CN1226728C

CN1226728C - Optical disk with enciphered effect

Info

Publication number: CN1226728C
Application number: CNB021418365A
Authority: CN
Inventors: 郭子豪
Original assignee: Laide Science & Technology Co Ltd
Current assignee: Laide Science & Technology Co Ltd; Ritek Corp
Priority date: 2002-08-23
Filing date: 2002-08-23
Publication date: 2005-11-09
Anticipated expiration: 2022-08-23
Also published as: CN1477627A

Abstract

The present invention discloses an enciphered optical disc. The data surface of a common optical disc is designed to be a non-planar state, and then, an adapter whose shape is complemental to the data surface of a common optical disc is sealed together with the common optical disc, so that the common optical disc can be read or written. When discs are not read, a disc holder can take off the adapter so as to prevent confidential data in the optical discs from being improperly read. The novel optical disc can prevent confidential data stored in the disc from being stolen, and can also further stop the phenomenon of epidemic piracy when used for storing non confidential data, such as video-audio optical discs, etc.

Description

The CD-RW discsCD-RW of tool cipher round results

Technical field

The invention relates to a kind of CD-RW discsCD-RW of tool cipher round results, particularly about a kind of CD-RW discsCD-RW of utilizing making of joint fastener to be used for reaching cipher round results.

Background technology

Under the development that science and technology is maked rapid progress, CD-RW discsCD-RW has replaced old data storage medium, and as disk sheet, video tape or audiotape, one jumps forms the topmost medium of present storage audio and video information.Under the situation that utilization rate is popularized all the more, how to protect the direction that the data of being stored in the medium are not stolen becomes a research then.

General data storage medium, its structure can simply be divided into three layers: the protective seam of the superiors, the reflection horizon of centre and the substrate of a polycarbonate (polycarbonate).In general, as long as CD-RW discsCD-RW thickness is between the 1-1.6 millimeter, all can be read by most of CD-ROM device on the market, read principle as shown in Figure 1, CD-RW discsCD-RW is by substrate 101, reflection horizon 103 and protective seam 113 constitute, and CD-ROM device has a radium-shine read head, according to the difference of desiring to read medium, this radium-shine read head (not illustrating) can send the laser light 11 that has specific wavelength together, this laser light 11 sees through wide-aperture lens (not illustrating) and focuses to CD-RW discsCD-RW 10, arrive reflection horizon 103 after passing substrate 101, reflected light 12 through reflection returns CD-ROM device, laser light is along with the hole, hole (pits) of disc surface or record has or not, and causes reflection light quantity different and show the digital signal of internal storage data; Therefore not vertical as if CD-RW discsCD-RW with laser light, or CD-RW discsCD-RW thickness is not inconsistent normal specifications, and laser light just is difficult to focus on the correct position, and can't read the data of laser disc.

Be understandable that the above-mentioned principle that reads is useful in all existing optical storage medias, for example CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-R, DVD-RAM etc.

On the encryption measures of video disc, once the mode that was suggested is that the thickness with the disk data recording layer is reduced to below the standard value, make video disc under the state of individualism, can't be read (as the applicant in described in " thin type laser disc " application case of application on May 10th, 2002 because of thickness is not enough, application number is 02119126.3), the user be if will read the video disc content and need install the transparent supplementary plate that a slice can be supplied video disc thickness in addition additional, and is like this then can help accurately focusing and read the content of video disc of laser light.This mode can effectively be protected the data of being stored in the video disc really, but but is a cipher mode that is easier to crack.In fact, as long as anyone possesses the slide that can supply video disc thickness, then the content of video disc just is easy to and can reads.Therefore this mode can not provide a careful video disc safeguard measure.

The utilization rate of optical storage media heal become universal now, how can protect the data of being stored in the CD-RW discsCD-RW not leak, especially confidential data; And aspect the use of music or film, how CD-RW discsCD-RW can be designed to be difficult for form by pirate, and with the protection literary property, prevent the pirate malpractice that is becoming increasingly rampant, be an important subject under discussion in fact.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of CD-RW discsCD-RW of tool cipher round results, and it can prevent that the data in the medium from suffering improper reading.

Another technical matters that the present invention will solve provides one can prevent that CD-RW discsCD-RW from suffering that illegal businessman's piracy makes profit, and therefore can protect the CD-RW discsCD-RW of the tool cipher round results of literary property.

The another technical matters that the present invention will solve is that a careful optical storage media cipher mode is provided again.

The technical matters again that the present invention will solve provides a special shape of optical storage media utilization and reaches the method that locks the laser disc content and be difficult for reading for other people.

The technical matters again that the present invention will solve provides a joint fastener, and the one side is one to constitute complementary shape with this structure base board of video disc, is used for and the driving fit of video disc body, forms a complete CD-RW discsCD-RW, to reach the purpose of laser disc shape lock.

For reaching above-mentioned purpose, the present invention discloses a kind of CD-RW discsCD-RW of tool cipher round results, comprise: a video disc body, the substrate of its data surface is designed to an on-plane surface state, and a joint fastener, the shape of one side surface and CD-RW discsCD-RW data surface substrate constitute complementary, are used for and the driving fit of video disc body, the opposite side surface then is a plane, and the material of this joint fastener is any transparent material; Wherein after the combination of this video disc body and this joint fastener, a complete CD-RW discsCD-RW.The video disc thickness that combination is finished is between 0.8 to 1.8 millimeter.

The technical matters again that the present invention will solve provides a kind of CD-RW discsCD-RW of tool cipher round results, can comply with dish-shaped difference and encipherment protection laser disc content out of the ordinary, forms the special construction of laser disc shape lock out of the ordinary.

In order to achieve the above object; can form different wavy surfaces or inclined-plane at this structure base board of video disc; must cooperate for a complementary relatively joint fastener; make the laser disc on this tool different wave face respectively or inclined-plane; the special complementary with it joint fastener of non-use; can not read the content of video disc, and reach according to the difference of dish distinctly encipherment protection laser disc content, form the special construction of laser disc shape lock out of the ordinary.

The technical matters again that the present invention will solve provides a kind of CD-RW discsCD-RW with local refinement effect.

In order to achieve the above object, can form the shape that constitutes complementation with this structure base board of video disc at a side surface of a joint fastener, so its size is different with the size of video disc body, and the user is merely able to read a part of data, and reaches the purpose of local data's locking.

When not using CD-RW discsCD-RW of the present invention, so design allows the user joint fastener can be taken off keeping, can not be brought use even so lacked the CD-RW discsCD-RW outflow of joint fastener, and can reach the effect of maintaining secrecy with guard against piracy.

Description of drawings

Fig. 1 is that CD-RW discsCD-RW reads principle schematic;

Fig. 2 is the laser disc diagrammatic cross-section of the first embodiment of the present invention;

Fig. 3 is the synoptic diagram that reads during according to the unassembled joint fastener of laser disc body of first embodiment of the invention;

Fig. 4 is the laser disc diagrammatic cross-section of the second embodiment of the present invention;

Fig. 5 is the business card type laser disc joint fastener synoptic diagram of the third embodiment of the present invention.

Embodiment

Below with reference to illustrating embodiments of the invention.Be noted that the dimension scale of each member is not to be that equal proportion in kind is represented in the diagram.

Shown in Figure 2 is the laser disc diagrammatic cross-section of the first embodiment of the present invention, and present embodiment is to do example with CD-ROM.As shown in the figure, CD-RW discsCD-RW 20 is to be combined by two parts, that is video disc body 21 of the first half and the joint fastener 23 of the latter half, a middle center pit 25 in addition.Laser disc body 21 comprises a protective seam 213, a reflection horizon 215 and a substrate 217 from top to bottom.This substrate 217 is a dip plane (on-plane surface), if directly the laser disc body is directly inserted the CD-ROM device running with this state, its result will reading shown in the synoptic diagram as Fig. 3, because the refraction factor of dip plane, make the incident laser light correctly to focus to read data on the CD-RW discsCD-RW, in addition, the thickness deficiency owing in the dip plane CD-RW discsCD-RW also will make CD-RW discsCD-RW read.

Joint fastener 23 can use the made of any light-permeable.When if the substrate of its material and video disc body is identical, then light is the refraction problems of carrying out between two different materials (that is different refractivity); Otherwise,, then when design, need consider the angle problem of the incident and the reflection of laser light in the lump if select to use and the different joint fastener of video disc body substrate material.In addition, the size of joint fastener is also not necessarily just the same with the size of video disc body, and can be made into the local engagement sheet, and it is with being intended to allow the user be merely able to read a part of data.With music CD is example, if manufacturing company's desire is made the happy audition band of New Development watch sound, then can utilize the notion of this local engagement sheet, make the consumer be merely able to hear the part, if audition satisfaction is wanted to buy, the complete joint fastener of resaling gives the consumer to be combined into complete CD-RW discsCD-RW.

Fig. 4 is the laser disc diagrammatic cross-section of the second embodiment of the present invention.Identical with first embodiment is that the CD-RW discsCD-RW of present embodiment also is divided into two parts, video disc body 31 of the first half and the joint fastener 33 of the latter half, a middle center pit 35 in addition.Laser disc body 31 from top to bottom comprises a protective seam 313, a reflection horizon 315 and a substrate 317.Different with last example is, the video disc body 31 of present embodiment is comparatively complicated with the form that engages of joint fastener 33, be not that a simple just inclined-plane engages, but be that line of symmetry tilts to the video disc dual-side with axis by center pit 35, so promptly improved the manufacture difficulty of joint fastener, also just tighter to maintaining secrecy of video disc content.Present embodiment has illustrated that the composition surface of the video disc body of CD-RW discsCD-RW of the present invention and joint fastener is not subjected to the restriction of any pattern or pattern, it can be an inclined-plane, or be that line of symmetry is to the monosymmetric figure of video disc with axis by the video disc center pit, for example monosymmetric inclined-plane, wave-like or the asymmetrical male and fomale(M﹠F) of other form or irregularly shaped etc., unique thickness that is restricted to after both combinations can reach the degree that general CD-ROM device can read (or writing), between 0.8 to 1.8 millimeter; Dioptric or the refraction effect of radium-shine light source on video disc that is caused because of the video disc difformity in addition must be controlled at also that CD-ROM device is tolerable to can read in (or writing) scope.

In addition; utilize the different gradient in above-mentioned inclined-plane of video disc; or the above-mentioned wave-like of combinations such as the different pitch of waves or waveform; then non-by a relative joint fastener of complementation fully; can not read the content of this video disc; make respectively the laser disc of different inclined-planes of this tool or wavy surface, have the effect of encipherment protection out of the ordinary, and can form the special shape lock construction of laser disc.

The present invention also can be used to make business card type laser disc, as long as the substrate manufacture of business card type laser disc is become the on-plane surface state, makes a joint fastener 50 as shown in Figure 5 again and gets final product.Business card type laser disc is owing to have only the business card size, in order to make the laser disc function read data in the laser disc, the form of its joint fastener can be held the fitting portion 52 of business card laser disc for making one in a disc, the shape of fitting portion bottom 53 need just can with the shape complementarity of business card optical disk substrate materials, then business card type laser disc can embed fitting portion smoothly, reach certain thickness, read data on it for CD-ROM device.Fitting portion bottom 52 can be and the one-body molded making of disc, also can be identical with business card type laser disc shape size, the individuality of individualism.

Be understandable that the present invention can be widely used on existing all optical storage medias, for example CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-R, DVD-R, DVD-RAM and MD, MO or high-density optical disk such as HD-DVD etc.And no matter also be not subject to the medium of Any shape, be that business card type, heart type, photograph type or the like all can use.

Aspect the contraposition of video disc body and joint fastener, the video disc of non-axle center symmetry can adopt filling mark mode, for example puts on loci on the relative position of video disc body and joint fastener, only needs during combination two loci alignment combination is got final product.Perhaps also can be when making video disc body and joint fastener, in position, for example video disc central, transparent district makes trip mechanism, and the user as long as smoothly trip is engaged, can finish contraposition easily when assembling both.Be noted that the present invention does not do any restriction to the mode of contraposition.

And aspect the locator meams of video disc body and joint fastener, then can use thin type double faced adhesive tape or other emplastics to paste simply, only otherwise can cause the mode of the obstacle that CD-RW discsCD-RW uses all to can be used to locate CD-RW discsCD-RW of the present invention, similarly, the present invention does not do any restriction to the locator meams of video disc body and joint fastener yet.

Technology contents of the present invention and technical characterstic disclose as above, yet the personage who is familiar with this technology still may be based on teaching of the present invention and announcement and done all replacement and modifications that does not deviate from spirit of the present invention.Therefore, protection scope of the present invention should be not limited to the content that embodiment discloses, and should comprise various do not deviate from replacement of the present invention and modifications.

Claims

1. the CD-RW discsCD-RW of a tool cipher round results is characterized in that, it comprises:

One video disc body, the substrate of its data surface are designed to an on-plane surface state; And

One joint fastener, the shape of one side surface and this video disc ontology data face substrate constitute complementary, can with the driving fit of video disc body, the opposite side surface then is a plane, and the material of this joint fastener is any transparent material;

Wherein after the combination of this video disc body and this joint fastener, a complete CD-RW discsCD-RW.

2. CD-RW discsCD-RW as claimed in claim 1, it is characterized in that described video disc body and this joint fastener the combination after thickness between 0.8 to 1.8 millimeter.

3. CD-RW discsCD-RW as claimed in claim 1, the substrate that it is characterized in that described video disc body is an inclined-plane.

4. CD-RW discsCD-RW as claimed in claim 1, the substrate that it is characterized in that described video disc body are one wavy.

5. CD-RW discsCD-RW as claimed in claim 1, the substrate that it is characterized in that described video disc body are one irregularly shaped.

6. it is line of symmetry with the axis by the video disc center pit that CD-RW discsCD-RW as claimed in claim 1, the substrate that it is characterized in that described video disc body present one, to the monosymmetric shape of video disc.

7. the CD-RW discsCD-RW of a tool cipher round results is characterized in that, it comprises:

One video disc body, the substrate of its data surface are one to be line of symmetry with the axis by the video disc center pit, to the monosymmetric shape of video disc; And

One joint fastener, one side are one to constitute complementary shape with this structure base board of video disc, are used for and the driving fit of video disc body, and the another side then is a plane, and the material of this joint fastener can be any transparent material;

8. CD-RW discsCD-RW as claimed in claim 7 is characterized in that being shaped as of described data surface substrate one is line of symmetry with the axis by the video disc center pit, and is monosymmetric wavy to video disc.

9. CD-RW discsCD-RW as claimed in claim 7 is characterized in that being shaped as of described data surface substrate one is line of symmetry with the axis by the video disc center pit, to the monosymmetric inclined-plane of video disc.

10. CD-RW discsCD-RW as claimed in claim 7, it is characterized in that described video disc body and this joint fastener the combination after thickness between 0.8 to 1.8 millimeter.