Methods and systems for transferring events including multimedia data

• US 20040103438A1
• Filed: 11/27/2002
• Published: 05/27/2004
• Est. Priority Date: 11/27/2002
• Status: Abandoned Application

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Kumar, Rajendra, Shen, Bo, Basu, Sujoy, Yan, Yong
• Application Number:
  US10/306,536
• Publication Number:
  US 20040103438A1
• Time in Patent Office: Days
• US Class Current: 725/109
• 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 65/764 at the destination reformatting of additional data in video clients H04N21/4355
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/04 specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
• CPC Class Codes: H04L 67/08 specially adapted for terminal emulation, e.g. Telnet
• CPC Class Codes: H04L 67/131 Protocols for games, networked simulations or virtual reality
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• 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 21/25825 involving client display capabilities, e.g. screen resolution of a mobile phone optimising the visualisation of content during browsing in the Internet G06F16/9577; processing of terminal status or physical abilities in wireless networks H04W8/22; authentication in wireless network security H04W12/06
• CPC Class Codes: H04N 21/4431 characterized by the use of Application Program Interface [API] libraries
• CPC Class Codes: H04N 21/6125 involving transmission via Internet transmission by internet of broadcast information H04H60/82
• CPC Class Codes: H04N 21/6437 Real-time Transport Protocol [RTP]

Abstract

Methods and systems for transferring an event from a server to a remote client are described. An event is received from a driver. The event is dispatched into an event queue according to the event type. The event is processed according to the event type. The processing includes encoding the event when the event comprises multimedia data. The event is transferred to the remote client when triggered. The transfer occurs according to a protocol corresponding to the event type.

Claims

1. A method for transferring an event from a server to a remote client, said method comprising:

receiving an event from a driver;

dispatching said event into an event queue according to event type;

processing said event according to said event type, wherein said processing comprises encoding said event when said event comprises multimedia data; and

transferring said event to said remote client when triggered, wherein said transferring occurs according to a protocol corresponding to said event type.

2. The method of claim 1 wherein said event is a keyboard event, a mouse event, a video event or an audio event and wherein said driver is a keyboard driver, a mouse driver, a video driver or an audio driver.

3. The method of claim 2 wherein said protocol is Transport Control Protocol (TCP) for keyboard, mouse and graphics events and Real Time Protocol (RTP) for video and audio events.

4. The method of claim 1 wherein said dispatching comprises:

filtering said event to identify said event type.

5. The method of claim 1 wherein said processing of multimedia data further comprises:

synchronizing an audio portion and a related media portion of said multimedia data during said encoding, said related media portion selected from the group consisting of text, graphics and video.

6. The method of claim 5 wherein said transferring comprises:

streaming said audio portion and said related media portion in separate streams to said remote client.

7. The method of claim 1 wherein said transferring is triggered by a timer.

8. The method of claim 1 wherein said transferring is triggered when the number of events in said event queue reaches a threshold.

9. The method of claim 1 further comprising:

receiving events from said remote client.

10. A system for transferring an event to a remote client, said system comprising:

a driver interface for receiving different types of events from a plurality of drivers;

an event filter coupled to said driver interface, said event filter for identifying an event by event type and for placing said event into an event queue according to said event type;

a regulator coupled to said event queue, said regulator for impelling said event from said event queue to a processing engine that encodes said event when said event comprises multimedia data; and

a channel coupled to said processing engine, said channel for transferring said event to said remote client according to a protocol corresponding to said event type.

11. The system of claim 10 wherein said driver interface comprises:

modules for interfacing with said drivers, wherein there is a module suitable for interfacing with each driver; and

an application programming interface common to said modules and for providing a single interface to said event filter.

12. The system of claim 10 wherein said types of events are selected from the group consisting of keyboard events, mouse events, video events and audio events, and wherein said drivers are selected from the group consisting of keyboard drivers, mouse drivers, video drivers and audio drivers.

13. The system of claim 12 wherein said protocol is Transport Control Protocol (TCP) for keyboard, mouse and graphics events and Real Time Protocol (RTP) for video and audio events.

14. The system of claim 10 comprising an event queue for each event type, and a regulator coupled to each event queue, said regulator for causing an event to be forwarded from a respective event queue in response to a trigger.

15. The system of claim 14 wherein said trigger comprises a time interval, wherein an event is forwarded from said event queue to said processing engine after said time interval passes.

16. The system of claim 14 wherein said trigger comprises a threshold, when an event is forwarded from said event queue when the number of events in said event queue reaches said threshold.

17. The system of claim 14 comprising:

a monitor for monitoring said channel; and

a scheduler for specifying a value for said trigger according to said monitoring.

18. The system of claim 10 comprising:

a synchronizer for synchronizing an audio portion and a related media portion of said multimedia data during said encoding, said related media portion selected from the group consisting of text, graphics and video.

19. The system of claim 10 comprising:

a plurality of channels, wherein there is a channel for each of a plurality of different transfer protocols; and

a transfer engine for forwarding said event to a selected channel according to said event type.

20. The system of claim 19 comprising:

a communication manager for managing communications over said channels.

21. The system of claim 10 comprising:

a client event receiver for receiving events from said remote client.

22. A system for receiving events from a remote server, said system comprising:

an agent for managing a plurality of channels used for receiving different types of events from said remote server, each channel associated with one of a plurality of different protocols, wherein one of said channels is for streaming multimedia data;

a processing engine coupled to said channels, said processing engine for decoding an event when said event comprises encoded multimedia data; and

a driver interface coupled to said processing engine, said driver interface for forwarding said events to audio and video drivers according to event type, wherein said events are displayable on a display device.

23. The system of claim 22 comprising:

an event receiver coupled to said agent, said event receiver for receiving keyboard and mouse events from keyboard and mouse drivers, wherein said keyboard and mouse events are forwarded to said remote server.

24. The system of claim 22 comprising:

a monitor coupled to said agent for monitoring performance of said channels.

25. The system of claim 22 wherein said multimedia data comprise an audio portion and a related media portion, said related media portion selected from the group consisting of text, graphics and video, wherein said audio and related media portions are synchronized by said processing engine.

26. The system of claim 22 wherein said types of events are selected from the group consisting of keyboard events, mouse events, video events and audio events, and wherein said protocol is Transport Control Protocol (TCP) for keyboard, mouse and graphics events and Real Time Protocol (RTP) for video and audio events.