CN101437143B - Audio and video transmission encryption device - Google Patents
Audio and video transmission encryption device Download PDFInfo
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- CN101437143B CN101437143B CN2007102025709A CN200710202570A CN101437143B CN 101437143 B CN101437143 B CN 101437143B CN 2007102025709 A CN2007102025709 A CN 2007102025709A CN 200710202570 A CN200710202570 A CN 200710202570A CN 101437143 B CN101437143 B CN 101437143B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 58
- 230000005236 sound signal Effects 0.000 claims abstract 3
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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Abstract
A video and audio transmission encryption device comprises a playing mechanism capable of processing video and audio signals, and at least comprises a driving unit, a dynamic decryption unit and an application program unit which are connected with each other; and the video receiving mechanism is connected with the playing mechanism through the connecting interface and at least comprises a receiving and demodulating unit capable of receiving external audio-video signals and a dynamic encryption unit connected with the receiving and demodulating unit, wherein the dynamic encryption unit can receive the dynamic encryption string of the driving unit, and encrypts the dynamic encryption string with the audio-video signals after operation and then transmits the dynamic encryption string and the audio-video signals to the driving unit. Therefore, the encrypted data when the video receiving mechanism communicates with the playing mechanism is not easy to be cracked, and the video data during transmission is effectively protected.
Description
Technical field
The present invention relates to a kind of encipher apparatus for image and sound transmission, refer to especially a kind ofly make video reception mechanism and play the enciphered data of mechanism when linking up and be difficult for being cracked, and the encipher apparatus for image and sound transmission of the video data when reaching effective protection transmission.
Background technology
Because digital copyright management (DigitalRight Management, DRM) become more and more important, many data all can add secret mechanism in the process of transmission, and at present digital television system is required also that the circumscribed TV card is transferred to and will adds privacy mechanism in the process of computer terminal, is logged in transmission course to prevent video-audio data; General existing encryption device, as shown in Figure 4, include and one play mechanism 5, and be connected a TV card 6 by coffret 7 with broadcast mechanism 5, wherein this broadcast mechanism 5 is made of a driver element 51, the decrypting device 52 that is connected with driver element 51 respectively and an application program unit 53; This TV card 6 by a receiving element 61, and a ciphering unit 62 that is connected with receiving element 61 constituted.
It when using the video-audio signal that receives the outside with the receiving element 61 of TV card 6, after ciphering unit 62 encryptions, utilize the video-audio data after coffret 7 will be encrypted directly to transfer to broadcast mechanism 5, allow decrypting device 52 will decipher video-audio data afterwards and transfer to driver element 51, allow the user select to store or play this video data by application program unit 53 again, when selecting to store, the user is stored in the storage facilities 8 after setting up the shelves name on their own; If when the user selected to play, then transmission display equipment 9 was play.
Though above-mentioned encryption device can be in TV card 6 transmitting video datas when playing mechanism 5; by ciphering unit 62 video-audio data is encrypted; but because in order to improve the difficulty that is cracked; the AES of ciphering unit 62 necessary use hardware or DES etc. encrypt IC; or use expensive high-speed CPU to do AES or des encryption; if in this process, there is the people to remove to crack the KEY of AES or DES; or AES; the KEY of DES is known; data just can be logged so; and this encryption device is after once encrypting; promptly directly be transferred to the driver element 51 of playing mechanism 5; the selection that allows the user store or play; there is no the action of encrypting once more; and the video-audio data easy crack side after the encryption is recorded; video data when making this ciphering unit 62 can't effectively protect transmission; cause this ciphering unit 62 to perform practically no function, and can't be realistic required during use.
Summary of the invention
Technical problem to be solved by this invention: at above-mentioned the deficiencies in the prior art, provide a kind of encipher apparatus for image and sound transmission, the enciphered data in the time of can making video reception mechanism and play mechanism's communication is difficult for being cracked, and can effectively protect the video data when transmitting.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of encipher apparatus for image and sound transmission, it comprises that one can handle broadcast mechanism, a video reception mechanism of relevant video-audio signal, this broadcast mechanism comprises a driver element, reaches an application program unit that is connected with driver element, this video reception mechanism plays mechanism with a connecting interface and this and links, and it is characterized in that: described broadcast mechanism also includes a dynamic decrypting device that is connected with driver element; Described video reception mechanism includes one and can receive outside video-audio signal and it is compressed the reception and the demodulating unit of modulation, an and dynamic encryption unit that is connected with reception and demodulating unit, and this dynamic encryption unit receives the dynamic encryption string that driver element transmits, and with mutual exclusion displacement computing or position commutative operation mode the dynamic encryption polyphone is encrypted with the video-audio signal that receives and demodulating unit was received according to this dynamic encryption string, form enciphered video data, via after knowing this dynamic encryption arithmetic logic that the unit uses and encrypting the dynamic decrypting device deciphering of used character string, transfer to application program unit again by driver element.
So, can make video reception mechanism and play the enciphered data of mechanism when linking up and be difficult for being cracked, and the purpose of the video data when reaching effective protection transmission.
Description of drawings
Fig. 1 is a three-dimensional appearance schematic diagram of the present invention.
Fig. 2 is a basic framework schematic diagram of the present invention.
Fig. 3 is the block schematic diagram of user mode of the present invention.
Fig. 4 is known user mode block schematic diagram.
Label declaration:
Play mechanism's 1 driver element 11
Dynamic encryption string 111 dynamic decrypting device 12
Connecting interface 21 receives and demodulating unit 22
Antenna 221 dynamic encryption unit 23
Enciphered video data 231 storage facilitiess 3
Display device 4 is play mechanism 5
Driver element 51 decrypting device 52
Application program unit 53 TV card 6
Receiving element 61 ciphering units 62
Transmission unit 63 coffrets 7
Storage facilities 8 display devices 9
Embodiment
See also Figure 1 and Figure 2, be respectively three-dimensional appearance schematic diagram of the present invention and basic framework schematic diagram of the present invention.As shown in the figure: the present invention is a kind of encipher apparatus for image and sound transmission; at least constituted by a broadcast mechanism and a video reception mechanism; can make video reception mechanism and play the enciphered data of mechanism when linking up and be difficult for being cracked, and the purpose of the video data when reaching effective protection transmission.
The above-mentioned broadcast mechanism of carrying 1 can handle relevant video-audio signal, and this broadcast mechanism 1 includes a driver element 11, a dynamic decrypting device 12 that is connected with driver element 11 at least, reaches an application program unit 13 that is connected with driver element 11.
This video reception mechanism 2 links with above-mentioned broadcast mechanism 1 with a connecting interface 21, it includes one at least and can receive outside video-audio signal and it is compressed the reception of modulation and demodulating unit 22, an and dynamic encryption unit 23 that is connected with reception and demodulating unit 22, wherein this connecting interface 21 can be USB interface, SATA interface, pcmcia interface, CardBus interface or be PCI-e interface or for the E-SATA interface, this reception and demodulating unit 22 have an antenna 221, and wherein this antenna 221 can be single antenna, a couple of days line, collapsible antenna or planar antennas.In this way, constitute a brand-new encipher apparatus for image and sound transmission by said structure.
See also shown in Figure 3ly, be the block schematic diagram of user mode of the present invention.As shown in the figure: during utilization, this video reception mechanism 2 can be linked with broadcast mechanism 1 by connecting interface 21, and this broadcast mechanism 1 is according to multimedia video equipment such as the computer that is required to be, PDA, mobile phone, digital cameras; And when the reception of video reception mechanism 2 and demodulating unit 22 receive outside video-audio signal and compress modulation, simultaneously by the driver element 11 of playing mechanism 1 transmit one produce at random and between 0.2～2.0 second conversion dynamic encryption string 111 once to video reception mechanism 2, allow dynamic encryption unit 23 according to this dynamic encryption string 111 with mutual exclusion displacement computing (XOR, Shift), or the mode of position commutative operation (Change bits) is encrypted dynamic encryption string 111 together with the video-audio signal that receives and demodulating unit 22 is received, and formation enciphered video data 231, again this enciphered video data 231 is transferred to dynamic decrypting device 12 afterwards, because this dynamic decrypting device 12 is known dynamic encryption unit 23 employed arithmetic logics and is encrypted used character string, so this dynamic decrypting device 12 transfers to driver element 11 after enciphered video data 231 can being deciphered, transfer to application program unit 13 by driver element 11 again, allow the user select to store or play video data after this deciphering, when the user selects to store, the user can set up required password on their own, and this video data code-locked and enactment document name are stored in the storage facilities 3, in order to follow-up reading; If when the user selects to play, video data is decoded into the form that can play is play by display device 4, so that being provided, the user views and admires the relevant video-audio data that video reception mechanism 2 is received.
In sum; encipher apparatus for image and sound transmission of the present invention can effectively improve the various shortcoming of prior art; enciphered data in the time of can making video reception mechanism and play mechanism's communication is difficult for being cracked; and can effectively protect the video data in when transmission; and then it is required that generation of the present invention can more progressive, more practical, more be met when using; really meet the application for a patent for invention important document, proposed patent application in accordance with the law.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102025709A CN101437143B (en) | 2007-11-16 | 2007-11-16 | Audio and video transmission encryption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102025709A CN101437143B (en) | 2007-11-16 | 2007-11-16 | Audio and video transmission encryption device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101437143A CN101437143A (en) | 2009-05-20 |
| CN101437143B true CN101437143B (en) | 2011-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007102025709A Expired - Fee Related CN101437143B (en) | 2007-11-16 | 2007-11-16 | Audio and video transmission encryption device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101437143B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201201037A (en) | 2010-06-22 | 2012-01-01 | Novatek Microelectronics Corp | Electronic apparatus, display driving apparatus, and digital content displaying method |
| CN102314826A (en) * | 2010-06-30 | 2012-01-11 | 联咏科技股份有限公司 | Electronic device, display driving device and digital content display method thereof |
| CN103377326B (en) * | 2012-04-13 | 2017-07-11 | 腾讯科技（北京）有限公司 | A kind of dynamic web page program code obscures encryption method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1137723A (en) * | 1994-11-26 | 1996-12-11 | Lg电子株式会社 | Illegal view and copy protection method in digital video system and controlling method thereof |
| WO1999022372A1 (en) * | 1997-10-24 | 1999-05-06 | Sony Electronics, Inc. | A method and a system for transferring information using an encryption mode indicator |
| CN1617583A (en) * | 2003-11-11 | 2005-05-18 | 吴怀正 | Digital signal condition receiving system |
| CN1921613A (en) * | 2005-08-28 | 2007-02-28 | 胡瑞恒 | Method and device for identifying genuine-fake of video signal |
-
2007
- 2007-11-16 CN CN2007102025709A patent/CN101437143B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1137723A (en) * | 1994-11-26 | 1996-12-11 | Lg电子株式会社 | Illegal view and copy protection method in digital video system and controlling method thereof |
| WO1999022372A1 (en) * | 1997-10-24 | 1999-05-06 | Sony Electronics, Inc. | A method and a system for transferring information using an encryption mode indicator |
| CN1617583A (en) * | 2003-11-11 | 2005-05-18 | 吴怀正 | Digital signal condition receiving system |
| CN1921613A (en) * | 2005-08-28 | 2007-02-28 | 胡瑞恒 | Method and device for identifying genuine-fake of video signal |
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| Publication number | Publication date |
|---|---|
| CN101437143A (en) | 2009-05-20 |
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