System and method for monitoring video data

• US 20070261073A1
• Filed: 04/25/2007
• Published: 11/08/2007
• Est. Priority Date: 04/25/2006
• Status: Active Grant

• Current Assignee: XOrbit, Inc.
• Original Assignee: XOrbit, Inc.
• Inventors: Young, Philip, Blumenschein, Steven
• Granted Patent: US 8,255,963 B2
• Time in Patent Office: Days
• US Class Current: 725/19
• CPC Class Codes: H04H 20/14 for monitoring programmes
• CPC Class Codes: H04N 21/23418 involving operations for analysing video streams, e.g. detecting features or characteristics television picture signal circuitry for scene change detection H04N5/147; filtering for image enhancement G06T5/00; methods or arrangements for recognising scenes G06V20/00; arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• 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 21/2547 Third Party Billing, e.g. billing of advertiser
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/64715 Protecting content from unauthorized alteration within the network verifying the information received for network security in communication control or processing H04L63/12; integrity in wireless network security H04W12/10
• CPC Class Codes: H04N 21/8358 involving watermark protecting executable software by watermarking G06F21/16; image watermarking in general G06T1/0021; watermarks inserted in still images for transmission purposes H04N1/32144; inserting watermarks during video coding H04N19/467
• CPC Class Codes: H04N 21/8455 involving pointers to the content, e.g. pointers to the I-frames of the video stream

Abstract

A system and method for real-time monitoring of programming content transmission over a broadcast network. The identification and analysis of data embedded within a broadcast signal allows a broadcaster to determine whether or not their content is actually being broadcast over the network as intended. The embedded data may include various information and indicators, such as proprietary tags, included in the signal. Real-time monitoring may occur across single or multiple channels, narrow or wide geographic areas, be based on various demographic or other characteristics, and may be monitored by content providers or others.

Claims

1. A method for use in real-time monitoring of a broadcast signal, comprising the steps of:

receiving a broadcast signal from a broadcasting station;

receiving at least one rebroadcast signal from at least one intended recipient of said broadcast signal;

comparing at least a portion of said broadcast signal to at least a portion of said rebroadcast signal, wherein said portion of said broadcast signal comprises signal data that is native to said broadcast signal; and

determining whether said broadcast signal differs from said rebroadcast signal beyond a predetermined threshold.

2. The method of claim 1, further comprising the step of:

notifying a user of the occurrence of the existence of a difference between said broadcast signal and said rebroadcast signal beyond said predetermined threshold.

3. The method of claim 1, further comprising the step of:

creating a digest of said broadcast signal and a digest of each rebroadcast signal, wherein each of said digests comprises a plurality of timestamped data packets, and wherein said comparing step further comprises comparing data packets of said digest of said broadcast signal with data packets of each said digest of each rebroadcast signal based upon associated timestamps of each of said data packets.

4. The method of claim 3, further comprising the step of outputting an indication of a discrepancy between data packets of said digest of said broadcast signal and associated data packets of each said digest of each rebroadcast signal, which discrepancy exceeds a predetermined threshold.

5. The method of claim 3, wherein said timestamped data packets from said broadcast signal further comprise data encoded on line 21 of a Vertical Blanking Interval of said broadcast signal, and wherein said timestamped data packets from said rebroadcast signal further comprise data encoded on line 21 of a Vertical Blanking Interval of said rebroadcast signal.

6. The method of claim 3, wherein said timestamped data packets from said broadcast signal further comprise data collected from line 21 of a Vertical Blanking Interval of multiple frames of said broadcast signal, and said timestamped data packets from said rebroadcast signal further comprise data collected from line 21 of a Vertical Blanking Interval of multiple frames of said rebroadcast signal.

7. The method of claim 6, wherein each of said timestamped data packets is received by TCP/IP transmission.

8. The method of claim 3, wherein said comparing step further comprises:

collecting data packets in broadcast signal data storage bins and rebroadcast signal data storage bins;

determining a transmission time associated with transmission of a rebroadcast signal data packet;

searching broadcast signal data storage bins to locate a broadcast signal data packet corresponding to said oldest rebroadcast signal data packet;

computing a timestamp offset between transmission of said rebroadcast signal data packet and said corresponding broadcast signal data packet; and

comparing a plurality of rebroadcast signal data packets with a plurality of broadcast signal data packets having timestamps that are offset from said plurality of rebroadcast signal data packets by said timestamp offset.

9. In a video distribution network in which a master broadcast signal is distributed from a content producer to a plurality of rebroadcasters, said rebroadcasters transmitting a rebroadcast signal to intended recipients, a system for monitoring the conformity of said rebroadcast signal with said broadcast signal, the system comprising:

a content monitoring receiver computer configured for the reception of data from a plurality of video data transmitters, said content monitoring receiver computer having executable computer code stored thereon adapted to;

receive a broadcast signal from a broadcasting station;

receive at least one rebroadcast signal from at least one intended recipient of said broadcast signal;

compare at least a portion of said broadcast signal to at least a portion of said rebroadcast signal, wherein said portion of said broadcast signal comprises signal data that is native to said broadcast signal; and

determine whether said broadcast signal differs from said rebroadcast signal beyond a predetermined threshold.

10. The system of claim 9, said executable computer code being further adapted to:

notify a user of the occurrence of the existence of a difference between said broadcast signal and said rebroadcast signal beyond said predetermined threshold.

11. The system of claim 9, said executable computer code being further adapted to:

create a digest of said broadcast signal and a digest of each rebroadcast signal, wherein each of said digests comprises a plurality of timestamped data packets, and wherein said comparing step further comprises comparing data packets of said digest of said broadcast signal with data packets of each said digest of each rebroadcast signal based upon associated timestamps of each of said data packets.

12. The system of claim 11, said executable computer code being further adapted to output an indication of a discrepancy between data packets of said digest of said broadcast signal and associated data packets of each said digest of each rebroadcast signal, which discrepancy exceeds a predetermined threshold.

13. The system of claim 11, wherein said timestamped data packets from said broadcast signal further comprise data encoded on line 21 of a Vertical Blanking Interval of said broadcast signal, and wherein said timestamped data packets from said rebroadcast signal further comprise data encoded on line 21 of a Vertical Blanking Interval of said rebroadcast signal.

14. The system of claim 11, wherein said timestamped data packets from said broadcast signal further comprise data collected from line 21 of a Vertical Blanking Interval of multiple frames of said broadcast signal, and said timestamped data packets from said rebroadcast signal further comprise data collected from line 21 of a Vertical Blanking Interval of multiple frames of said rebroadcast signal.

15. The system of claim 14, wherein each of said timestamped data packets is received by TCP/IP transmission.

16. The system of claim 11, wherein said executable computer code adapted to compare at least a portion of said broadcast signal to at least a portion of said rebroadcast signal further comprises executable computer code adapted to:

collect data packets in broadcast signal data storage bins and rebroadcast signal data storage bins;

determine a transmission time associated with transmission of a rebroadcast signal data packet;

search broadcast signal data storage bins to locate a broadcast signal data packet corresponding to said oldest rebroadcast signal data packet;

compute a timestamp offset between transmission of said rebroadcast signal data packet and said corresponding broadcast signal data packet; and

compare a plurality of rebroadcast signal data packets with a plurality of broadcast signal data packets having timestamps that are offset from said plurality of rebroadcast signal data packets by said timestamp offset.