CN201315155Y - Anti-piracy CD (compact disc) - Google Patents

Abstract

The utility model relates to a read-only anti-piracy CD (compact disc). The read-only anti-piracy CD comprises a disc base, a data layer, a protection layer and a printing layer. A color changing layer is arranged between the disc base and the data layer, and photochromic materials are coated on the disc base in a spinning manner to form the color changing layer. In the reading process of CD data, under the function of reading light, color changing layer materials of the transparent color changing layer gradually becomes nontransparent; after certain number of times is achieved, the intensity of laser reflection is gradually reduced until data information stored in the CD cannot be read; software encryption is carried out, so as to limit the anti-piracy CD not to be downloaded or copied separately; and hacker aces do not have enough time to crack the anti-piracy CD within limited utilizing number of times, so as to realize the anti-piracy function. The data layer of the anti-piracy CD only records data, and the color changing layer which is additionally arranged only gradually destroys the reading performance of the CD without the data recording function until the CD is automatically destroyed within the limited number of times for reading the data, so as to achieve the purpose of anti-piracy.

Description

A kind of anti-pirate CD-disc

Technical field

The utility model relates to a kind of CD of storing data information, specifically a kind of anti-pirate CD-disc of limited read-around number.

Background technology

Read-only optical disc is according to data storage method at present, mainly be divided into two kinds: the read-only optical disc that () is traditional, data directly are compressed on the dish base by stamper, this CD is made up of dish base, data Layer, protective seam and printed layers, also will be through steps such as metal sputtering, spin coating protective seams after data Layer suppresses; (2) CD-R and DVD-R CD; data are recorded in the recording layer of particular dye formation; this CD is made up of dish base, recording layer, protective seam and printed layers etc.; after dish based injection molding moulding and cooling, increased the production run of recording layer dye spin coating; the dyestuff of video disc recording layer mainly is luminous sensitivity height such as phthalocyanine, the organic compound of stable performance.。The recording process of these materials is to utilize the thermal effect of laser to ablate on the storage medium surface or bubble, then by posting field and not between the posting field difference information of carrying out of reflectivity read.Compare with common CD, it has realized disposable data recording and permanent the preservation.

These two kinds of optical disk reading outdegrees are controlled the limited read-around number of CD even use dongle to encrypt all without limits, just also are easy to be cracked to unlimited read-around number earlier by hacker master-hand, further decipher and steal the data message in the CD then; This just opens convenience for piracy, makes intellecture property can not get effective protection.

CN1598947A discloses a kind of anti-pirate CD-disc, its recording layer adopts photochromic material, utilize the photochromic properties of recording layer, make and be read in the process in data, photochromic material issues biochemical variation in effect of reading light, make the degree of modulation signal that was stored in the data on the CD originally constantly reduce, cause not read information at last.But on data also stored record layer, the photochromic property of recording layer may influence the performance of video disc recording data.

And to traditional read-only optical disc, still not direct at present effective anti-piracy means at CD itself.

The utility model content

The purpose of this utility model is to provide a kind of directly unaffected at traditional read-only optical disc itself and data recording performance, simple anti-pirate CD-disc of production technology.The data that this CD deposits in exceed limited read-around number and just can't read read-onlyly, make the hacker have little time deciphering, can not copy download, thus realize anti-piracy function.

A kind of anti-pirate CD-disc comprises dish base, data Layer, protective seam and printed layers, is provided with photochromic layer between dish base and data Layer; Photochromic layer adopts photochromic material to be spin-coated on the dish base and makes; This CD is a kind of read-only optical disc, and its data layout is the read-only optical disc form, and storage mode is to utilize stamper directly to be compressed on the dish base, and passes through metal sputtering and formed data Layer; When data of optical disk is not read, the material of photochromic layer is a pellucidity, in the process that data of optical disk is being read, the photochromic layer material issues biochemical variation in effect of reading light, it is opaque that transparent photochromic layer becomes gradually, the laser reflection signal that optical pick-up head obtained constantly descends, reach certain number of times after, the intensity of laser-bounce is reduced to the data message that to a certain degree causes being stored in the CD and can't reads; When making anti-pirate CD-disc described in the utility model, also use software cryptography, limit anti-pirate CD-disc described in the utility model downloaded copy separately, hacker master-hand does not have time enough to crack in limited access times yet, thereby realizes anti-piracy function.

The beneficial effects of the utility model are:

1, the utility model is compared with traditional read-only optical disc, just increase the photochromic layer of a spin coating photochromic material, this photochromic layer does not have the function of record data, but destroy the reading performance of CD gradually, promptly constantly be read variable color takes place in the process, thereby the continuous reduction that causes laser to read signal effectively limits the reading times of CD at CD, until data CD self-destruction in limited read-around number, thereby make traditional read-only optical disc have anti-piracy function.

2, the utility model does not adopt the photochromic material that may influence the record data performance to make recording layer as the disclosed a kind of anti-pirate CD-disc of CN1598947A, but data directly are compressed on the dish base, has guaranteed the performance of data recording.

2. anti-pirate CD-disc of the present utility model, outside the discoloration layer, manufacture craft, equipment, starting material are identical with traditional read-only optical disc; Can utilize the production line of conventional optical disc, as long as increase the spin coating proceeding of photochromic layer, change the line of production conveniently, required expense is limited.

Description of drawings

Fig. 1 is the anti-pirate CD-disc schematic perspective view that office is cutd open.

Fig. 2 is the diagrammatic cross-section of anti-pirate CD-disc.

Embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

Embodiment 1 is shown in Fig. 1-2: a kind of anti-pirate CD-disc of musical-product of taxi, comprise dish base 1, data Layer 3, protective seam 4 and printed layers 5, be provided with photochromic layer 2 between dish base 1 and data Layer 3, photochromic layer 2 adopts photochromic material--and-two fragrant alkene (Diarylethenes) are spin-coated on the dish base 1 and make; This CD is a kind of read-only optical disc, and its data layout is the read-only optical disc form, and storage mode is to utilize stamper directly to be compressed on the dish base 1, and has formed data Layer 3 by the metallic aluminium sputter; When data of optical disk is not read, the material of photochromic layer is a pellucidity, in the process that data of optical disk is being read, the photochromic layer material issues biochemical variation in effect of reading light, it is opaque that transparent photochromic layer becomes gradually, the laser reflection signal that optical pick-up head 6 is obtained constantly descends, reach certain number of times after, the intensity of laser-bounce is reduced to the data message that to a certain degree causes being stored in the CD and can't reads; When making anti-pirate CD-disc described in the utility model, also use software cryptography, limit anti-pirate CD-disc described in the utility model downloaded copy separately, hacker master-hand does not have time enough to crack in limited access times yet, thereby realizes anti-piracy function.

For example, the user buys and can only play 10 times music CD, in the process that data of optical disk is read, photochromic material issues biochemical variation in effect of reading light, it is opaque that transparent photochromic layer becomes gradually, make the data-signal be stored in originally on the CD constantly reduce, reach 10 times after, the intensity of laser-bounce is reduced to the data message that to a certain degree causes being stored in the CD and can't reads.When making anti-pirate CD-disc described in the utility model, the data that deposit in are recorded on the data Layer 3 by the mode of stamper compacting, make not erasable read-only optical disc; Simultaneously, use software cryptography, limit anti-pirate CD-disc described in the utility model downloaded copy separately, hacker master-hand does not have time enough to crack in 10 times access times yet, thereby realizes anti-piracy function.

Embodiment 2 is shown in Fig. 1-2: disposable film copy anti-pirate CD-disc, comprise dish base 1, data Layer 3, protective seam 4 and printed layers 5, and between dish base 1 and data Layer 3, be provided with photochromic layer 2; Photochromic layer 2 adopts photochromic material-fulgide (Fulgide) to be spin-coated on the dish base 1 and makes.This CD is a kind of read-only optical disc, and its data layout is the read-only optical disc form, and storage mode is to utilize stamper directly to be compressed on the dish base 1, and forms data Layer 3 by the metallic aluminium sputter; When data of optical disk is not read, the photochromic layer material is a pellucidity, in the process that data of optical disk is being read, the photochromic layer material issues biochemical variation in effect of reading light, it is opaque that transparent photochromic layer becomes gradually, the laser reflection signal that optical pick-up head 6 is obtained constantly descends, and after the broadcast once, the intensity of laser-bounce is reduced to the data message that is stored in the CD and can't reads.Simultaneously, use software cryptography, limit anti-pirate CD-disc described in the utility model downloaded copy separately.

Hacker master-hand can not crack in playing process once, and data of optical disk can not be read data wherein.Like this, Film Releasing Co. just need not to cinema etc. with sheet unit in limited time between, the limit access times, sheet also will " be run " in new film projection peak period, be that a reel of film has just been put in first hand cinema, send a car to deliver to the second tame cinema immediately, after the cinema of putting often sit quietly and wait because of running the untimely spectators of allowing of sheet.Film Releasing Co. is as long as sell disposable film copy anti-pirate CD-disc for every family expenses sheet unit, needn't worry that film copy encroached right by piracy.

Claims (1)

1. anti-pirate CD-disc; comprise dish base (1), data Layer (3), protective seam (4) and printed layers (5); it is characterized in that: between dish base (1) and data Layer (3), be provided with photochromic layer (2); this optical disc data form is the read-only optical disc form; storage mode is to utilize stamper directly to be compressed on the dish base; and pass through metal sputtering and form data Layer (3), and use software cryptography.

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