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The transmission of broadcast data, such as financial data and news feeds, is accelerated over a communication channel using data compression and decompression to provide secure transmission and transparent multiplication of communication bandwidth, as well as reduce latency. Broadcast data may include packets having fields. Encoders associated with particular fields may be selected to compress those particular fields.

Inventors: James J Fallon, Paul F. Pickel, Stephen J McErlain, Carlton W. Melone
Original Assignee: Realtime Data LLC
Primary Examiner: Jean B Jeanglaude
Attorney: Ropes & Gray LLP
Current U.S. Classification: 341/51; 341/50

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Claims

1. A method comprising:

recognizing a data field type of a data field in a packet;

selecting an encoder associated with the recognized data field type;

compressing the data in the data field with the selected encoder;

broadcasting the compressed data to a plurality of clients, wherein the compressing achieves a compression ratio of over 10:1; and
utilizing a decompression state machine that comprises a plurality of decompression tables to decompress the compressed data on at least one of the plurality of clients.

2. The method of claim 1, wherein the time of the compressing and broadcasting is less than the time to broadcast the data in uncompressed form.

3. The method of claim 1, wherein the time of the compressing, broadcasting, and decompressing is less than the time to broadcast the data in uncompressed form.

4. The method of claim 1, wherein the packet includes multiple messages.

5. The method of claim 1, wherein the compressed data is broadcasted as part of a financial data feed.

6. The method of claim 1, wherein the data field includes stock information.

7. The method of claim 1, wherein the data field includes options information.

8. The method of claim 1, wherein the compressing is lossless.

9. The method of claim 1, wherein the broadcasting utilizes UDP.

10. The method of claim 1, wherein the compressing is performed on a server and the compressed data is broadcast from the server.

11. A method comprising:

recognizing a data field type of a data field in a packet; selecting an encoder associated with the recognized data field type;

compressing the data in the data field with the selected encoder; and

point-to-point transmitting the compressed data to a client, wherein the compressing utilizes a state machine and the time of the compressing and transmitting is less than the time to transmit the data in uncompressed form.

12. The method of claim 11, wherein the compressing achieves a compression ratio of over 10:1.

13. The method of claim 11, wherein the time of the compressing, transmitting, and decompressing is less than the time to broadcast the data in uncompressed form.

14. The method of claim 11, wherein the packet includes multiple messages.

15. The method of claim 11, wherein the compressed data is transmitted as part of a financial data feed.

16. The method of claim 11, wherein the data field includes stock information.

17. The method of claim 11, wherein the data field includes options information.

18. The method of claim 11, wherein the compressing is lossless.

19. The method of claim 11, wherein the transmitting utilizes UDP.

20. The method of claim 11, wherein the compressing is performed on a server and the compressed data is transmitted from the server.

21. A method comprising:

processing data of a data field of a plurality of data fields in a packet of a financial data feed by utilizing a list of the plurality of data fields and associated encoders to select an encoder associated with the data field and utilize the selected encoder on the data of the data field to provide a processed data, wherein the size of the processed data is less than the size of the data before the processing; and

broadcasting the processed data to a plurality of clients, wherein the time of the processing and broadcasting is less than the time to broadcast the data in unprocessed form.

22. The method of claim 21, wherein the processed data includes date information.

23. The method of claim 21, wherein the processed data includes sequence information.

24. The method of claim 21, wherein the processed data includes multiple messages.

25. The method of claim 21, wherein the processing is performed on a server.

26. The method of claim 21, wherein the processing is performed on a server and the processed data is broadcast from said server.

27. The method of claim 21, wherein the processed data includes stock information.

28. The method of claim 21, wherein the processed data includes options information.

29. The method of claim 21, wherein the selected encoder is a lossless encoder.

30. The method of claim 21, wherein the broadcasting utilizes UDP.

Drawings