CN100397904C - Data processing apparatus, data processing system, data processing method - Google Patents

Abstract

The invention provides a data processing device, which comprises a first encryption equipment to encrypt the descriptive information of scenes through a first key; a generation equipment to generate a secondary key by using the first key; a second encryption equipment to encrypt media stream by using the secondary key; an overlapping equipment to overlap the bit stream representing the encryption method of the first encryption equipment and the resultant bit stream generated by the first encryption equipment and the second encryption equipment, thus generating a bit steam; a transmitting equipment to transmit the bit stream of the overlapping equipment to a peripheral equipment. The data processing device and the processing method provided by the invention can protect the media in a scene.

Description

Data processing equipment, data handling system and data processing method

To be the application people be Canon Co., Ltd, the applying date the dividing an application for the application for a patent for invention of " data processing equipment, data handling system, data processing method and medium " that be January 25 calendar year 2001, denomination of invention to the application.

Technical field

The present invention relates to is being data processing equipment, data handling system and the data processing method that purpose is come the utilization of controlled target data under the situation of a plurality of target data information reproductions, according to the construction form of scene, with the intellectual property protection.

Background technology

In recent years, data to animated image and sound etc. are encoded, coded data is separately handled as target data, after these so-called multi-medium datas are made up it is transmitted as single bit stream, as such method, MPEG-4 (mpeg-4-) passes through ISO by standardization.In the receiving system (transcriber) of MPEG-4, for example, after being associated, sound and cartoon scene (scene) reproduce.In the MPEG4 system, owing to, weave into again after therefore being easy to one by one the bit stream that receives is separated into each target data with the characteristic of data as the target data use.But,,, be necessary to limit its use in order to protect copyright for the target data that copyright is arranged.

In the data flow of MPEG 4, different with in the past common media stream, can make several video scenes and video object data on single stream, receive transmission after the independence.Can make the several objects data on single stream, receive transmission after the independence similarly about sound.

Thereby synthesize the information that these target datas generate scenes as being used for, exist the BIFS (binary format of Binary Format for Scenes-scene) that has revised VRML (Virtual Reality Modeling Language-virtual reality modeling language).BIFS describes scene with 2 values, and according to the synthetic scene of this BIFS.Because each required target data carries out respectively being sent out after the forced coding one by one in scene is synthetic, therefore also decoded one by one in decoding one side, according to the description of BIFS, time shaft that each target data has and the time shaft in the reproducer are synthesized synchronously and export scene.

In addition, scene can constitute by different level.Fig. 1 illustrates the ideograph of one of them example.Suppose the occasion of a plurality of target datas that exist music, personage, captions and background.The encoder of MPEG-4 is encoded to each target data independently, the target data of each coding is carried out multiplexed, generates MPEG-4 stream.Decoder is separated into each target data with MPEG-4 stream, deciphers independently, synthetic decode results and output.Fig. 2 represents the schichtenaufbau of target data shown in Figure 1.

Like this, because the MPEG-4 reproducer synthesizes a plurality of target datas,, generation is limited necessity of its use therefore when the occasion that in any one target data, has intellectual property (for example copyright).According to this necessity, in MPEG-4, the intellectual property right management protection system that is called IPMP is used.By using the IPMP system to control to the utilization of each target data.

In existing IPMP system, in order to keep the big degree of freedom, accomplish to make target data and IPMP information independent in each target data comparably, and can control its utilization.But, in fact, not the independently utilization of each target data of control, but by being that unit controls its utilization with a plurality of target datas, like this, be expected to improve the efficient of the utilization control of target data.

In MPEG-4, can utilize with the control of scene unit, but the target data that comprises in the scene is many more, control it independently with target data unit and just utilize trouble more, therefore, wish the utilization of controlled target data effectively.

In MPEG-4, resemble that above-mentioned that works describes scene by different level.In this occasion, the scene number is many more, controls it independently with target data unit and utilizes the quite trouble that also just becomes, and in this, also wishes the utilization of controlled target data effectively.

Summary of the invention

From above-mentioned background as can be known, an order of the present invention provide can enough formation scenes target unit protect data processing equipment, data handling system and the data processing method of management effectively.

To achieve these goals, the invention provides a kind of data processing equipment, it is characterized in that, comprising: the 1st encryption device of scene description information being encrypted by 1 secondary key; Use described 1 secondary key to generate the generation equipment of 2 secondary keys; Use 2nd encryption device of described 2 secondary keys to media stream privacy; Thereby the bit stream of the encryption method by will representing described the 1st encryption device and the result's that the described the 1st and the 2nd encryption device is produced bit stream are piled up the overlay equipment that generates a bit stream; And the bit stream that described overlay equipment generates sent to the transmitting apparatus of external equipment, wherein, described generation equipment further uses described scene description information to generate described 2 secondary keys.

The present invention also provides a kind of data processing equipment, it is characterized in that, comprising: receive from the receiving equipment of the bit stream of external equipment transmission; Detect the checkout equipment of 1 secondary key; Use is by detected 1 secondary key of described checkout equipment, according to the decryption method that in the described bit stream that has received, is comprised, and the 1st readout equipment that the encrypted scene description information that is comprised in the described bit stream that has received is decrypted; Use described 1 secondary key to generate the generation equipment of 2 secondary keys; The 2nd readout equipment that uses 2 secondary keys that the encrypted Media Stream that is comprised in described bit stream is decrypted; And the reproducer of the Media Stream that generates according to described the 2nd readout equipment of scene description information regeneration that described the 1st readout equipment generates, wherein, described generation equipment further uses described scene description information to generate described 2 secondary keys.

The present invention also provides a kind of data handling system, and it is made of data sending device and data reproducing device, it is characterized in that, described data sending device comprises: the 1st encryption device of scene description information being encrypted by 1 secondary key; Use described 1 secondary key to generate the generation equipment of 2 secondary keys; The 2nd encryption device that uses described 2 secondary keys that Media Stream is encrypted; Thereby the result's that the bit stream of the encryption method by will representing described the 1st encryption device and the described the 1st and the 2nd encryption device produce bit stream is piled up the overlay equipment that generates a bit stream; And the bit stream that described overlay equipment produces sent to the transmitting apparatus of described data reproducing device, described data reproducing device comprises: the receiving equipment that receives the bit stream that sends from described transmitting apparatus; Detect the checkout equipment of 1 secondary key; Use is by detected 1 secondary key of described checkout equipment, the 1st readout equipment that the encrypted scene description information that is comprised in to the described bit stream that is receiving according to the decryption method that is comprised in the described bit stream that has received is decrypted; Use described 1 secondary key to generate the generation equipment of 2 secondary keys; Use described 2 secondary keys, the 2nd readout equipment that the encrypted Media Stream that is comprised is decrypted in described bit stream; And the reproducer of the Media Stream that generates according to described the 2nd readout equipment of scene description information regeneration that described the 1st readout equipment generates, wherein, the generation equipment of described data sending device further uses described scene description information to generate described 2 secondary keys, and the generation equipment of described data reproducing device further uses described scene description information to generate described 2 secondary keys.

The present invention also provides a kind of data processing method, it is characterized in that comprising: by 1 secondary key operation is encrypted in the 1st of scene description information encryption; Use described 1 secondary key to generate the generation operation of 2 secondary keys; The 2nd encryption operation of using described 2 secondary keys that Media Stream is encrypted; Thereby encrypt the result's of operation generation bit stream and be piled up the overlapping step that generates a bit stream by representing the described the 1st bit stream and the described the 1st and the 2nd of encrypting the encryption method in the operation; And the bit stream that described overlapping step produces sent to the transmission operation of external equipment, wherein, described generation operation further uses described scene description information to generate described 2 secondary keys.

The present invention also provides a kind of data processing method, it is characterized in that comprising: receive from the reception operation of the bit stream of external equipment transmission; Detect the detection operation of 1 secondary key; Use is by detected 1 secondary key of described detection operation, the 1st reads operation according to the decryption method that is comprised in the described bit stream that has received to what be included in that encrypted scene description information in the described bit stream that has received is decrypted; Use described 1 secondary key to generate the generation operation of 2 secondary keys; Use described 2 secondary keys the 2nd to read operation to what be included in that encrypted Media Stream in the described bit stream is decrypted; And read the scene description information that operation produces according to the described the 1st, and reproduce the described the 2nd reproduction operation of Media Stream of reading the generation of operation, wherein, described generation operation further uses described scene description information to generate described 2 secondary keys.

The present invention also provides a kind of data processing method of data handling system, described data handling system comprises data sending device and data reproducing device, it is characterized in that the data processing method of described dispensing device comprises: the 1st encrypt operation to what scene description information was encrypted by 1 secondary key; Use described 1 secondary key to generate the generation operation of 2 secondary keys; The 2nd encryption operation of using described 2 secondary keys that Media Stream is encrypted; Thereby encrypt the result's of operation generation bit stream and be piled up the overlapping step that generates a bit stream by representing the described the 1st bit stream and the described the 1st and the 2nd of encrypting the encryption method in the operation; And the bit stream that described overlapping step produces sent to the transmission operation of described data reproducing device, the data processing method of described data reproducing device comprises: the reception operation that receives the bit stream that sends from described dispensing device; Detect the detection operation of 1 secondary key; Use is by detected 1 secondary key of described detection operation; According to the decryption method that is included in the described bit stream that has received, the 1st read operation to what be included in that encrypted scene description information in the described bit stream that has received is decrypted; Use described 1 secondary key to generate the generation operation of 2 secondary keys; Use described 2 secondary keys the 2nd to read operation to what be included in that encrypted Media Stream in the described bit stream is decrypted; And read the reproduction operation that scene description information regeneration the described the 2nd that operation produces is read the Media Stream that operation produces according to the described the 1st, wherein, the generation operation of the data processing method of described dispensing device further uses described scene description information to generate described 2 secondary keys, and the generation operation of the data processing method of described data reproducing device further uses described scene description information to generate described 2 secondary keys.

For this reason, the invention provides a kind of data processing equipment, it is characterized in that, comprising: the 1st encryption device of scene description information being encrypted by 1 secondary key; Use described 1 secondary key to generate the generation equipment of 2 secondary keys; Use 2nd encryption device of described 2 secondary keys to media stream privacy; Thereby the bit stream of the encryption method by will representing described the 1st encryption device and the result's that the described the 1st and the 2nd encryption device is produced bit stream are piled up the overlay equipment that generates a bit stream; And the transmitting apparatus that the bit stream that described overlay equipment generates is sent to external equipment.

Described generation equipment preferably further uses scene description information to generate described 2 secondary keys.

In addition, described bit stream is preferably according to the bit stream of MPEG-4.

In addition, described scene description information is preferably according to the information of the BIFS of MPEG-4.

The present invention also provides a kind of data processing equipment, it is characterized in that, comprising: receive from the receiving equipment of the bit stream of external equipment transmission; Detect the checkout equipment of 1 secondary key; Use is by detected 1 secondary key of described checkout equipment, according to the decryption method that in the described bit stream that has received, is comprised, and the 1st readout equipment that the encrypted scene description information that is comprised in the described bit stream that has received is decrypted; Use described 1 secondary key to generate the generation equipment of 2 secondary keys; The 2nd readout equipment that uses 2 secondary keys that the encrypted Media Stream that is comprised in described bit stream is decrypted; And the reproducer of the Media Stream that generates according to described the 2nd readout equipment of the scene description information regeneration of described the 1st readout equipment.

Checkout equipment recited above preferably detects this 1 secondary key from the medium of storing described 1 secondary key.

Described generation equipment preferably further uses described scene description information to generate described 2 secondary keys.

Described bit stream is preferably according to the bit stream of MPEG-4.

In addition, so-called described scene description information is preferably according to the information of the BIFS of MPEG-4.

A kind of data handling system provided by the invention, it is made of data sending device and data reproducing device, it is characterized in that, and described data sending device comprises: the 1st encryption device of scene description information being encrypted by 1 secondary key; Use described 1 secondary key to generate the one-tenth generating apparatus of 2 secondary keys; The 2nd encryption device that uses described 2 secondary keys that Media Stream is encrypted; Thereby the bit stream of the encryption method by will representing described the 1st encryption device and the described the 1st and the result's of the 2nd encryption device bit stream be piled up the overlay equipment that generates a bit stream; And the bit stream that described overlay equipment generates sent to the transmitting apparatus of described data reproducing device, described data reproducing device comprises: the receiving equipment that receives the bit stream that sends from described dispensing device; Detect the checkout equipment of 1 secondary key; Use is by detected 1 secondary key of described checkout equipment, the 1st readout equipment that the encrypted scene description information that is comprised in to the described bit stream that is receiving according to the decryption method that is comprised in the described bit stream that has received is decrypted; Use described 1 secondary key to generate the generation equipment of 2 secondary keys; Use described 2 secondary keys, the 2nd readout equipment that the encrypted Media Stream that is comprised is decrypted in described bit stream; And the reproducer of the Media Stream that generates according to described the 2nd readout equipment of the scene description information regeneration of described the 1st readout equipment.

The invention provides a kind of data processing method, it is characterized in that comprising: operation is encrypted in the 1st of scene description information encryption by 1 secondary key; Use described 1 secondary key to generate the generation operation of 2 secondary keys; The 2nd encryption operation of using described 2 secondary keys that Media Stream is encrypted; By representing that thereby the described the 1st bit stream and the described the 1st and the 2nd bit stream of encrypting the result of operation of encrypting the encryption method in the operation is piled up the overlapping step that generates a bit stream; And the transmission operation that the bit stream of described overlapping step is sent to external equipment.

Described generation operation preferably further uses described scene description information to generate described the 2nd key.

In addition, described bit stream is preferably according to the bit stream of MPEG-4.

In addition, so-called described scene description information is preferably according to the BIFS information of MPEG 1.

The present invention also provides a kind of data processing method, it is characterized in that comprising: receive from the reception operation of the bit stream of external equipment transmission; Detect the detection operation of 1 secondary key; Use is by detected 1 secondary key of described detection operation, the 1st reads operation according to the decryption method that is comprised in the described bit stream that has received to what be included in that encrypted scene description information in the described bit stream that has received is decrypted; Use described 1 secondary key to generate the generation operation of 2 secondary keys; Use described 2 secondary keys the 2nd to read operation to what be included in that encrypted Media Stream in the described bit stream is decrypted; And, reproduce the described the 2nd reproduction operation of reading the Media Stream that operation produces according to the described the 1st scene description information of reading operation.

In described detection operation, preferably detect this 1 secondary key from the medium of storing described 1 secondary key.

In addition, described generation operation preferably re-uses described scene description information and generates described 2 secondary keys.

In addition, described bit stream is preferably according to the bit stream of MPEG-4.

In addition, so-called described scene description information is preferably according to the BIFS information of MPEG-4.

The data processing method of a kind of data handling system provided by the invention, described data handling system comprises data sending device and data reproducing device, it is characterized in that the data processing method of described dispensing device comprises: the 1st encrypt operation to what scene description information was encrypted by 1 secondary key; Use described 1 secondary key to generate the generation operation of 2 secondary keys; The 2nd encryption operation of using described 2 secondary keys that Media Stream is encrypted; By representing that thereby the described the 1st bit stream and the described the 1st and the 2nd bit stream of encrypting the result of operation of encrypting the encryption method in the operation is piled up the overlapping step that generates a bit stream; And the bit stream that described overlapping step generates sent to the transmission operation of described data reproducing device, the data processing method of described data reproducing device comprises: the reception operation that receives the bit stream that sends from described dispensing device; Detect the detection operation of 1 secondary key; Use is by detected 1 secondary key of described detection operation; According to the decryption method that is included in the described bit stream that has received, the 1st read operation to what be included in that encrypted scene description information in the described bit stream that has received is decrypted; Use described 1 secondary key to generate the generation operation of 2 secondary keys; Use described 2 secondary keys the 2nd to read operation to what be included in that encrypted Media Stream in the described bit stream is decrypted; And the reproduction operation of reading the Media Stream of operation according to the described the 1st scene description information regeneration the described the 2nd of reading operation.

Another data processing method of the present invention, reproduce have respectively decide a plurality of object flows of information, it is characterized in that, it possesses following steps: the management information extraction step that extracts the management information be used to control the layering that could utilize each target from the input data, according to the management information that in described management information extraction step, is extracted, judge whether to forbid utilizing the upper determining step of the upper target of gazing at target, judged result according to described upper determining step, in the occasion of forbidding utilizing the upper target of gazing at target, forbid utilizing this to gaze at the controlled step of target.

Described object flow is preferably according to the bit stream of MPEG-4.

Described management information preferably is included in the information among the IPMP.

Described management information is preferably encrypted.

The management information of other level of defining the level is preferably encrypted.

After preferably being associated with each object flow respectively, described management information managed.

Described management information preferably by in management information, comprise point to other management information pointer information by layering.

Described management information is preferably by comprising other management information by layering in management information.

The management information that described management information preferably flows for scene description information (BIFS).

According to described scene description information flow, preferably upgrade the control method of utilizing of object flow during each more new scene.

Another data processing equipment of the present invention, reproduce have respectively decide a plurality of object flows of information, it is characterized in that, it possesses following equipment: the management information extracting device that extracts the management information be used to control the layering that could utilize each target from the input data, according to the management information that in described management information extracting device, is extracted, judge whether to forbid utilizing the upper judgment device of the upper target of gazing at target, according to the judged result of above-mentioned upper judgment device, in the occasion of forbidding utilizing the upper target of gazing at target, forbid utilizing this to gaze at the control appliance of target.

In addition, described object flow is preferably according to the bit stream of MPEG-4.

In addition, described management information preferably is included in the information in the IPMP stream.

In addition, described management information is preferably encrypted.

In addition, the management information of other level of defining the level is preferably encrypted.

In addition, described management information preferably manages respectively with after each object flow is associated.

In addition, described management information is preferably by comprise the pointer information that points to other management information in management information and by layering.

In addition, described management information preferably by in management information, comprising other management information by layering.

In addition, described management information is preferably for the management information of scene description information (BIFS) stream.

In addition, according to described scene description information flow, when each more new scene, preferably upgrade the control method of utilizing of object flow.

In addition, medium of the present invention is being stored the program software of carrying out above-mentioned data processing method.

Description of drawings

Fig. 1 is the figure that the summary of expression MPEG-4 coded system constitutes.

Fig. 2 is the ideograph that the target data in the expression MPEG-4 coded system constitutes.

Fig. 3 is that expression relates to the block diagram that the summary of the data processing equipment of the 1st embodiment of the present invention constitutes.

Fig. 4 is the figure that is used for illustrating that the decoding of the target data under the control of IPMP stream is handled.

Fig. 5 is the ideograph that scene constitutes example.

Fig. 6 is the ideograph of the formation example of the expression IPMP stream corresponding with Fig. 5.

Fig. 7 is the flow chart that is illustrated in the processing action of the IPMP stream among the 1st embodiment.

Fig. 8 is the ideograph that the target data of expression scene #1 constitutes.

Fig. 9 is the ideograph that the target data of expression scene #2 constitutes.

Figure 10 is the ideograph of the formation of the expression IPMP information corresponding with the scene #1 of Fig. 8.

Figure 11 is the ideograph of the formation of the expression IPMP information corresponding with the scene #2 of Fig. 9.

Figure 12 is the figure of the formation example of the expression UPMP stream corresponding with Figure 10 and Figure 11.

Figure 13 is other the figure of formation example of the expression IPMP corresponding with Figure 10 and Figure 11 stream.

Figure 14 is the block diagram of detailed formation that expression relates to the data processing equipment of the 1st embodiment of the present invention.

Figure 15 is other block diagram that constitutes in detail of the expression data processing equipment that relates to the 1st embodiment of the present invention.

Figure 16 is the ideograph that scene constitutes example.

Figure 17 is the ideograph of the formation example of the expression IPMP information corresponding with Figure 16.

Figure 18 is the figure of the formation example of the expression IPMP stream corresponding with Figure 17.

Figure 19 is the figure of other formation example of the expression IPMP stream corresponding with Figure 17.

Figure 20 is the figure of the formation example of the expression IPMP stream corresponding with encryption.

Figure 21 is the figure of other formation example of the expression IPMP stream corresponding with encryption.

Figure 22 be expression with the 2nd embodiment in Figure 20 and the flow chart that moves of the processing of the corresponding IPMP of Figure 21 stream.

Figure 23 is the block diagram of formation that expression relates to the data processing equipment of the 2nd embodiment of the present invention.

Figure 24 is that expression relates to the block diagram that the inside of the data sending device of the 3rd embodiment of the present invention constitutes.

Figure 25 is the block diagram that the processing of each inscape of expression Figure 24 on function is moved.

Figure 26 is the flow chart of the data processing of expression Figure 24.

Figure 27 is the figure of the bit stream of explanation the 3rd embodiment.

Figure 28 is that expression relates to the block diagram that the inside of the data reproducing device of the 3rd embodiment of the present invention constitutes.

Figure 29 is the figure of the tree-like information of expression scene.

Figure 30 is the block diagram that the processing of each inscape of expression Figure 28 on function is moved.

Figure 31 is the flow chart of the data processing of expression Figure 28.

Figure 32 represents to relate to the block diagram of the data reproducing device of the 4th embodiment of the present invention.

Figure 33 is the figure of an example of expression scene.

Figure 34 is the figure of the tree-like information of the tree-like information of expression protection scene and non-protection scene.

Figure 35 is the figure of reproduction (rendering) result among expression Figure 34.

Figure 36 is the structural map that expression mixes the bit stream of scene.

Embodiment

Example 1

Below, with reference to accompanying drawing, describe the 1st embodiment of the present invention in detail.

The summary that Fig. 3 relates to the data processing equipment of embodiments of the invention constitutes block diagram.

In Fig. 3, transmission line 10 for example is made up of diverse network and computer etc.MPEG-4 flows through and is input to the multichannel distributor circuit 14 of transcriber 12 by transmission lines 10.In addition, transmission lines 10 can also comprise outside the data transmission lines and the reproducing mechanism of the recording medium that is called CD-ROM, DVD-ROM and DVD-RAM or the interface of transcriber.

Multichannel distributor circuit 14 will be separated into scene description data, animated image target data, sound objects data, goal description data and control data (IPMP information described later) from the MPEG-4 stream of transmission line 10 inputs, to supply with respectively corresponding to scene description data, animated image target data, sound objects data and goal description data synchronization layer 16,18,20,22, and with control data (IPMP information) supply IPMP control device 24.

MPEG-4 stream comprises with respect to each target datas such as sound that constitutes scene and animations, needed information, i.e. IPMP information when the reproduction that control intellectual property (for example copyright) etc. should be protected.IPMP information is attached on the IPMP stream, IPMP stream equally is attached to transmission on the MPEG-4 stream with other target.

The sound objects data for example use high efficiency coded systems such as well-known CELP (prediction of Code Excite LinePrediction-code exciting circuit) coding or TwinVQ (Transform domainWeighted Interleave Vector Quantization-transform domain weighting intersection vector quantization) coding to be encoded.The animated image target data for example is encoded expeditiously with well-known MPEG-4 mode or H-263 mode.Scene description data comprises graph data.

Each layer, sync 16,18,20,22 make scene description data, sound objects data, animated image target data and goal description data be supplied with decoding circuit 26 by synchronous back in time according to being called the temporal information that is attached to the time mark on the MPEG-4 stream, 28,30,32.IPMP control device 24 is according to from the implementation that 26～32 data are supplied with and the decoding of decoding circuit 26～32 is moved from layer, sync 16～22 to decoding circuit of the IPMP information Control of multichannel distributor circuit 14 (/ stop).Details is narrated in the back, but IPMP control device 24, for example as shown in Figure 4, the reproduction that resembles target data #2 stops, the reproduction of target data #3 stops, the reproduction of target data #3 begins and the reproduction of target data #2 begin in each target data independence and control its utilization.

In addition, in the present embodiment, for sound objects data, animated image target data and goal description data, even a plurality of mutual different types of target datas exist in MPEG-4 stream respectively, also to prepare a plurality of layer, sync 18,20,22 and decoding circuit 28 respectively, 30,32 so that can decipher.

By decoding circuit 26,28, scene description data, sound objects data, animated image target data and the goal description data of 30,32 decodings are added in the scene combiner circuit 34.To from decoding circuit 28,30,32 decoded sound objects data, animation target data and goal description data are synthesized and graphics process according to the scene description data of being deciphered in scene description decoding circuit 26 for scene combiner circuit 34.The final data row that obtain like this are supplied to the output equipment 36 of display and print apparatus, and make it visual.

MPEG-4 stream is made up of scene description data, animated image target data, sound objects data, goal description data and IPMP stream etc. as what illustrated in front.Multichannel distributor circuit 14 separates each target data.The IPMP stream that is separated by multichannel distributor circuit 14 is stored in the memory of IPMP control device 24, and afterwards, IPMP information is read from this memory, and takes out control information from IPMP information.According to this control information, control the action (reproduce beginning and stop etc.) of the reproduction series of each target data.

IPMP information can be categorized into IPMP information for scene description data (below, be called the IPMP information that scene is used) and for the IPMP information of the target data the IPMP information of using except that scene description (below, be called the IPMP information that target is used.)。In addition, scene is made up of more than one target data, as the front has illustrated, can consider to resemble layered structure as shown in Figure 5.Because target data has layered structure, therefore also can have identical as shown in Figure 6 layered structure with its paired IPMP information.

In the present embodiment, in IPMP information, have layered structure, and make IPMP information layered according to the construction form of target data.Then, the IPMP information by layering makes the control of utilization of construction form of response target data become possibility.

With reference to Fig. 7, the action of the IPMP control device 24 in the present embodiment is described.

Fig. 7 represents to receive the action flow chart of IPMP control device 24 of the occasion of the MPEG-4 stream that comprises IPMP stream.

At first in step S1, IPMP stream is stored in the memory of IPMP control device 24, and whether investigation comprises IPMP information in this IPMP stream.

In described memory when not comprising IPMP when stream, with regard to the action of End IP MP control device 24.For example, in the occasion of the MPEG-4 stream that does not comprise IPMP stream, IPMP control device 24 is handled with regard to End IP MP.Therefore, might freely utilize target data.

In step S1, in the occasion that IPMP information is arranged, program will enter step S2.

In step S2, investigation is at the state that utilizes of the target data of the upper level shown in the described IPMP information.Occasion in the data that allow to utilize upper level just enters step S3, just advances to step S5 in the occasion that does not allow to utilize.

In step S3, whether investigation IPMP information comprises the control information of the utilization of its target data of relevant controlling.

In step S3, the occasion allowing to utilize just advances to step S4, and the occasion not allowing to utilize just advances to step S5.

In step S4, utilize target data corresponding to described IPMP information.

In step S5, forbid utilizing target data corresponding to described IPMP information.

In step S6, judge whether described IPMP information comprises the IPMP information of the next level.In step S6, in the occasion of the IPMP information that does not comprise the next level, the later step of step S1 repeatedly just.In the occasion of the IPMP information that comprises the next level, the IPMP information of the next level is packed in the memory of IPMP control device 24, and the later step of step S2 repeatedly.That is, about belonging to the target of the level below 1 section, judge and to utilize, and control utilization according to its result by the control information of IPMP information.

By above program is carried out in each scene repeatedly, just can be according to the utilization of the construction form controlled target of target data.

Secondly, the control of the target exploitation of the construction form in the response present embodiment is described.Suppose that MPEG-4 stream is made of 2 scenes of continuous scene #1 and scene #2.

Fig. 8 represents the ideograph of the construction form of scene #1, and Fig. 9 represents the ideograph of the construction form of scene #2.

Scene #1 is made up of target data #1 and target data #2, and scene #2 is made up of target data #3 and target data #4.

Figure 10 represents the ideograph for the construction form of the IPMP information of scene #1, and Figure 11 represents the ideograph for the construction form of the IPMP information of scene #2.

The IPMP information that IPMP information that the IPMP information that scene #1 uses is used by target #1 and target #2 use is formed, and the IPMP information that IPMP information that the IPMP information that scene #2 uses is used by target data #3 and target data #4 use is formed.

Figure 12 represents an example of the formation of IPMP stream.The IPMP information that the IPMP information that IPMP stream is used by scene #1, the IPMP information that target #1 uses, IPMP information that target #2 uses, IPMP information that scene #2 uses, IPMP information that target #3 uses and target #4 use is formed.The IPMP information that scene #1 uses possesses the pointer of the IPMP information that definite object #1 uses and the pointer of the information that definite object #2 uses, and the IPMP information that scene #2 uses possesses the pointer of the IPMP information that definite object #3 uses and the pointer of the IPMP information that definite object #4 uses.Make IPMP information layered by these pointers.

Figure 13 represents other example of the formation of IPMP stream.In this embodiment, the IPMP information that IPMP information that IPMP stream is used by scene #1 and scene #2 use is formed, the IPMP information that scene #1 uses comprises the IPMP information that IPMP information that target #1 uses and target #2 use, and the IPMP information that scene #2 uses comprises the IPMP information that IPMP information that target #3 uses and target #4 use.With such formation, also can make IPMP information layered.

Figure 14 represents to make the formation block diagram of the data processing equipment that the part of IPMP control device at length is illustrated.

In Figure 14, the 40th, the multichannel distributor circuit, 42a, 42b are layer, sync, and 44a, 44b utilize control circuit, and 46a, 46b are the target decoding circuits, the 48th, scene combiner circuit, the 50th, IPMP control device.

IPMP control device 50 possess storing IP MP stream memory 52, from memory 52 extract the IPMP information IPMP information extraction circuit 54, utilize situation check circuit 56, control information extraction circuit 58 and IPMP information check circuit 60.In addition, as target 2 systems of having deciphered serial illustration, still not limited certainly in Figure 14, also can be 3 more than the system.

Below, specifically describe each inscape of Figure 14.

Multichannel distributor circuit 40 is separated into scene description data, animated image target data, sound objects data, goal description data and IPMP stream etc. with the MPEG-4 stream of input, scene description data, animated image target data, sound objects data and goal description data are supplied with layer, sync 42a, 42b, and IPMP stream is supplied with IPMP control device 50.

According to time mark, layer, sync 42a, 42b make each target data synchronous on time shaft.

Utilize control circuit 44a, 44b basis respectively decoding circuit 46a, 46b to be supplied with in the output of layer, sync 42a, 42b selectively, thus, control the utilization of each target from the control information of the control information extraction circuit 58 of IPMP control device 50.

Target decoding circuit 46a, 46b are applied to scene combiner circuit 48 with the data of input after the i.e. target data of the coding decoding.

Scene combiner circuit 48 synthesizes the output of decoding circuit 46a, 46b according to decoded scene description data and they is carried out graphics process.

Memory 52 temporary transient storages are from the IPMP stream of multichannel distributor circuit 40.

Extract IPMP information in the IPMP stream of IPMP information extraction circuit 54 from be stored in memory 52.In the occasion that can not extract IPMP information from the stream of the IPMP being stored in memory 52, IPMP control device 50 will stop utilizing control and treatment.

Utilize situation check circuit 56 from IPMP information, check upper level target data utilize situation, in the occasion that can utilize, IPMP information is outputed to control information extraction circuit 58, in unavailable occasion, IPMP control device 50 will be forbidden the utilization of the target data corresponding with described IPMP information.

Control information extraction circuit 58 extracts control information from IPMP information, and the control information of extracting is applied to utilizes control circuit 44a, 44b.

IPMP information check circuit 60 checks whether the IPMP information comprise the IPMP information of the next level, in the occasion that comprises, the IPMP information of the next level is outputed to control information draw-out device 58.

Specifically, in the IPMP of Figure 12 stream, allow the occasion of the IPMP information that IPMP information that scene #1 uses and scene #2 use, with the action of the data processing of target data #1, #2, #3, #4 and flow process comparative illustration IPMP control device 50 shown in Figure 7.

Output to after the IPMP information extraction circuit 54 IPMP information that extraction scene #1 uses from the IPMP stream of memory 52 and utilize situation check circuit 56 (step S1).

Because the upper level target data of the IPMP information that scene #1 uses does not exist, therefore, the IPMP information of utilizing situation check circuit 56 that scene #1 is used outputs to control information extraction circuit 58 (step S2).

Control information extraction circuit 58 extracts control information from the IPMP information of scene 1 usefulness, according to control device 44a, the 44b of this control information control utilization, and the utilization (S3, S4, S5) of the target data of control correspondence.In available occasion, utilize the data of control circuit 44a, 144b motor synchronizing in the future layer 42a, 42b to supply with target code translator 46a, 46b (step S4).In the occasion that can not utilize, the data of control device 44a, the 44b of utilization motor synchronizing in the future layer 42a, 42b are not supplied with target code translator 46a, 46b (step S5).

As the IPMP information of the next level, IPMP information check circuit 60 detects IPMP information that target #1 use and to utilizing 56 outputs (step S6, S7) of situation check circuit.

Since with allow to utilize as the corresponding target data of the scene #1 of the upper level of target data #1, therefore the IPMP information of utilizing situation check circuit 56 that target # is used outputs to control information extraction circuit 58 (step S2).Control information extraction circuit 58 extracts control information from the IPMP information that target #1 uses, utilize control circuit 44a, 44b according to this control information control, and the utilization (step S3, S4, S5) of the target data #1 of control correspondence.

As the IPMP information of the next level, IPMP information check circuit 60 detects the IPMP information that target #2 uses, and to utilizing 56 outputs (step S6, S7) of situation check circuit.

Because allow to be utilized corresponding to the target data as the scene #1 of the upper level of target data #2, therefore the IPMP information of utilizing situation check circuit 56 that target #2 is used outputs to control information extraction circuit 58 (step S2).Control information extraction circuit 58 extracts control information from the IPMP information that target #2 uses, according to this control information control utilize () control circuit 44a, 44b, and the utilization (step S3, S4, S5) of the corresponding target data #2 of control.

Therefore IPMP information check circuit 60 transfers to IPMP information extraction circuit 54 (step S6) with processing owing to then do not detect IPMP information.

IPMP information extraction circuit 54 extracts from the next IPMP information of memory 52, promptly, the IPMP information used of the scene #2 of next scene, and output to and utilize situation check circuit 56 (step S1).Because the upper level target data of the IPMP information that scene #2 uses does not exist, therefore the IPMP information of utilizing situation check circuit 56 that scene #2 is used outputs to control information extraction circuit 58 (step S2).Control information extraction circuit 58 extracts control information from the IPMP information that scene #2 uses, utilize control circuit 44a, 44b according to this control information control, and the utilization (S3, S4, S5) of the target data of control correspondence.

As the IPMP information of the next level, IPMP information check circuit 60 is checked the IPMP information that target #3 uses, and to utilizing 56 outputs (step S6, S7) of situation check circuit.

Because allow to be utilized corresponding to the target data as the scene #2 of the upper level of target data #3, therefore the IPMP information of utilizing situation check circuit 56 that target #3 is used outputs to control information extraction circuit 58 (step S2).Control information extraction circuit 58 extracts control information from the IPMP information that target #3 uses, utilize control circuit 44a, 44b according to this control information control, and the utilization (step S3, S4, S5) of the target data #3 of control correspondence.

As the IPMP information of the next level, IPMP information check circuit 60 detects the IPMP information that target #4 uses, and to utilizing 56 outputs (step S6, S7) of situation check circuit.

Because allow to be utilized corresponding to the target data as the scene #1 of the upper level of target data #4, therefore the IPMP information of utilizing situation check circuit 56 that target #4 is used outputs to control information extraction circuit 58 (step S2).Control information extraction circuit 58 extracts control information from the IPMP information that target #4 uses, utilize control circuit 44a, 44b according to this control information control, and the utilization (step S3, S4, S5) of the target data #4 of control correspondence.

Because IPMP information check circuit 60 is not checked next IPMP information, therefore finish to utilize the processing (step S6, S7) of control.

In addition, in Figure 14, by with flow chart shown in Figure 5 contrast, constitute such pie graph IPMP control device 50 be shown with understanding easily.As shown in Figure 14, in the occasion of feedback data, when each square frame is handled side by side,, therefore must handle one by one each square frame with producing the conflict of data and synchronous problem.In contrast, the target data by investigating upper level in the moment of having extracted IPMP information utilize situation, and before available occasion investigation hierarchical information earlier, just can eliminate the feedback of data.To change the formation example like this and be shown in Figure 15.In addition, in Figure 15, with the additional same-sign of identical element shown in Figure 14.

In the data processing equipment of Figure 15, the target data of the upper level of IPMP information check extraction circuit 62 investigation of IPMP control device 50a utilize situation, in available occasion, in the schichtenaufbau of checking IPMP information, in turn IPMP information is outputed to control information extraction circuit 64.Control information extraction circuit 64 is identical with control information extraction circuit 58, utilizes control circuit 44a, 44b according to the control of importing, control.

Like this, the utilization that utilizes the target data of the next level of control after the situation of the target data of upper level by inquiry just can be controlled in the utilization that each level carry out target data.In other words, not only by be included in IPMP information the utilization of control information controlled target data, the utilization that utilizes situation controlled target data of target data that also can be by upper level.Even be not utilized the target data of the next level of control, also can forbid the utilization of these data in the forbidden occasion of utilizing of the target data of upper level.

In the occasion as the feature of MPEG-4 " target data is sticked on the target data ", this is very effective.Consider that the target data that can utilize, be stuck in the target data of pasting is to forbid the occasion utilized, therefore to consider such situation, promptly only in the utilization control of IPMP information, for such occasion, in constituting, scene will produce contradiction, in the worst occasion, the MPEG-4 system can go down.But, in the present embodiment, in such occasion, by consider target data utilize form after generate IPMP information, according to the utilization of these IPMP information Control target datas, also can take appropriate countermeasure.Specifically, can suppose that the target data that is stuck is upper level, and the target data of pasting is the next level.At this moment, when the target data that only is stuck can be utilized, the target data of stickup just can be utilized.

Here, other example that level is constituted describes.

As previously mentioned, the scene with MPEG-4 formation level is possible.The scene construction form of Figure 16 representational level.

In example shown in Figure 16, scene #1 is made up of target data #1 and scene #2, and scene #2 is made up of target data #2.Figure 17 represents to constitute with scene shown in Figure 16 the formation example of corresponding IPMP information.The IPMP information that IPMP information that the IPMP information that scene #1 uses is used by target #1 and scene #2 use is formed, and the IPMP information that scene #2 uses is made up of the IPMP information that target #2 uses.

Figure 18 represents the formation example for the IPMP stream of the formation example of IPMP information shown in Figure 17.In this example, the IPMP information that the IPMP information that IPMP stream is used by scene #1, the IPMP information that target #1 uses, IPMP information that scene #2 uses and target #2 use is formed, the IPMP information that scene #1 uses comprises the pointer of the IPMP information that definite object #1 uses and points to the pointer of the IPMP information that scene #2 uses, and the IPMP information that scene #2 uses comprises the pointer of the IPMP information that definite object #2 uses.Thus, just can make IPMP information layered.

Figure 19 represents other formation example of IPMP stream.In this embodiment, do not utilize pointer.IPMP stream is made up of the IPMP information that scene #1 uses, and the IPMP information that this scene #1 uses comprises the IPMP information that IPMP information that target #1 uses and scene #2 use, and the IPMP information that scene #2 uses comprises the IPMP information that target #2 uses.Also can make IPMP information layered with such formation.In this constitutes, the IPMP information of using IPMP information that scene uses and target to use equally.

Formation shown in Figure 14 is for Figure 16 and schichtenaufbau shown in Figure 17, the utilization of each target of program control that flow chart that can be enough with shown in Figure 7 is identical.With reference to inscape shown in Figure 14 and each step of Fig. 7, the action of controlling for the utilization of Figure 16 and schichtenaufbau shown in Figure 17 be described.In addition, suppose the IPMP information that allows IPMP information that the scene #1 among Figure 17 uses and scene #2 to use in the explanation here.

Multichannel distributor circuit 40 is separated in the IPMP stream that is comprised in the MPEG-4 stream, and it is outputed to IPMP control device 50.Memory 52 temporary transient storages are from the IPMP stream of multichannel distributor circuit 40.

IPMP information extraction circuit 54 extracts the IPMP information that scene #1 uses from the IPMP of memory 52 stream, and outputs to and utilize situation check circuit 56 (step S1).Because the target data of the upper level of the IPMP information that scene #1 uses does not exist, therefore the IPMP information of utilizing situation check circuit 56 that scene #1 is used outputs to control information extraction circuit 58 (step S2).

Control information extraction circuit 58 extracts control information from the IPMP information that scene #1 uses, utilize control circuit 44a, 44b according to this control information control, and the utilization (step S3, S4, S5) of the target data of control correspondence.

As the IPMP information of the next level, IPMP information check circuit 60 is checked the IPMP information that target #1 uses, and to utilizing 56 outputs (step S6, S7) of situation check circuit.

Because allow to be utilized corresponding to the target data as the scene #1 of the upper level of target data #1, therefore the IPMP information of utilizing situation check circuit 56 that target #1 is used outputs to control information extraction circuit 58 (step S2).Control information extraction circuit 58 extracts control information from the IPMP information that target #1 uses, utilize control circuit 44a, 44b according to this control information control, and the utilization (step S3, S4, S5) of the target data #1 of control correspondence.

As the IPMP information of the next level, IPMP information check circuit 60 is checked the IPMP information that scene #2 uses, and to utilizing 56 outputs (step S6, S7) of situation check circuit.Owing to allow to be utilized corresponding to the target data as the scene #1 of the upper level of scene #2, therefore the IPMP information of utilizing situation check circuit 56 that scene #2 is used outputs to control information extraction circuit 58 (step S2).The IPMP information extraction control information that control information extraction circuit 58 is used from scene #2 utilizes control device 44a, 44b according to this control information control, and the utilization (step S3, S4, S5) of the target data of control correspondence.

As the IPMP information of the next level, IPMP information check circuit 60 is checked the IPMP information that target #2 uses, and to utilizing 56 outputs (step S6, S7) of situation check circuit.

Because allow to be utilized corresponding to the target data as the scene #2 of the upper level of target data #2, therefore the IPMP information of utilizing situation check circuit 56 that target #2 is used outputs to control information extraction circuit 58 (step S2).Control information extraction circuit 58 extracts control information from the IPMP information that target #2 uses, utilize control circuit 44a, 244b according to this control information control, and the utilization (step S3, S4, S5) of the target data #2 of control correspondence.

Because IPMP information check circuit 60 does not detect IPMP information below, therefore IPMP information extraction circuit 54 (step S6) is transferred in processing.

Above processing is the processing to some scenes, and the such sub-scene of each more new scene #2 constitutes, and uses with the identical method that the front has illustrated and upgrades utilization control.

Like this, in the present embodiment, even for the scene of level constitute also can the controlled target data utilization.

The occasion of the utilization control of the target data in scene and Fig. 5 and schichtenaufbau shown in Figure 6 is identical, but by the circular treatment to each scene, in the scene structure of layering, equally also can control the utilization of the target data of each scene.

Example 2

Next, the formation example that can control to the IPMP of the access of IPMP information stream is described.Figure 20 represent to possess accessing control function IPMP stream the 1st constitute example.Figure 20 constitutes with scene shown in Figure 8 and IPMP level shown in Figure 10 constitutes corresponding.

In Figure 20, the IPMP information that the IPMP information that IPMP stream is used by scene #1, the IPMP information that encrypted target #1 uses and encrypted target #2 use is formed.The IPMP information that scene #1 uses by generation be used to remove encrypted secret key information License Info, point to encrypt the pointer of the IPMP information that target #1 uses and point to the pointer of encrypting the IPMP information that target #2 uses and form.By with pin mode combination, make access control become possibility to the IPMP information of target #1 and target #2.

Figure 21 represent to possess accessing control function IPMP stream the 2nd constitute example.

Among Figure 21, IPMP stream is made up of the IPMP information that scene #1 uses.The IPMP information that scene #1 uses by License Info, encrypt the IPMP information that target #1 uses and encrypt the IPMP information that target #2 uses and form.License Info is possessing the occasion of reading key of encrypting the IPMP information that target #1 uses and encrypting the IPMP information that target #2 uses, can be to encrypting the IPMP information that target #1 uses and encrypting the IPMP information that target #2 uses and read.

Figure 22 is the flow chart of the processing of the expression IPMP stream that has Figure 20 and accessing control function shown in Figure 21.

At first in step S11, be stored in the memory of IPMP control device from the IPMP stream that comes out from the MPEG-4 flow point.Judge in the stored IPMP stream and whether comprise IPMP information.

In step S11, in the occasion that does not comprise IPMP information, with regard to the processing of End IP MP control.In other words, being not comprise under the situations such as occasion of MPEG-4 stream of IPMP stream, can freely utilize whole target datas.

On the other hand, in step S11, in the occasion that IPMP information is arranged, just advance to step S12, in step S12, whether the IPMP information of investigating upper level is encrypted, and then, in encrypted occasion, whether comprise the decoding key.Not having encrypted occasion and comprising the occasion of deciphering key and just advance, advance to step S15 in addition to step S13.

In step S13, whether permit the utilization of target data by the control information investigation of IPMP information.Advance to step S14 in the occasion that permission utilizes, mustn't available occasion advance to step S15.

In step S14, utilize target data corresponding to described IPMP information.

In step S15, forbid utilization corresponding to the target data of described IPMP information.

In step S16, investigate described IPMP information and whether comprise License Info, in the occasion that comprises, S17 advances to step, advances to step S18 in the occasion that does not comprise.

In step S17, enciphered data is deciphered according to the key information that from described License Info, obtains.

In step S18, investigate the IPMP information whether described IPMP information or decode results comprise the next level, advance to step S19 in the occasion that comprises, do not comprise occasion turn back to step S11.

In step S19, the UPMP information stores of described the next level is turned back to step S12 behind the memory of IPMP control device.

Figure 23 represents to realize the formation block diagram of the data processing equipment of action shown in Figure 22.In addition, in Figure 23, the inscape identical with inscape shown in Figure 14 is by additional same-sign.

This figure mainly illustrates the action of IPMP control device 50b.Memory 70 temporary transient storages are from the IPMP stream of multichannel distributor circuit 40.IPMP information extraction circuit 72 extracts IPMP information from the IPMP stream that memory 70 is stored.Extract the occasion of IPMP information the IPMP stream that can not be stored from memory 70, IPMP control device 50b will stop utilizing control and treatment.

Whether decoding key check circuit 74 IPMP information of the upper level of investigation from the output of IPMP information extraction circuit 72 is encrypted, and, in encrypted occasion, whether comprise the key information that is used for deciphering, there be not encrypted occasion, and, though the encrypted occasion of having stored key information, can decipher, to export IPMP information, IPMP information extraction circuit 72 be transferred in processing in other occasion.

Control information extraction circuit 76 extracts control information from IPMP information, and the control information of extracting is applied to utilizes control circuit 44a, 44b.

License Info extraction circuit 78 extracts the License Info that is included in the IPMP information, and with the License Info write storage circuit 80 that extracts.Decoding circuit 82 is deciphered the control information of IPMP information according to the resulting key information of License Info from be stored in memory circuit 80.

Whether IPMP information check circuit 84 investigation IPMP information comprise the IPMP information of the next level, the occasion that is comprising, the IPMP information of the next level is outputed to decoding key check circuit 74,, IPMP information extraction circuit 72 is transferred in processing in the occasion that does not comprise.

Below, be example with the schichtenaufbau of IPMP information shown in Figure 20, with the flow chart contrast of Figure 22 in, specifically describe the action of device shown in Figure 23.

Output to decoding key check circuit 74 (step S11) after the IPMP information that the IPMP stream extraction scene #1 of IPMP information extraction circuit 72 from be stored in memory 70 uses.Because the upper level target data of the IPMP information that scene #1 uses does not exist, therefore, the IPMP information (step S12) that decoding key check circuit 74 output scene #1 use.Control information extraction circuit 76 extracts control information from the IPMP information that scene #1 uses, according to the utilization (step S13, S14, S15) of the corresponding target data of this control information control.

License Info extraction circuit 78 extracts License Info from the IPMP information that scene #1 uses, and the License Info that extracts is outputed to memory circuit 80 (step S16).Decoding circuit 82 uses the key information that obtains from the License Info that is stored in memory circuit 80, decipher (step S17) to encrypting target #1 IPMP information of using and the IPMP information that encryption target #2 uses.

As the IPMP information of the next level, the IPMP information that IPMP information that IPMP information check circuit 84 inspection target #1 use and target #2 use, and output to decoding key check circuit 74 (step S18, S19).

Because it is encrypted that the IPMP information that the scene #1 of upper level uses does not have, therefore, the IPMP information (step S12) that decoding key check circuit 74 export target #1 use.Control information extraction circuit 76 extracts control information from the IPMP information that target #1 uses, according to the utilization (step S13, S14, S15) of the corresponding target data #1 of this control information control.

License Info extraction circuit 78 does not extract License Info (step S16) from the IPMP information that target #1 uses.The IPMP information that IPMP information check circuit 84 is not used from target #1 detects the IPMP information (step S18) of the next level.

Then, the IPMP information that IPMP information extraction circuit 72 extracting objects #2 use, and output to decoding key check circuit 74 (step S11).Because it is encrypted that the IPMP information that the scene #1 of upper level uses does not have, therefore, the IPMP information (step S12) that decoding key check circuit 74 export target #2 use.Control information extraction circuit 76 extracts control information from the IPMP information that target #2 uses, according to the utilization (step S13, S14, S15) of the corresponding target data #2 of this control information control.

License Info extraction circuit 78 does not extract License Info (step S16) from the IPMP information that target #2 uses.IPMP information check circuit 84 does not detect the IPMP information (step S18) of the next level from the IPMP information that target #2 uses.End IP MP control and treatment (step S11) here.

In addition, Figure 23 and corresponding each inscape that disposed of flow chart shown in Figure 22.Such as shown in figure 23, in the occasion of having fed back data,, because the conflict of data and synchronous problem can take place, therefore be necessary each square frame is handled one by one so if each square frame is handled side by side.At this situation, Figure 15 is the same with the formation of Figure 14, in the moment of having extracted IPMP information, whether investigate the IPMP information of upper level can decipher, in the occasion that can decipher, by in the layered structure of checking IPMP information, export IPMP information in turn, just can eliminate the feedback of data.

Figure 22 represents the processing to some scenes, and each more formation of new scene is necessary to carry out processing shown in Figure 22.

Carry out access control by IPMP information, just can control the utilization of each target data more reliably the next level of pin mode.The mode that accesses to your password in the description form of schichtenaufbau, and constitute IPMP stream with encryption IP MP information will be deciphered for the IPMP information of the target data of the next level in the utilization control of each scene.Thus, can prevent incorrect access to IPMP information.

The encryption of the foregoing description suggestion IPMP information.Because the encryption of target data itself is implemented by the IPMP system of MPEG-4, therefore by with the encryption and the usefulness of the IPMP information of present embodiment, not only prevent incorrect access to IPMP information, and can prevent incorrect access, and can control the utilization of the target data of the next level reliably according to the situation of utilizing of upper level to target data itself.

In other words, the decoding by permission encryption IP MP information and encrypt the utilization of target data of upper level of the decoding of target data accomplishes to make the IPMP information of the next level to decipher.And then, make the utilization of the encryption target data of the next level become possibility according to this IPMP information.

Obviously, the encryption for Figure 16 and schichtenaufbau as shown in Figure 17 and usefulness IPMP information also can obtain same action effect.

The present invention not only ties up image objects to 2, and also can be suitable for 3 dimension image objects.And, the formation of 3 dimension image objects of image structures pictorial data, model manufacturing data and animation data is such, for 1 logical target 1 target data correspondence is arranged not only, and for 1 logical target a plurality of target data correspondences are arranged, this occasion is also contained in the scope of the present invention.The formation of 3 dimension targets for example can be carried out on equipment such as family expenses game machine, personal computer and graphic computer.

In the above description, IPMP information and hierarchical information as management information will be transfused to as object flow, but, for example be also contained in technical scope of the present invention in occasion from the such external memory input of the external input device resemble the keyboard or magnetic memory apparatus.Hierarchical information is included in the management information and manages, but also can independently manage separately.In other words, by use each target data, management information and hierarchical information with hierarchical information the samely, just can control the utilization of other target data according to the situation of utilizing of target data with target data and as the IPMP information of management information.

Example 3

The data sending device of this example is encrypted the BIFS as the scene description information of the formation of each medium of having described image (still image), video (active images), audio frequency by 1 secondary key, according to the check of 1 secondary key and BIFS and 2 secondary keys of generation the bit stream (Media Stream) of each above-mentioned medium is encrypted again.Then, will make the bit stream (BIFS bit stream) of these encrypted BIFS, bit stream (media bitstream) and IPMP stream (the generation methods of the decryption method of BIFS and 2 secondary keys) overlapping bit stream of each medium send to data reproducing device described later.

In addition, the data reproducing device of this example is read into described data reproducing device by the IC-card with the information description of 1 secondary key, the BIFS that is encrypted by this 1 secondary key is deciphered, decipher and reproduce the bit stream of encrypted above-mentioned each medium after the method that use is described generates 2 secondary keys in above-mentioned IP MP stream.

Below, explain about above-mentioned data sending device and data reproducing device.

Figure 24 is the block diagram of formation that expression relates to the data sending device of the 3rd embodiment of the present invention.

The 501st, the encoder that BIFS uses will be from the signal source of the BIFS of the equipment of outside input encode (compression).At this moment, generate BIFS check and data.

The 502nd, the encoder of visual usefulness will be from the signal source of the image of external equipment input encode (compression).

The 503rd, the encoder that video is used will be from the video signal source of external equipment input encode (compression).

The 504th, the encoder that audio frequency is used will be from the audio signal source of outside input encode (compression).

505 is 1 secondary key generating portions, generates 1 secondary key according to the password from operation part 1605 inputs by the user.The 506th, the encryption equipment that BIFS uses, 1 secondary key that use is generated in 1 secondary key generating portion 505 is encrypted the bit stream of the BIFS that the encoder of using from BIFS 501 is exported, simultaneously, the check of the BIFS of encoder 501 outputs of using from 1 secondary key and BIFS and generate 2 secondary keys that each medium is used.

507,508,509 is respectively the encryption equipment of visual usefulness, the encryption equipment that video is used, the encryption equipment that audio frequency is used, and uses 2 secondary keys that medium separately use to encrypt from the bit stream corresponding to each medium of separately encoder (502,503,504) output.

The 510th, the multichannel distributor circuit, the bit stream separately of encryption equipment (507,508, the 509) output of using from the encryption equipment used by BIFS 506 and each medium generates an overlapping bit stream.This bit stream that is generated is sent to data reproducing device 1 described later.

The 1600th, the data sending device main body.

The 1601st, CPU, thus it reads the program code operation that the integral body of dispensing device 1600 is controlled by the ROM1602 from the code that has program stored therein.

The 1602nd, described ROM except that the storing said program code, is also storing when using 1 secondary key generating portion 506 and operation part 1605 to generate 1 secondary key employed character code etc. in this ROM.

The 1603rd, RAM, when CPU1601 carried out above-mentioned program code, it was as the service area.

The 1604th, external memory is preserved the password that several use in advance when generating 1 secondary key in this device.

The 1605th, above-mentioned operation part.

The 1606th, the display part, it is made of CRT and liquid crystal panel etc., perhaps shows perhaps to show the system information of dispensing device 1600 etc. by several passwords that are kept in the external memory 1604.

The 1607th, the bus of connection each part mentioned above.

Below, illustrate about according to the processing in the data sending device 1600 of the example of above formation.

Figure 25 is used for the easy block diagram that the processing stream of the data sending device 1600 among Figure 24 clearly is described and constitutes.In addition, in Figure 25, the key element identical with Figure 24 added same-sign.

The processing action of explanation data sending device 1600 in the flow chart of reference Figure 26.

At first, be stored in respectively each encoder (501～504) (step S1701) from the BIFS of external equipment input and the signal source of each medium.

The signal source that is input to BIFS in described each encoder (501～504) and each medium be encoded (S1702).

Import 1 secondary keys (step S1703) by the user from 1 secondary key generating portion 505.

The bit stream of the BIFS of encoder 501 codings of being used by BIFS is in the encryption equipment 506 that BIFS uses, by by 1 secondary key encrypted (step S1704) of user from 505 inputs of 1 secondary key generating portion.

The bit stream of encrypted BIFS is output to multiplexer 510.At this moment, in the encryption equipment 506 that BIFS uses, use the BIFS in the encoder 501 that BIFS uses, generated check and and described 1 secondary key generate 2 secondary keys (step S1705) of each every usefulness.

On the other hand, the bit stream of each medium of the encoder of using with each medium (502,503,504) coding, described 2 secondary keys of use are in the encryption equipment (507,508,509) of each medium encrypted (step S1706).

By multiplexer 510 will resemble above-mentioned encrypted whole bit streams be piled up (step S1707).

In addition, be stored among the IPMP (stream) about the encryption method of the BIFS of the generation method of having used 2 secondary keys that each medium uses and 1 secondary key, and output to multiplexer 510.

In multiplexer 510, make the bit stream of that imported, encrypted BIFS, each medium and IPMP all overlapping, generate a bit stream of structure shown in Figure 27.The bit stream that is generated is sent to data reproducing device 1 described later (step S1708).

In addition, in Figure 27, the 1201st, stem, it is describing the set information of side (profile)/class information, decoder, the attribute information of each target etc.The 1202nd, IPMP stream, the 1203rd, BIFS stream, the 1204th, image stream.

1205,1207,1209 is respectively video flowing, the 1206,1208, the 1210th, and audio stream.Like this, the real-time reproduction of video, audio frequency etc. and synchronous needed medium are often alternatively overlapping.

In the present embodiment, the bit stream (1206,1208,1210) of bit stream of BIFS and video (1205,1207,1209) and audio frequency is protected by encryption respectively.

Secondly, the block diagram of data reproducing device 1 inside among expression the 3rd embodiment in Figure 28.

The 1st, the data reproducing device in the present embodiment.

The 101st, the bit stream receiving unit receives the above-mentioned bit stream that sends from data sending device 1600.In addition, bit stream receiving unit 101 not necessarily is subjected to the restriction from the reception of communication line, also the bit stream that generates in data sending device 1600 can be stored in the mediums such as floppy disk and CD-ROM, and read from this medium.

The 102nd, the multichannel distributor circuit, it takes out the bit stream of above-mentioned each medium and BIFS and IPMP from the bit stream that is sent by dispensing device 1600.

The 103rd, hypervisor, the information that the user verified that plan to reproduce above-mentioned each medium in checking processing unit 114 is imported in the IPMP hypervisor 103, and in this occasion, the decipher 104 that BIFS is used moves permission.In addition, read about being stored in information, and the decipher 104 that BIFS uses is sent the indication of deciphering from the encryption method of the BIFS among the IPMP of multichannel distributor circuit 102.

The 104th, the decipher that BIFS uses, it only just moves moving the occasion of permission from IPMP hypervisor 103.As this movement content be exactly, use is from 1 secondary key of checking processing unit 114, according to from the indication of IPMP hypervisor, the encrypted BIFS from 102 inputs of multichannel distributor circuit is decrypted, and decrypted BIFS is delivered to the decoder 108 that BIFS uses.Meanwhile, take out decrypted BIFS check and, use this check and and from 1 secondary key of demo plant 114, generate 2 secondary keys according to the generation method that is stored in 2 secondary keys of using from each medium among the IPMP of multichannel distributor circuit 102, output to the decipher (105,106,107) that each medium is used then respectively.

The 105th, the decipher of visual usefulness uses described 2 secondary keys that the bit stream from the image of multichannel distributor circuit 102 input is decrypted, and then the bit stream of decrypted image is outputed to the decoder 109 of visual usefulness.

The 106th, the decipher that video is used uses described 2 secondary keys that the bit stream from the video of multichannel distributor circuit 102 input is decrypted, and then, the bit stream of decrypted video is outputed to the decoder 110 that video is used.

The 107th, the decipher that audio frequency is used uses described 2 secondary keys, and the bit stream from the audio frequency of multichannel distributor circuit 102 input is decrypted, and then, the bit stream of decrypted audio frequency is outputed to the decoder 111 that audio frequency is used.

108,109,110,111 is respectively the decoder that each above-mentioned medium are used.In addition, the decoder used of BIFS 108 generates the result of decoding of BIFS and the tree structure information of scene shown in Figure 29.So-called this tree structure information is the configuration information of each medium of expression and mutual information such as dependence.

The 112nd, transcriber (レ Application ダ ラ) is to dispose each medium and structure, the video/audio of following it at last according to described tree structure information, and the part that shows, reproduces.

The 113rd, the equipment of output usefulness, for example, image, video is shown on TV Monitor, audio frequency is from loudspeaker reproduction.

The 114th, above-mentioned checking is handled, and can use above-mentioned 1 secondary key input to want to reproduce the user's of described each medium password.In addition, the input of this password uses the IC-card of not shown checking usefulness to import.In addition, in the IC-card of this checking usefulness, put down in writing user profile, also this user profile can have been read in checking processing unit 114.In addition, in this example, be not particularly limited about the internal structure of verifying processing unit 114.

The 115th, CPU, it is according to each the program code control each part mentioned above described later that is stored among the ROM117.

The 116th, RAM, it is used as the be in operation service area of service routine code of CPU115.In addition, the TV Monitor that is included in the output equipment 113 uses as VRAM.In addition, also can be via the bit stream data of bit stream receiving unit 101 temporary transient storages from the outside input.

The 117th, ROM is storing the various program codes of CPU operation.

The 118th, the bus of connection each part mentioned above.

Below, illustrate about according to the processing in the data reproducing device 1 of this example of above formation.

Figure 30 is the block diagram that is configured to the handling process of the data reproducing device 1 among easy to understand ground explanation Figure 28.In addition, in Figure 30, with Figure 28 identical element on additional same-sign.Below, on one side with reference to the flow chart of Figure 31, the processing action of data reproducing device 1 is described on one side.

The bit stream that receives from data sending device 1600 is input to data reproducing device 1 (step S1501) via bit stream receiving unit 101.

From the bit stream of input, take out each bit stream (each medium, BIFS and IPMP) (S1502) by multichannel distributor circuit 102.

The IPMP that is removed is output to IPMP hypervisor 103, BIFS is output to the decipher 104 that BIFS uses, the image bit stream is output to the decipher 105 of visual usefulness, video bit stream is output to the decipher 106 that video is used, and audio bit stream is output to the decipher 107 (step S1503) that audio frequency is used.

On the other hand, in the user's who wants to reproduce described each medium checking is handled, the occasion (step S1504) that is verified this user, as mentioned above, obtaining by IPMP hypervisor 103 moving in the decipher 104 that the BIFS of permission uses, as mentioned above, carry out the deciphering of BIFDS, and decrypted BIFS is flowed the decoder 108 (S1505) that BIFS uses.

The BIFS stream that is read out is decoded by the decoder 108 that BIFS uses, and generates the tree-like information (step S1506) of scene as shown in Figure 29.

In addition, simultaneously, in the decipher 104 that BIFS uses, will deliver to the decipher (105～107) (step S1507) of each medium by generate 2 secondary keys that each medium uses as the processing illustrated in above-mentioned.

In the decipher (105～107) that each medium is used, carry out the deciphering of medium separately, the bit stream of medium separately is sent to the decoder (109～111) (step S1508) that each medium is used.

Deliver to each medium decoded (step S1509) of decoder.Structure, video/audios that each decoded medium are disposed each medium and follow it at last by transcriber 112 according to described tree-like information, equipment 113 by output usefulness, image, video are shown on TV Monitor, and audio frequency is from loudspeaker reproduction (step S1510).

In addition, in above-mentioned example, in the generation of 2 secondary keys, use 1 secondary key and BIFS check and, but also can use in addition the number of the target in 1 secondary key and the scene.

Have dispensing device, demo plant and their control method of above explanation by use, can protect the safety that is included in each medium in the scene.

Example 4

In this example; illustrate and illustrate such data reproducing device; promptly; if input by protected scene and do not have the scene that protected scene constitutes (below; be called " mixing scene ") bit stream, so just the bit stream with the scene imported is divided into protected bit stream and does not have protected bit stream.

In addition, the data sending device that bit stream is sent to the data reproducing device in this example uses and the identical parts of employed dispensing device in the 3rd example.

In Figure 32, represent the block diagram of the data reproducing device inside in this example.In addition, in Figure 32, the key element identical with Figure 30 added identical symbol, and omits its explanation.

The 201st, there is not the bit stream of protected scene, are the bit streams of divided result multichannel distributor circuit 102 via bit stream receiving unit 101 from the bit stream of the mixing scene of data sending device 1600 inputs.

The 202nd, the bit stream of protected scene is result's separated multichannel distributor circuit 102 bit stream via bit stream receiving unit 101 from the bit stream of the mixing scene of data sending device 1600 input.

In addition, the scene in the present embodiment is assumed to scene shown in Figure 33.In other words, in BOX701, paste map architecture, in cylinder 702, pasted video structure, in addition, supposed the scene that sound is reproduced simultaneously.

In addition, the mixing scene in this example, such as shown in figure 34, expression case and stick on map architecture on the case and do not have protectedly has only cylinder and video structure, audio frequency protected.In the irreproducible occasion of protected data,, so just become result shown in Figure 35 if will mix the equipment 113 that scene outputs to output usefulness.

The structure of the above-mentioned mixing scene bit stream of the overlapping unprotected scene of expression among Figure 36.

Adding oblique line partly is protected bit stream.For example, the 403rd, the bit stream part of the BIFS of non-protection, the 405th, the bit stream part of protected BIFS.The bit stream of so just knowing BIFS is cut apart.

And, there is not the bit stream 201 of scene of protection decoded in the decoder 108b that BIFS uses same as before, generate the tree-like information of scene shown in Figure 34.On the other hand, the bit stream 202 of protected scene is decrypted in the decipher 104 that BIFS uses.Afterwards,, in the decipher 104 that BIFS uses, generate 2 secondary keys that each medium is used, and this 2 secondary key is outputed to the decipher 107 that decipher 106 that video uses and audio frequency are used as illustrated in the 3rd example.Below, be the processing identical with the 3rd example.

Have the demo plant of formation discussed above and their control method by use, for also protecting the safety that is included in each medium in this mixing scene by protected scene and the mixing scene that do not have protected scene to constitute.

Other example

In addition, the the 1st～the 4th above-mentioned example by a plurality of equipment (for example both had been applicable to, host computer, interface computer, reader, printer etc.) system that constitutes, also be applicable to the device of forming by an equipment (for example, photocopier, picture unit etc.).

In addition, self-evident, the purpose of above-mentioned example also can be by will having write down the function that realizes described example medium (or recording medium) feed system or the device of software program code, the computer of this system or device (or CPU and MPU) is read and is carried out the program code that is stored in the medium and reaches.In this occasion, the program code of reading from medium itself will be realized the function of described example, and the medium of having stored this program code will constitute above-mentioned example.In addition, self-evident, also comprise such occasion, promptly, carry out the program code of reading by computer, can not only realize the function of described example, and, according to the indication of this program code, Yun Hang operating system (OS) etc. will be carried out processing, and the function by the described example of this processings realization of part or all reality on computers.

And, self-evident, also comprise such occasion, promptly, the program code of reading from medium is written in the function expansion board that is inserted into the computer and is connected to after the memory that is possessed in the function extension facility of computer, according to the indication of this program code, the CPU that is possessed in this function expansion board and function extension facility etc. will carry out processing, and the function by the described example of this processings realization of part or all reality.

Claims (16)

1. a data processing equipment is characterized in that, comprising:

The 1st encryption device of scene description information being encrypted by 1 secondary key;

Use described 1 secondary key to generate the generation equipment of 2 secondary keys;

Use 2nd encryption device of described 2 secondary keys to media stream privacy;

Thereby the bit stream of the encryption method by will representing described the 1st encryption device and the result's that the described the 1st and the 2nd encryption device is produced bit stream are piled up the overlay equipment that generates a bit stream; And

The bit stream that described overlay equipment is generated sends to the transmitting apparatus of external equipment,

Wherein, described generation equipment further uses described scene description information to generate described 2 secondary keys.

2. as the data processing equipment of claim 1 record, it is characterized in that the bit stream that described overlay equipment generates is the bit stream according to MPEG-4.

3. as the data processing equipment of claim 2 record, it is characterized in that described scene description information is according to the binary format information of the scene of MPEG-4, promptly according to the BIFS information of MPEG-4.

4. a data processing equipment is characterized in that, comprising:

Reception is from the receiving equipment of the bit stream of external equipment transmission;

Detect the checkout equipment of 1 secondary key;

Use is by detected 1 secondary key of described checkout equipment, according to the decryption method that in the described bit stream that has received, is comprised, and the 1st readout equipment that the encrypted scene description information that is comprised in the described bit stream that has received is decrypted;

Use described 1 secondary key to generate the generation equipment of 2 secondary keys;

The 2nd readout equipment that uses 2 secondary keys that the encrypted Media Stream that is comprised in described bit stream is decrypted; And

The reproducer of the Media Stream that described the 2nd readout equipment of scene description information regeneration that generates according to described the 1st readout equipment generates,

Wherein, described generation equipment further uses described scene description information to generate described 2 secondary keys.

5. as the data processing equipment of claim 4 record, it is characterized in that described checkout equipment detects this 1 secondary key from the medium that stores described 1 secondary key.

6. as the data processing equipment of claim 4 record, it is characterized in that described bit stream is the bit stream according to MPEG-4.

7. as the data processing equipment of claim 6 record, it is characterized in that described scene description information is according to the binary format information of the scene of MPEG-4, promptly according to the BIFS information of MPEG-4.

8. data handling system, it is made of data sending device and data reproducing device, it is characterized in that,

Described data sending device comprises: the 1st encryption device of scene description information being encrypted by 1 secondary key; Use described 1 secondary key to generate the generation equipment of 2 secondary keys; The 2nd encryption device that uses described 2 secondary keys that Media Stream is encrypted; Thereby the result's that the bit stream of the encryption method by will representing described the 1st encryption device and the described the 1st and the 2nd encryption device produce bit stream is piled up the overlay equipment that generates a bit stream; And the bit stream that described overlay equipment produces sent to the transmitting apparatus of described data reproducing device,

Described data reproducing device comprises: receive from the receiving equipment of the bit stream of described transmitting apparatus transmission; Detect the checkout equipment of 1 secondary key; Use is by detected 1 secondary key of described checkout equipment, the 1st readout equipment that the encrypted scene description information that is comprised in to the described bit stream that is receiving according to the decryption method that is comprised in the described bit stream that has received is decrypted; Use described 1 secondary key to generate the generation equipment of 2 secondary keys; Use described 2 secondary keys, the 2nd readout equipment that the encrypted Media Stream that is comprised is decrypted in described bit stream; And the reproducer of the Media Stream that generates according to described the 2nd readout equipment of scene description information regeneration that described the 1st readout equipment generates,

Wherein, the generation equipment of described data sending device further uses described scene description information to generate described 2 secondary keys, and the generation equipment of described data reproducing device further uses described scene description information to generate described 2 secondary keys.

9. data processing method is characterized in that comprising:

By 1 secondary key operation is encrypted in the 1st of scene description information encryption;

Use described 1 secondary key to generate the generation operation of 2 secondary keys;

The 2nd encryption operation of using described 2 secondary keys that Media Stream is encrypted;

Thereby encrypt the result's of operation generation bit stream and be piled up the overlapping step that generates a bit stream by representing the described the 1st bit stream and the described the 1st and the 2nd of encrypting the encryption method in the operation; And

The bit stream that described overlapping step is produced sends to the transmission operation of external equipment,

Wherein, described generation operation further uses described scene description information to generate described 2 secondary keys.

10. as the data processing method of claim 9 record, it is characterized in that the bit stream that described overlapping step produces is the bit stream according to MPEG-4.

11. the data processing method as claim 10 record is characterized in that, described scene description information is according to the binary format information of the scene of MPEG-4, promptly according to the BIFS information of MPEG-4.

12. a data processing method is characterized in that comprising:

Reception is from the reception operation of the bit stream of external equipment transmission;

Detect the detection operation of 1 secondary key;

Use is by detected 1 secondary key of described detection operation, the 1st reads operation according to the decryption method that is comprised in the described bit stream that has received to what be included in that encrypted scene description information in the described bit stream that has received is decrypted;

Use described 1 secondary key to generate the generation operation of 2 secondary keys;

Use described 2 secondary keys the 2nd to read operation to what be included in that encrypted Media Stream in the described bit stream is decrypted; And

Read the scene description information that operation produces according to the described the 1st, reproduce the described the 2nd reproduction operation of Media Stream of reading the generation of operation,

Wherein, described generation operation further uses described scene description information to generate described 2 secondary keys.

13. the data processing method as claim 12 record is characterized in that, in described detection operation, detects this 1 secondary key from the medium that stores described 1 secondary key.

14. the data processing method as claim 12 record is characterized in that described bit stream is the bit stream according to MPEG-4.

15. the data processing method as claim 14 record is characterized in that, described scene description information is according to the binary format information of the scene of MPEG-4, promptly according to the BIFS information of MPEG-4.

16. the data processing method of a data handling system, described data handling system comprises data sending device and data reproducing device, it is characterized in that,

The data processing method of described dispensing device comprises: the 1st encrypt operation by 1 secondary key to what scene description information was encrypted; Use described 1 secondary key to generate the generation operation of 2 secondary keys; The 2nd encryption operation of using described 2 secondary keys that Media Stream is encrypted; Thereby encrypt the result's of operation generation bit stream and be piled up the overlapping step that generates a bit stream by representing the described the 1st bit stream and the described the 1st and the 2nd of encrypting the encryption method in the operation; And the bit stream that described overlapping step produces sent to the transmission operation of described data reproducing device,

The data processing method of described data reproducing device comprises: receive from the reception operation of the bit stream of described dispensing device transmission; Detect the detection operation of 1 secondary key; Use is by detected 1 secondary key of described detection operation; According to the decryption method that is included in the described bit stream that has received, the 1st read operation to what be included in that encrypted scene description information in the described bit stream that has received is decrypted; Use described 1 secondary key to generate the generation operation of 2 secondary keys; Use described 2 secondary keys the 2nd to read operation to what be included in that encrypted Media Stream in the described bit stream is decrypted; And read the reproduction operation that scene description information regeneration the described the 2nd that operation produces is read the Media Stream that operation produces according to the described the 1st,

Wherein, the generation operation of the data processing method of described dispensing device further uses described scene description information to generate described 2 secondary keys, and the generation operation of the data processing method of described data reproducing device further uses described scene description information to generate described 2 secondary keys.

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