CN1811957A - Antiunauthorized copying optical disk and playing equipment thereof - Google Patents
Antiunauthorized copying optical disk and playing equipment thereof Download PDFInfo
- Publication number
- CN1811957A CN1811957A CNA2005100057621A CN200510005762A CN1811957A CN 1811957 A CN1811957 A CN 1811957A CN A2005100057621 A CNA2005100057621 A CN A2005100057621A CN 200510005762 A CN200510005762 A CN 200510005762A CN 1811957 A CN1811957 A CN 1811957A
- Authority
- CN
- China
- Prior art keywords
- identification code
- laser disc
- genuine piece
- pirate
- reflector element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
An anti-stealing copied disk has register regions for digital information and true product identification codes, in which, the digital information register region stores information identification codes and the true product identification code register region stores the identification codes for true products formed by multiple high and low reflection units and the reflection rate of the low is designed to low enough to prevent a known carving machine from copying it on a recordable disk correctly, further more, the extension length of it is designed long enough to prevent the known disk carving machine from copying it correctly.
Description
Technical field
The present invention relates to a kind of laser disc and playback equipment thereof, relate in particular to a kind of laser disc and playback equipment thereof that prevents illegal pirate.
Background technology
The most widely used now digital information recording medium, surely belong to the video disc that utilizes the light storing technology, compact disc-digital audio (Compact Disk-Digital Audio for example, CD-DA) or digital multi-purpose laser disc (Digital Versatile Disk, DVD) or the like, it all is referred to as laser disc (Optical Disk) in this manual.Laser disc has the information storage density of superelevation, adds its cheap cost and being easy to carry about with one property, has promoted the preservation and the circulation of information greatly.Along with writable formula laser disc, for example CD-R, CD-RW, DVD-R, with the release of DVD-RW and day by day popularizing of compact disc-recordable (CD or DVD Recorder), now the mass society masses all can store voluntarily easily or copy digital information in laser disc.
In other words, buy the laser disc of authorizing the consumer through former factory after, the consumer can utilize writable formula laser disc and CD writers, will be through the stored digital contents copy of the laser disc of former factory mandate to writable formula laser disc.Yet the behavior that this kind copies privately but is to belong to the pirate behavior of violating literary property, and thereby causes the legal authorization manufacturer that peddles laser disc to suffer serious impairment of benefit.
Therefore, expect to have a kind of laser disc and playback equipment thereof that prevents pirate, protect the computer software literary property thus effectively, and promote commercial interest and public and social interest.
Summary of the invention
At foregoing problems, one object of the present invention is to provide a kind of laser disc that prevents pirate, in order to protect the computer software literary property effectively.
Another object of the present invention is to provide a kind of laser disc playback equipment, in order to play the laser disc that can prevent pirate.
According to one aspect of the present invention, a kind of laser disc of anti-pirate is provided, have a digital interblock and a genuine piece identification code recording district.The digital information recording district stores a message identification code, and genuine piece identification code recording district then stores a genuine piece identification code.Genuine piece identification code recording district is formed by a plurality of high reflector elements and low reflector element.The reflectivity of low reflector element is designed to low to preventing that effectively general compact disc-recordable correctly is copied to it on writable formula laser disc.Particularly very person, the development length of low reflector element is designed to grow up to preventing that effectively general compact disc-recordable correctly is copied to it on writable formula laser disc.
According to another aspect of the present invention, provide a kind of laser disc playback equipment, in order to play anti-pirate laser disc.The anti-pirate laser disc of axis system rotation.The numerical information read head reads the digital information recording district of anti-pirate laser disc.Track-seeking system mobile digital information read head.In response to the numerical information read head, numerical information sensing circuit output numerical information.In response to the numerical information sensing circuit, the message identification code circuit for detecting captures message identification code.Genuine piece identification code read head reads the genuine piece identification code recording district of anti-pirate laser disc.In response to genuine piece identification code read head, genuine piece identification code sensing circuit output genuine piece identification code.The identification code comparator circuit compares genuine piece identification code and message identification code.When genuine piece identification code and message identification code met mutually, identification code comparator circuit control figure information sensing circuit continued to export numerical information in response to the numerical information read head.
Description of drawings
Fig. 1 shows the floor map according to anti-pirate laser disc of the present invention;
Fig. 2 (a) shows a reflectance varies that track record presented along the digital information recording district;
Fig. 2 (b) shows a reflectance varies that track record presented along genuine piece identification code recording district;
Fig. 3 shows the playback equipment that is used for anti-pirate laser disc according to of the present invention;
Fig. 4 shows the operational flowchart that is used for the playback equipment of anti-pirate laser disc according to of the present invention;
Fig. 5 (a) shows a reflectance varies that track record presented along genuine piece identification code recording district;
The reflectance varies of the mistake that the genuine piece identification code recording district of Fig. 5 (b) displayed map 5 (a) forms via the illegal pirate of known compact disc-recordable.
Detailed Description Of The Invention
By explanation and accompanying drawing hereinafter, will make aforementioned and other purposes of the present invention, feature, more obvious with advantage.Here describe in detail according to a preferred embodiment of the invention with reference to the accompanying drawings.
Fig. 1 shows according to the floor map that prevents the laser disc 10 of pirate of the present invention.With reference to Fig. 1, the laser disc 10 of anti-pirate has a discoid substrate 11, normally the transparent plastic flat board that is formed by polycarbonate (Polycarbonate).The center position of discoid substrate 11 forms a circular open 12, in order to the main shaft (Spindle) that passes the laser disc playback equipment.On discoid substrate 11, scribble a reflection horizon 13, read light beam in order to storage of digital information and reflection.In foundation anti-pirate laser disc 10 of the present invention, reflection horizon 13 is divided into two parts, and wherein first is as digital information recording district 14, and second portion is as genuine piece identification code recording district 15.
Particularly, digital information recording district 14 can be via general optical read head, and for example the optical read head of CD or DVD player captures wherein stored information.All can the digitized information content in order to store music, programmed instruction, audio and video information or lteral data etc. in digital information recording district 14.Digital information recording district 14 stored information can be copied on the writable formula laser disc via general CD or DVD CD writers.Therefore, in order to prevent illegal pirate behavior, laser disc 10 according to anti-pirate of the present invention stores a predetermined message identification code especially in digital information recording district 14, and additionally be provided with genuine piece identification code recording district 15 according to anti-pirate laser disc 10 of the present invention, in order to store a genuine piece identification code.This genuine piece identification code is corresponding to this message identification code, and can't hereinafter will illustrate in further detail via general CD or DVD CD writers copy.In the embodiment shown in fig. 1, genuine piece identification code recording district 15 is one or more track records (Recording Track) that are placed in the outermost in reflection horizon 13.
Generally speaking, the mode of laser disc 10 store informations is to form lower chase unit (Pit) of reflectivity and the higher track unit (Land) of reflectivity on reflection horizon 13, for example utilizes master mold punching press (Press-Molding) to form or laser beam burning formation.When the optical read head illumination beam arrived reflection horizon 13, sensing circuit utilized reflected light and records the high or low of reflectivity, and then converts the digital signal of " 1 " or " 0 " accordingly to.
Fig. 2 (a) shows a reflectance varies that track record presented along digital information recording district 14.With reference to Fig. 2 (a), on the track record in digital information recording district 14, arranging a plurality of high reflector element and a plurality of low reflector elements with reflectivity R2 with reflectivity R1, be used for storing binary data 21.When digital information recording district 14 was read by the light beam of optical read head, each high reflector element can be represented " 1 " sign indicating number in the binary data, and each low reflector element then can be represented " 0 " sign indicating number in the binary data.Numerical information and message identification code stored in digital information recording district 14 all can read or utilize known compact disc-recordable to copy via known optical read head.
Fig. 2 (b) shows a reflectance varies that track record presented along genuine piece identification code recording district 15.With reference to Fig. 2 (b), on the track record in genuine piece identification code recording district 15, arranging a plurality of high reflector element and a plurality of low reflector elements with reflectivity R3 with reflectivity R1, be used for storing genuine piece identification code 22.In the present invention, the genuine piece identification code is corresponding to message identification code, but both storing modes are with to read mode different greatly.Comparison diagram 2 (a) and 2 (b) as can be known, the reflectivity R3 of the low reflector element in genuine piece identification code recording district 15 is much smaller than the reflectivity R2 of the low reflector element in digital information recording district 14.In addition, the development length of the low reflector element in genuine piece identification code recording district 15 is much larger than the development length of the low reflector element in digital information recording district 14.In such cases, genuine piece identification code recording district 15 only can be by authorizing manufacturer utilize the mode of master mold punching press to form.In other words, genuine piece identification code recording district 15 stored genuine piece identification codes 22 can't be utilized known compact disc burning device burning or be copied on the writable formula laser disc.Therefore, when the laser disc of illegal pirate is desired to play, because the genuine piece identification code of being read according to laser disc playback equipment of the present invention be different from message identification code or even can't read any suitable genuine piece identification code, so the literary property warning message will demonstrate and shut down.Thus, the present invention makes the laser disc of illegal pirate become effectively can't to play and is utterly useless.
Fig. 3 shows the playback equipment 30 that is used for anti-pirate laser disc 10 according to of the present invention.The operational flowchart of the laser disc playback equipment 30 of Fig. 4 displayed map 3.Here describe playback equipment 30 and the method for operating thereof that is used for anti-pirate laser disc 10 according to of the present invention in detail with reference to Fig. 3 and 4.
Numerical information read head 33 is by seeking 35 controls of rail motor, to move to the track record that will read.Yet genuine piece identification code read head 34 is fixed in a preposition, and it is corresponding to genuine piece identification code recording district 15.Numerical information sensing circuit 41 receives from the signal of numerical information read head 33 and converts binary signal (the step S1 of Fig. 4) to.Genuine piece identification code sensing circuit 42 receives from the signal of genuine piece identification code read head 34 and converts binary signal (the step S2 of Fig. 4) to.
Message identification code circuit for detecting 43 captures this message identification code that stores in advance (the step S3 of Fig. 4) from the binary signal that numerical information sensing circuit 41 obtains.Subsequently, message identification code circuit for detecting 43 exports the message identification code that is captured to identification code comparator circuit 44.On the other hand, genuine piece identification code sensing circuit 42 output genuine piece identification codes are to identification code comparator circuit 44.Identification code comparator circuit 44 is judged genuine piece identification code whether conform to message identification code (the step S4 of Fig. 4).When the genuine piece identification code was different from message identification code, identification code comparator circuit 44 made acknowledge circuit 45 show literary property warning message (the step S5 of Fig. 4) on display 50.In addition, identification code comparator circuit 44 outputs to motor control circuit 46 with stop signal, make Spindle Motor 32 with seek rail motor 35 and shut down.When the genuine piece identification code was same as message identification code, identification code comparator circuit 44 made numerical information sensing circuit 41 continue to read and exports numerical information to numerical information decoding circuit 47 (the step S6 of Fig. 4).47 pairs of numerical informations of numerical information decoding circuit are decoded (the step S7 of Fig. 4), subsequently by display 50 playing video information (the step S8 of Fig. 4) and by loudspeaker 60 back sound information (the step S9 of Fig. 4).
Fig. 5 (a) shows a reflectance varies that track record presented along genuine piece identification code recording district 15.With reference to Fig. 5 (a), genuine piece identification code 51 has the high reflector element of reflectivity R1 and the low reflector element of reflectivity R3.As previously mentioned, reflectivity R3 and its development length of low reflector element are not can be formed by known CD and DVD CD writers, only can utilize the mode of master mold punching press to form.The reflectance varies of the mistake that the genuine piece identification code recording district 15 of Fig. 5 (b) displayed map 5 (a) forms via the illegal pirate of known compact disc-recordable.With reference to Fig. 5 (b), known compact disc-recordable only can form the unit of reflectivity R2 on writable formula laser disc, and the development length of this element is shorter.In the case, the low reflector element R3 of genuine piece identification code 51 will be copied by a succession of junior unit 52 with reflectivity R2 and be formed.When the laser disc of this illegal pirate is positioned over when desiring to play in the laser disc playback equipment 30 of the present invention, because the light beam that reads that genuine piece identification code read head 34 is sent has bigger wavelength and luminous point, therefore the reflectivity that reflected light presented will be average reflectance Rave, and it is worth greater than reflectivity R3.If this average reflectance Rave is greater than the reflection at critical rate of being scheduled to, then genuine piece identification code sensing circuit 42 will judge that becoming the data of being read is the data of high reflectance but not the data of antiradar reflectivity.Because the laser disc of illegal pirate can't provide genuine piece identification code and the message identification code that meets mutually, so laser disc playback equipment 30 shows literary property warning message and shut-down operation under the control of identification code comparator circuit 44.Therefore, the present invention prevents the behavior of illegal pirate laser disc effectively, thereby promotes commercial interest and public and social interest.
Though the present invention is illustrated as illustration via preferred embodiment, it should be understood that to the invention is not restricted to the embodiment that this is disclosed.On the contrary, this invention is intended to contain is tangible various modification and similar configuration to those skilled in the art.Therefore, the scope of claims should be according to the widest explanation, and this type of is revised and similar configuration to contain all.
Claims (10)
1, a kind of anti-pirate laser disc comprises:
A substrate has an opening that is positioned at this substrate center position, and
A reflection horizon is formed on the surface of this substrate, wherein:
This reflection horizon has:
A digital interblock, in order to storage of digital information and a predetermined message identification code, this digital information recording district is formed by a plurality of first reflector elements and a plurality of second reflector element, and wherein the reflectivity of this first reflector element is greater than the reflectivity of this second reflector element, and
A genuine piece identification code recording district, in order to store a genuine piece identification code, make this genuine piece identification code corresponding to this message identification code, this genuine piece identification code recording district is formed by a plurality of the 3rd reflector elements and a plurality of the 4th reflector element, wherein the reflectivity of the 3rd reflector element is greater than the reflectivity of the 4th reflector element, and this reflectivity of the 4th reflector element is less than this reflectivity of this second reflector element.
2, anti-pirate laser disc as claimed in claim 1, wherein:
The development length of described the 4th reflector element is greater than the development length of described second reflector element.
3, anti-pirate laser disc as claimed in claim 1, wherein:
The described reflectivity of described the 3rd reflector element is substantially equal to the described reflectivity of described first reflector element.
4, anti-pirate laser disc as claimed in claim 1, wherein:
Described genuine piece identification code recording district is arranged at the periphery in described digital information recording district.
5, anti-pirate laser disc as claimed in claim 1, wherein:
The described reflectivity of described the 4th reflector element is designed to low to preventing that effectively the known compact disc-recordable from correctly copying it on the writable formula laser disc.
6, anti-pirate laser disc as claimed in claim 1, wherein:
The development length of described the 4th reflector element is designed to grow up to preventing that effectively the known compact disc-recordable from correctly copying it on the writable formula laser disc.
7, a kind of laser disc playback equipment, in order to play an anti-pirate laser disc, this laser disc playback equipment comprises:
An axis system should be prevented the pirate laser disc in order to rotate;
A numerical information read head is in order to read a digital interblock of this anti-pirate laser disc;
A track-seeking system is in order to move this numerical information read head;
A numerical information sensing circuit is in order to export numerical information in response to this numerical information read head;
A message identification code circuit for detecting is in order to capture a message identification code in response to this numerical information sensing circuit;
A genuine piece identification code read head is in order to read the genuine piece identification code recording district of this anti-pirate laser disc;
A genuine piece identification code sensing circuit is in order to export the genuine piece identification code in response to this genuine piece identification code read head; And
An identification code comparator circuit, in order to relatively this genuine piece identification code and this message identification code, make when this genuine piece identification code and this message identification code meet mutually, control this numerical information sensing circuit continuation and export this numerical information in response to this numerical information read head.
8, laser disc playback equipment as claimed in claim 7, wherein:
Described genuine piece identification code read head maintains static.
9, laser disc playback equipment as claimed in claim 7 also comprises:
A motor control circuit, in order to control described axis system and described track-seeking system, wherein:
When described genuine piece identification code and described message identification code are not when meeting mutually, described identification code comparator circuit is controlled this motor control circuit and is made described axis system and described track-seeking system shut-down operation.
10, laser disc playback equipment as claimed in claim 7 also comprises:
An acknowledge circuit in order to not to be when meeting mutually at described genuine piece identification code and described message identification code, shows a literary property warning message on a display, and
A digital information decoding circuit is in order to the described numerical information of decoding from described numerical information sensing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100057621A CN1811957A (en) | 2005-01-25 | 2005-01-25 | Antiunauthorized copying optical disk and playing equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100057621A CN1811957A (en) | 2005-01-25 | 2005-01-25 | Antiunauthorized copying optical disk and playing equipment thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1811957A true CN1811957A (en) | 2006-08-02 |
Family
ID=36844818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100057621A Pending CN1811957A (en) | 2005-01-25 | 2005-01-25 | Antiunauthorized copying optical disk and playing equipment thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1811957A (en) |
-
2005
- 2005-01-25 CN CNA2005100057621A patent/CN1811957A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1155001C (en) | Hybrid disc and method for discriminating same | |
| US20020114238A1 (en) | Optical disk, and recording/reproducing apparatus and recording method for optical disk | |
| CN101088125A (en) | Multilayer dual optical disk | |
| US6597648B1 (en) | Optical disk having anti-piracy function and method of fabricating and authenticating the optical disk | |
| KR20070044459A (en) | Device for and method of recording information on a record carrier | |
| EP1629473B1 (en) | Improved multi-layer optical disc format | |
| EP1204101B1 (en) | Recordable optical disk | |
| KR100470521B1 (en) | Optical disk medium and optical disk identification method | |
| CN1811957A (en) | Antiunauthorized copying optical disk and playing equipment thereof | |
| JP2001250324A (en) | Device and method for recording | |
| JPH07220284A (en) | Disk and disk reproducing device | |
| US8279731B2 (en) | Preventing unauthorized use of optical discs | |
| US7907492B1 (en) | Data storage medium with improved multi-session recording format | |
| JP2002288883A (en) | Optical recording medium and discriminating device | |
| KR100306029B1 (en) | Optical discs capable of true discrimination and methods of making and discrimining them | |
| CN1251224C (en) | Disc discriminating method and apparatus for discriminating DVD disc variety | |
| JPH0973634A (en) | Optical disk and its production | |
| KR100408278B1 (en) | Optical recording medium on which visible watermark is recorded | |
| US20050058039A1 (en) | Multi-standard optical disk and method and apparatus of reading from and recording to the disk | |
| CN101556810A (en) | Optical storage medium | |
| Mandal et al. | Optical Storage Media | |
| CN104252871A (en) | Disc Playing Device And Disc Playing Method | |
| KR20080113294A (en) | Method and device for mounting a rewritable optical disc | |
| JP2005056466A (en) | Optical disk device | |
| TWM268708U (en) | Anti-piracy optical disk and apparatus for playing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |