CN1965363B - Recording/reproduction device - Google Patents
Recording/reproduction device Download PDFInfo
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- CN1965363B CN1965363B CN2005800185897A CN200580018589A CN1965363B CN 1965363 B CN1965363 B CN 1965363B CN 2005800185897 A CN2005800185897 A CN 2005800185897A CN 200580018589 A CN200580018589 A CN 200580018589A CN 1965363 B CN1965363 B CN 1965363B
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Abstract
The present invention provides a recording and reproduction device capable of preventing content having details identical to the details of outputted content from being reproduced simultaneously with the outputted content, and allowing the content to be reproduced in high quality. A recording/reproduction device (110) includes a recording area (115), a communication processing unit (119) capable of outputting the related content having details identical to details of the content recorded in the recording area (115) into an external recording medium (160), and an encoding/decoding processing unit (117) capable of obtaining unique information of the external recording medium (160). The encoding/decoding processing unit (117) changes a state of content recorded in the recording area (115) into a state irreproducible unless using unique information of the content, when the related content is outputted to the external recording medium (160); then reproduces the content recorded in the recording area (115) using the unique information, when the encoding/decoding processing unit (117) obtains the unique information.
Description
Technical field
The present invention relates to the record regenerator of recorded content and reproducing contents.
Background technology
In recent years, the information terminal device (hereinafter referred to as mobile terminal apparatus) that can be convenient for carrying such as mobile phone, personal digital assistant (PDA:Personal DigitalAssistants) spread on the market.Mobile terminal apparatus comprises that vision is transmitted message unit and message unit is transmitted in the sense of hearing, this vision is transmitted message unit and is transmitted information by vision to the user with small-sized liquid crystal panel etc., and this sense of hearing transmission message unit transmits information by the sense of hearing to the user with loudspeaker and earphone etc.As the recording medium of such mobile terminal apparatus, comprise that the common store card (for example IC-card of SD card (registered trademark) or memory stick (registered trademark) etc.) of the Nonvolatile memory of flash memory etc. is also popularized.Digital contents such as video and audio frequency can be preserved in addition at this storage card, in this content of carried terminal device audiovisual.
Also formally begin received terrestrial digital broadcasting in Japan, distributed the content of high image quality with digital form.And the machine of former states such as DVR or digital versatile disc (DVD:DigitalVersatile Disc) video recorder records digital signal is popularized, and the former state record divides the digital signal of the content of sending, and also becomes simple.
Patent documentation 1 discloses the copyright protection method of utilizing hard disk and storage card.The details of this method is as follows, and encrypted content also is recorded in the hard disk, and will decipher required key and be kept in the zone that ensures safety really in the storage card, thereby prevents the improper use of content.
Be accompanied by the digitizing of content, proposed the scheme of various protection copyright owner rights.Being called as the rule that limit only duplicates once is exactly one of its scheme.In this rule, at the digital content that has been recorded, only allow to duplicate once, duplicating once more in addition is unallowed.For example, add the digital broadcast signal that limit is only duplicated identifier once, under the situation about recording with the video recorder of DVR and DVD recorder etc., do not allowed to copy to other machines.When content record is arrived other medium, just must the original content of deletion.With this deletion is prerequisite, and with the medium of this content record to other, this is called as " moving ".
The deskTop video of DVR and DVD recorder etc., because its main application is to place within the family to use, thus require to come recorded content with high image quality and high tone quality, and regenerate with high image quality and high tone quality.Therefore, deskTop video possesses the big pen recorder of the recording capacity of hard disk or DVD etc.Format of content also adopts the form that can come contents processing with high image quality and high tone quality.In general, the bit rate height of such content.
On the other hand, the prerequisite of mobile terminal apparatus is for portably using, and regeneration is stored in the content of recording mediums such as storage card.Therefore, mobile terminal apparatus, the display device displaying contents with smaller drives with battery, and this just requires electricity consumption low.Therefore, the format of content that is used to be recorded in mobile terminal apparatus then adopts image quality and the low form of tonequality.That is, the bit rate of content is generally lower.
Only limitting in the rule of duplicating once, for example record under the situation of contents such as digital television broadcasting, can be saved in 2 different recording mediums simultaneously at most.Effectively utilize this rule, just can preserve content with the high capacity high precision, can preserve content with the low precision of low capacity at storage card again simultaneously at hard disk drive (HDD) or DVD etc.
Patent documentation 1: TOHKEMY 2002-368732 communique
Yet, the user normally stores after the more content in jumbo HDD, desirable content is moved on the storage card, and in this content of outdoor application. at this moment, owing to be suitable for the rule that moves, content among the HDD must be deleted. content moved under the situation of storage card, usually, this content is to record on the storage card with the bit rate that is lower than when being recorded in HDD. therefore, even this content is moved to HDD, can not recover the content of original high bit rate. therefore,, but can not enjoy this content with high image quality and high tone quality even the user thinks to get back to comfortable this content of enjoyment once more in room earlier after this content of outdoor application.
Summary of the invention
In view of above-mentioned problem, the object of the present invention is to provide a kind of record regenerator, the content that does not allow to regenerate simultaneously and export has the content of same detail and the content of this output, and, when regeneration, the content that will have same detail with the content of this output is regenerated as high-quality content.
In order to solve above-mentioned problem, and reach above-mentioned purpose, record regenerator of the present invention comprises: record cell, in the 1st recording medium content; Output unit, to the 2nd recording medium output related content, this related content has the details identical with the content that is recorded in above-mentioned the 1st recording medium; Intrinsic information obtains the unit, obtains the intrinsic information of above-mentioned the 2nd recording medium; Compressed and decompressed portion, be used for to the foregoing read from above-mentioned the 1st recording medium promptly the 1st compressed content compress or decompress and change the bit rate of the 1st compressed content; The 1st Status Change unit, when above-mentioned output unit with above-mentioned related content under the situation of above-mentioned the 2nd recording medium output, utilizing the intrinsic information of above-mentioned the 2nd recording medium, is that the intrinsic information of above-mentioned the 2nd recording medium of unfavorable usefulness is with regard to unrenewable state with the content alteration that is recorded in above-mentioned the 1st recording medium; And regeneration unit, after the content alteration that will be recorded in above-mentioned the 1st recording medium in above-mentioned the 1st Status Change unit is unrenewable state, above-mentioned intrinsic information obtains under the situation of intrinsic information that the unit obtains above-mentioned the 2nd recording medium, utilize the intrinsic information of above-mentioned the 2nd recording medium, regenerative recording is in above-mentioned the 1st recording medium, and change to the content of unrenewable state, above-mentioned compressed and decompressed above-mentioned the 1st compressed content of reading from above-mentioned the 1st recording medium decompressed after, and content that obtain decompressed to this compressed and generated the 2nd compressed content, the bit rate of the 2nd compressed content changes to below the bit rate of above-mentioned the 1st compressed content, above-mentioned the 1st Status Change unit comes above-mentioned the 2nd compressed content encrypted according to the intrinsic information of the external record medium that obtained above-mentioned the 2nd recording medium of conduct that the unit obtains by above-mentioned intrinsic information and obtains the 1st encrypted content, by above-mentioned output unit the 1st encrypted content is outputed to this external record medium as above-mentioned related content, above-mentioned the 1st Status Change unit will encrypt and obtain the 2nd encrypted content being recorded in above-mentioned the 1st compressed content in above-mentioned the 1st recording medium according to the intrinsic information that is obtained the said external recording medium that the unit obtains by above-mentioned intrinsic information, and the 2nd encrypted content recorded above-mentioned the 1st recording medium, with as the above-mentioned content that changes to unrenewable state, and delete above-mentioned the 1st compressed content in above-mentioned the 1st recording medium.
Like this, record regenerator of the present invention, related content is outputed under the situation of the 2nd recording medium, utilize the intrinsic information of above-mentioned the 2nd recording medium, will be recorded in the content alteration of above-mentioned the 1st recording medium for not utilizing this intrinsic information with regard to unrenewable state.And record regenerator of the present invention obtains to utilize this intrinsic information under the situation of this intrinsic information after this change, and regenerative recording is in content above-mentioned the 1st recording medium, that change to unrenewable state.According to above-mentioned, record regenerator of the present invention does not allow to regenerate simultaneously and the content of exporting has the content of same detail and the content of this output, and, when regeneration, the content that will have same detail with the content of this output is regenerated as high-quality content.
The present invention can be that the record regeneration method of step is realized by the characteristic structural unit with record regenerator of the present invention, can also realize by the program that makes computing machine carry out above-mentioned steps.This program also can be by CD-ROM etc. recording medium or the transfer medium of communication network etc. circulate.
The present invention can provide a kind of record regenerator, the content that does not allow to regenerate simultaneously and export has the content of same detail and the content of this output, and when regeneration, the content that will have same detail with the content of this output is regenerated as high-quality content.
That is, according to the present invention, always one of the content that can regenerate, thus can observe the rule that moves.That is, avoid improper and duplicate, can protect copyright owner's right.
Also have, record regenerator of the present invention, can regenerate with original high-precision quality has the content of same detail with the content of output.This is very useful concerning the user.
Description of drawings
Fig. 1 is the figure that the outward appearance of the record regenerator 110 of embodiment and external record medium 160 is shown.
Fig. 2 is the block scheme that the structure of the record regenerator 110 of embodiment and external record medium 160 is shown.
Fig. 3 is the process flow diagram that the order of regeneration order of digital broadcast signal and recording digital broadcast signal is shown, and this digital broadcast signal is the signal that the record regenerator 110 of embodiment receives.
Fig. 4 illustrates the process flow diagram of data recording to the order of external record medium 160, and these data are the data that are kept at the record regenerator 110 of embodiment 1.
Fig. 5 is the figure that the following state of the record regenerator 110 of embodiment 1 and external record medium 160 is shown, this record regenerator 110 is preserved unrenewable content compression data AN and key K A, and these external record medium 160 are preserved unrenewable content compression data BN and key K B.
Fig. 6 illustrates the process flow diagram of regenerative recording in the order of the data of the external record medium 160 of embodiment 1.
Fig. 7 is the process flow diagram that following order is shown, and deletion record is in the order of the content of the external record medium 160 of embodiment 1, and this content is got back to the order of record regenerator 110 imaginaryly.
Fig. 8 is the figure of following state that the external record medium 160 of embodiment 1 are shown, these external record medium 160 are preserved unrenewable content compression data B, also preserve the identifier (original device ID) that is used to discern the device that sends this packed data B and discern the group that the identifier (content ID) of this packed data B is formed.
Fig. 9 illustrates the process flow diagram that the data recording that will be recorded in the record regenerator 110 of embodiment 2 arrives the order of external record medium 160.
Figure 10 is the figure that an example of identical content confirmation is shown.
Figure 11 illustrates to utilize to record the process flow diagram of regenerating unit 1130 regenerative recordings in the order of the content of the external record medium 160 of embodiment 2.
The numbering explanation
110 record regenerators
111 tuners
112 demodulation sections
The 113TS demoder
114 compression-decompression portions
115 posting fields (record regenerator one side)
116 Regeneration Treatment portions
117 encryption-decryption processing portions
118ROM zone (record regenerator one side)
119 communication process portions (record regenerator one side)
130 display device
131 loudspeakers
141 clock lines
142 instruction-answer lines
143 data lines
144 data lines
145 data lines
146 electric power supply lines
160 external record medium
161 communication control units (external record medium one side)
162 card control portions
163 posting fields (external record medium one side)
164ROM zone (external record medium one side)
Embodiment
The specific embodiment of the present invention is described with reference to the accompanying drawings.
(embodiment 1)
The structure of the record regenerator 110 and the external record medium 160 of embodiment 1 at first, is described with Fig. 1 and Fig. 2.
Fig. 1 is the figure that the outward appearance of the record regenerator 110 of embodiment 1 and external record medium 160 is shown.Record regenerator 110 is record regenerators of DVR or DVD recorder etc.External record medium 160 are examples of the 2nd recording medium, and these external record medium 160 are the storage cards with semiconductor memory.Record regenerator 110 has the slot 200 that inserts external record medium 160.
Fig. 2 is the block scheme that the structure of the record regenerator 110 of embodiment 1 and external record medium 160 is shown.The connector (not shown) of the slot 200 (Fig. 2 is not shown) of record regenerator 110 is connected with the external record medium 160 that are inserted into slot 200.By this connector (Connector), record regenerator 110 is exported steering order to outside recording medium 160 output powers, and output data etc., and external record medium 160 are to record regenerator 110 output answers and data etc.Record regenerator 110 at embodiment 1 is desk-top DVR.Record regenerator 110 is handled the digital TV broadcast signal that is received by antenna 150, to display device 130 and loudspeaker 131 output images and sound.
It is by clock line 141 that record regenerator 110 is connected with external record medium 160, instruction-answer line 142, data line 143,144,145, electric power supply line 146, and above-ground route (not shown).Clock line 141, instruction-answer line 142, data line the 143,144, the 145th is used for the bus (bus) that communicates between communication process portion 119 and the communication process portion 161.Record regenerator 110 to the electric power supply line of outside recording medium 160 supply capabilities and 146 and above-ground route (not shown) be included in the connecting line of linkage record regenerating unit 110 and external record medium 160.External record medium 160 are accepted the electric power of record regenerator 110 supplies and are worked.
Next function about each formation portion of external record medium 160 describes.
Posting field 163, the data with communication process portion 161 receives from record regenerator 110 write down and preserve according to the indication of card control portion 162.Read under the data conditions of being preserved when record regenerator 110 request, be kept at the data of posting field 163, be sent to record regenerator 110 by communication process portion 161 according to the control of card control portion 162.Under the data conditions that record regenerator 110 request changes or deletion is preserved, be kept at the data of posting field 163, be changed or deleted according to 162 controls of card control portion.At embodiment 1, posting field 163 is semiconductor memories of flash memory etc.
Secondly the function to each formation portion of record regenerator 110 etc. describes.
TS demoder 113 decoding TS.Because the digital broadcast signal that sends from broadcasting office comprises effective data packets and invalid packets, TS demoder 113 omits invalid packets, generates content compression data A.The view data and the voice data that are included in terrestrial digital broadcasting signal together are compressed, by Error Correction of Coding, and by scrambling.The view data and the voice data of 113 pairs of receptions of TS demoder carry out descrambling, and carry out error correction decoding.TS demoder 113 is sent to compression-decompression portion 114 with the content compression data A that generates.In the embodiment 1, the digital signal streams that record regenerator 110 receives is the stream of MPEG2-TS form.
Posting field 115 is to preserve the content that received and the zone of contents management information, and this contents management information is the information that is used for organize content.Posting field 115 is sense data and editing data as required.At embodiment 1, posting field 115 is hard disk drives.Posting field 115 is preserved content and the contents management information that receives from compression-decompression portion 114, when being requested to read, to the content of compression-decompression portion 114 output preservations.Moreover posting field 115 is examples of record cell and the 1st recording medium.
Compression-decompression portion 114 is from TS demoder 113, posting field 115 or encryption-decryption processing portion 117 received contents, and to posting field 115, Regeneration Treatment portion 116 or encryption-decryption processing portion 117 output contents.
(1) compression-decompression portion 114, the content compression data A that will receive from TS demoder 113 is under the situation of posting field 115 outputs, with the content compression data A former state output that receives, perhaps export for recompression after the preservation form decompression earlier that converts other to.Also have, (2) compression-decompression portion 114, the content compression data A that will receive from TS demoder 113 is under the situation of Regeneration Treatment portion 116 outputs, and the content compression data A of the reception that decompresses is converted into not packed data and exports.Also have, (3) compression-decompression portion 114, the content compression data A that will receive from posting field 115 is under the situation of Regeneration Treatment portion 116 outputs, and the content compression data A of the reception that decompresses is converted into not packed data and exports.Also have, (4) compression-decompression portion 114, the content that will receive from posting field 115 after the decompression content, is carried out the compression processing of other form under the situation of encryptions-decryption processing portion 117 outputs, export to encryption-decryption processing portion 117.The purpose of other form is at reproducing contents such as mobile terminal apparatus, and this other form is the form that the quality of reduction content is saved in external record medium 160, and other form is MPEG4 in the embodiment 1.Also have, (5) compression-decompression portion 114, the content that will receive from encryptions-decryption processing portion 117 is under the situation that Regeneration Treatment portion 116 exports, and this content that decompresses is exported to Regeneration Treatment portion 116 as packed data not.
Encryption-decryption processing portion 117, obtain the intrinsic information of external record medium 160, the intrinsic information of these external record medium 160 is externally in the ROM zone 164 of recording medium 160, use this intrinsic information, the content compression data A that encryption receives from compression-decompression portion 114, make unrenewable content compression data B. encryption-decryption processing portion 117, by data line 143,144,145, the unrenewable content compression data B that makes is sent in external record medium 160. embodiments 1 for it can not be regenerated, the intrinsic information encrypted content packed data A. encryption-decryption processing portion 117 that uses external record medium 160 is in order to activate unrenewable content compression data B once more, the unrenewable content compression data B. that decodes does not do special qualification about the process of this encryption and decoding. because it can not be regenerated, so can not use content fully, but according to activating again, this content is activated once more, as long as can guarantee these, as making its unrenewable method, can use the additive method beyond encrypting. unrenewable content compression data B is an example of related content.
Encryption-decryption processing portion 117, according to the intrinsic information of the record regenerator 110 that is stored in ROM zone 118 and the content compression data A that receives from compression-decompression portion 114, make the key K A and the key K B that determine record regenerator 110, this record regenerator 110 is meant the device that is shown in the unrenewable content compression data B of external record medium 160 records.Key K A is identical key with key K B.Encryption-decryption processing portion 117 makes key K B be saved in posting field 163 in the external record medium 160 by communication control unit 119, and makes key K A be saved in posting field 115 in the record regenerator 110.
Encryption-decryption processing portion 117, reception is kept at the content compression data A of posting field 115, do not compress during reception-the compression processing of decompression portion 114 or decompression and receive, and obtain the intrinsic information of external record medium 160, the intrinsic information of these external record medium 160 is externally in the ROM zone 164 of recording medium 160.Encryption-decryption processing portion 117, use this intrinsic information make content compression data A again biochemistry make unrenewable content compression data AN, make it to be saved in posting field 115.
Encryption-decryption processing portion 117, obtain the intrinsic information of external record medium 160, the intrinsic information of these external record medium 160 is externally in the ROM zone 164 of recording medium 160, by the unrenewable content compression data B of communication process portion 119 from 160 receptions of external record medium, use this intrinsic information, activate this unrenewable content compression data B once more, send it to compression-decompression portion 114.
Secondly, the work of the record regenerator 110 of embodiment 1 and the work of external record medium 160 illustrate with Fig. 3～Fig. 7.
Fig. 3 illustrates the order of regeneration digital broadcast signal and at the process flow diagram of the order of posting field 115 record, this digital broadcast signal is the signal that record regenerator 110 receives.
At first the user sets at tuner 111 and oneself wants the broadcasting channel (step 301) seen.Antenna 150 receiving digital broadcast signals (step 302), demodulation section 112 generate the TS (step 303) of the receiving channels that the user wishes from broadcast singal.TS demoder 113, the TS that decoding is generated makes content compression data A (step 304).Compression-decompression portion 114 judges that the user is the content of wishing that real-time audiovisual receives, and still wishes in posting field 115 these contents (step 305) of record.
(be) that the 114 decompression content compression data A of compression-decompression portion make view data and voice data (step 306) in the step 305 when the user wishes audiovisual.After this, Regeneration Treatment portion 116 exports (step 307) according to view data regeneration image and to display device 130, and according to audio data reproducing sound and to loudspeaker 131 outputs (step 307).When user's audiovisual finishes, compression-decompression portion 114 finishes audiovisual and handles (step 308).
On the other hand, when the user wishes to record (in the step 305 deny), compression-decompression portion 114 is at posting field 115 memory contents packed data A (step 309).When record finish after, compression-decompression portion 114 finishes to record processing (step 310).
Sell on the job order of Fig. 3 and the common market corresponding to the record regenerator of digital broadcasting without any difference.The present invention relates to use the method for stored content, the method for this storage is unrestricted.In embodiment 1, received terrestrial digital broadcasting receives by antenna 150, and is stored in posting field 115.Yet posting field 115 also can be stored the content of distributing according to the internet, and posting field 115 all right stored records are in the content of recording mediums such as DVD.In a word, content compression data A duplicates once principle to be stored in posting field 115 just passable as long as observe limit only.
Fig. 4 is that the step 310 that is illustrated in Fig. 3 is recorded and finished, content compression data A is recorded the process flow diagram of the order of external record medium 160, these data A is the data that are kept at regenerating unit 110. moreover, hereinafter can record and narrate, physical record is to the data of external record medium 160, not content compression data A itself, but the unrenewable content compression data B. of content-based packed data A
When the user thinks externally recording medium 160 recorded content packed data A, external record medium 160 are inserted into the slot 200 of record regenerator 110.After record regenerator 110 confirms that external record medium 160 have been inserted into, order authentication external record medium 160 (step 401,402) according to the rules.The order of regulation is for the interface of the slot 200 that is connected record regenerator 110 and the order of external record medium 160, and its formality step determines by the specification of each external record medium 160.Authentication is so long as carry out in proper order according to this, and its method is unrestricted.But according to above-mentioned authentication, between record regenerator 110 and the external record medium 160, must set up safe communication path (data line 143,144,145), this safe communication path does not have the stolen danger of data.Above-mentioned authentication order according to the rules finishes, confirm that external record medium 160 are regular external record medium, and under the situation that the safe communication path has been guaranteed, proceed the recording processing of the content compression data A (being actually unrenewable content compression data B) to outside recording medium 160, when authentification failure (in the step 403 deny), end recording processing the content compression data A (being actually unrenewable content compression data B) of outside recording medium 160.
When authentication success (in the step 403 be), the compression of record regenerator 110-decompression portion 114, read the content compression data A (step 404) that are kept at posting field 115, decompression content compression data A makes view data and voice data (step 405).Compression-decompression portion 114 compresses view data and the voice data that makes with other form, make content compression data AL (step 406), and this other form compression is the compression of doing in order to be recorded in external record medium 160.Other form is meant for example low form of bit rate such as MPEG4.That is, other form is the form for the low-quality data that make the original data of mass ratio.Moreover form also can be identical with original data, but the form that at this moment adopts is to be the form of the bit rate data lower than original data (quality is lower than the data of original data) with original data change.
The intrinsic information (step 407,408,409) of the external record medium 160 that connected is read by encryption-decryption processing portion 117.Intrinsic information is stored in the ROM zone 164 in the external record medium 160.If each external record media distribution is under the situation of ID etc., this ID can be regarded as the intrinsic information of external record medium 160.Also have, also can use this technology if imported CPRM copyright protection technology such as (can record the media content protection).Specify as followsly, encryption-decryption processing portion 117 sends intrinsic informations (step 407) to 160 requests of outside recording medium.External record medium 160 send to record regenerator 110 (step 408) according to this request with intrinsic information, and encryption-decryption processing portion 117 just obtains intrinsic information (step 409).
Encryption-decryption processing portion 117, intrinsic information encrypted content packed data AL with the external record medium 160 that obtain, add secret emissary's content compression data AL according to this and be set to unrenewable state and make unrenewable content compression data B (step 410), store posting field 115 into.Encryption-decryption processing portion 117 can utilize this mode to make content compression data AL be set to unrenewable state under the situation that has imported copyright protection technology such as CPRM and make unrenewable content compression data B.
Secondly, encryption-decryption processing portion 117, intrinsic information according to content compression data A and record regenerator 110, making key K A and key K B (step 411). key K A is identical key with key K B, as mentioned below, the record regenerator that this key K A and key K B are used to confirm to delete unrenewable content compression data B is a record regenerator 110, this unrenewable content compression data B is the data that are recorded in external record medium 160. the intrinsic information of record regenerator 110 is recorded in ROM zone 118. encryption-decryption processing portions 117, by using all different intrinsic informations such as ID of each machine, can make can not forge only-key K A and key K B. moreover, key K B is an example of the information relevant with the intrinsic information of record regenerator 110.
Encryption-decryption processing portion 117 with the intrinsic information encrypted content packed data A of the external record medium 160 that obtain, adds secret emissary's content compression data A according to this and is set to unrenewable state and makes unrenewable content compression data AN (step 412).Encryption-decryption processing portion 117 can utilize this mode to make unrenewable content compression data AN under the situation that has imported copyright protection technology such as CPRM.Also have, after the encrypted content packed data A, encryptions-decryption processing portion 117, delete encrypted before content compression data A and the intrinsic information of external record medium 160.According to above-mentioned, when having the intrinsic information that obtains external record medium 160 only, can decipher unrenewable content compression data AN.Promptly, because there is not the intrinsic information of external record medium 160 in the record regenerator 110, so can not the regenerative recording regenerating unit unrenewable content compression data AN in 110, the intrinsic information of these external record medium 160 is used to decipher unrenewable content compression data AN.
Posting field 115 is preserved unrenewable content compression data AN and the key K A (step 413) that is made.
Secondly, encryption-decryption processing portion 117 makes key K B move to external record medium 160 (step 414) from record regenerator 110, records the posting field 163 (step 415) in the external record medium 160.
Then, encryption-decryption processing portion 117, by communication process portion 119, make unrenewable content compression data B move to external record medium 160 (step 416) from record regenerator 110, record the posting field 163 (step 417) in the external record medium 160.
According to this work, as shown in Figure 5, the posting field 115 in store unrenewable content compression data AN and the key K A of record regenerator 110, the posting field 163 in store unrenewable content compression data BN and the key K B of external record medium 160.Unrenewable content compression data AN and unrenewable content compression data B are the data of same detail.Yet, unrenewable content compression data AN is the data (data that quality is high) that have high bit rate with content compression data A equally, in contrast to this, unrenewable content compression data B is the bit rate data lower than the bit rate of content compression data A (low-quality data).
Unrenewable content compression data AN and unrenewable content compression data B are arranged to unrenewable state by the intrinsic information of external record medium 160.Therefore, unrenewable content compression data AN could demodulation when having only external record medium 160 to be connected record regenerator 110, and unrenewable content compression data B has only with the intrinsic information of external record medium 160 could demodulation matching used the time.Because record regenerator 110 and external record medium 160 all exist the content of same detail, technical is to have implemented to duplicate, and but, has only a side content can regenerate by activating, and the opposing party can not regenerate.Therefore, user and copyright owner can be regarded as and carried out and mobile phase processing together.
According to above-mentioned, finish content compression data A (being actually unrenewable content compression data B) is recorded the processing of external record medium 160, these content compression data A is the content compression data A that is recorded in record regenerator 110.
Fig. 6 illustrates the process flow diagram that utilizes the order record regenerating unit 630 reproducing contents, and this content is with the journal shown in Figure 4 content of recording medium 160 externally.
Externally the purpose of recording medium 160 recorded contents is to use the family to utilize record regenerator 110 machine with regeneration function in addition to come this content of audiovisual.Therefore in the explanation of Fig. 6, it is different devices with record regenerator 110 that imagination is recorded regenerating unit 630.But it is also passable to record regenerating unit 630 and record regenerator 110 and be identical device.
Zai Sheng order to start with, record regenerating unit 630 and authenticate (step 401 with external record medium 160,402,403). this order and step 401 illustrated in fig. 4,402,403 is identical. and external record medium 160 are not (in the step 403 not) under the situation of regular external record medium, finish Regeneration Treatment.
Secondly, record the intrinsic information (step 407,408,409) that regenerating unit 630 obtains external record medium 160.This order and the step 407 of Fig. 4,408,409 is identical.
Secondly, record regenerating unit 630, send data B (step 602) to outside recording medium 160 requests, these data B is the content that determines in step 601, unrenewable content compression data B.External record medium 160 are according to this request, unrenewable content compression data B is sent to record regenerating unit 630 (step 603), record regenerating unit 630 and receive unrenewable content compression data B (step 604).
Record regenerating unit 630,,, utilize the intrinsic information of the external record medium 160 that obtain earlier to activate (step 605) the unrenewable content compression data B that is obtained by being arranged on inner encryption-decryption processing portion 117.If under the situation that can not activate (in the step 606 deny), finish Regeneration Treatment.In the case, the intrinsic information of the external record medium 160 that are used when making unrenewable content compression data B and, the intrinsic information of the external record medium that are used in order to activate unrenewable content compression data B may be different information.The intrinsic information of external record medium is recorded in ROM zone 164, can not rewrite.Therefore, the different possibility height of external record medium that uses in the explanation of the external record medium that use in the explanation of Fig. 6 and Fig. 4.This is the phenomenon that the content replication in the external record medium 160 is produced during to other external record medium, means the behavior of having carried out the violation copyright protection.Use the intrinsic information of external record medium 160 when content can not be regenerated, therefore when activating this content, just must need this intrinsic information.Therefore,, content can not regenerate, so can prevent to duplicate itself even being replicated but.
Under the situation that unrenewable content compression data B is activated in step 605 (in the step 606 being), this just means that unrenewable content compression data B is the data of using in the explanation of Fig. 4 that are recorded in external record medium 160 really, so Regeneration Treatment is proceeded.Record regenerating unit 630 according to the unrenewable content compression data B of compression-decompression portion 114 decompressions, make view data and voice data and regenerate (step 306,307,308).The order of regeneration and the step 306 of Fig. 3,307,308 is identical.
Fig. 7 illustrates the order that the content that is recorded in external record medium 160 is got back to record regenerator 110 imaginaryly, and the deletion record process flow diagram of the order of the content of recording medium 160 externally.
Record regenerator 730 had both referred to record regenerator 110, also referred to this device 110 record regenerator in addition.Record regenerator beyond record regenerator 110 and this device 110, though separating appears in the processing in step 711, other order is identical.Also have, also comprise regenerating unit in the record regenerator beyond the record regenerator 110.But this regenerating unit has delete function, and deletion record is the content of recording medium 160 externally.
As the order of regeneration beginning, record regenerator 730 and external record medium 160 authenticate (step 401,402,403).This order and step 401 illustrated in fig. 4,402,403 is identical.External record medium 160 are not (in the step 403 not) under the situation of regular external record medium, finish Regeneration Treatment.
Secondly, record regenerator 730 confirms selected content is whether unrenewable content compression data B is kept in the external record medium 160 (step 702).Particularly, the encryption of record regenerator 730-decryption processing portion 117, request external record medium 160 send following information (step 702), and whether this information illustrates unrenewable content compression data B and is kept in the external record medium 160.External record medium 160 according to this request, will illustrate the information of existence, send to record regenerator 730 (step 703), and encryption-decryption processing portion 117 receives the information (step 704) that existence is shown by communication process portion 119 from external record medium 160.
Unrenewable content compression data B is kept under the situation in the external record medium 160 (in the step 705 being), forwards step 706 to.On the other hand, unrenewable content compression data B is not kept under the situation in the external record medium 160 (in the step 705 not), the end-of-job of record regenerator 730.
Unrenewable content compression data B is kept under the situation in the external record medium 160 (in the step 705 being), record regenerator 730 request deletion unrenewable content compression data B (step 706).Particularly, the encryption of record regenerator 730-decryption processing portion 117 sends to external record medium 160 (step 706) with the request of deleting unrenewable content compression data B.External record medium 160 are deleted unrenewable content compression data B (step 707) according to this request.Can effectively utilize the memory capacity of external record medium 160 like this.When unrenewable content compression data B from external record medium 160 deleted (step 707), then forward step 708 to.
Record regenerator 730 requests obtain key K B, and the unrenewable content compression data B of this key K B and deletion is (step 708) in pairs.Particularly, the encryption of record regenerator 730-decryption processing portion 117 sends to external record medium 160 (step 708) with the transmission request of key K B.External record medium 160 send to record regenerator 730 (step 709) according to this request with key K B.Encryption-decryption processing portion 117 receives key K B (step 710) from external record medium 160.
Whether the key K A interior with being stored in record regenerator 730 of encryption-decryption processing portion 117, the key K B that judge to obtain consistent (step 711).Under key K A and the inconsistent situation of key K B (in the step 711 deny) work of end record regenerating unit 730 and external record medium 160.Can not obtain at step 710 record regenerator 730 under the situation of key K B, and key K A is not stored under the situation in the record regenerator 730, encryption-decryption processing portion 117 all handles with key K A and the inconsistent situation of key K B.
On the other hand, under the key K A situation consistent (in the step 711 being) with key K B, because record regenerator 730 is devices identical with record regenerator 110,, enter step 712 so the contents in the external record medium 160 can turn back to record regenerator 730 (110).
The encryption of record regenerator 730 (110)-decryption processing portion 117, the key K B (step 712) in the indication deletion external record medium 160.Receive the external record medium 160 deletion key K B (step 713) of indication.Like this, all information in the external record medium 160 are deleted.And then record regenerator 730 (110) is also deleted the own key K A (step 714) that is kept.
Then, the encryption of record regenerator 730 (110)-decryption processing portion 117, the intrinsic information (step 407,408,409) of acquisition external record medium 160.Preparation method and step 407 illustrated in fig. 4,408,409 is identical.Record regenerator 730 (110) intrinsic information of external record medium 160, the unrenewable content compression data AN (step 715) in activation record zone 115, the intrinsic information of these external record medium 160 are the information that is obtained by encryption-decryption processing portion 117.
According to above-mentioned, content compression data A is recorded in the posting field 115 of record regenerator 730 (110), finishes the processing of returning of content, and it is the processing that turns back to record regenerator 730 (110) from external record medium 160 that the returning of this content handled imaginaryly.
As above-mentioned, the record regenerator 110 of embodiment 1 activates under the situation of content compression data A again, does not use unrenewable content compression data B, but activates the unrenewable content compression data AN (with reference to Fig. 5) that is stored in posting field 115.Unrenewable content compression data AN is with the data of unrenewable content compression data B same detail and is the same high data of bit rate of bit rate and content compression data A.According to these, can realize the imaginary processing of returning, according to this imaginary return processing can not be subjected to Fig. 4 explanation make unrenewable content compression data B according to content compression data A the time image quality that produces and tonequality the influence of reduction.
In sum, the record regenerator 110 of embodiment 1, when the unrenewable content compression data B of 160 records of recording medium externally, deletion content compression data A, but stay the same high unrenewable content compression data AN with content compression data A bit rate of bit rate, this unrenewable content compression data AN can not biochemically again make content compression data A.And when external record medium 160 were inserted into the slot 200 of record regenerator 110, record regenerator 110 utilized the intrinsic information of external record medium 160, and unrenewable content compression data AN is activated.Like this, can recover the high content compression data A of image quality and tonequality.
Also have, in step 711, because record regenerator 730 is different from record regenerator 110, under key K A and the inconsistent situation of key K B (in the step 711 deny), even deletion record is the unrenewable content compression data B (step 707) of recording medium 160 externally, key K B still stays external record medium 160.When afterwards external record medium 160 being inserted into the slot 200 of record regenerator 110, because external record medium 160 can send to key K B record regenerator 110, so can activate unrenewable content compression data AN, obtain content compression data A, unrenewable content compression data AN is the data that are recorded in the posting field 115 of record regenerator 110.When not needing unrenewable content compression data B, the user can delete unrenewable content compression data B, the posting field 163 of external record medium 160 can be used to preserve other data.Because the information size of key K B is significantly smaller than unrenewable content compression data B,, just can use the posting field 163 of external record medium 160 more efficiently so delete unrenewable content compression data B.
Moreover, at above-mentioned embodiment 1, the content compression data A that is recorded in record regenerator 110 is recorded under the situation of external record medium 160, be that record regenerator 110 reduction bit rates record external record medium 160.Yet, also can be that record regenerator 110 does not reduce bit rate to outside recording medium 160 transmission content compression data A, and come record by the bit rate of external record medium 160 reduction content compression data A.And, can also be that record regenerator 110 does not reduce bit rate to outside recording medium 160 transmission content compression data A, external record medium 160 do not reduce bit rate yet and come recorded content packed data A.
Also have, step 706 at Fig. 7, in 707, the request that unrenewable content compression data B will delete in the encryption of record regenerator 730-decryption processing portion 117 sends to external record medium 160 (step 706), and external record medium 160 are according to this request deletion unrenewable content compression data B (step 707).Yet unrenewable content compression data B can be not deleted, is in unrenewable state and can yet but change to.These can be undertaken by encryption-decryption processing portion 117.Generally speaking, under the situation that unrenewable content compression data AN is reproduced and unrenewable content compression data B be recorded under the situation of external record medium 160, be recorded in the unrenewable content compression data B of external record medium 160 so long as to be changed to unrenewable state just passable.
Also have, external record medium 160, when the unrenewable content compression data B of record, can not record key K B as shown in Figure 5, but the group that writes down following identifier composition shown in Figure 8 also can, the group that above-mentioned identifier is formed is the group that the identifier (original device ID) of the identification device that sends unrenewable content compression data B and the identifier (content ID) of discerning unrenewable content compression data B are formed. under this situation, original device ID is the identifier of identification record regenerating unit 110. above-mentioned group illustrates the resume that external record medium 160 once write down unrenewable content compression data B. also have, encryption-decryption processing portion 117, when external record medium 160 have when the resume that write down unrenewable content compression data B are shown, judge that record regenerator 730 is machines identical with record regenerator 110, judge promptly that once the fact that recording medium 160 externally write down unrenewable content compression data B exists, encryption-decryption processing portion 117, obtain the intrinsic information of external record medium 160, the unrenewable content compression data AN that regenerates is also passable.
Also have,, used encryption-decryption processing portion 117 as the identifying unit of record regenerator of the present invention, yet also can have encryptions-decryption processing portion 117 other identifying unit in addition at above-mentioned embodiment 1.
(embodiment 2)
Secondly, the record regenerator 110 and the external record medium 160 of embodiment 2 are described.
The structure of the record regenerator 110 of embodiment 2 is identical with the structure of the record regenerator 110 of embodiment 1.The structure of the external record medium 160 of embodiment 2 is identical with the structure of the external record medium 160 of embodiment 1.Below, the work of the record regenerator 110 and the external record medium 160 of embodiment 2 is described with Fig. 9～Figure 11.
In embodiment 2 explanations, the content compression data A that is stored in record regenerator 110 is recorded the work of regenerating after the external record medium 160.Being operated in the embodiment 1 when content compression data A stores record regenerator 110 into illustrates, therefore omits this explanation.
Fig. 9 illustrates the process flow diagram that content compression data A is recorded the order of external record medium 160, and these data A is the data that are kept at record regenerator 110.Moreover physical record is the data of recording medium 160 externally, are not content compression data A itself, but the unrenewable content compression data B that content-based packed data A makes.
When the user thinks externally recording medium 160 recorded content packed data A, external record medium 160 are inserted into the slot 200 of record regenerator 110.Record regenerator 110 has confirmed that external record medium 160 have been inserted into after the slot, order authentication external record medium 160 (step 401,402,403) according to the rules.The step 401 of this order and Fig. 4 explanation, 402,403 is identical.After this authentication order according to the rules finishes, have external record medium 160 only and be confirmed to be and be regular external record medium and guaranteed under the situation in safe communication path, just proceed processing outside recording medium 160 recorded content packed data A (being actually unrenewable content compression data B).Under the situation of authentification failure (in the step 403 deny), end processing outside recording medium 160 recorded content packed data A (being actually unrenewable content compression data B).
Under the situation of authentication success (in the step 403 be), the compression of record regenerator 110-decompression portion 114, read the content compression data A (step 404) that are kept at posting field 115, decompression content compression data A makes view data and voice data (step 405).Compression-decompression portion 114, view data and voice data with making compress with other form, make content compression data AL (step 406), and compressing with other form is for recording medium 160 records externally.Other form is meant such as the low form of bit rates such as MPEG4.That is, other form is the form for the low-quality data that make the original data of mass ratio.Moreover form also can be identical with original data, but the form that at this moment adopts is to be the form of the bit rate data lower than original data (quality is lower than the data of original data) with original data change.
Intrinsic information (the step 407 of connected external record medium 160 is read by encryption-decryption processing portion 117; 408; 409) if. intrinsic information is stored in ROM zone 164. each external record media distribution in the external record medium 160 under the situation of ID etc.; can regard this ID is the intrinsic information of external record medium 160. also have; if also can utilize this mode when having imported copyright protection technology such as CPRM. specify as follows; encryption-decryption processing portion 117 sends intrinsic information (step 407) to outside recording medium 160 requests. and external record medium 160 send intrinsic information (step 408) according to above-mentioned request to record regenerator 110, and encryption-decryption processing portion 117 just obtains intrinsic information (step 409).
Encryption-decryption processing portion 117, intrinsic information encrypted content packed data AL with the external record medium 160 that obtain, adding secret emissary's content compression data AL according to this can not be biochemical again, makes unrenewable content compression data B (step 410), stores posting field 115 into.Encryption-decryption processing portion 117, when having imported copyright protection technology such as CPRM, can utilize this mode make content compression data AL again biochemistry make unrenewable content compression data B.
Encryption-decryption processing portion 117, intrinsic information encrypted content packed data A with the external record medium 160 that obtain, according to this add secret emissary's content compression data A again biochemistry make unrenewable content compression data AN (step 901), store posting field 115 (step 902) into.Encryption-decryption processing portion 117 can utilize this mode when having imported copyright protection technology such as CPRM, make unrenewable content compression data AN.Also have, after the encrypted content packed data A, encryptions-decryption processing portion 117, delete encrypted before content compression data A and the intrinsic information of external record medium 160.According to these, record regenerator 110 has only when obtaining the intrinsic information of external record medium 160, can decipher unrenewable content compression data AN.That is, there is not the intrinsic information of the external record medium 160 that are used to decipher unrenewable content compression data AN in the record regenerator 110, so the unrenewable content compression data AN in the record regenerator 110 can not regenerate.
Also have, encryption-decryption processing portion 117, make and to confirm that unrenewable content compression data AN and unrenewable content compression data B are the information (identical content confirmation) (step 903) that is made according to same content (content compression data A), and preserve this information (step 904) at record regenerator 110.In other words, the identical content confirmation is that the details of unrenewable content compression data AN and the identical information of details of unrenewable content compression data B are shown.The identical content confirmation, for example shown in Figure 10 can be the table that the identifier of original data is associated with the identifier that is recorded in outside data.Unrenewable content compression data AN is associated with unrenewable content compression data B in the hurdle of Figure 10 (1).
Secondly, encryption-decryption processing portion 117, make unrenewable content compression data B move to external record medium 160 (step 905) by communication process portion 119, and record the posting field 163 (step 905) in the external record medium 160 from record regenerator 110.
The details of unrenewable content compression data AN is identical with the details of unrenewable content compression data B.Yet, unrenewable content compression data AN is a bit rate and the same high data of bit rate (data that quality is high) of content compression data A, in contrast to this, unrenewable content compression data B is the data (low-quality data) that bit rate is lower than the bit rate of content compression data A.
Unrenewable content compression data AN and unrenewable content compression data B use the intrinsic information of external record medium 160 to be set to unrenewable state.Therefore, have that external record medium 160 are connected under the situation of record regenerator 110 can the unrenewable content compression data of demodulation AN only, and unrenewable content compression data B have only with the intrinsic information of external record medium 160 can demodulation matching used the time.All there are the content of same detail in record regenerator 110 and external record medium 160, and technical is to duplicate, yet, always have only a content to activate and to regenerate, other content is unrenewable.Therefore, the user and have the copyright owner can be regarded as carried out and mobile phase with processing.
According to above-mentioned, the processing that the content compression data A (being actually unrenewable content compression data B) that is recorded in record regenerator 110 is recorded external record medium 160 finishes.
Figure 11 illustrates to utilize to record regenerating unit 1130, and regeneration is with journal shown in Figure 9 process flow diagram to the order of the content of external record medium 160.
As the order of regeneration beginning, record regenerating unit 1130 and authenticate (step 401,402,403) with external record medium 160.The step 401 of said sequence and Fig. 4 explanation, 402,403 is identical.External record medium 160 are not (in the step 403 not) under the situation of regular external record medium, finish Regeneration Treatment.
Secondly, record the intrinsic information (step 407,408,409) that regenerating unit 1130 obtains external record medium 160.The step 407 of said sequence and Fig. 4 explanation, 408,409 is identical.
Secondly, record regenerating unit 1130, being sent in the content that step 1101 determines to outside recording medium 160 requests is unrenewable content compression data B (step 1102).External record medium 160 send unrenewable content compression data B (step 1103) according to above-mentioned request to recording regenerating unit 1130, receive unrenewable content compression data B (step 1104) and record regenerating unit 1130.
Record regenerating unit 1130 according to the identical content confirmation that makes in step 903, unrenewable content compression data B that affirmation receives and unrenewable content compression data AN are (step 1105) according to same content made.That is, record the encryption-decryption processing portion 117 of regenerating unit 1130, according to the identical content confirmation, whether the details of the unrenewable content compression data B that confirm to receive and the details of unrenewable content compression data AN identical (step 1105).
When the details of the details of the unrenewable content compression data B that receives and unrenewable content compression data AN is confirmed to be is under the situation of identical details (being) in the step 1106, can judge that to record regenerating unit 1130 identical with record regenerator 110.At this moment, record regenerating unit 1130, as the content choice of actual reproduction unrenewable content compression data AN (step 1107).
On the contrary, the details of the unrenewable content compression data B that receives and the details of unrenewable content compression data AN are not confirmed to be and are under the situation of identical details (in the step 1106 not), can judge that recording regenerating unit 1130 is record regenerators different with record regenerator 110, perhaps judge record regenerating unit 1130 be record regenerator 110 but unrenewable content compression data AN is not in recording regenerating unit 1130.At this moment, record regenerating unit 1130, as the content choice of actual reproduction unrenewable content compression data B (step 1108).
Record regenerating unit 1130; by being arranged on inner encryption-decryption processing portion 117; to unrenewable content compression data AN or the unrenewable content compression data B that selects; the intrinsic information that uses the external record medium 160 that obtain earlier activate (step 1109) if. under the situation that can not activate (in the step 1110 not); finish Regeneration Treatment. under this situation; when making selected unrenewable content compression data AN or making unrenewable content compression data B the intrinsic information of employed external record medium 160 and; the intrinsic information of employed external record medium might be different when activating selected unrenewable content compression data AN or activating unrenewable content compression data B. the intrinsic information of external record medium is recorded in ROM zone 164; and can not rewrite. therefore; the different possibility height of external record medium that uses in the external record medium that use in the explanation of Figure 11 and the explanation of Fig. 9. this is the phenomenon that the content replication in the external record medium 160 is produced during to other external record medium; mean the behavior of having carried out violating copyright protection. owing to use the intrinsic information of external record medium 160 when content can not be regenerated; so just need this intrinsic information when activating this content. therefore; even being replicated, content can not regenerate, so can prevent to duplicate itself.
Under the situation that selecteed unrenewable content compression data AN or unrenewable content compression data B have been activated in step 1107 or 1108 (in the step 1110 being), proceed Regeneration Treatment.Record regenerating unit 1130,,, decompress, make view data and voice data regenerate (step 306,307,308) selecteed unrenewable content compression data AN or unrenewable content compression data B by compression-decompression portion 114.The step 306 of said sequence and Fig. 3,307,308 is identical.
As mentioned above, at embodiment 2, it is that unrenewable content compression data AN is reproduced under the situation of identical details that the details of the details of unrenewable content compression data B and unrenewable content compression data AN is confirmed to be.Also have, the unrenewable content compression data B in the external record medium 160 is not deleted.
Only suppose the part of content packed data A is set to unrenewable state, and reduce image quality and tonequality records external record medium 160, afterwards whole situation of reproducing contents packed data A.
Under this situation, according to embodiment 2, be arranged to unrenewable state content compression data A a part of details and, the details that is recorded in the data of external record medium 160 is confirmed to be when being identical details, and a part of details that is configured to the content compression data A of unrenewable state is reproduced.Thereby all content compression data A regenerate with same high image quality and high tone quality in overall process.That is, instability can not take place in the quality of the content of being regenerated.
Also have, the data that are recorded in external record medium 160 are not deleted.Only the part of content packed data A is reduced image quality and tonequality records external record medium 160, whole for reproducing contents packed data A afterwards, the data that can consider to record external record medium 160 move to the method for original recording medium.Under this situation, carry out when mobile, be recorded in the data of external record medium 160, just recording medium 160 externally.Yet according to embodiment 2, the data that record external record medium 160 are not deleted.Thereby, the data that are recorded in external record medium 160 are remained on external record medium 160, be used for the time that recording medium 160 externally writes down identical data once more so can save.That is, the user does not need to wait for that identical data store the processing of external record medium 160 once more into.
Like this, even the part of records of content compression data A arrives external record medium 160, the whole of content compression data A regenerate with same high image quality and high tone quality in overall process.Also have, under whole situations about being reproduced of unrenewable content compression data A, remain on external record medium 160, so the processing that does not need recording medium 160 externally to write down identical data once more because will be recorded in the data of external record medium 160.
Moreover, constitute the tuner 111 of the record regenerator 110 of above-mentioned embodiment 1 and 2, demodulation section 112, TS demoder 113, compression-decompression portion 114, posting field 115, Regeneration Treatment portion 116, encryption-decryption processing portion 117, ROM zone 118, part or all of communication process portion 119 can be realized by an integrated circuit (integrated chip).
The record regenerator that the present invention relates to, be useful on after the content of preserving digital television broadcasting earlier, make the image quality and the tonequality reduction of this content be saved in the external record medium, the user is in this content of mobile terminal apparatus audiovisual, and after this returns to home with high image quality and the high tone quality situation of this content of audiovisual once more.Particularly, the record regenerator that the present invention relates to as the literary property of both protecting content, provides the device of content with high image quality and high tone quality again and useful, and this content is the digital content of being protected by literary property that is recorded in the external record medium.
Claims (3)
1. record regenerator comprises:
Record cell is in the 1st recording medium content;
Output unit, to the 2nd recording medium output related content, this related content has the details identical with the content that is recorded in above-mentioned the 1st recording medium;
Intrinsic information obtains the unit, obtains the intrinsic information of above-mentioned the 2nd recording medium;
Compressed and decompressed portion, be used for to the foregoing read from above-mentioned the 1st recording medium promptly the 1st compressed content compress or decompress and change the bit rate of the 1st compressed content;
The 1st Status Change unit, when above-mentioned output unit with above-mentioned related content under the situation of above-mentioned the 2nd recording medium output, utilizing the intrinsic information of above-mentioned the 2nd recording medium, is that the intrinsic information of above-mentioned the 2nd recording medium of unfavorable usefulness is with regard to unrenewable state with the content alteration that is recorded in above-mentioned the 1st recording medium; And
Regeneration unit, after the content alteration that will be recorded in above-mentioned the 1st recording medium in above-mentioned the 1st Status Change unit is unrenewable state, above-mentioned intrinsic information obtains under the situation of intrinsic information that the unit obtains above-mentioned the 2nd recording medium, utilize the intrinsic information of above-mentioned the 2nd recording medium, regenerative recording is in above-mentioned the 1st recording medium and content that change to unrenewable state
Above-mentioned compressed and decompressed above-mentioned the 1st compressed content of reading from above-mentioned the 1st recording medium decompressed after, and content that obtain decompressed to this compressed and generated the 2nd compressed content, the bit rate of the 2nd compressed content changes to below the bit rate of above-mentioned the 1st compressed content
Above-mentioned the 1st Status Change unit comes above-mentioned the 2nd compressed content encrypted according to the intrinsic information of the external record medium that obtained above-mentioned the 2nd recording medium of conduct that the unit obtains by above-mentioned intrinsic information and obtains the 1st encrypted content, by above-mentioned output unit the 1st encrypted content is outputed to this external record medium as above-mentioned related content
Above-mentioned the 1st Status Change unit will encrypt and obtain the 2nd encrypted content being recorded in above-mentioned the 1st compressed content in above-mentioned the 1st recording medium according to the intrinsic information that is obtained the said external recording medium that the unit obtains by above-mentioned intrinsic information, and the 2nd encrypted content recorded above-mentioned the 1st recording medium, with as the above-mentioned content that changes to unrenewable state, and delete above-mentioned the 1st compressed content in above-mentioned the 1st recording medium.
2. record regenerator as claimed in claim 1 is characterized in that,
Above-mentioned the 1st Status Change unit also the key information that generates according to the intrinsic information that is stored in above-mentioned the 1st compressed content in above-mentioned the 1st recording medium and above-mentioned record regenerator, records above-mentioned the 1st recording medium and said external recording medium.
3. record regeneration method comprises:
Recording step is in the 1st recording medium content;
The output step, to the 2nd recording medium output related content, this related content has the details identical with the content that is recorded in above-mentioned the 1st recording medium;
Intrinsic information obtains step, obtains the intrinsic information of above-mentioned the 2nd recording medium;
Compressed and decompressed step, be used for to the foregoing read from above-mentioned the 1st recording medium promptly the 1st compressed content compress or decompress and change the bit rate of the 1st compressed content;
The Status Change step, when above-mentioned output step with above-mentioned related content under the situation of above-mentioned the 2nd recording medium output, utilizing the intrinsic information of above-mentioned the 2nd recording medium, is that the intrinsic information of above-mentioned the 2nd recording medium of unfavorable usefulness is with regard to unrenewable state with the content alteration that is recorded in above-mentioned the 1st recording medium; And
Regeneration step, after the content alteration that above-mentioned Status Change step will be recorded in above-mentioned the 1st recording medium is unrenewable state, above-mentioned intrinsic information obtains under the situation of intrinsic information that step obtains above-mentioned the 2nd recording medium, utilize the intrinsic information of above-mentioned the 2nd recording medium, regenerative recording is in above-mentioned the 1st recording medium and content that change to unrenewable state
After above-mentioned compressed and decompressed step decompresses to above-mentioned the 1st compressed content of reading from above-mentioned the 1st recording medium, and content that obtain decompressed to this compressed and generated the 2nd compressed content, the bit rate of the 2nd compressed content changes to below the bit rate of above-mentioned the 1st compressed content
Above-mentioned the 1st Status Change step is come above-mentioned the 2nd compressed content encrypted according to the intrinsic information of the external record medium that obtained above-mentioned the 2nd recording medium of conduct that step obtains by above-mentioned intrinsic information and is obtained the 1st encrypted content,
In above-mentioned output step the 1st encrypted content is outputed to this external record medium as above-mentioned related content,
Also will come to encrypt and obtain the 2nd encrypted content in above-mentioned the 1st Status Change step according to the intrinsic information that obtains the said external recording medium that step obtains by above-mentioned intrinsic information to being recorded in above-mentioned the 1st compressed content in above-mentioned the 1st recording medium, and the 2nd encrypted content recorded above-mentioned the 1st recording medium, with as the above-mentioned content that changes to unrenewable state, and delete above-mentioned the 1st compressed content in above-mentioned the 1st recording medium.
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| Application Number | Priority Date | Filing Date | Title |
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| JP170418/2004 | 2004-06-08 | ||
| JP2004170418A JP4393928B2 (en) | 2004-06-08 | 2004-06-08 | Recording apparatus, reproducing apparatus, recording method, and program |
| JP2005028302A JP4928733B2 (en) | 2005-02-03 | 2005-02-03 | Recording / reproducing apparatus, integrated circuit, recording / reproducing method, and program |
| JP028302/2005 | 2005-02-03 | ||
| PCT/JP2005/008344 WO2005122167A1 (en) | 2004-06-08 | 2005-05-06 | Recording/reproduction device |
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| CN1965363A CN1965363A (en) | 2007-05-16 |
| CN1965363B true CN1965363B (en) | 2010-05-12 |
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| CN2005800185897A Expired - Fee Related CN1965363B (en) | 2004-06-08 | 2005-05-06 | Recording/reproduction device |
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| US8218944B2 (en) | 2004-06-08 | 2012-07-10 | Panasonic Corporation | Recording/reproduction device |
| JP4928733B2 (en) * | 2005-02-03 | 2012-05-09 | パナソニック株式会社 | Recording / reproducing apparatus, integrated circuit, recording / reproducing method, and program |
| KR101538741B1 (en) * | 2009-10-21 | 2015-07-22 | 삼성전자주식회사 | Data storage medium having security function and output apparatus therefor |
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| CN1244706A (en) * | 1998-06-26 | 2000-02-16 | 索尼公司 | Recording, store medium, recording and reproducing device and method, and provided medium |
| CN1460940A (en) * | 2002-05-17 | 2003-12-10 | 日本电气株式会社 | Content using method and system, servicer and electronic equipment for said system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1244706A (en) * | 1998-06-26 | 2000-02-16 | 索尼公司 | Recording, store medium, recording and reproducing device and method, and provided medium |
| CN1460940A (en) * | 2002-05-17 | 2003-12-10 | 日本电气株式会社 | Content using method and system, servicer and electronic equipment for said system |
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Also Published As
| Publication number | Publication date |
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| CN1965363A (en) | 2007-05-16 |
| JP2005353128A (en) | 2005-12-22 |
| JP4393928B2 (en) | 2010-01-06 |
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