JP4259675B2 - Mobile phone for music distribution system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mobile phone used in a music distribution system that realizes copyright protection for copied music.
[0002]
[Prior art]
Currently, CDs (compact discs) on which music information is recorded are on the market, and music information can be freely copied from a CD to a magneto-optical disc (MD).
[0003]
On the other hand, when music information is copied from the CD to the MD, it is impossible to copy the music information from the MD to another MD because it infringes the copyright.
[0004]
That is, at present, copying from a parent to a child can be performed freely, but copying from a grandchild cannot be performed.
[0005]
[Problems to be solved by the invention]
However, in the current system, it is difficult to freely supply music information, and this is an unfair system for manufacturers who manufacture equipment that records and reproduces music information.
[0006]
On the other hand, when music information can be freely copied, there is a problem of copyright infringement.
[0007]
Therefore, the present applicant aims to solve such problems, protect the copyright of copied music, and establish a fair system for distributors, artists, music listeners, and device manufacturers. A patent application has been filed for the music distribution system (1999 patent application No. 128904, etc.).
[0008]
However, in the music distribution system disclosed in Japanese Patent Application No. 128904 etc., only desired music data is read out from a plurality of media on which a plurality of received music data is recorded, and the read out music data is separated. The so-called editing function recorded on the medium is not disclosed.
[0009]
Accordingly, the present invention provides a mobile phone for use in a music distribution system having an editing function for selecting desired music data from a plurality of music data recorded on a plurality of media and recording them on the medium while protecting the copyright. The purpose is to do.
[0010]
[Means for Solving the Problems and Effects of the Invention]
According to the first aspect of the present invention, there is provided an encryption obtained by encrypting encrypted music data designated based on a call from a cellular phone, copyright information related to the encrypted music data, and a content key for decrypting the encrypted music data. A mobile phone for use in a music distribution system that distributes music data by transmitting an encrypted content key to a mobile phone that has made a call,
A unique ID that depends on the phone number of the mobile phone,
N media capable of recording copyright information, encrypted music data encrypted with a content key, and a plurality of music data each of which is an encrypted content key encrypted based on a unique ID;
A unique ID generation unit for generating a unique ID;
an input unit for extracting at least one medium from the n media and selecting desired music data from among the music data recorded on the extracted medium;
The unique ID generated by the unique ID generation unit and the received encrypted music data, copyright information, and encrypted content key are recorded on the medium,
Based on the input from the input unit, the desired music data recorded on the extracted medium is read, and the read desired music data is recorded on another medium different from the extracted medium, and the extracted medium A data editing unit for erasing the encrypted content key constituting the music data read from the other medium and deleted from the extracted medium;
It is a mobile phone used in a music distribution system including a data reproduction unit that reproduces music data recorded on a medium.
[0011]
In the mobile phone used for the music distribution system according to claim 1, desired encrypted music is recorded by recording the unique ID and the received encrypted music data, copyright information, and encrypted content key on a medium. Receive data distribution. Then, in particular, only desired encrypted music data is selected from a plurality of distributed media on which a plurality of encrypted music data is recorded, and recorded on another medium. In this case, the copyright information related to the desired encrypted music data and the encrypted content key are also copied to another medium together with the encrypted music data, and only the encrypted content key is recorded. Deleted from the original media. By repeating this operation, desired encrypted music data among a plurality of encrypted music data recorded on a plurality of media is moved to another medium while deleting the encrypted content key from the original medium.
[0012]
Therefore, according to the first aspect of the present invention, the owner of the mobile phone that has received the music data edits the desired encrypted music data to another medium while erasing the encrypted content key from the original medium. Therefore, when playing back the encrypted music data remaining on the original medium, it is necessary to receive the encrypted content key again, so that the encrypted music data can be edited while protecting the copyright. Is possible.
[0013]
According to a second aspect of the present invention, in the mobile phone used in the music distribution system according to the first aspect, the data editing unit is configured to store the desired recording recorded in the extracted medium based on the input from the input unit. A data reading unit for reading music data;
The unique ID generated by the unique ID generation unit and the received encrypted music data, copyright information, and encrypted content key are recorded on the medium,
A data recording unit for recording desired music data read by the data reading unit on another medium different from the extracted medium;
It is a mobile phone used in a music distribution system including a data erasure unit for erasing an encrypted content key constituting music data read from an extracted medium and recorded on another medium, from the extracted medium.
[0014]
In the mobile phone used for the music distribution system according to claim 2, the desired music data is read from the medium extracted based on the input from the input unit, and the encrypted content key constituting the music data is read out. Erased. The read music data is recorded on another medium different from the extracted medium.
[0015]
Therefore, according to the second aspect of the invention, since the extracted medium and the other medium are attached to the mobile phone, the mobile phone is desired without inserting or removing the medium. Edit music data.
[0016]
According to a third aspect of the present invention, in the mobile phone used in the music distribution system according to the first aspect, the data editing unit is configured to receive the desired recording recorded on the extracted medium based on the input from the input unit. A data reading unit for reading music data;
A storage unit for storing desired music data read by the data reading unit, a unique ID generated by the unique ID generation unit, and the received encrypted music data, copyright information, and encrypted content key As well as recording
A data recording unit for recording desired music data stored in the storage unit on another medium different from the extracted medium;
It is a mobile phone used in a music distribution system including a data erasure unit for erasing an encrypted content key constituting music data read from an extracted medium and recorded on another medium, from the extracted medium.
[0017]
In the mobile phone used for the music distribution system according to claim 3, a medium on which music data to be edited is recorded is mounted on the mobile phone, the music data to be edited is read, and the read music data is stored in the storage unit And the encrypted content key constituting the read music data is erased. Then, after the reading of the music data to be edited is completed, another medium is mounted on the mobile phone, and the music data stored in the storage unit is recorded on the other medium.
[0018]
Therefore, according to the third aspect of the present invention, music data can be quickly edited even with a mobile phone in which only one medium can be loaded.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. The concept of the music distribution system will be described with reference to FIG. The music distribution system 100 includes a mobile phone 1 and a music information server 10, and the mobile phone 1 calls the music information server 10 and designates desired music data. Assuming that music data of three songs is designated, encrypted music data, encrypted content key, and copyright information constituting each music data are transmitted from the music information server 10 to the mobile phone 1. That is, the music information server 10 receives encrypted music data (1) 205, an encrypted content key (1) 202 for decrypting the encrypted music data (1) 205, and a work related to the encrypted music data (1) 205. Copyright information related to right information (1) 206, encrypted music data (2) 207, encrypted content key (2) 203 for decrypting encrypted music data (2) 207, and encrypted music data (2) 207 (2) 208, Encrypted music data (3) 209, Encrypted music data (3) 204, an encrypted content key (3) 204, and copyright information (3) 209 related to the encrypted music data (3) 209 3) 210 is transmitted to the mobile phone 1.
[0020]
The mobile phone 1 that has received these data records the received data and the unique ID 201 generated by the mobile phone 1 in the memory card 20. The recorded encrypted music data (1) 205, (2) 207, and (3) 209 are decrypted with the encrypted content keys (1) 202, (2) 203, and (3) 204, respectively, and reproduced. The music can be heard through the headphones 15.
[0021]
With reference to FIG. 2, the operation of the mobile phone 1 and the music information server 10 will be described in detail. The mobile phone 1 includes a unique ID generation unit 80, a controller 81, a memory controller 82, a bus 83, a data editing unit 84, a data reproduction unit 85, a reception unit 86, an input unit 830, and a memory card 20. With.
[0022]
The unique ID generation unit 80 generates a unique ID 201 based on the phone number of the mobile phone 1. For example, when the telephone number of the mobile phone 1 is “090000000001”, the unique ID 201 is generated as “90999999999”.
[0023]
Further, the controller 81 controls each part of the mobile phone 1.
[0024]
Further, the memory controller 82 records the unique ID 201, the encrypted content key (1) 202, the encrypted music data (1) 205, the copyright information (1) 206, and the like on the memory card 20 based on the control of the controller 81. The data editing unit 84 and the data reproduction unit 85 are controlled for reading and / or reproduction.
[0025]
The bus 83 is a path through which each unit inputs and outputs a unique ID 201, an encrypted content key (1) 202, encrypted music data (1) 205, copyright information (1) 206, and the like.
[0026]
In addition, the data editing unit 84 includes a data recording unit 840, the unique ID 201 generated by the unique ID generation circuit 80 via the data recording unit 840, and the encrypted content key (1) 202 received from the music information server, Encrypted music data (1) 205, copyright information (1) 206, and the like are recorded on the memory card 20, and an encrypted content key, encrypted music data, and copyright information are set as one unit as will be described later. Edit music data.
[0027]
Further, the data reproducing unit 85 decrypts the encrypted music data (1) 205 recorded on the memory card 20 with the encrypted content key (1) 202 and reproduces it.
[0028]
The receiving unit 86 receives data such as the encrypted content key (1) 202, the encrypted music data (1) 205, and the copyright information (1) from the music information server 10.
[0029]
The input unit 830 performs various inputs.
[0030]
Next, the music information server 10 includes a reception unit 87, a unique ID recognition circuit 88, an encrypted content key generation circuit 89, a data unit 90, and a transmission unit 91.
[0031]
The receiving unit 87 receives a call from the mobile phone 1, outputs the mobile phone number to the unique ID recognition circuit 88, and outputs information related to the designated music data to the data unit 90.
[0032]
The unique ID recognition circuit 88 recognizes the unique ID 201 of the mobile phone 1 from the phone number of the mobile phone 1 received by the receiving unit 87.
[0033]
The encrypted content key generation circuit 89 encrypts the content key for decrypting the encrypted music data designated by the call from the mobile phone based on the unique ID 201 recognized by the unique ID recognition circuit 88. A key is generated, and the generated encrypted content key is output to the transmission unit 91.
[0034]
The data section 90 stores encrypted music data, copyright information relating to the encrypted music data, and a content key for decrypting the encrypted music data as a set. The “content key 1, encrypted music data 1, A plurality of encrypted music data such as “Copyright Information 1”, “Content Key 2, Encrypted Music Data 2, Copyright Information 2”,... Decrypt Copyright Information and Encrypted Music Data Is stored together with the content key. Then, information related to the designated music data is input from the receiving unit 87, a content key for decrypting the designated encrypted music data is output to the encrypted content key generation circuit 89, and the encrypted music data and copyright information are output. Are output to the transmitter 91. For example, when the encrypted music data 1 is designated, the content key 1 is output to the encrypted content key generation circuit 89, and the encrypted music data 1 and the copyright information 1 are output to the transmission unit 91.
[0035]
The transmission unit 91 transmits the encrypted music data, the encrypted content key, and the copyright information to the mobile phone 1.
[0036]
In order to purchase encrypted music data from the music information server 10, the telephone number of the music information server 10 is input from the input unit 830, and the music information server 10 is called. Then, when a call is made with the music information server 10, a list of encrypted music data held by the music information server 10 is displayed on a display unit (not shown) of the mobile phone 1, and the owner of the mobile phone 1 can select from the list. The number of the desired encrypted music data is input through the input unit 830.
[0037]
The receiver 87 of the music information server 10 receives the telephone number of the mobile phone 1 and the encrypted data number designating the desired music data by a call from the mobile phone 1, and assigns the telephone number of the mobile phone 1 to the unique ID. The data is output to the recognition circuit 88 and the number of the encrypted music data specifying the music data is output to the data unit 90.
[0038]
The unique ID recognition circuit 88 recognizes the unique ID 201 of the mobile phone 1 from the input telephone number of the mobile phone 1 and outputs the recognized unique ID 201 to the encrypted content key generation circuit 89.
[0039]
When the data unit 90 receives the number of the encrypted music data specifying the music data from the receiving unit 87, the data unit 90 outputs the encrypted music data corresponding to the number and the copyright information related to the encrypted music data to the transmission unit 91. Then, the content key for decrypting the encrypted music data is output to the encrypted content key generation circuit 89.
[0040]
The encrypted content key generation circuit 89 encrypts the content key input from the data unit 90 based on the unique ID 201 input from the unique ID recognition circuit 88 and outputs the encrypted encrypted content key to the transmission unit 91.
[0041]
The transmission unit 91 transmits the encrypted music data, the copyright information, and the encrypted content key to the mobile phone 1.
[0042]
When the cellular phone 1 receives the encrypted music data (1) 205, the copyright information (1) 206, and the encrypted content key (1) 202 from the music information server 10, the memory controller 82 controls the controller 81 from the controller 81. The encrypted music data (1) 205, the copyright information (1) 206, and the encrypted content key (1) 202 are recorded on the memory card 20 via the data recording unit 840. Further, since the unique ID generation circuit 80 generates the unique ID 201 based on the telephone number of the mobile phone 1, the memory controller 82 also records the generated unique ID 201 on the memory card 20 via the data recording unit 840. . Thereby, the recording of the unique ID 201, the encrypted content key (1) 202, the encrypted music data (1) 205, and the copyright information (1) 206 on the memory card 20 ends.
[0043]
When reproducing the encrypted music data (1) 205, the controller 81 reproduces the unique ID 201, the encrypted content key (1) 202, and the encrypted music data (1) 205 recorded in the memory card 20. The data reproduction unit 85 is controlled.
[0044]
The data reproducing unit 85 reproduces the encrypted music data (1) 205 by a method described later.
[0045]
When only the desired music data is edited from the encrypted content key, the encrypted music data recorded on the plurality of memory cards, and the plurality of music data with the copyright information as one unit, the controller 81 The data editing unit 84 is controlled.
[0046]
The data editing unit 84 edits desired music data by a method described later.
[0047]
The configuration of the music information server 10 is not limited to that shown in FIG. 2, but may be the configuration shown in FIG. In FIG. 3, the configuration of the mobile phone 1 is the same as the configuration of the mobile phone 1 shown in FIG.
[0048]
The music information server 10 includes a reception unit 87, a unique ID recognition circuit 88, an encrypted content key generation circuit 89, a content key generation circuit 92, a data unit 93, an encryption circuit 94, and a transmission unit 91. Prepare.
[0049]
The functions of the reception unit 87, the unique ID recognition circuit 88, the encrypted content key generation circuit 89, and the transmission unit 91 are the same as those in FIG.
[0050]
The content key generation circuit 92 generates a content key for decrypting the encrypted music data obtained by encrypting the music data, and outputs the generated content key to the encrypted content key generation circuit 89 and the encryption circuit 94.
[0051]
The data unit 93 stores unencrypted music data together with the copyright information, and when the music data is designated by the receiving unit 87, the designated unencrypted music data is encrypted. The copyright information related to the music data is output to the transmission unit 91.
[0052]
The encryption circuit 94 encrypts the music data input from the data unit 93 with the content key input from the content key generation circuit 92, and outputs the encrypted music data to the transmission unit 91.
[0053]
An operation in which the owner of the mobile phone 1 purchases music data from the music information server 10 and reproduces the purchased music data will be described.
[0054]
The operation of calling the music information server 10 from the mobile phone 1 and specifying the music data to be purchased is the same as the description of FIG.
[0055]
The receiver 87 of the music information server 10 receives the telephone number of the mobile phone 1 and the number of the music data to be purchased by a call from the mobile phone 1, and outputs the telephone number of the mobile phone 1 to the unique ID recognition circuit 88. The music data number is output to the data section 93.
[0056]
The unique ID recognition circuit 88 recognizes the unique ID 201 from the input telephone number of the mobile phone 1, and outputs the recognized unique ID 201 to the encrypted content key generation circuit 89.
[0057]
When the data unit 93 receives the number of the music data to be purchased from the receiving unit 87, the data unit 93 outputs the music data corresponding to the number to the encryption circuit 94 and outputs copyright information regarding the music data to the transmitting unit 91.
[0058]
The content key generation circuit 92 generates a content key and outputs the generated content key to the encrypted content key generation circuit 89 and the encryption circuit 94.
[0059]
The encrypted content key generation circuit 89 encrypts the content key input from the content key generation circuit 92 based on the unique ID 201 input from the unique ID recognition circuit 88, and transmits the encrypted encrypted content key to the transmission unit 91. Output.
[0060]
The encryption circuit 94 encrypts the music data input from the data unit 93 with the content key input from the content key generation circuit 92, and outputs the encrypted music data to the transmission unit 91.
[0061]
The transmission unit 91 transmits the encrypted music data, the encrypted content key, and the copyright information to the mobile phone 1.
[0062]
The operation of the mobile phone 1 that has received the encrypted music data, the encrypted content key, and the copyright information is the same as that described with reference to FIG.
[0063]
The data configuration of the memory card 20 will be described with reference to FIG. The memory card 20 includes a security area 25 and a data unit 26. The security area 25 is an area that can be freely read by the owner of the mobile phone but cannot be read by a third party. The unit 26 is an area that can be read by a third party. The unique ID 201, the encrypted content key (1) 202, the encrypted content key (2) 203, and the encrypted content key (3) 204 are recorded in the security area 25, encrypted music data (1) 205, copyright Information (1) 206, encrypted music data (2) 207, copyright information (2) 208, encrypted music data (3) 209, and copyright information (3) 210 are recorded in the data area 26.
[0064]
The concept of editing encrypted music data received from the music information server 10 will be described with reference to FIG. A plurality of music data is recorded by the cellular phone 1 from the music information server 10 as a unit of encrypted music data, an encrypted content key for decrypting the encrypted music data, and copyright information related to the encrypted music data. There are a plurality of memory cards 21 and 22, and the desired music data is read from the music data recorded on the memory cards 21 and 22 and recorded on another memory card 23 different from the memory cards 21 and 22. In this application, it is called editing.
[0065]
The memory card 21 has a unique ID 201 of the mobile phone 1, “encrypted content key (1) 202, encrypted music data (1) 205, copyright information (1) 206”, “encrypted content key (3) 204”. , Encrypted music data (3) 209, copyright information (3) 210 ", and" encrypted content key (4) 211, encrypted music data (4) 214, copyright information (4) 215 ". The memory card 22 has a unique ID 201 of the mobile phone 1, “encrypted content key (2) 203, encrypted music data (2) 207, copyright information (2) 208”, “encrypted content key ( 5) 212, encrypted music data (5) 216, copyright information (5) 217 "," encrypted content key (6) 213, encrypted music data (6) 218, copyright information ( ) 219 "is recorded. In this case, among the music data recorded in the memory card 21, “encrypted content key (1) 202, encrypted music data (1) 205, copyright information (1) 206” and “encrypted content key ( 4) 211, encrypted music data (4) 214, copyright information (4) 215 "is selected, and among the music data recorded on the memory card 22," encrypted content key (5) 212, encrypted ""Music data (5) 216, copyright information (5) 217" is selected and recorded on the memory card 23, and the encrypted content key (1) 202 and the encrypted content key (4) 211 are deleted from the memory card 21. Then, by deleting the encrypted content key (5) 212 from the memory card 22, the editing of the music data from the memory cards 21 and 22 is completed. The encrypted content key, encrypted music data, and copyright information are read from the memory cards 21 and 22, and the read encrypted content key, encrypted music data, and copyright information are recorded on the memory card 23, and then the memory The reason why the encrypted content key read from the cards 21 and 22 is erased is to prevent free copying to another memory card after receiving the encrypted content key from the music information server 10 once.
[0066]
The operation of the editing concept described in FIG. 5 will be described with reference to FIG. The mobile phone 1 includes a unique ID generation unit 80, a controller 81, a memory controller 82, a bus 83, a data editing unit 84, a data reproduction unit 85, a reception unit 86, a D / A converter 61, a first memory unit 62, a first memory unit 62, 2 memory units 63 and an input unit 830.
[0067]
Since the unique ID generation unit 80, the controller 81, the memory controller 82, the bus 83, the reception unit 86, and the input unit 830 are the same as those described with reference to FIG.
[0068]
The memory cards 21 and 22 are inserted into and removed from the first memory unit 62, and the memory card 23 is inserted into and removed from the second memory unit 63.
[0069]
The data editing unit 84 includes a data recording unit 840, a data reading unit 841, and a data erasing unit 842. The data recording unit 840 receives the encrypted music data, the encrypted content key, and the copyright information received by the receiving unit 86 and the unique ID generated by the unique ID generating unit 80 via the bus 83 in the first memory. The encrypted music data, the encrypted content key, and the copyright information that are recorded on the memory cards 21 and 22 attached to the unit 62 and read by the data reading unit 841 are transmitted to the second memory via the bus 83. Recording is performed on the memory card 23 attached to the unit 63.
[0070]
The data reading unit 841 receives the encrypted music data designated based on the input from the input unit 830, the encrypted content key for decrypting the encrypted music data, and the copyright information related to the encrypted music data as a bus. 83, and reads out the encrypted music data, the encrypted content key, and the copyright information from the memory cards 21 and 22 attached to the first memory unit 62 via the 83 to the data recording unit 840. A signal indicating that the encrypted content key has been read is output to the data erasing unit 842.
[0071]
The data erasure unit 842 receives the signal from the data reading unit 841, specifies the encrypted content key read from the memory cards 21 and 22 attached to the first memory unit 62, and specifies the specified encryption The content key is erased from the memory cards 21 and 22 via the bus 83.
[0072]
As shown in FIG. 5, when editing the desired music data among the music data recorded on the memory cards 21 and 22 to the memory card 23, the memory card 21 is attached to the first memory unit 62. When a signal for editing the encrypted music data (1) 205 and the encrypted music data (4) 214 among the music data recorded on the memory card 21 is input from the input unit 830, the data reading unit 841 “Encrypted music data (1) 205, encrypted content key (1) 202, copyright information (1) 206” and “encrypted music data (4) 214, "Encrypted content key (4) 211, copyright information (4) 2015" is read, and the read "encrypted music data (1) 205, encrypted content key (1) 202, copyright information (1) 206 "and" encrypted music data (4) 214, encrypted content key (4) 211, copyright information (4) 2015 "are output to the data recording unit 840 and encrypted. A signal indicating that the encrypted content key (1) 202 and the encrypted content key (4) 211 are read is output to the data erasing unit 842. The data recording unit 840 inputs “encrypted music data (1) 205, encrypted content key (1) 202, copyright information (1) 206”, “encrypted music data (4) 214, encrypted content key”. (4) 211, copyright information (4) 2015 ”is recorded on the memory card 23 attached to the second memory unit 63. In addition, the data erasing unit 842 erases the encrypted content key (1) 202 and the encrypted content key (4) 211 from the memory card 21 attached to the first memory unit 62.
[0073]
Next, when the memory card 22 is attached to the first memory unit 62 and a signal for editing the encrypted music data (5) 216 is input from the input unit 830 to the music data recorded on the memory card 22, the data The reading unit 841 reads “encrypted music data (5) 216, encrypted content key (5) 212, copyright information (5) 217” from the memory card 22 attached to the first memory unit 62, The read “encrypted music data (5) 216, encrypted content key (5) 212, copyright information (5) 217” is output to the data recording unit 840 and the encrypted content key (5) 212 is read. A signal indicating this is output to the data erasing unit 842. The data recording unit 840 stores the input “encrypted music data (5) 216, encrypted content key (5) 212, copyright information (5) 217” in the memory card 23 attached to the second memory unit 63. Record. Further, the data erasing unit 842 erases the encrypted content key (5) 212 from the memory card 22 attached to the first memory unit 62. In addition, the data recording unit 840 records the unique ID 201 generated by the unique ID generation unit 80 in the memory card 23. Thus, the editing of music data from the memory cards 21 and 22 to the memory card 23 is completed.
[0074]
When reproducing music data recorded on the memory cards 20, 21, 22, 23, the controller 81 controls the data reproducing unit 85, and the data reproducing unit 85 is connected to the first memory unit via the bus 83. The encrypted music data and the like are read from the memory cards 20, 21, 22 attached to the memory card 62 or the memory card 23 attached to the second memory unit 63, and the music data is reproduced. Referring to FIG. 7, data reproduction unit 85 includes a first decoder 601 and a second decoder 602. The first decryptor 601 inputs the unique ID 201 read from the memory card 20 and the encrypted content key (1) 202, and the encrypted content key (1) 202 is encrypted based on the unique ID 201. If it is encrypted based on the unique ID 201, the encrypted content key (1) is decrypted and the decrypted content key is output to the second decryptor 602. When the encrypted content key (1) 202 is not encrypted based on the unique ID 201, the first decryptor 601 does not decrypt the encrypted content key (1) 202, and the encrypted music data (1) 205 Playback stops. That is, only when the encrypted content key (1) 202 is encrypted based on the unique ID 201, the encrypted music data (1) 205 can be decrypted and reproduced.
[0075]
The second decryptor 602 receives the encrypted music data (1) 205 read from the memory card 20, and the encrypted music data (1) 205 based on the content key input from the first decryptor 601. And the decoded music data is output to the D / A converter 61 shown in FIG. The D / A converter 61 converts music data from digital to analog and outputs it to an external output. Thereby, the music data recorded on the memory card is reproduced.
[0076]
In the present invention, the configuration of the mobile phone 1 that performs data editing is not limited to the configuration shown in FIG. 6, but may be the configuration shown in FIG. The mobile phone 1 shown in FIG. 8 has only the first memory unit 62 as compared with the configuration shown in FIG. 6, and the data editing unit 70 includes a data recording unit 840, a data reading unit 841, and a data erasing unit. The only difference is that it includes 842 and the storage unit 843, and the others are the same. Among the components of the data editing unit 70, the data recording unit 840, the data reading unit 841, and the data erasing unit 842 are the same as those shown in FIG. The storage unit stores the encrypted music data, the encrypted content key, and the copyright information read by the data reading unit 841, and the encrypted music data and the encryption stored in the data recording unit 840 by a signal from the data recording unit 840. Output the content key and copyright information.
[0077]
As shown in FIG. 5, when editing the desired music data among the music data recorded on the memory cards 21 and 22 to the memory card 23, the memory card 21 is attached to the first memory unit 62. When a signal for editing the encrypted music data (1) 205 and the encrypted music data (4) 214 among the music data recorded on the memory card 21 is input from the input unit 830, the data reading unit 841 "Encrypted music data (1) 205, encrypted content key (1) 202, copyright information (1) 206" and "encrypted music data (4) 214,""Encrypted content key (4) 211, copyright information (4) 2015" is read, and the read "encrypted music data (1) 205, encrypted content key (1) 202, copyright information (1) 206 "and" encrypted music data (4) 214, encrypted content key (4) 211, copyright information (4) 2015 "are output to the storage unit 843 and encrypted. A signal indicating that the content key (1) 202 and the encrypted content key (4) 211 are read is output to the data erasing unit 842. The storage unit 843 receives the input “encrypted music data (1) 205, encrypted content key (1) 202, copyright information (1) 206”, “encrypted music data (4) 214, encrypted content key ( 4) 211, copyright information (4) 2015 ". In addition, the data erasing unit 842 erases the encrypted content key (1) 202 and the encrypted content key (4) 211 from the memory card 21 attached to the first memory unit 62.
[0078]
Next, when the memory card 22 is attached to the first memory unit 62 and a signal for editing the encrypted music data (5) 216 is input from the input unit 830 to the music data recorded on the memory card 22, the data The reading unit 841 reads “encrypted music data (5) 216, encrypted content key (5) 212, copyright information (5) 217” from the memory card 22 attached to the first memory unit 62, The read “encrypted music data (5) 216, encrypted content key (5) 212, copyright information (5) 217” is output to the storage unit 843 and the encrypted content key (5) 212 is read. Is output to the data erasing unit 842. The storage unit 843 stores the input “encrypted music data (5) 216, encrypted content key (5) 212, copyright information (5) 217”. Further, the data erasing unit 842 erases the encrypted content key (5) 212 from the memory card 22 attached to the first memory unit 62.
[0079]
Next, when the data editing memory card 23 is inserted in the first memory unit 62, the data recording unit 840 stores “encrypted music data (1) stored in the storage unit 843 based on control from the controller 81. 205, encrypted content key (1) 202, copyright information (1) 206 "," encrypted music data (4) 214, encrypted content key (4) 211, copyright information (4) 2015 ", and" The encrypted music data (5) 216, the encrypted content key (5) 212, and the copyright information (5) 217 ”are read out, and the read“ encrypted music data (1) 205 and encrypted content key (1) 202 ”are read out. , Copyright information (1) 206 "," encrypted music data (4) 214, encrypted content key (4) 211, copyright information (4) 2015 ", and" encrypted music data ". (5) 216, the encrypted content key (5) 212, and records the copyright information (5) 217 'of the memory card 23 attached to the first memory unit 62 via the bus 83. In addition, the data recording unit 840 records the unique ID 201 generated by the unique ID generation unit 80 in the memory card 23. Thus, the editing of music data from the memory cards 21 and 22 to the memory card 23 is completed.
[0080]
In the configuration of the mobile phone 1 shown in FIG. 8, all edited music data is read, and the read music data is stored in the storage unit 843 and then recorded on a newly installed memory card. Accordingly, the recording operation may be performed once, so that quick editing can be performed.
[0081]
In the above description, the music data is recorded on the two memory cards from the music information server and then the music data is edited. However, in the present invention, the present invention is not limited to this. In this case, after music data is recorded on the memory card, the music data recorded on at least one memory card extracted from the n memory cards is edited.
[0082]
Further, after the encrypted music data and the copyright information are copied to another medium, it is not erased from the original recorded medium, but is not limited to this. The encrypted content key, the encrypted music data, and The copyright information may also be deleted from the original medium. In this case, the data erasure unit 842 constituting the data editing units 70 and 84 erases the encrypted music data, the copyright information, and the encrypted content key from the original medium.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining the concept of a music distribution system.
FIG. 2 is a configuration diagram of a mobile phone and a music information server.
FIG. 3 is another configuration diagram of the mobile phone and the music information server.
FIG. 4 is a configuration diagram of a memory card.
FIG. 5 is a diagram for explaining the concept of data editing.
FIG. 6 is a configuration diagram of a mobile phone having a data editing function.
7 is a configuration diagram of a data reproducing unit shown in FIG. 6. FIG.
FIG. 8 is another configuration diagram of a mobile phone having a data editing function.
[Explanation of symbols]
1 ... Mobile phone
10 ... Music information server
15 ... Headphone
20, 21, 22, 23... Memory card
25 ... Security area
26: Data area
61 ... D / A converter
62 ... 1st memory part
63 ... Second memory section
80 ... Unique ID generator
81 ... Controller
82 ... Memory controller
83 ... Bus
70, 84 ... Data editing section
85: Data reproduction unit
86, 87 ... receiver
88 ... Unique ID recognition circuit
89 ... Encrypted content key generation circuit
90, 93 ... Data part
91: Transmitter
92 ... Content key generation circuit
94: Encryption circuit
201 ... Unique ID 1
202 ... Encrypted content key (1)
203 ... Encrypted content key (2)
204 ... Encrypted content key (3)
205 ... Encrypted music data (1)
207 ... Encrypted music data (2)
209 ... Encrypted music data (3)
206 ... Copyright information (1)
208 ... Copyright information (2)
210 ... Copyright information (3)
211 ... Encrypted content key (4)
212 ... Encrypted content key (5)
213 ... Encrypted content key (6)
214 ... Encrypted music data (4)
215 ... Copyright information (4)
216: Encrypted music data (5)
217 ... Copyright information (5)
218 ... Encrypted music data (6)
219 ... Copyright information (6)
601 ... First decoder
602 ... Second decoder
830 ... Input unit
840: Data recording unit
841... Data reading unit
842 ... Data erasure unit
843 ... Storage unit

Claims (3)

Encrypted music data designated based on a call from a mobile phone, copyright information related to the encrypted music data, and an encrypted content key obtained by encrypting a content key for decrypting the encrypted music data A mobile phone used in a music distribution system that distributes music data by transmitting to a phone,
A unique ID that depends on the phone number of the mobile phone,
N number of media capable of recording copyright information, encrypted music data encrypted with a content key, and a plurality of music data with an encrypted content key encrypted based on the unique ID as a unit; ,
A unique ID generating unit for generating the unique ID;
An input unit for extracting at least one medium from the n media and selecting desired music data from among the music data recorded on the extracted medium;
Recording the unique ID generated by the unique ID generation unit and the received encrypted music data, copyright information, and encrypted content key on a medium;
Based on the input from the input unit, the desired music data recorded on the extracted medium is read, and the read desired music data is recorded on another medium different from the extracted medium, and the extraction is performed. A data editing unit that erases the encrypted content key that constitutes the music data read from the recorded medium and recorded on the other medium from the extracted medium;
A cellular phone used in a music distribution system including a data reproducing unit that reproduces music data recorded on a medium. The data editing unit, based on an input from the input unit, a data reading unit that reads out desired music data recorded on the extracted medium;
Recording the unique ID generated by the unique ID generation unit and the received encrypted music data, copyright information, and encrypted content key on a medium;
A data recording unit for recording desired music data read by the data reading unit on another medium different from the extracted medium;
The music distribution according to claim 1, further comprising: a data erasure unit that erases an encrypted content key that constitutes music data read from the extracted medium and recorded on the other medium from the extracted medium. Mobile phone used for the system. The data editing unit, based on an input from the input unit, a data reading unit that reads out desired music data recorded on the extracted medium;
A storage unit for storing desired music data read by the data reading unit;
Recording the unique ID generated by the unique ID generation unit and the received encrypted music data, copyright information, and encrypted content key on a medium;
A data recording unit for recording desired music data stored in the storage unit on another medium different from the extracted medium;
The music distribution according to claim 1, further comprising: a data erasure unit that erases an encrypted content key that constitutes music data read from the extracted medium and recorded on the other medium from the extracted medium. Mobile phone used for the system.

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