JP2003302987A - Data processor, data processing method, program for data processing method, and recording medium with the program for data processing recorded thereon - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a data processor, a data processing method, a program for data processing method, and a recording medium with the program for data processing recorded thereon to effective avoid illegal use of a contents reproducing program by applying, for example, to an exclusive terminal device for selling audio data such as musical tunes recorded on a recording medium. <P>SOLUTION: In this invention, enciphered data is deciphered after the connection of a recording device is confirmed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a data processing device,
The present invention relates to a data processing method, a program of the data processing method, and a recording medium recording the program of the data processing method, and can be applied to, for example, a dedicated terminal device that records audio data such as music on the recording medium for sale. INDUSTRIAL APPLICABILITY The present invention can be applied to a service for distributing music or the like by a dedicated terminal device by confirming the connection of a recording device and decoding encoded data, thereby effectively avoiding illegal use of a content reproduction program. It can be so.

[0002]

2. Description of the Related Art Conventionally, in a convenience store or the like, using a dedicated terminal device, for example, an online music distribution service, a business ticket, a product sales service, a print service of image data photographed by a digital camera, a so-called ATM ( Automatic Teller Machin
It is designed to provide services such as e).

Among such services, in online music distribution, audio data used for music distribution is stored in a server, and the audio data is transmitted to a corresponding dedicated terminal device by access from the dedicated terminal device. ing. In addition, in this type of music distribution, the so-called user may make a trial listening decision and decide whether to purchase. Therefore, the audio data for trial listening is separately stored in the server in correspondence with the audio data provided for the music distribution, and the dedicated terminal is used. The audio data for trial listening is provided to the dedicated terminal device by access from the device.

Correspondingly, the dedicated terminal device on the store side accesses the server in response to the user's operation, and outputs the audio data for trial listening and the audio data for music distribution of the music desired by the user. to download. Audio data for trial listening is provided to the user via headphones or the like, and audio data for music distribution is recorded on a predetermined recording medium and provided to the user. When the audio data for trial listening and the audio data for music distribution are already downloaded and held in a hard disk device which is a built-in recording means, the downloading process is omitted in the dedicated terminal device. It is designed to execute these processes.

In such a system, such audio data for music distribution is held in the server by the encoded data which is encoded in a format in which the data is difficult to decompress unless a dedicated reproducing device is used, and the recording medium is recorded. The encoded data is not decoded in the process of recording. As a result, in such a system, unauthorized use by a third party is prevented.

On the other hand, audio data for trial listening is compressed in a format widely used on the Internet or the like and stored in a server, and is expanded and reproduced by a dedicated terminal device. As a result, in such a system, existing tools are effectively used to construct the system.

More specifically, audio data for music distribution is, for example, ATRAC (Adaptive TRansform Acous
tic Coding) is encoded and data compressed,
The audio data for trial listening is, for example, MP3 (MPEG1 Au
Data is compressed by being encoded by dio layer3). The recording medium is, for example, a mini disc.

[0008]

By the way, if the dedicated terminal device can use the audio data for distribution for trial listening, it is not necessary to separately hold the audio data for trial listening in the server and download it. . This reduces the number of files held on the server and the number of files provided for download,
It is considered that the overall configuration can be simplified.

For this purpose, it is necessary to add a function of reproducing audio data for distribution at an arbitrary editing point to a dedicated terminal device.

In addition, in recording audio data on a recording medium of this kind, since there are a plurality of compression methods, even in such online music distribution,
It is desired to support this plurality of compression methods. Moreover, in such a compression method, it cannot be said that there is no case where a method widely used on the Internet is adopted. In this way, in the music playback function to be added to the dedicated terminal device in this way, a multi-decoder capable of supporting a plurality of types of formats can be added, and this compatible format can be appropriately added or changed. It is desired to be easy.

For this purpose, it is considered most appropriate to execute such a function of decompressing data and reproducing music by software processing and providing a corresponding multi-decoder library.

However, since the content reproducing program thus developed can operate on a computer, the content reproducing program may be stolen, so that music content or the like may be illegally used. is there. That is, there is a possibility that illegal copies of music contents distributed by this type of system and contents reproducing programs will be flooded on the Internet.

The present invention has been made in consideration of the above points, and can be applied to a service for distributing music or the like by a dedicated terminal device to effectively avoid illegal use of a content reproducing program. An object of the present invention is to propose an apparatus, a data processing method, a program of the data processing method, and a recording medium recording the program of the data processing method.

[0014]

In order to solve such a problem, in the invention of claim 1, a coded data acquisition means for acquiring coded data obtained by data compression processing in a predetermined format, and the coded data are provided. The data transfer means for outputting to the recording device, the decoding means for decoding the encoded data and outputting the decoded data, and the authentication means for authenticating the connection of the recording device are provided, and the decoding means responds to the authentication result of the authentication means. Stop the operation.

According to a fifth aspect of the present invention, an authentication step for authenticating the connection of the recording device is applied to a data processing method of encoded data which is data-compressed in a format to be recorded in a predetermined recording device, And a decoding step of decoding the encoded data according to the authentication result of the authentication step.

According to a ninth aspect of the present invention, an authentication step for authenticating the connection of the recording device is applied to a program of a data processing method of encoded data which is data-compressed in a format to be recorded in a predetermined recording device. When,
And a decoding step of decoding the encoded data according to the authentication result of the authentication step.

According to the twelfth aspect of the invention, the data processing method is applied to a recording medium recording a program of a data processing method of encoded data which is data-compressed by a format recorded in a predetermined recording device. The program includes an authentication step of authenticating the connection of the recording device, and a decoding step of decoding the encoded data according to the authentication result of the authentication step.

According to the structure of claim 1, the decrypting means stops its operation according to the authentication result of the authenticating means for authenticating the connection of the recording apparatus, so that only when the regular recording apparatus is connected. The encoded data can be decoded and used for trial listening, and when the regular recording device is not connected, the decoding of the encoded data can be stopped. As a result, even if the program forming the decryption means is illegally copied, it is possible to prohibit decryption in the copied program, and this makes it possible to apply the service to distribute music etc. by a dedicated terminal device for content reproduction. It is possible to effectively avoid illegal use of the program.

As a result, claim 5, claim 9, claim 1
According to the configuration of 2, the data processing method, the data processing method program, and the data processing method, which can be applied to the service of distributing music or the like by the dedicated terminal device and effectively avoid the unauthorized use of the content reproduction program, It is possible to provide a recording medium recording the program of.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings as appropriate.

(1) Configuration of Embodiment FIG. 2 is a block diagram showing a service providing system according to an embodiment of the present invention. The service providing system 1 provides various services such as music distribution via the dedicated terminal device 2.

That is, the dedicated terminal device 2 is a dedicated terminal device for providing this type of service to the user, and is installed at a store such as a convenience store, an entertainment facility such as a game center, or a roadside. The dedicated terminal device 2 is provided with various keys for accepting user operations, an operation unit 3 including buttons, a display unit 4 for providing various types of guidance to the user, and a configuration corresponding to services provided to the user. There is.

In this embodiment, the dedicated terminal device 2
Provides a service of recording music desired by a user on a recording medium and distributing it, and a so-called Mini Disc 10 is applied as the recording medium. Here, the mini disk 10 is
It is a magneto-optical disk developed for recording and reproducing audio data.

For this reason, the dedicated terminal device 2 has a structure corresponding to this music distribution service, that is, an MD recorder 5 for recording audio data on the mini disk 10 at high speed.
A mini disk 10 is mounted on the MD recorder 5, and an MD insertion / removal section 6 for ejecting the mini disk 10 mounted on the MD recorder 5, a communication satellite 7, and a communication network 8 by ISDN.
A storage unit 9 for recording the audio data obtained from the management center 11 via the, a interface for obtaining the audio data, a fee payment processing mechanism, and the like are provided.

In the communication network 8, for example, a mobile phone communication network such as PHS, an optical fiber communication network, a satellite communication network, an XDSL (ADSL (Asymmetric Subscribe Lin)
e), HDSL (High-bit-rate DSL), WLL, analog telephone line, etc. may be applied. Further, as a processing mechanism for fee payment, there are a configuration for processing payment by cash, and a configuration for processing payment by credit card, cash card, electronic money and the like.

Note that examples of other services provided by the dedicated terminal device 2 include an industrial ticket, a product sales service, a print service of image data taken by a digital camera, a so-called ATM service, and the like. In No. 2, the structure corresponding to these services is also provided.

As a result, the dedicated terminal device 2 is operated by the operation unit 3
When the user selects the music distribution service through the operation of, the purchase desired music is accepted, and when the audio data related to this music is not recorded in the storage unit 9 in advance, the management via the communication network 8 is performed. This audio data is acquired by downloading from the center 11. Further, when the user desires a trial listening of the audio data thus obtained or the audio data held in the storage unit 9, the audio data is processed and the trial listening music is output from a speaker or headphones not shown. . On the other hand, when the user wishes to purchase, the display of the display unit 4 instructs the mini disk 10 to be attached, and the audio data relating to the purchase is sent to the mini disk
0 is recorded and a series of processing relating to fee payment is executed.
This allows the service providing system 1 to easily obtain desired music.

On the other hand, the management center 11 is a center that manages the music distribution service in the service providing system 1, and includes a management computer, a server 12 that holds audio data related to distribution, and a server 12 that holds the data. A confirmation computer 13 and the like for maintenance of the data to be stored are provided.

In this embodiment, the server 12
Is data that has been compressed in a format that is difficult to play without a dedicated playback device.
Audio data related to distribution is compressed and held by ATRAC3 and ATRAC3, which has a higher data compression efficiency than ATRAC. Below, these ATRA
A file of audio data compressed by C and ATRAC3 is called an ATRAC file as appropriate. Further, a CFF file obtained by optimizing such ATRAC file for downloading to the dedicated terminal device 2 is held together with a data file for trial listening.

This optimization is performed when the ATRAC file is output to the MD recorder 5 by the IEEE 1394 interface inside the dedicated terminal device 2.
The data of the ATRAC file is pre-packed and executed so that the packetization process can be simplified. Here, the packing process means that the data of the ATRAC file is divided into blocks in units of the amount of data forming a packet,
This is processing such as setting a sequence number in each block. As a result, in the service providing system 1, audio data can be recorded on the mini disk 10 at high speed.

In this way, in the service providing system 1, the server 12 sends the C to the dedicated terminal device 2.
The FF file is transmitted and the audio data relating to the distribution is downloaded to the dedicated terminal device 2, and the dedicated terminal device 2 holds these CFF files in the storage unit 9 and uses the ATRAC file to store the mini disc 1
Audio data is recorded at 0.

The data file for trial listening is a data that defines the processing of the CFF file when a portion of the CFF file held in the storage unit 9 is played back by the playing program and these files are played back for trial listening. Is. A data file for trial listening is created for each file by the editing computer 14, recorded in the server 12 together with the corresponding file, and provided to the dedicated terminal device 2.

The server 12 takes in an ATRAC file from a music content provider or the like, and outputs the ATRAC file to the editing computer 14 in response to a request from the editing computer 14. Further, in this way, the ATRAC file is output to the editing computer 14 to take in the CFF file and the data file for audition generated by the editing computer 14, and these files and the audio file for audition are requested by the confirmation computer 13. The data file is output to the confirmation computer 13.

Here, the editing computer 14 is a computer that creates a CFF file from an ATRAC file and an audition data file from an ATRAC file by an operator's operation. Further, the confirmation computer 13 is the ATRA in the dedicated terminal device 2.
This is an operation confirmation computer for confirming a reproduction operation for trial listening of a C file and a CFF file. Thereby, in the management center 11, the processing of each file in the dedicated terminal device 2 can be confirmed by the confirmation computer 13.

FIG. 3 is a block diagram showing the configuration of the dedicated terminal device 2 in detail. The dedicated terminal device 2 is configured by connecting an MD recorder 5, a payment processing mechanism, and the like to a main processing unit 20 that has almost the same configuration as a so-called tower computer.

Here, in the main processing unit 20, the receiving / demodulating unit 21 selectively processes the radio communication waves from the satellite 7 obtained via the antenna 22 to output various types of data transmitted from the management center 11. Data is received and output to the bus 23. As a result, the dedicated terminal device 2 acquires a CFF file related to distribution, a data file for trial listening, list data of music contents that can be provided, various commands, and the like.

ISDN interface (ISDN I
/ F) 24 establishes a communication line with the server 12 of the management center 11 via the communication network 8 by the ISDN line under the control of the reception / demodulation unit 21 executed via the bus 23, and receives / receives Various commands output from the demodulation unit 21 are output to the server 12, and various data output from the server 12 corresponding to the commands are received and output to the bus 23. As a result, the dedicated terminal device 2 accesses the server 12 for the music content desired by the user and acquires the CFF file and the trial listening data file.

User Interface (User I /
F) 26 detects a user's operation on the operation unit 3 and outputs the detection result to the bus 23, and a predetermined display screen is displayed on the display unit 4 according to an instruction from the control unit 25 executed via the bus 23. Form. As a result, the dedicated terminal device 2 displays a menu of selectable music or the like, accepts an operation such as music selection by the user, and further instructs loading of the mini disk 10 or the like.

IEEE 1394 interface (IE
EE1394 I / F) 27 is an IEEE (The Instit)
(ute of Electrical and Electoronics Engineers, Inc.)
It is an interface defined by 1394, and outputs various control commands to the MD recorder 5 under the control of the control unit 25, and notifies the control unit 25 of various statuses obtained from the MD recorder 5 by this command. In addition, the CFF file data is output to the MD recorder 5 by a series of these controls.

In these processes, when the data of the CFF file is output to the MD recorder 5, IEEE13
The 94 interface 27 omits the packing process by packing the CFF file data in advance, and outputs the CFF file data in packets. As a result, the dedicated terminal device 2 can transmit the encoded audio data at a high speed.

Analog-to-digital conversion circuit (A / D) 2
Under the control of the control unit 25, 9 performs analog-digital conversion processing on the PCM audio data output from the control unit 25 to generate and output an audio signal by an analog signal. The amplifier circuit 30 drives the speaker 31 and headphones (not shown) by the audio signal output from the analog-digital conversion circuit 29, so that the dedicated terminal device 2 can provide the user with music for trial listening. ing.

The control section 25 is composed of an arithmetic processing unit, a memory constituting a work area of the arithmetic processing unit, and the like, and constitutes a controller for controlling the operation of the dedicated terminal device 2. The control unit 25 activates the operation of the reception / demodulation unit 21 at a fixed time every day by executing a predetermined processing procedure, and monitors the data from the reception / demodulation unit 21 sent to the bus 23. Thus, various commands and the like sent from the management center 11 are received. Further, the operation of each unit is controlled according to the received command. Note that in such control, reception /
The operation of the demodulation unit 21 is maintained in a state of being started up, the reception / demodulation unit 21 receives a CFF file related to distribution, a data file for trial listening, and the received file is stored in the storage unit 9 via the bus 23. The control includes storage control, control for deleting files and the like stored in the storage unit 9 in this way, update control of the display screen on the display unit 4, and the like.

As a result, in the dedicated terminal device 2, in the music distribution service, the music contents distributed in advance via the satellite 7 are received together with the data file for trial listening and held in the storage section 9. Made,
Furthermore, the record of the music contents that can be provided is updated.

The control unit 25 controls the operation of each unit according to the user's operation detected via the user interface 26, thereby providing various services selected by the user. In this processing, when the user selects the music content distribution service, the music content desired by the user is recorded on the mini disk 10 by executing the processing procedure of FIG.

That is, in the control unit 25, when this processing procedure is started, steps SP1 to SP2
Then, the available music contents are displayed on the display unit 4. In this display, the display is hierarchically switched in response to the user's operation and, for example, a list is displayed for each music content category. In addition, in such a music content that can be provided, the server 1 which is notified in advance from the management center 11 via the satellite 7 described above.
It is executed by the data of the file held in 2.

When the content that can be provided is displayed in this way, the control unit 25 then proceeds to step SP3 and accepts the selection of the content by the user via the user interface 26.

Subsequently, the control unit 25 moves to step SP4 and determines whether or not the storage unit 9 holds the CFF file of the music content selected by the user. If a negative result is obtained here, the control unit 25 proceeds to step SP.
The process moves from step 4 to step SP5 to activate the ISDN interface 24 and secure a line with the server 12.
Furthermore, by securing this line, the user is requested to send out a CFF file and a trial data file corresponding to the music content selected by the user, and as a result, the C obtained via the ISDN interface 24 is obtained.
The FF file and the preview data file are stored in the storage unit 9. As a result, in the dedicated terminal device 2, the file of the music content desired by the user is downloaded from the server 12 together with the data file for trial listening.

When the music contents are downloaded and stored in the storage unit 9 in this way, or when a positive result is obtained in step SP4, the control unit 25 moves to step SP6. Here, the control unit 25 controls the display unit 4 via the user interface 26 to display a menu regarding whether or not to perform a trial listening, and accepts the selection regarding whether or not to perform a trial listening by selecting this menu.

If a positive result is obtained here, the control unit 25
Moves to step SP7, starts the corresponding reproduction program, and at the same time, performs the analog-digital conversion circuit 29,
The operation of the amplifier circuit 30 is started, and the CFF file is partially reproduced for the music content selected by the user by the processing by this reproduction program according to the preview data file set in the corresponding CFF file. The obtained PCM audio data is processed by the analog-digital conversion circuit 29. As a result, the control unit 25 causes the CFF by executing the reproduction program.
It is designed to decode the file and provide the user with an audio signal for audition.

When the control section 25 completes the provision of the preview audio signal and the processing of the reproduction program is completed, the control section 25 proceeds to the subsequent step SP8. When the user gives an instruction to stop the audition, the control unit 25 stops the execution of the reproduction program and proceeds to step SP8. Also, when a negative result is obtained in step SP6, the process proceeds to step SP8.

Here, the control unit 25 displays a menu as to whether or not to purchase, similarly to the case where the selection of the trial listening is received, and the selection of this menu allows the user to purchase the music content. If a negative result is obtained here, the control unit 25 proceeds from step SP8 to step SP8.
On the other hand, if a positive result is obtained, the process returns to step S2.
The process moves from P8 to step SP9. Here, the control unit 8 prompts the user to load the mini disk 10 via the display unit 4, and instructs the MD recorder 5 to start up the operation via the IEEE 1394 interface 27. When the loading of the mini disk 10 is detected via the MD insertion / removal section 6, the free space of the mini disk 10 is confirmed via the MD recorder 5, and then the data of the CFF file held in the storage section 9 is transferred to the IEEE1394. Interface 27
It is sequentially output to the MD recorder 5 via the, and the data of the ATRAC file by this CFF file is recorded on the mini disk 10. When the recording is completed, step SP
If the operation of the user is detected and the selection of whether or not to end the purchase is accepted by the user and the user subsequently desires to purchase the music content, the process returns to step SP2. On the other hand, when the user gives an instruction to end the processing, the processing proceeds from step SP10 to step SP1.
After moving to 1 and executing a series of processes related to payment of charges, M is executed via the IEEE 1394 interface 27.
The D recorder 5 and the MD insertion / ejection unit 6 are instructed to eject the mini disk 10, and the process proceeds to step SP12 to end this processing procedure.

As a result, in the dedicated terminal device 2, the CFF file is reproduced by the reproducing program to provide the user with the audio signal for the trial listening, and the ATRAC file by the CFF file is recorded on the mini disk to be recorded by the user. It is designed to be provided to.

FIG. 5 is a block diagram showing the MD recorder 5. In this MD recorder 5, the MD insertion / removal section 6
When the mini disc 10 is conveyed by the above, the mini disc 10 is placed at a predetermined placement position by a loading mechanism (not shown). When the main processing unit 20 gives an instruction to eject the mini disc 10, the mini disc 10 held at this mounting position is conveyed and ejected by the MD insertion / removal unit 6.

In the MD recorder 5, the spindle motor 40 is used for the mini disk 10 held at this mounting position.
Are chucked and driven to rotate at a predetermined rotation speed. In this MD recorder 5, for example, when the audio data of CD format with a sampling frequency of 44.1 [KHz] and quantization of 16 bits is set at 1 × speed, the audio input from the IEEE 1394 interface 27 at a speed of 16 × speed. It is designed to be able to record data. The spindle motor 40 rotationally drives the mini disk 10 at a speed corresponding to the 16x speed.

The sled mechanism 41 moves the optical head 43 in the radial direction of the mini disk 10 under the control of the servo circuit 42, so that the MD recorder 5 can seek. The optical head 43 emits a laser beam from a built-in semiconductor laser, and focuses the laser beam on the information recording surface of the mini disk 10 by the objective lens 44. Further, the optical head 43 receives the return light obtained from the mini disk 10 by the irradiation of the laser beam through the objective lens 44, receives the return light by a predetermined light receiving element, and outputs the light reception result. As a result, the MD recorder 5 processes the received light result and changes the signal level according to the tracking error amount, the tracking error signal TE, the focus error signal FE whose signal level changes according to the focus error amount, and the mini disk 10. The wobble signal GFM whose signal level changes in accordance with the meandering of the groove which is the guide groove of the laser beam formed on the information recording surface of the mini disk 10 and the data formed on the mini disk 10 can be reproduced. Has been done.

In the irradiation of the laser beam, the optical head 43 moves the objective lens 44 by a predetermined actuator 45 so that processing such as focus search can be executed, and further tracking control and focus control can be performed. Has been done.

The optical head 43 intermittently raises the light amount of the laser beam at a predetermined time interval during recording, and thereby records desired data on the mini disk 10 by a so-called pulse train method. .

In order to do this, in the MD recorder 5,
The RF amplifier 47 amplifies the light reception result of the return light output from the optical head 43 with a predetermined gain and then performs a matrix calculation process, whereby a tracking error signal TE, a focus error signal FE, a wobble signal GFM, and a mini disk 10 are obtained. A reproduction signal RF whose signal level changes according to the formed pit row and a reproduction signal RF whose signal level changes according to the polarization of the return light are generated.

The servo circuit 42 moves the actuator 45 of the optical head 43 on the basis of the tracking error signal TE and the focus error signal FE, and thereby executes processes such as tracking control, focus control and focus search. Also the system controller 4
The thread mechanism 41 is controlled by the control of 8, and the seek processing is executed by this. Also, the address decoder 49
The rotation speed of the spindle motor 40 is controlled so that the carrier signal of the wobble signal detected in step S4 has a predetermined frequency.

The address decoder 49 detects a carrier signal from the wobble signal GFM and outputs this carrier signal to the servo circuit 42. Further, the wobble signal GFM is frequency-demodulated on the basis of this carrier signal and the demodulation result is processed to detect the address data recorded on the mini disk 10 due to the meandering of the groove.

The magnetic head 50 is held so as to face the optical head 43 with the mini disk 10 interposed therebetween.
At the time of recording, a modulation magnetic field is applied to the laser beam irradiation position by the optical head 43 by driving the magnetic head drive circuit 51. The magnetic head drive circuit 51 drives the magnetic head 50 by the output data of the encoder / decoder 52 during recording. Thus, the MD recorder 5 can record the output data of the encoder / decoder 52 on the mini disk 10 by applying the thermomagnetic recording method.

The encoder / decoder 52 binarizes and processes the reproduction signal RF obtained from the RF amplifier 47, thereby processing the PTOC and U recorded on the mini disk 10.
Reproduces and outputs TOC data. Further, at the time of recording, after adding an error correction code to the output data of the memory controller 53, interleave processing and EFM modulation processing are performed, and data of the processing result is added with subcode data, sync data, etc., and the magnetic head drive circuit 51 is added. Output to.
Further, under the control of the system controller 48, UTOC data is generated and output to the magnetic head drive circuit 51.

The memory controller 53 uses an IEEE 1394 interface (I
Input the data of the CFF file via the EEE1394 I / F) 54. The memory controller 53 records these data in a random access memory (RAM) 55, temporarily holds them, and outputs them to the encoder / decoder 52 in units of recording on the mini disk 10.

IEEE 1394 interface 54
Is an interface based on IEEE1394,
Various commands obtained from the main processing unit 20 and responses corresponding to these commands are input to and output from the system controller 48. Further, it receives the data of the CFF file, which is the data used for recording on the mini disk 10 obtained from the main processing unit 20, and outputs it to the memory controller 53 by the data of the ATRAC file. Thus, the CFF file is generated by packing the data of the ATRAC file in correspondence with the data transmission by the IEEE 1394 interface, and the IFF of the transmission side is generated.
In the EEE1394 interface 27, in response to this packing processing, the packing processing is omitted and the data of the CFF file is transmitted, so that the I
The EEE1394 interface 54 outputs the data of the ATRAC file by processing the payload of the received packet in the same manner as the normal processing.

The system controller 48 is a central processing unit (CP) for controlling the operation of the MD recorder 5 as a whole.
U), which secures a work area in the random access memory (RAM) 58 and is a read only memory (ROM).
By executing a predetermined processing procedure recorded in 57, the data of the ATRAC file is recorded in the mini disk 10 in response to a command from the main processing unit 20 input via the IEEE 1394 interface 54.

In this embodiment, the system controller 48 uses the IEEE 1394 interface 54.
Unless controlled by a dedicated driver that is input via the controller, a series of processes such as recording are not executed. As a result, in the host device of the MD recorder 5, the corresponding driver is normally activated. Whether or not the MD recorder 5 is connected can be confirmed in the higher-level reproduction program depending on whether or not the MD recorder 5 is available.

As described above, in the higher-level reproduction program, it is determined whether or not the MD recorder 5 is in an available environment depending on the presence / absence of the corresponding driver. Authenticates the connection of the MD recorder 5 in the dedicated terminal device 2 by the response from the MD recorder 5 by returning the response to the upper program based on the response obtained from the MD recorder 5 which is the original device upon activation. It is designed to do.

As a result, in the dedicated terminal device 2,
Audio data compressed in a format corresponding to the playback device of the mini disk 10 is used by the management center 1
The data-compressed audio data obtained from No. 1 is recorded on the mini disk 10 at a high speed of 16 times. Exceptionally, the reproduction program is executed in accordance with the preview data file so that the data-compressed audio data is partially reproduced and provided for preview.

In this service providing system 1,
This reproduction program is provided in the dedicated terminal device 2, the confirmation computer 13, and the editing computer 14.

This reproducing program is, as shown in FIG. 6, an API provided by a multi-decoder library.
It is composed of (Application Programming Interface), and sequentially decodes the encoded data of the ATRAC file and the CFF file by the corresponding decoder, and outputs the PCM audio data which is the decoded data. As a result, in this embodiment, the dedicated terminal device 2 can listen to the CFF file by executing the reproducing program according to the trial listening data file. The checking computer 13 can check the ATRAC file, the CFF file, and the audition data file, and the editing computer 14 can generate the audition data file.

Further, in the checking computer 13 and the editing computer 14, the authentication terminal device of the connected device corresponds to the multi-decoder library, and a parallel interface or USB (Universal Serial Bus) is used.
s) to be connected. This authentication terminal device is a device that holds a unique identification code and outputs a response code based on this unique identification code in response to the input of the authentication code. It is possible to determine whether or not the authentication terminal device is connected. In this embodiment, the authentication terminal device is provided to the computer provided by the reproduction application program and the multi-decoder library.

In the API provided by this multi-decoder library, file open (o
pen), file close (close), setup (setup), read (read), seek (s)
The functions such as "eek", setpoint, etc. are defined.

Of these, the file open function is a function for instructing the file open, and the reproducing program is adapted to open the file specified by the parameter described in this function. When the file is opened, the reproduction application program also activates a decoder (in this embodiment, a program for decoding the data of ATRAC or ATRAC3 file or CFF file, the details of which will be described later) specified by the parameter. Then, the processing procedure shown in FIG. 1 is executed.

That is, the program related to this file opening starts from step SP21 to step S21.
Moving to P22, it is determined whether or not the MD recorder 5 is connected. Here, this program determines whether or not the MD recorder 5 is connected from the response from the driver that drives the MD recorder 5, and if it is connected, it is normally installed in the dedicated terminal device 2. If it can be determined that it is the case, the process moves to step SP23 to execute the process of opening the corresponding file, and then moves to step SP24 to end this processing procedure. It should be noted that, in this file opening, if once started and a positive result is obtained in step SP22, a predetermined flag is set, and at the time of subsequent startup, step SP2
2, it is determined whether or not the MD recorder 5 is connected by checking this flag, thereby effectively avoiding frequent MD recorder 5 accesses,
It is designed to effectively avoid a decrease in processing speed.

On the other hand, if a negative result is obtained in step SP22, in this case, it may be considered that the data was illegally copied and installed in a normal computer. Therefore, the process proceeds from step SP22 to step SP25. Here, this program determines whether or not the authentication terminal device is connected. Here, this program outputs a predetermined authentication code to a port to which the authentication terminal device is connected, and confirms the response to confirm the normal connection of the authentication terminal device.

If a positive result is obtained here, in this case,
For example, the confirmation computer 13 and the editing computer 1
4, it is considered that the MD recorder 5 is used without being connected, and the process proceeds to step SP23. On the other hand, if a negative result is obtained in step SP25, in this case, since it is not the operation in the checking computer 13 or the editing computer 14, the process moves from step SP25 to step SP26, and the predetermined end is performed without opening any file. After executing the processing, the process proceeds to step SP24 and the processing procedure is ended.

According to this embodiment, in the case where the reproduction program is concerned with an illegal copy, the file itself to be reproduced is prevented from being opened, and the program relating to such an illegal copy is used. It is made impossible.

On the other hand, the file close is a function corresponding to the file open, and the file opened by the file open is closed.

Further, in the setup, it is a function that secures a read buffer for decoding data, and in the parameter, the capacity of the PCM audio data which is the processing result to be passed to the subsequent program can be specified in units of seconds. An area for decoding data is secured corresponding to the designation of the capacity in the PCM audio data.

In reading, this is a function for reading the data of the file by opening the file into the buffer secured by the setup, and the decoded PCM
It is designed to pass audio data to subsequent programs.

Further, in seek, it is a function for changing the pointer related to read. The set point is a function that specifies the range related to the read.
As shown in FIG. 7, parameters for fade-in and fade-out processing can also be designated.
In FIG. 7, a file having a total playback time of n seconds is opened by opening the file, and the vertical axis indicates the volume. At the set point, the playback start position ul
Start, playback end position ul Stop, fade-in transition time ul Fadein Time, fade-out transition time ul Fadeo
The ut Time can be set.

As a result, the audition data file is composed of files in which these functions are sequentially described together with parameters as shown in FIG. 8, and is created for each CFF file.

In the reproducing program, the processing procedure shown in FIG. 9 is executed in accordance with the description of the preview data file so that the CFF file is partially reproduced and provided for preview.

That is, when the reproducing program starts the operation, it moves from step SP31 to step SP32, opens the file to be reproduced by opening the file, activates the decoder, and in the subsequent step SP33, secures a buffer for reading data by setup. To do. Then, by seeking, set point, etc.,
After specifying the decryption range and the like, the process proceeds to step SP34. Here, the playback program uses the read function to
With respect to the file opened, the data of the CFF file, which is the encoded data, is read into the buffer secured by the setup according to the pointer specified by the set point. As a result, in the reproducing program, in the subsequent step SP35, the read data is sequentially passed to the corresponding decoder, and the PCM audio data which is the processing result is received.

When the processing of the coded data read out to the buffer is completed, in the reproducing program, in the following step SP36, it is judged whether or not the reproduction is completed up to the reproduction end position designated by the set point, and the result is negative here. When the result is obtained, the process returns to step SP34. As a result, the reproduction program is executed in step SP3.
The processing procedure of 4-SP35-SP36-SP34 is repeated to sequentially decode the audio data in units of the buffer capacity designated by the setup, and when the reproduction is completed up to the reproduction end position, the process proceeds to step SP37. Here, the reproducing program closes the file and, in the following step SP38, releases the area secured in step SP33, and then moves to step SP39 to end this processing procedure.

In these processes, the reproduction program, when parameters such as fade-in are set, sequentially processes the value of the PCM audio data obtained from the decoder to perform the process such as fade-in. Run.

In the reproduction program, the PCM audio data thus obtained is converted into an analog signal by the analog-digital conversion circuit 29, then amplified by the amplification circuit 30 and output to the headphone. It is controlled so that the audio signal for previewing is provided to the user.

In checking the ATRAC file and the CFF file itself in the checking computer 13 and the editing computer 14, by omitting the pointer setting by the set point, the entire opened file can be played back and checked. ing. When creating the preview data file in the editing computer 14, the preview data file is created as appropriate.
By confirming the trial listening with the trial listening data file, the trial listening data file is corrected and executed.

As a result, as shown in FIG. 10, in the confirmation computer 13 and the editing computer 14, the reproduction program operates on condition that the MD recorder 5 or the authentication terminal device 60 is connected, The ATRAC file and the CFF file held in the server 12 can be played back. Further, as shown in FIG. 11, in the dedicated terminal device 2, MD
On condition that the recorder 5 is connected, the reproduction program operates to reproduce the CFF file stored in the storage unit 9 via the communication network 8.

FIG. 12 is a functional block diagram for explaining the decoder provided by this decoder library in comparison with the recording on the mini disk 10 in the dedicated terminal device 2. In this decoder library, an ATRAC decoding unit 61, ATRAC3, which decodes audio data encoded by ATRAC so as to correspond to a data format used for decoding,
A for decoding audio data coded by
TRAC3 decoding unit 62, depacking unit 63 for converting CFF file data into ATRAC file data
However, it is adapted to be incorporated as appropriate by the parameter of the file open.

That is, when reproducing the audio data compressed by ATRAC in the checking computer 13 and the editing computer 14, the ATRAC file data is sequentially provided to the ATRAC decoding unit 61 via the buffer 65 secured by the setup. And is decoded by the ATRAC decoding unit 61. Further, the PCM audio data which is the decoded data is output to the reproducing unit 67 via the sound buffer 66, and this PCM audio data is sequentially provided to the operator.

On the other hand, when reproducing audio data compressed by ATRAC3,
Instead of the decoding unit 61, the ATRAC3 decoding unit 62
Is incorporated, the data of the ATRAC file is sequentially provided to the ATRAC3 decoding unit 62 via the buffer 65, and is decoded by the ATRAC3 decoding unit 62. Further, the PCM audio data which is the decoded data is output to the reproducing unit 67 via the sound buffer 66, and this PCM audio data is sequentially provided to the operator.

On the other hand, when reproducing the data of the CFF file, the C is stored in the depacking unit 63 via the buffer 65.
The data of the FF file is sequentially input, and the packing of the CFF file is released here. Further, the audio data obtained by removing the packing in this way is AT
When the audio data is data compressed by the RAC, it is decoded by the ATRAC decoding unit 61, and when the audio data is the audio data which is data compressed by the ATRAC3, it is decoded by the ATRAC3 decoding unit 62.

In these processes, in this decoder library, the data capacity for 2 seconds is secured as the sound buffer, and even if the decoded PCM audio data is illegally acquired by the modification of the reproduction application program, It is made to be extremely difficult to obtain all the music contents.

As a result, in this embodiment, in the checking computer 13 and the editing computer 14, the data input / output interface with the server 12 is in a format that is difficult to reproduce unless a specific reproducing apparatus is used. Coded data acquisition means for acquiring coded data that has been compressed is configured, and arithmetic processing means is configured for decoding means for decoding the coded data and outputting the decoded data. There is. In addition, the MD recorder, the interface for connecting the authentication terminal device, and the arithmetic processing means are recording devices M.
The D recorder and the authenticating means for authenticating the authenticating terminal device which is the authenticating device are constituted, and the decrypting means constituted by the arithmetic processing means stops the operation according to the authentication result of the authenticating means.

On the other hand, in the dedicated terminal device 2,
The reception / demodulation unit 21, the control unit 25, and the storage unit 9 constitute an encoded data acquisition unit that acquires encoded data that has been subjected to data compression processing, and the control unit 25 and the IEEE 1394 interface 27 transmit the encoded data. The data transfer means for outputting to the MD recorder 5 which is a recording device is configured. Further, the control unit 25 is configured to configure a decoding unit that decodes the encoded data and outputs the decoded data, and an authentication unit that authenticates the connection of the recording device.

On the other hand, in the MD recorder 5,
Random access memory 55, memory controller 53
However, the conversion means for converting the encoded data input from the data transfer means of the dedicated terminal device 2 into a recording unit on the recording medium is configured, and the configuration from the encoder / decoder 52 to the magnetic head 50, the mini disk 10. Various components for driving the optical head 43 constitute recording means for recording the encoded data of this recording unit on the recording medium. Also, this MD recorder 5 IEEE13
94 interface 54, this interface 54
The system controller 48 for controlling the control means constitutes a response means for outputting a response to the authentication means of the dedicated terminal device 2.

(2) Operation of Embodiment In the above-described configuration, in the service providing system 1 (FIG. 2), the music business operator edits the computer 14 for editing.
Etc., the PCM audio data is compressed by ATRAC or ATRAC3 to create an ATRAC file, and this ATRAC file is recorded in the server 12. In addition, in response to packetization in downloading to the MD recorder 5, the server 1
The data of the ATRAC file stored in 2 is packed to create a CFF file, and the CFF file is stored in the server 12. Further, in this way, the ATRAC file and the CFF file recorded in the server 12 are reproduced, and further, the ATRAC file held in the editing computer 14 is reproduced to create a preview data file (FIG. 8). The data file for trial listening is stored in the server 12. As a result, in the service providing system 1, the content provided for music distribution is accumulated in the server 12 together with the data for trial listening.

A thus accumulated in the server 12
The TRAC file and the CFF file are reproduced and confirmed by the confirmation computer 13, and the CFF file is reproduced by the preview data file to confirm the music for preview.

In the service providing system 1, among the music contents accumulated in the server 12 in this way, the music contents which are considered to be so popular are
It is distributed to the dedicated terminal device 2 via the satellite 7 together with the CFF file, the corresponding data file for trial listening, the list data of music contents that can be provided, and the like, and is stored in the storage unit 9 of the dedicated terminal device 2.

In the service providing system 1, when the user holds the music contents in this manner and the user operates the dedicated terminal device 2 to listen to the music, the music content desired to be listened to is stored in the storage unit 9. If not held, the server 12 is accessed from the dedicated terminal device 2 and the CFF is performed for the music content related to the request for audition.
The file and the data file for trial listening are downloaded from the server 12 and stored in the storage unit 9. In the dedicated terminal device 2, the music content downloaded as described above, the music content distributed by using the satellite 7, and the music content held in the storage unit 9 by the download requested by another user are partially reproduced. It is provided to users for listening.

When the user gives an instruction to record the music content on the mini disk by purchasing the music content, the music content held in the storage unit 9 in this way is recorded on the mini disk 1
It is recorded at 0.

In recording the music contents on the mini disc 10, the data of the CFF file obtained by packing the data of the ATRAC file is output to the MD recorder 5 and recorded on the mini disc 10, whereby the dedicated terminal device 2 In the above, the burden on the interface for downloading such music contents to the MD recorder 5 can be remarkably reduced.
It is designed to record music contents on a mini disc at high speed.

In the service providing system 1 for providing music contents in this way, the dedicated terminal device 2 partially reproduces the CFF file for recording on the mini disk 10 and provides it for trial listening. As a result, in the service providing system 1, it is not necessary to separately hold a music file for trial listening in the server 12, and the burden on the server 12 and the burden on data communication between the server 12 and the dedicated terminal device 2 are accordingly increased. Has been designed to be able to reduce.

In the service providing system 1, the reproduction of the music content for trial listening is executed by the reproducing program, and the reproducing program is composed of the multi-decoder library by the API, so that the music for trial listening in a plurality of formats is formed. Playback can be handled easily and flexibly. That is, it is possible to support a plurality of types of data compression formats, and it is possible to support a compression format in a format such as AIFF, WAV, or a new compression format with a minimum modification. It can also be applied to reproduction processing in the confirmation computer 13 and the editing computer 14.

However, in the case of reproducing a music content which is data-compressed by software in this way, this kind of data compression is performed in an unintended device or network by an illegal copy of the reproduction program. This may happen when music content is used.

In the service providing system 1, the MD is opened when the file is opened in this reproducing program.
When the recorder 5 is authenticated and the MD recorder 5 is not connected, the decryption process by the reproduction program is stopped without opening the file.

As a result, even if the reproduction program is illegally copied from the dedicated terminal device 2, for example,
When the MD recorder 5 is not confirmed to be connected when the reproduction program is installed and executed on a computer, the execution of the program related to the illegal copy is stopped, and the program related to the illegal copy is meaningless. Therefore, it is possible to effectively prevent illegal use of the content reproduction program.

Further, even when the data is illegally copied from the confirmation computer 13 and the editing computer 14, similarly,
The execution of the program related to the illegal copy can be stopped so that the program related to the illegal copy becomes meaningless, and thus the illegal use of the content reproduction program can be effectively avoided.

In the processing as described above, the MD recorder 5 may not always be connected in the reproduction in the confirmation computer 13 and the editing computer 14. Therefore, when the authentication terminal device is in use. In the case where the MD recorder 5 is not connected in the reproducing program, the file is opened and reproduced in the case where the predetermined authentication terminal device 60 is connected. As a result, the processes in the checking computer 13 and the editing computer 14 can be flexibly executed.

In the reproducing program for executing the authentication process by opening the file in this way, a corresponding decoder is prepared by opening the file,
This makes it possible to hide the decoder corresponding to the data compression format without making the operator aware of this decoder when creating a data file for trial listening. This also makes it possible to effectively prevent unauthorized use of this type of program, and further reduce the burden on the operator.

Further, since it is possible to support the seek of the file and the like, it is possible to provide a desired preview music by creating a preview data file with a simple description.

(3) Effects of the Embodiments According to the above configuration, the connection of the recording device is confirmed and the encoded data is decoded, so that the dedicated terminal device is applied to the service of distributing music, It is possible to effectively avoid illegal use of the content reproduction program.

Even when such a recording device is not connected, the operation of the reproduction program is stopped in accordance with the response code obtained by outputting the authentication code to the authentication device which is the authentication terminal device. It is possible to play the content, improve the usability on the management side, and effectively avoid illegal use of the content playback program.

Also, the encoded data is packed and held and transferred to the recording device, and the packing is released by the decoding means to generate the decoded data, whereby the music content is recorded on the recording medium at a high speed. By downloading, this music content file can be used for audition.

(4) Other Embodiments In the above-described embodiments, the case has been described in which coded data obtained by data compression is packed and transmitted to a dedicated terminal device, but the present invention is not limited to this. Instead, the packing process may be omitted if necessary for transmission.

In the above-described embodiment, the case where the decoded PCM audio data is processed by analog-digital conversion is described, but the present invention is not limited to this, and the PCM audio data is output to an external device and It can also be widely applied to the case where digital-analog conversion is performed by an external device for processing.

In the above embodiment, the ATR
The case where the audio data is encoded by AC and ATRAC3 has been described, but the present invention is not limited to this.
It can also be widely applied to data compression by other formats.

Further, in the above embodiment, the case where the music content is provided by the dedicated terminal device has been described, but the present invention is not limited to this, and is widely applied to the case where various contents such as movies are provided. be able to.

[0120]

As described above, according to the present invention, by confirming the connection of the recording device and decoding the encoded data,
It is possible to effectively avoid illegal use of the content reproduction program by applying it to a service of distributing music or the like by a dedicated terminal device.

[Brief description of drawings]

FIG. 1 is a flowchart for explaining a file opening process in a reproduction program according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a service providing system to which the reproduction program of FIG. 1 is applied.

3 is a block diagram showing a dedicated terminal device in the service providing system of FIG.

FIG. 4 is a flowchart for explaining a download process in the dedicated terminal device of FIG.

5 is a block diagram showing an MD recorder in the dedicated terminal device of FIG. 3. FIG.

FIG. 6 is a functional block diagram showing a structure of a reproduction program.

FIG. 7 is a characteristic curve diagram for explaining fade-in and fade-out processing.

FIG. 8 is a chart provided for explaining a trial listening data file.

FIG. 9 is a flowchart for explaining a reproduction program.

FIG. 10 is a functional block diagram showing configurations of a confirmation computer and an editing computer.

FIG. 11 is a functional block diagram showing a dedicated terminal device.

FIG. 12 is a functional block diagram showing a configuration of a decoder in a reproduction program.

[Explanation of symbols]

1 ... Service providing system, 2 ... Dedicated terminal device, 5
…… MD recorder, 7 …… Satellite, 8, 25 …… Control unit,
9 ... storage unit, 10 ... mini disk, 11 ... management center, 12 ... server, 13 ... confirmation computer, 14 ... editing computer, 27, 54 ... IE
EE1394 interface, 60 ... Authentication terminal device

Claims (14)

[Claims] 1. A coded data acquisition unit that acquires coded data that has been subjected to data compression processing in a predetermined format, a data transfer unit that outputs the coded data to a recording device, and a unit that decodes the coded data. And a decryption unit that outputs decrypted data, and an authentication unit that authenticates the connection of the recording device, and the decryption unit stops the operation according to the authentication result of the authentication unit. .. 2. An authentication device, which records and holds a unique identification code, and outputs a response code based on the identification code in response to the input of the authentication code, wherein the authentication means is provided in the authentication device. The data processing apparatus according to claim 1, wherein the operation is stopped according to a code of the response obtained by outputting the authentication code. 3. The recording device converts the encoded data input from the data transfer unit into a recording unit for recording on a recording medium, and records the encoded data in the recording unit on a recording medium. The data processing apparatus according to claim 1, further comprising a recording unit and a response unit that outputs a response to the authentication unit, wherein the authentication unit authenticates the connection of the recording device based on the response. 4. The encoded data is packed corresponding to the data transfer by the data transfer means, and the decoding means unpacks the encoded data to generate the decoded data. The data processing device according to claim 1, wherein: 5. A data processing method for encoded data, which is data-compressed in a format to be recorded in a predetermined recording device, comprising: an authentication step of authenticating the connection of the recording device; and an authentication result of the authentication step. Accordingly, there is provided a decoding step of decoding the coded data. 6. A step of external device authentication for authenticating the external device by a response obtained by outputting a predetermined code to the external device, wherein the step of decrypting is based on the authentication result by the authentication step. The data processing method according to claim 5, further comprising: decoding the encoded data according to an authentication result of the external device authentication step. 7. The data processing method according to claim 5, wherein the authenticating step authenticates the connection of the recording device by a response from the recording device. 8. The encoded data is packed corresponding to an interface to the recording device, and the decoding step includes a depacking step of unpacking the encoded data. The data processing method according to claim 5. 9. A program for a data processing method of encoded data which is data-compressed in a format to be recorded in a predetermined recording device, the authentication step of authenticating a connection of the recording device, and the authentication by the authentication step. And a decoding step of decoding the encoded data according to a result, the program of the data processing method. 10. An external device authentication step of authenticating the external device by a response obtained by outputting a predetermined code to the external device, wherein the decrypting step is performed by the authentication result of the authentication step. In addition, the program of the data processing method according to claim 9, wherein the encoded data is decoded according to an authentication result of the external device authentication step. 11. The program of the data processing method according to claim 9, wherein the authenticating step authenticates the connection of the recording device by a response from the recording device. 12. A recording medium having recorded therein a program of a data processing method of encoded data which is data-compressed in a format to be recorded in a predetermined recording device, wherein the program of the data processing method is stored in the recording device. A recording medium recording a program of a data processing method, comprising: an authentication step of authenticating a connection; and a decoding step of decoding the encoded data according to an authentication result of the authentication step. 13. The program of the data processing method has a step of authenticating the external device by a response obtained by outputting a predetermined code to the external device, and the decrypting step includes The program of the data processing method according to claim 12, wherein the encoded data is decoded according to the authentication result of the external device authentication step in addition to the authentication result of the authentication step. recoding media. 14. The recording medium recording the program of the data processing method according to claim 12, wherein the authenticating step authenticates the connection of the recording device by a response from the recording device.