Method for real time protocol media recording

• US 7,447,242 B2
• Filed: 03/15/2004
• Issued: 11/04/2008
• Est. Priority Date: 06/10/1999
• Status: Expired due to Fees

• Current Assignee: CA, Inc. (d/b/a CA Technologies) (Broadcom, Inc.)
• Original Assignee: Blue Coat Systems Incorporated (Gen Digital Inc.)
• Inventors: Geagan, John B. III, Kellner, Michael D., Periyannan, Alagu S.
• Primary Examiner(s): Jain; Raj K
• Application Number:
  US10/801,393
• Publication Number:
  US 20040174875A1
• Time in Patent Office: 1,695 Days
• Field of Search: None
• US Class Current: 370/538
• CPC Class Codes: H04L 1/22 using redundant apparatus to increase reliability
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04L 65/765 intermediate
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04N 21/23424 involving splicing one content stream with another content stream, e.g. for inserting or substituting an advertisement
• CPC Class Codes: H04N 21/2381 Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/44016 involving splicing one content stream with another content stream, e.g. for substituting a video clip
• 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 21/6125 involving transmission via Internet transmission by internet of broadcast information H04H60/82
• CPC Class Codes: H04N 21/6437 Real-time Transport Protocol [RTP]

Abstract

In the face of data loss on connections between a content source and a content consumer, additional connections therebetween are opened. These additional connections are preferably opened between the content source and a proxy disposed between the content source and the content consumer. The proxy may then seam together data streams received from the content source across the additional connections in a recording on a computer-readable medium. The seamed stream may be constructed by filling in information gaps in any of the data streams received from the content source with content derived from others of the data streams received from the content source. This derivation may be made on the basis of identifying characteristics (e.g., packet contents) of packets from each of the data streams received from the content source.

Claims

1. A method, comprising seaming together a recording of streaming content downloaded over one or more occasions from a content source in response to an indication that data loss has occurred during playbacks from the content source, wherein (i) the downloads occur over multiple connections between the content source and a proxy disposed between the content source and one or more content consumers, (ii) the proxy seams together data streams received from the content source across the multiple connections before storing a resultant seamed stream to a computer readable medium, and (iii) the proxy constructs the seamed stream by filling in information gaps in any of the data streams received from the content source with content derived from others of the data streams received from the content source.

2. The method of claim 1 wherein the information gaps are filled in with reference to timestamps and/or packets sequence numbers of packets of the data streams.

3. The method of claim 2 wherein the timestamps and/or packet sequences numbers are normalized before the information gaps are filled in.