FR2375777A1 - Procede d'enregistrement et de reproduction de signaux video au moyen d'une bande magnetique - Google Patents
Procede d'enregistrement et de reproduction de signaux video au moyen d'une bande magnetiqueInfo
- Publication number
- FR2375777A1 FR2375777A1 FR7739095A FR7739095A FR2375777A1 FR 2375777 A1 FR2375777 A1 FR 2375777A1 FR 7739095 A FR7739095 A FR 7739095A FR 7739095 A FR7739095 A FR 7739095A FR 2375777 A1 FR2375777 A1 FR 2375777A1
- Authority
- FR
- France
- Prior art keywords
- gaps
- magnetic tape
- frame
- gap
- tracks
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/917—Television signal processing therefor for bandwidth reduction
- H04N5/919—Television signal processing therefor for bandwidth reduction by dividing samples or signal segments, e.g. television lines, among a plurality of recording channels
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/49—Fixed mounting or arrangements, e.g. one head per track
- G11B5/4969—Details for track selection or addressing
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Television Signal Processing For Recording (AREA)
- Magnetic Heads (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Abstract
On utilise de préférence une tête magnétique multipiste qui reste fixe par rapport à la bande magnetique déplacée et dont les entrefers de tête sont successivement associés, lors de la course avant, aux lignes d'une trame. Ainsi, la trame est enregistrée ou explorée lors de la reproduction par balayage, entrefer par entrefer, sous la forme de courtes pistes très étroites s'étendant les unes au-dessus des autres. Lors de la course arrière de la bande magnétique, les entrefers de tête sont ensuite associés dans l'ordre inverse aux lignes de la trame, tandis que la succession des pistes est décalée à chaque inversion d'au moins un entrefer. Les entrefers qui font ainsi défaut à la fin de la succession des pistes sont remplacés cycliquement par un nombre correspondant d'entrefers à l'autre extremité de la série des entrefers de tête. Application à la fabrication de magnétoscopes grand public compacts et bon marché et néammoins de grande précision.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2658574A DE2658574C3 (de) | 1976-12-23 | 1976-12-23 | Verfahren zur Aufzeichnung und Wiedergabe von Videosignalen auf Magnetband |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2375777A1 true FR2375777A1 (fr) | 1978-07-21 |
FR2375777B1 FR2375777B1 (fr) | 1983-01-07 |
Family
ID=5996501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7739095A Granted FR2375777A1 (fr) | 1976-12-23 | 1977-12-23 | Procede d'enregistrement et de reproduction de signaux video au moyen d'une bande magnetique |
Country Status (12)
Country | Link |
---|---|
US (1) | US4198662A (fr) |
JP (1) | JPS5380209A (fr) |
BE (1) | BE862233A (fr) |
BR (1) | BR7708587A (fr) |
CH (1) | CH625658A5 (fr) |
DE (1) | DE2658574C3 (fr) |
DK (1) | DK574477A (fr) |
ES (1) | ES465341A1 (fr) |
FR (1) | FR2375777A1 (fr) |
GB (1) | GB1594237A (fr) |
NL (1) | NL7714140A (fr) |
SE (1) | SE7714662L (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5613503A (en) * | 1979-07-16 | 1981-02-09 | Olympus Optical Co Ltd | Fixed-head magnetic recording and reproducing device |
US4750060A (en) * | 1981-10-28 | 1988-06-07 | Canon Kabushiki Kaisha | Recording apparatus |
GB2156137A (en) * | 1984-02-07 | 1985-10-02 | Wilfred Joseph Dickson | An anti-copying device |
US4789961A (en) * | 1984-06-25 | 1988-12-06 | Kirsch Technologies, Inc. | Computer memory back-up with automatic tape positioning |
US5214515A (en) * | 1986-10-28 | 1993-05-25 | Mitsubishi Denki Kabushiki Kaisha | Video signal recording/reproducing apparatus |
KR950008750B1 (ko) * | 1993-02-05 | 1995-08-04 | 대우전자주식회사 | 준고정 헤드 영상 신호 기록 및 재생 장치 |
DE19531075A1 (de) * | 1995-08-23 | 1997-02-27 | Thomson Brandt Gmbh | Magnetbandgerät für die Aufzeichnung und Wiedergabe von Signalen |
US20090174963A1 (en) * | 2008-01-03 | 2009-07-09 | Jason Liang | Tape-based data storage system and head enabling compounded reading rate |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1153795B (de) * | 1950-10-18 | 1963-09-05 | Klangfilm Gmbh | Anordnung zur magnetischen Aufzeichnung, vorzugsweise der Signale von Fernsehbildern |
US2958735A (en) * | 1956-02-24 | 1960-11-01 | Gen Electric | Video tape recording system |
US2952745A (en) * | 1956-02-28 | 1960-09-13 | Gen Electric | Video recorder and reproducer |
US3502795A (en) * | 1965-03-12 | 1970-03-24 | Iit Res Inst | Transducer system and method |
US3921209A (en) * | 1971-06-18 | 1975-11-18 | Matsushita Electric Ind Co Ltd | Digital recording and reproducing system employing ' pcm |
US3986210A (en) * | 1973-02-20 | 1976-10-12 | Matsushita Electric Industrial Co., Ltd. | Magnetic head device using printed circuit techniques |
DE2431545A1 (de) * | 1973-07-12 | 1975-02-06 | Basf Ag | Kopfpositionierungseinrichtung fuer mehrspur-magnetbandgeraete |
US3975764A (en) * | 1973-10-12 | 1976-08-17 | Matsushita Electric Industrial Co., Ltd. | Television signal recording and reproducing system |
AU7789475A (en) * | 1974-02-19 | 1976-08-05 | Basf Ag | Reversal of the direction of tape movement in a tape recorde |
US3958272A (en) * | 1974-02-19 | 1976-05-18 | Basf Aktiengesellschaft | Turn around method and circuit |
-
1976
- 1976-12-23 DE DE2658574A patent/DE2658574C3/de not_active Expired
-
1977
- 1977-12-19 US US05/862,089 patent/US4198662A/en not_active Expired - Lifetime
- 1977-12-20 CH CH1569177A patent/CH625658A5/de not_active IP Right Cessation
- 1977-12-20 NL NL7714140A patent/NL7714140A/xx not_active Application Discontinuation
- 1977-12-21 JP JP15306977A patent/JPS5380209A/ja active Granted
- 1977-12-21 GB GB53154/77A patent/GB1594237A/en not_active Expired
- 1977-12-22 ES ES465341A patent/ES465341A1/es not_active Expired
- 1977-12-22 SE SE7714662A patent/SE7714662L/xx unknown
- 1977-12-22 BR BR7708587A patent/BR7708587A/pt unknown
- 1977-12-22 DK DK574477A patent/DK574477A/da unknown
- 1977-12-23 BE BE2056543A patent/BE862233A/fr unknown
- 1977-12-23 FR FR7739095A patent/FR2375777A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS623483B2 (fr) | 1987-01-26 |
ES465341A1 (es) | 1978-09-16 |
SE7714662L (sv) | 1978-06-24 |
FR2375777B1 (fr) | 1983-01-07 |
DE2658574A1 (de) | 1978-06-29 |
JPS5380209A (en) | 1978-07-15 |
CH625658A5 (fr) | 1981-09-30 |
US4198662A (en) | 1980-04-15 |
DE2658574B2 (de) | 1982-02-04 |
BE862233A (fr) | 1978-06-23 |
DK574477A (da) | 1978-06-24 |
NL7714140A (nl) | 1978-06-27 |
DE2658574C3 (de) | 1982-10-07 |
BR7708587A (pt) | 1978-09-12 |
GB1594237A (en) | 1981-07-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |