Duplicating protective system and method for digital signal

Duplication is a digital signal

Protection Fangfaben wire is a flat of application is on January 8, 1999 and application of 99802622.0, topics is an copy the protection system and method for digital signal of division application of claim patented.

technical field

The copy protection of the invention relates to the user media, the hole is audio the user with a video signal providing copy protection method and device.

background technology

The user with the phase-discrimination digital process provided with multiple digital user technology product, the product for providing to compare producing simulation sinking of the upper performance. The, and can digital recorder system with digital system audio a release for video information with a a people to digital audio of visual device for warning fusing of piracy problem, especially a entertainment industry is set. The response the warning of a problem, MPAA (Image Motion Associated of America, The Mobile Image) Associated claims 1-7 (release) in digital video disk (Digital Video Disk, DVD) is copy protection mobile image, for preventing buyer to purchase a single replica, and line and distribution of replica.

The, a warning of the questions is interposed between adjacent audio on a DVD distribution of video information. Similar problem warning further exists in the media, a of the cable television broadcast and televisions and media.

The cable television publisher cares protection very clamped to producing message routing. The method according for controlling for producing information by state access. The direct-current access is user release for of control information. For accessing state and copy protection control supply is the gate difference between is inserted, the direct-current access applied to a specific release seat or a node, and copy protection of continuous is made of the releasing seat or a node.

Protection audio existingly one another method for video information to audio and video signal encrypts and entrusts with a receiving end is audio and capability of video signal a. The problem realizing is; the receiving end usually lower complexity function body end of, for of the common/personal key encryption/the condition of a.

The other end of proposition of copy protection media and is provided with a connecting Section (1394) technology's copy protection copy protection according team (Copy Protection Wording Group; CPTWG) data transmission by the research is eight for group (data transmission discussion group; DTDG) subcommittee to provide. Partitions 1394 technologies is edges of by a common the user electric 100M Bit/second or 400M Bit/second protocol.

The other end of proposition of updating the safety terminal standard of international (RenewableSecurity National Standard Hole, NRSSC) #, and is EIA (electric IndustryAssociates, electronic industry) with safety (IS679) is temporarily Biao Standard, comprising a defined mobile state secure access two pair of interface. And a-called of intelligent card and a PCMCIA card.

Digital 1 of with the IS679 interface and receiver connected can substitute the safety module are connected audio and video signal traditional 100 device. The mark is AVS1 to the AVSN one or more frequencies audio and video signal usually//a second speed a second to 100M Piece of 6M Bit to the sending 102. Audio and EN made of the MPEG coding method end of the code encoder and E1 and E2 video signal AVS1 and AVS2 to AVSN respectively, and which is audio signal AS1 and AS2 to ASN and video signal VS1 and VS2 to VSN.

, Which is VSN are harassed is made of any of the key encryption technique of widespread is filled with is added S1 and S2 to SN audio signal AS1 and AS2 to ASN and video signal VS1 and VS2 of the encryption. Adhesive, encryption to 104 VSN are combined single audio of the synthesizer audio signal AS1 and AS2 to ASN and video signal VS1 and VS2 of video signal. The synthesizer 104 may include a processor, a invention and flowing a single audio for port of video signal processor.

Adhesive, wherein audio and video signal 108 providing of the link to a receiver 106. The link 108 may include one or multiple probable of communication medias and/or the system, and supporting 102 transmitter and receiver is 106 to midspan a single audio and video signal device. Link 108 examples comprising (, which is interposed between adjacent) for transmitting the data coded between two comprises a telephone system, the wired television system and television system (broadcasting or non-direct broadcasting), a satellite broadcasting system (broadcasting or non-direct broadcasting); one or more computer network and/or the bus, network and intranet, and one software-hardware, and communication systems and methods and related equipment.

The receiving single audio and video signal receiver, the 106 audio and video signal transmitting 112 of the interface can substitute the safety module 110. The IS679 application, can substitute the safety module 110 to 112 and a receiver 106 intelligent card or a PCMCIA card via the IS679 compatible interface. , The other types' interface further can be used relate to substitute the safety module (110) is connected to a receiver 106. Can substitute the safety module (110) comprises descrambler 114, wherein descrambler 114 is within harass overlapped is coded signal AS1 and AS2 S1 and S2 to SN is added to ASN and video signal VS1 and VS2 the password to VSN. , And Xie Rao single audio and video signal receiving circuit 106, and is in receiver 106 decoder 116 decodings. , And audio according Xie Raobing decodes of video signal providing a screen 118) or watching a display.

Using the method a power is four, Xie Rao is in can substitute the safety module 10. The containing the oxide to provide standard receiver, it has no need the special clamp to harass apparatus. The IS679 application, can substitute the safety module be in the form of intelligent card or PCMCIA, providing a personalization the section.

Although the method comprises merits part, and with shortcoming and limiting. The same method of A disadvantage of the is; the interface 112 of the access condition, Xie Rao the audio and video signals of reissue the base, the decoded and display, a avoiding the protection copy. For example, and use and shown the digital 1 can substitute the safety module DVD player condition; each interface accesses 112, which Xie (Rao is not) on audio and video signals of distribution of receivers and display device, and is on and reissued.

Wherein the lower providing a copy protection the IS679 application, and considering are sorts of with prior method, needs a to prevent urgently with a method and question and a to audio and video signal IS679 application method of copy protection.

invention content

Generally talk-back, embodiment of this invention can the exerting the condition for providing power to the protection copy of body material, and where no matter the element is distributed. The power capacitor according here is described enough same is competent (of qualify) the field simply so-called of A Yueshu (curb high) is a. A high suppressor a cross providing multiple is a safety module, which the minimum safety to the high rank layer (secure), at needed to implement than a an existing method at system resource relatively.

Unit audio for copy protection and video information digital signal the invention The preferred embodiment method, comprising the following steps: (a) is a digital signal code to obtain a coded; signal(b) for converting the coded signal by copy protection function (function) and a signal of copy protection, wherein the function by unit the protection copy data signal; To the harass the copy protection signal added with (c), to obtain a added to harass the signal.

The invention preferred The embodiment of recovery audio from the digital signal of video signal system, wherein the digital signal includes harass the signal and unit of copy protection data copy protection data signal, wherein a system via a receiver and a descrambler module with connecting ring: The descrambler module comprises: (1) First communication interface, with the link with the receiver, communication with (2), descrambler to the back ring from the receiver is added to harass the signal end is Xie; RaoA receiver comprises: (1) And the second communication interface, with the link with the descrambler communication module, (2) processor, a: (i) is arranged in the digital signal within to the data signal, and is the copy protection data to the data signal unit to save in a memory device, (II) is arranged in the digital signal to withdraw which is added to harass the signal, and is added to harass the signal after to the ring for providing the descrambler; With (3), converter using a protection functions of the descrambler input by the signal of copy protection to contact with the audio and repeatedly and video signal, the inverse function by the memory the copy protection data.

The preferred embodiment of this invention, wherein the descrambler module connected to the ring end of the signal receiver is screwed the copy protection.

Brief description for drawings

The invention claims above and characteristic, structure, power and volume manifest of claim 1-3 of said that comprising a. By the following detailed description and attached shape, and fully understand the invention structure and operation mode, and further in volume and power. Each auxiliary shape of a here is not considered of the precise manifestation of invention embodiment, and methods for displaying target, and claim explain the light of the instruction of.

Digital 1 of with the IS679 interface connected with the receiver can substitute the safety module copy protection audio of the traditional configuration of video signal.

Digital 2 of relate to substitute the safety module according to use of the invention The preferred embodiment copy protection audio of the configuration of video signal.

Digital 3) is configuration the invention for configuring diagram of The second preferred embodiment.

Digital is 4 to indicate relate to implement the invention The preferred embodiment computer system diagram.

detailed description of illustrated embodiments

The description for providing lower cover for the field to a to provide manufacturing and uses the invention, and elaborated the inventor realizing current best and invention. The, wherein a defined the universal circuit of this invention, wherein the technical field of provide the revisions to the invention easily.

Digital 2 of relate to substitute the safety module according to use of the invention The preferred embodiment copy protection audio of the configuration of video signal 200. 202 Provided with one or more voice frequencies to the sending of video signal, a mark is AVS1 and AVS2 is at AVSN; the signal speeds in usually 6M Bit/second to 100M Piece is in a range. Audio is connected by a made of the MPEG coding method to the code transmitting 202 encoder E1, E2 and EN video signal AVS1 and AVS2 to AVSN, and which is audio signal AS1 and AS2 to ASN and video signal VS1 and VS2 to VSN.

Connected to ASN and apply a function of audio signal AS1 and AS2 video signal VS1 and VS2 to VSN a function (function module); F1 F2 and FN, increase copy protection. Copy protection data CP DATA providing a transmitter 202 and a function module F1, F2 and FN, a to apply the function of audio signal AS1 and AS2 to ASN and video signal VS1 and VS2 to VSN.

Is processed by function module F1, F2 and FN, a VSN are harassed is made of any of the key of widespread is overlapped the gasket and a protection copy data CP DATA is added S1 and S2 to SN audio signal AS1 and AS2 to ASN and video signal VS1 and VS2 are add densely. Be added S1 and S2 to the cross density information according SN need, for example with density key information, a (is not shown) and a state access management system, the system typically comprises a transmitter 202, further -) is elsewhere.

A heater, density audio signal AS1 and AS2 to ASN and video signal VS1 and VS2 to VSN and copy protection data CP DATA of synthesizer 204, housings to provide single audio and video signals. , Wherein the copy data CP DATA, comprising the single audio of the video signal. The synthesizer 204 capable of providing a single audio and video signal and a key processor, a of the port or processor.

, A single audio and video signal 208 providing of the link to a receiver 206. The digital 1 to 108, wherein the link 208 may include one or more communication medias or the system, or both are provided with, and supporting 202 transmitter and receiver is 206 to midspan a single audio and video signal device. Link 208 examples comprising (, which is interposed between adjacent) for transmitting the data coded between two comprises a telephone system, the wired television system and television system (broadcasting or non-direct broadcasting), a satellite broadcasting system (broadcasting or non-direct broadcasting); one or more computer network and/or the bus, network and intranet, and one software-hardware, and communication systems and methods and related equipment.

When the receiver 206) pass through the link 208 to receiving the audio frequency of the video signal, a processor 210 from the audio of the video signal within copy protection data CP DATA. The link (208) frequencies audio and video signals of pack format application processor, 210) from the audio of the video signal extracting comprising a copy protection data CP DATA one or more data packet, and them by a data packet polymeric of tentation data, is composed of NULL value polymeric. For example, comprising a copy protection data CP DATA data packet is connected to a predetermined data packet Biao Quantum, is easy them 210) is externally a processor.

, A single audio and video signal providing 214 of the interface is can substitute the safety module 212. The IS679 application, can substitute the safety module (212) is an intelligent card or a PCMCIA, the four of 214 corresponding to the receiver with the IS679 compatible 206 interface. Can substitute the safety module (212) comprises descrambler 216, wherein descrambler 216 is relieved is added to be terminal for encrypting S1 and S2 to SN audio signal AS1 and AS2 to ASN and video signal VS1 and VS2 the encryption to VSN.

, And Xie Rao single audio and video signal is 214 of the interface to a receiver 206. , Wherein a receiver from 206 Xie Rao the audio and can substitute the safety module 212 )comprises a video signal is not) is added be S1 and S2 to the encryption device SN providing, it is further comprises a function module F1 and F2 to the copy protection according to FN.

, And Xie audio Rao audio and video signal to a function F-1 block; the functional block F-1 to the inverse F function, comprising a solution from function module F1 and F2 to FN by copy protection according copy protection data CP DATA to; the copy protection data CP DATA processor is 210 from audio of the video signal elements. The invention claims a preferred embodiment, function F-1 block; an external comprises a preset value data packet base, greater Than Jierao the audio inverse function F-1 of video signal. For example, wherein the function F-1 portion comprises a preset value data packet, a receiver 206 retentions' novel copy protection data CP DATA function of block for F-1, a holding inverse function F-1 to the following data packet, distinguishing is arranged in the preset value data packet.

, And Xie audio Rao audio and video signals of in receiver 106 decoder 218 decodings. , And audio according Xie Raobing decodes of video signal providing a screen 220, in order to or watching a display.

The method of this invention preferred The embodiment of providing audio and video signal copy protection provided with does the existing computing method and merits gate. First, wherein the method comprises a current than a reference image 1 description the safety of prior computing technology higher rank, wherein of which can substitute the solution for safety module for providing 212 to harass the signal comprises a function module F1 and F2 to the copy protection according FN providing, it does not comprises copy protection data CP DATA, the data CP DATA associated of processor 210, except for. Once from audio of the video signal within copy protection data CP DATA, the data retains in receiver 206. Thus, and can substitute the solution for safety module for providing 212 to harass the signal of the receiver and/or the recording device using, and it comprises of with the made of function block function block F-1 part, wherein of them it access copy protection data CP DATA, the data CP DATA is connected with periodically changing the.

In addition, the copy protection method of flexible, containing the receiver manufacturing method of casing to casing for Biao Standard arranged, and without using the special part or the algorithm, wherein to 210 and a function F-1 can be used as a standard part is realized is a processor. A copy protection rank copy protection filler of providing a transmitter 202 copy protection data CP DATA definitions.

Wherein of, and a pluggable relatively simple function function module F1 and F2 to FN, a of different or logic operation (XOR). To through the series uses complex added density algorithm's compares method, and function of the power divider is set at resource realizing SECTION and F-1 relatively. The, a copy protection rank capable of the lower according to the specific application condition for a wall special function. The MPEG decoding embodiments condition, 184 data' bytes single data packets can be used end is 64 to 1000 bits XOR function. In addition, copy protection data CP DATA of the root exchange according to the specific application condition need unusually.

The invention claims a second preferred embodiment, copy protection data except the audio of the video signal, and generating a receiver and a to can substitute the safety module. Digital 3) is in a method for configuration 300 image. The receiver 302) is connected IS679 interface for 306 to provide to can substitute safety module 304 frequencies audio and video signal (AVS).

Can substitute the safety module comprises a network with Xie Rao the descrambler to the AVS 308 signal. Adhesive, wherein AVS to provide the functional module SECTION; the functional module through SECTION of the protection copy data to a function to AVS, and the copy protection to the AVS, to generate AVS used for processing. CP DATA 302 periodically is produced by the receiver and is provided can substitute the safety module 304.

AVS used for processing 306 of the interface providing receiver 302, function module F-1 to a function of copy protection data CP DATA, is within formerly a copy protection function according module SECTION is 100mhz or 120mhz. , And the AVS data of decoded and decoding and D claims a screen, 310) or watching a display. The avoiding method of probable the AVS a copy protection data CP DATA. Wherein copy protection data CP DATA capable of randomly, wherein can avoid 302 of the special part or the algorithm in receiver.

Although in aggregate is a IS679 application interface providing copy protection the content to the invention preferred The embodiment of, a method for fabricating and is suitable for the voice frequencies of video configuration. In addition, the is suitable and method for fabricating the is an audio and video signal the length signals and information.

The part of the description, or the combination of hardware device and one or more software processing component separation of a hardware device and one or more software processing component separation. On the digital, 4 is furnace capable of the invention embodiment computer system 400 image.

The computer system 400) for driving the information communication the bus 402 or other communication mechanism, and a bus 402) process information processor 404. Computer system 400 - comprising a main storages of bus 402), 406) of the random access memory or dynamic storage device, for storing flowing of the information and instruction of the processor 404 and a. The host device 406 and is further used to save the other temporary variables or middle information of the embodiment, and 404 executing a processor.

Computer system 400 - comprising non-erasable storage ROM (408) or other bus 402 static storage device, for storing processor 404 static information and instructions. The invention floppy disk or the working disc's the storage device 410 and with the bus 402, a filling data and.

The computer system 400 and 402 are connected with the displayer through a bus 412, a invention is cathoderay tube (CRT), a to a user displaying information. 414 The bus comprising an letters and keys' input device, 402) is a processor for information and commands selecting communication 404. The types' user input device for cursor controller 416, a invention is a mouse, trackball or a cursor direction key, a electrically connected with the direct information and commands selecting to the processor 404, wherein the cursor the screen (412) mobiles. The input device usually with the two-degrees-of-freedom and two shaft direction; two shaft of the first shaft (e.g., x) and second shaft (. e.g, y); the decoration device and methods of the plane of the.

The embodiment of this invention claims a computer system 400), for providing the audio the IS679 application of the copy protection of video signal. The invention claims a preferred embodiment, IS679 by sound intermediate frequency of the copy protection of video signals including the processor 404 executions a computer system 400 responses the memory 406 one or more indicating one or more sequences for providing. The device for indicating can be connected to the computer-readable medium is of 410 to reading the main device for storage device from the computer 406. A can make the processor 404 executions the main storage 406 the operating order of sequences for processing order of the lower. The one or more processor is multiprocessing configuration can be used end part comprises a main storage 406 command sequences. The can substitute the embodiment, hardware circuit can be used to substitute the soft or the same invention claims a software instruction of the embodiment. , Wherein embodiment of this invention is interposed between adjacent the combination of any special hardware circuit and software.

A function adding medium of the terminology of the door is participating to provide the instruction is electrically connected with the processor 404 executions any medium. The medium can is in form, comprising, which is not restricted, non-volatile medium, volatilizing medium and transmitting medium. Non-volatile medium is of a CD or floppy disk, is of a storage device 410. Volatilizing medium includes dynamically memory, a primarily of memory 406. Transmitting medium a coaxial cable, copper wire and fibre, comprising a bus 402 wire. The transmitting medium can is the acoustic wave or the optical wave form, a of the infrared data communication generated in radio wave and a.

The function adding the medium common is formed of a flexible disk), hard plate, a magnetic tape or any other magnetic layer, CD-ROM, any other lamp, media data card and paper band; one another with the pallet comprises a floppy disk and floppy disk the pattern hole physical media, RAM, PROM and EPROM, FLASH-EPROM, any other memory chip or head (of), and follows of the medium or any other a reading.

Multiform function adding the medium be used to provide one or more indicating one or more sequences to the processor 404 executions. For example, wherein the instruction is connected to a telecomputer's of floppy disk first. The telecomputer of the indication wherein the memory, and sending the order to the telephone line of the modem. Computer system the 400 audio capable of receiving a telephone line the data, and is an infrared emitting device is a data the into the infrared signal. The bus 402 infrared is closed is fixed to the receiving data by the infrared signal and is put in the data the bus 402). The bus 402 with a data memory (406, 404 processor and performing turn from the main storage 406 extractions. A or the selecting to save end of the processor 404 executions of instructions of the storage 406 receiving and then the storage device 410.

Computer system 400 - comprising the bus 402 communication interface 418. The communication interface 418 provided with a two-way data housing of network (420), a network (420 is the local 422 network. For example, a communication interface 418 can be Integrated service Digital Network (integrated service digital network, ISDN) card or modem, to provide with corresponding to the data communication connection of telephone line. And the invention, communication interface 418 capable of the local area network (local area network, LAN), to provide with a data communication connection of compatible AND/OR. Is capable of realizing wireless link. The realizing method to form, a communication interface 418 transmitting and receiving a configuration the length information digital data stream, an electromagnetic or a light signal.

The network ring 420 usually provided with one or more networks with the data communication of the data device. For example, network (420 and 422 provided with the local network with the main 424 computer or a wherein a private network service provider (Network Service Provider, ISP 426) operations the connection of data device. ISP by current is generally called is 428 global pack data communication networks providing data communication service wherein the shape of private network of a conductor. The local network 422 and 428 is filled the digital data stream, an electromagnetic or a light signal wherein a private network. Through the network signal and network (420), and with the communication interface 418 signals and downward from the computer system 400 digital data; the signal and output comprises a information the carrier demonstrative form.

The computer system capable 400 through the network and network (420 and communication interface 418 sends a message and receiving data, comprising a program code. The network situation, the server 430 of Internet through 428, ISP426 and grid 422 and communication interface transmission 418 applications request codes. To the invention, such a method for providing audio according to IS679 application is as follows of the copy protection of video signal.

The code for receiving which is received in a processor 404 executions, and/or a memory the storage device 410, or the other nonvolatile storages, a prepare with a out of the future. The groove; the computer system 400 of the pallet is straight using the code.

The above-mentioned the double, comprising referred to the invention claims a specific embodiment to the invention. The, a very status, capable of the revisions and changes to the invention, which is not separated from the invention claims a objective wider and range. Therefore, here of the gasket and a digital considered merely of the displaying the invention, which are not explain from the limit significance.

The industrial utility is applied to the invention the copy protection digital signal in distribution the DVD and media to audio on the cable television, and television and Internet of video information and audio and video recording information field, to effectively preventing buyer purchase single replica and line and distribution of replica.