HK1013723A1 - Identification process of optically readable disk-shaped information carriers - Google Patents

Identification process of optically readable disk-shaped information carriers

Info

Publication number
HK1013723A1
HK1013723A1 HK98114977A HK98114977A HK1013723A1 HK 1013723 A1 HK1013723 A1 HK 1013723A1 HK 98114977 A HK98114977 A HK 98114977A HK 98114977 A HK98114977 A HK 98114977A HK 1013723 A1 HK1013723 A1 HK 1013723A1
Authority
HK
Hong Kong
Prior art keywords
optically readable
information carriers
shaped information
identification process
readable disk
Prior art date
Application number
HK98114977A
Inventor
Detlef Ermacora
Original Assignee
Warner Music Mfg Europ Gmbh
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
Application filed by Warner Music Mfg Europ Gmbh filed Critical Warner Music Mfg Europ Gmbh
Publication of HK1013723A1 publication Critical patent/HK1013723A1/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • G11B23/283—Security features, e.g. digital codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Holo Graphy (AREA)

Abstract

A process is disclosed for identifying high-density, optically readable, disk-shaped information carriers for audio and video signals, such as CD's. Each CD is provided with an individual code by a controlled laser beam. The same code is preferably applied on the CD package as well. This may be done practically at the same time and in the same installation. The code may be a continuous series of numbers, as is usual with bank notes.
HK98114977A 1994-02-02 1998-12-23 Identification process of optically readable disk-shaped information carriers HK1013723A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4403171A DE4403171A1 (en) 1994-02-02 1994-02-02 Process for the identification of optically readable plate-shaped information carriers
PCT/EP1995/000366 WO1995021446A1 (en) 1994-02-02 1995-02-01 Identification process of optically readable disk-shaped information carriers

Publications (1)

Publication Number Publication Date
HK1013723A1 true HK1013723A1 (en) 1999-09-03

Family

ID=6509294

Family Applications (1)

Application Number Title Priority Date Filing Date
HK98114977A HK1013723A1 (en) 1994-02-02 1998-12-23 Identification process of optically readable disk-shaped information carriers

Country Status (7)

Country Link
EP (1) EP0742942B1 (en)
AT (1) ATE167949T1 (en)
AU (1) AU1696195A (en)
DE (2) DE4403171A1 (en)
DK (1) DK0742942T3 (en)
HK (1) HK1013723A1 (en)
WO (1) WO1995021446A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3707812B2 (en) * 1994-09-27 2005-10-19 ソニー株式会社 Optical recording method, optical recording apparatus, and optical recording medium
US5822291A (en) * 1995-03-23 1998-10-13 Zoom Television, Inc. Mass storage element and drive unit therefor
JP2001291244A (en) 2000-04-04 2001-10-19 Sharp Corp Optical recording medium, method and device for reproducing optical recording information
EP1184859A1 (en) * 2000-08-17 2002-03-06 Euro Digital Disc Productions GmbH Method of shape formation and/or surface patterning

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4677604A (en) * 1985-02-04 1987-06-30 Selsys Corporation Method for controlling access to recorded data
GB2173767A (en) * 1985-04-03 1986-10-22 Andrew James Smith Security markings
DE3810276A1 (en) * 1988-03-25 1989-10-05 Peter Bodinet Method of identifying EDP programs which have been duplicated without authorisation
DE4311683C2 (en) * 1993-04-08 1996-05-02 Sonopress Prod Disc-shaped optical memory and method for its production
DE4321799C1 (en) * 1993-06-30 1994-11-17 Nils Diezmann Procedures to prevent the use of illegally reproduced programs

Also Published As

Publication number Publication date
ATE167949T1 (en) 1998-07-15
DE59502682D1 (en) 1998-08-06
AU1696195A (en) 1995-08-21
WO1995021446A1 (en) 1995-08-10
EP0742942A1 (en) 1996-11-20
DK0742942T3 (en) 1999-04-12
EP0742942B1 (en) 1998-07-01
DE4403171A1 (en) 1995-08-03

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20040201

PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)