JP6291119B1 - Delivery data creation device, advertisement data creation device, and data creation system - Google Patents

Abstract

Information necessary for replacing a broadcast advertisement is provided even when a header cannot be inserted into broadcast data. A distribution data creation device includes a program data acquisition unit for acquiring broadcast program data in which advertisement data is inserted between a plurality of main data, and a first advertisement of at least a part of the advertisement data. An extraction unit 45 that extracts superimposition data that is inserted by being superimposed on the audio data portion of the data; a specifying unit 46 that specifies the length of the first advertisement data based on the superposition data extracted by the extraction unit 45; A data replacement unit 47 that replaces the first advertisement data in which the data is inserted with another second advertisement data corresponding to the length of the first advertisement data specified by the specifying unit 46; [Selection] Figure 6

Description

  The present invention relates to a delivery data creation device, an advertisement data creation device, and a data creation system for delivering a broadcast program over a network.

  There are known services for distributing broadcast programs broadcasted by broadcast stations on the Internet. Patent Document 1 discloses a technique for replacing a broadcast advertisement included in a broadcast program distributed on the Internet.

Special table 2008-530944

  In the conventional technology, broadcast setting information (for example, broadcast time of a broadcast program, CM time between broadcast programs, etc.) is inserted into the header of the broadcast data, and the broadcast advertisement is replaced by referring to the broadcast setting information. It is assumed that However, for example, when performing simultaneous distribution (simultaneous parallel distribution) of a broadcast program using a network, the broadcast time and CM time of the broadcast program are not always determined before the start of distribution. Therefore, there is a problem that the broadcast advertisement cannot be appropriately replaced by the method of referring to the broadcast setting information, and the degree of freedom of advertisement replacement is reduced.

  The present invention has been made in view of these points, and it is an object of the present invention to appropriately replace a broadcast advertisement when a broadcast program is distributed over a network, and to increase the degree of freedom of advertisement replacement.

  A distribution data creation device according to a first aspect of the present invention includes a program data acquisition unit that acquires broadcast program data in which advertisement data is inserted between a plurality of main data, and at least a part of the advertisement data. An extraction unit that extracts the superimposed data that is inserted by being superimposed on the audio data portion of the first advertisement data, and a specifying unit that specifies the length of the first advertisement data based on the superimposed data extracted by the extraction unit; A data replacement unit that replaces the first advertisement data in which the superimposition data is inserted with another second advertisement data corresponding to the length of the first advertisement data specified by the specifying unit.

  The specifying unit specifies a length of a replaceable advertisement space based on a length of the first advertisement data into which superimposition data is inserted, and the data replacement unit is configured to insert the superimposition data. The first advertisement data may be replaced with the second advertisement data corresponding to the length of the replaceable advertisement space specified by the specifying unit.

  The data replacing unit replaces the first advertisement data with the second advertisement data after a predetermined time for the specifying unit to specify the length of the replaceable advertisement space has passed. The created distribution data may be distributed to a network.

The extraction unit may extract superimposition data inserted and superimposed on the audio data portion of the first advertisement data that can be replaced at least from the advertisement data.
The data replacement unit may not replace the advertisement data in which the superimposed data is not inserted in the advertisement data with the second advertisement data.

  The extraction unit extracts the superimposed data including information on whether the advertisement data can be replaced, and the data replacement unit indicates that the superimposed data can replace the advertisement data. The first advertisement data may be replaced only when the first advertisement data is present.

  The program data acquisition unit acquires the program data in which a plurality of the advertisement data is inserted between the plurality of main data, and the data replacement unit includes the second advertisement data among the plurality of advertisement data. The two or more consecutive first advertisement data that can be replaced with the second advertisement data may be replaced with the second advertisement data corresponding to the total length of the two or more first advertisement data.

  The data replacement unit replaces which first advertisement data is replaced with which second advertisement data after a predetermined maximum time has elapsed after acquiring the first advertisement data inserted after the main data. You may decide.

  When the superimposed data indicating the type of the second advertisement data that can be used for replacing the first advertisement data is superimposed on the audio data portion of the first advertisement data, the data replacement unit One or more second advertisement data may be selected from the plurality of second advertisement data based on the type indicated by the data.

The data replacement unit may replace the first advertisement data with predetermined music data when there is no second advertisement data that can replace the first advertisement data.
The data replacement unit may replace the first advertisement data with silence data before replacing the first advertisement data with the second advertisement data.

  The superimposition data is superimposed on the audio data portion of the first advertisement data, the extraction unit generates frequency domain data by performing Fourier transform on the audio data, and the specifying unit includes the frequency domain data The length of the first advertisement data indicated by the superimposed data may be specified by decoding data having a predetermined frequency included in the data.

  The specifying unit specifies the length of the first advertisement data indicated by the superimposed data by decoding data of the predetermined frequency in a frequency region lower than an audible frequency region included in the frequency region data. May be.

The extraction unit may generate the frequency domain data by sampling and Fourier transforming the audio data at a second sampling frequency lower than the first sampling frequency used for encoding the audio data. .
The extraction unit may specify a timing at which data of the predetermined frequency included in the frequency domain data is first detected as a start timing of the first advertisement data.

  A distribution data creation device according to a second aspect of the present invention includes a program data acquisition unit that acquires broadcast program data in which advertisement data is inserted between a plurality of main data, and at least a part of the advertisement data. An extraction unit that extracts the superimposed data that is inserted by being superimposed on the audio data portion of the first advertisement data, and a specifying unit that specifies the length of the first advertisement data based on the superimposed data extracted by the extraction unit; A data replacement unit that replaces the first advertisement data in which the superimposition data is inserted with silence data corresponding to the length of the first advertisement data specified by the specifying unit.

An advertisement data creation device according to a third aspect of the present invention superimposes an advertisement data acquisition unit that acquires advertisement data and superimposition data indicating a length of the advertisement data on a voice data portion of the advertisement data, and the superimposition data And a data superimposing unit that outputs the superimposed advertisement data after being superimposed.
The data superimposing unit may superimpose the superimposition data indicating whether the advertisement is replaceable on the advertisement data.

The data superimposing unit may superimpose the superimposing data indicating a type of advertising data that can be used for replacing the advertising data on the advertising data.
The data superimposing unit may superimpose the superimposition data having a predetermined frequency that decreases to 0 after the amplitude increases from 0 to the maximum value on the audio data portion of the advertisement data.

The data superimposing unit may superimpose a plurality of superimposed data, each having a different frequency, indicating the length of the advertisement data, on the audio data.
The data superimposing unit may superimpose the superimposing data having a frequency in a frequency region lower than an audible frequency region.

  A distribution data creation method according to a fourth aspect of the present invention includes a step of acquiring broadcast program data in which advertisement data is inserted between a plurality of main data executed by a computer, and at least one of the advertisement data Extracting the superimposed data inserted in the audio data portion of the first advertising data of the unit, and identifying the length of the first advertising data based on the superimposed data extracted in the extracting step And replacing the first advertisement data into which the superimposed data is inserted with another second advertisement data corresponding to the length of the first advertisement data identified in the identifying step.

  According to a fifth aspect of the present invention, there is provided a program, a program data acquisition unit that acquires broadcast program data in which advertisement data is inserted between a plurality of main data, and a first part of at least a part of the advertisement data. An extraction unit that extracts superimposed data inserted in a voice data portion of advertisement data, a specifying unit that specifies a length of the first advertisement data based on the superimposed data extracted by the extraction unit, and the superposition The first advertisement data into which data is inserted is caused to function as a data replacement unit that replaces another second advertisement data corresponding to the length of the first advertisement data specified by the specifying unit.

  A data creation system according to a sixth aspect of the present invention distributes via a network based on a broadcast data creation device that creates broadcast program data and the broadcast program data created by the broadcast data creation device. A data creation system comprising a distribution data creation device for creating distribution program data, wherein the broadcast data creation device includes a main data acquisition unit that acquires a plurality of main data for broadcasting, and the plurality of data An advertisement data acquisition unit that acquires first advertisement data in which superimposition data indicating the length of the advertisement data is superimposed on an audio data portion of the advertisement data as advertisement data to be inserted between the main data, and the first advertisement A transmitter for transmitting broadcast program data in which data is inserted between the plurality of main data to the distribution data creation device, and The data creation device includes a program data acquisition unit that acquires the broadcast program data in which advertisement data is inserted between a plurality of main data, and audio data of the first advertisement data that is at least part of the advertisement data An extraction unit that extracts superimposed data that is inserted by being superimposed on a part, a specifying unit that specifies the length of the first advertisement data based on the superimposed data extracted by the extraction unit, and the superimposed data are inserted And a data replacement unit that replaces the first advertisement data with another second advertisement data corresponding to the length of the first advertisement data specified by the specifying unit.

  According to the present invention, it is possible to appropriately replace a broadcast advertisement when a broadcast program is distributed over a network, and it is possible to increase the degree of freedom of advertisement replacement.

It is a figure which shows the structure of a data creation system. It is a figure explaining the process which replaces 1st advertisement data with 2nd advertisement data. It is a block diagram of an advertisement data creation apparatus. It is a figure for demonstrating a sine wave block. It is a figure which shows the structure of the data preparation apparatus for broadcasting. It is a figure which shows the structure of the data preparation apparatus for delivery. It is a block diagram of an extraction part. It is a figure which shows a mode that a spectrum value changes with progress of time. It is a flowchart which shows the flow of a process of the data preparation apparatus for delivery.

[Outline of data creation system S]
FIG. 1 is a diagram showing the configuration of the data creation system S. As shown in FIG. The data creation system S is a system for distributing a program broadcast by a broadcasting station via the Internet N. A user can view a program distributed on the Internet N using a data reproduction terminal 3 such as a smartphone.

The data creation system S includes a broadcast data creation device 1, an advertisement server 2, a data reproduction terminal 3, a distribution data creation device 4, an advertisement data creation device 5, and an advertisement bank 6.
The broadcast data creation apparatus 1 is an apparatus for distributing a broadcast program installed in a broadcast station. The broadcast data creation device 1 broadcasts program content that is program data in which advertisement data is inserted into the main data. In this specification, “main part” refers to a part other than an advertisement in a broadcast program, and “main part data” refers to data of the main part. The main data includes at least one of audio data and image data. “Advertisement data” is data of an advertisement part inserted between main data, and includes at least audio data.

  The advertisement data creation device 5 creates advertisement data for broadcasting by superimposing superimposed data on audio data portions of a plurality of advertisement data to be inserted into the main data when creating program data. For example, the advertisement data creation device 5 superimposes superimposition data indicating the length of the advertisement data on the replaceable advertisement data among the plurality of advertisement data.

  Specifically, the advertisement data creation device 5 uses a voice watermark, which is a technique for embedding information in a frequency region that cannot be heard by the human ear, with respect to the voice data portion of the replaceable first advertisement data. Superimposition data including at least one of information indicating the length of one advertisement data, information indicating whether or not replacement is possible, and information indicating the type of advertisement that can be used for replacement is superimposed and inserted. The replaceable advertisement is, for example, an advertisement that promotes a program such as a variety or a drama by a broadcasting station, and the advertisement that cannot be replaced is, for example, an advertisement that promotes information related to an advertiser's product or service. The advertisement that can be used for replacement is, for example, an advertisement related to the product or service of the same advertiser as the advertisement before replacement. In addition, for example, a group of advertisements that can be replaced is determined in advance for each company, such as “Ads A1, a2, and a3 of the company A can be replaced”, and the above-mentioned “ads that can be used for replacement”. The group may be designated by “information indicating the type of”.

  The advertisement bank 6 is a server that stores advertisement data for broadcasting created by the advertisement data creation device 5. The advertisement bank 6 provides broadcast advertisement data to the broadcast data creation apparatus 1 in response to a request from the broadcast data creation apparatus 1. Note that even if the advertisement has the same content / time, the possibility of replacement may differ depending on the broadcast program. Therefore, the advertisement bank 6 has a replaceable version (with superimposed data embedded) for the same content / time advertisement. 2 types) that cannot be replaced (those not embedded with superimposition data) may be stored.

  The broadcast data creation device 1 creates broadcast program data by inserting a plurality of advertisement data including superimposed data superimposed on the audio data portion of the advertisement data into the main data, and outputs the broadcast program data to the broadcast network B. . The broadcast data creation device 1 outputs the program data to the broadcast network B, so that the user can view the program content on the radio or television. The broadcast data creation device 1 transmits the program data output to the broadcast network B to the distribution data creation device 4 via the Internet N.

  The advertisement server 2 is a server that provides second advertisement data for replacing replaceable advertisement data (hereinafter referred to as first advertisement data) among the advertisement data included in the program data transmitted by the broadcast data creation device 1. . The advertisement server 2 provides the second advertisement data based on, for example, a request from the data reproduction terminal 3 or the distribution data creation device 4.

  The data reproduction terminal 3 is a communication terminal such as a smartphone and a tablet. The data reproduction terminal 3 receives the distribution data transmitted from the distribution data creation device 4 and reproduces the program content. For example, when the user selects program content that the user wants to view from a website, the data reproduction terminal 3 transmits a reproduction request for the selected program content to the distribution data creation device 4 via the Internet N. The data reproduction terminal 3 receives the distribution data created by the distribution data creation device 4 and reproduces the program content.

  The distribution data creation device 4 creates distribution data for distribution over the Internet N based on the program data input from the broadcast data creation device 1. Specifically, the distribution data creation device 4 extracts the superimposition data superimposed on the audio data portion of the replaceable first advertisement data from the advertisement data included in the program data using the discrete Fourier transform. .

  The distribution data creation device 4 specifies the length of the first advertisement data that can be replaced based on the extracted superimposed data. The distribution data creation device 4 replaces the first advertisement data with another advertisement data corresponding to the specified length (hereinafter referred to as second advertisement data). The distribution data creation device 4 transmits distribution data, which is program data obtained by replacing the first advertisement data with the second advertisement data, to the data reproduction terminal 3 via the Internet N.

  In this way, by replacing only the replaceable first advertisement data among the advertisement data inserted when the program content is broadcasted with the second advertisement data and distributing it to the Internet, the advertiser's desire is taken into consideration. However, the effect of the advertisement can be increased. Also, by inserting information indicating that the advertisement can be replaced in an overlapping manner when the program content is produced, it is possible to save time and effort for editing the program content for Internet distribution. In FIG. 1, the broadcast data creation device 1 and the distribution data creation device 4 are connected via the Internet N. However, when both are managed by the same business operator, etc. It may be connected by a closed network (the same applies to the advertisement server 2).

  FIG. 2 is a diagram illustrating a process of replacing the first advertisement data with the second advertisement data. The broadcast program data shown in FIG. 2 is program data created by the broadcast data creation device 1, and the replaced program data is delivery data created by the delivery data creation device 4. In the example shown in FIG. 2A, superimposition data indicating that replacement is possible is superimposed and inserted into the broadcast advertisement 1 and the broadcast advertisement 3. Here, it is assumed that the length of one advertisement is 30 seconds.

  The distribution data creation device 4 extracts the superimposed data superimposed on the broadcast advertisement 1 and specifies that the replaceable length is “30 seconds” based on the extracted superimposed data. The distribution data creation device 4 acquires the replacement advertisement 1 corresponding to the identified length of “30 seconds” from the advertisement server 2 and replaces the broadcast advertisement 1 with the replacement advertisement 1.

  The distribution data creation device 4 extracts the superimposition data superimposed on the next broadcast advertisement 3 and does not do anything because the superimposition data is not superimposed on the broadcast advertisement 2, and can be replaced. Is specified as “30 seconds”. Then, the distribution data creation device 4 acquires the replacement advertisement 2 corresponding to the length of “30 seconds” from the advertisement server 2 and replaces the broadcast advertisement 3 with the replacement advertisement 2.

  Subsequently, in the example illustrated in FIG. 2B, superimposition data indicating that replacement is possible is superimposed and inserted into the broadcast advertisement 1 and the broadcast advertisement 2. The distribution data creation device 4 first extracts the superimposed data superimposed on the broadcast advertisement 1 and extracts the superimposed data superimposed on the subsequent broadcast advertisement 2. The distribution data creation device 4 does nothing for the broadcast advertisement 3 on which the superimposed data is not superimposed. The distribution data creation device 4 specifies that the length of the replaceable advertisement space is “60 seconds”, which is the sum of the broadcast advertisement 1 and the broadcast advertisement 2. Then, the distribution data creation device 4 acquires the replacement advertisement 3 corresponding to the length of “60 seconds” from the advertisement server 2 and replaces the broadcast advertisement 1 and the broadcast advertisement 2 with the replacement advertisement 3.

  “Length of replaceable advertisement space” is the length of time during which the first advertisement data can be replaced. When a plurality of continuous first advertisement data can be replaced, the length of the replaceable advertisement space May be the length of one first advertisement data, or may be the total length of a plurality of first advertisement data. However, in the case where a plurality of consecutive first advertisement data can be replaced, the “replaceable advertisement space length” is set to the total length of the plurality of first advertisement data, thereby replacing the advertisement. The degree of freedom can be further increased.

In this way, the distribution data creation device 4 can prevent the replacement of advertisements that are not permitted to be replaced among the broadcast advertisements included in the broadcast program data by replacing only the replaceable advertisements. it can.
Hereinafter, the configuration and operation of the advertisement data creation device 5, the broadcast data creation device 1, and the distribution data creation device 4 will be described in detail.

[Processing Operation of Advertising Data Creation Device 5]
First, a process in which the advertisement data creation device 5 superimposes superimposition data using the audio watermark technology will be described. FIG. 3 is a configuration diagram of the advertisement data creation device 5. The advertisement data creation device 5 superimposes the superimposition data on the audio data portion of the replaceable first advertisement data using an audio watermark technique. The superimposition data includes information indicating the length of the advertisement. The superimposed data may include data indicating that the advertisement on which the superimposed data is superimposed is a replaceable first advertisement.

  The advertisement data creation device 5 uses the metadata of the first advertisement data that can be replaced, the synchronization signal indicating the timing of embedding the bit information, and the detection section identification signal indicating the section on which the superimposed data is superimposed as the first superimposed data. It is superimposed on the audio data part of the advertisement data. The advertisement data creation device 5 includes an advertisement data acquisition unit 50, a filter processing unit 51, a bit processing unit 52, a sine wave generation unit 53, a synchronization signal generation unit 54, a detection section signal generation unit 55, and a data superimposition unit 56.

  The advertisement data acquisition unit 50 acquires the input advertisement data. The advertisement data acquisition unit 50 inputs advertisement data to the filter processing unit 51 and inputs metadata included in the advertisement data to the bit processing unit 52.

  The filter processing unit 51 removes the frequency band component of the sine wave to be superimposed from the audio data of the first advertisement data on which the superimposed data is superimposed from the advertisement data input from the advertisement data acquisition unit 50. Specifically, when using the low frequency region as the frequency band of the sine wave to be superimposed, the filter processing unit 51 reduces the frequency component below the predetermined cutoff frequency by HPS (High -Pass Filter: Removes low frequency components from audio data using a high pass filter. On the other hand, when using the high frequency region as the frequency band of the sine wave to be superimposed, the filter processing unit 51 LPS (Low-Pass Filter: LPS) that decreases a frequency region component equal to or higher than a predetermined cutoff frequency according to a predetermined attenuation amount. Using a low-pass filter, high-frequency components are removed from the audio data. The filter processing unit 51 inputs the audio data subjected to the filter processing to the data superimposing unit 56.

  The bit processing unit 52 is a bit corresponding to the number of bits (for example, 6 bits) for superimposing the metadata of the first advertisement data on which the superimposed data is superimposed on the audio data, among the metadata input from the advertisement data acquiring unit 50. Divide into units. The bit processing unit 52 sets the bit state to the sine wave generation unit 53 corresponding to each digit of the bit at a timing corresponding to the length of the sine wave block corresponding to the audio data for one bit of the superimposed data. In response, a bit of “1” or “0” is input. Details of the sine wave block will be described later.

  For example, the bit processing unit 52 inputs the first bit to the sine wave generation unit 53 corresponding to the first bit, and inputs the second bit to the sine wave generation unit 53 corresponding to the second bit. To do. The bit processing unit 52 inputs a bit of “1” to the synchronization signal generation unit 54 at a timing corresponding to the length of the sine wave block. The bit processing unit 52 inputs a bit of “1” to the detection interval signal generation unit 55 while the superimposed data is superimposed on the audio data.

  Each sine wave generation unit 53 corresponding to each digit of the bit generates a sine wave having a predetermined frequency and length based on the “1” or “0” bit input from the bit processing unit 52. Specifically, each sine wave generation unit 53 generates a sine wave block when “1” is input from the bit processing unit 52, and nothing is generated when “0” is input from the bit processing unit 52. do not do. Each sine wave generation unit 53 performs a fade process for attenuating the amplitude at the start and end points of the sine wave to prevent noise, and inputs a sine wave block in an audio data format to the data superimposing unit 56.

  FIG. 4 is a diagram for explaining the sine wave block. The solid line in FIG. 4 shows one sine wave block, which is composed of a sine wave having a frequency corresponding to the bit position of the superimposed data. The sine wave block has a waveform for a plurality of periods that change so as to decrease to 0 after the amplitude of the sine wave of a predetermined frequency increases from 0 to the maximum value. That is, the envelope indicated by the broken line in FIG. 4 decreases to 0 after the amplitude increases from 0 to the maximum value. The maximum value can be set to an arbitrary value at the design stage.

  As described above, since the amplitude of the sine wave included in one sine wave block increases from 0 to the maximum value and then changes to decrease to 0, it is difficult for a person to recognize the superimposed data. it can. Further, the amplitude of the sine wave included in one sine wave block changes with the passage of time, so that the distribution data creation device 4 is detected within the window for detecting the superimposed data with the passage of time. The size of the superimposed data component changes. As a result, the distribution data creation device 4 can specify whether the sine wave block corresponds to “1” or “0”.

  The synchronization signal generator 54 generates a sine wave block based on the “1” bit input from the bit processor 52. The synchronization signal generator 54 generates a sine wave block including a sine wave having a frequency (Fs [Hz]) for the synchronization signal. The synchronization signal generating unit 54 inputs the generated sine wave block to the data superimposing unit 56.

  The detection interval signal generator 55 generates a sine wave block while the bit “1” is input from the bit processor 52. The detection section signal generation unit 55 generates a sine wave block including a sine wave having a frequency (F0 [Hz]) for the detection section signal. The detection section signal generation unit 55 inputs the generated sine wave block to the data superimposition unit 56.

  By the way, as described above, the distribution data creation device 4 extracts the superimposed data superimposed on the audio data portion of the first advertisement data using the discrete Fourier transform. Since the frequency included in the output after the discrete Fourier transform is discrete, the frequency component between the frequency k1 and the frequency k2 is included in the spectrum of the frequency k1 or the frequency k2 or the spectrum of the discrete frequency adjacent to the spectrum. Is done. That is, the spectrum components are blurred. Therefore, the frequency of the superimposed sine wave is matched with each frequency of the discrete frequency spectrum in advance, so that the frequency can be separated with high accuracy without causing the spectral component of the discrete frequency to blur.

Here, the number of samples in the Fourier transform block when the distribution data creation device 4 performs the discrete Fourier transform is N (N is a power of 2), and the identification number of each frequency included in the output of the discrete Fourier transform is k (k Is an integer greater than or equal to 0 and less than N−1), the normal angular frequency is ω = 2πk / N, the non-normal angular frequency is Ω = 2πf, the sampling period is T _s , and the sampling frequency is f _s . In this case, since ω = ΩT _s , each frequency of the discrete frequency spectrum is f = kf _s / N. Therefore, each sine wave generation unit 53, synchronization signal generation unit 54, and detection interval signal generation unit 55 is predetermined for each of the signal corresponding to each bit position, the synchronization signal, the detection interval identification signal, and the like. , F = kf _s / N [Hz] is generated at any frequency.

  Each sine wave generation unit 53, the synchronization signal generation unit 54, and the detection section signal generation unit 55 generate, for example, a sine wave in a low frequency region having a predetermined frequency or less. Since the frequency region that cannot be heard by human ears is wider in the high frequency region than in the low frequency region, the amount of data can be increased by converting the superimposed data into the high frequency region. However, in the high frequency region, when data passes through a plurality of transmission devices (not shown), some data is deleted due to data compression including the codec, and the superimposed data superimposed on the audio data May not be able to be decrypted. Therefore, the sine wave generated by the synchronization signal generation unit 54 and the detection interval signal generation unit 55 is set to a low frequency range, thereby decoding the superimposed data superimposed on the audio data without being affected by the data compression. Can do.

In this case, when the sampling frequency N of the Fourier transform block is set to 4096 and the sampling frequency f _s is set to 48 kHz used in the field of broadcasting, the discrete frequency spectrum is calculated to be 11.71875 Hz when k = 1. , 23.4375 Hz when k = 2, 35.15625 Hz when k = 3, and 46.8750 Hz when k = 4. When the audible region is “20 Hz” or more, each sine wave generation unit 53, the synchronization signal generation unit 54, and the detection section signal generation unit 55 can use only a frequency corresponding to k = 1. , Lack of frequency. Accordingly, each sine wave generation unit 53, synchronization signal generation unit 54, and detection section signal generation unit 55 generates a sine wave corresponding to a sampling frequency lower than 48 kHz used in the field of broadcasting. For example, when the sampling frequency is 4 kHz, the low frequency region is obtained by the above formula, 0.976563 Hz when k = 1, 1.9512525 when k = 2, and 2.929688 Hz when k = 3. , K = 4, 3.90625 Hz, etc., and many different sine waves can be superimposed on the audio data.

  The data superimposing unit 56 superimposes superimposition data having a predetermined frequency that decreases to 0 after the amplitude of the envelope increases from 0 to the maximum value on the audio data portion of the first advertisement data. Specifically, the data superimposing unit 56 receives the sine wave block input from the sine wave generating unit 53 and the synchronization signal generating unit 54 in the audio data portion of the first advertisement data input from the filter processing unit 51. The superimposed sine wave block and the sine wave block input from the detection section signal generation unit 55 are superimposed to generate superimposed advertisement data. More specifically, the data superimposing unit 56 sets the start point of each sine wave block in the audio data format input from each sine wave generation unit 53, the synchronization signal generation unit 54, and the detection section signal generation unit 55 as a start point. Add to the audio data with the axes aligned. The data superimposing unit 56 outputs the superimposed advertisement data after the superimposed data is superimposed. For example, the data superimposing unit 56 superimposes superimposition data of a frequency in a frequency region lower than the audible frequency region.

  When the superimposition data includes 5-bit data, the data superimposition unit 56 receives the first bit of the frequency F1 [Hz] following the detection section identification signal of the frequency F0 [Hz] and the synchronization signal of the frequency Fs [Hz]. Superimposed data sequentially including a signal, a second bit signal of frequency F2 [Hz], a third bit signal of frequency F3 [Hz], a fourth bit signal of frequency F4 [Hz], and a fifth bit signal of frequency F5 [Hz] The superimposed advertisement data including is output. Note that the superimposed advertisement data may not include the detection section identification signal.

  The data superimposing unit 56 superimposes a plurality of superimposed data, each having a different frequency, indicating the length of the first advertisement data, on the audio data. In addition, the data superimposing unit 56 may superimpose superimposing data indicating the type of second advertising data that can be used for replacing the first advertising data on the audio data. For example, when the first advertisement data includes an advertisement of company A, the data superimposing unit 56 superimposes the superimposed data indicating that the first advertisement data is an advertisement of company A on the audio data portion of the first advertisement data. . By doing in this way, when the distribution data creation device 4 replaces the first advertisement data with other advertisement data, the second advertisement data that can be replaced can be selected.

[Configuration of Broadcast Data Creation Device 1]
FIG. 5 is a diagram showing a configuration of the broadcast data creation apparatus 1. The main data and the advertisement data are input to the broadcast data creation apparatus 1. The main data input to the broadcast data creation device 1 may be, for example, any of voices produced by performers such as actors and announcers, and image data (still images or moving images) of the performers. Although not shown, the main data acquisition unit 11 includes a first main data acquisition unit that acquires content (music pieces, video works, etc.) created in advance as main data, and content that has not been created in advance (for example, A second main data acquisition unit that acquires the main data as main data, and the main data may be input to the switching unit 14 from each. The advertisement data input to the broadcast data creation apparatus 1 is selected in order from a large number of advertisement data stored in advance.

The broadcast data creation apparatus 1 includes a main data acquisition unit 11, an advertisement data acquisition unit 12, a composition data acquisition unit 13, a switching unit 14, and a transmission unit 15.
The main data acquisition unit 11 acquires a plurality of input main data for broadcasting, and inputs the acquired main data to the switching unit 14.
The advertisement data acquisition unit 12 acquires advertisement data to be inserted between a plurality of inputted main data. The advertisement data acquisition unit 12 inputs the acquired advertisement data to the switching unit 14.

  The organization data acquisition unit 13 acquires organization data relating to program organization such as the broadcast time of the main data, the insertion timing of the advertisement data, and the broadcast time of the advertisement data. The knitting data acquisition unit 13 controls the switching unit 14 based on the acquired knitting data.

  The switching unit 14 inputs the main program data input from the main program data acquisition unit 11 to the transmission unit 15 based on the program data input from the program data acquisition unit 13 or the switching operation of the program producer, or acquires advertisement data. Whether to input the advertisement data input from the unit 12 to the transmission unit 15 is switched. In this way, the switching unit 14 can input program data in which advertisement data is inserted between a plurality of main data to the transmission unit 15. For example, in the case of live broadcasting, the switching unit 14 outputs the main data in the program data and the first advertisement data on which the superimposed data is superimposed to the transmission unit 15 in accordance with the switching operation by the organization data or the program producer.

  The transmission unit 15 outputs the program data input from the switching unit 14 (in which advertisement data is inserted between a plurality of main data) to the broadcast network B. The transmission unit 15 transmits the program data output to the broadcast network B to the distribution data creation device 4 via the Internet N.

[Configuration of Distribution Data Creation Device 4]
FIG. 6 is a diagram illustrating a configuration of the distribution data creation device 4. The distribution data creation device 4 includes a communication unit 41, a storage unit 42, and a control unit 43.
The communication unit 41 has a communication interface for accessing the Internet N.

The storage unit 42 includes a storage medium such as a ROM (Read Only Memory) and a RAM (Random Access Memory). The storage unit 42 stores a program executed by the control unit 43.
The control unit 43 is, for example, a CPU (Central Processing Unit), and functions as a program data acquisition unit 44, an extraction unit 45, a specification unit 46, and a data replacement unit 47 by executing a program stored in the storage unit 42. .

  The program data acquisition unit 44 acquires broadcast program data in which advertisement data is inserted between a plurality of main data. Specifically, the program data acquisition unit 44 acquires program data in which a plurality of advertisement data is inserted between a plurality of main data from the broadcast data creation device 1 via the communication unit 41.

  When the program data acquisition unit 44 acquires the program data from the broadcast data creation device 1, the program data acquisition unit 44 stores the acquired program data in the storage unit 42. The program data acquisition unit 44 acquires program data from the storage unit 42 and inputs the acquired program data to the extraction unit 45.

  The extraction unit 45 extracts superimposition data inserted and superimposed on the audio data portion of at least a part of the first advertisement data from the advertisement data. For example, the extraction unit 45 extracts superimposition data inserted and superimposed on the audio data portion of the first advertisement data that can be replaced at least from the advertisement data. Specifically, the extraction unit 45 generates frequency domain data by performing Fourier transform on the audio data, and superimposition data included in the generated frequency domain data and a superimposition start timing indicating a start timing at which the superimposition data is superimposed. Extract. The process in which the extraction part 45 produces | generates frequency domain data is mentioned later. The extraction unit 45 inputs the extracted superposition data to the specifying unit 46 and inputs the extracted superposition start timing to the data replacement unit 47.

  The specifying unit 46 specifies the length of the first advertisement data based on the superimposed data extracted by the extracting unit 45. Specifically, the specifying unit 46 specifies the length of the first advertisement data indicated by the superimposed data by decoding data having a predetermined frequency included in the frequency domain data. Further, the specifying unit 46 specifies the length of the replaceable advertisement space based on the specified length of the first advertisement data. For example, the specifying unit 46 specifies the length of the advertisement space that can be replaced after a standard time (for example, 120 seconds) when the advertisement data is continuously broadcast has elapsed.

  In the example of FIG. 2A, the identifying unit 46 determines that the length of the replaceable advertising space is based on the respective superimposed data extracted from the broadcast advertisement 1 and the broadcast advertisement 3 by the extraction unit 45. 30 seconds ". In the example of FIG. 2B, the specifying unit 46 determines the length of the replaceable advertisement frame based on the respective superimposed data extracted from the broadcast advertisement 1 and the broadcast advertisement 2 that the extraction unit 45 continues. Specify a total of “60 seconds”. The specifying unit 46 inputs the length of the specified replaceable advertisement space to the data replacing unit 47.

  The data replacement unit 47 replaces the first advertisement data in which the superimposed data is inserted with another second advertisement data corresponding to the length of the replaceable advertisement space identified by the identifying unit 46. The data replacement unit 47 creates distribution data by replacing the first advertisement data with the second advertisement data after a predetermined time for specifying the length of the advertisement space that can be replaced by the specifying unit 46, Distribution data is distributed to the network via the communication unit 41. The predetermined time is a time required for the data replacement unit 47 to specify the length of the first advertisement data to be replaced, for example, a standard time when the advertisement data is continuously broadcast 120. Seconds.

  For example, if the first advertisement data that can be replaced in the example of FIG. 2 (the length of each advertisement is 30 seconds) continues five times, 120 seconds elapse at the time of the fourth first advertisement. . At this time, the identifying unit 46 identifies the replaceable advertisement frame as 120 seconds, and the data replacing unit 47 replaces the second advertisement data corresponding to the 120 second frame with the first advertisement data (at this time). The second advertisement data is not necessarily limited to 120 seconds for only one advertisement, and may be a combination of advertisements that total 120 seconds, such as 30 seconds, 30 seconds, and 60 seconds. The data replacement unit 47 can replace the first advertisement data with the second advertisement data after waiting for a short time necessary for specifying the length of the advertisement space that can be replaced by the specifying unit 46 in this way. It is suitable for simultaneous distribution of broadcast programs.

  The data replacement unit 47 first notifies the advertisement server 2 of the length of the replaceable advertisement space specified by the specification unit 46 via the communication unit 41, and has various lengths managed by the advertisement server 2. Among the advertisements, an advertisement having a length matching the length of the replaceable advertisement space is acquired as the second advertisement data. Then, the data replacement unit 47 adds the first advertisement data in which the superimposition data is inserted in the program data to the second advertisement data acquired from the advertisement server 2 in accordance with the superimposition start timing input from the extraction unit 45. Replace.

  In the example of FIG. 2A, the data replacement unit 47 sends the second advertisement data corresponding to the length “30 seconds” of the broadcast advertisement 1 and the broadcast advertisement 3 specified by the specifying unit 46 to the advertisement server 2. The broadcast advertisement 1 and the broadcast advertisement 3 that are the first advertisement data from which the extraction unit 45 has extracted the superimposed data are replaced with the acquired second advertisement data.

  The data replacement unit 47 does not replace the advertisement data in which the superimposed data is not inserted in the advertisement data with the second advertisement data. In the example of FIG. 2A, the data replacement unit 47 does not replace the broadcast advertisement 2 into which the superimposed data is not inserted with the second advertisement data. In this way, the data replacement unit 47 replaces only the first advertisement data in which the superimposition data is inserted with the second advertisement data, so that the replacement is not permitted in the advertisement data included in the program data. It is possible to prevent the advertisement data from being replaced.

  The data replacement unit 47 corresponds to the total length of the two or more first advertisement data, among the plurality of advertisement data, the two or more consecutive first advertisement data that can be replaced with the second advertisement data. You may replace with 2nd advertisement data. In the example of FIG. 2B, the data replacement unit 47 first advertises the second advertisement data corresponding to the total length of the continuous broadcast advertisement 1 and the broadcast advertisement 2 via the communication unit 41. Obtain from the server 2. Then, the data replacement unit 47 replaces the portion of the program data that is a combination of the broadcast advertisement 1 and the broadcast advertisement 2 into which the superimposed data is inserted, with the acquired second advertisement data. Here, the second advertisement data acquired from the advertisement server 2 may be one second advertisement data like the replacement advertisement 3 of “60 seconds” indicated by the replaced program data in FIG. Alternatively, the second advertisement data may be a combination of a replacement advertisement of “20 seconds” and a replacement advertisement of “40 seconds”.

  The data replacement unit 47 acquires which first advertisement data is inserted into the second advertisement data after a predetermined maximum time (for example, 120 seconds) has elapsed after acquiring the first advertisement data inserted after the main data. You may decide whether to replace. This maximum time preferably corresponds to the longest broadcast time of the second advertisement data among the second advertisement data used for replacement. By doing in this way, even if it is a case where the data replacement part 47 replaces the 1st advertisement data with the 2nd advertisement data in real time in simulcast, for example, a plurality of 1st advertisement data is made into the longest 2nd advertisement data. It can be replaced.

  By the way, when the data creation apparatus 4 for distribution replaces an advertisement, the case where there is no 2nd advertisement data corresponding to the length of the advertisement data replaced with the advertisement server 2 can be considered. Therefore, the data replacing unit 47 replaces the first advertisement data with predetermined music data when there is no second advertisement data that can replace the first advertisement data. Specifically, when the program data is radio broadcast program data, the data replacement unit 47 replaces the first advertisement data with predetermined music data. In addition, when the program data is TV broadcast program data, the data replacement unit 47 replaces the first advertisement data with predetermined music data and predetermined image or video data.

  In addition, when the data replacement unit 47 replaces the first advertisement data with the second advertisement data, if the start or end timing of the second advertisement data after replacement is shifted from the start or end of the first advertisement data, the first advertisement Data voice may be heard by the user. Therefore, the data replacement unit 47 replaces the first advertisement data with silence data before replacing the first advertisement data with the second advertisement data. Specifically, before replacing the second advertisement data with the second advertisement data, the data replacing unit 47 is silent corresponding to the length of the first advertisement data identified by the identifying unit 46 with the first advertisement data inserted therein. Replace with data. The data replacement unit 47 transmits distribution data including the replaced silence data and second advertisement data to the data reproduction terminal 3 via the communication unit 41.

  In addition, when the superimposition data indicating the type of the second advertisement data that can be used for replacement of the first advertisement data is superimposed on the audio data portion of the first advertisement data, the data replacement unit 47 Based on the type shown, one or more second advertisement data for replacement may be selected from the plurality of second advertisement data. When the superimposition data indicates the company name, the data replacement unit 47 requests the second advertisement data of the company indicated by the superimposition data from the advertisement server 2, and adds the second advertisement data acquired from the advertisement server 2 to the second advertisement data. 1 Replace the advertisement data. By doing in this way, it becomes possible to distribute an advertisement with high appeal to the user who browses the distribution data while providing profits to the advertiser.

  In the above description, the configuration in which the data replacement unit 47 is included in the distribution data creation device 4 is exemplified. However, the data replacement unit 47 is included in devices other than the distribution data creation device 4. Also good. For example, the first advertisement data extracted by the extraction unit 45, and the identification unit, which are executed by the distribution data creation device 4 managed by the first business operator, execute the processing of the program data acquisition unit 44, the extraction unit 45, and the identification unit 46 Information indicating the length of the first advertisement data specified by 46 or the length of the replaceable advertisement space may be transmitted to a server as the data replacement unit 47 managed by the second operator.

[Processing Operation of Extraction Unit 45]
Next, a process in which the extraction unit 45 of the distribution data creation device 4 generates frequency domain data will be described. FIG. 7 is a configuration diagram of the extraction unit 45. As described above, the extraction unit 45 generates frequency domain data by performing Fourier transform on the audio data. The extraction unit 45 includes a downsampling unit 451, an overlap processing unit 454, a frequency domain conversion unit 455, a detection section detection unit 456, a synchronization signal detection unit 457, a bit detection unit 458, a bit combination unit 459, and a determination unit 460. .

The down-sampling unit 451 performs processing for lowering the sampling frequency on the audio data of the program data input from the program data acquisition unit 44 when the frequency of the sine wave is in the low frequency range. The downsampling unit 451 includes a filter processing unit 452 and a thinning unit 453.
The filter processing unit 452 performs filter processing on the audio data of the program data input from the program data acquisition unit 44 using LPF in accordance with the Nyquist frequency in order to prevent aliasing. Audio data is input to the thinning unit 453.

  The thinning-out unit 453 performs processing to match the sampling frequency corresponding to the low-frequency range frequency superimposed on the audio data by the data superimposing unit 56 of the broadcast data creation device 1. Specifically, the thinning-out unit 453 performs processing for lowering the audio data input from the filter processing unit 452 to a second sampling frequency lower than the first sampling frequency used for encoding the audio data. . For example, when the first sampling frequency is 48 kHz and the second sampling frequency is 4 kHz, the thinning-out unit 453 performs processing to lower the sampling frequency of the audio data input from the filter processing unit 452 from 48 kHz to 4 kHz. The thinning unit 453 inputs the audio data subjected to the downsampling process to the overlap processing unit 454.

  The overlap processing unit 454 generates a Fourier transform block based on the audio data input from the overlap processing unit 454 and stores it in the storage unit 42. At this time, the overlap processing unit 454 generates a Fourier transform block by overlapping the Fourier transform block generated before the Fourier transform block to be generated and stored in the storage unit 42 by a predetermined number of samples. To do. The overlap processing unit 454 inputs the generated plurality of Fourier transform blocks to the frequency domain transform unit 455.

  The frequency domain transform unit 455 generates frequency domain data by performing Fourier transform on the audio data. Specifically, the frequency domain transform unit 455 generates frequency domain data by sampling and Fourier transforming audio data at a second sampling frequency lower than the first sampling frequency used for encoding the audio data. To do. More specifically, the frequency domain transforming unit 455 performs a discrete frequency spectrum (amplitude component value) obtained by transforming the time domain into the frequency domain using Fourier transform on the Fourier transform block input from the overlap processing unit 454. ) Is generated.

  The spectrum of the discrete frequency includes the spectrum value indicating the metadata of the first advertisement data that can be replaced, the synchronization signal, and the detection section identification signal. The frequency domain conversion unit 455 converts the generated frequency domain data into each bit corresponding to the sine wave generated by the detection interval detection unit 456, the synchronization signal detection unit 457, and each sine wave generation unit 53 according to the spectrum value. Input to the detection unit 458.

  For example, the frequency domain conversion unit 455 inputs a spectrum value corresponding to the detection interval signal in the frequency domain data to the detection interval detection unit 456 at every predetermined time. Similarly, the frequency domain conversion unit 455 inputs, for example, a spectrum value corresponding to the synchronization signal to the synchronization signal detection unit 457, and sets a spectrum value corresponding to the metadata of the first advertisement data that can be replaced to each bit detection unit 458. To enter.

  The detection section detection unit 456 specifies the timing at which data of a predetermined frequency included in the frequency domain data is first detected as the start timing of the first advertisement data. Specifically, the detection section detection unit 456 determines that the timing at which the spectrum value input from the frequency domain conversion unit 455 exceeds a predetermined threshold is the start timing of the detection section. The detection section detection unit 456 determines that the period during which the spectrum value input from the frequency domain conversion unit 455 exceeds a predetermined threshold is the detection period.

  FIG. 8 is a diagram illustrating how the spectrum value changes with time. FIG. 8A shows a spectrum value input to the detection section detection unit 456. As shown in FIG. 8A, the detection section detection unit 456 determines that a section in which the spectrum value of the frequency for detection section detection exceeds a predetermined threshold is a detection section. When the detection section is specified, the detection section detection unit 456 notifies the synchronization signal detection unit 457. The detection section detection unit 456 stores the superimposition start timing indicating the time when the threshold is exceeded in the storage unit 42 and inputs the superimposition start timing to the determination unit 460.

  Based on the notification from the detection section detection unit 456, the synchronization signal detection unit 457 detects a spectrum value exceeding the predetermined threshold in the spectrum value of the frequency for the synchronization signal input from the frequency domain conversion unit 455. When the synchronization signal detection unit 457 detects a spectrum value exceeding a predetermined threshold value, the synchronization signal detection unit 457 continuously obtains the maximum value of the spectrum value exceeding the threshold value and counts the number of overlapping blocks of the continuous spectrum value. The synchronization signal detection unit 457 determines that it is a synchronization signal when the total number of blocks is within a predetermined range.

  FIG. 8B shows a spectrum value input to the synchronization signal detection unit 457. For example, assume that the number of overlapping blocks of consecutive spectral values is “10”. In this case, as shown in FIG. 8B, the synchronization signal detection unit 457 obtains the peak value of the waveform that is the maximum value for the spectrum value exceeding the threshold value in the detection interval. Then, the synchronization signal detection unit 457 determines that the synchronization signal is a synchronization signal because the number of overlapping blocks of consecutive spectrum values is seven. When the synchronization signal detection unit 457 determines that the signal is the spectrum value synchronization signal input to the synchronization signal detection unit, the synchronization signal detection unit 457 notifies the bit detection unit 458 of the time information determined to be the synchronization signal.

  Each of the bit detection units 458 corresponding to the sine wave generated by each sine wave generation unit 53 is input from the frequency domain conversion unit 455 at the time indicated by the time information based on the time information notified from the synchronization signal detection unit 457. It is determined whether the measured spectrum value exceeds a predetermined threshold. When the bit detection unit 458 determines that the spectrum value exceeds the predetermined threshold, the bit detection unit 458 inputs a bit of “1” to the bit combination unit 459, and when it determines that the spectrum value does not exceed the predetermined threshold, “0”. Are input to the bit combination unit 459.

  FIG. 8C shows a spectrum value input to the bit detection unit 458. As shown in FIG. 8C, the bit detection unit 458 has a spectrum value exceeding the threshold value at the first time exceeding the threshold value shown in FIG. 8B notified from the synchronization signal detection unit 457. The bit “1” is input to the bit combination unit 459. Since the spectrum value does not exceed the threshold value at the second time that exceeds the threshold value shown in FIG. 8B notified from the synchronization signal detection unit 457, the bit detection unit 458 sends the bit “0” to the bit combination unit 459. input.

The bit combination unit 459 rearranges the bits input from the respective bit detection units 458 into a bit string in the order of digits and inputs the bits to the determination unit 460.
The determination unit 460 determines whether the bit string input from the bit combination unit 459 is superimposition data. When determining that the data is superimposition data, the determination unit 460 inputs the superimposition data to the specifying unit 46 and inputs the superimposition start timing input from the detection section detection unit 456 to the data replacement unit 47.

  In this way, when the extraction unit 45 inputs the superimposition data from the audio data to the specifying unit 46, the specifying unit 46 decodes the data of the predetermined frequency included in the frequency domain data, so that the first superimposition data indicates The length of one advertisement data is specified. Specifically, the specifying unit 46 decodes data having a predetermined frequency in a frequency region lower than the audible frequency region included in the frequency region data, thereby reducing the length of the first advertisement data indicated by the superimposed data. Identify.

[Operation Flow of Distribution Data Creation Device 4]
FIG. 9 is a flowchart showing the flow of processing of the distribution data creation device 4. This flowchart starts when the distribution data creation device 4 receives a reproduction request from the data reproduction terminal 3. In this flowchart, it is assumed that the program data for which the reproduction request has been received is stored in the storage unit 42.

  The program data acquisition unit 44 acquires program data from the storage unit 42 (S11), and inputs the acquired program data to the extraction unit 45. The extraction unit 45 determines whether superimposition data indicating that the first advertisement data can be replaced is superimposed (S12). Specifically, the extraction unit 45 generates frequency domain data by down-sampling the audio data of the first advertisement data and performing Fourier transform, and determines whether the generated frequency domain data includes superimposed data. . If the extraction unit 45 determines that the superimposed data is not superimposed, the process proceeds to S17. On the other hand, when the extraction unit 45 determines that the superimposed data is superimposed, the extracting unit 45 extracts the superimposed data from the frequency domain data (S13). Further, the extraction unit 45 extracts the superimposition start timing from the frequency domain data. The extraction unit 45 inputs the extracted superposition data to the specifying unit 46 and inputs the extracted superposition start timing to the data replacement unit 47.

  Based on the superimposition data input from the extraction unit 45, the specifying unit 46 specifies the length of time for the replaceable advertising space (hereinafter referred to as replaceable time) (S14). For example, when there is one superposition data indicating that the length is “30 seconds”, the specifying unit 46 specifies that the replaceable time is “30 seconds”. For example, when the specifying unit 46 specifies that two pieces of superimposed data indicating that the length is “30 seconds” are consecutive, “60 seconds” obtained by adding the two pieces of superimposed data is replaced. Identify possible time. The specifying unit 46 inputs the specified replacement available time to the data replacement unit 47.

  The data replacement unit 47 acquires the second advertisement data corresponding to the length of the replaceable time input from the specifying unit 46 from the advertisement server 2 (S15), and acquires the replaceable first advertisement data. 2 Replaced with advertisement data (S16). Specifically, first, the data replacement unit 47 determines the first advertisement data in which the identifying unit 46 identifies the first advertisement data in which the superimposed data is inserted before replacing the first advertisement data with the second advertisement data. Replace with silence data corresponding to the length of Thereafter, the data replacement unit 47 replaces the replaceable first advertisement data with the second advertisement data acquired from the advertisement server 2 in accordance with the superimposition start timing input from the extraction unit 45. Then, the data replacement unit 47 transmits the distribution data to the data reproduction terminal 3 (S17).

[Effect in this embodiment]
As described above, in the data creation system S according to the present embodiment, the broadcast data creation device 1 uses the audio watermark technique to superimpose the superimposed data on the program data including the first advertisement data 4 for the delivery data creation device 4. Send to. The distribution data creation device 4 acquires second advertisement data from the advertisement server 2 that is replaceable first advertisement data indicated by superimposition data extracted using Fourier transform, among advertisement data included in the received program data. Replace with. In this way, the data creation system S does not need to have information about the broadcast program schedule (the main program broadcast time, the time of entering the CM, the length of the CM, whether the CM can be replaced, etc.) in advance. , The advertisement can be replaced appropriately. As a result, for example, even in a network program in the simulcast format, advertisement replacement can be performed appropriately, and the degree of freedom for advertisement replacement and program organization can be increased. In addition, by replacing only the first advertisement data that can be replaced among the plurality of advertisement data with the second advertisement data, advertisements that are not permitted to be replaced are included in the broadcast advertisements included in the broadcast program. It is possible to prevent the replacement.

[Modification]
In the said embodiment, the case where the advertisement data on which superimposition data was superimposed is the 1st advertisement data which can be replaced was illustrated. On the other hand, the advertisement data creation device 5 adds, to each advertisement data, superposition data including at least one of the length of the advertisement data, a replacement flag indicating whether replacement is possible, and the content type of the advertisement data. You may superimpose.

  In this case, first, the extraction unit 45 of the distribution data creation device 4 extracts superimposed data including information on whether or not the advertisement data can be replaced. Specifically, the extraction unit 45 extracts the superimposed data superimposed on each advertisement data, and inputs the extracted superimposed data to the specifying unit 46.

  The data replacement unit 47 replaces the first advertisement data only when the superimposed data indicates that the advertisement data can be replaced. Specifically, the specifying unit 46 determines whether each advertisement data is replaceable first advertisement data based on a replacement flag included in the superimposition data input from the extraction unit 45.

  For example, when it is determined that one piece of non-continuous advertisement data can be replaced, the specifying unit 46 includes information indicating the replaceable first advertisement data and information indicating the length of the first advertisement data. 47. In addition, for example, when the specifying unit 46 determines that two consecutive advertisement data can be replaced, the information indicating two replaceable first advertisement data as information indicating the length of the replaceable advertisement space , And information indicating the total length of the two first advertisement data is input to the data replacement unit 47. The data replacement unit 47 replaces the first advertisement data with the second advertisement data acquired from the advertisement server 2 based on the information input from the specifying unit 46.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment, A various deformation | transformation and change are possible within the range of the summary. is there. For example, the data reproduction terminal 3 has acquired the program content to be reproduced from the distribution data creation device 4, but is not limited thereto. The data reproduction terminal 3 may realize the function of the distribution data creation device 4 by executing the application program. Specifically, the data reproduction terminal 3 reproduces the program data acquired from the broadcast data creation device 1 and displays the replaceable first advertisement data indicated by the superimposition data extracted by using Fourier transform as the advertisement server 2. Replace with the second advertisement data acquired from.

  Moreover, in the said embodiment, although the case where advertisement data was replaced was illustrated, it is not restricted to this. The distribution data creation device 4 may replace part of the main data. For example, when the main part is a music program, the broadcast data creation device 1 superimposes the superimposed data for each song. Then, the distribution data creation device 4 replaces the music to be reproduced according to the region where the data reproduction terminal 3 is located or the attributes of the user who owns the data reproduction terminal 3 such as sex and age.

  Further, for example, specific embodiments of device distribution / integration are not limited to the above-described embodiments, and all or a part thereof is configured to be functionally or physically distributed / integrated in arbitrary units. can do. In addition, new embodiments generated by any combination of a plurality of embodiments are also included in the embodiments of the present invention. The effect of the new embodiment produced by the combination has the effect of the original embodiment.

DESCRIPTION OF SYMBOLS 1 Broadcast data creation apparatus 11 Main part data acquisition part 12 Advertisement data acquisition part 13 Organization data acquisition part 14 Switching part 15 Transmission part 2 Advertising server 3 Data reproduction terminal 4 Distribution data creation apparatus 5 Advertisement data creation apparatus 6 Advertisement bank 41 Communication Unit 42 storage unit 43 control unit 44 program data acquisition unit 45 extraction unit 451 downsampling unit 452 filter processing unit 453 decimation unit 454 overlap processing unit 455 frequency domain conversion unit 456 detection section detection unit 457 synchronization signal detection unit 458 bit detection unit 459 bit combination unit 460 determination unit 46 identification unit 47 data replacement unit 50 advertisement data acquisition unit 51 filter processing unit 52 bit processing unit 53 sine wave generation unit 54 synchronization signal generation unit 55 detection section signal generation unit 56 data superimposition unit

Claims (24)

A program data acquisition unit for acquiring broadcast program data in which advertisement data is inserted between a plurality of main data;
An extractor for extracting superimposed data inserted superimposed on the audio data portion of the first advertisement data of at least a part of the advertisement data;
A specifying unit for specifying the length of the first advertisement data based on the superimposed data extracted by the extracting unit;
A data replacement unit that replaces the first advertisement data in which the superimposed data is inserted with another second advertisement data corresponding to the length of the first advertisement data identified by the identifying unit;
A data creation device for distribution. The specifying unit specifies the length of the replaceable advertisement space based on the length of the first advertisement data into which the superimposed data is inserted,
The data replacement unit replaces the first advertisement data in which the superimposition data is inserted with the second advertisement data corresponding to the length of the replaceable advertisement space specified by the specifying unit.
The delivery data creation device according to claim 1. The data replacing unit replaces the first advertisement data with the second advertisement data after a predetermined time for the specifying unit to specify the length of the replaceable advertisement space has passed. Create and distribute the created distribution data to the network;
The delivery data creation device according to claim 1 or 2. The extraction unit extracts, from the advertisement data, superimposition data inserted and superimposed on a sound data portion of the first advertisement data that can be replaced at least;
The delivery data creation device according to any one of claims 1 to 3. The data replacement unit does not replace the advertisement data in which the superimposed data is not inserted in the advertisement data with the second advertisement data.
The delivery data creation device according to any one of claims 1 to 4. The extraction unit extracts the superimposed data including information on whether the advertisement data can be replaced,
The data replacement unit replaces the first advertisement data only when the superimposed data indicates that the advertisement data can be replaced.
The delivery data creation device according to any one of claims 1 to 4. The program data acquisition unit acquires the program data in which a plurality of the advertisement data is inserted between the plurality of main data.
The data replacement unit replaces two or more consecutive first advertisement data that can be replaced with the second advertisement data out of the plurality of advertisement data by the length of the two or more first advertisement data. Replace the second ad data corresponding to the total,
The delivery data creation device according to any one of claims 1 to 6. The data replacement unit replaces which first advertisement data is replaced with which second advertisement data after a predetermined maximum time has elapsed after acquiring the first advertisement data inserted after the main data. To decide,
The delivery data creation device according to any one of claims 1 to 7. When the superimposed data indicating the type of the second advertisement data that can be used for replacing the first advertisement data is superimposed on the audio data portion of the first advertisement data, the data replacement unit Selecting one or more second advertisement data from the plurality of second advertisement data based on the type indicated by the data;
The delivery data creation device according to any one of claims 1 to 8. The data replacement unit replaces the first advertisement data with predetermined music data when there is no second advertisement data that can replace the first advertisement data.
The delivery data creation device according to any one of claims 1 to 9. The data replacement unit replaces the first advertisement data with silence data before replacing the first advertisement data with the second advertisement data.
The delivery data creation device according to any one of claims 1 to 10. The superimposed data is superimposed on the audio data portion of the first advertisement data;
The extraction unit generates frequency domain data by Fourier transforming the audio data,
The specifying unit specifies a length of the first advertisement data indicated by the superimposed data by decoding data of a predetermined frequency included in the frequency domain data.
The distribution data creation device according to any one of claims 1 to 11. The specifying unit specifies the length of the first advertisement data indicated by the superimposed data by decoding data of the predetermined frequency in a frequency region lower than an audible frequency region included in the frequency region data. To
The delivery data creation device according to claim 12. The extraction unit generates the frequency domain data by sampling and Fourier transforming the audio data at a second sampling frequency lower than the first sampling frequency used for encoding the audio data;
14. The distribution data creation device according to claim 12 or 13. The extraction unit specifies a timing at which the data of the predetermined frequency included in the frequency domain data is first detected as a start timing of the first advertisement data;
The delivery data creation device according to any one of claims 12 to 14. A program data acquisition unit for acquiring broadcast program data in which advertisement data is inserted between a plurality of main data;
An extractor for extracting superimposed data inserted superimposed on the audio data portion of the first advertisement data of at least a part of the advertisement data;
A specifying unit for specifying the length of the first advertisement data based on the superimposed data extracted by the extracting unit;
A data replacement unit that replaces the first advertisement data in which the superimposition data is inserted with silence data corresponding to the length of the first advertisement data specified by the specifying unit;
A data creation device for distribution. An ad data acquisition unit for acquiring ad data;
Data superimposition that superimposes the length of the advertisement data and superimposition data indicating whether the advertisement is replaceable on the audio data portion of the advertisement data and outputs the superimposed advertisement data after the superimposition data is superimposed And
An advertisement data creation device. The data superimposing unit superimposes the superimposing data indicating the type of advertising data that can be used for replacing the advertising data on the advertising data.
The advertisement data creation device according to claim 17 . The data superimposing unit superimposes the superimposition data of a predetermined frequency that decreases to 0 after the amplitude increases from 0 to the maximum value on the audio data portion of the advertisement data.
The advertisement data creation device according to claim 17 or 18 . The data superimposing unit superimposes a plurality of superposed data having different frequencies, which indicate the length of the advertisement data, on the audio data.
The advertisement data creation device according to claim 19 . The data superimposing unit superimposes the superimposition data of a frequency in a frequency region lower than the audible frequency region,
The advertisement data creation device according to any one of claims 17 to 20 . The computer runs,
Acquiring broadcast program data in which advertisement data is inserted between a plurality of main data;
Extracting superimposed data inserted superimposed on an audio data portion of the first advertisement data of at least a part of the advertisement data;
Identifying the length of the first advertisement data based on the superimposed data extracted in the extracting step;
Replacing the first advertisement data in which the superimposed data is inserted with another second advertisement data corresponding to the length of the first advertisement data identified in the identifying step;
A method for creating data for distribution. Computer
A program data acquisition unit for acquiring broadcast program data in which advertisement data is inserted between a plurality of main data,
An extractor for extracting superimposed data inserted in an overlapping manner with the audio data portion of the first advertisement data of at least a part of the advertisement data;
Based on the superimposition data extracted by the extraction unit, the specifying unit that specifies the length of the first advertisement data, and the first advertisement data in which the superimposition data is inserted are specified by the specifying unit. A data replacement unit for replacing with another second advertisement data corresponding to the length of one advertisement data;
Program to function as. A broadcast data creation device for creating broadcast program data, and a delivery data creation device for creating distribution program data to be delivered via a network based on the broadcast program data created by the broadcast data creation device; A data creation system comprising:
The broadcast data creation device includes:
A main data acquisition unit for acquiring a plurality of main data for broadcasting;
An advertisement data acquisition unit that acquires first advertisement data in which superimposition data indicating the length of the advertisement data is superimposed on an audio data portion of the advertisement data, as advertisement data to be inserted between the plurality of main data,
A transmission unit for transmitting broadcast program data in which the first advertisement data is inserted between the plurality of main data to the distribution data creation device;
Have
The delivery data creation device includes:
A program data acquisition unit for acquiring the program data for broadcasting in which advertisement data is inserted between a plurality of main data;
An extractor for extracting superimposed data inserted in an overlapping manner with the audio data portion of the first advertisement data of at least a part of the advertisement data;
A specifying unit for specifying the length of the first advertisement data based on the superimposed data extracted by the extracting unit;
A data replacement unit that replaces the first advertisement data in which the superimposed data is inserted with another second advertisement data corresponding to the length of the first advertisement data identified by the identifying unit;
A data creation system.

Images