Apparatus and method for providing access to a data stream by a plurality of users at a same time

• US 8,180,913 B2
• Filed: 09/13/2006
• Issued: 05/15/2012
• Est. Priority Date: 07/13/2000
• Status: Active Grant

• Current Assignee: Daedalus Blue LLC
• Original Assignee: International Business Machines Corporation
• Inventors: Coleman, David Allen
• Primary Examiner(s): Lazaro, David
• Assistant Examiner(s): HENRY, MARIEGEORGES A
• Application Number:
  US11/531,472
• Publication Number:
  US 20070136452A1
• Time in Patent Office: 2,071 Days
• Field of Search: 709/205, 709/223, 709/231, 370/270
• US Class Current: 709/231
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/611 for multicast or broadcast systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06
• CPC Class Codes: H04L 65/765 intermediate

Abstract

A system for providing access to a data stream by a plurality of users at a same time. A data stream splitter manager listens for new client device connections. When a new client device connection is identified, the data stream splitter manager generates a pseudo-terminal for the client device and adds the client device and pseudo-terminal information to a data stream splitter table. In addition, a data stream splitter is generated to handle the data transfer. The data stream splitter searches the data stream splitter table for client devices participating in a system resource sharing session. The data stream splitter sends a data stream associated with the shared system resource to the associated client device pseudo-terminals. Also, the data stream splitter sends data from the client devices to the pseudo-terminals and then to the data stream. Consequently, client devices involved in the session has shared system resource access.

Claims

1. A computer program product stored in a computer readable storage device having instructions embodied therein that are executable by a computer for providing a device shared access to a data stream, the computer program product comprising:

instructions for receiving by a data stream splitter manager in a server device a request via a network for access to the data stream from a client device within a plurality of client devices, wherein the data stream splitter manager forks a copy of itself in the server device to handle the access to the data stream for that client device;

instructions for adding an entry to a data stream splitter table for the client device; and

instructions for providing the client device access to the data stream via a data stream splitter component in the server device in accordance with the entry in the data stream splitter table, wherein the forked copy of data stream splitter manager dynamically constructs the data stream splitter component in the server device which provides shared access to the data stream by the plurality of client devices in response to determining that the data stream is not already being handled by another data stream splitter component.

2. The computer program product of claim 1, wherein access to the data stream is shared by the plurality of client devices, each of the client devices within the plurality of client devices having full access to the data stream at a same time to modify the data stream.

3. The computer program product of claim 1, wherein the client device is provided a private communication channel to the data stream but an output from the data stream is shared by the client device and plurality of client devices.

4. The computer program product of claim 1, further comprising:

instructions for generating, by the data stream splitter manager, a pseudo-terminal for the client device that provides data communication between the data stream splitter component and the client device, wherein data received by the data stream splitter component from the data stream is sent to the pseudo-terminal and data received by the pseudo-terminal from the client device is sent to the data stream splitter component.

5. The computer program product of claim 1, wherein the instructions for providing the device access to the data stream include:

instructions for cycling through the data stream splitter table to identify entries associated with the data stream splitter component; and

instructions for cyclically providing the client device and plurality of client devices access to the data stream based on the cycling through the data stream splitter table.

6. The computer program product of claim 1, further comprising:

instructions for determining whether access to the data stream is being handled by the data stream splitter component, wherein the instructions for adding the entry to the data stream splitter table for the client device include instructions for adding the entry to a data stream splitter table associated with the data stream splitter component.

7. The computer program product of claim 1, further comprising:

instructions for receiving from at least two of the plurality of client devices input to modify the data stream;

instructions for combining the input to modify the data stream from the at least two of the plurality of client devices to produce a combined raw output; and

instructions for simultaneously outputting in real time the combined raw output of the modified data stream based on the input from the at least two of the plurality of client devices on an output device at each of the plurality of client devices accessing the data stream during a session.

8. An apparatus for providing a device shared access to a data stream, comprising:

a bus system;

a storage device connected to the bus system, wherein the storage device contains a set of instructions; and

a processor connected to the bus system, wherein the processor executes the set of instructions to receive by a data stream splitter manager in a server device a request via a network for access to the data stream from a client device within a plurality of client devices, wherein the data stream splitter manager forks a copy of itself in the server device to handle the access to the data stream for that client device;

add an entry to a data stream splitter table for the client device; and

provide the client device access to the data stream via a data stream splitter component in the server device in accordance with the entry in the data stream splitter table, wherein the forked copy of data stream splitter manager dynamically constructs the data stream splitter component in the server device which provides shared access to the data stream by the plurality of client devices in response to determining that the data stream is not already being handled by another data stream splitter component.

9. The apparatus of claim 8, wherein the data stream splitter manager generates a pseudo-terminal for the client device that provides data communication between the data stream splitter component and the client device, and wherein data received by the data stream splitter component from the data stream is sent to the pseudo-terminal and data received by the pseudo-terminal from the client device is sent to the data stream splitter component.

10. The apparatus of claim 8, further comprising a playback buffer, wherein data from the data stream is stored in the playback buffer, and wherein when the client device is first provided access to the data stream, the data from the data stream stored in the playback buffer are streamed to the client device.

11. The apparatus of claim 8, wherein the processor executes a further set of instructions to receive from at least two of the plurality of client devices input to modify the data stream;

combine the input to modify the data stream from the at least two of the plurality of client devices to produce a combined raw output; and

simultaneously output in real time the combined raw output of the modified data stream based on the input from the at least two of the plurality of client devices on an output device at each of the plurality of client devices accessing the data stream during a session.

12. A computer implemented method in a data processing system for providing a device shared access to a data stream, the computer implemented method comprising:

receiving by a data stream splitter manager in a server device a request via a network for access to the data stream from a client device within a plurality of client devices, wherein the data stream splitter manager forks a copy of itself in the server device to handle the access to the data stream for that client device;

adding an entry to a data stream splitter table for the device; and

providing the client device access to the data stream via a data stream splitter component in the server device in accordance with the entry in the data stream splitter table, wherein the forked copy of data stream splitter manager dynamically constructs the data stream splitter component in the server device which provides shared access to the data stream by the plurality of client devices in response to determining that the data stream is not already being handled by another data stream splitter component.

13. The computer implemented method of claim 12, wherein access to the data stream is shared by the plurality of client devices, each of the client devices within the plurality of client devices having full access to the data stream at a same time to modify the data stream.

14. The computer implemented method of claim 12, wherein the client device is provided a private communication channel to the data stream but an output from the data stream is shared by the client device and the plurality of client devices.

15. The computer implemented method of claim 12, further comprising:

generating, by the data stream splitter manager, a pseudo-terminal for the client device that provides data communication between the data stream splitter component and the client device, wherein data received by the data stream splitter component from the data stream is sent to the pseudo-terminal and data received by the pseudo-terminal from the client device is sent to the data stream splitter component.

16. The computer implemented method of claim 12, wherein the step of providing the client device access to the data stream includes:

cycling through the data stream splitter table to identify entries associated with the data stream splitter component; and

cyclically providing the client device and the plurality of client devices access to the data stream based on the cycling through the data stream splitter table.

17. The computer implemented method of claim 12, further comprising:

determining whether access to the data stream is being handled by the data stream splitter component, wherein adding the entry to the data stream splitter table for the client device includes adding the entry to a data stream splitter table associated with the data stream splitter component.

18. The computer implemented method of claim 12, further comprising:

receiving from at least two of the plurality of client devices input to modify the data stream;

combining the input to modify the data stream from the at least two of the plurality of client devices to produce a combined raw output; and

simultaneously outputting in real time the combined raw output of the modified data stream based on the input from the at least two of the plurality of client devices on an output device at each of the plurality of client devices accessing the data stream during a session.