CA2211590A1 - Read/write protect scheme for a disk cartridge and drive - Google Patents

Read/write protect scheme for a disk cartridge and drive

Info

Publication number
CA2211590A1
CA2211590A1 CA2211590A CA2211590A CA2211590A1 CA 2211590 A1 CA2211590 A1 CA 2211590A1 CA 2211590 A CA2211590 A CA 2211590A CA 2211590 A CA2211590 A CA 2211590A CA 2211590 A1 CA2211590 A1 CA 2211590A1
Authority
CA
Canada
Prior art keywords
storage medium
protection mode
writing
code
read
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.)
Granted
Application number
CA2211590A
Other languages
French (fr)
Other versions
CA2211590C (en
Inventor
David A. Thompson
Gregory M. Allen
Clark C. Bruderer
David G. Braithwaite
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iomega Corp
Original Assignee
David A. Thompson
Iomega Corporation
Gregory M. Allen
Clark C. Bruderer
David G. Braithwaite
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23592335&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2211590(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by David A. Thompson, Iomega Corporation, Gregory M. Allen, Clark C. Bruderer, David G. Braithwaite filed Critical David A. Thompson
Publication of CA2211590A1 publication Critical patent/CA2211590A1/en
Application granted granted Critical
Publication of CA2211590C publication Critical patent/CA2211590C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00137—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to contents recorded on or reproduced from a record carrier to authorised users
    • G11B20/00152—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to contents recorded on or reproduced from a record carrier to authorised users involving a password
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
    • G11B20/00695—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that data are read from the recording medium
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
    • G11B20/00702—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that data are recorded on the recording medium
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
    • G11B20/00753—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
    • G11B20/00768—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
    • 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
    • G11B23/288—Protecting disks from being written or overwritten

Abstract

A method of inhibiting inadvertent and unauthorized writing and reading of information to and from a storage medium comprises the steps of (a) writing a first code in a predetermined location on the storage medium, the first code being indicative of a first protection mode of the storage medium (112); (b) receiving a command to change the protection mode of the storage medium from the first protection mode to a second protection mode (118); and, in response to the command, (c) writing in the predetermined location on the storage medium, in place of the first code, a second code indicative of the second protection mode (136, 138). A protection mode can inhibit writing to the storage medium, both writing and reading to and from the medium, or neither.
Changing of protection modes can also be password protected.
CA002211590A 1995-03-10 1996-03-01 Read/write protect scheme for a disk cartridge and drive Expired - Fee Related CA2211590C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/402,540 US5644444A (en) 1995-03-10 1995-03-10 Read/write protect scheme for a disk cartridge and drive
US08/402,540 1995-03-10
PCT/US1996/002766 WO1996028820A1 (en) 1995-03-10 1996-03-01 Read/write protect scheme for a disk cartridge and drive

Publications (2)

Publication Number Publication Date
CA2211590A1 true CA2211590A1 (en) 1996-09-19
CA2211590C CA2211590C (en) 2000-10-31

Family

ID=23592335

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002211590A Expired - Fee Related CA2211590C (en) 1995-03-10 1996-03-01 Read/write protect scheme for a disk cartridge and drive

Country Status (6)

Country Link
US (3) US5644444A (en)
EP (2) EP1132910A3 (en)
JP (1) JPH10504420A (en)
CA (1) CA2211590C (en)
DE (2) DE789908T1 (en)
WO (1) WO1996028820A1 (en)

Families Citing this family (91)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY121551A (en) 1994-12-22 2006-02-28 Sony Corp Recording and reproducing system for protecting copyrighted data
US6490113B2 (en) 1994-12-22 2002-12-03 Sony Corporation Recording medium and apparatus for protecting copyrighted digital data
US5644444A (en) * 1995-03-10 1997-07-01 Iomega Corporation Read/write protect scheme for a disk cartridge and drive
US6724554B1 (en) 1995-03-10 2004-04-20 Iomega Corporation Read/write protect scheme for a disk cartridge and drive
MY112755A (en) * 1995-06-06 2001-08-30 Sony Corp Information data reproducing system, reproducing apparatus, reproducing method, data forming apparatus and data record medium
JPH0964770A (en) * 1995-08-18 1997-03-07 Matsushita Electric Ind Co Ltd Tuner integrally receiving ground broadcasting and satellite broadcasting
US6430363B2 (en) * 1995-09-11 2002-08-06 Matsushita Electric Industrial Co., Ltd. Video signal recording and reproducing apparatus
JPH1049986A (en) * 1996-08-05 1998-02-20 Sony Corp Recording medium, recorder or reproducer or reproducing method
US6747930B1 (en) 1996-12-24 2004-06-08 Hide & Seek Technologies, Inc. Data protection on an optical disk
BE1011053A3 (en) * 1997-03-21 1999-04-06 Wang Wei Dong Security process for access control to the disk of a double sided quadruple density diskette
US6072666A (en) 1997-05-30 2000-06-06 Iomega Corporation Head retraction system for retracting the heads of a disk drive
JP3045410U (en) * 1997-07-17 1998-02-03 船井テクノシステム株式会社 Disk drive device
JPH11161552A (en) * 1997-11-28 1999-06-18 Fujitsu Ltd Data protecting method for reloadable storage medium and storage device applied therewith
JP3454700B2 (en) * 1998-01-20 2003-10-06 富士通株式会社 Information storage device and control method thereof
EP1211681B1 (en) * 1998-01-20 2007-02-14 Fujitsu Limited Data storage device and control method therefor
US6765853B1 (en) 1998-06-15 2004-07-20 Samsung Electronics Co., Ltd. Recording medium for storing write protection information and write protection method thereof
KR100601598B1 (en) 1998-06-15 2006-07-14 삼성전자주식회사 Recording medium storing write protection information and write protecting method
EP1306841A3 (en) 1998-06-15 2007-05-23 Samsung Electronics Co., Ltd. Recording medium for storing write protection information and write protection method thereof
US6259575B1 (en) * 1998-07-01 2001-07-10 Iomega Corporation Readable indelible mark on storage media
US9361243B2 (en) 1998-07-31 2016-06-07 Kom Networks Inc. Method and system for providing restricted access to a storage medium
US8234477B2 (en) 1998-07-31 2012-07-31 Kom Networks, Inc. Method and system for providing restricted access to a storage medium
CA2244626A1 (en) * 1998-07-31 2000-01-31 Kom Inc. A hardware and software system
US7536524B2 (en) * 1998-07-31 2009-05-19 Kom Networks Inc. Method and system for providing restricted access to a storage medium
TR200002369T1 (en) * 1998-10-05 2001-01-22 Koninklijke Philips Electronics N.V. Process for copy protection of recorded information.
US6583945B1 (en) * 1998-10-30 2003-06-24 Iomega Corporation Method for irreversibly write-securing a magnetic storage cartridge
US6459544B1 (en) 1998-11-20 2002-10-01 Bruce M. Harper Removable cartridge for data-storage medium
JP2000222863A (en) * 1999-01-28 2000-08-11 Pioneer Electronic Corp Storage medium and recording/reproducing device
US6560192B1 (en) * 1999-03-19 2003-05-06 Terastor Corporation Method and apparatus for dampening disk vibrations
BR0010777A (en) * 1999-03-23 2002-01-15 Matsushita Electric Ind Co Ltd Multi-layered rewritable disc and information recording / playback device for that disc
JP3758886B2 (en) 1999-03-30 2006-03-22 富士通株式会社 Data processing apparatus and access control method thereof
US6330210B1 (en) * 1999-04-29 2001-12-11 Hewlett-Packard Company Data structure for control information on rewriteable data storage media
US6580683B1 (en) 1999-06-23 2003-06-17 Dataplay, Inc. Optical recording medium having a master data area and a writeable data area
US7227817B1 (en) 1999-12-07 2007-06-05 Dphi Acquisitions, Inc. Low profile optical head
US6104048A (en) * 1999-06-30 2000-08-15 Iomega Corporation Electrostatic discharge protection for magneto-resistive heads
JP2001023301A (en) 1999-07-09 2001-01-26 Fujitsu Ltd Storage device and device and method for controlling access to recording medium
JP2001023300A (en) 1999-07-09 2001-01-26 Fujitsu Ltd Storage device, control device and method for accessing to recording medium
DE19937060A1 (en) * 1999-08-05 2001-02-15 Siemens Pc Systeme Gmbh & Co K Procedure to protect computer peripheral data carrier device, CD-ROM drive, CD writer, DVD-ROM
US6631359B1 (en) 1999-09-10 2003-10-07 Dphi Acquisitions, Inc. Writeable medium access control using a medium writeable area
US7191153B1 (en) 1999-09-10 2007-03-13 Dphi Acquisitions, Inc. Content distribution method and apparatus
US7225809B1 (en) * 1999-11-01 2007-06-05 Ric Investments, Llc Method and apparatus for monitoring and controlling a medical device
US8230190B1 (en) 1999-11-22 2012-07-24 Seagate Technology Llc Storage device with built-in data security system
NL1014274C2 (en) * 2000-02-03 2001-08-16 Tele Atlas Bv System for securing data present on a data carrier.
JP2001312374A (en) * 2000-04-28 2001-11-09 Fujitsu Ltd Storage device and access control method
US6598135B1 (en) * 2000-05-03 2003-07-22 Plasmon Ide System and method for defining rewriteable data storage media as write once data storage media
US6393539B1 (en) * 2000-05-04 2002-05-21 Dell Products, L.P. System and method for reliably assigning and protecting data in a centralizes storage system
US6738879B2 (en) * 2000-05-22 2004-05-18 Seagate Technology Llc Advanced technology attachment compatible disc drive write protection scheme
US6717764B2 (en) 2000-06-02 2004-04-06 Seagate Technology Llc Method and apparatus for head fly height measurement
US20050063256A1 (en) * 2000-06-30 2005-03-24 Selinfreund Richard H. Data storage in optical discs
WO2002002301A1 (en) 2000-06-30 2002-01-10 Verification Technologies Inc. Copy-protected optical media and method of manufacture thereof
US6638593B2 (en) 2000-06-30 2003-10-28 Verification Technologies, Inc. Copy-protected optical media and method of manufacture thereof
US8635410B1 (en) * 2000-07-20 2014-01-21 Silicon Graphics International, Corp. System and method for removing data from processor caches in a distributed multi-processor computer system
JP3998405B2 (en) * 2000-07-28 2007-10-24 富士通株式会社 Access control method and storage device using the same
US7660415B2 (en) 2000-08-03 2010-02-09 Selinfreund Richard H Method and apparatus for controlling access to storage media
US7539828B2 (en) * 2000-08-08 2009-05-26 Faronics Corporation Method and system for automatically preserving persistent storage
GB2369202B (en) * 2000-08-31 2003-03-19 Sun Microsystems Inc Computer system and method of operating a computer system
JP4770012B2 (en) * 2000-10-06 2011-09-07 ソニー株式会社 Memory device
US7036020B2 (en) * 2001-07-25 2006-04-25 Antique Books, Inc Methods and systems for promoting security in a computer system employing attached storage devices
US7925894B2 (en) * 2001-07-25 2011-04-12 Seagate Technology Llc System and method for delivering versatile security, digital rights management, and privacy services
US7865440B2 (en) * 2001-10-11 2011-01-04 International Business Machines Corporation Method, system, and program for securely providing keys to encode and decode data in a storage cartridge
US7003111B2 (en) * 2001-10-11 2006-02-21 International Business Machines Corporation Method, system, and program, for encoding and decoding input data
US6904495B2 (en) * 2002-01-10 2005-06-07 Hewlett-Packard Development Company, L.P. Method for identifying the write protect status of a diskette
US6739515B1 (en) 2002-05-09 2004-05-25 Sandisk Corporation Low-cost write protect tab for a non-volatile memory device
AU2003228985A1 (en) * 2002-05-09 2003-11-11 Kestrel Wireless, Inc. Method and system for enabling electronic transactions via a personal device
JP2004220756A (en) * 2002-12-27 2004-08-05 Konica Minolta Holdings Inc Data recording program, information recording medium and data recording terminal, data recording system, and data recording method
WO2005001524A2 (en) * 2003-06-23 2005-01-06 Kestrel Wireless, Inc. Method and apparatus for activating optical media
JP2005063483A (en) * 2003-08-12 2005-03-10 Pioneer Electronic Corp Information recording/reproducing device, information recording/reproducing method and information recording/reproducing program
US7213118B2 (en) * 2003-09-29 2007-05-01 International Business Machines Corporation Security in an automated data storage library
US7224545B2 (en) * 2004-04-15 2007-05-29 Quantum Corporation Methods and systems for overwrite protected storage media
US20060002246A1 (en) * 2004-06-30 2006-01-05 International Business Machines Corporation Sector-based worm implementation on random access memory
EP1810440A2 (en) * 2004-10-26 2007-07-25 Kestrel Wireless, Inc. Method, system, and network for selectively controlling the utility a target
US20070194945A1 (en) * 2004-12-07 2007-08-23 Paul Atkinson Mobile Device for Selectively Activating a Target and Method of Using Same
US20060123055A1 (en) * 2004-12-07 2006-06-08 Paul Atkinson Device and method for selectively controlling the utility of a target
US20060192653A1 (en) * 2005-02-18 2006-08-31 Paul Atkinson Device and method for selectively controlling the utility of an integrated circuit device
CN102157177A (en) * 2005-06-30 2011-08-17 皇家飞利浦电子股份有限公司 Small cartridge free optical disc with high level of redundancy and tolerance for missing data
US7273181B2 (en) * 2005-07-06 2007-09-25 Kestrel Wireless, Inc. Device and method for authenticating and securing transactions using RF communication
US20070008169A1 (en) * 2005-07-11 2007-01-11 Conero Ronald S A Radio Frequency Activated Integrated Circuit and Method of Disabling the Same
US20070013603A1 (en) * 2005-07-13 2007-01-18 Paul Atkinson Antenna devices and processes for improved rf communication with target devices
US20070143774A1 (en) * 2005-07-29 2007-06-21 Anoop Agrawal Structures and processes for controlling access to optical media
WO2007047841A2 (en) * 2005-10-18 2007-04-26 Kestrel Wireless Inc. Activation confirmation feedback circuits and methods
US7685389B2 (en) * 2005-10-21 2010-03-23 International Business Machines Corporation Apparatus, system, and method for setting protection states of protected partitions in storage media
WO2007085016A2 (en) * 2006-01-20 2007-07-26 Kestrel Wireless Inc. Optical media with reduced areal-sized optical shutters
US8429724B2 (en) 2006-04-25 2013-04-23 Seagate Technology Llc Versatile access control system
US8028166B2 (en) * 2006-04-25 2011-09-27 Seagate Technology Llc Versatile secure and non-secure messaging
US7539890B2 (en) * 2006-04-25 2009-05-26 Seagate Technology Llc Hybrid computer security clock
US20080046114A1 (en) * 2006-08-15 2008-02-21 White Charles A System, packaging, and method for distributing products
US20080046997A1 (en) * 2006-08-21 2008-02-21 Guardtec Industries, Llc Data safe box enforced by a storage device controller on a per-region basis for improved computer security
US20080127348A1 (en) * 2006-08-31 2008-05-29 Kenneth Largman Network computer system and method using thin user client and virtual machine to provide immunity to hacking, viruses and spy ware
US8085501B2 (en) 2008-01-29 2011-12-27 Imation Corp. Reader including an interposer that prevents coupling with write-protected data cartridges
US20100042782A1 (en) * 2008-08-18 2010-02-18 Amiram Grynberg Secure Portable File Storage Device
US8590060B2 (en) 2010-10-08 2013-11-19 Tandberg Data Holdings S.A.R.L. Virtual removable disk device for removable storage media
US10782893B2 (en) * 2017-02-22 2020-09-22 International Business Machines Corporation Inhibiting tracks within a volume of a storage system

Family Cites Families (84)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828327A (en) * 1973-04-30 1974-08-06 Ibm Simplified storage protection and address translation under system mode control in a data processing system
US3890601A (en) * 1974-03-11 1975-06-17 Philco Ford Corp Password operated system for preventing unauthorized or accidental computer memory alteration
DE2838063A1 (en) * 1978-08-31 1980-03-13 Siemens Ag TEXT EDITING DEVICE
JPS6343643Y2 (en) * 1980-12-16 1988-11-14
US4593353A (en) * 1981-10-26 1986-06-03 Telecommunications Associates, Inc. Software protection method and apparatus
US4458315A (en) * 1982-02-25 1984-07-03 Penta, Inc. Apparatus and method for preventing unauthorized use of computer programs
US4462076A (en) * 1982-06-04 1984-07-24 Smith Engineering Video game cartridge recognition and security system
US4785361A (en) * 1982-11-08 1988-11-15 Vault Corporation Method and apparatus for frustrating the unauthorized copying of recorded data
US4680731A (en) * 1983-03-17 1987-07-14 Romox Incorporated Reprogrammable cartridge memory with built-in identification circuitry and programming method
JPS59175064A (en) * 1983-03-23 1984-10-03 Mitsubishi Electric Corp Magnetic disk control system
US4734796A (en) * 1983-04-14 1988-03-29 Amiram Grynberg Technique for preventing unauthorized copying of information recorded on a recording medium and a protected recording medium
JPS60107155A (en) * 1983-11-16 1985-06-12 Hitachi Ltd Data protection system of storage volume
US4740890A (en) * 1983-12-22 1988-04-26 Software Concepts, Inc. Software protection system with trial period usage code and unlimited use unlocking code both recorded on program storage media
US4577289A (en) * 1983-12-30 1986-03-18 International Business Machines Corporation Hardware key-on-disk system for copy-protecting magnetic storage media
US4606016A (en) * 1984-02-08 1986-08-12 Optical Storage International Write protection and data detection using differential detector
JPS60189531A (en) * 1984-03-09 1985-09-27 Fujitsu Ltd Data protection processing system
US4748561A (en) * 1984-05-14 1988-05-31 Mark Brown Method of protecting computer software
JPS60246451A (en) * 1984-05-22 1985-12-06 Sharp Corp Information protecting device
US4823210A (en) * 1984-08-13 1989-04-18 Verbatim Corporation Copy protected disk
US4644493A (en) * 1984-09-14 1987-02-17 International Business Machines Corporation Implementing a shared higher level of privilege on personal computers for copy protection of software
DE3512785A1 (en) * 1985-04-10 1986-10-23 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Method for access protection
US4860128A (en) * 1985-04-24 1989-08-22 Nintendo Co., Ltd. Recordable data device having identification symbols formed thereon and cooperating data processing system having registering symbols
JPS61275948A (en) * 1985-05-31 1986-12-06 Casio Comput Co Ltd Data storage device
US4858036A (en) * 1986-08-04 1989-08-15 Peter Ginkel Software protection and identification system
US4980782A (en) * 1985-06-03 1990-12-25 Peter Ginkel Software protection and identification system
US4849836A (en) * 1985-06-07 1989-07-18 Software Heaven, Inc. Copy protection for computer discs
CA1270339A (en) * 1985-06-24 1990-06-12 Katsuya Nakagawa System for determining a truth of software in an information processing apparatus
US4757533A (en) * 1985-09-11 1988-07-12 Computer Security Corporation Security system for microcomputers
JPH074449B2 (en) * 1985-10-04 1995-01-25 任天堂株式会社 Cartridge for game machine and game machine using the same
JPS62260244A (en) * 1986-05-06 1987-11-12 Nintendo Co Ltd Memory cartridge
JP2771808B2 (en) * 1986-12-27 1998-07-02 ソニー株式会社 recoding media
JP3025502B2 (en) * 1987-03-16 2000-03-27 日立マクセル株式会社 Semiconductor memory device
US4866769A (en) * 1987-08-05 1989-09-12 Ibm Corporation Hardware assist for protecting PC software
US5185792A (en) * 1988-02-10 1993-02-09 Matsushita Electric Industrial Co., Ltd. Recording and reproducing apparatus with limited digital copying
US5231546A (en) * 1988-02-10 1993-07-27 Matsushita Electric Industrial Co., Ltd. Recording and reproducing apparatus with limited digital copying
JPH01208762A (en) * 1988-02-15 1989-08-22 Hitachi Ltd Read/write protect control system
US4983816A (en) * 1988-02-24 1991-01-08 Kabushiki Kaisha Toshiba Portable electronic device
JPH01296361A (en) * 1988-05-25 1989-11-29 Mitsubishi Electric Corp Memory card
JPH01309120A (en) * 1988-06-07 1989-12-13 Nec Corp Medium protection control system
JP2695855B2 (en) * 1988-08-26 1998-01-14 株式会社東芝 Portable electronic devices
US5161256A (en) * 1988-08-26 1992-11-03 Kabushiki Kaisha Toshiba Method and system for allocating file area in memory area of ic card
US5144660A (en) * 1988-08-31 1992-09-01 Rose Anthony M Securing a computer against undesired write operations to or read operations from a mass storage device
JP2504137B2 (en) * 1988-09-27 1996-06-05 日本電気株式会社 Memory write protect circuit
US4984272A (en) * 1988-11-30 1991-01-08 At&T Bell Laboratories Secure file handling in a computer operating system
JPH0292887U (en) * 1988-12-29 1990-07-24
FI99250C (en) * 1989-01-10 1997-12-29 Nintendo Co Ltd System for preventing unauthorized use of external memory
US5184830A (en) * 1989-01-10 1993-02-09 Nintendo Company Limited Compact hand-held video game system
US4942606A (en) * 1989-02-07 1990-07-17 Compaq Computer Corporation Computer with improved keyboard password functions
US4959860A (en) * 1989-02-07 1990-09-25 Compaq Computer Corporation Power-on password functions for computer system
JPH02251880A (en) * 1989-03-25 1990-10-09 Fujitsu Ltd Password security system
JP2770394B2 (en) * 1989-04-06 1998-07-02 ソニー株式会社 Disk cartridge
US5144659A (en) * 1989-04-19 1992-09-01 Richard P. Jones Computer file protection system
WO1990013864A1 (en) * 1989-04-28 1990-11-15 Christopher William Cowsley Improved security for machine-writeable data storage systems
JPH02293930A (en) * 1989-05-08 1990-12-05 Victor Co Of Japan Ltd Preventing system for stealing of recording contents of recording medium
CA2055606A1 (en) * 1989-07-10 1991-01-11 Gilbert W. Morrison Layered protection system for computer's hard disk
AR247311A1 (en) * 1989-09-21 1994-11-30 Philips Nv Record carrier, method of and information recording device for obtaining such record carriers, and information recording device comprising anti- copy means to inhibit unauthorized copying
US5233576A (en) * 1989-10-25 1993-08-03 Hewlett-Packard Company Multi-function optical disk drive and media
EP0425125B1 (en) * 1989-10-25 1996-04-17 Hewlett-Packard Company System with a multi-function optical disk and drive for it
SG46177A1 (en) * 1989-12-13 1998-02-20 Ibm Computer system security device
JP2751533B2 (en) * 1990-02-26 1998-05-18 ソニー株式会社 Recording control device
JP2560124B2 (en) * 1990-03-16 1996-12-04 株式会社セガ・エンタープライゼス Video game system and information processing device
EP0449242A3 (en) * 1990-03-28 1992-10-28 National Semiconductor Corporation Method and structure for providing computer security and virus prevention
US5033084A (en) * 1990-04-02 1991-07-16 Data I/O Corporation Method and apparatus for protection of software in an electronic system
US5027396A (en) * 1990-05-07 1991-06-25 Xerox Corporation Execution protection for floppy disks
US5012514A (en) * 1990-06-26 1991-04-30 Paul Renton Hard drive security system
US5265230A (en) * 1990-08-29 1993-11-23 Hewlett-Packard Company Method and apparatus for determining sector status in a data storage device by writing a status of read-only, writable, or obliterated in an error recovery area of each sector
US5132954A (en) * 1990-09-24 1992-07-21 International Business Machines Corporation Controls for optical disk relating to accessing and utilization of such disk
JPH04274058A (en) * 1991-02-28 1992-09-30 Olympus Optical Co Ltd Information recording and reproducing device
US5434562A (en) * 1991-09-06 1995-07-18 Reardon; David C. Method for limiting computer access to peripheral devices
US5375243A (en) * 1991-10-07 1994-12-20 Compaq Computer Corporation Hard disk password security system
US5369532A (en) * 1991-11-12 1994-11-29 Storage Technology Corporation Method and apparatus for managing data on rewritable media to define read/write operational status
JP2942837B2 (en) * 1992-01-31 1999-08-30 株式会社セガ・エンタープライゼス Security check method, game device, and information storage medium used for them
US5388156A (en) * 1992-02-26 1995-02-07 International Business Machines Corp. Personal computer system with security features and method
US5418852A (en) * 1992-03-18 1995-05-23 Fujitsu Limited Unauthorized use prevention method for optical disks, optical disk having unauthorized use prevention function, and optical disk apparatus
US5282247A (en) * 1992-11-12 1994-01-25 Maxtor Corporation Apparatus and method for providing data security in a computer system having removable memory
US5267311A (en) * 1992-12-08 1993-11-30 Bakhoum Ezzat G Intelligent diskette for software protection
CA2091501C (en) * 1993-03-11 2001-04-24 Thomas E. Elliott Hardware protection control for computer storage devices
CA2101123C (en) * 1993-07-22 1997-12-30 Kok-Wah Yeow Absolute static lock of files and directories on magnetic disk storage media in single machine personal microcomputers
US5454039A (en) * 1993-12-06 1995-09-26 International Business Machines Corporation Software-efficient pseudorandom function and the use thereof for encryption
AU1265195A (en) * 1993-12-06 1995-06-27 Telequip Corporation Secure computer memory card
US5535188A (en) * 1994-10-03 1996-07-09 International Business Machines Corporation Data security protection for information recorded on a rewritable storage medium using a write-once read-many storage medium
US5854719A (en) * 1994-10-18 1998-12-29 Iomega Corporation Methods and apparatus for detecting whether a removable cartridge disk drive is empty
US5682475A (en) * 1994-12-30 1997-10-28 International Business Machines Corporation Method and system for variable password access
US5644444A (en) * 1995-03-10 1997-07-01 Iomega Corporation Read/write protect scheme for a disk cartridge and drive

Also Published As

Publication number Publication date
EP0789908A4 (en) 1997-09-24
US5644444A (en) 1997-07-01
US5949601A (en) 1999-09-07
EP1132910A2 (en) 2001-09-12
WO1996028820A1 (en) 1996-09-19
JPH10504420A (en) 1998-04-28
CA2211590C (en) 2000-10-31
US6104561A (en) 2000-08-15
EP1132910A3 (en) 2003-01-29
DE789908T1 (en) 1998-02-19
EP0789908B1 (en) 2001-05-30
EP0789908A1 (en) 1997-08-20
DE69613096T2 (en) 2002-05-16
DE69613096D1 (en) 2001-07-05

Similar Documents

Publication Publication Date Title
CA2211590A1 (en) Read/write protect scheme for a disk cartridge and drive
HK1038983A1 (en) Write protection method of disc recording medium containing write protection information.
EA200200222A1 (en) MEDIA DATA WITH THE POSSIBILITY OF WRITING INFORMATION THAT HAS A SITE OF PROTECTED DATA
GB2338586A (en) Protection of data on media recording disks
CA2305870A1 (en) Global access system of multi-media related information
AU2094195A (en) Reading/writing information on a storage medium
EP1065665A4 (en) Information storage medium and information recording/reproducing system
CA2426311A1 (en) Recording medium for protecting copyrighted data
EP0971345A4 (en) Optical disk, method for recording and reproducing write-once information on and from optical disk, optical disk reproducing device, optical disk recording and reproducing device, device for recording write-once information on optical disk, and optical disk recording device
SG70668A1 (en) Optical recording medium having secrecy of recorded data and erase method therefor and information system recording/reading using the same
EP0696798A4 (en) Method and device for recording data, data recording medium, and method and device for reproducing data
GB2301930B (en) Information data reproducing system reproducing apparatus reproducing method data forming apparatus and data record medium
AU2001272784A1 (en) Secret information recorded medium, secret information protection method, secretinformation protective storing method, and system for reporting emergency such as theft or confinement when secret information is accessed
TW428169B (en) Optical information memory medium and display recording method using the same
WO1998008180A3 (en) Digital optical media authentication and copy protection method
MY112688A (en) Disc shaped recording medium having an ancillary information output control code and disc reproducing apparatus for reproducing the disc-shaped recording medium
EP0862180A3 (en) Recording and reproducing system
HK1022205A1 (en) Optical information recording medium and recordingand reproducing method thereof.
EP0611208A3 (en) Information storage disc and information recording and reproducing apparatus.
US6724554B1 (en) Read/write protect scheme for a disk cartridge and drive
AU5902494A (en) Write once type information recording medium, method and apparatus for formatting the same, and method and apparatus for writing data to or reading data from the same
EP1050879A3 (en) Recording and reproducing apparatus with means for encryption of information
RU95104292A (en) Device for protection against unauthorized access to information which is stored in personal computer
JPH02287970A (en) Optical recorder
AU5638099A (en) Reading primary and security data from optically readable data storage media

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed