FR2375782A1 - METHOD AND DEVICE FOR ERROR REDUCTION IN AUDIO-FREQUENCY SIGNAL RECORDING - Google Patents
METHOD AND DEVICE FOR ERROR REDUCTION IN AUDIO-FREQUENCY SIGNAL RECORDINGInfo
- Publication number
- FR2375782A1 FR2375782A1 FR7739366A FR7739366A FR2375782A1 FR 2375782 A1 FR2375782 A1 FR 2375782A1 FR 7739366 A FR7739366 A FR 7739366A FR 7739366 A FR7739366 A FR 7739366A FR 2375782 A1 FR2375782 A1 FR 2375782A1
- Authority
- FR
- France
- Prior art keywords
- audio
- frequency signal
- signal recording
- recording
- error reduction
- 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
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
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1803—Error detection or correction; Testing, e.g. of drop-outs by redundancy in data representation
-
- 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
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Detection And Correction Of Errors (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Error Detection And Correction (AREA)
Abstract
L'invention concerne l'enregistrement magnétique de signaux audiofréquences. Des signaux stéréophoniques appliqués sur les bornes 2L et 2R sont convertis sous forme numérique par les convertisseurs 5L et 5R, puis codés sous un format vidéo pour être enregistrés à l'aide d'un magnétoscope classique 1. Pour améliorer la qualité du signal reproduit, on compare deux versions décalées dans le temps du même signal d'entrée, afin de détecter des erreurs éventuelles. Application à l'enregistrement de signaux stéréophoniques sur un magnétoscopeThe invention relates to the magnetic recording of audio-frequency signals. Stereophonic signals applied to terminals 2L and 2R are converted into digital form by converters 5L and 5R, then encoded into video format for recording using a conventional VCR 1. To improve the quality of the reproduced signal, two time-shifted versions of the same input signal are compared in order to detect any errors. Application to the recording of stereophonic signals on a video tape recorder
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15827276A JPS5381222A (en) | 1976-12-27 | 1976-12-27 | Digital signal transmitting system |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2375782A1 true FR2375782A1 (en) | 1978-07-21 |
FR2375782B1 FR2375782B1 (en) | 1983-02-11 |
Family
ID=15667972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7739366A Granted FR2375782A1 (en) | 1976-12-27 | 1977-12-27 | METHOD AND DEVICE FOR ERROR REDUCTION IN AUDIO-FREQUENCY SIGNAL RECORDING |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS5381222A (en) |
AT (1) | AT380608B (en) |
AU (1) | AU521114B2 (en) |
CA (1) | CA1097819A (en) |
DE (1) | DE2758276A1 (en) |
FR (1) | FR2375782A1 (en) |
GB (1) | GB1591059A (en) |
IT (1) | IT1193270B (en) |
NL (1) | NL7714443A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2416591A1 (en) * | 1978-02-01 | 1979-08-31 | Matsushita Electric Ind Co Ltd | DIGITAL ACOUSTIC SIGNAL RECORDER |
EP0010506A1 (en) * | 1978-10-25 | 1980-04-30 | Thomson-Brandt | Digital coding and decoding methods and devices for the recording of audio signals with a television signal, particularly on a video disk |
EP0205200A1 (en) * | 1985-05-21 | 1986-12-17 | POLYGRAM GmbH | Method for transmitting audio and additional information in digital form |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5556744A (en) * | 1978-10-23 | 1980-04-25 | Sony Corp | Pcm signal transmission device |
CA1133639A (en) * | 1979-01-30 | 1982-10-12 | Masato Tanaka | Method and apparatus for editing digital signals recorded on a record medium |
US4423441A (en) * | 1979-08-30 | 1983-12-27 | Mitsubishi Denki Kabushiki Kaisha | PCM Record reproducer |
JPS58181394A (en) * | 1982-04-16 | 1983-10-24 | Meidensha Electric Mfg Co Ltd | Code transmitting method |
JPS6124063A (en) * | 1984-07-11 | 1986-02-01 | Matsushita Electric Ind Co Ltd | Digital recording and reproducing device of stereophonic sound |
JP2539171Y2 (en) * | 1990-09-26 | 1997-06-25 | 株式会社リコー | Reader |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1574639A (en) * | 1967-08-08 | 1969-07-11 | ||
US3721773A (en) * | 1970-10-09 | 1973-03-20 | Ampex | Magnetic head transducer assembly for redundantly recording data on and reproducing data from dual-tracks of a magnetic recording medium |
US3761903A (en) * | 1971-11-15 | 1973-09-25 | Kybe Corp | Redundant offset recording |
US3883891A (en) * | 1974-08-22 | 1975-05-13 | Rca Corp | Redundant signal processing error reduction technique |
FR2248574A1 (en) * | 1973-10-19 | 1975-05-16 | France Etat | System for recording numerical programme on magnetic tape - has counter determining period double that of introduction sign, with detection and verification |
-
1976
- 1976-12-27 JP JP15827276A patent/JPS5381222A/en active Granted
-
1977
- 1977-12-19 CA CA293,317A patent/CA1097819A/en not_active Expired
- 1977-12-22 AU AU31883/77A patent/AU521114B2/en not_active Expired
- 1977-12-23 GB GB5380777A patent/GB1591059A/en not_active Expired
- 1977-12-23 IT IT5235477A patent/IT1193270B/en active
- 1977-12-27 AT AT933377A patent/AT380608B/en not_active IP Right Cessation
- 1977-12-27 DE DE19772758276 patent/DE2758276A1/en active Granted
- 1977-12-27 FR FR7739366A patent/FR2375782A1/en active Granted
- 1977-12-27 NL NL7714443A patent/NL7714443A/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1574639A (en) * | 1967-08-08 | 1969-07-11 | ||
US3721773A (en) * | 1970-10-09 | 1973-03-20 | Ampex | Magnetic head transducer assembly for redundantly recording data on and reproducing data from dual-tracks of a magnetic recording medium |
US3761903A (en) * | 1971-11-15 | 1973-09-25 | Kybe Corp | Redundant offset recording |
FR2248574A1 (en) * | 1973-10-19 | 1975-05-16 | France Etat | System for recording numerical programme on magnetic tape - has counter determining period double that of introduction sign, with detection and verification |
US3883891A (en) * | 1974-08-22 | 1975-05-13 | Rca Corp | Redundant signal processing error reduction technique |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2416591A1 (en) * | 1978-02-01 | 1979-08-31 | Matsushita Electric Ind Co Ltd | DIGITAL ACOUSTIC SIGNAL RECORDER |
EP0010506A1 (en) * | 1978-10-25 | 1980-04-30 | Thomson-Brandt | Digital coding and decoding methods and devices for the recording of audio signals with a television signal, particularly on a video disk |
US4314369A (en) | 1978-10-25 | 1982-02-02 | Thomson-Brandt | Digital coding process for recording sound channels with a television signal and apparatus realizing this process |
EP0205200A1 (en) * | 1985-05-21 | 1986-12-17 | POLYGRAM GmbH | Method for transmitting audio and additional information in digital form |
Also Published As
Publication number | Publication date |
---|---|
DE2758276C2 (en) | 1990-01-11 |
DE2758276A1 (en) | 1978-07-06 |
AT380608B (en) | 1986-06-25 |
IT1193270B (en) | 1988-06-15 |
FR2375782B1 (en) | 1983-02-11 |
JPS6136311B2 (en) | 1986-08-18 |
ATA933377A (en) | 1985-10-15 |
AU521114B2 (en) | 1982-03-18 |
AU3188377A (en) | 1979-06-28 |
CA1097819A (en) | 1981-03-17 |
NL7714443A (en) | 1978-06-29 |
JPS5381222A (en) | 1978-07-18 |
GB1591059A (en) | 1981-06-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |