JP2003066971A - Contents distribution system, contents distribution method used for the same, and distribution control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a contents distribution system for flexibly combining the cost paid by a user receiving supply of musical data and the frequency of commercial sound data for commercial. SOLUTION: A controlling data D, a music MP3 data E, a character data F, a CM sound MP3 data G, a character data H and a controlling data J are time-multiplexed by a multiplexer 28 and a multiplexed data K is generated. The multiplexed data K as a radio signal L is transmitted to a cellular phone 40 through a gateway 31, a communication line NW and a radio base station 32. The cellular phone 40 selects frequency information set so as to add the CM sound data to the music data in low frequency when a charge to the user is expensive. The cellular phone 40 selects the frequency information set so as to add the CM sound data to the music data in high frequency when the charge to the user is inexpensive. The frequency that the CM sound data is added to the music data, is changed based on a download fee.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a content distribution system, a content distribution method used in the system, and a distribution control program, and more particularly, when charging a user who receives a content distribution via a terminal. The present invention relates to a content distribution system suitable for use in, for example, a content distribution method used in the system, and a distribution control program.

[0002]

2. Description of the Related Art MP3 content such as music data
Compressed music data generated by compression based on the (MPEG1 Audio layer iii) standard (hereinafter referred to as "music MP3 data").
Is distributed from a server to a wireless mobile terminal such as a mobile phone, and the wireless mobile terminal can decrypt and reproduce the data. Since the reproduced sound obtained by decoding the music MP3 data has a high-quality sound quality, the content distribution system that distributes the music data to the user is required to pay the cost when the music MP3 data is downloaded to the wireless mobile terminal. It is important to establish.

This type of content distribution system is conventionally a server 1 and a gateway station 2 as shown in FIG. 7, for example.
And a wireless base station 3 and a mobile phone 10,
The gateway station 2 and the wireless base station 3 are connected via a communication line NW. The server 1 compresses music data based on the MP3 standard, music MP3 data A, and commercial voice data based on the MP3 standard, C.
It holds M audio MP3 data B in advance. Gate station 2
Connects the server 1 to the communication line NW. Radio base station 3
Wirelessly connects the mobile phone 10 to the communication line NW. The mobile phone 10 uses the music MP3 stored in the server 1.
The data A and the CM audio MP3 data B are received as a radio signal C via the gateway station 2, the communication line NW, and the radio base station 3, and delivered to the user.

FIG. 8 is a block diagram showing a structure of a main part of the mobile phone 10 in FIG. This mobile phone 10
As shown in FIG. 8, the antenna 11, the wireless unit 12, the baseband processing unit 13, and the CPU (central processing unit) 14
, ROM (Read Only Memory) 15, and RAM (Random A)
ccess Memory) 16 and FM (Frequency Modulation)
The sound source unit 17 and the speaker 18 are included. The wireless unit 12 transmits and receives the wireless signal C via the antenna 11. The baseband processing unit 13 converts the radio signal C into a signal for baseband transmission. The CPU 14 controls the operation of the mobile phone 10 based on a control program written in the ROM 15 in advance. The RAM 16 temporarily holds the content of the wireless signal C as needed. The FM sound source unit 17 is, for example, a sound source LSI (Large Scale Integrat).
ed circuit) and the like, when a wireless signal C is received, an incoming melody signal is generated and sent to the speaker 18, and music MP3 data A and CM voice are generated from the contents of the wireless signal C held in the RAM 16. The MP3 data B is downloaded, decrypted, and sent to the speaker 18.

In this content distribution system, the mobile phone 1 issues a music data distribution request based on a user operation.
From 0 to the server 1 via the wireless base station 3, the communication line NW, and the gateway station 2. Then, the music MP3 data A and the CM voice MP3 data B held in the server 1 are received by the mobile phone 10 as a wireless signal C via the gateway station 2, the communication line NW, and the wireless base station 3. In the mobile phone 10, when the wireless signal C is received, the contents of the wireless signal C are held in the RAM 16 and the FM signal is received.
An incoming melody signal is sent from the sound source unit 17 to the speaker 18, and an incoming melody is generated from the speaker 18. After this, based on the user's operation, the music MP3 data A and CM from the contents of the wireless signal C held in the RAM 16
The audio MP3 data B is downloaded and decoded by the FM sound source unit 17, and the music data and the CM audio data are sent to the speaker 18. Then, the CM voice data is added to the music data and delivered to the user.

[0006]

However, the above-described conventional content distribution system has the following problems. That is, the correspondence relationship between the frequency of adding the CM voice data to the music data and the charge for downloading the music MP3 data A is not established. Therefore, there has been a problem that the frequency of adding the CM voice data to the music data cannot be flexibly changed based on the download charge. In addition, the ringtone melody is generated by the FM sound source unit 17
Since it is generated by, the content is fixed and there is a problem that it cannot be easily changed according to the user's request.

The present invention has been made in view of the above circumstances, and the frequency with which CM voice data is added to music data can be flexibly changed based on the charge for downloading, and the ringing melody can be changed according to the user's request. It is an object of the present invention to provide a content distribution system that can be easily changed by a user, a content distribution method used in the system, and a distribution control program.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 holds in advance a plurality of contents to be distributed to a user, and the user among the contents is the user. A content distribution system that distributes content based on the selection to the user, and controls viewing data to be viewed by the user, commercial data to be a commercial for the user, and the viewing data and the commercial data. Server for holding in advance each of the contents including at least control data for time-division multiplexing, and outputting the multiplexed data by time-division-multiplexing the contents, and downloading the multiplexed data for the control from the multiplexed data. Data is separated, and then the viewing data is separated from the multiplexed data based on the control data. Separating data and commercial data, is characterized by comprising a user terminal to be delivered to a user said adding commercial data to said viewing data at a frequency based on said control data.

The invention according to claim 2 relates to the content distribution system according to claim 1, wherein the control data includes frequency information indicating a frequency of adding the commercial data to the viewing data, and the frequency information. Is changed according to the amount of money charged to the user receiving the distribution of the viewing data.

The invention according to claim 3 relates to the content distribution system according to claim 2, wherein the user terminal inputs the multiplexed data, separates the control data from the multiplexed data, and thereafter, Separating the appreciation data and the commercial data from the multiplexed data based on the control data, a random number generator, comparing a random number generated from the random number generator with the frequency information, When the random number is equal to or less than the frequency information, the separated commercial data is added to the separated viewing data, and when the random number is larger than the frequency information, the separated viewing data is separated into the separated viewing data. It is characterized in that it comprises an adding means that does not add commercial data.

According to a fourth aspect of the present invention, a content distribution system that holds a plurality of contents to be distributed to a user in advance and distributes a content based on the user's selection among the respective contents to the user. According to the present invention, compressed music data obtained by compressing music data to be listened to by a user, compressed audio data obtained by compressing commercial audio data for the user, and control for controlling the compressed music data and the compressed audio data. Server that holds in advance each content including at least data for use in time division, multiplexes each content and outputs the multiplexed data, and downloads the multiplexed data to separate the control data from the multiplexed data And after this,
The compressed music data and the compressed audio data are separated from the multiplexed data based on the control data, the music data and the audio data are decoded from the compressed music data and the compressed audio data, and at the same time, the control data is obtained. It is characterized by comprising a user terminal that adds the decrypted audio data to the decrypted music data at a frequency based on the frequency and delivers the result to the user.

A fifth aspect of the present invention relates to the content distribution system according to the fourth aspect, wherein the control data represents a frequency of adding the decrypted audio data to the decrypted music data. It is characterized in that the frequency information including information changes in accordance with the amount of money charged to the user who receives the distribution of the decrypted music data.

The invention according to claim 6 relates to the content distribution system according to claim 5, wherein the user terminal inputs the multiplexed data and separates the control data from the multiplexed data. Separating means for separating the compressed music data and compressed audio data from the multiplexed data based on the control data, and decoding means for decoding the music data and audio data from the compressed music data and compressed audio data And comparing the random number generated by the random number generating means with the frequency information, and when the random number is equal to or less than the frequency information, the decoded voice data is converted into the decoded music data. And adding means for adding the decoded voice data to the decoded music data when the random number is larger than the frequency information. It is characterized in Rukoto.

The invention according to claim 7 relates to the content distribution system according to claim 4, 5 or 6, wherein the compressed music data and compressed audio data are MP3 (MPEG1 Audio la).
It is characterized by being generated based on the standard of yeriii).

The invention according to claim 8 relates to a content distribution method, wherein a plurality of contents to be distributed to a user are held in advance, and the content based on the selection by the user among the respective contents is stored in the user. In the content distribution system for distributing to the user, at least the viewing data to be viewed by the user, commercial data to be a commercial for the user, and control data for controlling the viewing data and the commercial data. Each content is held in advance, a multiplexed data output process of time-divisionally multiplexing each content and outputting multiplexed data, and downloading the multiplexed data to separate the control data from the multiplexed data, After this, based on the control data, the multiplexed data is used for viewing. A separation process of separating the over data and commercial data, and characterized by performing a distribution process for distributing the user by adding the commercial data to said viewing data at a frequency based on said control data.

The invention according to claim 9 relates to the content distribution method according to claim 8, wherein the control data includes frequency information indicating a frequency of adding the commercial data to the viewing data, and the frequency information. Is changed according to the amount of money charged to the user receiving the distribution of the viewing data.

The invention according to claim 10 relates to the content distribution method according to claim 9, wherein in the distribution processing, a random number is compared with the frequency information, and when the random number is equal to or less than the frequency information, the content for viewing The commercial data is added to the data, and when the random number is larger than the frequency information, the commercial data is not added to the viewing data.

The invention according to claim 11 relates to a content distribution method, wherein a plurality of contents to be distributed to a user are held in advance, and a content based on the user's selection among the respective contents is stored in the user. In the content distribution system for distributing to the user, compressed music data obtained by compressing music data to be listened to by the user, compressed audio data obtained by compressing audio data for commercial to the user, and the compressed music data and the compressed audio data. Multiplexed data generation processing that holds in advance each content including at least control data for controlling, multiplexes each content and outputs multiplexed data, and downloads the multiplexed data The control data is separated from the encrypted data, and then, based on the control data, Based on the control data, a separation process for separating the compressed music data and the compressed voice data from the multiplexed data, a decoding process for decoding the music data and the voice data from the compressed music data and the compressed voice data, It is characterized by performing a distribution process of adding the decrypted audio data to the decrypted music data at a predetermined frequency and delivering to the user.

The invention according to claim 12 relates to the content distribution method according to claim 11, wherein the control data represents the frequency of adding the decrypted audio data to the decrypted music data. It is characterized in that the frequency information including information changes in accordance with the amount of money charged to the user who receives the distribution of the decrypted music data.

The invention according to claim 13 relates to the content distribution method according to claim 12, wherein in the distribution processing, a random number is compared with the frequency information, and when the random number is equal to or less than the frequency information, the decryption is performed. The decoded audio data is added to the decoded music data, and the decoded audio data is not added to the decoded music data when the random number is larger than the frequency information. .

The invention according to claim 14 is the invention according to claims 11 and 1.
According to the content delivery method described in 2 or 13, the compressed music data and compressed audio data are MP3 (MPEG1 Audit).
It is characterized by being generated based on the standard of o layer iii).

The invention according to claim 15 relates to a distribution control program, and the computer according to claim 8, 9, 10, 1
The content delivery method described in 1, 12, 13 or 14 is implemented.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing a content distribution system according to an embodiment of the present invention. As shown in the figure, the content distribution system of this form includes a server 20, a gateway station 31, and a wireless base station 32.
And the mobile phone 40, and the same gateway station 31 and the same wireless base station 32 are connected via a communication line NW. The server 20 includes a memory 21, a memory 22, a selector 23, a memory 24, a selector 25, and a memory 2.
6, a selector 27, and a multiplexer 28.

The memory 21 is an MPEG2 (Moving Pictu).
re Experts Group 2) standard recommendation: PAT (Program Association Table) and PMT (Program Map Table) defined by ISO / IEC (International Organization for Standardization / International Electrotechnical Commission) 13818-1 are packetized for control data. It is held in advance as D (content).
The PAT is, for each program number, the PID (Pa
cket ID Identification, packet identification information), and the PID of the PAT itself is a fixed P
ID = “0” is assigned. The PMT indicates, for each program number, the PID of a packet in which a stream of video, audio, additional data, etc. which compose the program is transmitted. The PID of the PMT itself is
Specified by PAT. The memory 22 is a plurality of types of music MP3 data (that is, compressed music data) obtained by compressing and packetizing music data to be viewed by the user.
Is held in advance as content. Selector 23
Is a plurality of types of music MP3 stored in the memory 22.
One of the data, music MP3 data E, is selected and output based on an instruction from the user of the mobile phone 40.

The memory 24 compresses a plurality of types of packetized character data (for example, the content of a commercial, etc.) and a plurality of types of commercial voice data for a commercial to the user into a packetized CM voice MP3. Data (that is, compressed audio data) is held in advance as content. The maximum number of characters of these character data is determined in advance, and when the maximum number of characters is not reached, a null character is added and the amount of data is adjusted to be always constant. The selector 25 is the memory 2
One of the plurality of types of character data stored in the memory 4 is selected and output based on an instruction from the operator of the server 20, and the plurality of types of CM audio MP3 data stored in the memory 24 are selected. One of the CM voices M
The P3 data G is selected and output based on an instruction from the operator of the server 20.

The memory 26 holds in advance a plurality of types of packetized character data (for example, representing the frequency with which CM voice data is added to music data), and packetizes a plurality of types of CM voice MP3 frequency tables. It is held in advance as control data (content). These CM audio MP3 frequency tables have different contents depending on the amount of money charged to the user. Also, the maximum number of characters of these character data is predetermined, and when the maximum number of characters is not reached, a null character is added and the amount of data is adjusted to be always constant. Selector 27
Selects and outputs one character data H out of a plurality of types of character data held in the memory 26 based on the amount of money charged to the user who receives the music data supply, and is also held in the memory 26. Multiple types of C
One CM audio MP3 in the M audio MP3 frequency table
The frequency table is selected based on the charge amount for the same user and output as the control data J.

In this case, for example, when the billing amount is high, the CM voice MP3 frequency table set so that the frequency of adding the CM voice data to the music data is low is selected, and when the billing amount is low, the addition is performed. The CM audio MP3 frequency table set so that the frequency of performing the operation is increased is selected. The value in the CM audio MP3 frequency table changes according to the situation, but since only the value changes, the data amount of the table does not change. Therefore, the data amount of the control data J is always constant.

The multiplexer 28 controls the control data D,
Music MP3 data E, character data F, CM voice MP3 data G, character data H, and control data J are time-division multiplexed to generate multiplexed data K. Each PID of the control data D, the music MP3 data E, the character data F, the CM voice MP3 data G, the character data H, and the control data J is fixed and operated, and the contents of the PMT are always the same. Operated by. Also, music MP3 data E,
Since the data rates of the character data F, the CM audio MP3 data G, the character data H, and the control data J are set to be constant, the timing of selecting each of these data is fixed, and the selector 23, The control mechanism (not shown) of 25 and 27 becomes simple.

The gateway station 31 connects the server 20 to the communication line NW.
Connect to. The wireless base station 32 wirelessly connects the mobile phone 40 to the communication line NW.

The mobile phone 40 downloads the multiplexed data K as a wireless signal L via the gateway station 31, the communication line NW, and the wireless base station 32, and the control data D and J from the multiplexed data K are downloaded. After that, the music MP3 data E and the CM voice MP3 data G are separated from the multiplexed data K based on the control data D. Furthermore, the mobile phone 40 uses the music MP3 data E and the CM voice MP.
3 Music data and commercial voice data are decoded from the data G, and the decrypted commercial voice data is added to the decoded music data at a frequency based on the control data J and distributed to the user. To do.

FIG. 2 is a block diagram showing a main part of the mobile phone 40 shown in FIG. As shown in FIG. 2, the mobile phone 40 includes a demultiplexer 41, a character display subsystem 42, a FIFO (First In First Out) 43, and an F
The IFO 44, the demultiplexer control unit 45, the selector 46, the MP3 decoder 47, the FIFO 48, the upsampler 49, the FIFO 50, and the selector 51.
, Adder 52, selector control unit 60, and CPU 71
And a ROM 72.

The demultiplexer 41 uses the multiplexed data K
Is input to separate the control data D and J from the same multiplexed data K, and thereafter, the character data F and H, the music MP3 data E and the CM voice from the same multiplexed data K based on the same control data D. Separate the MP3 data G. The character display subsystem 42 inputs and displays the character data F and H.
The FIFO 43 inputs the transmitted music MP3 data E, performs time axis conversion to smooth the transmission speed of the music MP3 data E, and outputs the music MP3 data Q. FIF
The O44 inputs the transmitted CM voice MP3 data G, performs time axis conversion to smooth the transmission speed of the CM voice MP3 data G, and outputs the CM voice MP3 data S. The demultiplexer control unit 45 determines each data contained in the packet of the multiplexed data K based on the control data D, and outputs the control signal P based on the determination result to control the demultiplexer 41. Further, the demultiplexer control unit 45 controls the CM voice M of the control data J.
The CM voice frequency information R is separated from the P3 frequency table and supplied to the selector control unit 60.

The selector 46 selects the music MP3 data Q or the CM audio MP3 data S based on the control signal U and outputs it. The MP3 decoder 47 decodes the music MP3 data Q or the CM audio MP3 data S output from the selector 46. The FIFO 48 performs time-axis conversion on the decrypted music MP3 data Q to obtain the music MP3 data Q.
3 Data Q is expanded to generate music data X and output. The upsampler 49 is a decoded CM audio MP.
Sampling frequency of 3 data S music MP3 data Q
The CM audio MP3 data W is generated and output by matching the sampling frequency of the. FIFO50,
The CM audio MP3 data W is time-axis converted, the CM audio MP3 data W is expanded, and the CM audio data Y is generated and output. The selector 51 selects the CM audio data Y when the control signal V is in the non-active mode,
The ground side is selected when the control signal V is in the active mode. When the selector 51 does not select the CM audio data Y, the adder 52 outputs the music data X as the output signal a, and when the selector 51 selects the CM audio data Y, the adder 52 outputs the same music data X to the same CM. The audio data Y is added and output as the output signal a. The output side of the adder 52 is connected to a reproducing means composed of a speaker (not shown) or the like.

The selector control section 60 receives the incoming melody setting information T indicating whether or not the music data E contained in the multiplexed data K is used as an incoming melody, and the incoming state of the multiplexed data K (that is, the incoming call is received). The following (1) from the CM voice frequency information R based on the incoming call information Z indicating whether or not)
The frequency information b, c, d in the case of (3) to (3) is selected, and the control signals U, V are generated and output corresponding to these frequency information b, c, d. The incoming call melody setting information T and the incoming call information Z are sent from the CPU 71 based on scanning by the user. (1) The frequency information b represents the frequency at which the CM voice data Y is added to the music data X when the music data E included in the multiplexed data K is used as an incoming melody. (2) The frequency information c represents the frequency of adding the CM voice data Y to the music data X when the music data E included in the multiplexed data K is used as an incoming melody and is reproduced as music. (3) The frequency information d represents the frequency of adding the CM voice data Y to the music data X when the music data E in the multiplexed data K is not used as an incoming melody and is reproduced as music.

The CPU 71 controls the entire mobile phone 40. A distribution control program for operating the CPU 71 is recorded in the ROM 72.

FIG. 3 is a block diagram of the selector control unit 60 in FIG. As shown in FIG. 3, the selector control unit 60 includes a determination unit 61, a selector 62, and a “0” determination unit 6
3, a random number generator 64, a comparator 65, an OR circuit 66, a timing generator 67, and an OR circuit 68. The determination unit 61 generates and outputs the control signal e based on the incoming call melody setting information T and the incoming call information Z. The selector 62 selects the frequency information b, c, d in the cases (1) to (3) included in the CM voice frequency information R based on the control signal e and outputs it as the frequency information f.

In this case, when the incoming call information Z indicates the incoming of the multiplexed data K, the selector 62 causes the CM voice frequency information R
The frequency information b of "at the time of incoming call" is selected. When the incoming information Z does not indicate the incoming of the multiplexed data K, and the incoming melody setting information T is set to the incoming melody (that is, the music data E in the multiplexed data K is used as the incoming melody), The selector 62 uses the CM voice frequency information R
The frequency information c of "When setting incoming melody" is selected.
Further, the incoming information Z does not indicate the incoming of the multiplexed data K, and the incoming melody setting information T is not set to the incoming melody (that is, the music data E in the multiplexed data K).
Selector 62
Is "when the incoming melody is not set" in the CM voice frequency information R.
The frequency information d is selected.

The "0" judging section 63 inputs the frequency information f and outputs a judgment signal h in the active mode when the frequency information f indicates "0". The random number generator 64 generates a random number g. The random number g is a number generated at a uniform frequency,
Each number of the random number g from “0” to “n” is 1 / (n +
Appears with probability 1). Random number g greater than frequency information f
Appears with a probability of (n−f) / (n + 1). The comparator 65 compares the random number g with the frequency information f. When the same random number g is equal to or less than the same frequency information f, it outputs the determination signal j in the non-active mode, and when the same random number g is larger than the same frequency information f. , And outputs the active mode determination signal j.
The OR circuit 66 outputs an active mode control signal V when the determination signal h or the determination signal j is in the active mode, and outputs a non-active mode control signal when both the determination signal h and the determination signal j are in the non-active mode. Output V. The timing generator 67 generates and outputs a timing signal k for controlling the timing of the control signal U when the CM audio data Y is added to the music data X. The cycle of the control signal U is 1 AAU (Audio Access Un
it)). The OR circuit 68 controls the control signal V
Is in the active mode (that is, when the CM voice data Y is not added to the music data X), the control signal U in the active mode is output, and when the control signal V is in the non-active mode (that is, the music data X is CM in the music data X). When adding the audio data Y), the control signal U synchronized with the timing signal k is output.

In the selector control unit 60, the incoming melody setting information T and the incoming call information Z are input to the determination unit 61,
The control signal e is output from the determination unit 61. The frequency information b, c, d included in the CM voice frequency information R is the selector 6
2 is selected based on the control signal e, and is output as frequency information f from the selector 62. The frequency information f is “0”
When the frequency information f is input to the determination unit 63 and indicates “0”, the “0” determination unit 63 outputs the active mode determination signal h. The frequency information f is input to the comparator 65 and compared with the random number g. When the random number g is less than or equal to the frequency information f, the comparator 65 outputs the non-active mode determination signal j, and the random number g is compared with the frequency information f. When it is larger than the above, the comparator 65 outputs the determination signal j in the active mode.

The judgment signal h and the judgment signal j are the OR circuit 6
6, and when at least one of the determination signal h and the determination signal j is in the active mode, the OR circuit 66 outputs the control signal V in the active mode. Judgment signal h
And the determination signal j are both in the non-active mode, O
The non-active mode control signal V is output from the R circuit 66. The control signal V is input to the OR circuit 68, and when the control signal V is in the active mode (that is, when the CM sound data Y is not added to the music data X), the same O
When the control signal U in the active mode is output from the R circuit 68 and the control signal V is in the non-active mode (that is, when the CM audio data Y is added to the music data X), the OR circuit 68 outputs the timing signal k. The synchronized control signal U is output. When the frequency information f becomes large,
The frequency with which the CM voice data Y is added to the music data X increases.

FIG. 4 is a diagram showing an example of the contents of the frequency information b, c, d, and FIGS. 5 and 6 are time charts for explaining the operation of the mobile phone 40 of FIG. The processing contents of the music data distribution method used in the content distribution system of this embodiment will be described with reference to these drawings.
The memory 21 holds PAT and PMT as control data D in advance. Each music MP is stored in the memory 22.
3 data are held in advance. In the memory 24, each character data and each CM voice MP3 data are held in advance. The sampling frequency of each CM voice MP3 data is set to, for example, ½ of the sampling frequency of each music MP3 data. The memory 26 holds each character data in advance, and each CM voice MP3 frequency table in advance as control data.

Each music MP3 held in the memory 22
The data is selected by the selector 23 based on an instruction from the user of the mobile phone 40 via a wireless signal, and the music MP
One of the three data is output as music MP3 data E. Each character data and each CM voice MP3 data stored in the memory 24 is selected by the selector 25 based on the instruction of the operator of the server 20, and one of the character data is output as the character data F. One of the CM audio MP3 data is output as the CM audio MP3 data G. Each character data and each CM voice MP3 frequency table held in the memory 26 are selected by the selector 27 based on the amount of money charged to the user who receives the music data, and one of the character data is the character data H. As well as each CM
One of the audio MP3 frequency tables is the control data J
Is output as.

Control data D, music MP3 data E, character data F, CM voice MP3 data G, character data H,
The control data J and the control data J are time-division multiplexed by the multiplexer 28 to generate the multiplexed data K (multiplexed data generation process). This time division multiplexing is performed by the MPEG2 transport stream method, for example. The multiplexed data K is transmitted to the mobile phone 40 as a radio signal L via the gateway station 31, the communication line NW, and the radio base station 32.

In the mobile phone 40, as shown in FIG.
The multiplexed data K received as the radio signal L is input to the demultiplexer 41, and the control data D and J are separated from the multiplexed data K. The control data D and J are sent to the demultiplexer control unit 45. The demultiplexer control unit 45 determines which packet of the multiplexed data K carries each information based on the control data D, and outputs the control signal P based on the determination result. Demultiplexer 41 based on control signal P
Is controlled. In this case, the PAT of the control data D is first separated from the multiplexed data K. This PAT is sent to the demultiplexer control unit 45, and the packet carrying the PMT is identified based on the PAT. Then, from the multiplexed data K, character data F, H, music MP
3 data E and CM audio MP3 data G are separated (separation processing). Further, in the demultiplexer control unit 45, the CM voice frequency information R is separated from the CM voice MP3 frequency table of the control data J. CM voice frequency information R
Is sent to the selector control unit 60.

The character data F and H are input to the character display subsystem 42 and displayed. The music MP3 data E packetized and transmitted is written in the FIFO 43, time-axis converted to smooth the transmission rate, and the same FIFO is transmitted.
The music MP3 data Q is read from O43. The CM audio MP3 data G packetized and transmitted is FI
The data is written in the FO44, the time axis is converted, the transmission speed is smoothed, and the CM audio MP3 data S is output from the FIFO44.
Is read. Music MP3 data Q or CM voice MP
The 3-data S is selected by the selector 46 based on the control signal U and output. In this case, for example, the frequency information b, c, d shown in FIG. 4 is selected based on the incoming melody setting information T and the incoming information Z, and the control signal U is output corresponding to the frequency information b, c, d. To be done.

In FIG. 4, when the CM audio data Y is not added to the music data X, as in the case where the download fee is 100 yen, the control signal U becomes the active mode, and the music MP3 read from the FIFO 43 is read. Only the data Q is selected by the selector 46 and sent to the MP3 decoder 47. The music MP3 data Q is decoded by the MP3 decoder 47 (decoding process), written in the FIFO 48 and expanded after the processing delay time Td in the decoding process, and the music data X is read from the FIFO 48. At this time, since the control signal V is also in the active mode, the selector 51 selects the ground side,
Only the music data X is output from the adder 52 as the output signal a and distributed to the user (distribution processing). Output signal a
The music data X output as is used as an incoming melody according to the frequency information b and c.

In addition, in FIG. 4, when the CM audio data Y is added to the music data X as in the case where the download charge is free, for example, as shown in FIG. 6, the control signal U synchronized with the timing signal k is used. Is output and FIFO4
Music MP3 data Q and FIFO44 read from
The CM audio MP3 data S read out from MP3 is alternately selected by the selector 46 based on the control signal U, and MP3
It is sent to the decoder 47. Music MP3 data Q is M
The data is decoded by the P3 decoder 47 (decoding process), written into the FIFO 48 and expanded after the processing delay time Td of the decoding process, and the music data X is read from the FIFO 48.

The CM audio MP3 data S is MP3.
Decoding is performed by the decoder 47 (decoding process), and after the processing delay time Td of the decoding process, it is converted to the same sampling frequency as the music MP3 data Q by the upsampler 49,
The CM audio MP3 data W is output from the up sampler 49. The CM audio MP3 data W is expanded by the FIFO 50, and the CM audio data Y is read from the FIFO 50. At this time, the control signal V enters the non-active mode at a frequency corresponding to the frequency information f, so that the CM audio data Y is selected by the selector 51 at a frequency corresponding to the frequency information f. Then, the adder 52 adds a CM to the music data X.
The voice data Y is added at a frequency corresponding to the frequency information f,
The output signal a is delivered from the adder 52 to the user (delivery processing). The music data X included in the output signal a is used for the incoming melody according to the frequency information b and c.

As described above, in this embodiment, the random number g is compared with the frequency information f by the comparator 65 to obtain the random number g.
Is less than or equal to the frequency information f, the non-active mode determination signal j is output, and when the random number g is greater than the frequency information f, the active mode determination signal j is output.
When the amount of money charged to the user is high, the frequency of adding the CM voice data to the music data is low, and when the amount of money charged is low, the frequency of addition is high. Therefore, the frequency with which the CM voice data Y is added to the music data X is flexibly changed based on the download charge (that is, the charge amount). Further, the user can use desired music data as an incoming melody (ring tone), and can select the frequency of appearance of CM voices by setting the amount of download charge. Further, since the data rates of the music MP3 data E, the character data F, the CM voice MP3 data G, the character data H, and the control data J are set to be constant, the timing at which each of these data is selected is fixed. The selectors 23, 25, 27
Control becomes easier.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like within the scope not departing from the gist of the present invention. Also included in the present invention. For example, in the embodiment, an example has been described in which the packet multiplexing is performed by the MPEG2 transport stream system, but the packet multiplexing may be performed by the MPEG2 program stream (PS) system. In this case, a pack header, a system header, and a program stream map are used as control data. In addition, the CM audio MP3 frequency table includes a user private descriptor (that is, standard recommendation: ISO / IEC1) in the program stream map.
The packet is multiplexed as a descriptor (not defined in 3818-1). Further, in the program stream system, packets of music MP3 data, CM audio MP3 data, and character data packets are PES (Packetized).
Elementary Stream_packet) packet, and each of these PES packets is multiplexed. In the embodiment, the content is music MP3 data or CM audio MP3.
Although described as data, if the mobile phone 40 is provided with a function of reproducing video data, the same operation and effect as those of the above-described embodiment can be obtained even if the content is used as video data for viewing or commercial video data. To be
In addition to the MP3 standard, compressed music data and compressed audio data may be, for example, AAC (Advanced Audio Coding),
ATRAC (Adaptive Transform Acoustic Coding),
TwinVQ (Transform-domain Weighted Interleave)
It may be generated based on a standard such as Vector Quantization).

[0051]

As described above, according to the configuration of the present invention, the frequency of adding the commercial data to the viewing data is controlled based on the result of the comparison between the random number and the frequency information, and the amount charged to the user. Is high, the frequency of adding commercial data to the viewing data is low, and when the billing amount is low, the frequency of addition is high. Therefore, the frequency with which the commercial data is added to the viewing data can be flexibly changed based on the download fee. Further, the user can select the appearance frequency of the commercial data by setting the charge amount.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a content distribution system according to an embodiment of the present invention.

2 is a configuration diagram showing a main part of a mobile phone 40 in FIG.

FIG. 3 is a configuration diagram of a selector control unit 60 in FIG.

FIG. 4 is a diagram showing the contents of frequency information b, c, d.

5 is a time chart for explaining the operation of the mobile phone 40 of FIG.

FIG. 6 is a time chart for explaining the operation of the mobile phone 40 of FIG.

FIG. 7 is a block diagram showing a conventional content distribution system.

8 is a block diagram showing a configuration of a main part of the mobile phone 10 in FIG.

[Explanation of symbols]

20 servers 40 Mobile phone (user terminal) 41 Demultiplexer (separation means) 47 MP3 decoder (decoding means) 52 adder (adding means) 60 Selector control unit (addition means) 72 ROM

Claims (15)

[Claims] 1. A content distribution system that holds a plurality of contents to be distributed to a user in advance, and distributes to the user a content based on the selection of the user among the respective contents. Each content including at least the viewing data to be viewed, commercial data for a commercial to the user, and at least the control data for controlling the viewing data and the commercial data. A server for time-division-multiplexing and outputting multiplexed data; downloading the multiplexed data to separate the control data from the multiplexed data; and thereafter, the multiplexed data based on the control data. From the viewing data and commercial data, and based on the control data Content distribution system characterized by comprising a user terminal to be delivered to the user by adding the commercial data to said viewing data in frequency. 2. The control data includes frequency information indicating a frequency of adding the commercial data to the viewing data, and the frequency information is an amount charged to the user receiving the distribution of the viewing data. A corresponding change is made.
Content distribution system described. 3. The user terminal inputs the multiplexed data, separates the control data from the multiplexed data, and thereafter, based on the control data, extracts the viewing data from the multiplexed data. And separating means for separating commercial data, random number generating means, comparing the random number generated from the random number generating means with the frequency information, and when the random number is equal to or less than the frequency information, the separated viewing data is obtained. And adding means for adding the separated commercial data and not adding the separated commercial data to the separated viewing data when the random number is larger than the frequency information. The content distribution system according to claim 2. 4. A content distribution system which holds in advance a plurality of contents to be distributed to a user and distributes to the user a content based on the selection of the user among the respective contents. It includes at least compressed music data in which music data to be viewed is compressed, compressed audio data in which commercial audio data for the user is compressed, and control data for controlling the compressed music data and the compressed audio data. A server that holds the contents in advance, outputs the multiplexed data by time-division multiplexing the contents, and downloads the multiplexed data to separate the control data from the multiplexed data. Separates the compressed music data and compressed audio data from the multiplexed data based on the control data Decoding the music data and audio data from the compressed music data and compressed audio data, and adding the decoded audio data to the decoded music data at a frequency based on the control data. A content distribution system comprising a user terminal for distributing to a user. 5. The control data includes frequency information indicating a frequency of adding the decoded audio data to the decoded music data, and the frequency information includes the frequency information of the decoded music data. The content distribution system according to claim 4, wherein the content distribution system changes in accordance with an amount charged to the user who receives the distribution. 6. The user terminal inputs the multiplexed data, separates the control data from the multiplexed data, and thereafter, based on the control data, extracts the compressed music data from the multiplexed data. And a separation means for separating compressed audio data, a decoding means for decoding the music data and the audio data from the compressed music data and the compressed audio data, a random number generating means, a random number generated by the random number generating means and the When the random number is less than or equal to the frequency information, the decoded audio data is added to the decoded music data, and when the random number is larger than the frequency information, the decoding is performed. The content distribution system according to claim 5, further comprising: an addition unit that does not add the decrypted audio data to the reproduced music data. 7. The content distribution system according to claim 4, wherein the compressed music data and the compressed audio data are generated based on the MP3 (MPEG1 Audio layer iii) standard. 8. A content distribution system that holds a plurality of contents to be distributed to a user in advance and distributes content based on the user's selection among the respective contents to the user, wherein the user views the content. Each of the contents including at least the viewing data to be the target, the commercial data to be a commercial for the user, and the control data for controlling the viewing data and the commercial data, and holding each content in advance. A multiplexed data output process of dividing and multiplexing and outputting multiplexed data; and downloading the multiplexed data to separate the control data from the multiplexed data, and thereafter performing the multiplexing based on the control data. Processing for separating the viewing data and commercial data from the encoded data , The content distribution method and performing a distribution process for distributing the user by adding the commercial data to said viewing data at a frequency based on said control data. 9. The control data includes frequency information indicating a frequency of adding the commercial data to the viewing data, and the frequency information is an amount charged to the user receiving the distribution of the viewing data. 9. A corresponding change.
Content delivery method described. 10. In the distribution process, a random number is compared with the frequency information, and when the random number is equal to or less than the frequency information, the commercial data is added to the viewing data, and the random number is higher than the frequency information. 10. The content distribution method according to claim 9, wherein the commercial data is not added to the viewing data when it is large. 11. A content distribution system that holds a plurality of contents to be distributed to a user in advance and distributes to the user a content based on the selection of the user among the respective contents. Each of the above includes at least compressed music data obtained by compressing target music data, compressed voice data obtained by compressing commercial voice data for a user, and control data for controlling the compressed music data and the compressed voice data. A multiplexed data generation process of holding contents in advance and outputting the multiplexed data by time-division multiplexing each content, and downloading the multiplexed data to separate the control data from the multiplexed data, Then, the compressed music data and the compressed data are compressed from the multiplexed data based on the control data. Separation processing for separating voice data, decoding processing for decoding the music data and audio data from the compressed music data and compressed audio data, and the decoded music data at a frequency based on the control data. A content distribution method comprising: performing a distribution process of adding the decrypted audio data and distributing it to a user. 12. The control data includes frequency information indicating a frequency of adding the decoded audio data to the decoded music data, and the frequency information includes the frequency information of the decoded music data. The content delivery method according to claim 11, wherein the content delivery method changes in accordance with the amount of money charged to the user who receives the delivery. 13. In the distribution process, a random number is compared with the frequency information, and when the random number is equal to or less than the frequency information, the decrypted audio data is added to the decrypted music data. 13. The content distribution method according to claim 12, wherein when the random number is larger than the frequency information, the decrypted audio data is not added to the decrypted music data. 14. The compressed music data and the compressed audio data are generated based on the MP3 (MPEG1 Audio layer iii) standard.
The content delivery method described in 3. 15. The computer according to claim 8, 9, 10,
A distribution control program for executing the content distribution method described in 11, 12, 13 or 14.