AU544307B2 - Varification of recorded messages - Google Patents

Varification of recorded messages

Info

Publication number
AU544307B2
AU544307B2 AU84246/82A AU8424682A AU544307B2 AU 544307 B2 AU544307 B2 AU 544307B2 AU 84246/82 A AU84246/82 A AU 84246/82A AU 8424682 A AU8424682 A AU 8424682A AU 544307 B2 AU544307 B2 AU 544307B2
Authority
AU
Australia
Prior art keywords
varification
recorded messages
messages
recorded
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.)
Ceased
Application number
AU84246/82A
Other versions
AU8424682A (en
Inventor
Ian Cunningham Mcwhirter
Richard Bernard Morgan
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.)
McWhirter Holdings Pty Ltd
Original Assignee
McWhirter Holdings Pty Ltd
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 McWhirter Holdings Pty Ltd filed Critical McWhirter Holdings Pty Ltd
Priority to AU84246/82A priority Critical patent/AU544307B2/en
Publication of AU8424682A publication Critical patent/AU8424682A/en
Application granted granted Critical
Publication of AU544307B2 publication Critical patent/AU544307B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
    • G11B20/00123—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers the record carrier being identified by recognising some of its unique characteristics, e.g. a unique defect pattern serving as a physical signature of the record carrier
    • 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
    • G11B20/02—Analogue recording or reproducing
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers
AU84246/82A 1981-05-27 1981-07-10 Varification of recorded messages Ceased AU544307B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU84246/82A AU544307B2 (en) 1981-05-27 1981-07-10 Varification of recorded messages

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
AUPE9043 1981-05-27
AUPE904381 1981-05-27
AUPE9699 1981-07-10
AUPE969981 1981-07-10
AU84246/82A AU544307B2 (en) 1981-05-27 1981-07-10 Varification of recorded messages
AUPF030981 1981-08-18
AUPE0309 1981-08-18

Publications (2)

Publication Number Publication Date
AU8424682A AU8424682A (en) 1982-12-02
AU544307B2 true AU544307B2 (en) 1985-05-23

Family

ID=27423968

Family Applications (1)

Application Number Title Priority Date Filing Date
AU84246/82A Ceased AU544307B2 (en) 1981-05-27 1981-07-10 Varification of recorded messages

Country Status (1)

Country Link
AU (1) AU544307B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU573358B2 (en) * 1984-07-16 1988-06-02 Mcwhirter Holdings Pty. Ltd. Recorded information verification system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4717973A (en) * 1984-07-16 1988-01-05 Mcwhirter Holdings Pty. Limited Recorded information verification system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU573358B2 (en) * 1984-07-16 1988-06-02 Mcwhirter Holdings Pty. Ltd. Recorded information verification system

Also Published As

Publication number Publication date
AU8424682A (en) 1982-12-02

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