JP2010182294A - Method for ordering and transmitting media object and facility suitable thereto - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for selling and using a digital media object, and a mobile communication terminal suitable thereto. <P>SOLUTION: The media object is ordered to a center using a user's mobile communication terminal, and the center transmits an item for the time determined by the center at which the media object is available to the communication terminal. The communication terminal automatically contacts with the center at the stored time, and the center transfers the media object to the mobile communication terminal. The transferred media object is reproduced by an appropriate medium through a media reproduction module. The contents of the media object may be encrypted prior to the transfer to the mobile terminal. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method and suitable equipment for ordering and delivering media objects. In particular, the present invention relates to a method and suitable equipment for ordering and delivering digital media objects.

  Especially with the spread of the Internet, for example, having software media content, text media content, graphic media content, image media content, audio media content, video media content, or combination multimedia content Digital media objects are provided over the Internet, downloaded from the Internet, temporarily stored on a personal computer, and transferred to an appropriate mobile media playback device such as a compact disc by a data carrier, for example. Playing with media playback devices or playing back with a personal computer if it is suitable for this is becoming increasingly popular. In order to reduce the transmission time and storage capacity required for digital media objects, media objects are typically stored and transmitted in a compressed form and decompressed before or during playback. Standards for storage of digital media objects, respective compression / decompression, such as MPEG-3 (Moving Picture Exort Group), can be used, and this is expected to further develop in the future. Many users who will certainly be interested in playing media objects will be treated as they are designated to purchase media objects from the Internet to a computer and to play media objects. I feel as a major limitation that an easy mobile media player must first transfer from a personal computer to the media player.

  Patent application EP804012 describes a multimedia terminal and method for multimedia reception, whereby a multimedia such as MPEG data or DAB data (Digital Audio Broadcasting) is received, especially via a wireless network, to the user. Can be played. The multimedia terminal described in EP804012 includes a two-way communication terminal such as a mobile radio telephone, which can be used to order a multimedia program through a communication network and load it into the multimedia terminal. According to the teachings of EP804012, when demand is high, the resources necessary for delivery of ordered multimedia programs, such as the communication network and / or the server in charge, are overloaded and serve the user properly. May no longer be possible.

International Publication No. 99/09718 JP 10-198610 A JP-A-10-269290 JP-A-10-269289 JP-A-11-96258 Japanese Patent Laid-Open No. 10-154185

  The object of the present invention is to propose a new and better method and suitable equipment for ordering and delivery of media objects, in particular without the drawbacks mentioned above.

According to the invention, this object is achieved in particular by the elements of the independent claims. Moreover, further advantageous embodiments emerge from the dependent claims and the description.
For example, a digital media object having software media content, text media content, graphic media content, image media content, audio media content, video media content, or combined multimedia content , Transferred from a center to a mobile communication terminal through a wireless network such as a mobile phone wireless network, a DAB wireless network (Digital Audio Broadcasting), a satellite-based wireless network, or other wireless network, where it is stored in memory Store digital media objects. The media playback module of the communication terminal plays back the media content contained in the media object as a sound wave by an electroacoustic transformer, for example, as a light wave by a display, through an appropriate medium. A combination of a communication terminal capable of receiving digital data from a center and a media playback module allows a moving user to receive and play a media object, in which case there is no need to designate a personal computer, and The advantage is that the media object itself does not have to be transmitted between different devices.

  A user orders at least one media object from at least one center, and the user places an object order containing at least one object identifier via a communication terminal on a mobile wireless network, eg, a GSM network, a UMTS network, or other The data is transmitted to the center through the mobile network, and the media object assigned to the object identification name is transmitted from the center to the communication terminal. This is because the user can not only reproduce the media object stored in his / her communication terminal, but also voluntarily obtain the desired media object for reproduction with his / her purpose. It has the advantage of being able to.

  The above object is achieved in accordance with the present invention, in particular, that an object order for a digital media object is received at the center and a description of which order media object is available at which center determination time is included in the communication. This is accomplished by being delivered to the terminal and by automatically contacting the center at a determined time and obtaining from the center a media object that can be transferred at the determined time. This has the advantage that the center can plan for the full load of resources needed to transmit media objects.

  The media content of the media object is encrypted with the first key assigned to this media object before transmission to the communication terminal and is decrypted again with this first key before playback. preferable. This prevents an unauthorized user from playing the media object inappropriately, in which case the assignment of a separate first key to the media object allows management of the use of each media object. , Allowing the user to freely use the key for each media object, eg for a corresponding payment.

  In a variant embodiment, the media object stored in the first communication terminal can be selected by the user of the first communication terminal and transferred to the second communication terminal, in which case the above-mentioned media object Media content remains encrypted. This allows unequal users to play the media object indirectly between users without being able to play the media object without the key assigned to the media object. Transfer from the first communication terminal to the second communication terminal is performed through a wired or wireless interface, for example, an infrared interface such as a high-speed infrared (HSIR) interface or an IrDA interface (Infrared Data Association), an induction interface such as a radio frequency identification (RFID). ) Interface, home RF (Radio Frequency) interface, European digital cordless phone (DECT) interface or other cordless telecommunications system (CTS) interface, or a radio frequency radio interface such as a so-called "Bluetooth interface".

  The key assigned to the first media object is transferred to the communication terminal by the public second key, where it is decrypted by the dedicated third key, in this case a pair of the public second key and the dedicated third key. Is preferably assigned to the user of the communication terminal each time. This allows the key assigned to the media object to be securely transferred to the legitimate user each time, and this user can use the dedicated third key attached to the public second key used for encryption. Use freely.

  In an alternative embodiment, the terms of use for the media object are also transferred to the communication terminal separately or together with the key assigned to the first media object. As a result, the right of use and the price list directly with this key can also be used, for example, license fees and / or price lists for the one and / or many but time-limited playback of the media object, in some cases Can also transfer entries for a limited period or a limited number of playbacks.

  In an alternative embodiment, in order to decrypt the media content of the media object, the decrypted first key assigned to the media object is securely passed to the decryption module of the communication terminal. That is, actions are taken in response to the implementation and completion of the decryption module at the communication terminal, thereby making it impossible to illegally read the decrypted first key upon transfer to the decryption module.

  Preferably, the media object includes object information that is not additionally decrypted in the media content, and this information can be retrieved from the center through the mobile radio network by the communication terminal and displayed on the display of the communication terminal. In this case, the user of the communication terminal determines at least one media object for ordering the object, and the user selects corresponding object information from the displayed list of object information by the operation element of the communication terminal. Object information that has not been decrypted includes, for example, a price list for the media object, a label for the media object, such as the title of a song or video, the playback time of the media object, a short playback sample of the media object, one of the media objects Contains one or more commentators and / or authors and the object identifier of the media object.

  The object information of the media object preferably includes a description regarding the center from which the media object can be obtained. This description can be used from a communication terminal, for example, to automatically contact the center.

  The object information of the media object preferably includes a description relating to the key server that makes the encoded first key available. This is because the key can be automatically obtained from the key server through the communication terminal, and the key server is implemented, for example, in the center described above or individually.

  In an alternative embodiment, for payment for the playback of the media content of the media object, the amount allocated to this media object is prepaid and transferred to the communication terminal chip card, eg a SIM card (subscriber identity module). The stored amount is debited.

  In a variant embodiment, the number of times the media content of the media object has been played is counted at the communication terminal, and this number of times examined is forwarded to a license server, which is for example at the above-mentioned center or individually. To be implemented. This has the advantage that a license fee depending on the number of playbacks can be calculated thereby.

  In a variant embodiment, the dedicated third key is stored on the chip card of the communication terminal, which has the advantage that the user's dedicated key can be kept away from the communication terminal.

It is a block diagram which shows roughly the communication terminal which has a media reproduction module with which the communication terminal is connected with the center through the wireless network. FIG. 5 is a flow diagram schematically illustrating encryption and decryption of a media object with a first key, and encryption of the first key with a public second key and decryption of the first key with a dedicated third key.

  Next, an embodiment of the present invention will be described using an example. Examples of embodiments are illustrated in the accompanying drawings.

  In FIG. 1, reference numeral 1 denotes a communication terminal, which is connected by means of a suitable radio module 18, for example a mobile radio network for mobile phones, for example a GSM network, a UMTS network or another mobile radio network, a DAB radio network ( Digital voice network), satellite-based wireless network or wireless network 2 including another wireless network, digital data, in particular digital media objects such as software content, text content, graphic content, image content, audio A digital media object having content, video content, or combined multimedia content is received from the center 3 and the appropriate digital data is received. The memory 12 of the use, for example RAM (Random Access memory), on a hard storage disk, may be stored on a compact disc, or another writable data carrier. The writable data carrier can be implemented in the form of a chip card, for example a SIM card with an extended storage area or a chip card suitable for this purpose, which can be remoted, for example through a shooting location. A communication terminal 1 can be connected.

  It has to be mentioned here that the center 3 should not be connected directly to the wireless network 2 but that the center can be connected to the wireless network 2 through any other device not shown. The center 3 is, for example, a commercial communication server that can always use necessary software components and hardware components in order to transfer media objects directly or indirectly through the wireless network 2 to the communication terminal 1. For example, the center 3 includes a DAB transmitter (Digital Audio Broadcasting) or has an entrance to the DAB transmitter, or the center 3 includes a short message service center (SMSC) or short Having an entrance to the message service center, through which the digital data with the program, the respective short messages, for example SMS short messages or USSD short messages, are transferred to the corresponding radio module 18 of the communication terminal 1 Can do. The center 3 can receive the data of the radio module 18 in a short message, for example in an SMS short message or a USSD short message, for example through the short message service center described above. The center 3 can also be connected to the Internet, for example, where the communication terminal 1 can use the opportunity via an Internet service provider through a mobile radio network, for example a GSM network or a UMTS network. The key server 3 'and the license server 4 described later can be executed in the same manner as described for the center 3 in the center 3 or individually.

  As shown in FIG. 1, the communication terminal 1 includes at least one processor 11 and processing means 11 having data. The processor 11 is connected to a radio module 18 and the memory 12. The data received from the machine 18 can be filed in the memory 12 and the data stored in the memory 12 each time, especially the digital media object, can be retrieved and processed. The processor 11 can also fetch programmed software modules 121, 12, 123, and 124, which will be described later, in the memory 12, and execute the programmed software modules 121, 12, 123, and 124.

  The processor 11 is further connected to an operating element 15 such as a keyboard and a display 16 such as an LCD display (liquid crystal display) for receiving instructions and data from the user or data, information, in particular visual media content of media objects, and the user Display instructions for the to be visible.

  As shown in FIG. 2, the media object 6 includes media content 62 and object information 61 as described above. The object information 61 includes descriptions about the media object 6, for example, a price list for the media object 6, a display of the media object 6, for example, a title of a song or video, an object identification name of the media object 6, a media object 6 media types, media object 6 playback period, media object 6 short unencrypted playback sample, or one or more commentators and / or authors of media object 6. On top of that, the object information 61 includes description items that can be used as a reference for the media object 6, for example, a call number, a network address or a URL address (Universal Resource Locator) of the center 3. The media content of the media object 6 is encrypted in a compressed form, eg MPEG-3 (Moving Picture Expert Group) format or another suitable format, preferably with a first key assigned to the media object 6; It is preferably transferred to the communication terminal 1 and stored there. The assignment of the first key 7 to the media object 6 has the advantage that the media content 62 of each media object 6 can thus be encrypted with an appropriate key. The media object 6 is stored in the media content that has already been compressed and encrypted, for example, in the data server or the file server of the center 3, and the first key 7 assigned to the media object is the key described above. The server 3 'is stored so as to be accessible, and the key server 3' is executed as a programmed software module on the server of the center 3 or on a separate server. On top of that, the above-mentioned object information 61 can be referred to the first key 7 for decrypting the media object 6, for example, a call number, the network address or URL address of the key center 3 '. It is preferable to include (Universal Resource Locator).

  As shown in FIG. 2, the media content 62 of the media object 6 includes a key 7 assigned to the first media object 6 and a first encryption function executed at the center 3 as a programmed software function, for example. 70 to be encrypted. The encrypted media content 62 'is transferred to the communication terminal 1 as described above. The first key 7 is securely transferred by a key pair consisting of a public second key 9 and a dedicated third key 9 'assigned to the user, for example. The first key 7 is encrypted with the public second key 9 through, for example, a second encryption function 90, for example, a programmed software function in the center 3 or key server 3 '. The encrypted first key 7 ′ is transferred to the communication terminal 1 through the wireless network 2, for example, and is decrypted by the dedicated third key 9 ′ through the second decryption function 59. The encrypted first key 7 ′ or the decrypted first key 7 ″ is stored in the communication terminal 1, for example, in the chip card 5 of the communication terminal 1. On the chip card 5, at least the memory 12 shown in FIG. A part is present or cannot be seen from the outside by the decryption module 14 to be described later. When the decrypted first key 7 "is stored in the communication terminal 1, particularly the chip card 5, the storage area required for this is It should not be readable by Loser. The chip card 5 is, for example, a SIM card (subscriber identification module), on which, for example, one (or a plurality) of dedicated third keys 9 ′ are also stored. The encrypted first key 7 ′ or the decrypted first key 7 ″ and the dedicated third key 9 ′ are stored in the chip card 5 by separating the chip card 5 from the communication terminal 1. The advantage is that an unauthorized user cannot decrypt and play back the encrypted media content 62 'of the media object 6 stored in the terminal 1. The second decryption function 59 is, for example, one programmed software function. This is, for example, a software function that is stored in the chip card 5 and executed through the processor 11 such as the processor on the chip card 5. However, the second decryption function 59 can also be integrated into the decryption module 14. The public second key 9 is stored in a chip card 5 such as a SIM card, for example. The public second key 9 is also read by the chip card 5 by the center 3 or the key server 3 ', or in some cases by a TTP server (Trusted Third Party). You can order it.

  Decryption of the media content 62 'of the media object 6 is performed in the decryption module 14, which converts the media content 62' encrypted, transferred and stored in a compressed form into the media object 62 '. And decrypts the decrypted media content to the media playback module 13. The media playback module 13 decompresses the decrypted media object and forms the media format. The digital data contained therein may be converted into an analog signal depending on the situation, and the analog signal may be applied to an electroacoustic transducer 17 such as a loudspeaker or a headphone. And media playback module 1 Can be implemented on a signal processor suitable for this, for example as a programmable software module, or on a separate or common chip as an integrated switch network, where the electroacoustic transducer 17 is merely an example of a conversion. It should be noted that the media content 62 of the media object 6 can be played in various ways for the appropriate media depending on its media format, eg text, graphics, images, video, Media objects, such as visual reality sequences, can be displayed on the display 16 and played by light waves, for example, composite multimedia objects can be played by light waves and sound waves through many media.

  FIG. 2 can additionally provide a description of the usage conditions 8 for the media object 6 assigned to the key 7 by means of the first key 7, which is encrypted together with the key 7, for example. It is also shown that the data can be transferred to the communication terminal 1 in a decrypted state. Further, the description regarding the use condition 8 can be stored together with the corresponding encrypted first key 7 ′ or decrypted first key 7 ″. The use condition 8 is, for example, one of the media object 6. Includes license fees and / or price lists for replays that are times and / or multiple times but limited in time, possibly with a description of a limited period or limited number of replays.

  In the order module 121 shown in FIG. 1 described above, the user of the communication terminal 1 retrieves the unencrypted object information 61 related to the media object 6 from the center 3, displays it on the display 16, and operates the communication terminal 1. A brief reproduction of the encrypted playback sample that may be available, possibly by means of element 15, selects the desired media object by means of operating element 15, and a corresponding object order including at least one object identifier Is a programmable software module that enables the transmission of the The order module 121 is implemented, for example, in the form of a browser, for example as an Internet browser for direct access or based on WAP (Wireless Application Protocol).

  At the center 3, the received object order is stored, and the ordered media object 6 is transmitted by the center 3 to the communication terminal 1 when determined through the center 3. According to the present invention, the object order is received at the center 3, and a description regarding which media object 6 is available at which time determined by the center 3 is transmitted to the communication terminal 1. The order module 121 of the communication terminal 1 receives the time determined by the center 3 for transmission of the ordered media object 6, stores this, and automatically contacts the center 3 at the stored time. Then, the media object 6 that can be transferred at the time determined here is received. The point of time for transmission is determined by the center 3 so that the resources used at this time, for example, the capacity of the wireless network 2 or the data bank or the file server of the center 3 are used as optimally as possible. With the delivery of the media object 6, the first key 7 assigned to this media object can also be transmitted at the same time, or this key 7 can be transmitted separately as will be described later. The transmission of the ordered media object 6 can be carried out as a background process, where the ordered media object 6 is carried over a separate data channel, for example in parallel with a telephone call. It should be noted here that it may also be possible for the user to request that the ordered media object 6 be transmitted immediately, which can be connected for example by a higher rate corresponding rate model. It is.

  As an alternative to ordering the media object 6 by the order module 121 described above, the user can also reserve the media object 6, for example, in which case the user can specify the media object 6 he / she has specified, eg a specific Request the latest media object 6 with the artist's media content 62 until revoked by the drive of the center 3 with a limited time limit or without time limit.

  Due to the return channel to the center 3, the radio module 18 is free to use transmitters and other components that are suitable for communicating with the center 3 through the uncentered network 2, eg radio module 18 to communicate the functionality of the mobile radiotelephone module directly to the center 3 via, for example, a GSM network or a UMTS network, or to use the center 3 connected to the Internet through an Internet service provider, Use GSM modules or UMTS modules freely.

  The key retrieval module 122 is still another programmable software module, which is assigned to the media object 6 and necessary for decrypting the media content 62 'of the media object 6. It is possible to obtain the key 7 from the above-mentioned key server 3 ', in which case the key obtaining module 122 can transmit the above-mentioned public second key 9 to the key server 3' for this purpose. For this purpose, for example, for the media object 6 that has been ordered, the first key 7 automatically assigned to this media object 6 and this media that is transferred together with or separately from this encrypted key 7 ′. The order module 122 can use the key module 123 in order to obtain the description about the use condition 8 for the object 6, at this time, which is stored in the object information 61 of the media object 6. The description regarding the key server 3 'in charge is used. The assignment of the first key 7 to the media object 6 corresponds to, for example, the key retrieval module 122 transmits the object identifier stored by the order module 121 to the key server 3 'and is decrypted as described above. It can happen that the first key 7 ′ held by the key server 3 ′ in the transaction is assigned to the media object 6 during playback on the communication terminal 1. In yet another variant embodiment, the object identification name of the media object 6 to which the key 7 is assigned in the center 3 can be transferred to the communication terminal 1 as a component of the key 7 together with the first key 7.

  The object management module 124 is further programmed software that can be activated by the user of the communication terminal 1 using, for example, the operating element 15 to manage the media object 6 stored in the memory 12.・ It is a module. The object management module 124 is controlled by the user using the menu option displayed on the display 16 of the communication terminal 1, for example, by the communication terminal 1 operation element 15. Object management module 124 allows, for example, enumeration and classification of stored media objects 6 and selection of enumerated media objects 6 for playback and deletion thereof. The object management module 124 also includes a programmed transfer function, for example for transferring the selected media object 6 to the second communication terminal 1 via the radio module 18 or a wired or wireless interface not shown. In this transfer, the media content 62 of the media object 6 remains encrypted, and the key 7 assigned to the first media object is transferred from the key server 3 'by the second communication terminal 1 as described above. I have to order it. The above-mentioned radio interface is, for example, an infrared interface, such as a high-speed infrared (HSIR) interface or an IrDA interface (Infrared Data Association), an inductive interface such as a radio frequency identification (RFID) interface, a home RF (radio frequency) interface, a European digital cordless phone (DECT) interface or other cordless telecommunications system (CTS) interface, or a radio frequency radio interface, such as a so-called “Bluetooth interface”.

  If a media object 6 is selected for playback, the media content 62 'of the selected media object 6 and the encrypted first key 7 assigned to this media object 6 'Or the corresponding decrypted first key 7 "is delivered to the decryption module 14. Here, delivery of the decrypted first key 7" to the decryption module 14 causes the key 7 "to be read or copied illegally. It should be mentioned that, for example, only the encrypted first key 7 'can be stored in the communication terminal 1, for example in the chip card 5, Then, as described above, before delivery to the decryption module 14, it can be decrypted by the second decryption function 59. The decrypted first key 7 " Protected delivery to the reading module 14 causes the second decryption function 59 in the direct decryption module 14 to be unable to read the decrypted key 7 ″, for example by further encryption or from outside the decryption module 14. It happens by doing.

  Here, the media object 6 is a special mode that can be selected by the user, for example, and is not stored as an object when accepted in the communication terminal 1, but the media content 62 'is stored in a buffer memory for playback. Through the decryption module 14 (along with the encrypted first key 7 'assigned to this media object 6 or the corresponding decrypted first key 7 "), at this time the transfer rate of the wireless network 2 Or, if the capacity is sufficient, only this special stream format is feasible.

  There are various variations that allow prepayment or postpayment for the purchase and playback of the media object 6. For example, the above-described chip card 5 can include a prepaid amount 51 from which, for example, each media object 6 or each first key 7 is purchased and each time the media object 6 is played. Or each use of the first key 7 ″, for example, the amount corresponding to the price list included in the object information 61 or the use condition 8 described above is withdrawn. 123, a programmable software module, but this payment module 123 can be used for further payments through written accounting, for example, to a payment unit whose amount to be charged is not illustrated by the radio module 8, for example. For example, as part of a phone bill or through debiting a bank account As will be, it can also be implemented.

  For the settlement of the license fee relating to the copyright of the media object 6, the reproduction of each media object in the communication terminal 1 is calculated, for example, by a corresponding programmed software function in the license module 52. The number of reproductions stored in this field and confirmed in this cannot be overwritten by the user. This calculation is performed uniquely for each media object 6 every time the first key 7 ″ is used, for example, and this use is transmitted from the decryption module 14 to the license module 52. Periodically, for example, every day or whenever a predetermined payment period is reached, it is transmitted, for example by the radio module 18, to the license server 4 running in the center 3 or a separate computer for further processing.

  The amount to be settled can also be related to the effective playback duration so that it is only charged for the playback time actually performed by the user. In order to definitely determine this effective playback duration, a time reference that cannot be operated by the user of the communication terminal 1 and a protected memory area that cannot be overwritten by the user are required.

  The person skilled in the art will organize the storage of data, in particular media objects 6 and keys, and the storage of programmed software functions and modules in the communication terminal 1, ie dividing it into various storage means 12, programmed software It will be appreciated that there are different possibilities for allocating functions and software modules to the various processing means 11, ie various different possible processors, for their implementation.

  In addition to the payment for the key and / or the media object and the reproduction of this media object, the communication terminal 1 according to the invention is sold or rented, or for a conventional communication terminal, for example a mobile radiotelephone or It may also be of interest to sell an expansion module for a laptop computer or a palm computer, which expansion module replaces such a conventional communication terminal, for example in the form of a chip card, of the communication terminal 1 according to the invention. So that it can be installed. In addition, the software is installed in a conventional manner so that the data carrier in which the programmable software module is stored is expelled and the software module can be installed like the center 3, the key server 3 ', and the license server 4 described above. One can also be interested in controlling the communication server.

1 Communication terminal 2 Wireless network (mobile wireless network)
3 Center 3 'key server 4 License server 5 Chip card (SIM card)
6 Media object 7 1st key 7 'Encrypted 1st key 7 "Stored and decrypted 1st key 8 Terms of use (use rights, price list)
9 Public second key 9 'dedicated third key 11 Processing means (processor)
12 storage means 13 media playback module 14 decryption module 15 operation element 16 display 17 sound transducer 18 radio module 51 prepaid amount 52 license module 59 second decryption function 61 object information 62 media content 62 'encrypted Media Contents 70 First Encryption Function 90 Second Encryption Function 121 Order Module 122 Key Acquisition Module 123 Settlement Module 124 Object Management Module

Claims (22)

A method for ordering and delivering a digital media object (6) comprising:
An object order for a digital media object (6) including at least one object identifier is delivered by the mobile communication terminal (1) to the center (3) through the mobile radio network (2),
Descriptions regarding the point in time determined by the center (3) where the ordered media object (6) can be obtained are delivered from the center (3) to the communication terminal (1),
The time determined by the center (3) is stored in the communication terminal (1),
The communication terminal (1) automatically contacts the center (3) at the time of storage,
The media object (6) assigned to the object identifier is delivered from the center (3) to the communication terminal (1) through the wireless network (2), where it is stored in the memory (12),
A method in which the media playback module (13) of the communication terminal (1) plays back the media content (62) contained in the stored media object (6) through an appropriate medium. The media content (62) of the media object (6) is encrypted with the first key (7) assigned to this media object (6) before transmission to the communication terminal (1) And the media content (62) is decrypted by this first key (7 ") prior to playback by the media playback module (13).
The user of the first communication terminal (1) selects the media object (6) stored in the first communication terminal (1) and transfers it to the second communication terminal (1). 3. Method according to claim 2, characterized in that the media content (62) of the media object (6) remains encrypted.
The key (7) assigned to the media object (6) is transferred to the communication terminal (1) in an encrypted state by the public second key (9), where it is transferred by the dedicated third key (9 ′). 4. The decrypted key pair consisting of the public second key (9) and the dedicated third key (9 ′) is assigned to the user of the communication terminal (1). Method.
Individually or together with the first key (7) assigned to the media object (6), the description regarding the use condition (8) of the media object (6) is also transferred to the communication terminal (1). The method according to claim 4.
In order to decrypt the media content (62) of the media object (6), the decrypted first key (7 ") assigned to the media object (6) is protected and the communication terminal (1) 6. Method according to claim 4 or 5, characterized in that it is delivered to a decryption module (14).
7. A method according to any one of the preceding claims, characterized in that the media object (6) includes a description regarding the center (3) from which the media object (6) can be ordered.
8. The media object (6) according to any one of claims 2 to 7, characterized in that it contains a description relating to the key server (3 ') so that the encrypted first key (7') can be retrieved. The method according to one item.
The key obtaining module (122) of the communication terminal (1) automatically requests, receives and stores the encrypted first key (7 ') from the key server (3'). Item 9. The method according to Item 8.
2. A media object (6) comprising entries relating to the media content (62) of the media object (6), for example price lists, title entries, playback durations or playback samples. The method according to any one of 1 to 9.
In order to pay for the playback of the media content (62) of the media object (6), the amount allocated to the media object (6) is paid in advance to the chip card (5) of the communication terminal (1). 11. A method according to any one of the preceding claims, characterized in that a charge is made from a stored amount (51).
The number of reproductions of the media content (62) of the media object (6) is counted at the communication terminal (1), and the number of times is transmitted to the license server (4). The method according to any one of 1 to 11.
At least one storage means (12) in a communication terminal (1) capable of receiving extension data over the wireless network (2) and comprising at least one processor (11) and storage means (12) connected thereto Is large enough to store a digital media object (6) received through the wireless network (2), and the communication terminal (1) can communicate through the mobile wireless network (2). , The communication terminal (1) includes a programmable order module (121), which places an object order for a digital media object (6) including at least one object identifier through a mobile radio network (2). The communication terminal (1) is configured so that it can be delivered to (3). Includes A reproduction module (13), this module is configured to play through the media content (62) suitable media contained in one of the digital media objects (6),
The order module (121) is configured to receive and store the time when the ordered media object (6) determined by the center (3) and delivered to the communication terminal (1) becomes available. And the order module (121) automatically contacts the center (3) at the time it is stored, and is assigned to the object identifier from the center (3) through the wireless network (2). A communication terminal (1), characterized in that the media object (6) delivered to (1) is stored in a storage means (12).
A decryption module (14), which decrypts the encrypted media content (62 ') of the media object (6) with a first key (7) assigned to the media object (6); 14. Communication terminal (1) according to claim 13, characterized in that it is configured to decrypt by
A transfer function, which transfers the stored media object (6) to the second mobile communication terminal (1), in this case the media content (62 ′) of this media object (6) The communication terminal (1) according to claim 14, characterized in that is still encrypted.
A key obtaining module (122), which is configured to obtain the key (7) assigned to the media object (6) from the key server (3 ') through the mobile wireless network (2); The communication terminal (1) also includes a second decryption function (59), which decrypts the received first key (7 ′) encrypted by the public second key (9). It is configured to decrypt using the third key (9 ′), and a key pair consisting of the public second key (9) and the dedicated third key (9 ′) is assigned to the user of the communication terminal (1). Communication terminal (1) according to claim 14 or 15, characterized in that
The key obtaining module (122) also obtains the description concerning the use condition (8) of the media object (6) individually or together with the first key (7) assigned to the media object (6). The communication terminal (1) according to claim 16, wherein the communication terminal (1) is configured.
18. The second decryption function (59) is configured to deliver the decrypted first key (7 ″) to the decryption module (14) in a protected state. Communication terminal (1).
The key obtaining module (122) sends the encrypted first key (7 ′) to the key server (3 ′) based on the description regarding the key server (3 ′) included in the media object (6). The communication terminal (1) according to any one of claims 16 to 18, characterized in that the communication terminal (1) is configured to automatically obtain from the communication terminal.
The settlement module (123) includes a payment module (123), and when the media content (62) of the media object (6) is played, the settlement module (123) prepays the amount allocated to the media object (6). The communication terminal according to any one of claims 13 to 19, characterized in that it is configured to charge from the amount (51) stored in the chip card (5) of the communication terminal (1). (1).
The license module (52) includes the license module (52), which counts the number of times the media content (62) of the media object (6) is played in the communication terminal (1). The communication terminal (1) according to any one of claims 13 to 20, wherein the communication terminal (1) is configured to deliver to (4).
  The storage means (12) comprises at least one memory area on the chip card (5), and a dedicated third key (3 ') is stored in this secure memory area. The communication terminal (1) according to any one of 13 to 21.

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