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Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk |
| RE40687 |
Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk
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| Patent Drawings: | |
| Inventor: |
Oshima, et al. |
| Date Issued: |
March 31, 2009 |
| Application: |
10/017,973 |
| Filed: |
December 7, 2001 |
| Inventors: |
Oshima; Mitsuaki (Kyoto, JP)
Gotoh; Yoshiho (Osaka, JP)
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| Assignee: |
Panasonic Corporation (Osaka, JP) |
| Primary Examiner: |
Moise; Emmanuel L |
| Assistant Examiner: |
Callahan; Paul |
| Attorney Or Agent: |
RatnerPrestia |
| U.S. Class: |
380/201; 235/489; 235/494; 369/275.1; 380/203; 705/51; 705/62; 726/31 |
| Field Of Search: |
380/201; 380/203; 380/241; 705/51; 705/62; 369/275.1; 369/286; 369/272.1; 369/273; 369/53.22; 269/462.01; 235/487; 235/488; 235/489; 235/490; 235/494; 235/454; 235/462; 726/31 |
| International Class: |
H04K 1/00 |
| U.S Patent Documents: |
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| Foreign Patent Documents: |
1059222; 4308680; 0 210 629; 0329122; 01 243237; 0 520 619; 0 545 472; 0545472; 0 549 488; 0553545; 553545; 4308680; 58-211343; 60-175254; 61-190734; 61-248250; 63-46541; 63-164043; 2-44448; 02-056750; 5-325193; 03-078178; 03-116441; 04-338872; 5-234321; 5-266576; 5-325193; 06-203412; 7-325712; 61-190734; 63-46541; 63-164043; 9101358 |
| Other References: |
Japanese Official Action dated Mar. 7, 2006. cited by other.
European Search Report dated Feb. 19, 2007. cited by other.
Chinese Official Action for CN 1059222A, date issued Nov. 26, 2004 with English translation. cited by other.
European Search Report for EP 04020082, dated Oct. 6, 2004. cited by other.
Japanese Official Action for JP 2002-235948, date mailed Sep. 28, 2004, with English translation. cited by other.
Japanese Official Action for JP 2002-235949, date mailed Sep. 28, 2004, with English translation. cited by other.
"Outline of Barcode Symbol", (see "JAN code standard" at http://www.barcode.ne.jp/about_barcode/code/index.html, with English translation. cited by other.
Official Action from the European Patent Office dated Mar. 28, 2003, for Application No. 01 108 949.7. cited by other.
Replication and BCA, [internet]http://www.panasonicdvd.com/rep.html, Dec. 2001. cited by other.
"NSM Storage--Jukebox and Storage ABC," [internet]http://www.storageminds.com/nsm/nsm_folders/folders/algemeen/gl- ossary_storage_and _jukebox.pdf, Dec. 2001. cited by other.
Japanese Official Action dated Nov. 19, 2002, for JP 2002-235948 with partial English translation. cited by other.
Japanese Official Action dated Nov. 19, 2002, for JP 2002-235949 with partial English translation. cited by other.
Korean Patent Official Action dated Mar. 5, 2003. cited by other.
European Search Report dated May 15, 1997. cited by other.
International Search Report dated Jan. 30, 1996. cited by other.
European Search Report dated Aug. 23, 2001, application No. EP01108949. cited by other. |
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| Abstract: |
An object of the present invention is to provide a marking forming apparatus, a method of forming a laser marking on an optical disk, a reproduction apparatus, an optical disk, and a method of manufacturing an optical disk, capable of providing a greatly improved copy prevention capability as compared to prior known construction. To achieve this object, in the optical disk of the invention, for example, a marking is formed by a laser on a reflective film of a disk holding data written thereon and at least position information of the marking or information concerning the position information is written on the disk in an encrypted form or with a digital signature appended thereto. |
| Claim: |
What is claimed is:
.[.1. A marking forming apparatus comprising: marking forming means for applying at least one marking to at least one reflective film formed to a disk; marking positiondetecting means for detecting at least one position of said marking; and position information output means for outputting said detected position at position information of said marking..].
.[.2. A marking forming apparatus according to claim 1, further comprising position information writing means for writing at least said output position information or information concerning said position information to said disk or to adifferent medium..].
.[.3. A marking forming means according to claim 2, wherein said position information writing means include encrypting means for encrypting at least said output position information or information concerning said position information, andwrites contents thus encrypted to said disk..].
.[.4. A marking forming apparatus according to claim 3, wherein when the encrypting means performs the encryption, it uses a secret key of a public key encryption function..].
.[.5. A marking forming apparatus according to claim 3, wherein said encrypting means includes first encrypting means for encrypting software feature information concerning features of software contents written to said disk and a sub public keyof a public key encryption function by using a master secret key of said public key encryption function, and second encrypting means for encrypting said position information or information concerning said position information by using a sub secret keycorresponding to said sub public key, and the writing at least said output position information or information concerning said position information means writing contents encrypted by said first encrypting means and contents encrypted by said secondencrypting means to said disk..].
.[.6. A marking forming apparatus according to claim 2, wherein said position information writing means includes digital signature means for applying a digital signature to at least said output position information or information concerningsaid position information, and the writing at least said output position information or information concerning said position information means writing information concerning a result of said digital signature application to said disk..].
.[.7. A marking forming apparatus according to claim 6, wherein when said digital signature means applies said digital signature, it uses a secret key of a public key encryption function..].
.[.8. A marking forming apparatus according to claim 6, wherein said digital signature means includes first digital signature means for applying a digital signature to software feature information concerning features of software contentswritten to said disk and to a sub public key of a public key encryption function by using a master secret key of said public key encryption function, and second digital signature means for applying a digital signature to said position information orinformation concerning said position information by using a sub secret key corresponding to said sub public key, and the writing at least said output position information or information concerning said position information means writing a result of theapplication of said digital signature by said first digital signature means and a result of the application of said digital signature by said second digital signature means to said disk..].
.[.9. A marking forming apparatus according to claim 2, wherein the position information writing means writes coexistently such information that are processed by using plural kinds of encryption techniques or digital signature techniques withregard to a same position information..].
.[.10. A marking forming apparatus according to claim 4, 5, 7, or 8, wherein said public key encryption function is an RSA function or an elliptic function..].
.[.11. A marking forming apparatus according to claim 10, wherein said disk is constructed by laminating two disks together..].
.[.12. A method of forming a laser marking to an optical disk, comprising the steps of: forming at least one disk; forming a reflective film to said formed disk; laminating two disks together, said disks including at least one disk with saidreflective film formed thereon; and forming at least one marking by a laser on said reflective layer of the laminated disks..].
.[.13. A reproduction apparatus comprising: position information reading means for reading position information of at least one marking or information concerning said position information, said marking being formed to at least one reflectivefilm formed to a disk and being detected for a position thereof, at least the position thus detected being output as said position information of said marking; marking reading means for reading information concerning at least one actual position of saidmarking; comparing/judging means for performing comparison and judgement by using a result of reading by said position information reading means and a result of reading by said marking reading means; and reproducing means for reproducing recorded dataon said optical disk in accordance with a result of the comparison and judgement performed by said comparing/judging means..].
.[.14. A reproduction apparatus according to claim 13, wherein at least said output position information or information concerning said position information is written to said disk by position information writing means..].
.[.15. A reproduction apparatus according to claim 14, wherein said position information writing means includes encrypting means for encrypting at least said output position information or information concerning said position information, andsaid position information reading means includes decrypting means corresponding to said encrypting means, and by using said decrypting means, decrypts said encrypted position information or information concerning said position information..].
.[.16. A reproduction apparatus according to claim 15, wherein when the encrypting means performs the encryption, it uses a secret key of a public key encryption function, and said decrypting means performs the decryption by using a public keycorresponding to said secret key..].
.[.17. A reproduction apparatus according to claim 15, wherein said encrypting means includes first encrypting means for encrypting software feature information concerning features of software contents written to said disk and a sub public keyof a public key encryption function by using a master secret key of said public key encryption function, and second encrypting means for encrypting said position information or information concerning said position information by using a sub secret keycorresponding to said sub public key, and said decrypting means includes first decrypting means for decrypting said encrypted software feature information and the encrypted sub public key of said public key encryption function, by using a master publickey corresponding to said master secret key, and second decrypting means for decrypting said encrypted position information or information concerning said position information by using the sub public key thus decrypted..].
.[.18. A reproduction apparatus according to claim 14, wherein said position information writing means includes digital signature means for applying a digital signature to at least said output position information or information concerning saidposition information, and writes information concerning a result of said digital signature application to said disk, and said position information reading means includes authenticating means corresponding to said digital signature means, and positioninformation extracting means for obtaining said position information from an authentication process performed by said authenticating means and/or from said information concerning the result of said digital signature application, when an output indicatingcorrectness of said authentication result is produced from said authenticating means, said comparing/judging means performs the comparison and judgement by using the position information obtained by said position information extracting means and theresult of reading by said marking reading means, and when said output indicating correctness is not produced, the reproduction is not performed..].
.[.19. A reproduction apparatus according to claim 18, wherein when said digital signature means applies said digital signature, it uses a secret key of a public key encryption function, and said authenticating means performs saidauthentication by using a public key corresponding to said secret key..].
.[.20. A reproduction apparatus according to claim 18, wherein said digital signature means includes first digital signature means for applying a digital signature to software feature information concerning features of software contents writtento said disk and to a sub public key of a public key encryption function by using a master secret key of said public key encryption function, and second digital signature means for applying a digital signature to said position information or informationconcerning said position information by using a sub secret key corresponding to said sub public key, and the writing at least said output position information or information concerning said position information means writing a result of the applicationof said digital signature by said first digital signature means and a result of the application of said digital signature by said second digital signature means to said disk, wherein said position information reading means includes: authenticating meansfor authenticating said digital signature-applied software feature information and sub public key of said public key encryption function, by using a master public key corresponding to said master secret key, and position information extracting means forobtaining said position information from said authentication process thereof and/or from the result of said digital signature application by using the sub public key obtained from said authentication process and/or from the result of said digitalsignature application, and when an output indicating correctness of said authentication result is produced from said authenticating means, said comparing/judging means performs the comparison and judgement by using the position information obtained bysaid position information extracting means and the result of reading by said marking reading means, and when said output indicating correctness is not produced, the reproduction is not performed..].
.[.21. A reproduction apparatus according to any one of claims 13 to 20, wherein the reproduction is not performed when, as a result of said comparison and judgement, the result of reading by said position information reading means and theresult of reading by said marking reading means do not agree with each other..].
.[.22. A reproduction apparatus according to claim 16, 17, 19, or 20, wherein said public key encryption function is an RSA function or an elliptic function..].
.[.23. A method of manufacturing an optical disk, comprising the steps of: forming at least one disk; forming a reflective film to said formed disk; applying at least one marking to said reflective film; detecting at least one position ofsaid marking; and outputting said detected position as position information of said marking, and encrypting said information for writing to said disk..].
.[.24. A method of manufacturing an optical disk, comprising the steps of: forming at least one disk; forming a reflective film to said formed disk; applying at least one marking to said reflective film, detecting at least one position ofsaid marking; and outputting said detected position as position information of said marking, and applying a digital signature in relation to said position information for writing to said disk..].
.[.25. An optical disk wherein at least one marking is formed by a laser to at least one reflective film of the disk holding data written thereon and at least position information of said marking or information concerning said positioninformation is written to said disk in an encrypted form or with a digital signature applied thereto..].
.[.26. An optical disk having a structure such that at least one reflective film is one of sandwiched directly and sandwiched indirectly between two members formed from material resistant to laser light, wherein at least one marking is formedby a laser to said reflective film..].
.[.27. A marking forming apparatus according to claim 9, wherein said disk is constructed by laminating two disks together..].
.Iadd.28. An optical disk comprising: a first substrate, an information recording layer formed on said first substrate, and a second substrate, wherein said information recording layer is formed between said first substrate and said secondsubstrate, said information recording layer has a track of a spiral shape, a data recording area and a barcode pattern are formed on said track, and said data recording area and barcode pattern are readable by light radiation..Iaddend.
.Iadd.29. An optical disk according to claim 28, further comprising another information recording layer formed on the second substrate..Iaddend.
.Iadd.30. A method of manufacturing an optical disk comprising the steps of: forming a first substrate; forming an information recording layer on the first substrate; and forming a second substrate; wherein said information recording layeris formed between said first substrate and said second substrate, said information recording layer has a track of a spiral shape, a data recording area and a barcode pattern are formed on said track, and said data recording area and barcode pattern arereadable by light radiation..Iaddend.
.Iadd.31. A method according to claim 30, further comprising the step of: forming another information recording layer on the second substrate..Iaddend. |
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