with at least a given presentation.

15. The non-transitory computer readable medium of claim 10, further comprising issuing at least one presentation command to transmit the second stream content to the client node in place of the first stream content.

16. The non-transitory computer readable medium of claim 10, further comprising displaying at least a portion of the first stream content at the client node based on the synchronizing step, and thereafter displaying at least a portion of the second stream content to the client node in response to the synchronizing step.

17. The non-transitory computer readable medium of claim 10, further comprising delaying display of the first stream content relative to display of the second stream content at the client node.

18. The non-transitory computer readable medium of claim 13, wherein delaying display of the first stream content includes buffering the first stream content.

19. An apparatus, comprising:

a processor that;

receives a presentation command to display a presentation portion comprising a first stream content and a second stream content;

receives a timing command indicating a time at which to display the presentation portion;

sources the stream content from a stream source comprising at least one web server; and

synchronizes display of a real-time content and the stream content to a client node using a stream delay parameter;

wherein the first stream content and the second stream content are synchronously rendered at the client node at a time derived from the time indicated by the timing command and the stream delay parameter wherein the delay parameter accounts for the propagation time difference between the first stream content and the second stream content.

20. The method of claim 19 wherein the stream delay parameter is determined by at least one of:

transmitting first data representing the real-time content from a host to the client node including the processor over a first communication link;

transmitting second data representing the stream content from the host to the client node including the processor over a second communication link;

comparing transmission times associated with the first communication link and the second communication link;

establishing a difference therebetween as the stream delay parameter, and

wherein transmitting the second data includes transmitting the second data via at least one internet link.

21. The method of claim 20 wherein transmitting the first data representing the real-time content from the host to the client node including the processor via a phone bridge comprises;

transmitting the second data representing the stream content from the host to the client node including the processor via an internet stream transmission;

comparing transmission times associated with the phone bridge and the internet stream transmission; and

establishing a difference therebetween as the stream delay parameter; and

wherein the first and second stream content are received by the client via the phone bridge and internet transmission, respectively.

22. The apparatus of claim 19, wherein the processor is further operable to delay display of the real-time content relative to display of the stream content at the client node.

23. The apparatus of claim 22, wherein the processor is operable to delay display of the real-time content by buffering the real-time content.

24. The apparatus of claim 19, wherein the processor is operable to display the stream content to the client node by delaying transmission of the real-time content to the client node based upon the stream delay parameter.

25. The apparatus of claim 19, wherein the real-time content is transmitted from at least a first leader associated with at least a given presentation.

26. The apparatus of claim 19, wherein at least one presentation command is issued to the processor to initiate the transmission of the stream content to the client node in place of the real-time content.