JP2005038234A - Recording device and method, reproducing device and method, program, and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent illegal use, and to allow use of a content in a plurality of pieces of equipment by a person having a normal use right. <P>SOLUTION: The first key and the content stored in a first recording medium are read out in a step S1002, and a second key transmitted from a recording medium having a transmission means is received in a step S1004. Correspondence between a first key and a second key is determined based on the first key and the second key, in a step S1006, and the content is enciphered in a step S1008, when the correspondence between the first key and the second key is determined correct. The enciphered content and the first key are recorded in the second recording medium in a step S1009. The present invention is applicable for a personal computer for recording the content. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a recording apparatus and method, a reproducing apparatus and method, a program, and a storage medium, and more particularly to a recording apparatus and method, a reproducing apparatus and method, a program, and a storage medium for recording content or reproducing content.

  With the spread of personal computers, users of personal computers can easily duplicate the content of music recorded on music CDs (Compact Discs).

  There is a problem that data replicated in this way is exchanged over the Internet.

  For the purpose of preventing or deterring such duplication beyond private duplication, CDs are sold that apply the technical protection measures referred to in the Copyright Act. AVEX's copy control CD cannot rip (record on a hard disk, etc.) recorded CD-DA (CD-Digital Audio) data to a personal computer. In addition to the CD-DA data, low quality audio data is recorded on the extra track on the copy control CD, and the personal computer can record this low quality audio data on the hard disk.

  In SME (Sony Music Entertainment) Label Gate CD (trademark), authentication and payment of charges via the Internet are required for the second and subsequent copies of audio data on personal computers.

  In other words, the AVEX copy control CD does not allow any CD-DA data to be recorded on a personal computer, and the SME label gate CD allows audio data to be copied for a fee.

  In addition, there is a case where control data recorded on a CD and used by a data reader is wrong or inaccurate (for example, see Patent Document 1).

Japanese translation of PCT publication No. 2003-500789

  Rather than listening to music with a CD player, the use of portable CDs that can be carried around and the use of purchased CDs on multiple personal computers at home and at work is becoming mainstream.

  However, CDs with technical protection cannot be used to enjoy music from CDs purchased on multiple personal computers, or music can be enjoyed on multiple personal computers despite the regular purchase of the CD. Otherwise, you will have to pay a separate fee. It can also be said that it deprives the person who has purchased the CD the chance to enjoy the music recorded on the CD.

  When audio data is copied on a personal computer for the second time or later, if authentication is required via the Internet and payment of a fee is required, a huge cost is generated on the provider side for monitoring usage and authentication. Yes.

  The first recording apparatus of the present invention includes a read control unit that controls reading of the first key and content recorded in the first recording medium, and a second transmission unit that is transmitted from a storage medium having a transmission unit. A reception control means for controlling reception of the key, a determination means for determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key; When it is determined that the correspondence between the key and the second key is correct, the encryption means for encrypting the content, and the recording of the encrypted content and the first key on the second recording medium are controlled. And a recording control means.

  The recording control means controls the recording of the content and the first key onto the second recording medium by controlling the recording of the content in which the first key is embedded at a predetermined position. Can do.

  The encryption unit can encrypt the content with the first key.

  The encryption means can encrypt the content with the second key.

  The reception control means further controls reception of rights management information transmitted from the recording medium for managing the use of content, and the recording control means further controls recording of the rights management information on the second recording medium. To be able to.

  The first recording method of the present invention includes a read control step for controlling reading of a first key and content recorded on a first recording medium, and a second transmitted from a storage medium having transmission means. A reception control step for controlling reception of the key, a determination step for determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key, and a first step When it is determined that the correspondence between the key and the second key is correct, the encryption step for encrypting the content and the recording of the encrypted content and the first key on the second recording medium are controlled. And a recording control step.

  A first program of the present invention includes a read control step for controlling reading of a first key and content recorded on a first recording medium, and a second key transmitted from a storage medium having a transmission means. A reception control step for controlling reception of the first key, a determination step for determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key, When it is determined that the correspondence between the key and the second key is correct, the encryption step for encrypting the content, and the recording for controlling the recording of the encrypted content and the first key on the second recording medium The control step is executed by a computer.

  The first reproducing apparatus of the present invention controls the reception of the second key transmitted from the storage medium having the reading control means for controlling the reading of the first key recorded on the recording medium and the transmission means. Based on the reception control means, the first key and the second key, the first determination means for determining whether the correspondence between the first key and the second key is correct, the first key, And decrypting means for decrypting the content recorded on the recording medium when it is determined that the correspondence with the second key is correct.

  The reading control means further controls reading of the rights management information recorded in the recording medium for managing the use of the content, and determines whether or not the use of the content is permitted based on the rights management information. And a second determining unit configured to decrypt the content when it is determined that the use of the content is permitted.

  The playback apparatus can further include an updating unit that updates the rights management information in response to use of the decrypted content, and a recording control unit that controls recording of the updated rights management information on the recording medium.

  The reception control means further controls reception of the rights management information transmitted from the storage medium, and when it is determined that the correspondence between the first key and the second key is correct, the reception control means is based on the received rights management information. Further, update means for updating the rights management information read from the recording medium and recording control means for controlling recording of the updated rights management information on the recording medium can be further provided.

  The first reproducing method of the present invention controls the reading control step for controlling reading of the first key recorded on the recording medium and the reception of the second key transmitted from the storage medium having the transmitting means. A reception control step, a determination step for determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key, and the first key and the second key A decryption step of decrypting the content recorded on the recording medium when it is determined that the correspondence with the key is correct.

  The second program of the present invention causes a computer to receive a second key transmitted from a storage medium having a reading control step for controlling reading of the first key recorded on the recording medium and a transmission means. A reception control step for controlling, a determination step for determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key, and the first key and the second key When it is determined that the correspondence with the key 2 is correct, a decrypting step for decrypting the content recorded on the recording medium is executed.

  The second recording apparatus of the present invention includes a read control unit that controls reading of the first key and content recorded in the first recording medium, and a second transmission unit that is transmitted from a storage medium having a transmission unit. A reception control means for controlling reception of the key, a determination means for determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key; If it is determined that the correspondence between the key and the second key is correct, the key generation means for generating the third key from its own unique information and the first key, and the content is encrypted with the third key And a recording control unit for controlling recording of the encrypted content and the first key onto the second recording medium.

  The recording control means controls the recording of the content and the first key onto the second recording medium by controlling the recording of the content in which the first key is embedded at a predetermined position. Can do.

  The second recording method of the present invention includes a read control step for controlling reading of the first key and the content recorded on the first recording medium, and a second transmitted from the storage medium having a transmission means. A reception control step for controlling reception of the key, a determination step for determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key, and a first step If it is determined that the correspondence between the key and the second key is correct, a key generation step of generating a third key from its own unique information and the first key, and encrypting the content with the third key And a recording control step for controlling recording of the encrypted content and the first key onto the second recording medium.

  A third program of the present invention includes a read control step for controlling reading of a first key and content recorded on a first recording medium, and a second key transmitted from a storage medium having transmission means. A reception control step for controlling reception of the first key, a determination step for determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key, When it is determined that the correspondence between the key and the second key is correct, a key generation step for generating a third key from its own unique information and the first key, and the content is encrypted with the third key And a recording control step for controlling the recording of the encrypted content and the first key onto the second recording medium.

  The second playback device of the present invention generates the second key from the reading control means for controlling the reading of the first key recorded in the recording medium, the own unique information and the first key. And a key generation unit for decrypting the content recorded on the recording medium with the second key.

  The second reproduction method of the present invention generates the second key from the read control step for controlling the reading of the first key recorded on the recording medium, the own unique information and the first key. And a decrypting step of decrypting the content recorded on the recording medium with the second key.

  According to a fourth program of the present invention, there is provided a second key from a reading control step for controlling reading of a first key recorded in a recording medium on a computer, its own unique information and the first key. And a decryption step of decrypting the content recorded on the recording medium with the second key.

  The storage medium of the present invention is a storage means for storing a second key for determining whether or not the correspondence with the first key recorded together with the content on the recording medium is correct; Or a transmission means for transmitting the second key to the device for reproducing the content.

  The storage means may further store rights management information for managing the use of content, and the transmission means may send rights management information to the apparatus.

  An image related to the content can be copied to the outer shape of the storage medium.

  In the first recording apparatus, the first recording method, and the first program of the present invention, reading of the first key and content recorded in the first recording medium is controlled, and a transmission unit is provided. Reception of the second key transmitted from the storage medium is controlled. Based on the first key and the second key, it is determined whether or not the correspondence between the first key and the second key is correct, and the correspondence between the first key and the second key is correct. Is determined, the content is encrypted, and the recording of the encrypted content and the first key on the second recording medium is controlled.

  In the first playback device, the first playback method, and the second program of the present invention, reading of the first key recorded on the recording medium is controlled, and the first key is transmitted from the storage medium having the transmission means. Reception of the second key is controlled. Based on the first key and the second key, it is determined whether or not the correspondence between the first key and the second key is correct, and the correspondence between the first key and the second key is correct. Is determined, the content recorded on the recording medium is decrypted.

  In the second recording apparatus, the second recording method, and the third program of the present invention, reading of the first key and content recorded in the first recording medium is controlled, and a transmission unit is provided. Reception of the second key transmitted from the storage medium is controlled. Based on the first key and the second key, it is determined whether or not the correspondence between the first key and the second key is correct, and the correspondence between the first key and the second key is correct. Is determined, a third key is generated from its own unique information and the first key. Further, the content is encrypted with the third key, and the recording of the encrypted content and the first key on the second recording medium is controlled.

  In the second playback device, the second playback method, and the fourth program of the present invention, the reading of the first key recorded in the recording medium is controlled, and the own unique information and the first program are controlled. A second key is generated from the key. Then, the content recorded on the recording medium is decrypted with the second key.

  In the storage medium of the present invention, a second key for determining whether the correspondence with the first key recorded together with the content on the recording medium is correct is stored, the content is recorded, or the content The second key is transmitted to the device that reproduces.

  The recording device may be an independent device or a block that performs recording processing of the recording / reproducing device. The playback device may be an independent device or a block that performs playback processing of the recording / playback device. The storage medium may be a single unit or may be incorporated into a tangible object having another certain form.

  In addition to preventing unauthorized use, a person who has a right to use the content can use the content on a plurality of devices.

  Embodiments of the present invention will be described below. The correspondence relationship between the invention described in this specification and the embodiments of the invention is exemplified as follows. This description is intended to confirm that the embodiments supporting the invention described in this specification are described in this specification. Therefore, although there is an embodiment which is described in the embodiment of the invention but is not described here as corresponding to the invention, it means that the embodiment is not It does not mean that it does not correspond to the invention. Conversely, even if an embodiment is described herein as corresponding to an invention, that means that the embodiment does not correspond to an invention other than the invention. Absent.

  Further, this description does not mean all the inventions described in this specification. In other words, this description is for the invention described in the present specification, which is not claimed in this application, that is, for the invention that will be applied for in the future or that will appear and be added by amendment. It does not deny existence.

  The recording apparatus according to claim 1 is a reading control unit that controls reading of the first key and the content recorded on the first recording medium (for example, the CPU 101 that executes the process of step S1002 in FIG. 7). A reception control means for controlling the reception of the second key transmitted from the storage medium having the transmission means (for example, the CPU 101 that executes the process of step S1004 in FIG. 7), the first key, and the second key Based on the determination means (for example, the CPU 101 that executes the process of step S1006 in FIG. 7) for determining whether the correspondence between the first key and the second key is correct, the first key and the second key When it is determined that the correspondence with the key is correct, the encryption means for encrypting the content (for example, the CPU 101 that executes the process of step S1008 in FIG. 7), the encrypted content, and the first key of the first key 2 Recording control means for controlling recording of the recording medium (e.g., CPU 101 executing the processing in step S1009 in FIG. 7); and a.

  The reproduction apparatus according to claim 8 includes a read control unit (for example, the CPU 101 that executes the process of step S1024 in FIG. 9) and a transmission unit that control reading of the first key recorded in the recording medium. Based on the reception control means for controlling the reception of the second key transmitted from the storage medium (for example, the CPU 101 that executes the process of step S1023 in FIG. 9), the first key, and the second key, the first key is used. First determination means for determining whether the correspondence between the key and the second key is correct (for example, the CPU 101 that executes the process of step S1026 in FIG. 9), the first key, and the second key In the case where it is determined that the correspondence is correct, it includes a decoding unit (for example, the CPU 101 that executes the process of step S1028 in FIG. 9) for decoding the content recorded on the recording medium.

  The recording device according to claim 14 is a read control means for controlling the reading of the first key and the content recorded on the first recording medium (for example, the CPU 101 that executes the process of step S1052 in FIG. 11). A reception control means for controlling reception of the second key transmitted from the storage medium having the transmission means (for example, the CPU 101 that executes the process of step S1054 in FIG. 11), the first key, and the second key Based on the determination means (for example, the CPU 101 that executes the process of step S1056 in FIG. 11) for determining whether or not the correspondence between the first key and the second key is correct, and the first key and the second key When it is determined that the correspondence with the key is correct, key generation means for generating a third key from its own unique information and the first key (for example, the CPU 101 that executes the process of step S1058 in FIG. 11). When, And encryption means for encrypting the content with the key 3 and recording control means for controlling the recording of the encrypted content and the first key on the second recording medium (for example, the processing of step S1060 in FIG. 11). CPU 101 to be executed.

  The playback apparatus according to claim 18 includes a read control unit that controls reading of the first key recorded on the recording medium (for example, the CPU 101 that executes the process of step S1072 in FIG. 12), Content recorded on the recording medium with the key generation means (for example, the CPU 101 that executes the process of step S1073 in FIG. 12) and the second key to generate the second key from the unique information and the first key Decoding means (for example, the CPU 101 that executes the process of step S1075 in FIG. 12).

  The storage medium according to claim 21 is a storage means for storing a second key for determining whether or not the correspondence with the first key recorded together with the content on the recording medium is correct (for example, FIG. 6). EEPROM 224) and a transmission means (for example, the data transmission unit 227 in FIG. 6) for transmitting the second key to the device for recording the content or reproducing the content.

  FIG. 1 is a diagram showing a configuration of an embodiment of a content recording / playback system according to the present invention. A CD (Compact Disc) 1 on which audio data as an example of content is recorded is stored in a case 2 and sold to a user together with a non-contact IC card 3. The content recorded on the CD 1, which is an example of the recording medium, may be information that is significant for the user, such as audio data, image data, a program, and character data. The recording medium is a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like, as long as it can record data (including content).

  Hereinafter, audio data will be described as an example of content, and CD 1 will be described as an example of a recording medium. Of course, the content in the present invention is not limited to audio data, and the recording medium in the present invention is not limited to a CD.

  In the case 2, a liner or the like on which an image related to the content recorded on the CD 1 is printed is inserted. The non-contact IC card 3 stores data required for recording or reproducing the content of the CD 1 and transmits the data to a device that records or reproduces the content.

  The non-contact IC card 3 is printed with an image related to the content recorded on the CD 1. For example, on one side of the non-contact IC card 3, a photograph of the author who composed or wrote the music reproduced by the audio data that is the content recorded on the CD 1 or a performer who demonstrates this is printed. Has been. The image of the external part of the non-contact IC card 3 is not limited to printing, but is reproduced by a photograph or a method similar to a photograph.

  The non-contact IC card 3 which is an example of the storage medium does not necessarily have to be in the form of a card. Instead of the non-contact IC card 3, the non-contact IC is a case 1, liner notes, or the CD 1 itself. You may make it incorporate in the article | item related to.

  The audio data of the CD 1 is recorded so that it can be read by the audio player 4 and cannot be read by the personal computer 5, PDA 6, or mobile phone with music playback function 7 except by a specific program. More specifically, for example, incorrect timing information is recorded on the CD 1 as control data. As a result, the audio player 4 continues to play even if the timing information is incorrect, so that the audio data recorded on the CD 1 can be played. On the other hand, when the personal computer 5, PDA 6, or mobile phone with music playback function 7 that executes a normal voice reading program (so-called ripping program) detects an error in the timing information, it identifies and corrects the error. Therefore, the audio data recorded on the CD 1 cannot be read.

  Further, for example, data indicating that copying is prohibited is recorded in the subcode of CD1, and the personal computer 5, the PDA 6, or the cellular phone with music playback function 7 does not copy audio data when reading this data. May be.

  Note that the present invention is not limited by the means for prohibiting the copying of content on a recording medium.

  The personal computer 5, PDA 6, or mobile phone 7 with music playback function is equipped with a reader / writer 8 for communication with the non-contact IC card 3, or has a built-in reader / writer 8. The personal computer 5, PDA 6, or mobile phone with music playback function 7 has a built-in drive for reading data from the CD 1, or can be connected to a drive for reading data from the CD 1.

  The personal computer 5, PDA 6, or mobile phone 7 with a music playback function that executes a recording / playback program, which will be described later, reads and stores the audio data of the CD 1 when receiving predetermined data from the non-contact IC card 3. Recording on a recording medium such as a hard disk or a semiconductor memory.

  Each of the personal computer 5, the PDA 6, or the mobile phone 7 with a music playback function reads out audio data from one CD 1, and the read out audio data is a built-in or mounted hard disk or semiconductor memory. Recording medium (recording medium different from CD1).

  The personal computer 5, PDA 6, or mobile phone with music playback function 7 that executes the recording / playback program reads out and plays back the audio data recorded on the built-in or attached recording medium.

  For example, the personal computer 5, PDA 6, or mobile phone 7 with a music playback function that executes a recording / playback program is built in or mounted when the non-contact IC card 3 is brought close to (held over). Audio data recorded on the recording medium is read and reproduced.

  For example, when audio data is recorded on the personal computer 5, PDA 6, or mobile phone with music playback function 7 that executes the recording / playback program, the voice data is recorded on the built-in or attached recording medium. Read and play the audio data.

  For example, the personal computer 5, PDA 6, or mobile phone with music playback function 7 that executes the recording / playback program is built in for a predetermined number of times or for a predetermined period based on the right management information stored in the non-contact IC card 3. The audio data recorded on the recording medium that is installed or attached is read and reproduced.

  As shown in FIG. 2, for example, when the personal computer 5-1 is executing the recording / reproducing program 11-1, when receiving predetermined data from the non-contact IC card 3, the personal computer 5-1 reads the audio data of the CD 1. To the internal hard disk. The personal computer 5-1 executing the recording / reproducing program 11-1 reads the audio data recorded on the hard disk and reproduces the audio.

  For example, when the personal computer 5-2 is executing the recording / reproducing program 11-2, when receiving predetermined data from the non-contact IC card 3, the personal computer 5-2 reads the audio data of the CD 1 and stores it in the built-in hard disk. Record. The personal computer 5-2 executing the recording / reproducing program 11-2 reads the audio data recorded on the hard disk and reproduces the audio. For example, when the personal computer 5-3 is executing the recording / reproducing program 11-3, when receiving predetermined data from the non-contact IC card 3, the personal computer 5-3 reads the audio data of the CD 1 and stores it in the built-in hard disk. Record. The personal computer 5-3 executing the recording / reproducing program 11-3 reads out the audio data recorded on the hard disk and reproduces the audio.

  For example, when the PDA 6 is executing the recording / reproducing program 11-4, when receiving predetermined data from the non-contact IC card 3, the PDA 6 reads out the audio data of the CD 1 by a CD drive (not shown) and incorporates it. Record in semiconductor memory. The PDA 6 executing the recording / reproducing program 11-4 reads out the audio data recorded in the semiconductor memory and reproduces the audio.

  The recording / reproducing program 11-1 to the recording / reproducing program 11-4 are described (programmed) corresponding to a device that executes the recording / reproducing program 11-4. For example, the recording / reproducing program 11-1 to the recording / reproducing program 11-4 can be downloaded free of charge via a network by a provider who sells CD1, or a CD-ROM (Compact Disc-Read Only Memory) or the like. By being recorded on a recording medium and distributing the recording medium free of charge, it is provided to the user free of charge. Further, for example, the provider may record the recording / reproducing program 11-1 to the recording / reproducing program 11-4 on the CD 1 and provide it to the user.

  When it is not necessary to distinguish the recording / reproducing program 11-1 to the recording / reproducing program 11-4, they are simply referred to as a recording / reproducing program 11.

  Hereinafter, the personal computer 5 will be described as an example of a recording device or a reproducing device.

  FIG. 3 is a block diagram for explaining data recorded on the CD 1 and data stored on the non-contact IC card 3. A CD key 32 is recorded along with the audio data 31 on the CD 1. The CD key 32 is data used for determining whether the process of encrypting the audio data 31, the process of decrypting the audio data 31, and the process of recording or reproducing the audio data 31 are valid processes. It is. For example, the CD key 32 is composed of 56-bit to 168-bit data. The CD key 32 has a specific value for one piece of audio data 31. That is, the CD key 32 has the same value if the audio data 31 is the same.

  When the CD 1 is loaded, the audio player 4 reads the audio data 31 and reproduces the audio. In this case, the audio player 4 does not use the CD key 32.

  The contactless IC card 3 stores a card key 33 and right management information 34 for controlling reproduction of the audio data 31. The card key 33 is data used to determine whether the encryption process of the audio data 31, the decryption process of the audio data 31, and the recording or reproduction process of the audio data 31 are legitimate processes. It is. The CD key 32 and the card key 33 have a predetermined correspondence relationship. For example, there is a relationship that a value obtained as a result of applying a predetermined hash function to the CD key 32 is equal to the card key 33.

  Conversely, for example, a value obtained as a result of applying a predetermined hash function to the card key 33 may be equal to the CD key 32.

  For example, a value obtained as a result of applying a predetermined encryption method to a CD key 32 with a predetermined key may be equal to the card key 33.

  That is, the recording / reproducing program 11 only needs to be able to determine whether or not the CD key 32 and the card key 33 have a corresponding relationship by an operation that only the recording / reproducing program 11 can know. In other words, with respect to the CD key 32 and the card key 33, only the recording / reproducing program 11 can determine whether the correspondence between the CD 1 that records the CD key 32 and the non-contact IC card 3 that stores the card key 33 is correct. Have the following values:

  The non-contact IC card 3 transmits the stored card key 33 and right management information 34 to the personal computer 5 by a modulation unit and an antenna described later.

  The rights management information 34 is rights management information referred to in the Copyright Act, and controls the reproduction of the audio data 31 in which the reproduction period of the audio data 31 or the number of times reproduction is permitted is described. Information.

  The personal computer 5 executing the recording / reproducing program 11 reads the audio data 31 and the CD key 32 from the CD 1 when the CD 1 is loaded and recording is requested. The personal computer 5 receives the card key 33 transmitted from the non-contact IC card 3 by the reader / writer 8.

  If it is determined that the correspondence between the card key 33 transmitted from the non-contact IC card 3 and the CD key 32 read from the CD 1 is correct, the personal computer 5 executing the recording / reproducing program 11 performs the audio data 31 is encrypted and recorded on the hard disk. When a predetermined mode to be described later is selected, the personal computer 5 receives the rights management information 34 transmitted from the non-contact IC card 3 by the reader / writer 8 and records it on the hard disk.

  The personal computer 5 executing the recording / reproducing program 11 reproduces the audio data 31 recorded on the hard disk when reproduction is requested.

  Next, an example of the internal configuration of the personal computer 5 will be described with reference to FIG.

  The central processing unit (CPU) 101 is composed of, for example, a Pentium (registered trademark) processor manufactured by Intel, and is connected to a front side bus (FSB) 102. A north bridge 103 is further connected to the FSB 102, and the north bridge 103 (hub) has an AGP (Accelerated Graphics Port) 550 and is connected to the hub interface 106.

  The north bridge 103 includes, for example, an Intel Memory Controller Hub 82865PE, and controls the CPU 101 and RAM (Random Access Memory) 104 (so-called main memory). Further, the north bridge 103 controls the video controller 107 via the AGP 550. The video controller 107 controls an LCD 151 or a VGA (Video Graphics Array) type display (hereinafter referred to as VGA 152).

  The video controller 107 receives data (such as image data or text data) supplied from the CPU 101 and generates image data corresponding to the received data, or a video memory (not-ready) containing the received data as it is. Stored in the figure). The video controller 107 displays an image corresponding to the image data stored in the video memory on the LCD 151 or the VGA 152. The LCD 151 or VGA 152 displays an image or text based on the data supplied from the video controller 107.

  The north bridge 103 is further connected to a cache memory 105. The cache memory 105 is configured by a memory that can execute a faster write or read operation than the RAM 104, such as an SRAM (Static RAM), and caches (temporarily stores) a program or data used by the CPU 101. .

  Note that the CPU 101 has a cache that can operate at a higher speed than the cache memory 105 that is primary, and that is controlled by the CPU 101 itself.

  The RAM 104 is constituted by, for example, a DRAM (Dynamic RAM), and stores a program executed by the CPU 101 or data necessary for the operation of the CPU 101. Specifically, for example, the RAM 104 stores an operating system, a WWW (World-Wide Web) browsing program, a recording / reproducing program 11 and the like loaded from the HDD 117 when the activation is completed.

  The operating system (OS (Operating System)) controls basic computer operations such as the so-called Windows (registered trademark) XP of Microsoft or the so-called Mac OS (registered trademark) of Apple Computer. It is a program to do.

  The north bridge 103 is also connected to the south bridge 108 (hub) via the hub interface 106. The south bridge 108 is composed of, for example, Intel 8801EB, etc., and includes an AC97 link interface 58A, a USB (Universal Serial Bus) interface 108B, an IDE (Integrated Drive Electronics) interface 108C, and a PCI (Peripheral Component Interconnect) interface 108D. , An LPC (Low Pin Count) interface 108E, a LAN interface 108F, and the like are incorporated.

  The south bridge 108 controls various I / Os (Input / Output) such as control of devices connected via devices connected to the AC97 link bus 109, USB bus 110, and IDE bus 111.

  A modem 112 and a sound controller 113 are connected to the AC97 link bus 109. The modem 112 is connected to a public line network, and executes communication processing via the public line network or the Internet (both not shown). The sound controller 113 captures sound from the microphone 153, generates data corresponding to the sound, and outputs the data to the RAM 104. In addition, the sound controller 113 drives the speaker 154 and causes the speaker 154 to output sound.

  A USB connector 114 is connected to the USB bus 110 of the south bridge 108 so that various USB devices can be connected. The reader / writer 8 is connected to the USB bus 110 via the USB connector 114. In addition, a memory stick slot 115 and a Bluetooth communication unit 116 are provided via the USB bus 110. A Memory Stick (trademark) 155 is connected to the memory stick slot 115.

  The memory stick 155 is a type of flash memory card developed by Sony Corporation, the applicant of the present application. This Memory Stick 155 is an EEPROM (Electrically Erasable and Programmable Read Only Memory) that is a non-volatile memory that can be electrically rewritten and erased in a small and thin plastic case with a length of 21.5 x width 50 x thickness 2.8 [mm]. A flash memory element is stored, and various data such as images, sounds, music, and the like can be written and read via a 10-pin terminal.

  The Memory Stick 155 uses a unique serial protocol that ensures compatibility with the devices used even when the specifications of the built-in flash memory are changed due to an increase in capacity, etc., and a maximum writing speed of 1.5 [MB / S In addition to realizing high-speed performance with a maximum reading speed of 2.45 [MB / S], a high-reliability is secured by providing an erroneous erasure prevention switch.

  The Bluetooth communication unit 116 performs communication according to the Bluetooth standard. The USB interface 108B transmits data to an external device connected via the USB bus 110 and receives data from the device.

  The IDE interface 108C includes two IDE controllers, a so-called primary IDE controller and a secondary IDE controller, a configuration register, and the like (both not shown).

  An HDD 117 is connected to the primary IDE controller via the IDE bus 112. Further, when a so-called IDE device such as a CD-ROM drive 118 or an HDD (not shown) is attached to another IDE bus, the attached IDE device is electrically connected to the secondary IDE controller. .

  A LAN (Local Area Network) connector 119 is connected to a network such as a LAN. The LAN interface 108F transmits data to the network connected to the LAN connector 119 and receives data.

  A basic input output system (BIOS) 121, an input / output (I / O) interface 122, and a controller 123 are connected to the LPC bus 120. The BIOS 121 is a group of programs that collect basic operation instructions of the personal computer 5 and is stored in, for example, a ROM (Read Only Memory). The BIOS 121 controls data exchange (input / output) between the OS or application program and the peripheral device.

  A serial terminal 124 and a parallel terminal 125 are connected to the I / O interface 122, and exchange data with devices connected to the respective terminals. The controller 123 is connected to a jog dial 158, a keyboard 157, a mouse 156, an AC power source 126, and the like.

  A PC card interface 128 and an IEEE1394 interface 129 are connected to the PCI bus 127. The PC card interface 128 supplies the data supplied from the device (card) connected to the slot 131 to the CPU 101 or the RAM 104 and outputs the data supplied from the CPU 101 to the card connected to the PC card slot. . The drive 159 is connected to the PCI bus 127 via the slot 131 and the PC card interface 128.

  The drive 159 reads data recorded in the magnetic disk 171, the optical disk 172, the magneto-optical disk 173, or the semiconductor memory 174 that is loaded, and supplies the read data to the RAM 104. Further, data generated by the processing of the CPU 101 can be stored in the magnetic disk 171, the optical disk 172, the magneto-optical disk 173, or the semiconductor memory 174 that is mounted on the drive 159.

  The IEEE1394 interface 129 transmits and receives data conforming to the IEEE1394 standard (data stored in a packet) via the IEEE1394 port 130.

  FIG. 5 is a block diagram illustrating a detailed configuration example of the reader / writer 8.

  The control unit 201 includes a CPU 211, a ROM 212, a RAM 213, an SCC (Serial Communication Controller) 214, an SPU (Signal Processing Unit) 216, and a bus 215 that interconnects these CPUs 211 to SPU 216. The control unit 201 is composed of one IC (Integrated Circuit).

  The CPU 211 expands the control program stored in the ROM 212 to the RAM 213, and, for example, based on response data transmitted from the non-contact IC card 3 and control signals supplied from the CPU 101 in FIG. Execute the process. For example, the CPU 211 generates a command to be transmitted to the non-contact IC card 3 and outputs it to the SPU 216 via the bus 215 or performs an authentication process for data transmitted from the non-contact IC card 3. To do.

  The SCC 214 supplies the data supplied from the CPU 101 in FIG. 4 to the CPU 211 via the bus 215, and outputs the data supplied from the CPU 211 via the bus 215 to the CPU 101.

  When the response data from the contactless IC card 3 is supplied from the demodulator 204, the SPU 216 performs, for example, BPSK demodulation (Manchester code decoding) on the data and supplies the acquired data to the CPU 211. To do. In addition, when a command to be transmitted to the contactless IC card 3 is supplied via the bus 215, the SPU 216 performs BPSK (Binary Phase Shift Keying) modulation (coding to Manchester code) on the command, and acquires the acquired data. Is output to the modulation unit 202.

  The modulation unit 202 generates an ASK (Amplitude Shift Keying) modulated carrier wave having a predetermined frequency (for example, 13.56 MHz) supplied from the oscillation circuit (OSC) 203 based on data supplied from the SPU 216. The modulated wave is output from the antenna 205 as an electromagnetic wave. On the other hand, the demodulation unit 204 demodulates the modulated wave (ASK modulated wave) acquired via the antenna 205 and outputs the demodulated data to the SPU 206.

  The antenna 205 radiates a predetermined electromagnetic wave, and detects whether or not the non-contact IC card 3 is approached based on a change in load with respect to the electromagnetic wave. For example, when the non-contact IC card 3 comes close, the antenna 205 transmits and receives various data to and from the non-contact IC card 146.

  FIG. 6 is a block diagram showing a detailed configuration example of the non-contact IC card 3.

  The non-contact IC card 3 includes, for example, an antenna (loop antenna) 230 and a capacitor 231 shown in the figure, and an IC in which other configurations are stored in one chip, and is provided in the personal computer 5 using electromagnetic induction. The reader / writer 8 and the like are half-duplexly communicated with various data, and are not necessarily configured as a card. The IC card is a name used for convenience of explanation, and intends a function as described above or described later. For example, there is a Felica chip (registered trademark) as a device that provides basically the same function as the non-contact IC card 3.

  The CPU 221 expands the control program stored in the ROM 222 in the RAM 223 and controls the overall operation of the non-contact IC card 3. For example, when the electromagnetic wave radiated from the reader / writer 8 or the like provided in the personal computer 5 is received by the antenna 230, the CPU 221 applies to the non-contact IC card 3 in response to a request from the reader / writer 8. The stored card key 33 or right management information 34 is supplied to the reader / writer 8.

  The LC circuit constituted by the antenna 230 and the capacitor 231 resonates with an electromagnetic wave having a predetermined frequency radiated from the reader / writer 8 provided in the personal computer 5 disposed in the vicinity. In the ASK demodulator 243, the interface unit 229 demodulates the modulated wave (ASK modulated wave) received via the antenna 230 by detecting the envelope and demodulates the demodulated data to the BPSK (Binary Phase Shift Keying) demodulator 232. Output.

  The interface unit 229 rectifies the AC magnetic field excited in the antenna 230 by the ASK demodulator 243, stabilizes it in the voltage regulator 241, and supplies each unit as a DC power source. The power of the electromagnetic wave radiated from the reader / writer 8 or the like is adjusted so as to generate a magnetic field that covers the power necessary for the non-contact IC card 3 as described later.

  The oscillation circuit 244 of the interface unit 229 includes a PLL (Phase Locked Loop) circuit, and generates a clock signal having the same frequency as the clock frequency of the received signal.

  Further, when the interface unit 229 transmits a request for data or the like to the reader / writer 8 or the like provided in the personal computer 5, for example, in response to the data supplied from the BPSK modulation unit 228, for example, a predetermined switching element (Not shown) is turned on / off, and the load of the antenna 230 is varied by connecting a predetermined load in parallel to the antenna 230 only when the switching element is in the on state.

  The ASK modulation unit 242 performs ASK modulation on the BPSK modulated wave supplied from the BPSK modulation unit 228 according to the load variation of the antenna 230, and transmits the modulation component to the reader / writer 8 via the antenna 230 (reader / writer 8). (Variable terminal voltage of the antenna) (load switching method).

  When the data demodulated by the ASK demodulator 243 is BPSK modulated, the BPSK demodulator 232 demodulates the data (decodes Manchester code) based on a clock signal supplied from a PLL circuit (not shown). The demodulated data is output to the data receiving unit 233. The data receiving unit 233 appropriately outputs the supplied data to the CPU 221. The CPU 221 stores this data in the RAM 223 or the EEPROM 224.

  The data stored in the EEPROM 224 is read by the CPU 221 and supplied to the data transmission unit 227. The BPSK modulation unit 228 performs BPSK modulation (coding into Manchester code) on the data supplied from the data transmission unit 227, and outputs it to the ASK modulation unit 242.

  The EEPROM 224 stores a card key 33 and right management information 34.

  There are three types of recording and playback modes of the audio data 31 in the personal computer 5. The first recording and reproduction mode is an IC card confirmation mode. In the IC card confirmation mode, the non-contact IC card 3 (the card key 33) is required when the audio data 31 is reproduced. That is, reproduction of the audio data 31 is permitted only when the non-contact IC card 3 is brought close to the reader / writer 8. In other words, in the IC card confirmation mode, reproduction of the audio data 31 is not permitted for a user who does not have the non-contact IC card 3.

  The second recording and playback mode is a hardware confirmation mode. In the hardware confirmation mode, the audio data 31 can be reproduced only by the personal computer 5 in which the audio data 31 is recorded. When the audio data 31 recorded by the personal computer 5 is moved to another device, the audio data 31 cannot be reproduced.

  The third recording and reproduction mode is a reproduction period management mode. In the reproduction period management mode, the audio data 31 can be reproduced without requiring the non-contact IC card 3 (the card key 33) within the period (or the number of times) described in the right management information 34. However, when the period described in the right management information 34 has passed (when the number of times has been exceeded), the non-contact IC card 3 (the card key 33) is required to reproduce the audio data 31.

  When the audio data 31 recorded in the reproduction period management mode is moved to another device of the user who does not have the non-contact IC card 3, a certain period (for example, one week) or a predetermined number of times (for example, ten times) Only when the audio data 31 is reproduced, the audio data 31 cannot be reproduced after the period has elapsed or when the number of times of reproduction exceeds a predetermined number.

  In other words, when the voice data 31 recorded in the playback period management mode is obtained via a network or a recording medium, the user who has obtained the voice data 31 and does not have the non-contact IC card 3 is allowed to use the permitted period. Alternatively, the audio data 31 can be reproduced as many times as permitted. This period or number of times is controlled by the right management information 34, and the provider who sells the CD 1 can freely set the period or number of times by changing the right management information 34 when storing it in the non-contact IC card 3. it can.

  The provider who sells the CD 1 can store the right management information 34 suitable for sales promotion of the CD 1 in the non-contact IC card 3.

  The provider who sells the CD 1 can arbitrarily change whether or not the mode can be selected in the personal computer 5 (recording / reproducing program 11) by the configuration of the recording / reproducing program 11 itself or by the description of the right management information 34. For example, the provider who sells the CD 1 can cause the user to select either the IC card confirmation mode or the reproduction period management mode. The mode may be selected for each audio data 31 or may be selected as the mode of the recording / reproducing program 11.

  The process of recording the audio data 31 in the IC card confirmation mode will be described with reference to the flowchart of FIG. In step S <b> 1001, the CPU 101 that executes the recording / playback program 11 acquires a save instruction by acquiring a signal corresponding to the user's operation from the mouse 156, the keyboard 157, or the jog dial 158. In step S1002, the recording / reproducing program 11 reads the CD key 32 and the audio data 31 from the CD 1 loaded in the CD-ROM drive 118.

  In step S1003, the recording / reproducing program 11 requests the card key 33 from the non-contact IC card 3 via the reader / writer 8. That is, the recording / reproducing program 11 causes the reader / writer 8 to transmit a request for the card key 33 to the non-contact IC card 3.

  In step S2001, the non-contact IC card 3 receives the request for the card key 33 transmitted from the reader / writer 8 connected to the personal computer 5. In step S2002, the non-contact IC card 3 reads the card key 33 stored in the EEPROM 224. In step S2003, the non-contact IC card 3 transmits the read card key 33 to the reader / writer 8.

  In step S1004, the recording / reproducing program 11 causes the reader / writer 8 to receive the card key 33 transmitted from the non-contact IC card 3, and obtains the card key 33. In step S1005, the recording / reproducing program 11 calculates a hash value of the CD key 32 by applying a hash function to the CD key 32.

  Since only the recording / reproducing program 11 knows the hash function applied to the CD key 32, other devices or other programs can also know the hash value of the CD key 32 obtained in the process of step S1005. I can't.

  In step S1006, the recording / reproducing program 11 determines whether or not the correspondence between the CD key 32 and the card key 33 is correct. For example, the recording / reproducing program 11 determines that the correspondence between the CD key 32 and the card key 33 is correct when the hash value of the CD key 32 matches the card key 33. If it is determined in step S1006 that the correspondence between the CD key 32 and the card key 33 is correct, the process advances to step S1007, and the recording / playback program 11 responds to the user's operation on the mouse 156, keyboard 157, or jog dial 158. Get the mode specification. The mode designation designates one of an IC card confirmation mode, a hardware confirmation mode, and a reproduction period management mode. In this case, the IC card confirmation mode is designated.

  In step S1008, the recording / reproducing program 11 encrypts the audio data 31 with the card key 33. In this case, a common key method such as DES (Data Encryption Standard) or IDEA (International Data Encription Algorithm) can be used as the encryption method.

  In step S <b> 1009, the recording / reproducing program 11 records the encrypted audio data 31 and the CD key 32 on the HDD 117. In this case, as shown in FIG. 8, the recording / reproducing program 11 divides the CD key 32 into, for example, five parts 301-1 to 301-5 and the parts 301-1 to 301 of each CD key 32. -5 is embedded in a predetermined position of the audio data 31. The recording / reproducing program 11 records the audio data 31 in which the portions 301-1 to 301-5 of the CD key 32 are embedded in the HDD 117.

  Note that the number of divisions of the CD key 32 can be arbitrary. Further, the size of the divided portion can be set arbitrarily. Further, the recording / reproducing program 11 can embed each of the portions 301-1 to 301-5 of the CD key 32 at an arbitrary position of the audio data 31.

  For example, when the CD key 32 is 128 bits, the recording / reproducing program 11 uses the CD key 32 as the portion 251-1 of the CD key 32, the first 25 bits of the CD key 32, and the portion 301-2 of the CD key 32 as the CD key 32. The next 15 bits of the CD key 32 as the part 301-3 of the CD key 32, the next 35 bits of the CD key 32, and the part of the CD key 32 301-4 as the further 25 bits of the CD key 32, As the part 301-5, the last 28 bits of the CD key 32 are extracted from the CD key 32 to generate parts 301-1 to 301-5 of the CD key 32.

  Then, for example, the recording / reproducing program 11 inserts the portion 301-1 of the CD key 32 into the 200K byte of the audio data 31, and inserts the portion 301-2 of the CD key 32 into the 300K byte of the audio data 31. Then, the portion 301-3 of the CD key 32 is inserted into the 500K byte of the audio data 31, the portion 301-4 of the CD key 32 is inserted into the 550K byte of the audio data 31, and the portion 301 of the CD key 32 is inserted. The portion 301-1 to 301-5 of the CD key 32 is embedded in the audio data 31 by inserting -5 into the 900K byte of the audio data 31.

  Since only the recording / reproducing program 11 knows the position and size of the portion 301-1 to 301-5 of the CD key 32 embedded in the audio data 31, only the recording / reproducing program 11 reproduces the audio data 31. can do.

  When the audio data 31 is embedded in the portions 301-1 to 301-5 of the CD key 32, data for adjusting the data size may be added to the portions 301-1 to 301-5.

  Thus, the recording / reproducing program 11 records the audio data 31 in which the portions 301-1 to 301-5 of the CD key 32 are embedded in the HDD 117.

  Returning to FIG. 7, in step S <b> 1010, the recording / reproducing program 11 notifies the user of the end of the work such as displaying an image indicating the end of the work on the LCD 151, and the process ends.

  If it is determined in step S1006 that the correspondence between the CD key 32 and the card key 33 is not correct, recording of the audio data 31 cannot be permitted, and the process proceeds to step S1011. The recording / reproducing program 11 is stored in the LCD 151. The process ends without recording the audio data 31 by notifying the user that the audio data 31 is not stored, such as by displaying an image indicating that the audio data is not stored.

  Thus, the personal computer 5 can record the audio data 31 on the HDD 117 only when the user has the non-contact IC card 3 corresponding to the CD 1. The audio data 31 is recorded in the HDD 117 so that it can be reproduced only in the reproduction process described below.

  The process of reproducing the audio data 31 in the IC card confirmation mode will be described with reference to the flowchart of FIG. In step S1021, the CPU 101 that executes the recording / playback program 11 acquires a playback instruction based on signals from the mouse 156, keyboard 157, or jog dial 158 corresponding to the user's operation.

  In step S <b> 1022, the recording / reproducing program 11 requests the card key 33 from the non-contact IC card 3 via the reader / writer 8. That is, the recording / reproducing program 11 causes the reader / writer 8 to send a request for the card key 33 to the non-contact IC card 3.

  In step S2021, the non-contact IC card 3 receives the request for the card key 33 transmitted from the reader / writer 8 connected to the personal computer 5. In step S2022, the non-contact IC card 3 reads the card key 33 stored in the EEPROM 224. In step S <b> 2023, the non-contact IC card 3 transmits the read card key 33 to the reader / writer 8.

  In step S1023, the recording / reproducing program 11 causes the reader / writer 8 to receive the card key 33 transmitted from the non-contact IC card 3, and obtains the card key 33. In step S1024, the recording / reproducing program 11 reads the CD key 32. That is, the recording / reproducing program 11 reads the audio data 31 in which the CD key 32 is embedded, reads the CD key 32 portion from the position embedded in the audio data 31, and combines the CD key 32 portion. The CD key 32 is read out.

  In step S1025, the recording / reproducing program 11 calculates the hash value of the CD key 32 by applying the same hash function as that in step S1005 to the CD key 32.

  In step S1026, the recording / reproducing program 11 determines whether or not the correspondence between the CD key 32 and the card key 33 is correct. For example, the recording / reproducing program 11 determines that the correspondence between the CD key 32 and the card key 33 is correct when the hash value of the CD key 32 matches the card key 33. If it is determined in step S1026 that the correspondence between the CD key 32 and the card key 33 is correct, the process advances to step S1027, and the recording / reproducing program 11 reads the audio data 31 from the HDD 117. At this time, the CD key 32 is removed from the audio data 31.

  In step S1028, the recording / reproducing program 11 decrypts the audio data 31 with the card key 33 acquired in the process of step S1023. In step S1029, the recording / reproducing program 11 causes the sound controller 113 to reproduce sound based on the decoded sound data 31.

  In step S1030, the recording / reproducing program 11 notifies the user of the end of work, such as displaying an image indicating the end of work on the LCD 151, and the process ends.

  If it is determined in step S1026 that the correspondence between the CD key 32 and the card key 33 is not correct, reproduction of the audio data 31 cannot be permitted, and thus the process proceeds to step S1031, and the recording / reproduction program 11 reproduces on the LCD 151. The process is terminated without reproducing the audio data 31 by notifying the user that the audio data 31 is not reproduced, such as by displaying an image indicating that the audio data is not reproduced.

  Thus, the personal computer 5 reproduces the audio data 31 only when the non-contact IC card 3 is held over the reader / writer 8. Accordingly, only the user who has the non-contact IC card 3 can cause the personal computer 5 to reproduce the audio data 31.

  In the IC card confirmation mode, the audio data 31 recorded from the CD 1 corresponding to the non-contact IC card 3 can be reproduced simply by bringing the non-contact IC card 3 close to the reader / writer 8. The process of reproducing the audio data 31 in the IC card confirmation mode in this case will be described with reference to the flowchart of FIG.

  When the processing described with reference to the flowchart of FIG. 10 is started, the personal computer 5 executes processing for detecting the proximity of the non-contact IC card 3, and when the proximity of the non-contact IC card 3 is detected, recording and reproduction are performed in step S1041. The program 11 requests the card key 33 from the non-contact IC card 3 via the reader / writer 8.

  Since the processes of steps S2041 to S2043 and step S1042 are the same as the processes of steps S2021 to S2023 and step S1023 of FIG. 9, description thereof will be omitted.

  In step S1043, the recording / reproducing program 11 searches the audio data 31 recorded together with the CD key 32 whose hash value of the CD key 32 matches the card key 33.

  That is, the recording / reproducing program 11 reads the CD key 32 and calculates a hash value by applying a hash function to the read CD key 32. Then, the recording / reproducing program 11 determines whether or not the hash value matches the card key 33. If it is determined that the hash value of the CD key 32 does not match the card key 33, the recording / reproducing program 11 reads the next CD key 32 and repeats the above-described processing.

  On the other hand, if it is determined that the hash value of the CD key 32 matches the card key 33, the recording / reproducing program 11 searches the audio data 31 recorded together with the CD key 32 from which a hash value matching the card key 33 is obtained. The voice data 31 to be specified is specified.

  As described above, the recording / reproducing program 11 searches the audio data 31 requested to be reproduced by bringing the non-contact IC card 3 close by the user based on the card key 33.

  In step S1044, the recording / reproducing program 11 determines whether or not the audio data 31 requested to be reproduced is retrieved in the process of step S1043. If it is determined that the audio data 31 is retrieved, the process proceeds to step S1045. The recording / reproducing program 11 reads the audio data 31 retrieved in the process of step S1043 from the HDD 117.

  Since the processes in steps S1046 to S1049 are the same as the processes in steps S1028 to S1031 in FIG. 9, description thereof will be omitted.

  As described above, when the user holds the contactless IC card 3 over the reader / writer 8, the personal computer 5 reproduces the audio data 31 corresponding to the contactless IC card 3. Accordingly, the desired audio data 31 can be reproduced without a troublesome operation such as the user himself / herself searching the audio data 31 from an enormous number of files. In particular, when the audio data 31 is reproduced by a device that does not have an input device such as a keyboard or a touch panel, or when a user unfamiliar with the operation of the device attempts to reproduce the audio data 31, The voice data 31 can be easily reproduced by an intuitive operation of bringing the non-contact IC card 3 corresponding to the data 31 close to the reader / writer 8 or the main body incorporating the reader / writer 8.

  Since an image related to the audio data 31 is printed on the non-contact IC card 3, the user can use the non-contact IC card 3 corresponding to the audio data 31 to be reproduced based on the printed image. Can be selected visually. When the user brings the selected non-contact IC card 3 close to the reader / writer 8, the personal computer 5 reproduces the audio data 31 that the user desires to reproduce.

  In this way, the user can select the non-contact IC card 3 from the printed image without operating the personal computer 5 itself, and hold it over the personal computer 5 with an intuitive operation. 5, the desired audio data 31 can be reproduced.

  Next, recording processing of the audio data 31 in the hardware confirmation mode will be described with reference to the flowchart of FIG. Since the processing from step S1051 to step S1056 and the processing from step S2051 to step S2053 are the same as the processing from step S1001 to step S1006 and the processing from step S2001 to step S2003 in FIG. 7, description thereof will be omitted.

  If it is determined in step S1056 that the correspondence between the CD key 32 and the card key 33 is correct, the process proceeds to step S1057, and the recording / playback program 11 responds to the user's operation on the mouse 156, keyboard 157, or jog dial 158. The mode designation is acquired by a signal from the mouse 156, the keyboard 157, or the jog dial 158. In this case, the hardware confirmation mode is designated.

  In step S <b> 1058, the recording / reproducing program 11 generates a hardware specific key from the CD key 32 and the private key of the personal computer 5. The private key is information unique to the personal computer 5 generated by the operating system installed in the personal computer 5. For example, the private key is generated from the ID (Identifier) of the CPU 101 and the ID of the recording medium on which the operating system before installation is recorded.

  The private key may be generated from an ID of other hardware constituting the personal computer 5 (for example, a MAC address (Media Access Control Address) of the LAN interface 108F), or an ID of a hardware such as the CPU 101. It may be itself. Further, the recording / reproducing program 11 may generate a private key.

  For example, the recording / reproducing program 11 generates a hardware specific key by combining the CD key 32 and the private key of the personal computer 5. Further, for example, the recording / reproducing program 11 combines part or all of the CD key 32 and part or all of the private key, or shuffles part or all of the CD key 32 and part or all of the private key. Thus, a hardware specific key is generated.

  In step S1059, the recording / reproducing program 11 encrypts the audio data 31 with the hardware specific key. In step S <b> 1060, the recording / reproducing program 11 records the encrypted audio data 31 and the CD key 32 on the HDD 117. In this case, as in the case of step S1009, the recording / reproducing program 11 embeds the CD key 32 in the audio data 31, and records the audio data 31 in which the CD key 32 is embedded in the HDD 117.

  In step S <b> 1061, the recording / reproducing program 11 notifies the user of the end of work, such as displaying an image indicating the end of work on the LCD 151, and the process ends.

  If it is determined in step S1056 that the correspondence between the CD key 32 and the card key 33 is not correct, the audio data 31 cannot be recorded. The process advances to step S1062, and the recording / playback program 11 does not save the data in the LCD 151. The process ends without recording the audio data 31 by notifying the user that the audio data 31 is not stored, such as by displaying an image to be displayed.

  In this way, the audio data 31 encrypted with the key generated based on the unique value of the personal computer 5 is recorded. Since the hardware specific key is generated from the CD key 32 and the private key, even if one of the CD key 32 and the private key is known, the audio data 31 cannot be decrypted, or the CD key 32 and Even if both of the private keys are known, the audio data 31 cannot be decrypted unless the hardware specific key generation method is known.

  Therefore, even if the audio data 31 recorded in the hardware confirmation mode is moved to another device, it cannot be reproduced by the destination device.

  The audio data 31 recorded in the hardware confirmation mode can be reproduced only by the next reproduction process.

  The process of reproducing the audio data 31 in the hardware confirmation mode will be described with reference to the flowchart of FIG. In step S1071, the CPU 101 that executes the recording / playback program 11 performs playback based on a signal from the mouse 156, keyboard 157, or jog dial 158 corresponding to a user operation on the mouse 156, keyboard 157, or jog dial 158. Get the instructions.

  In step S1072, the recording / reproducing program 11 reads the CD key 31. That is, the recording / reproducing program 11 reads the audio data 31 in which the CD key 32 is embedded, reads the CD key 32 portion from the position where the audio data 31 is embedded, and combines the CD key 32 portion. The CD key 32 is read out.

  In step S1073, the recording / reproducing program 11 generates a hardware specific key from the CD key 32 and the private key of the personal computer 5 by the same process as the process in step S1058. In step S 1074, the recording / reproducing program 11 reads the audio data 31 from the HDD 117. At this time, the CD key 32 is removed from the audio data 31.

  In step S1075, the recording / reproducing program 11 decrypts the audio data 31 with the hardware specific key generated in the process of step S1073. If all of the generation methods of the CD key 32, the private key, and the hardware specific key are correct, the audio data 31 is correctly decrypted, and any of the generation method of the CD key 32, the private key, and the hardware specific key is correct. If not, the audio data 31 is not correctly decoded. That is, only the recording / playback program 11 executed by the personal computer 5 that recorded the audio data 31 can correctly decode the audio data 31.

  In step S1076, the recording / reproducing program 11 causes the sound controller 113 to reproduce sound based on the decoded sound data 31.

  In step S1077, the recording / reproducing program 11 notifies the user of the end of work, such as displaying an image indicating the end of work on the LCD 151, and the process ends.

  In this way, the audio data 31 recorded in the hardware confirmation mode is reproduced only by the personal computer 5 that recorded the data.

  Next, recording processing of the audio data 31 in the reproduction period management mode will be described with reference to the flowchart of FIG. Since the processes in steps S1081 and S1082 are the same as the processes in steps S1001 and S1002 in FIG. 7, description thereof will be omitted.

  In step S1083, the recording / reproducing program 11 requests the card key 33 and the right management information 34 from the contactless IC card 3 via the reader / writer 8. That is, the recording / reproducing program 11 causes the reader / writer 8 to transmit a request for the card key 33 and the right management information 34 to the non-contact IC card 3.

  In step S <b> 2081, the non-contact IC card 3 receives the request for the card key 33 and the rights management information 34 transmitted from the reader / writer 8 connected to the personal computer 5. In step S2082, the non-contact IC card 3 reads the card key 33 and right management information 34 stored in the EEPROM 224. In step S 2083, the non-contact IC card 3 transmits the read card key 33 and right management information 34 to the reader / writer 8.

  In step S1084, the recording / reproducing program 11 causes the reader / writer 8 to receive the card key 33 and the right management information 34 transmitted from the non-contact IC card 3, and obtains the card key 33 and the right management information 34. In step S1085, the recording / reproducing program 11 calculates a hash value of the CD key 32 by applying a hash function to the CD key 32.

  In step S1086, the recording / reproducing program 11 determines whether or not the correspondence between the CD key 32 and the card key 33 is correct by the same processing as that in step S1006. If it is determined in step S1086 that the correspondence between the CD key 32 and the card key 33 is correct, the process advances to step S1087, and the recording / playback program 11 displays an image indicating that the playback period management mode can be selected on the LCD 151. By displaying it, the user is notified that the playback period management mode can be selected.

  In step S1088, the recording / reproducing program 11 acquires a mode designation based on signals from the mouse 156, keyboard 157, or jog dial 158 corresponding to the user's operation. In this case, the playback period management mode is designated.

  In step S1089, the recording / reproducing program 11 encrypts the audio data 31 with the CD key 32. In this case, a common key method such as DES or IDEA can be used as the encryption method.

  In step S1090, the recording / reproducing program 11 records the encrypted audio data 31, the CD key 32, and the right management information 34 in the HDD 117. Similar to the case of the CD key 32 described with reference to FIG. 8, the recording / reproducing program 11 embeds the right management information 34 in a predetermined position of the audio data 31. The recording / reproducing program 11 records the audio data 31 in which the CD key 32 and the right management information 34 are embedded in the HDD 117.

  Of course, as in the case of the CD key 32, the method of dividing the right management information 34 can be arbitrary, and the position on the audio data 31 in which the portion of the right management information 34 is embedded is naturally an arbitrary position. can do.

  In step S1091, the recording / reproducing program 11 notifies the user of the end of work, such as displaying an image indicating the end of work on the LCD 151, and the process ends.

  If it is determined in step S1086 that the correspondence between the CD key 32 and the card key 33 is not correct, the audio data 31 cannot be recorded. Therefore, the process proceeds to step S1092, and an image indicating that the data is not stored is displayed on the LCD 151. Then, the user is notified that the audio data 31 is not stored, and the process ends without recording the audio data 31.

  Thus, in addition to the audio data 31 and the CD key 32, the rights management information 34 is recorded.

  The process of reproducing the audio data 31 in the reproduction period management mode will be described with reference to the flowchart of FIG. In step S1101, the CPU 101 that executes the recording / playback program 11 acquires a playback instruction based on a signal from the mouse 156, keyboard 157, or jog dial 158 corresponding to the user's operation. In step S1102, the recording / reproducing program 11 reads the right management information 34 corresponding to the audio data 31 to be reproduced. For example, the recording / reproducing program 11 reads out the audio data 31 to be reproduced, reads out the part of the rights management information 34 from the position embedded in the audio data 31, and combines the parts of the right management information 34. The right management information 34 is read.

  In step S1103, the recording / reproducing program 11 determines whether or not use of the audio data 31 is permitted based on the read right management information 34. That is, the right management information 34 describes the period during which the audio data 31 is permitted to be reproduced, the number of times reproduction is permitted, the number of times it has been reproduced, and the like. Use of audio data 31 by comparing the period during which reproduction of data 31 is permitted, the date obtained from a real time clock (not shown), or the number of times reproduction is permitted and the number of reproductions so far Whether or not is permitted.

  If it is determined that the use of the audio data 31 is permitted, the process advances to step S1104, and the recording / reproducing program 11 reads the audio data 31 and the CD key 32 from the HDD 117. More specifically, the recording / reproducing program 11 reads the audio data 31 in which the CD key 32 and the rights management information 34 are embedded from the HDD 117, and reads the portion of the CD key 32 and the rights management information 34 from the read audio data 31. The part is extracted, and the CD key 32 and the rights management information 34 are removed from the audio data 31. Thereby, the recording / reproducing program 11 obtains the audio data 31 in which the part of the CD key 32 and the part of the right management information 34 are not embedded. Then, the recording / reproducing program 11 reads the CD key 32 by combining the extracted CD key 32 portions.

  In step S 1105, the recording / reproducing program 11 decrypts the audio data 31 with the CD key 32. In step S1106, the recording / reproducing program 11 causes the sound controller 113 to reproduce sound based on the decoded sound data 31.

  In step S1107, since the audio data 31 has been reproduced, the recording / reproduction program 11 updates the right management information 34 for the data indicating the number of reproductions of the audio data 31. That is, for example, data indicating the number of times of reproduction described in the right management information 34 is incremented.

  In step S1108, the recording / reproducing program 11 records the encrypted audio data 31, the CD key 32, and the updated right management information 34 in the HDD 117 by the same processing as the processing in step S1090. In step S1109, the recording / reproducing program 11 notifies the user of the end of the work, such as displaying an image indicating the end of the work on the LCD 151, and the process ends.

  If it is determined in step S1103 that the use of the audio data 31 is not permitted, the process proceeds to step S1110, and the recording / playback program 11 stores the card key 33 and rights management in the contactless IC card 3 via the reader / writer 8. Request information 34. Since the processes of steps S2101 to S2103 and step S1111 are the same as the processes of steps S2081 to S2083 and step S1084 in FIG. 13, description thereof will be omitted.

  In step S <b> 1112, the recording / reproducing program 11 reads the CD key 32 from the HDD 117. That is, the recording / reproducing program 11 reads the audio data 31 in which the CD key 32 is embedded from the HDD 117, reads the portion of the CD key 32 from the position embedded in the audio data 31, and combines the portions of the CD key 32. As a result, the CD key 32 is read out.

  In step S1113, the recording / reproducing program 11 calculates the hash value of the CD key 32 by applying the same hash function to the CD key 32 as in step S1085.

  In step S1114, the recording / reproducing program 11 determines whether or not the correspondence between the CD key 32 and the card key 33 is correct. For example, the recording / reproducing program 11 determines that the correspondence between the CD key 32 and the card key 33 is correct when the hash value of the CD key 32 matches the card key 33. If it is determined in step S1114 that the correspondence between the CD key 32 and the card key 33 is correct, the process advances to step S1115, and the recording / reproducing program 11 reads the audio data 31 from the HDD 117. At this time, the CD key 32 and the right management information 34 are removed from the audio data 31.

  In step S 1116, the recording / reproducing program 11 decrypts the audio data 31 with the CD key 32. In step S <b> 1117, the recording / playback program 11 causes the sound controller 113 to play back sound based on the decoded sound data 31.

  In step S1118, the recording / reproducing program 11 updates the right management information 34 based on the right management information 34 received in the process of step S1111. For example, the recording / reproducing program 11 overwrites the rights management information 34 received in the process of step S1111 with the rights management information 34 read in the process of step S1102, and also reproduces the contents described in the right management information 34. The right management information 34 is updated by setting the data indicating the number of times to one. Alternatively, the recording / reproducing program 11 may simply update the right management information 34 by setting the data indicating the number of reproductions described in the right management information 34 to one time.

  In this way, once the contactless IC card 3 is brought close to the reader / writer 8 in the playback period management mode, the contactless IC card is allowed for the period or the number of playbacks permitted by the right management information 34. Thus, the audio data 31 can be reproduced without the need to bring 3 close to the reader / writer 8.

  In step S 1119, the recording / reproducing program 11 records the encrypted audio data 31, CD key 32, and right management information 34 in the HDD 117 by the same processing as that in step S 1090.

  In step S1120, the recording / reproducing program 11 notifies the user of the end of the work, such as displaying an image indicating the end of the work on the LCD 151, and the process ends.

  If it is determined in step S1114 that the correspondence between the CD key 32 and the card key 33 is not correct, the reproduction of the audio data 31 cannot be permitted, so the process proceeds to step S1121, and the recording / reproduction program 11 reproduces the data on the LCD 151. The process is terminated without reproducing the audio data 31 by notifying the user that the audio data 31 is not reproduced, such as by displaying an image indicating that the audio data is not reproduced.

  As described above, in the reproduction in the reproduction period management mode, the timing required to bring the non-contact IC card 3 close to the reader / writer 8 depends on the number of times of use or the period of use according to the description of the right management information 34. The provider can arbitrarily decide. Further, it is not necessary to bring the non-contact IC card 3 close to the reader / writer 8 during a period in which use is permitted by the right management information 34.

  Next, the processes of the non-contact IC card 3 that executes the control program and the personal computer 5 that executes the recording / reproducing program 11 will be described.

  With reference to the flowchart of FIG. 15, the data transmission process of the non-contact IC card 3 that executes the control program will be described. In step S11, when the electromagnetic wave radiated from the reader / writer 8 is received by the antenna 230, the DC power is supplied from the voltage regulator 241 to each part, so that the control program performs hardware initialization (reset at start-up). Execute the process.

  In step S <b> 12, the control program causes the data reception unit 233 to receive a command transmitted from the reader / writer 8. In this case, the command transmitted from the reader / writer 8 is a request for the card key 33 or a request for the card key 33 and the right management information 34.

  In step S13, the control program determines whether or not a command has been acquired. If it is determined that a command has not been acquired, the control program returns to step S12 and repeats command reception processing until the command is acquired. .

  If it is determined in step S13 that a command has been acquired, the process proceeds to step S14, and the control program determines whether the acquired command is a data (transmission) request, that is, a READ command. If it is determined that the acquired command is not a READ command, data transmission is not requested, so the process returns to step S12 and the above-described processing is repeated from the processing for receiving the command.

  If it is determined in step S14 that the acquired command is a READ command, the process proceeds to step S15, and the control program reads data at the address given in the command from the EEPROM 224. For example, since the command for requesting the card key 33 includes the address of the EEPROM 224 in which the card key 33 is stored, when the command for requesting the card key 33 is received, the control program reads the card key from the EEPROM 224. 33 is read out. Further, for example, the command for requesting the card key 33 and the right management information 34 includes the address of the EEPROM 224 in which the card key 33 is stored and the address of the EEPROM 224 in which the right management information 34 is stored. When receiving the request command for the card key 33 and the rights management information 34, the control program reads the card key 33 from the EEPROM 224 and further reads the rights management information 34 from the EEPROM 224.

  In step S16, the control program causes the data transmitter 227 to transmit the data at the given address, that is, the data read in the process of step S15, to the reader / writer 8, and the process ends. For example, when the card key 33 is read out in the process of step S15, the control program causes the data transmission unit 227 to transmit the card key 33 to the reader / writer 8. Further, for example, when the card key 33 and the rights management information 34 are read in the process of step S15, the control program causes the data transmission unit 227 to transmit the card key 33 and the rights management information 34 to the reader / writer 8. .

  Since the contactless IC card 3 itself does not know the address at which the card key 33 or the right management information 34 is stored in the contactless IC card 3, only the recording / playback program 11 knows the program, Alternatively, a device that does not execute the recording / reproducing program 11 cannot acquire the card key 33 or the right management information 34.

  As described above, the non-contact IC card 3 can transmit the card key 33 or the right management information 34 to the reader / writer 8 in response to a request from the reader / writer 8.

  Next, with reference to the flowcharts of FIGS. 16 to 19, the audio data storing or reproducing process of the personal computer 5 that executes the recording / reproducing program 11 will be described. In step S21, the recording / reproducing program 11 determines whether or not the user's request has been acquired based on a signal from the mouse 156, the keyboard 157, or the jog dial 158 corresponding to the user's operation. If it is determined that the request has not been acquired, the determination processing in step S21 is repeated until the user request is acquired.

  If it is determined in step S21 that the user's request has been acquired, the process proceeds to step S22, and the recording / reproducing program 11 determines whether the acquired user's request is a storage request, and the user If it is determined that the request is a storage request, the process proceeds to step S23, and the CD key 32 and the audio data 31 are read from the CD 1 loaded in the CD-ROM drive 118.

  In step S 24, the recording / reproducing program 11 requests the card key 33 and the right management information 34 from the non-contact IC card 3 via the reader / writer 8. In response to this request, the non-contact IC card 3 transmits the card key 33 and the right management information 34. Therefore, in step S25, the recording / reproducing program 11 sends the card key 33 and the right management information to the reader / writer 8. 34 is received. The recording / reproducing program 11 acquires the card key 33 and the right management information 34.

  When the non-contact IC card 3 stores only the card key 33 and does not store the right management information 34, the non-contact IC card 3 transmits only the card key 33 to the reader / writer 8. Obtains only the card key 33.

  In step S <b> 26, the recording / reproducing program 11 calculates a hash value of the CD key 32 by applying a hash function to the CD key 32. In step S27, the recording / reproducing program 11 determines whether or not the correspondence between the CD key 32 and the card key 33 is correct. If it is determined in step S27 that the correspondence between the CD key 32 and the card key 33 is correct, the process proceeds to step S28, and the recording / playback program 11 is based on the description of the right management information 34 received in the process of step S25. Then, it is determined whether or not the reproduction period management mode can be selected.

  In the right management information 34, for example, whether or not the reproduction period management mode can be selected can be described by a flag or the like, and a period during which reproduction is permitted without referring to the card key 33. Alternatively, when the number of times reproduction is permitted is described, the recording / reproducing program 11 may determine that the reproduction period management mode can be selected.

  If the right management information 34 is not received in the process of step S25, it is determined in step S28 that the playback period management mode cannot be selected.

  If it is determined in step S28 that the reproduction period management mode can be selected, the process proceeds to step S29, where an image indicating that the reproduction period management mode can be selected is displayed on the LCD 151, etc. Is notified that the playback period management mode can be selected, and the process proceeds to step S30. If it is determined in step S28 that the playback period management mode cannot be selected, the process of step S29 is skipped, and the procedure proceeds to step S30.

  In step S30, the recording / reproducing program 11 waits for a mode designation waiting for input of a signal from the mouse 156, the keyboard 157, the jog dial 158, or the like. When a signal is sent from the mouse 156, the keyboard 157, the jog dial 158, or the like, in step S31, the recording / reproducing program 11 determines the IC card confirmation mode, the hardware confirmation mode, and the reproduction period management mode based on this signal. Gets the mode specification that specifies one of

  In step S32, the recording / reproducing program 11 determines whether or not the IC card confirmation mode is selected. If it is determined that the IC card confirmation mode is selected, the process proceeds to step S33, and the audio data 31 is stored with the card key 33. In step S34, the encrypted audio data 31 and the CD key 32 are recorded and stored in the HDD 117.

  If it is determined in step S32 that the IC card confirmation mode is not selected, the processes in steps S33 and S34 are skipped, and the procedure proceeds to step S35. In step S35, the recording / reproducing program 11 determines whether or not the hardware confirmation mode is selected. If it is determined that the hardware confirmation mode is selected, the process proceeds to step S36, and the CD key 32 and the personal computer 5 are checked. A hardware specific key is generated from the private key, the audio data 31 is encrypted with the generated hardware specific key in step S37, and the encrypted audio data 31 and CD key 32 are recorded in the HDD 117 in step S38. And save.

  If it is determined in step S35 that the hardware confirmation mode is not selected, the processing in steps S36 to S38 is skipped, and the procedure proceeds to step S39. In step S39, the recording / reproducing program 11 determines whether or not the reproduction period management mode has been selected. If it is determined that the reproduction period management mode has been selected, the process proceeds to step S40 and the audio data 31 is stored with the CD key 32. In step S41, the encrypted audio data 31, the CD key 32, and the right management information 34 are recorded and stored in the HDD 117.

  If it is determined in step S39 that the reproduction period management mode has not been selected, the processes in steps S40 and S41 are skipped, and the procedure proceeds to step S42.

  In step S42, the recording / reproducing program 11 notifies the user of the end of the work, such as displaying an image indicating the end of the work on the LCD 151, returns to step 21, and repeats the above-described processing.

  As described above, according to the designation of the mode, any one of the processing of Step S33 and Step S34, the processing of Step S36 to Step S38, or the processing of Step S40 and Step S41 is executed. That is, the audio data 31 is encrypted with a key corresponding to the designated mode (either the CD key 32, the card key 33, or the hardware specific key), and the audio data 31 and the CD key 31 that is a key necessary for reproduction are sounded. Data 31 is recorded and saved.

  If it is determined in step S27 that the correspondence between the CD key 32 and the card key 33 is not correct, the storage of the audio data 31 cannot be permitted, so the process proceeds to step S43, and the recording / playback program 11 is displayed on the LCD 151. A message indicating that the process is not executed is displayed, and the process returns to step S21 without recording the audio data 31, and the above-described process is repeated.

  On the other hand, if it is determined in step S22 that the request is not for saving, that is, playback is requested, the procedure proceeds to step S44, and the recording / playback program 11 determines whether or not the IC card confirmation mode is selected. Determine. When the mode can be selected for each audio data 31, for example, in step S44, the recording / reproducing program 11 sets the mode of the audio data 31 based on the property indicating the mode added to the recorded audio data 31. You can know the mode.

  When the mode can be selected as the mode of the recording / reproducing program 11, for example, in step S44, the recording / reproducing program 11 knows the mode of the recording / reproducing program 11 based on the setting of the recording / reproducing program 11. be able to. The same applies to step S54 and step S60 described later.

  If it is determined in step S44 that the IC card confirmation mode has been selected, the process proceeds to step S45, and the recording / reproducing program 11 requests the card key 33 from the non-contact IC card 3 via the reader / writer 8, and the card key Since the card key 33 is transmitted from the contactless IC card 3 in response to the request 33, the reader / writer 8 is caused to receive the card key 33 transmitted from the contactless IC card 3 in step S46, and the card The key 33 is acquired. The recording / reproducing program 11 reads the CD key 32 in step S47, and calculates the hash value of the CD key 32 by applying a hash function to the CD key 32 in step S48.

  In step S49, the recording / reproducing program 11 determines whether or not the correspondence between the CD key 32 and the card key 33 is correct. If it is determined that the correspondence between the CD key 32 and the card key 33 is correct, the process proceeds to step S50. Then, the audio data 31 is read from the HDD 117, and the audio data 31 is decrypted with the card key 33. In step S51, the sound controller 113 is caused to reproduce the audio based on the decrypted audio data 31. In step S52, the recording / reproducing program 11 notifies the user of the end of the work, such as displaying an image indicating the end of the work on the LCD 151, returns to step S21, and repeats the above-described processing.

  If it is determined in step S49 that the correspondence between the CD key 32 and the card key 33 is not correct, reproduction of the audio data 31 cannot be permitted, and the process proceeds to step S53, where the recording / reproduction program 11 reproduces the data on the LCD 151. An image indicating that the process is not executed is displayed, the process returns to step S21, and the above-described process is repeated.

  If it is determined in step S44 that the IC card confirmation mode is not selected, the procedure proceeds to step S54, and the recording / reproducing program 11 determines whether or not the hardware confirmation mode is selected. If it is determined in step S54 that the hardware confirmation mode has been selected, the process proceeds to step S55, and the recording / reproducing program 11 reads the CD key 31. In step S56, the recording / reproducing program 11 generates a hardware specific key from the CD key 32 and the private key of the personal computer 5, and in step S57, the audio data 31 is read from the HDD 117, and the read audio data 31 is generated. Decrypt with hardware specific key. In step S58, the recording / reproducing program 11 causes the sound controller 113 to reproduce sound based on the decoded sound data 31.

  In step S59, the recording / reproducing program 11 notifies the user of the end of the work, such as displaying an image indicating the end of the work on the LCD 151, returns to step S21, and repeats the above-described processing.

  If it is determined in step S54 that the hardware confirmation mode is not selected, the process proceeds to step S60, and the recording / reproducing program 11 determines whether or not the reproduction period management mode is selected. If it is determined in step S60 that the reproduction period management mode has been selected, the process proceeds to step S61, and the recording / reproduction program 11 reads the right management information 34 corresponding to the audio data 31 to be reproduced. In step S62, the recording / reproducing program 11 determines whether or not the use of the audio data 31 is permitted based on the read right management information 34.

  If it is determined in step S62 that the use of the audio data 31 is permitted, the recording / reproducing program 11 reads the audio data 31 and the CD key 32 from the HDD 117 in step S63, and the CD key 32 in step S64. The audio data 31 is decoded, and in step S65, the sound controller 113 is caused to reproduce the audio based on the decoded audio data 31. The recording / reproducing program 11 updates the rights management information 34 in step S66, and records the encrypted audio data 31, the CD key 32, and the rights management information 34 in the HDD 117 in step S67.

  In step S68, the recording / reproducing program 11 notifies the user of the end of the work, such as displaying an image indicating the end of the work on the LCD 151, returns to step S21, and repeats the above-described processing.

  If it is determined in step S62 that the use of the audio data 31 is not permitted, the recording / reproducing program 11 requests the card key 33 and the right management information 34 from the contactless IC card 3 via the reader / writer 8. In response to the request, the card key 33 and the rights management information 34 are transmitted from the non-contact IC card 3. In step S 70, the reader / writer 8 receives the card key 33 and the rights management information 34. 33 and rights management information 34 are acquired.

  The recording / reproducing program 11 calculates the hash value of the CD key 32 by reading the CD key 32 from the HDD 117 in step S71 and applying a hash function to the CD key 32 in step S72. In step S73, the recording / reproducing program 11 determines whether or not the correspondence between the CD key 32 and the card key 33 is correct.

  If it is determined in step S73 that the correspondence between the CD key 32 and the card key 33 is correct, the recording / reproducing program 11 reads the audio data 31 from the HDD 117 in step S74, and in step S75, the audio data 31 is converted to the CD key. 32 for decryption. In step S76, the recording / reproducing program 11 causes the sound controller 113 to reproduce sound based on the decoded sound data 31.

  In step S77, the recording / reproducing program 11 updates the right management information 34 based on the right management information 34 received in the process of step S70. In step S78, the recorded audio data 31, the CD key 32, The rights management information 34 is recorded and stored in the HDD 117.

  In step S79, the recording / reproducing program 11 notifies the user of the end of the work, such as displaying an image indicating the end of the work on the LCD 151, returns to step S21, and repeats the above-described processing.

  If it is determined in step S73 that the correspondence between the CD key 32 and the card key 33 is not correct, it is not permitted to reproduce the audio data 31, and therefore the process proceeds to step S53 and the LCD 151 is instructed not to execute the reproduction process. The displayed image is displayed, and the process returns to step S21 to repeat the above-described processing.

  If it is determined in step S60 that the playback period management mode is not selected, the process returns to step S21 and the above-described processing is repeated.

  In this way, a person who has purchased the content can use the content with a plurality of devices. On the other hand, the use of content by a person other than the person who has purchased the content is not permitted or restricted.

  As described above, since a person who has purchased the content can digitally copy the content with a plurality of devices and use the digitally copied content, the opportunity to use the content increases.

  In addition to being able to prevent or deter unauthorized duplication sufficiently to protect their interests, content providers can save time and effort to monitor and authenticate content usage. And cost generation can be greatly reduced.

  Even if the encrypted content leaks to the Internet, it can be used only for a predetermined period or number of times, so it cannot be used permanently by non-authorized buyers. Useful for promoting content.

  Since the contactless IC card 3 is printed with photos related to the contents, the contactless IC card 3 itself can be given transaction value. For example, a telephone card with a face value of 500 yen may be traded for tens of thousands of yen. The same value can be given to the non-contact IC card 3. Thereby, sales of CD1 itself (contents) can be promoted.

  In this way, when the content is encrypted, unauthorized use of the content can be prevented. In addition, the first key and the content recorded in the first recording medium are controlled to be read, the second key transmitted from the storage medium having the transmission unit is controlled, the first key and Based on the second key, it is determined whether or not the correspondence between the first key and the second key is correct, and when it is determined that the correspondence between the first key and the second key is correct, the content And controlling the recording of the encrypted content and the first key to the second recording medium, a person who has the right to use it properly while preventing unauthorized use. , Content can be used on multiple devices.

  When the content is decrypted, unauthorized use of the content can be prevented. Further, the reading of the first key recorded on the recording medium is controlled, the reception of the second key transmitted from the storage medium having the transmitting means is controlled, and the first key and the second key are controlled. In addition, it is determined whether or not the correspondence between the first key and the second key is correct, and when it is determined that the correspondence between the first key and the second key is correct, it is recorded on the recording medium. When the content is decrypted, unauthorized use can be prevented and a person who has a right to use the content can use the content on a plurality of devices.

  The first key and the content recorded in the first recording medium are controlled to be read, the second key transmitted from the storage medium having the transmission means is controlled, and the first key and the second key are controlled. If the correspondence between the first key and the second key is correct and it is determined that the correspondence between the first key and the second key is correct, A third key is generated from the unique information and the first key, the content is encrypted with the third key, and the recording of the encrypted content and the first key on the second recording medium is controlled. In this case, unauthorized use can be prevented, and a person who has a right to use the content can use the content on a plurality of devices.

  Controls the reading of the first key recorded on the recording medium, generates a second key from its own unique information and the first key, and records it on the recording medium with the second key. When the content is decrypted, unauthorized use can be prevented and a person who has a right to use the content can use the content on a plurality of devices.

  A second key for determining whether or not the correspondence with the first key recorded together with the content on the recording medium is correct, and the second key is stored in the device that records the content or reproduces the content. When the key is transmitted, unauthorized use can be prevented and a person who has a right to use the key can use the content on a plurality of devices.

  Although the non-contact IC card 3 has been described as storing the card key 33 and the rights management information 34 as an example of the storage medium, the non-contact IC card 3 is a contact type, proximity type, proximity type (for example, electromagnetic induction) And a remote type (for example, a microwave method), and the storage medium may be a contact type.

  The series of processes described above can be executed by hardware, but can also be executed by software. When a series of processing is executed by software, a program constituting the software may execute various functions by installing a computer incorporated in dedicated hardware or various programs. For example, it is installed from a recording medium in a general-purpose personal computer or the like.

  As shown in FIG. 4 or FIG. 6, the recording medium is distributed to provide a program to the user separately from the computer, and a magnetic disk 171 (including a flexible disk) on which the program is recorded and an optical disk 172 are distributed. (Including CD-ROM (Compact Disc-Read Only Memory), DVD (Digital Versatile Disc)), magneto-optical disk 173 (including MD (Mini-Disc) (trademark)), or semiconductor memory 174 And a ROM (ROM 222) on which a program is recorded and a hard disk included in the HDD 117, which is provided to the user in a state of being incorporated in the computer in advance.

  The program for executing the series of processes described above is installed in a computer via a wired or wireless communication medium such as a local area network, the Internet, or digital satellite broadcasting via an interface such as a router or a modem as necessary. You may be made to do.

  Further, in the present specification, the step of describing the program stored in the recording medium is not limited to the processing performed in chronological order according to the described order, but is not necessarily performed in chronological order. It also includes processes that are executed individually.

  In the present specification, the term “system” represents the entire apparatus constituted by a plurality of apparatuses.

It is a figure which shows the structure of one Embodiment of the content recording / reproducing system which concerns on this invention. It is a figure explaining recording and reproduction | regeneration of audio | voice data. It is a block diagram explaining the data currently recorded on CD, and the data memorize | stored in the non-contact IC card. And FIG. 16 is a block diagram illustrating a configuration example of a personal computer. It is a block diagram which shows the structural example of a reader / writer. It is a block diagram which shows the structural example of a non-contact IC card. 10 is a flowchart for explaining audio data recording processing in an IC card confirmation mode. It is a figure explaining embedding of the CD key to the audio data. 10 is a flowchart for explaining audio data reproduction processing in an IC card confirmation mode. It is a flowchart explaining the other process of reproduction | regeneration of audio | voice data in IC card confirmation mode. It is a flowchart explaining the recording process of the audio | speech data in hardware confirmation mode. It is a flowchart explaining the process of reproduction | regeneration of audio | voice data in hardware confirmation mode. It is a flowchart explaining the recording process of audio | voice data in reproduction | regeneration period management mode. It is a flowchart explaining the process of reproduction | regeneration of audio | voice data in reproduction | regeneration period management mode. It is a flowchart explaining the process of transmission of the data of the non-contact IC card which executes a control program. It is a flowchart explaining the process of preservation | save or reproduction | regeneration of the audio | voice data of the personal computer which performs a recording / reproducing program. It is a flowchart explaining the process of preservation | save or reproduction | regeneration of the audio | voice data of the personal computer which performs a recording / reproducing program. It is a flowchart explaining the process of preservation | save or reproduction | regeneration of the audio | voice data of the personal computer which performs a recording / reproducing program. It is a flowchart explaining the process of preservation | save or reproduction | regeneration of the audio | voice data of the personal computer which performs a recording / reproducing program.

Explanation of symbols

  1 CD, 3 Contactless IC card, 5 Personal computer, 6 PDA, 7 Mobile phone with music playback function, 8 Reader / writer, 11 Recording / playback program, 31 Audio data, 32 CD key, 33 Card key, 34 Rights management information, 101 CPU, 104 RAM, 117 HDD, 171 magnetic disk, 172 optical disk, 173 magneto-optical disk, 174 semiconductor memory, 202 modulator, 206 antenna, 208 demodulator, 211 CPU, 212 ROM, 213 RAM, 221 CPU, 222 ROM , 223 RAM, 224 EEPROM, 227 data transmitter, 230 antenna, 233 data receiver

Claims (23)

A reading control means for controlling reading of the first key and the content recorded in the first recording medium;
Reception control means for controlling reception of the second key transmitted from the storage medium having transmission means;
Determination means for determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key;
An encryption means for encrypting the content when it is determined that the correspondence between the first key and the second key is correct;
And a recording control means for controlling recording of the encrypted content and the first key onto a second recording medium. The recording control means controls the recording of the content in which the first key is embedded at a predetermined position, thereby recording the content and the first key on the second recording medium. The recording apparatus according to claim 1, wherein the recording apparatus is controlled. The recording apparatus according to claim 1, wherein the encryption unit encrypts the content with the first key. The recording apparatus according to claim 1, wherein the encryption unit encrypts the content with the second key. The reception control means further controls reception of rights management information transmitted from the recording medium for managing use of the content,
The recording apparatus according to claim 1, wherein the recording control unit further controls recording of the right management information on the second recording medium. A read control step for controlling reading of the first key and the content recorded in the first recording medium;
A reception control step for controlling reception of the second key transmitted from the storage medium having the transmission means;
A determination step of determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key;
An encryption step for encrypting the content if it is determined that the correspondence between the first key and the second key is correct;
A recording control step of controlling recording of the encrypted content and the first key onto a second recording medium. A read control step for controlling reading of the first key and the content recorded in the first recording medium;
A reception control step for controlling reception of the second key transmitted from the storage medium having the transmission means;
A determination step of determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key;
An encryption step for encrypting the content if it is determined that the correspondence between the first key and the second key is correct;
A program causing a computer to execute a recording control step of controlling recording of the encrypted content and the first key onto a second recording medium. In a playback device for playing back content recorded on a recording medium,
Reading control means for controlling reading of the first key recorded on the recording medium;
Reception control means for controlling reception of the second key transmitted from the storage medium having transmission means;
First determination means for determining whether the correspondence between the first key and the second key is correct based on the first key and the second key;
And a decrypting means for decrypting the content recorded on the recording medium when it is determined that the correspondence between the first key and the second key is correct. The read control means further controls reading of right management information for managing use of the content recorded in the recording medium,
A second determination means for determining whether or not use of the content is permitted based on the rights management information;
The playback device according to claim 8, wherein the decrypting unit decrypts the content when it is determined that the use of the content is permitted. Updating means for updating the rights management information in response to use of the decrypted content;
The playback apparatus according to claim 9, further comprising: a recording control unit that controls recording of the updated right management information onto the recording medium. The reception control means further controls reception of rights management information transmitted from the storage medium,
Update means for updating the rights management information read from the recording medium based on the received rights management information when it is determined that the correspondence between the first key and the second key is correct When,
The playback apparatus according to claim 9, further comprising: a recording control unit that controls recording of the updated right management information onto the recording medium. In a playback method for playing back content recorded on a recording medium,
A reading control step for controlling reading of the first key recorded in the recording medium;
A reception control step for controlling reception of the second key transmitted from the storage medium having the transmission means;
A determination step of determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key;
And a decrypting step of decrypting the content recorded on the recording medium when it is determined that the correspondence between the first key and the second key is correct. In a program for causing a computer to perform playback processing for playing back content recorded on a recording medium,
A reading control step for controlling reading of the first key recorded in the recording medium;
A reception control step for controlling reception of the second key transmitted from the storage medium having the transmission means;
A determination step of determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key;
And a decrypting step of decrypting the content recorded on the recording medium when it is determined that the correspondence between the first key and the second key is correct. A reading control means for controlling reading of the first key and the content recorded in the first recording medium;
Reception control means for controlling reception of the second key transmitted from the storage medium having transmission means;
Determination means for determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key;
When it is determined that the correspondence between the first key and the second key is correct, key generation means for generating a third key from its own unique information and the first key;
Encryption means for encrypting the content with the third key;
And a recording control means for controlling recording of the encrypted content and the first key onto a second recording medium. The recording control means controls the recording of the content in which the first key is embedded at a predetermined position, thereby recording the content and the first key on the second recording medium. The recording apparatus according to claim 14, wherein the recording apparatus is controlled. A read control step for controlling reading of the first key and the content recorded in the first recording medium;
A reception control step for controlling reception of the second key transmitted from the storage medium having the transmission means;
A determination step of determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key;
A key generation step of generating a third key from its own unique information and the first key when it is determined that the correspondence between the first key and the second key is correct;
An encryption step of encrypting the content with the third key;
A recording control step of controlling recording of the encrypted content and the first key onto a second recording medium. A read control step for controlling reading of the first key and the content recorded in the first recording medium;
A reception control step for controlling reception of the second key transmitted from the storage medium having the transmission means;
A determination step of determining whether or not the correspondence between the first key and the second key is correct based on the first key and the second key;
A key generation step of generating a third key from its own unique information and the first key when it is determined that the correspondence between the first key and the second key is correct;
An encryption step of encrypting the content with the third key;
A program causing a computer to execute a recording control step of controlling recording of the encrypted content and the first key onto a second recording medium. In a playback device for playing back content recorded on a recording medium,
Reading control means for controlling reading of the first key recorded in the recording medium;
Key generation means for generating a second key from its own unique information and the first key;
And a decrypting means for decrypting the content recorded on the recording medium with the second key. In a playback method for playing back content recorded on a recording medium,
A reading control step for controlling reading of the first key recorded in the recording medium;
A key generation step of generating a second key from its own unique information and the first key;
A decrypting step of decrypting the content recorded on the recording medium with the second key. In a program for causing a computer to perform playback processing for playing back content recorded on a recording medium,
A reading control step for controlling reading of the first key recorded in the recording medium;
A key generation step of generating a second key from its own unique information and the first key;
A decrypting step of decrypting the content recorded on the recording medium with the second key. Storage means for storing a second key for determining whether the correspondence with the first key recorded together with the content on the recording medium is correct;
And a transmission means for transmitting the second key to a device for recording the content or reproducing the content. The storage means further stores rights management information for managing use of the content,
The storage medium according to claim 21, wherein the transmission means transmits the right management information to the device. The storage medium according to claim 21, wherein an image related to the content is duplicated in an outer portion thereof.

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