CN100476842C - Portable music player system for protecting digital content copyright - Google Patents
Portable music player system for protecting digital content copyright Download PDFInfo
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- CN100476842C CN100476842C CNB2006100825936A CN200610082593A CN100476842C CN 100476842 C CN100476842 C CN 100476842C CN B2006100825936 A CNB2006100825936 A CN B2006100825936A CN 200610082593 A CN200610082593 A CN 200610082593A CN 100476842 C CN100476842 C CN 100476842C
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Abstract
An exclusive portable music player protecting copyright of digital content consists of exclusive portable music player having hardware with unique device identification code and enabling to play music file in compressed format, access interface for providing interface between said player an on-line music server, on-line music server for pre-storing multiple music file in compressed format and multiple playing-permission and corresponding table.
Description
Technical field
The present invention relates to a kind of technology of digital content protection, refer to a kind of exclusive portable music player system of protecting the digital content literary property especially.
Background technology
Because the quick evolution of manufacture of semiconductor makes the function of electronic product strengthen more in the past, the size that also makes electronic product simultaneously is invariably towards light, thin, little direction evolution.Also, support portable music player (Portable Audio Player) to emerge with compact form because the consumer electronics technology progresses greatly day by day, and universal day by day.
The universal digital music that impels of portable music player more tends to carry with individualized.And the form of digital music wherein, the compress technique and the technical flow general character according to adopting can be divided into general MP3 format and exclusive music file formats two big classes.The advantage of the digital music of general MP3 format is that file is shared and scatters easily, and its shortcoming is to cause the dispute of literary piracy easily.Its situation of the digital music of exclusive music file formats is then just in time opposite.
Flourish along with the Internet, MP3 music format and digital content (Digital Content), online digital music service (Online Digital Music Service) has been regarded as following important trend.Therefore the importance of online digital music literary property (Digital Music Copyright) also promotes day by day.A kind of business model with point-to-point (peer-to-peer) Online Music access method can allow the user in the enjoy music file, also the music file distribution can be given other people and share.But the business model of this point-to-point Online Music access method causes the dispute of invading the music literary property easily.
Cause the problem of invading the music literary property at the Online Music access method, at U.S. USP 7,039, in No. 615 patent announcements " Retail transactions involving digital content ina digital rights management (DRM) system ", Microsoft (Microsoft Corp.) releases a digital copyright management, and (Digital Rights Management, DRM) software platform is to solve the problem of digital music literary property.
This digital copyright management (DRM) software is to link by a server and client side.And be unit with every first song, the corresponding content key (content key) that produces.That is during from this downloaded one first song, also download the content key of this song via the Internet simultaneously when client.At same first song, the content key that each download obtains is identical.The per song file corresponding content key of need arranging in pairs or groups just can be play.Therefore transmitting and obtaining in the process of content key,, needing be protected with PKI spoon (public key) and private key spoon (privatekey) for preventing to be cracked.
The advantage of this digital copyright management (DRM) software is to transmit the digital content (Digital Content) that a user subscribes to safely, and plays this digital content on a computing machine, a mancarried device or a network equipment of appointment.Yet its shortcoming is to need additionally to use public-key spoon in the transmission course so that the content key is protected.Yet, behind the content key of receiving music file and correspondence, also must additionally carry out computing, therefore the disappearance of delay (insertin playback delay) is arranged when playback of songs easily.
Because this content key is corresponding to a specific music song, therefore need to use encryption method, as PKI spoon and private key spoon, the content key is protected.In case but its encryption mechanism is cracked, the content key can be obtained arbitrarily, and this song song also no longer is protected.This digital copyright management (DRM) though software engineering can be protected digital content copyright; yet it cooperates the protected mode of PKI spoon and private key spoon with the standard compression form; security and efficient is all not enough to some extent, more limited the rights and interests that the user shares digital content file on the other hand.Therefore, the method for aforementioned engagement and connector means copyright protection still has many disappearances and gives improved necessity.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of exclusive portable music player system of protecting the digital content literary property; cause the problem of invading the music literary property thereby can solve the Online Music access method, can protect online digital content (Digital Content) simultaneously.
The object of the present invention is to provide a kind of exclusive portable music player system of protecting the digital content literary property; thereby can solve the efficiency of use public-key spoon and the protected mode of private key spoon, avoid known technology to limit the problem that the user shares digital content simultaneously.
The present invention proposes a kind of exclusive portable music player system of protecting the digital content literary property, and it comprises an exclusive portable music player (PPAP; Proprietary Portable AudiosPlayer), an access interface (WAI; Web Access Interface), reach an Online Music server (OMS; Online Music Server).This exclusive portable music player has the unique device identification code of a hardware (Hardware Unique Device ID), and can play the music file of a compressed format, this exclusive portable music player provide a mark admissible keep in mind pattern, when this exclusive portable music player be mark admissible keep in mind during pattern, it can pass through one first transmission medium, link with an Online Music server (OMS), play permission (PlaybackToken) to obtain, thereby allow its corresponding music file to be played; This access interface provides the interface between this Online Music server (OMS) of this portable music player (PPAP) access, this portable music player (PPAP) is chosen the broadcast permission or the music file of appointment, notifies this Online Music server (OMS) to carry out access via this first transmission medium via this access interface (WAI); This Online Music server the prestore music file of a plurality of compressed formats, broadcast permission and a corresponding tables corresponding with the music file of these a plurality of compressed formats, this Online Music server provide a mark admissible keep in mind pattern, when this Online Music server is received a broadcast enabling signal by this access interface, this Online Music server produces a broadcast permission corresponding to particular music file, and upgrade this corresponding tables, should play permission again and be sent to an exclusive portable music player (PPAP) via this first transmission medium.
Wherein, this exclusive portable music player more provides a music file sharing model, and when this exclusive portable music player was the music file sharing model, it can transmit the music file of desiring to share with this access interface by one second transmission medium.
Wherein, this Online Music server provides one to lease the music file sharing model of relation, when this Online Music server receives that by this access interface enabling signal (releasePlaybackToken signal) is play in a releasing, it plays a lender of enabling signal and a borrower information according to this releasing of receiving, and upgrade this corresponding tables, this Online Music server also transmits one and plays the exclusive portable music player (PPAP) of permission to this borrower, and this borrower can be play from the music file that this lender receives.
Wherein, when this Online Music server is leased the music file sharing model of relation for this, to broadcast permission that should music file, the music file that this lender is sent share can't be play in this lender's exclusive portable player (PPAP) in a time limit of the lease in this lender's of its temporary transient forbidden energy (disable) the exclusive portable player (PPAP).
Wherein, this Online Music server provides the music file sharing model of a buyer-seller relationship, when this Online Music server receives that by this access interface enabling signal (releasePlaybackToken signal) is play in a releasing, it plays the person of selling with the person's of buying in of enabling signal information according to this releasing of receiving, upgrade corresponding tables, this Online Music server also transmits one and plays the exclusive portable music player (PPAP) of permission to this person of buying in, and this person of buying in can be played from the music file that this person of selling receives.
Wherein, during music file sharing model that this Online Music server is this buyer-seller relationship, to broadcast permission that should music file, the music file that this person of selling is sold can not be play in this exclusive portable player (PPAP) again in its permanent this person's of selling of forbidden energy the exclusive portable player (PPAP).
Wherein, this broadcast permission has a song identification field (song ID) and a device identification field (device ID).The identification code of this song recognition word segment record one song.The unique device identification code of hardware of this device identification field record one exclusive portable music player (Hardware UniqueDevice ID).
Wherein, the music file of this compressed format is exclusive Online Music form.
Wherein, the music file of this compressed format can be selected from MP3, WMA, ASF one of them.
Wherein, this first transmission medium is a wireless transmission medium.This wireless transmission medium can be bluetooth, Wi-Fi, WiMax one of them.
Wherein, this first transmission medium is a wire transmission media.This wire transmission media is an Ethernet.
Wherein, this second transmission medium is a wireless transmission medium.This wireless transmission medium can be bluetooth, Wireless USB, Wireless Ethernet one of them.
Wherein, this second transmission medium is a wire transmission media.This wire transmission media is an Ethernet.
Description of drawings
Fig. 1 is the synoptic diagram of the exclusive portable music player system of protection digital content literary property of the present invention.
Fig. 2 is exclusive portable music player access music file of the present invention and the corresponding synoptic diagram of playing permission.
Fig. 3 is exclusive portable music player access music file of the present invention and the corresponding process flow diagram of playing permission.
Fig. 4 is the synoptic diagram that exclusive portable music player of the present invention is shared music file.
Fig. 5 is the process flow diagram that exclusive portable music player of the present invention is shared music file.
Fig. 6 is the synoptic diagram of exclusive portable music player dealing music file of the present invention.
Fig. 7 is the process flow diagram of exclusive portable music player dealing music file of the present invention.
Fig. 8 is the synoptic diagram of exclusive portable music player playing music of the present invention.
Embodiment
Fig. 1 is the synoptic diagram of the exclusive portable music player system of protection digital content literary property of the present invention, and it comprises: an exclusive portable music player (PPAP; ProprietaryPortable Audios Player) 110, one access interface (WAI; , and an Online Music server (OMS Web AccessInterface) 120; Online Music Server) 130.
This exclusive portable music player (PPAP) 110 has the unique device identification code of a hardware (Hardware Unique Device ID), and can play the music file of a compressed format.This exclusive portable music player 110 provide a mark admissible keep in mind the music file sharing model of pattern, a music file sharing model and a buyer-seller relationship.When this exclusive portable music player 110 for mark admissible keep in mind during pattern, it can pass through one first transmission medium 140, link with an Online Music server (OMS) 130, play permission (PlaybackToken) to obtain one, thereby allow its corresponding music file to be played.
This plays permission (PlaybackToken) via 140 transmission of first transmission medium time, is just via 140 transmission of first transmission medium after process is encrypted earlier.This encryption method can be known PKI spoon and private key spoon method (public key and private key).This encryption method also can use the present invention that the exclusive compression method that music file compresses is compressed this this broadcast permission (PlaybackToken), to reach secret effect.
When a broadcast permission (PlaybackToken) of encrypting produces via known PKI spoon and private key spoon method (public key and private key), this exclusive portable music player 110 is obtained the broadcast permission (PlaybackToken) of this encryption and can be used known private key spoon (privatekey) that the broadcast permission of this encryption is decrypted, and obtains this broadcast permission.
When a broadcast permission (PlaybackToken) of encrypting produces via exclusive compression method of the present invention, this exclusive portable music player 110 is obtained the broadcast permission (PlaybackToken) of this encryption and can be used exclusive decompression method of the present invention that the broadcast permission of this encryption is decrypted, and obtains this broadcast permission.By this, this exclusive portable music player 110 only needs exclusive decompression hardware circuit of the present invention, can carry out decompression operation to the music file and the broadcast permission of compression.
This first transmission medium 140 is wireless transmission medium 141.This wireless transmission medium is preferably the LAN with a Wi-Fi or WiMAX access point (access point).This first transmission medium 140 is a wire transmission media 142, and this wire transmission media 142 is preferably Ethernet.
When this exclusive portable music player 111 was the music file sharing model, it can see through music file that one second transmission medium 150 and 120 transmission of this access interface desire to share to other exclusive portable music player 112.
This second transmission medium 150 is wireless transmission medium 151.This wireless transmission medium 151 be preferably bluetooth, Wireless USB and Wireless Ethernet one of them.This second transmission medium 150 is wire transmission media 152.This wire transmission media 152 is preferably Ethernet.
This exclusive portable music player 110 can be via this first transmission medium 140 and this access interface (WAI) 120 and these Online Music server (OMS) 130 downloading digital music files that arrive.This exclusive portable music player 110 can be online to a personal computer (figure does not show) via this second transmission medium 150 and this access interface (WAI) 120, and by this personal computer downloading digital music file.
The music file of this compressed format is preferably exclusive Online Music form.The music file of this compressed format also can be MP3, WMA or ASF File Format.
This broadcast permission (PlaybackToken) has a song identification field (song ID) and a device identification field (device ID).The identification code of this song identification field (song ID) record one song.The unique device identification code of hardware (Hardware Unique Device ID) of this device identification field (device ID) record one exclusive portable music player.
This access interface (WAI) 120 provides the interface between this Online Music server (OMS) 130 of this portable music player (PPAP) 110 accesses.This portable music player (PPAP) 110 is chosen broadcast permission (PlaybackToken) or the music file of appointment, notifies this Online Music server (OMS) 130 to carry out access via this first transmission medium via this access interface (WAI) 120.
This Online Music server (OMS) 130 prestore the music file of a plurality of compressed formats, the broadcast permission (PlaybackToken) corresponding with the music file of these a plurality of compressed formats, and a corresponding tables (mapping table) in a database 131.This Online Music server 130 provides a mark admissible to keep in mind to such an extent that pattern, is leased music file sharing model, and the music file sharing model of a buyer-seller relationship of relation.
When this Online Music server 130 receives that by this access interface 120 enabling signal is play in a requirement, this Online Music server 130 produces a broadcast permission (PlaybackToken) corresponding to particular music file, and upgrade this corresponding tables (mapping table), should play permission (PlaybackToken) again and deliver to an exclusive portable music player (PPAP) 110 via this first transmission medium biography 140.
Fig. 2 is music file and the corresponding synoptic diagram of playing permission in this Online Music server 130 of exclusive portable music player of the present invention (PPAP) 110 accesses.Fig. 3 is music file and the corresponding process flow diagram of playing permission in this Online Music server 130 of exclusive portable music player of the present invention (PPAP) 110 accesses.At first in step S310, this portable music player (PPAP) 110 is set up the communication link with this access interface 120.After setting up communication link, 110 pairs of these access interfaces 120 of this portable music player (PPAP) are sent a song requirement (step S320).As shown in Figure 2, exclusive portable music player 111 is sent song A requirement, and exclusive portable music player 112 is sent song A requirement, and exclusive portable music player 113 is sent song B requirement.
In step S330, access interface 120 notice Online Music servers 130 are from the song requirement of portable music player 111,112,113.
In step S340,130 pairs of song meterings of Online Music server are with the song requirement of identification from portable music player 111,112,113, and are recorded in the corresponding tables 132.
As shown in Figure 2, this corresponding tables 132 comprises a song field, digital section, is play permission field, owner's field.The title or the code of this song field record one song.The number of times of this this song of number of times field record.This broadcast permission field then writes down the broadcast permission relevant with an owner of this song.This owner's field then writes down the owner relevant with this song.
In step S340, the song requirement that Online Music server 130 is transmitted according to access interface 120 is to the song metering and be recorded in the corresponding tables 132.
In step S350, the song of 130 pairs of portable music players of this Online Music server requires to produce one and plays permission.As shown in Figure 2, this Online Music server 130 requires to produce corresponding broadcast permission (play permission A1, play permission A2, play permission B3) to the song of portable music player 111,112,113 respectively.
In step S360, the broadcast permission that this Online Music server 130 will produce requires generation corresponding with song, and this portable music player of record is the owner in corresponding tables.As shown in Figure 2, this owner's field of corresponding tables 132 then writes down portable music player 111,112,113 (PPAP1, PPAP2, PPAP3) respectively.This broadcast permission field of corresponding tables 132 then writes down the broadcast permission B3 that broadcast permission A1, the portable music player 112 of portable music player 111 and song A are permitted A2 with the broadcast of song A, reached portable music player 113 and song B respectively.
In step S370, this Online Music server 130 will be play permission and be sent to relevant portable music player 110 with song via this access interface 120.
In step S380, this portable music player 110 receives plays permission and song.In step S380, this portable music player 110 finishes the communication link with access interface 120.
When this Online Music server 130 is leased the music file sharing model of relation for this, when this Online Music server 130 receives that by this access interface 120 enabling signal (release PlaybackToken signal) is play in a releasing, this Online Music server 130 is play a lender of enabling signal (release PlaybackToken signal) and a borrower information according to this releasing of receiving, and upgrades this corresponding tables (mapping table).This Online Music server 130 also transmits one and plays the exclusive portable music player 110 (PPAP) of permission (PlaybackToken) to this borrower, and this borrower can be play from the music file that this lender receives.
Fig. 4 is the synoptic diagram that exclusive portable music player of the present invention (PPAP) 110 is shared music file.Fig. 5 is the process flow diagram that exclusive portable music player of the present invention (PPAP) 110 is shared music file.At first in step S505, set up the communication link of portable music player (PPAP1) 111 and portable music player (PPAP3) 113.When this exclusive portable music player (PPAP1) 111 was the music file sharing model, it can see through music file that one second transmission medium 150 and 120 transmission of this access interface desire to share to other exclusive portable music player (PPAP3) 113.This second transmission medium 150 is preferably bluetooth, Wireless USB, Wireless Ethernet or wired ethernet network.
In step S510, this portable music player (PPAP1) 111 is sent to portable music player 3 with a song A via this second transmission medium 150, and finishes the communication link of this second transmission medium 150.
In step S515, set up the communication link of this portable music player (PPAP1) 111, (PPAP3) 113 and this access interface 120.In step S520,111 pairs of these access interfaces 120 of this portable music player (PPAP1) are sent a notice and are lent song A to portable music player (PPAP3) 113 requirements.In step S525, this access interface 120 notifies these Online Music server 130 portable music players (PPAP1) 111 that a song A is lent to portable music player (PPAP3) 113.
In step S530,111 pairs of access interfaces 120 of portable music player (PPAP1) are sent a temporary transient broadcast permission A1 signal that discharges song A, this access interface 120 is sent relevant signal according to the broadcast permission A1 signal that should temporarily discharge song A to this Online Music server 130.
In step S535, Online Music server 130 is with the temporary transient forbidden energy of broadcast permission A1 of the song A of portable music player (PPAP1) 111.In step S540, the broadcast permission A1 forbidden energy of 130 couples of song A of portable music player (PPAP1) 111 approval Online Music servers.To broadcast permission that should music file A, the music file that this lender (PPAP1) is sent share can't be play in this lender's exclusive portable player (PPAP1) 111 in a time limit of the lease in this Online Music server 130 these lenders' of temporary transient forbidden energy (disable) the exclusive portable player (PPAP1) 111.
In step S545, this Online Music server 130 produces one to this portable music player (PPAP3) 113 and plays permission A1 ' according to a lender and a borrower's information.In step S550, this Online Music server 130 should be play permission A1 ' and be sent on this portable music player (PPAP3) 113 via this access interface 120.
In step S550, this portable music player (PPAP3) 113 receives this and plays permission A1 ', wherein, plays permission A1 ' and can allow this portable music player (PPAP3) 113 play this song A.In step S555, stop the communication link of this portable music player (PPAP1) 111, (PPAP3) 113 and this access interface 120.
This Online Music server 130 is the music file sharing model of buyer-seller relationship, when this Online Music server 130 receives that by this access interface 120 enabling signal (releasePlaybackToken signal) is play in a releasing, this Online Music server 130 is play the person of selling with the person's of buying in of enabling signal (release PlaybackToken signal) information according to this releasing of receiving, upgrades corresponding tables (mapping table).This Online Music server 130 also transmits one and plays the exclusive portable music player (PPAP3) 113 of permission (PlaybackToken) to this person of buying in, and this person of buying in can be played from the music file that this person of selling receives.When this Online Music server 130 is the music file sharing model of this buyer-seller relationship, to broadcast permission (PlaybackToken) that should music file, the music file that this person of selling is sold can not be play in this exclusive portable player (PPAP1) 111 again in this person's of selling of its permanent forbidden energy (disable) the exclusive portable player (PPAP1) 111.
Fig. 6 is the synoptic diagram of exclusive portable music player of the present invention (PPAP) 110 dealing music files.Fig. 7 is the process flow diagram of the exclusive portable music player of the present invention (PPAP) 110 dealing music files.At first in step S705, set up the communication link of portable music player (PPAP1) 111 and portable music player (PPAP3) 113.When this exclusive portable music player (PPAP1) 111 bought and sold pattern for music file, it can transmit music file of desires dealing to other exclusive portable music player (PPAP3) 113 by one second transmission medium 150 and this access interface 120.This second transmission medium 150 is preferably bluetooth, Wireless USB, Wireless Ethernet or wired ethernet network.
In step S710, this portable music player (PPAP1) 111 is sent to portable music player 3 with a song A via this second transmission medium 150, and finishes the communication link of this second transmission medium 150.
In step S715, set up the communication link of this portable music player (PPAP1) 111, (PPAP3) 113 and this access interface 120.In step S720,111 pairs of these access interfaces 120 of this portable music player (PPAP1) are sent a notice and are sold song A to portable music player (PPAP3) 113 requirements.In step S725, this access interface 120 notifies these Online Music server 130 portable music players (PPAP1) 111 that a song A is sold to portable music player (PPAP3) 113.
In step S730,111 pairs of access interfaces 120 of portable music player (PPAP1) are sent a permanent broadcast permission A1 signal that discharges song A, this access interface 120 is sent relevant signal according to the broadcast permission A1 signal that should forever discharge song A to this Online Music server 130.
In step S735, Online Music server 130 is with the permanent forbidden energy of broadcast permission A1 of the song A of portable music player (PPAP1) 111.In step S740, the permanent forbidden energy of broadcast permission A1 of 130 couples of song A of portable music player (PPAP1) 111 approval Online Music servers.To broadcast permission that should music file A, making this person of selling (PPAP1) send music file can't play in this person's of selling exclusive portable player (PPAP1) 111 in this Online Music server 130 these persons' of selling of permanent forbidden energy (disable) the exclusive portable player (PPAP1) 111.
In step S745, this Online Music server 130 produces one to this portable music player (PPAP3) 113 and plays permission A1 ' according to the information of the person of selling with the person of buying in.In step S750, this Online Music server 130 should be play permission A1 ' and be sent on this portable music player (PPAP3) 113 via this access interface 120.
In step S755, this portable music player (PPAP3) 113 receives this and plays permission A1 ', wherein, plays permission A1 ' and can allow this portable music player (PPAP3) 113 play this song A.In step S760, stop the communication link of this portable music player (PPAP1) 111, (PPAP3) 113 and this access interface 120.
Fig. 8 is the synoptic diagram of exclusive portable music player of the present invention (PPAP) 110 playing musics.As shown in Figure 8, it stores song A, B, C, and D this exclusive portable music player (PPAP) 110, and wherein song C has two song recognition sign indicating numbers (C98, C123).When this exclusive portable music player (PPAP) 110 obtains to play permission A, because it is inequality with the device identification code (A12345) of this exclusive portable music player (PPAP) 110 to play device identification code (HUDID) device identification code (B12231) that field write down of permission A, 110 of this exclusive portable music players (PPAP) can't be play the permission song C that A write down.
When this exclusive portable music player (PPAP) 110 obtains to play permission C, because the song recognition sign indicating number (C5) that the song recognition code field of broadcast permission C is write down is inequality with the song recognition sign indicating number (C123, C98) of this exclusive portable music player (PPAP) 110,110 of this exclusive portable music players (PPAP) can't be play the permission song C that C write down.
Have only when this exclusive portable music player (PPAP) 110 obtains to play permission B, because the song recognition sign indicating number (C123) that the song recognition code field of broadcast permission B is write down and the song recognition sign indicating number (C123 of this exclusive portable music player (PPAP) 110, C98) identical, and device identification code (HUDID) device identification code (A12345) that field write down of playing permission B is identical with the device identification code (A12345) of this exclusive portable music player (PPAP) 110, and this exclusive portable music player (PPAP) 110 could be play the permission song C that B write down.
In the present embodiment, this access interface (WAI) 120 is arranged in this exclusive portable music player (PPAP) 110.In other embodiments, this access interface (WAI) 120 can be arranged on the personal computer, this exclusive portable music player (PPAP) 110 is connected via on a USB interface, an Ethernet interface and this personal computer, thus via this access interface (WAI) 120 data of this Online Music server 130 of access.
Technology of the present invention can be virtual with known CD (compact disk, CD), and give the function of leasing digital music file, improves the disappearance of known digital copyright administration (DRM) each side.Compared to known digital copyright management (DRM), it is that known digital copyright management (DRM) is beyond one's reach at present that technology of the present invention has following points:
1. song almost can be play in any machine of the present invention.
2. song can obtain by the relation of leasing outside the dealing.
3. song can be resell by the second-hand market.
The mode that stores music and sell with CD (compact disk, CD) form, except Costco Wholesale than the costliness, still be subjected to deeply undoubtedly popularly to accept and welcome, also meet the literary property standard fully, and dark unique property of tool and preservation value.In view of this, technology of the present invention proposes more to press close to than known digital copyright administration (DRM) the digital music notion of CD (CD) original idea by CD is virtual and give the mechanism of leasing.
In the technology of the present invention, use a cover exclusive non-damage type music compression method (proprietarylossless compression algorithm), the music file of the compressed format that is produced is exclusive Online Music form.This exclusive non-damage type music compression method is the exclusive compress mode based on type variable ratio of compression (variable compression ratio), broadcast permission (PlaybackToken) mechanism that cooperates the technology of the present invention, provide than MP3 format more near the tonequality of CD, and than the more efficient and safe function mode of known digital copyright administration (DRM).Again, technology of the present invention also can be used the music file of known compressed format, for example: MP3, WMA, ASF.
As shown in the above description, known digital copyright administration (DRM) software engineering is to use the protected mode of PKI spoon and private key spoon with protection content key (content key).In case after this content key was used the decoding of private key spoon, the content key of this decoding can be blazed about, security and efficient are all not enough to some extent.Whether and broadcast permission of the present invention (PlaybackToken) has a song identification field and a device identification field, can allow this exclusive this broadcast permission (PlaybackToken) of portable music player 110 checks can use on this exclusive portable music player 110.More known digital copyright management (DRM) has more security.So technology of the present invention can solve the problem of security of known digital copyright administration and efficient deficiency.Technology of the present invention can solve the mechanism of leasing that the digital content archives can be provided, and the dealing mechanism of digital content archives also can be provided, and solves the problem that digital content file is shared in the restriction of known digital copyright administration.
The foregoing description only is to give an example for convenience of description, and the interest field that the present invention advocated should be as the criterion so that claims are described certainly, but not only limits to the foregoing description.
Claims (7)
1. exclusive portable music player system of protecting the digital content literary property, it comprises:
One exclusive portable music player, it has the unique device identification code of a hardware, and can play the music file of a compressed format, this exclusive portable music player provide a mark admissible keep in mind pattern, when this exclusive portable music player be mark admissible keep in mind during pattern, it can pass through one first transmission medium, links with an Online Music server, play permission to obtain, thereby allow its corresponding music file to be played;
One access interface, provide this portable music player access this Online Music server, this portable music player is chosen the broadcast permission or the music file of appointment, notify this Online Music server to carry out access via this access interface via this first transmission medium, wherein, this exclusive portable music player also provides a music file sharing model, and it can transmit the music file of desiring to share with this access interface by one second transmission medium; And
One Online Music server, the music file of its a plurality of compressed formats that prestore, broadcast permission and a corresponding tables corresponding with the music file of these a plurality of compressed formats, this broadcast permission has a song identification field and a device identification field, this Online Music server provide a mark admissible keep in mind pattern, when this Online Music server receives that by this access interface enabling signal is play in a requirement, this Online Music server produces a broadcast permission corresponding to particular music file, and upgrade this corresponding tables, should play permission again and be sent to this exclusive portable music player via this first transmission medium, this Online Music server also provides one to lease the music file sharing model of relation, when this Online Music server receives that by this access interface enabling signal is play in a releasing, it is according to a lender's of this releasing broadcast enabling signal of receiving information and a borrower information, and upgrade this corresponding tables, this Online Music server also transmits one and plays the exclusive portable music player of permission to this borrower, this borrower can be play from the music file that this lender receives, when this Online Music server is leased the music file sharing model of relation for this, in its temporary transient this lender's of forbidden energy the exclusive portable player to broadcast permission that should music file, the music file that this lender is sent share can't be play in this lender's exclusive portable player in a time limit of the lease, wherein, the identification code of this song recognition word segment record one song, the unique device identification code of hardware of this device identification field record one exclusive portable music player.
2. exclusive portable music player system as claimed in claim 1, wherein, this Online Music server provides the music file sharing model of a buyer-seller relationship, when this Online Music server receives that by this access interface enabling signal is play in a releasing, it is according to the person's of selling of this releasing broadcast enabling signal of receiving information and the person of buying in information, upgrade corresponding tables, this Online Music server also transmits one and plays the exclusive portable music player of permission to this person of buying in, and this person of buying in can be played from the music file that this person of selling receives.
3. exclusive portable music player system as claimed in claim 2, wherein, during music file sharing model that this Online Music server is this buyer-seller relationship, to broadcast permission that should music file, the music file that this person of selling is sold can not be play at this exclusive portable player again in its permanent this person's of selling of forbidden energy the exclusive portable player.
4. exclusive portable music player system as claimed in claim 3, wherein, the music file of this compressed format is exclusive Online Music form.
5. exclusive portable music player system as claimed in claim 4, wherein, when transmitting this broadcast permission via this first transmission medium, this broadcast permission is earlier through cryptographic calculation.
6. exclusive portable music player system as claimed in claim 5, wherein, this cryptographic calculation is PKI spoon and private key spoon method.
7. exclusive portable music player system as claimed in claim 6, wherein, this cryptographic calculation is an exclusive compression method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100825936A CN100476842C (en) | 2006-05-18 | 2006-05-18 | Portable music player system for protecting digital content copyright |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100825936A CN100476842C (en) | 2006-05-18 | 2006-05-18 | Portable music player system for protecting digital content copyright |
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| Publication Number | Publication Date |
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| CN101075279A CN101075279A (en) | 2007-11-21 |
| CN100476842C true CN100476842C (en) | 2009-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100825936A Expired - Fee Related CN100476842C (en) | 2006-05-18 | 2006-05-18 | Portable music player system for protecting digital content copyright |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110270762A1 (en) * | 2010-04-30 | 2011-11-03 | Gsimedia Corporation | Secure Data Transfer From a Vending Device to Portable Data Storage Devices |
| CN103716339A (en) * | 2012-09-28 | 2014-04-09 | 腾讯科技（深圳）有限公司 | Multimedia sharing method, system and device |
| CN104346189A (en) * | 2013-08-08 | 2015-02-11 | 腾讯科技（深圳）有限公司 | Voice playing method and equipment |
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- 2006-05-18 CN CNB2006100825936A patent/CN100476842C/en not_active Expired - Fee Related
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| CN101075279A (en) | 2007-11-21 |
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