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WO1981001907A1 - Dispositif indicateur pour cassettes chargees avec support d'informations magnetique - Google Patents

Dispositif indicateur pour cassettes chargees avec support d'informations magnetique Download PDF

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Publication number
WO1981001907A1
WO1981001907A1 PCT/HU1980/000003 HU8000003W WO8101907A1 WO 1981001907 A1 WO1981001907 A1 WO 1981001907A1 HU 8000003 W HU8000003 W HU 8000003W WO 8101907 A1 WO8101907 A1 WO 8101907A1
Authority
WO
WIPO (PCT)
Prior art keywords
casette
indicator
window
face
indicator device
Prior art date
Application number
PCT/HU1980/000003
Other languages
English (en)
Inventor
M Janosi
Original Assignee
Budapesti Radiotechnikai Gyar
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 Budapesti Radiotechnikai Gyar filed Critical Budapesti Radiotechnikai Gyar
Priority to AU64820/80A priority Critical patent/AU6482080A/en
Priority to BR8009100A priority patent/BR8009100A/pt
Publication of WO1981001907A1 publication Critical patent/WO1981001907A1/fr
Priority to DK135282A priority patent/DK135282A/da
Priority to NO821117A priority patent/NO821117L/no

Links

Classifications

    • 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
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/04—Preventing, inhibiting, or warning against accidental erasing or double recording
    • 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
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • 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
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/04—Magazines; Cassettes for webs or filaments
    • G11B23/041—Details
    • G11B23/042—Auxiliary features
    • 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
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/04—Magazines; Cassettes for webs or filaments
    • G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
    • G11B23/087—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using two different reels or cores
    • G11B23/08707—Details
    • G11B23/0875—Indicating means, e.g. quantity of tape
    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor

Definitions

  • the invention relates to an indicator device for casettes loaded with magnetical information carrier that can be the widely used standardized compact casettes for magnetic tapes, or specially designed casettes comprising flexible magnetical discs for information recording.
  • indicator devices are already used on such casettes, and the information contents of these indicator devices can be read out by appropriate detecting mechanisms.
  • On the rear edge face of the most commonly used standard compact casettes such indicator devices are formed by tabs which are cut out from the casette material at their fourth sides. Such tabs cover respective recesses in the casette body. When such a tab is removed, this will be detected by a mechanism in the tape recorder which prevents the recorded information from being erased by blocking the recording mode of operation of the tape recorder.
  • a similar indicator device is used in chromiumdioxid casettes for which special magnetical bias should be applied during playback and recording.
  • the indicator devices used in compact casettes have several drawbacks.
  • This irreversibility is advantageous in many cases, but there are fields of applications, in which the possibility of changing the already set indicating information is required.
  • the location of the indicator device in the rear edge face of the casette is also not advantageous, because the recorder/playback device should be designed with such sizes to be able to give room to the detecting mechanism which has the task of reading the information associated with the indicator device. This requirement is particularly unpleasant in case of front loaded casette decks, because thereby the minimum height of such decks is increased.
  • casette stores For automation of recording and/or playback, of casettes, special casette stores are required that enable automated casette insertion in recorder and/ or playback devices.
  • the primary object of the present invention is to provide an indicator device, by means of which the indicated information ean be stored with high stability, however, with the possibility of subsequent changes in the stored information content, and which has a simple and inexpensive constructional design and takes few room from the casette volume.
  • a further object of the invention is to provide a device that can simply assure, the always correct insertion of casettes loaded with flexible magnetical information carrier discs in casette stores.
  • an indicator device for casettes loaded with magnetical information carriers, in which one of the faces of the casette defines a window, an indicator block is located and guided for a sliding movement between at least two discrete fixed positions in the window, a positioning means is provided to fix the indicator block in said discrete positions, and the free surfaces of the window covered or uncovered by the indicator block are in respective planes with different heights so that the height difference can well be detected by appropriate detecting means.
  • a device for casettes loaded with flexible magnetical information carrier discs, in which one of the shorter side walls of the casette define a guide slot extending through the full height of the casette which is arranged asymmet rically compared to the imaginary center line of the casette.
  • FIG. 1 shows the axonometric view of a standard compact casette comprising the indicator device according to the invention in its rear edge face;
  • FIG. 2 shows the schematical axonometric view of a casette loaded with flexible magnetical information carrier disc, comprising the indicator device according to the invention on its upper face;
  • FIG.3 shows the top view of the casette of FIG. 2;
  • FIG. 4 shows the side view of the casette shown in
  • FIG. 3 partly in section;
  • FIG. 5 shows the elevation view of the casette of FIG. 3;
  • FIG. 6 shows an enlarged axonometrical detail of a casette wall comprising a window for locating the indicator device according to the invention
  • FIG. 7 shows an enlarged axonometric view of the sliding member of the indicator device according to the invention
  • FIG. 8 shows an enlarged axonometric detail of an inner casette wall supporting the sliding member of FIG. 7.
  • FIG. 1 shows a conventional compact casette with a rear edge face, in which instead of the commonly used removable indicator tabs, a first embodiment of the indicator device according to the present invention is illustrated.
  • the indicator device comprises a window 10 defined in the rear edge face of the casette, end an indicator block 11 located and guided in the window 10.
  • the indicator block 11 In longitudinal direction the indicator block 11 is shorter than the window 10, preferably shorter than or at most equal to the half length thereof, and the block 11 can slide in the. window between two fixed end positions.
  • the indicator block 11 covers the left part of the window 10. In that case the free face of the indicator block 11 flushes with the plane of the rear edge of the casette.
  • the part of the window 10 which is uncovered by the indicator block 11 defines an indicator recess 12.
  • the free bottom surface of the indibator recess 12 is substantially parallel to the rear edge of the casette and it lies inwardly compared thereto.
  • the indicator block 11 When the indicator block 11 is slid in the window 10 into the second fixed position, then the indicator recess 12 will be at the other (left) side of the window 10. It can be seen, that the. relative position of the indicator block 11 and indicator recess 12 within the window 10 may carry information that can be detected by a suitable detecting means attached to the window 10.
  • the indicator block 11 defines depression 13 for facilitating its lateral movement.
  • the position of the indicator device can indicate the "further recording is allowed resp. inhibited" condition, a particular characteristic of the magnetical information carrier (tape) loaded in the casette (e.g. CrO 2 tape or normal tape), or any other information that can be significant when the casette is used.
  • a particular characteristic of the magnetical information carrier (tape) loaded in the casette e.g. CrO 2 tape or normal tape
  • FIG. 2 shows a further way of application of the indicator device according to the invention.
  • the casette is loaded by a flexible magnetical information recording disc instead of the conventional magnetic tape, and such disc is capable of storing information in a manner similar to the information storage in mini-floppy applications.
  • FIG. 2 shows only those parts of such a casette that are important for understanding the present invention.
  • indicator block 23 In the oblong-like windows indicator block 23 is located in a far position from the wide edge of the casette, while indicator blocks 24 and 25 are in close positions to the wide casette edge.
  • the side by side arrangement of the three indicator devices is preferable, because that can facilitate the design of the associated three detecting means (not shown).
  • the above described arrangement is preferable in view of the applications of the casette, because if the indicator devices are arranged in the largest face of the casette, then the size of the recorder/playback unit will not be increased due to the presence of the detecting means associated with the indicator devices in the recorder playback unit.
  • one of the shorter side edge surfaces of the casette defines an out wardly open guiding slot 26 being offset from the imaginary center line of the casette. Owing to the asymmetrical location of the guiding slot 26 it will be possible to insert such casettes, loaded with flexible magnetical information carrier discs, in a suitable casette store. If in the casette store (not shown) an appropriate guiding rod is provided that fits in the guiding slots 26 of the casettes inserted in the store, then the casette insertion can be done only with a predetermined relative casette position with respect to the store.
  • the guiding slot 26 is closed only from three sides, which is in contrast to conventional side indicating recesses that are closed from five sides, i. ⁇ . they are open only from their faces.
  • FIGs. 3, 4 and 5 show further details of the indicator device illustrated in FIG. 2.
  • FIG. 3 corresponds substantially to the top view of the casette shown in FIG. 2.
  • the casette has 1 a comparatively thick upper wall 30 in the region of the windows which is supported from below by a separate support wall 31.
  • the indicator blocks 23, 24 and 25 comprise respective widened bottom parts which are guided between the upper wall 30 and the support wall 31.
  • the sectional view of FIG. 4 shows the open indicator recess of the indicator device 20 having a depth "d". When the associated indicator block is moved into its other position, the depth "d" will be practically zero.
  • a typical value for the depth "d" is between about 2 - 2,5 mm which is sufficient for instrumental depth detection.
  • FIG. 5 shows the elevation view of the guiding slot 26. It can be understood that the casette can be slid normal to the face plane if. a guiding rod (not shown) of a. casette store engages the guiding slot 26, which can facilitate automatic casette loading.
  • FIGs 6, 7 and 8 show enlarged details of a preferable embodiment of the indicator device according to the invention.
  • FIG. 6 shows a detail of the upper wall 30 of a casette defining an oblong-like window 10.
  • FIG. 7 shows, a slidable moving part, and the indicator block 11 is jumping out of the surface of the moving part.
  • the indicator block 11 fits in the window 10.
  • a wedge-shaped groove 15 extends across the bottom of .the moving part 14 in the middle region thereof, and the left end of the moving part is provided with a flanked edge 16, the angle of which corresponding to that of the groove 15.
  • FIG. 8 shows ah enlarged detail of the support wall 31, on which a transversal wedge-like rib 32 is provided. If the elements shown separately in FIGs.
  • the engagement is, however, stable enough to maintain any set position of the indicator device through a long period of time.
  • the number of the indicator devices arranged beside each other is determined by the requirements for indication being characteristic to the casette system. It is preferable, however, to provide room for additional indicator devices even if such additional devices are not required in given conditions, because technical development might increase later the need for indication.

Landscapes

  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Automatic Tape Cassette Changers (AREA)

Abstract

Dispositif indicateur pour cassettes chargees avec des supports d'informations magnetiques, ou l'une des faces de la cassette definit une fenetre, un bloc indicateur etant situe et guide avec un mouvement de coulissement entre au moins deux positions fixes discretes dans la fenetre, des moyens de positionnement etant prevus pour fixer le bloc indicateur dans lesdites positions discretes, et les surfaces libres de la fenetre couverte ou non couverte par le bloc indicateur se trouvent dans des plans respectifs avec des hauteurs differentes de maniere a ce que la difference de hauteur puisse etre bien detectee par des moyens de detection appropries.
PCT/HU1980/000003 1980-08-05 1980-08-05 Dispositif indicateur pour cassettes chargees avec support d'informations magnetique WO1981001907A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU64820/80A AU6482080A (en) 1980-08-05 1980-08-05 Indicator device for cassettes loaded with magnetical information carrier
BR8009100A BR8009100A (pt) 1980-08-05 1980-08-05 Dispositivo indicador para cassetes carregados com portador de informacao magnetico
DK135282A DK135282A (da) 1980-08-05 1982-03-24 Indikatorindretning til kassetter med magnetiske informationsbaerere
NO821117A NO821117L (no) 1980-08-05 1982-04-02 Indikatoranordning for en kassett som er ladet med en magnetisk informasjonsbaerer

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
WOHU80/00003 1980-08-05
BE885013 1980-09-01
BE0/201934A BE885013A (fr) 1980-09-01 1980-09-01 Dispositif indicateur pour cassettes contenant un support d'informations magnetique

Publications (1)

Publication Number Publication Date
WO1981001907A1 true WO1981001907A1 (fr) 1981-07-09

Family

ID=25652223

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU1980/000003 WO1981001907A1 (fr) 1980-08-05 1980-08-05 Dispositif indicateur pour cassettes chargees avec support d'informations magnetique

Country Status (4)

Country Link
EP (1) EP0056799A4 (fr)
BE (1) BE885013A (fr)
CA (1) CA1161553A (fr)
WO (1) WO1981001907A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2496312A1 (fr) * 1980-12-16 1982-06-18 Sony Corp Dispositif pour eviter un effacement accidentel d'une bande ou d'un disque de cassette etc.
EP0091171A1 (fr) * 1982-04-06 1983-10-12 Koninklijke Philips Electronics N.V. Cassette à bande magnétique
EP0201258A2 (fr) * 1985-04-29 1986-11-12 Minnesota Mining And Manufacturing Company Elément de sécurité d'enregistrement réutilisable pour cassette à bande vidéo
WO1987003133A1 (fr) * 1985-11-19 1987-05-21 Eastman Kodak Company Mecanisme indicateur d'enregistrement ou de non-enregistrement pour cassettes
EP0274566A2 (fr) * 1987-01-16 1988-07-20 Shape Inc. Indicateur réutilisable permettant ou non l'écriture pour une cassette à bande vidéo
EP0368416A1 (fr) * 1988-11-10 1990-05-16 Koninklijke Philips Electronics N.V. Système d'enregistrement et/ou de lecture de signaux sur des supports d'information placés dans des cassettes
WO1991005348A1 (fr) * 1989-10-05 1991-04-18 Eastman Kodak Company Appareil pour la determination magnetique de l'etat d'un chargeur dans un enregistreur magnetique
WO1993021633A1 (fr) * 1992-04-17 1993-10-28 Minnesota Mining And Manufacturing Company Element de stockage de donnees polyvalent a identification automatique
EP0677847A1 (fr) * 1994-04-15 1995-10-18 International Business Machines Corporation Etiquette pour cassette de données
EP0677845A2 (fr) * 1994-04-13 1995-10-18 Minnesota Mining And Manufacturing Company Elément et système de stockage de données

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675875A (en) * 1970-10-12 1972-07-11 Du Pont Corrugated liner for recording tape cassettes
US3706426A (en) * 1970-11-27 1972-12-19 Ibm Container with brake for enclosed reel
GB1471486A (en) * 1974-06-24 1977-04-27 Shui Ting Lu Magnetic tape cassette
US4072995A (en) * 1975-11-21 1978-02-07 Olympus Optical Co., Ltd. Tape viewing system for micro-cassette tape recorder

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3601553A (en) * 1970-07-21 1971-08-24 Bell & Howell Co Information replay apparatus
US3828363A (en) * 1973-05-09 1974-08-06 S Somers Cassette containing two hubs carrying a magnetic tape, for use with recording/reproducing apparatus
US3950786A (en) * 1975-02-07 1976-04-13 K/Tronic, Inc. Magnetic tape cassette with sliding door to inhibit recording
JPS5540624Y2 (fr) * 1975-04-17 1980-09-22
US4272795A (en) * 1979-06-04 1981-06-09 Texas Instruments Incorporated Information storage system and recording cartridge having precise alignment features
JPS5698759A (en) * 1979-12-29 1981-08-08 Sony Corp Recording and reproducing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675875A (en) * 1970-10-12 1972-07-11 Du Pont Corrugated liner for recording tape cassettes
US3706426A (en) * 1970-11-27 1972-12-19 Ibm Container with brake for enclosed reel
GB1471486A (en) * 1974-06-24 1977-04-27 Shui Ting Lu Magnetic tape cassette
US4072995A (en) * 1975-11-21 1978-02-07 Olympus Optical Co., Ltd. Tape viewing system for micro-cassette tape recorder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0056799A4 *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2496312A1 (fr) * 1980-12-16 1982-06-18 Sony Corp Dispositif pour eviter un effacement accidentel d'une bande ou d'un disque de cassette etc.
EP0091171A1 (fr) * 1982-04-06 1983-10-12 Koninklijke Philips Electronics N.V. Cassette à bande magnétique
EP0201258A2 (fr) * 1985-04-29 1986-11-12 Minnesota Mining And Manufacturing Company Elément de sécurité d'enregistrement réutilisable pour cassette à bande vidéo
EP0201258A3 (fr) * 1985-04-29 1988-01-27 Minnesota Mining And Manufacturing Company Elément de sécurité d'enregistrement réutilisable pour cassette à bande vidéo
WO1987003133A1 (fr) * 1985-11-19 1987-05-21 Eastman Kodak Company Mecanisme indicateur d'enregistrement ou de non-enregistrement pour cassettes
EP0274566A3 (en) * 1987-01-16 1989-08-23 Shape Inc. Reuseable write enable/disable indicator for a video tape cassette
EP0274566A2 (fr) * 1987-01-16 1988-07-20 Shape Inc. Indicateur réutilisable permettant ou non l'écriture pour une cassette à bande vidéo
US5184255A (en) * 1987-01-16 1993-02-02 Shape Inc. Video tape cassette with a reusable recording enable/disable slide tab
EP0368416A1 (fr) * 1988-11-10 1990-05-16 Koninklijke Philips Electronics N.V. Système d'enregistrement et/ou de lecture de signaux sur des supports d'information placés dans des cassettes
US5325243A (en) * 1988-11-10 1994-06-28 U.S. Philips Corporation System for selectively interfacing information carriers by physically accepting cassettes
WO1991005348A1 (fr) * 1989-10-05 1991-04-18 Eastman Kodak Company Appareil pour la determination magnetique de l'etat d'un chargeur dans un enregistreur magnetique
WO1993021633A1 (fr) * 1992-04-17 1993-10-28 Minnesota Mining And Manufacturing Company Element de stockage de donnees polyvalent a identification automatique
EP0677845A2 (fr) * 1994-04-13 1995-10-18 Minnesota Mining And Manufacturing Company Elément et système de stockage de données
EP0677845A3 (fr) * 1994-04-13 1996-01-24 Minnesota Mining & Mfg Elément et système de stockage de données.
EP0677847A1 (fr) * 1994-04-15 1995-10-18 International Business Machines Corporation Etiquette pour cassette de données

Also Published As

Publication number Publication date
CA1161553A (fr) 1984-01-31
BE885013A (fr) 1980-12-31
EP0056799A1 (fr) 1982-08-04
EP0056799A4 (fr) 1984-09-18

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