Method and system for broadcasting live data over a network

• US 7,676,596 B1
• Filed: 11/17/2006
• Issued: 03/09/2010
• Est. Priority Date: 03/06/2003
• Status: Active Grant

• Current Assignee: NVIDIA Corporation
• Original Assignee: NVIDIA Corporation
• Inventors: Pereira, Mark Anthony
• Primary Examiner(s): DENNISON, JERRY B
• Application Number:
  US11/601,412
• Time in Patent Office: 1,208 Days
• Field of Search: 709/238, 370/408
• US Class Current: 709/238
• CPC Class Codes: H04L 12/1854 with non-centralised forwarding system, e.g. chaincast
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32

Abstract

Method and system for broadcasting live data over a network are described. In one embodiment, live data is accessed. Next, a first client is authenticated. The live data is then broadcast to a first client, wherein the first client is capable of buffering and re-transmitting the live data. Next, a second client is authenticated. A list of clients receiving the live data is then sent to the second client. The second client then selects the first client from the list, contacts the first client, and then receives the live data from the first client.

Claims

1. A system for broadcasting live data over a network comprising:

a broadcast server broadcasting live data over a network;

a first client receiving said broadcasting from said server, said first client capable of buffering and re-transmitting the live data; and

a second client accessing said broadcast server and receiving a list of clients receiving said broadcast including said first client from said broadcast server, said second client selecting said first client from said list, said second client informing said broadcast server of said selection of said first client, said second client contacting said first client, and said second client receiving said broadcasting from said first client.

2. The system of claim 1, wherein said broadcast server maintains a list of clients receiving and transmitting the broadcast data.

3. The system of claim 1, wherein said second client selects said first client based on broadcasting properties of said first client comprising:

IP address, speed of connection, number of clients already receiving said live data from the first client, and history of first client up-time.

4. The system of claim 1, wherein the broadcast server maintains a bandwidth reserve to temporarily transmit to said second client in case of a fault occurring with said first client.

5. The system of claim 1, wherein said first client transmits a signal to said second client informing said second client of the intent of said first client to depart prior to departure of said first client.

6. The system of claim 5, wherein said first client continues to receive and transmit live data until said second client transfers to a new transmitter.

7. The system of claim 5, wherein said second client maintains a list of all other clients accessing said broadcast at a lower level in the same broadcast chain.

8. The system of claim 7, wherein said second client may not default to receive said broadcast from any of the other clients accessing said broadcast at a lower level in the same broadcast chain.

9. The system of claim 1, wherein a fee is charged per client per amount of broadcast received, and a reward is paid per client per amount of broadcast transmitted.

25. The system of claim 1, wherein said second client selects said first client based on a speed of connection of said first client.

26. The system of claim 1, wherein said second client selects said first client based on a number of clients already receiving said live data from said first client.

10. A server implemented method for broadcasting live data over a network comprising:

receiving an access request for live data from a first client;

broadcasting the live data to said first client, wherein said first client is capable of buffering and re-transmitting the live data;

receiving the access request from a second client; and

sending a list of clients capable of re-transmitting the live data to said second client, wherein said list of clients comprises said first client, and wherein said second client is capable of;

selecting said first client from said list;

informing said server of said selecting;

contacting said first client; and

receiving said live data from said first client.

11. The method of claim 10 further comprising:

maintaining a list of clients receiving said live data.

12. The method of claim 10 wherein said list comprises broadcasting properties of said first client, and wherein further said broadcasting properties comprise:

an IP address of said first client, a speed of connection of said first client, a number of clients already receiving said live data from said first client, and a history of said first client up-time.

13. The method of claim 10 further comprising:

receiving a termination request signal from said first client;

sending a new list of clients capable of re-transmitting the live data to said second client; and

following said signaling, said first client terminating said re-transmitting from said first client.

14. The method of claim 13 further comprising:

maintaining the buffering and re-transmitting of said live data to said second client until said second client transfers to a new transmitter.

15. The method of claim 14 further comprising:

prohibiting said second client from receiving said live data from any other clients accessing the broadcast at a lower level.

16. The method of claim 10 further comprising:

charging a fee per client per amount of live data received; and

providing a reward per client per amount of live data transmitted.

27. The method of claim 10 further comprising:

receiving a termination request signal from said first client; and

maintaining the buffering and re-transmitting of said live data to said second client until said second client transfers to a new transmitter.

17. A system comprising a computer system comprising a processor coupled to a bus, a transmitter/receiver coupled to said bus, and a memory coupled to said bus, wherein said memory comprises instructions that when executed on said processor implement a method for broadcasting live data over a network, said method comprising:

receiving an access request for live data from a first client;

broadcasting the live data to said first client, wherein said first client is capable of buffering and re-transmitting the live data;

receiving the access request from a second client;

sending a list of clients capable of re-transmitting the live data to said second client, wherein said list of clients comprises said first client;

receiving a message from said second client, wherein said message indicates selection of said first client.

18. The system of claim 17 further comprising the second client operable to:

select said first client from said list;

transmit said message to indicate said selection of said first client;

contact said first client; and

receive said live data from said first client.

19. The system of claim 17, wherein said method comprises:

maintaining a list of clients receiving said live data.

20. The system of claim 17, wherein said list comprises broadcasting properties of said first client, and wherein said broadcasting properties comprise:

an IP address of said first client, a speed of connection of said first client, a number of clients already receiving said live data from said first client, and a history of said first client up-time.

21. The system of claim 17, wherein said method further comprises:

receiving a termination request signal from said first client;

sending a new list of clients capable of re-transmitting the live data to said second client; and

following said signaling, said first client terminating said re-transmitting from said first client.

22. The system of claim 21, wherein said method further comprises:

maintaining the buffering and re-transmitting of said live data to said second client until said second client transfers to a new transmitter.

23. The system of claim 22, wherein said method further comprises:

prohibiting said second client from receiving said live data from any other clients accessing the broadcast at a lower level.

24. The system of claim 17, wherein said method further comprises:

charging a fee per client per amount of live data received; and

providing a reward per client per amount of live data transmitted.

28. The system of claim 17, wherein said method further comprises:

receiving a termination request signal from said first client; and

maintaining the buffering and re-transmitting of said live data to said second client until said second client transfers to a new transmitter.