KR960703259A - 광기록매체정보의 불법복사 또는 불법설치 방지방법 및 장치 (method and system for prevention of illegal copy and install of information on optical recording media) - Google Patents

광기록매체정보의 불법복사 또는 불법설치 방지방법 및 장치 (method and system for prevention of illegal copy and install of information on optical recording media) Download PDF

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Publication number
KR960703259A
KR960703259A KR1019950705769A KR19950705769A KR960703259A KR 960703259 A KR960703259 A KR 960703259A KR 1019950705769 A KR1019950705769 A KR 1019950705769A KR 19950705769 A KR19950705769 A KR 19950705769A KR 960703259 A KR960703259 A KR 960703259A
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KR
South Korea
Prior art keywords
information
signal
detecting
physical feature
recording medium
Prior art date
Application number
KR1019950705769A
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English (en)
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KR100381116B1 (ko
Inventor
미쓰아키 오시마
요시호 고도
Original Assignee
마쓰시타 요이치
마쓰시타 덴키 산교 가부시키가이샤
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP7016865A external-priority patent/JPH08212681A/ja
Application filed by 마쓰시타 요이치, 마쓰시타 덴키 산교 가부시키가이샤 filed Critical 마쓰시타 요이치
Priority to KR10-2002-7012566A priority Critical patent/KR100381119B1/ko
Priority to KR10-2002-7012565A priority patent/KR100381118B1/ko
Publication of KR960703259A publication Critical patent/KR960703259A/ko
Application granted granted Critical
Publication of KR100381116B1 publication Critical patent/KR100381116B1/ko

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
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    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
    • G06F21/80—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in storage media based on magnetic or optical technology, e.g. disks with sectors
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    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
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  • General Physics & Mathematics (AREA)
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  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

광기록매체를 사용하여 재생하는 기록재생장치에 있어서, ROM형 디스크의 물리적 특징을 추출하여 암호화하고, 이 암호를 광디스크에 기록한다. 재생시에 이 암호를 평문화한 물리적 특징과 ROM 디스크에서 검출한 물리적 특징정보 등을 비교하여 일치하지 않을 경우에는 작동을 정지시킴에 따라 불법으로 복제된 디스크의 사용을 방지한다. 광기록매체(2)의 자기기록층(4)에 기록한 물리적 특징정보를 자기헤드(8)에 의하여 재생하여, 측정한 물리적 특징정보검지수단으로 측정한 정보와 대조함에 따라 복제매체를 검출한다.

Description

광기록매체정보의 불법복사 또는 불법설치 방지방법 및 장치 (METHOD AND SYS-TEM FOR PREVENT10N OF ILLEGAL COPY AND INSTALL OF INFORMATION ON OPTICAL RECORDING MEDIA)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제59도는 제1실시예에 있어서의 광학마아크를 이용한 복제방지방법의 디스크의 원리도.

Claims (88)

  1. 정보가 피트로서 기록된 원반형 광기록매체(2)를 회전구동하는 수단(17)과, 광기록매체로 부터 기록정보를 판독하는 광헤드(6)와, 광헤드를 광기록매체의 반지름방향으로 이동할 수 있는 헤드 이동수단(23)과 광헤드로 판독된 정보를 처리하는 신호처리수단 등을 구비한 정보재생장치에 있어서 광기록매체의 적어도 피트의 2차원배치 또는 피트의 형상을 포함하는 물리적 특징을 나타내는 것으로서, 광기록매체의 제조시에 암호화되어 기록된 제1물리특징정보(532)를 광헤드 또는 자기헤드로 판독된 정보로 부터 검출하는 제1물리정보검지수단 (743,38,665)과, 제1물리특징정보를 해독하는 암호해독수단(534)과, 광기록매체의 물리적 특징을 측정하여 제2물리특징정보를 얻는 수(17a,6,38,703a)과 제2물리특징정보를 제1물리특징정보와 대조하여, 양자간에 특정의 관계가 있는지 없는지를 판단하는 대조수단(535)과, 대조수단에서 제2물리특징정보가 제1물리특징정보에 대하여 특정의 관계에 있지 않을때에는 광기록매체로 부터 판독된 특정의 프로그램의 동작을 정지하거나, 광기록매체로부터 그후의 정보의 판독을 정지하거나, 광기록매체로 부터 판독되는 정보의 신호처리수단에 의한 소정의 처리를 정지하는 제어수단(717,665) 등을 구비한 것을 특징으로 하는 정보재생장치.
  2. 제1항에 있어서, 공개키이암호계 함수(695b,698b,735h)를 해독연산(698b,735s)에 사용하여 암호를 평문화하고, 제1물리특징정보를 포함하는 평문을 얻는 암호해독수단(534)을 구비한 것을 특징으로 하는 정보재생장치.
  3. 제2항에 있어서, 좌표위치검출수단(335)에 의하여 광기록매체상의 광기록신호의 좌표위치를 검출함에 따라 제2물리특징정보를 얻는 제2물리특징정보검출수단을 지닌 것을 특징으로 하는 정보재생장치.
  4. 제3항에 있어서, 특정의 기록신호의 기록매체상의 각도위치를 검출하는 각도위치검출수단(17a)에 의하여 제2물리특징정보를 얻는 좌표위치검출수단을 구비한 것을 특징으로 하는 정보재생장치.
  5. 제4항에 있어서, 좌표위치검출수단으로서 기록신호의 배치각도의 검지수단으로서 모터의 회전을 검지하는 회전검지수단(17)을 사용한 좌표검출수단을 구비한 것을 특징으로 하는 정보재생장치.
  6. 제5항에 있어서, 회전검지수단으로서 모터의 회전펄스검출수단(17a)을 구비한 것을 특징으로 하는 정보재생장치.
  7. 제6항에 있어서, 시간분할수단(737)에 의하여 모터의 회전펄스신호를 시간분할함에 따라 상기 회전펄스 보다 수가 많은 회전펄스신호를 얻어서 회전을 검지하는 회전검지수단을 구비한 것을 특징으로 하는 정보재생장치.
  8. 제5항에 있어서, 모터에 부착된 FG(17)의 회전펄스신호로 부터 회전을 검지하는 회전검지수단을 지닌 것을 특징으로 하는 정보재생장치.
  9. 제2항에 있어서, 트래킹변위량검출수단(554)에 의하여 트래킹변위량을 검출함에 따라 제2물리특징정보를 검출하는 제2물리특징정보검출수단을 구비하는 것을 특징으로 하는 정보재생장치.
  10. 제9항에 있어서, 인접하는 트래킹상에 있고, 또한 동일 각도상에 배치된 특정의 2가지 이상의 기록신호의 트랙변위량(554)과 상기 기록신호 각각의 배치각도를 각도위치검출수단(553)으로 검출함에 따라 제2물리특징정보를 얻는 것을 특징으로 하는 정보재생장치.
  11. 제9항에 있어서, 트래킹방향으로 분할된 여러개의 수광부(24b,24c)에 의하여 광기록층으로 부터의 반사광을 검출하여, 트래킹 오차신호를 얻는 트래킹량 검지수단(554)에 의하여 트래킹 변위량을 검출하는 트래킹 변위량검출수단(24a)을 구비한 것을 특징으로 하는 정보재생장치.
  12. 제1항에 있어서, 특정의 기록신호의 피트깊이를 검출함에 따라, 제2물리특징정보를 검출하는 피트깊이 검지수단(555)을 제2물리특징정보검지수단의 중에 구비한 것을 특징으로 하는 정보재생장치.
  13. 제12항에 있어서, 2치이상의 슬라이스레벨을 지닌 다치레벨 슬라이서(555b)를 사용하여 피트깊이의 얕은 피트영역을 검출하는 피트깊이 검지수단(555)을 구비한 것을 특징으로 하는 정보재생장치.
  14. 제13항에 있어서, 통상 깊이의 피트로 된 특정의 기록신호의 제1피트집단(561a)의 다음에 기록된 제1피트집단보다 피트깊이가 얕은 제2피트집단(56c)을 검지하는 피트깊이 검지수단(555)을 구비한 것을 특징으로 하는 정보재생장치.
  15. 제14항에 있어서, 특정의 기록신호로서 프레임 동기신호(738)을 이용한 것을 특징으로 하는 정보재생장치.
  16. 제13항에 있어서, 제1피트집단 중의 학습피트집단(560a)을 재생함에 따라 제1슬라이스레벨의 제1오프셋 전압(746)을 검출하여, 제1오프셋 전압으로 제1슬라이스레벨을 설정하고, 제2피트집 단(560b)을 재생하는 피트깊이 검지수단을 구비한 것을 특징으로 하는 정보재생장치.
  17. 제13항에 있어서, 제1슬라이스레벨을 만족하는 피트집단의 피트길이, 제2슬라이스레벨의 피트집단의 피트길이를 측정함에 따라 제2물리특징정보를 얻는 피트깊이 검지수단(555)을 구비한 것을 특징으로 하는 정보재생장치,
  18. 제13항에 있어서, 광량이 낮은 편의 슬라이스레벨을 제1슬라이스레벨로 하였을 경우, 제1슬라이스레벨만을 만족하고 제2슬라이스레벨을 만족하지 않는 피트의 검지신호를 다위(多位) 레벨슬라이서(555b)로 부터 받아서, 상기 검출신호의 수(739)률 계수기 (555c)로 측정함에 따라 제2물리특징정보를 얻는 피트깊이 검지부(555)를 지닌 것을 특징으로 하는 정보재생장치.
  19. 제1항에 있어서, 피트의 내압에 의하여 반사광량이 적은 제1저반사부(740)와 비피트부에 의한 제1반사부로 부터 반사율이 큰 고반사부(741)를 재생수단으로 검출함에 따라, 제1광기록신호를 재생하는 장치에 있어서 광기록신호영역(742)중에 설치되고, 또한 제 1저반사부보다 반사율이 낮은 제2저반사부(584)를 검출하는 제 1저반사부보다 낮은 반사광량의 제2저반사부를 검출하는 제2저반사부검지수단(586)의 검지신호에 기초하여 제2물리특징정보를 얻는 제2물리특징정보검지수단을 구비한 것을 특징으로 하는 정보재생장치.
  20. 제19항에 있어서, 2치 이상의 슬라이스레벨을 지닌 레벨슬라이서를 사용하고 제1광기록신호를 제1레벨슬라이서(386)에 있어서 제1슬라이스레벨에서 슬라이스함에 따라 제1광재생신호에서 제1디지털신호를 얻음과 동시에, 제2레벨슬라이서(586)에 있어서, 상기 제1슬라이스레벨보다 낮은 광량값의 재생신호에 대응하는 제2슬라이스레벨에서 재생신호를 슬라이스함에 따라 제2저반사부를 검출하는 제2저반사부검출수단을 구비한 것을 특징으로 하는 정보재생장치.
  21. 제20항에 있어서, 제2저반사부검출수단(586)의 제2저반사부 검사신호와, 재생수단(590)으로 검지된 제1 광재생신호의 정보에 기초하여, 제2저반사부의 위치 또한/또는 원주방향의 길이, 또한/또는 원주방향의 간격을 검출하는 제2저반사부위치검출수단(696)을 구비한 것을 특징으로 하는 정보재생장치.
  22. 제21항에 있어서, 제1광재생신호의 특정한 마아크신호를 마아크신호검출부(593)가 검출하였을때, 출력하는 마아크 검출신호에 기초하여, 제2저반사부의 위치 또한/또는 원주방향의 길이, 또한/또는 간격을 검지하는 제2저반사부 위치검출수단(596)을 구비한 것을 특징으로 하는 정보재생장치.
  23. 제22항에 있어서, 마아크신호로서 어드레스신호를 검출하는 마아크신호검출부(593)를 구비한 것을 특징으로 하는 정보재생장치.
  24. 제23항에 있어서, 재생블록신호를 계수기(558)로 산출한 카운트수와 어드레스신호에 의하여 제2저반사부의 위치 또한/또는 원주방향의 길이를 검출하는 제2저반사부위치검출수단(596)을 구비한 것을 특징으로 하는 정보재생장치.
  25. 제24항에 있어서, 어드레스신호와 카운터수단(598)으로 카운트한 프레임동기신호와 재생클록신호의 카운트수에 의하여 제2저반사부의 위치를 검출하는 제2저반사부위치 검출수단(596)을 구비 한 것을 특징으로 하는 정보재생장치.
  26. 제23항에 있어서, 제1광재생신호의 어드레스신호와, 프레임동기신호에 의하여 제2저반사부의 위치를 검출하는 제2저반사부위치검출수단(596)을 구비한 것을 특징으로 하는 정보재생장치.
  27. 제23항에 있어서, 제1광재생신호에 기초한 동기신호 재생수단(38a)의 재생클록수를 게수기 (598)로 카운트함에 따라, 제2저반사부의 위치 또는/또한 원주방향의 길이 또는/또한 원주방향의 간격정보를 검출하는 제2저반사부위치검출수단(596)을 구비한 것을 특징으로 하는 정보재생장치.
  28. 제27항에 있어서, EFM 복조수단(592)의 동기클록재생수단(38a)의 클록신호를 동기신호로서 검출하는 동기신호재생수단을 구비한 것을 특징으로 하는 정보재생장치.
  29. 제22항에 있어서, 마아크신호로서 CD의 서브코우드 신호중의 특정신호를 검출하는 마아크 신호검출부(593)를 구비한 것을 특징으로 하는 정보재생장치.
  30. 제21항에 있어서, 마아크 신호검지수단(593)이 검출한 기준마아크 검지신호와 제2저반사부검지부(586)가 검출한 기준 제2반사부검지신호와의 시간간격을 시간보정부(607)가 측정하여 기준보정시간을 구하고, 특정의 마아크신호검지신호와 제2반사부검지신호와의 시간간격을 상기 시간보정부(607)가 기준보정시간에 의하여 보정함에 따라, 제2반사부 검지신호의 위치를 검출하는 제2저반사부위치검지수단(596)을 구비한 것을 특징으로 하는 정보재생장치.
  31. 제19항에 있어서, 제1저반사부에서 트랙방향의 길이가 긴 제2저반사부만을 검출하는 제2저반사부검지수단(586)을 구비한 것을 특징으로 하는 정보재생장치.
  32. 제19항에 있어서, 제2저반사부검지수단(586)에 의하여 제2저반사부를 검지한 제1검지신호와. 회전수단의 각도검지수단(355)의 제2검지신호에 의하여 제2저반사부가 기록매체상에 배치되어 있는 각도위치를 검출함에 따라 제2물리특징정보를 얻는 제2물리특징정보검지수단을 구비한 것을 특징으로 하는 정보재생장치.
  33. 잴19항에 있어서, 제2저반사부검지수단(586)에 의하여 검출된 제2저반사부검지신호와 광재생수단(590)으로 검지된 제1광재생신호의 클록신호 또한/또는 프레임동기신호에 기초하여 제2저반사부의 개시위치와 종료 위치를 측정함에 따라, 제2물리특징정보를 얻는 제2물리특징정보검지수단을 구비한 것을 특징으로 하는 정보재생장치.
  34. 제1항에 있어서, 물리특징정보검지수단으로서 오차신호검지수단(633)을 이용하고, 특정한 어드레스에 있는 특정한 기록신호의 오차신호(632)의 유무를 검지함에 따라 제2물리특징정보를 검출하는 제2물리특징검지수단(635)을 구비한 것을 특징으로 하는 정보재생장치.
  35. 제34항에 있어서, 제1물리특징정보에 나타낸 특정의 기록신호의 오차신호의 수가 소정의 수(535b)를 초과하지 않을 경우, 정지명령을 나타내는 대조수단(535)을 구비한 것을 특징으로 하는 정보재생장치.
  36. 제1항에 있어서, 물리특징정보검지수단으로서 특수부호검지수단(640)을 사용하여 특정의 기록신호영역에, 부호해독수단에 있어서의 정규의 제1부호해독표에는 없는 특수부호(639)가 존재함을 검출함에 따라 제2물리특징정보를 얻는 제2물리특징정보검출수단을 구비한 것을 특징으로 하는 정보재생장치.
  37. 제36항에 있어서, 제1물리특징정보에 나타낸 특정의 기록신호영역에, 특수부호(639)가 존재하지 않을 경우, 정지명령을 출력하는 대조수단(535)을 구비한 것을 특징으로 하는 정보재생장치.
  38. 제1항에 있어서, 기록매체의 제1물리특징정보에 나타낸 특정영역의 인접하는 2가지 이상의 트랙의 피트 배열을 검지하는 피트배열검지수단(747)을 제2물리특징검지수단의 속에 구비한 것을 특징으로 하는 정보재생장치.
  39. 제38항에 있어서, 2가지 트랙의 피트배열이 동상 또는 역상인 영역을 검출하는 피트배열검지수단(747)을 구비한 것을 특징으로 하는 정보재생장치.
  40. 제39항에 있어서, 기록신호의 최장피트길이의 피트가 동상으로 배열되어 있는 동상피트영역의 위치정보를 검출함에 따라 제2물리특징정보를 얻는 피트배열검지수단(747)을 구비한 것을 특징으로 하는 정보재생장치.
  41. 제40항에 있어서, 어드레스정보와 재생클록신호를 이용하여 동상피트영역의 위치를 검출하여, 제2물리특징정보(734)의 일부를 얻는 동상/역상신호위치검출수단(748)을 구비한 것을 특징으로 하는 정보재생장치.
  42. 제39항에 있어서, 동상/역상신호검지수단(747)의 검지신호로 부터, 특정의 피트길이에 대응하는 특정동상신호(654a)를 검지하는 특정동상신호검지부(749)를 구비한 것을 특징으로 하는 정보재생장치.
  43. 제42항에 있어서, 특정동상신호로서 프레임동기신호의 동상신호(654a)를 검출하는 특정동상신호검지부(749)를 구비한 것을 특징으로 하는 정보재생장치.
  44. 제35항에 있어서, 인접하는 3개 이상의 트랙의 동상의 피트배열에 대응한 동상신호(654a,654b)를 검출하는 동상/역상신호검지수단(747)을 구비한 것을 특징으로 하는 정보재생장치.
  45. 제44항에 있어서, 동상신호로서 최장피트길이의 피트가 인접하는 3가지 트랙에 동상으로 배치되어 있는 특정 동상신호(654a,654b)을 검지하는 동상/역상검지수단(747)을 구비한 것을 특징으로 하는 정보재생장치.
  46. 제45항에 있어서, 특정 동상신호로서 프레임동기신호의 동상신호(654a)를 검출하는 특정 동상신호검지부(745)를 구비한 것을 특징으로 하는 정보재생장치.
  47. 제39항에 있어서, 트래킹수단(24)에 설치한 오프트래킹수단(646)에 의하여, 2개의 트랙사이를 트래킹시키는 오프트래킹수단에 의하여, 2개의 트랙의 피트의 동상신호 또는 역상신호를 재생함에 따라, 양쪽 2개의 트랙의 피트배열의 동상영역 또는 역상영역을 검지하여 제2물리특징정보를 얻는 동상/역상신호검출수단(747)을 구비한 것을 특징으로 하는 정보재생장치.
  48. 제47항에 있어서, 제어수단(10)으로부터의 오프트랙절환신호에 의하여, 오프트래킹 제어수단(646)에 의하여 관비임이 하나의 트랙위를 주행하는 상태에서 2개의 트랙의 중간부를 주행하는 상태에서 절환하고, 상기의 2개의 트랙의 동상신호 또한 역상신호를 재생하여 동상신호 또한 역상신호를 검출하는 동상/역상신호검지수단(747)을 구비한 것을 특징으로 하는 정보재생장치.
  49. 제48항에 있어서, 트래킹수단의 트래킹서어보의 극성을 오프트래킹절환신호에 의하여 반전시켜, 온트랙 상태에서 2개의 트랙중간부를 광비임이 주행하는 오프트랙상태로 절환하는 오프트래킹 제어수단(24a,646)을 구비한 것을 특징으로 하는 정보재생장치.
  50. 제38항에 있어서, 인접하는 2개의 트랙의 피트배열이 동상인 영역을 검출하는 피트배열검지수단을 구비한 것을 특징으로 하는 정보재생장치.
  51. 제1항에 있어서, 피트의 존재에 의하여 반사광량이 적은 (740)과 비피트부에 의한 제1반사부보다 반사율이 큰 고반사부(741)를 재생수단에 의하여 검출함에 따라, 제1광기록신호를 재생하는 장치에 있어서, 광기록신호영역(742)중에 설치되고, 또한 제1저반사부보다 반사율이 낮은 제2저반사광량의 제2저반사부를 검출하는 제2저반사부검지수단(586)의 제2저반사부 검지신호를 제1디지털신호로 복조하는 북조수단(621)을 구비한 것을 특징으로 하는 정보재생장치.
  52. 제51항에 있어서, 2치 이상의 슬라이스레벨을 지닌 레벨슬라이서를 사용하여 제1광기록신호를 제2레벨슬라이서(386)에 있어서 제1레벨에서 슬라이스함에 따라 제1광재생신호로 부터 제1디지털신호를 얻음과 동시 에, 제2레벨슬라이서(586)에 있어서 제1슬라이스레벨보다 낮은 광량치의 재생신호에 대응하는 제2슬라이스레벨에서 재생신호를 슬라이스함에 따라, 제2저반사부를 검출하는 제2저반사부검출수단(586)을 구비한 것을 특징으로 하는 정보재생장치.
  53. 제52항에 있어서, 제2저반사부검출수단(586)의 제2저반사부검지신호와, 재생수단(590)에 의하여 검지된 제1광재생신호의 정보에 기초하여, 제2저반사부의 원주방향의 길이를 검출하는 제2저반사부 펄스폭검출수단(621e) 또한/그렇지 않으면 원주방향의 간격을 검출하는 제2저반사부간격검출수단(621b) 검출신호에 기초하여 제1디지털신호를 복조하는 복조수단(621)을 구비한 것을 특징으로 하는 정보재생장치.
  54. 제53항에 있어서, 재생클록신호를 계수기(598c)로 계수한 카운트수에 의하여, 제2저반사부의 검출신호의 펄스폭을 검출하는 제2저반사부 펄스폭검출수단(621e) 또한/그렇지 않으면 상기 제2저반사부검출신호의 신호간격을 검출하는 제2저반사부 펄스간격검출수단(621b)을 구비한 것을 특징으로 하는 정보재생장치.
  55. 제51항에 있어서, 제1디지털신호 중에서 제1암호를 얻어서, 상기 제1암호를 암호해독함에 따라, 적어도 제1물리특징정보를 얻는 암호해독수단(534)을 구비한 것을 특징으로 하는 정보재생장치.
  56. 제55항에 있어서, 제1암호를 암호해독하여 적어도 제1물리특징정보와 ID번호(750)를 평문화하는 암호해독수단(534)을 구비한 것을 특징으로 하는 정보재생장치.
  57. 제55항에 있어서, 제1디지털 중에서, 평문의 ID번호를 얻어서 출력하는 ID출력부(750)를 구비한 것을 특징으로 하는 정보재생장치.
  58. 제55항에 있어서, 제1디지털신호로 부터 평문 또는 암호의 ID번호를 출력함과 동시에 ID번호와, 수학적으로 독립하여 일방향 함수로 통신을 하는 경우의 제 1비밀키이를 출력하는 복조수단(621)을 구비하여, 외부컴퓨터(633)에 통신부(664)를 개재하여 적어도 상기 비밀정보를 제1비밀키이를 사용하여 RSA함수 등의 공개키이암호로 암호화하여, ID번호와 함께 외부컴퓨터에 송신하는 연산부(10)를 구비한 것을 특징으로 하는 정보재생장치.
  59. 제1항에 있어서, 공개키이암호계함수로 암호화된 제1암호를 평문화하고 제1물리특징정보를 포함하는 평문을 얻는 암호해독수단(534)을 구비한 것을 특징으로 하는 정보재생장치.
  60. 제59항에 있어서, 암호화 수단에 있어서 비밀 키이로서 d≥256비트의 정부(d)를 이용하여, 암호화된 제1암호를 해독키이로서 n≥256비트의 정부(n)를 공개키이로서 이용하여 상기 암호를 평문화하는 암호해독수단을 구비한 것을 특징으로 하는 정보재생장치.
  61. 제60항에 있어서, 공개암호함수로서 RSA함수를 이용한 암호해독수단을 구비한 것을 특징으로 하는 정보재생장치.
  62. 제61항에 있어서, C를 암호, M을 평문, 겅수 n≥256비트를 공개키이로 하고, 256비트이상의 정수를 비밀키이(d)로 하였을 경우, C=Mdmod n의 계산식에 의하여 암호화수단에 의하여 암호화된 제1암호(C)를 3이상의 공개된 e로 되는 정수와, 공개키이(n)를 사용하여, M=Cemod n의 연산으로 평문(M)을 해독하고, 제1물리특징정보를 얻는 암호해독수단을 구비한 것을 특징으로 하는 정보재생장치.
  63. 제60항에 있어서, 공개키이암호함수로서 타원함수를 이용한 암호해독수단을 구비한 것을 특징으로 하는 정보재생장치.
  64. 제59항에 있어서, 기록매체에 기록된 암호해독수단의 평문화함수를 재생하여 재생한 암호를 평문화함수로 평문화하는 암호해독수단을 구비한 것을 특징으로 하는 정보재생장치.
  65. 제59항에 있어서, 장치의 불휘발성(RAM) 또는 ROM의 메모리부에 기억된 암호해독함수를 사용하여 기록매체로 부터 재생한 암호를, 암호평문화수단에서 평문화하고, 제1물리특징정보를 얻는 암호해독수단을 구 비한 것을 특징으로 하는 정보재생장치.
  66. 제65항에 있어서, 기록재생장치의 메모리부에 여러개의 평문화함수로 된 평문화함수집단이 기어되어 있으며, 재생한 암호를 평문화함수집단중에서 특정한 여러개의 함수로 평문화하여, 여러개의 평문집단을 얻어서, 평문집단이 모두 청상으로 평문화되었을 경우를 제외하고 정지명령을 출력 하는 것을 특징으로 하는 정보재생장치.
  67. 제32항에 있어서, 기록재생장치에 접속된 정보처리장치중의 메모리부에 기억된 평문화함수를 사용하여 기록매체로 부터 재생한 암호를 평문화하여 제1물리특징정보를 얻는 것을 특징으로 하는 정보재생장치.
  68. 제40항에 있어서, OS에 기억된 암호해독함수로 제1암호를 평문화하는 암호해독수단을 구비한 것을 특징으로 하는 정보재생장치.
  69. 제32항에 있어서, 일방향성 함수로서 RSA함수를 이용한 것을 특징으로 하는 정보재생장치.
  70. 원반형 광기록매체의 적어도 피트의 2차원배치 또는 피트의 형상을 포함하는 물리적 특징을 나타내는 제1물리특징정보(532)를 일방향성 함수를 이용하여 암호화하는 암호화수단(537)과, 암호화된 제1물리특징정보를 광기록매체에 기록되어야할 주정보와 식별할 수 있는 형태에서, 광기록매체에 또는 그 원반에 기록하는 기록수단(37,6,23,24,17,26,10) 등을 구비한 것을 특징으로 하는 정보기록장치.
  71. 제70항에 있어서, 암호화수단이 일방향성 함수로서 공개 키이 암호계함수를 이용하도록 구성되어 있음을 특징으로 하는 정보재생장치.
  72. 제71항에 있어서, 공개키이암호계함수로서 RSA함수를 이용하도록 구성되어 있음을 특징으로 하는 정보재생장치.
  73. 제71항에 있어서, 공개키이암호계함수로서 타원곡선함수를 이용하도록 구성되어 있음을 특징으로 하는 정보재생장치.
  74. 원반형 광기록매체의 적어도 피트의 2차원배치 또는 피트의 형상을 포함한 물리적 특징을 나타내는 제1물리특징정보(532)를 인식하는 스텝과, 제1물리특징정보를 일방향성 함수를 이용하여 암호화하는 스텝과, 암호화된 제1물리특징정보를 광기록매체에 기록하여야할 주정보와 식별가능한 형태로, 광기록매체 또는 그 원반에 기록하는 스텝 등을 구비한 것을 특징으로 하는 원반형 광기록매체의 제조방법.
  75. 제74항에 있어서, 암호화하는 스텝이 일방향성 함수로서 공개키이암호계 함수를 이용하는 것임을 특징으로 하는 원반형 광기록매체의 제조방법.
  76. 원반형 광기록매체의 적어도 피트의 2차원배치 또는 피트의 형상을 포함하는 물리적 특징을 나타내는 제1물리특징정보(532)가 인식되어, 제1물리특징정보가 일방향성 함수를 이용하여 암호화되었으며, 암호화된 제1물리특징정보를 광기록매체에 기록하여야할 주정보와 식별할 수 있는 형태로, 광기록매체 또는 그 원반에 기록하는 과정을 거쳐 제조된 것을 특징으로 하는 원반형 광기록매체.
  77. 제75항에 있어서, 일방향성 함수로서, 공개키이암호계함수를 이용하는 것임을 특징으로 하는 원반형 광기록매체.
  78. 제77항에 있어서, 공개키이암호계함수로서 RSA함수를 이용하는 것임을 특징으로 하는 원반형 광기록매체.
  79. 제77항에 있어서, 공개키이암호계함수로서 타원함수를 이용하는 것임을 특징으로 하는 원반형 광기록매체.
  80. 제77항에 있어서, 제1물리특징정보로서, 원반형 광기록매체의 피트가 배치되어 있는 원주방향의 각도의 위치정보를 포함하는 물리적 특징을 이용하는 것임을 특징으로 하는 광기록매체.
  81. 제77항에 있어서 제1물리특징정보로서 원반형 광기록매체의 피트가 배치되어 있는 트랙의 트래킹방향의 변위량정보를 포함한 물리적 특징을 이용하는 것임을 특징으로 하는 광기록매체.
  82. 제77항에 있어서, 제1물리특징정보로서 원반형 광기록매체의 피트깊이의 변위량정보를 포함한 물리적 특징을 이용하는 것임을 특징으로 하는 광기록매체.
  83. 제77항에 있어서, 제1물리특징정보로서 원반형광기록매체의 피트의 존재에 의하여 고반사율부와 저반사율부를 지닌 기록영역중에 있고, 또한 저반사부보다 낮은 반사율을 지닌 제2저반사부의 배치정보를 포함한 물리적 특징을 이용한 것임을 특징으로 하는 광기록매체.
  84. 제77항에 있어서, 제1물리특징정보로서 원반형 광기록매체의 인접하는 트랙의 피트배열이 같은 배열인 영역의 배치정보를 포함한 물리적 특징을 이용하는 것임을 특징으로 하는 광기록매체.
  85. 제77항에 있어서, 제1물리특징정보로서 원반형 광기록매체의 특정한 오류신호를 포함한 신호가 기록된 피트집단의 배치정보률 포함한 물리적 특징을 이용하는 것임을 특징으로 하는 광기록매체.
  86. 제77항에 있어서, 제1물리특징정보로서 원반형 광기록매체의 특정한 부호의 변조신호를 포함한 신호가 기록된 피트집단의 배치정보를 포함한 물리적 특징을 이용하는 것임을 특징으로 하는 광기록매체.
  87. 원반형 광기록매체의 적어도 피트의 2차원 배치 또는 피트형상을 포함한 물리적 특징을 나타내는 것으로서, 광기록매체의 제조시에 일방향성 함수를 이용하여 암호화되어 기록된 제1물리특징정보(532)를 광기록매체로 부터 판독된 정보에서 검출하는 스텝과, 제1물리특징정보를 해독하는 암호해독스텝과, 광기록매체의 물리적 특징을 특정하여 제2물리특징정보를 얻는 스텝과, 제2물리특징정보를 제1물리특징정보와 대조하여 양자사이에 특정한 관계가 있는지 없는지를 판단하는 대조스텝과, 대조스텝에서 제2물리특징정보가 제1물리특징정보에 대하여 특정한 관계에 있지 않을때는, 광기록 매체로 부터 판독된 특정의 프로그램의 동작을 정지하던가, 광기록매체로 부터 그다음 정보의 판독을 정지하던가, 광기록매체로 부터 판독되는 정보의 신호처리에 의한 소정의 처리를 정지하는 스텝 등을 구비한 원반형 광기록매체의 불법복사 또는 원반형 광기록매체정보를 특징으로 하는 불법설치 방지방법.
  88. 원반형 광기록매체의 적어도 피트의 2차원배치 또는 피트형상을 포함하는 물리적 특징을 나타내는 제1물리특징정보(532)를 인식하여 제1물리특징정보를 광기록매체에 기록하여야할 주정보와 식별할 수 있는 형태에서, 광기록매체 또는 그 원반에 기록함에 따라 제조된 광기록매체로 부터 제1물리특징정보(532)를 검출하는 스텝과 제1물리특징정보를 해독하는 암호해독스텝과, 광기록매체의 물리적 특징을 측정하여 제2물리특징정보를 얻는 스텝과, 제2물리특징정보를 제1물리특징정보와 대조하여 양자사이에 특정한 관계가 있는지 없는지를 판단하는 대조스텝과, 대조스텝에서 제2물리특징정보가 판독된 특정의 프로그램의 동작을 정지하던가, 광기록매체에서 그다음 정보의 판독을 정지하던가, 광기록매체로 부터 판독된 정보의 신호처리수단에 의한 소정의 처리를 정지하는 스텝 등을 구비한 광기록매체의 불법복사 또는 광기록 매체의 정보를 특징으로 하는 불법설치 방지방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950705769A 1994-04-18 1995-04-18 광기록매체정보의불법복사또는불법설치방지방법및장치 KR100381116B1 (ko)

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KR100608337B1 (ko) * 1999-03-09 2006-08-02 소니 가부시끼 가이샤 재생장치 및 정보분배시스템
KR100712377B1 (ko) * 1999-03-26 2007-05-02 소니 가부시끼 가이샤 재생 장치 및 재생 방법

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CN1127049A (zh) 1996-07-17
EP1708189A2 (en) 2006-10-04
EP0706174B1 (en) 2003-01-02
EP1271511A3 (en) 2006-10-11
KR100381116B1 (ko) 2003-07-22
CN1126078C (zh) 2003-10-29
CN1280815C (zh) 2006-10-18
CN1492423A (zh) 2004-04-28
EP1708188A3 (en) 2007-11-07
EP1271511A2 (en) 2003-01-02
CN1342979A (zh) 2002-04-03
CN1294589C (zh) 2007-01-10
KR100381119B1 (ko) 2003-04-21
KR100381118B1 (ko) 2003-04-21
EP1708189A3 (en) 2007-11-14
DE69529257T2 (de) 2003-11-13
EP0706174A4 (en) 1997-07-02
WO1995028704A1 (fr) 1995-10-26
EP1708188A2 (en) 2006-10-04
EP0706174A1 (en) 1996-04-10
DE69529257D1 (de) 2003-02-06

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