Audio frequency feature based method and system for marking and identifying broadcast television program

A technology of audio features and program identification, applied in electrical components, image communication, selective content distribution, etc., can solve problems such as infringement of user privacy, inconvenience to viewers, cumbersome operation, etc.

Active Publication Date: 2014-03-05
CHINA TELEVISION INFORMATION TECH BEIJINGCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Viewers need to manually input the names of TV channels and broadcast TV programs to the mobile terminal in order to enable the mobile terminal to enjoy interactive applications corresponding to broadcast TV programs. On the one hand, the operation is cumbersome, which brings inconvenience to the v

Method used

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  • Audio frequency feature based method and system for marking and identifying broadcast television program
  • Audio frequency feature based method and system for marking and identifying broadcast television program
  • Audio frequency feature based method and system for marking and identifying broadcast television program

Examples

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Embodiment 1

[0085] Such as figure 1 As shown, the present invention provides a kind of radio and television program identification and the method for identification based on audio feature, comprises the following steps:

[0086] S1, the server reads P program audio files according to the set rules {W 1 , W 2 ...W P}, for the program audio file W i Execute S1.1-S1.3 to get P program audio feature data packets {Z 1 ,Z 2 ...Z P};

[0087] Setting rules include one or a combination of the following rules:

[0088] Rule 1, the server only reads the program audio files contained in the program bound to the interactive application;

[0089] Rule 2, assuming that the broadcasting time of the program broadcasted by the TV is TA, the server reads the program at the time TB before the broadcasting time TA; wherein, the time interval from the time TB to the time TA is less than the preset value; for example, set The fixed value can be 24 hours. Before a certain program is played, the audio ...

Embodiment 2

[0106] On the basis of Embodiment 1, as a preferred implementation mode, the present invention also provides a method for segmentally matching recorded audio files and program audio files, thereby increasing the probability that recorded audio files are matched to the program audio files to which they belong , specifically, includes the following steps:

[0107](1) For the program audio file W i , perform the following steps:

[0108] program audio file W i Divided into a program audio segment {W with a duration of TW i1 , W i2 ...W ia}, there is overlap between the audio segments of two adjacent programs, and the overlapping duration is TS; taking the start time of the program as the origin, calculate the start time tp of the audio segments of each program, and get {tp i1 , tp i2 ...tp ia}, where the start time tp i2 is the program audio segment W i1 The time interval from the start time of program broadcasting, j ∈ (1, 2...a); program audio feature extraction is per...

Embodiment 3

[0133] The invention also provides a system for identifying and identifying radio and television programs based on audio features, including a server end and a mobile terminal.

[0134] (1) Server side

[0135] The server side includes:

[0136] The reading module is used to read P program audio files {W according to the set rules 1 , W 2 ...W p}; Also used to read the program audio file W i At q playback time points {T 1 ,T 2 ... T q}Respectively associated q interactive applications{Y 1 , Y 2 ...Y q}, wherein, the playback time point T i Apply Y to the interaction it is associated with i The startup time point; wherein, the setting rule according to which the reading module reads is: one or a combination of the following rules: Rule 1, the server only reads the content contained in the program bound to the interactive application Program audio file; rule 2, assuming that the broadcasting time of the program through the TV is TA, then the server reads the program ...

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Abstract

The invention provides an audio frequency feature based method and system for marking and identifying a broadcast television program. The method includes steps of extracting feature data of a program audio frequency file through a server-side to obtain program audio frequency feature data; merging the program audio frequency feature data, a program identifier and interactive applications, and the transmitting to a mobile terminal; recording a record audio signal of the program through the mobile terminal; extracting the audio frequency feature of the record audio signal to obtain record audio frequency feature data; determining whether there is program audio frequency feature data matching with the record audio frequency data in a program audio frequency feature database or not, and outputting a matched program identifier, playing time and corresponding interactive applications, if the program audio frequency feature data exists; and further, calculating time difference of the program and outputting the calculated time difference of the program. By adopting the audio frequency feature based method and system for marking and identifying the broadcast television program, a user can enjoy various interactive applications corresponding to a broadcast television program being watched at present through just easily operating the mobile terminal, and privacy of the user can be effectively protected so as to raise user experience.

Description

technical field [0001] The invention belongs to the technical field of radio and television, and in particular relates to a method and system for identifying and identifying radio and television programs based on audio features. Background technique [0002] With the development of broadcast TV technology and mobile terminal technology, mobile terminals have been widely used in broadcast TV interactive applications, and mobile terminals are regarded as the second screen of broadcast TV. While watching radio and television, viewers can turn on their mobile terminals to view clips or introduction information related to radio and television programs through the mobile terminals, and can also use mobile terminals to implement interactive applications such as audience scoring and quiz. [0003] For example: when the viewer is watching the broadcast TV program B broadcast by TV channel A through the TV, the viewer is participating in the interactive application service C pushed by...

Claims

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Application Information

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IPC IPC(8): H04N21/472H04N21/439H04N21/233H04N21/4627
Inventor 唐小军孙剑张昊
Owner CHINA TELEVISION INFORMATION TECH BEIJINGCO
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