IT8125640A0 - Verifica di messaggi registrati. - Google Patents
Verifica di messaggi registrati.Info
- Publication number
- IT8125640A0 IT8125640A0 IT8125640A IT2564081A IT8125640A0 IT 8125640 A0 IT8125640 A0 IT 8125640A0 IT 8125640 A IT8125640 A IT 8125640A IT 2564081 A IT2564081 A IT 2564081A IT 8125640 A0 IT8125640 A0 IT 8125640A0
- Authority
- IT
- Italy
- Prior art keywords
- verification
- recorded messages
- messages
- recorded
- Prior art date
Links
- 238000012795 verification Methods 0.000 title 1
Classifications
-
- 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
- G11B27/3027—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 used signal is digitally coded
- G11B27/3036—Time code signal
-
- 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
- G11B20/00094—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
- G11B20/02—Analogue recording or reproducing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPE696280 | 1980-12-16 | ||
AUPE760881 | 1981-02-13 | ||
AUPE771181 | 1981-02-23 | ||
AUPE845881 | 1981-04-15 | ||
AUPE904381 | 1981-05-27 | ||
AUPE969981 | 1981-07-10 | ||
AUPF030981 | 1981-08-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8125640A0 true IT8125640A0 (it) | 1981-12-16 |
IT1142108B IT1142108B (it) | 1986-10-08 |
Family
ID=27560702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT25640/81A IT1142108B (it) | 1980-12-16 | 1981-12-16 | Verifica di messaggi registrati |
Country Status (7)
Country | Link |
---|---|
US (1) | US4477848A (it) |
EP (1) | EP0067178B1 (it) |
CA (1) | CA1191603A (it) |
IE (1) | IE52736B1 (it) |
IT (1) | IT1142108B (it) |
NZ (1) | NZ199275A (it) |
WO (1) | WO1982002111A1 (it) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2515403A1 (fr) * | 1981-10-28 | 1983-04-29 | Quadrivium Inf | Procede d'identification d'un enregistrement sonore et installation de duplication mettant en oeuvre le procede |
GB8307428D0 (en) * | 1983-03-17 | 1983-04-27 | Aruga M | Recording and reconstructing digital data |
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 |
DE3583737D1 (de) * | 1984-07-16 | 1991-09-12 | Mcwhirter Holdings Pty Ltd | Kontrollsystem fuer aufgezeichnete informationen. |
US4706293A (en) * | 1984-08-10 | 1987-11-10 | Minnesota Mining And Manufacturing Company | Circuitry for characterizing speech for tamper protected recording |
US4823210A (en) * | 1984-08-13 | 1989-04-18 | Verbatim Corporation | Copy protected disk |
AU582216B2 (en) * | 1985-03-18 | 1989-03-16 | Minnesota Mining And Manufacturing Company | Method of ensuring authenticity of recorded information |
US4706282A (en) * | 1985-12-23 | 1987-11-10 | Minnesota Mining And Manufacturing Company | Decoder for a recorder-decoder system |
JPH0789429B2 (ja) * | 1986-02-07 | 1995-09-27 | 株式会社日立製作所 | データ読込み方法 |
GB8809346D0 (en) * | 1988-04-20 | 1988-05-25 | Emi Plc Thorn | Improvements relating to marked recorded signals |
US5825969A (en) * | 1994-02-18 | 1998-10-20 | Hitachi, Ltd. | Information management apparatus for inhibiting reproduction in a video cassette recorder |
US6091816A (en) * | 1995-11-07 | 2000-07-18 | Trimble Navigation Limited | Integrated audio recording and GPS system |
DE19615301A1 (de) * | 1996-04-18 | 1997-10-23 | Deutsche Telekom Ag | Verfahren und Vorrichtung zum Aufzeichnen/Verarbeiten von authentischen Bild- und/oder Tondaten |
JP3998219B2 (ja) * | 1996-06-27 | 2007-10-24 | カシオ計算機株式会社 | 音声記憶再生装置 |
US6368331B1 (en) | 1999-02-22 | 2002-04-09 | Vtarget Ltd. | Method and system for guiding a diagnostic or therapeutic instrument towards a target region inside the patient's body |
FR2887350A1 (fr) * | 2005-06-21 | 2006-12-22 | France Telecom | Procede de securisation d'un contenu stocke sur un support de donnees a partir de la verification d'une signature d'int egrite, programme, dispositif et support correspondants |
US11728796B2 (en) * | 2020-10-14 | 2023-08-15 | Qorvo Us, Inc. | Inverted group delay circuit |
US20220115988A1 (en) | 2020-10-14 | 2022-04-14 | Qorvo Us, Inc. | Power management circuit operable with group delay |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2989595A (en) * | 1955-07-05 | 1961-06-20 | Marchant Res Inc | Superimposed recording |
US3088101A (en) * | 1957-11-07 | 1963-04-30 | Honeywell Regulator Co | Electrical apparatus for certifying magnetic tape |
NL278652A (it) * | 1961-05-29 | |||
US3591731A (en) * | 1968-09-23 | 1971-07-06 | Leigh Prod Inc | Method and apparatus for recording real time superimposed on other information |
US3723878A (en) * | 1970-07-30 | 1973-03-27 | Technical Communications Corp | Voice privacy device |
DE2448445A1 (de) * | 1974-10-10 | 1976-04-22 | Budapesti Radiotechnikai Gyar | Vorrichtung zur magnetischen signalaufzeichnung |
GB1529566A (en) * | 1974-10-16 | 1978-10-25 | Emi Ltd | Magnetic recording |
US4004089A (en) * | 1975-02-28 | 1977-01-18 | Ncr Corporation | Programmable cryptic device for enciphering and deciphering data |
US4052565A (en) * | 1975-05-28 | 1977-10-04 | Martin Marietta Corporation | Walsh function signal scrambler |
US4040099A (en) * | 1975-07-30 | 1977-08-02 | Cook Laboratories, Inc. | Method and apparatus for preparing recorded program material to render detectable unauthorized magnetic tape duplications, and method and apparatus for detecting such duplications |
US4086634A (en) * | 1975-07-30 | 1978-04-25 | Cook Laboratories, Inc. | Method and apparatus for preparing recorded program material to prevent unauthorized duplication by magnetic tape recording |
CA1069233A (en) * | 1977-01-18 | 1980-01-01 | Northern Telecom Limited | Telephone hand set transmitter with improved output response |
US4126761A (en) * | 1977-02-11 | 1978-11-21 | Daniel Graupe | Method of and means for processing an audio frequency signal to conceal intelligility |
US4193061A (en) * | 1978-07-11 | 1980-03-11 | Zoltai John T | Electronic authentication system |
US4194222A (en) * | 1978-08-23 | 1980-03-18 | Minnesota Mining And Manufacturing Company | Multitrack recorder including superimposed real time code |
FR2459532B1 (fr) * | 1979-06-18 | 1987-07-31 | Quadrivium Tech Avancees | Procede pour associer une information auxiliaire a une information principale enregistree et application au controle de la reproduction d'information enregistree |
US4380029A (en) * | 1981-03-13 | 1983-04-12 | Bti Computer Systems | Data recording format and method and apparatus for producing same |
-
1981
- 1981-12-15 NZ NZ199275A patent/NZ199275A/en unknown
- 1981-12-15 IE IE2950/81A patent/IE52736B1/en not_active IP Right Cessation
- 1981-12-16 EP EP82900012A patent/EP0067178B1/en not_active Expired
- 1981-12-16 CA CA000392405A patent/CA1191603A/en not_active Expired
- 1981-12-16 US US06/414,533 patent/US4477848A/en not_active Expired - Fee Related
- 1981-12-16 WO PCT/AU1981/000190 patent/WO1982002111A1/en active IP Right Grant
- 1981-12-16 IT IT25640/81A patent/IT1142108B/it active
Also Published As
Publication number | Publication date |
---|---|
IT1142108B (it) | 1986-10-08 |
EP0067178A1 (en) | 1982-12-22 |
US4477848A (en) | 1984-10-16 |
IE52736B1 (en) | 1988-02-03 |
EP0067178B1 (en) | 1986-07-02 |
IE812950L (en) | 1982-06-16 |
CA1191603A (en) | 1985-08-06 |
NZ199275A (en) | 1984-11-09 |
WO1982002111A1 (en) | 1982-06-24 |
EP0067178A4 (en) | 1983-02-09 |
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