Media monitoring, management and information system

Abstract

Systems and methods are provided for monitoring transmissions of media content (such as audio and audiovisual content) in order to obtain independent and objective data regarding the use of specific media content recordings or works within the transmissions. Processing and reporting of such data is provided in various ways to serve a variety of business needs. Methods for employing content identification technology to efficiently and automatically obtain reliable, accurate, and precise monitoring data are also disclosed. Various information products and services based on such monitoring systems are proposed.

Description

[0001]This application is a continuation of U.S. patent application Ser. No. 10 / 681,953 filed on Oct. 8, 2003, which claims priority from provisional application No. 60 / 418,597 filed on Oct. 15, 2002, the entire contents of which is hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]The present invention relates generally to systems for monitoring transmissions of media content (such as audio and audiovisual content) in order to obtain independent and objective data regarding the use of specific media content recordings or works within said transmissions. The invention also relates to the processing and reporting of such data in various ways to serve a variety of business needs. More particularly, the invention relates to methods for employing content identification technology to efficiently and automatically obtain reliable, accurate, and precise monitoring data. The invention further relates to methods for producing information products and services based on such mo...

AI Technical Summary

Benefits of technology

[0010]It is a principal object of this invention to provide reliable and comprehensive monitoring methods that overcome various deficiencies of the prior art systems. It is another object of the present invention to provide improved monitoring data through the use of redundant receivers and combined analysis of multiple copies of the same transmitted content. It is also an object of this invention to improve the accuracy or effectiveness of monitoring by measuring the quality of the received transmission or the transmission channel by measuring received transmission channel characteristics such as Signal-to-Noise-Ratio (SNR) or dropped packet rate. It is another object of this invention to differentiate between multiple points of origin of a composite transmission, such as the local, regional and national broadcast segments of a given networked television broadcast or an interstitially inserted advertisement in an Internet stream. It is a further object of the present invention to monitor the use of content in the presence of multiple transmission channel impairments. It should be noted that the term “transmission” as used herein will be understood to encompass, but not be limited to, broadcast programming, including satellite, network and cable television and radio programs, Internet broadcast programs, or any other type of program that is transmitted for reception by an audience. All or parts of such programming segments may reside on tangible storage media such as optical, magnetic, and electronic storage media for the purposes of storage, playback or distribution.

[0013]Extraction of multiple copies of embedded information can be used to improve the reliability of multimedia monitoring. For example, extraction of multiple copies of embedded information can be used in accordance with the invention to estimate the duration of multimedia content embedded with identification information.

[0016]The spacing of the extracted copies of embedded information can be used to estimate the boundaries of back-to-back encoded multimedia clips. Moreover, the effectiveness of monitoring can be enhanced by measuring received transmission channel characteristics such as Signal-to-Noise-Ratio (SNR) or dropped packet rate. This technique can provide a measure of the quality of at least one of a received transmission or a transmission channel.

[0017]The detectability metric can be used at the monitoring sites to improve the reliability of detection reports. Further, the detectability metric and measured transmission channel characteristics (such as Signal-to-Noise-Ratio (SNR) or dropped packet rate) can be used at the monitoring sites to improve the reliability of multimedia monitoring. It is also disclosed that the identification information may be re-embedded with a modified embedding strength based on the detectability metric.

Problems solved by technology

Such fingerprinting techniques have the disadvantage of requiring complicated search algorithms for comparing the fingerprints that are extracted from broadcast segments to a large database of previously stored fingerprints.

In addition, they require a sizeable database of stored fingerprints which only grows in size and complexity as the monitoring service is expanded to include newly produced content.

The primary disadvantage of such systems is their vulnerability to format conversion and filtering of the broadcast signals during distribution of the content.

For example, data inserted in the vertical blanking intervals (VBI) of an NTSC format video signal may be lost if the video signal is converted from NTSC to MPEG format.

Extraction of reliable identification information under more severe channel impairments, however, usually necessitates increasing the strength of the embedded watermark.

This, in turn, compromises visual and / or audio quality of the broadcast segment.

In addition, these systems usually fail to withstand combinations of such unintentional impairments or intentional attacks.

It is also possible to monitor both audio and audiovisual content through the use of audio watermarking, whereas image or video-based watermarking fails to address the monitoring of exclusively audio content.

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