WO1999063533A1 - Disque compact, notamment dvd - Google Patents

Disque compact, notamment dvd Download PDF

Info

Publication number
WO1999063533A1
WO1999063533A1 PCT/DE1999/001592 DE9901592W WO9963533A1 WO 1999063533 A1 WO1999063533 A1 WO 1999063533A1 DE 9901592 W DE9901592 W DE 9901592W WO 9963533 A1 WO9963533 A1 WO 9963533A1
Authority
WO
WIPO (PCT)
Prior art keywords
data carrier
data
circle
protective housing
data area
Prior art date
Application number
PCT/DE1999/001592
Other languages
German (de)
English (en)
Inventor
Ronald Grafe
Original Assignee
Ronald Grafe
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
Priority claimed from DE29809900U external-priority patent/DE29809900U1/de
Application filed by Ronald Grafe filed Critical Ronald Grafe
Publication of WO1999063533A1 publication Critical patent/WO1999063533A1/fr

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
    • G11B33/04—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon modified to store record carriers
    • G11B33/0405—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon modified to store record carriers for storing discs
    • G11B33/0411—Single disc boxes
    • G11B33/0422—Single disc boxes for discs without cartridge
    • G11B33/0427—Single disc boxes for discs without cartridge comprising centre hole locking means
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
    • G11B33/04—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon modified to store record carriers
    • G11B33/0405—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon modified to store record carriers for storing discs

Definitions

  • the invention relates to standard round, disk-shaped data carriers, such as CD, CD-ROM, CD-R, CD-RW or DVD, which can also be given a smaller shape.
  • CDs for computer drives should as far as possible not contain any unbalance in order not to endanger their functionality or the drives.
  • Corresponding data carriers in the form of credit cards (EP 0 343 982 A 2) or similar forms are known as smaller forms (round 80 mm shape reduced to the approximate width of a credit card, design MR 14-99: M 9702996 / M 9704019).
  • data carriers in the form of a credit card or similar formats can be damaged in a short time when transported in purses or key pockets. Purses or key pockets are often kept in a back pocket or other pocket. Significant mechanical loads occur. When transporting a CD in this way, for example, cracks or breaks can occur in the polycarbonate CD material after a short transport time.
  • the coating can also be damaged. This is particularly sensitive with the CD-R. So far there are no data carriers available on the market that are both unbreakable and insensitive to considerable pressure.
  • a protective case for transport in purses or key pockets should not be more than 61 mm wide, with a maximum thickness of 5 mm.
  • ERSflZBL ⁇ T (RULE 26) Portability.
  • the thickness of 5 mm should never be exceeded, since it already exceeds the thickness of all objects that are usually transported in the wallet.
  • Three relevant size standards are used for comparison.
  • Check or credit cards, including the protective cover have maximum external dimensions of approx. 58 mm wide x 4 mm thick x 90 mm long, whereby the check or credit card itself is 54 mm wide with a thickness of approx. 1 mm and 85 mm long. These dimensions allow a convenient insertion of the credit card, including the envelope, in many credit card slots in wallets and purses, because some of these credit card slots have an internal width of more than 61 mm.
  • a pocket-sized calendar in playing card size should also be able to be inserted there.
  • Playing cards or pocket calendars are often 61 mm wide. Even a protective housing with the external dimensions of 61 mm wide x 5 mm thick could often be placed in these compartments despite the thickness of 5 mm. At least this protective housing can be inserted into the larger ID or bill compartments. Even small bill exchanges are so wide inside that you can still put a 10 DM bill unfolded in the bill compartment. The 10 DM bill is 65 mm wide, but only a fraction of a millimeter thick. A protective housing that is considerably thicker than the banknote itself cannot be 65 mm wide. Otherwise it could not be fully inserted into the narrow bill compartments due to the thickness of 5 mm. Taking into account the thickness of the protective housing, the maximum width of the protective housing is again approximately 61 mm. This means that it can still be inserted into small bill exchanges.
  • the width of 61 mm is also the approximate inner width of many key pockets or coin pockets. These should also allow you to take credit cards with you, including a fixed protective cover. A corresponding protective housing with the dimensions of 61 mm width x 5 mm thickness can generally also be inserted here.
  • the original credit card format is 54 mm wide.
  • CDs in the form of credit cards or similar forms usually have a width of approx. 56 to 58 mm. This larger width is particularly necessary so that a relevant amount of data can be stored at all. With a width of 58 mm, almost twice the storage capacity is possible compared to the width of 56 mm. If one takes into account the comparatively small storage capacity of these reduced CDs, then the CD with a width of 58 mm is to be preferred, especially since this CD is only slightly wider than that with the minimum width of 56 mm. A corresponding protective case for this CD 58 mm width would be approx.
  • the protective housing should be made of simple material for use as an inexpensive mass product. Robust plastics, for example, can be used as the material, which were previously also used for stable credit card cases.
  • the protective housing can be a maximum of 5 mm thick (see above).
  • the CD itself is about 1.2 mm thick.
  • CDs in the middle area are slightly thicker than 1.2 mm.
  • Such a protective case in which the CD is almost without play, would only be stable to a limited extent. It does not prevent the CD from being affected by these deformation forces with almost every action of deformation forces on the protective housing.
  • the length of a corresponding protective housing would have to be at least 83 mm in order to be able to accommodate the smallest currently known CD with a length of 80 mm, see the design models mentioned above. If you take into account the length of this protective housing of at least 83 mm and the resulting leverage effects, considerable effects can result from deformation forces during transport. There is also an attack surface of at least 83 mm x 61 mm, which is relatively large compared to the actual data area, for these deformation forces.
  • this protective housing therefore approximately requires the dimensions of a credit card sleeve. Bending this relatively elastic protective housing can damage the CD. In addition, this protective housing could hardly protect the CD from the effects of pressure, since the elastic housing material lies almost directly on the CD. Now there would be the possibility to reduce the material thickness of the protective housing and to allow the CD some play in the protective housing. The CD is thus floating and is therefore not itself affected if it is deformed or pressed onto the protective housing. However, it is known that simple materials disproportionately lose stability, the thinner the material thickness. This results in major stability problems, particularly in the longitudinal axis of this protective housing. This disadvantage thus removes the envisaged advantage.
  • a protective housing matching the CDs in the form of a credit card or similar forms can only be made of stable material and with sufficient play if the overall thickness of the protective housing is increased considerably.
  • the protective housing would no longer be suitable for universal transport in purses or key pockets.
  • a high quality material would therefore be required. This would have to meet very high requirements.
  • the material should be almost resistant to pressure and deformation forces and also be almost unbreakable. It remains open whether the desired protective function of a housing for CDs in the form of credit cards can be achieved in terms of materials.
  • a rigid housing of this length represents a foreign body in the wallet.
  • a standard round, disk-shaped data carrier such as CD, CD-ROM or DVD
  • the diameter of the potential data area suitable for transport in wallets and other small pockets is integrated into the smallest possible compact and small total area of the data carrier, so that the data carrier can be inserted into a respectively compact protective housing and
  • the disk is designed by the shape of elastic and
  • the recessed material areas of the data carrier enable the installation of internal reinforcing ribs and locking mechanisms in the protective housing, so that a corresponding protective housing can be made as stable as possible even using a simple, conventional material.
  • the data carrier therefore has a potential data area arranged concentrically around the axis of rotation, bordering on the contact surfaces which are connected to the data area.
  • These contact surfaces contain at least 4 outer circumferential points on an imaginary circle around the axis of rotation.
  • the outer circumference points must be spaced as far apart as possible.
  • the diameter of the imaginary circle corresponds to the diameter of the 80 mm or smaller standard loading troughs of corresponding drive drawers.
  • No point on the data carrier lies outside the circle.
  • the entire area of this data carrier also lies within an imaginary rectangle that circumscribes the data area. Depending on the selected diameter of the data area, this rectangle must be as small as possible, but the corner points must not lie within the circle.
  • the contact surfaces which have become more elastic due to the cut-outs in the material compared to a rigid rectangular data carrier shape, reduce the deformation forces on the actual data area. Deformed or damaged data carriers can cause considerable damage, especially with fast drives. The data can also become illegible. These problems are also reduced by the data carrier form presented here.
  • the decisive advantage is that the recesses allow the installation of internal reinforcing ribs in the protective housing. This gives this protective housing a significantly increased stability with the same external dimensions compared to containers for only rectangular data carrier shapes without cutouts.
  • the pressure stability of a corresponding protective housing is decisively determined by the distance between the inner reinforcement of the protective housing and the outer wall.
  • the torsional stiffness of the protective housing is increased considerably. In this way, the data carrier can be largely protected against deformation forces. Due to the compact size of the protective housing, it is still universally transportable. Larger deformation forces that act on the data carrier despite the protective housing are reduced in their effect on the coated data area by the elastic design of the new data carrier.
  • a corresponding protective housing can also be designed without side walls.
  • the reinforcing ribs then serve as spacers between the housing base and the housing cover.
  • This protective housing has a reduced stability.
  • the advantage, however, is that this protective housing can be made as wide as the data area. This creates a protective housing with the smallest conceivable dimensions in terms of area.
  • Drive drawers are usually open to the rear.
  • the support surfaces can be provided with a thin, friction-intensive layer. This makes sliding more difficult due to its increased friction. Rubber, for example, can be used as the material.
  • FIG. 1 shows a plan view of a data carrier according to the invention in its ideal form with eight cutouts of the material in the area of the contact surfaces.
  • 2 shows a plan view of a data carrier according to the invention with six cutouts of the material in the area of the contact surfaces.
  • FIG. 3 shows the lower part of a corresponding transport housing with the internal reinforcing ribs for a data carrier according to FIG. 1.
  • the ideal version currently results in a size of this data carrier as CD or DVD of approx. 57.5 mm x 57.5 mm.
  • the dimensions indicate the maximum extent in the surface, starting from the axis of rotation in the horizontal x vertical direction. This results in a diagonal diameter of approx. 81 mm, measured from the outer circumferential points (4) of each support surface (3) via the axis of rotation to the corresponding counterpoint of the opposite support surface.
  • the data area (2) is circumscribed by an imaginary square (5), the corner points of which are not within the circle (1) and which is as small as possible.
  • the support surfaces (3) are completely integrated therein according to the invention.
  • the data carrier has exactly four outer circumferential points (4) for centering. This CD can be inserted into the smallest loading tray of current CD or DVD drives.
  • the loading tray has a diameter of at least 80 mm in order to be able to insert 80 mm single CDs. In fact, this diameter is more than 81 mm, since the round CDs in particular need some play to insert. If the loading trough actually only had a diameter of 80 mm, then a CD in the sense of this exemplary embodiment would have maximum dimensions of approximately 56.6 x 56.6 mm.
  • the potential data area (2) is 57.5 mm in outside diameter. For technical reasons, this maximum value of 57.5 mm is factually not fully used.
  • the size of a corresponding protective housing is therefore approximately 61 mm x 61 mm x 5 mm. This size still allows the universal transport of the protective housing and thus the data carrier even in small purses or key pockets.
  • the capacity of a data carrier in the above-mentioned ideal size for the CD-ROM is currently around 30 MB.
  • FIG. 2 Another exemplary embodiment is shown in FIG. 2: A data area of less than approximately 57.5 mm in diameter was selected. This diameter is again related to an actual diameter of the loading trough of approx. 81 mm.
  • the data area is no longer circumscribed by a square, but by a simple, imaginary rectangle. This rectangle is as small as possible, provided there is no corner point within the circle.
  • the contact surfaces lie within the rectangle. There are exactly four outer circumference points.
  • a CD in credit card format similar to the imaginary rectangle, has no recesses.

Landscapes

  • Packaging For Recording Disks (AREA)

Abstract

Les supports de données, tels que le disque compact ou le DVD, sont trop encombrants, dans leurs dimensions standard, pour être transportés dans des porte-monnaie. Les formes plus petites connues de ces supports de données, pouvant être introduites dans un porte-monnaie, sont extrêmement difficiles à protéger contre des dégradations. L'invention vise à créer un support de données de petite taille, pouvant être protégé contre des dégradations au moyen d'un boîtier de protection pouvant être produit de manière économique. L'invention vise en outre à permettre l'utilisation universelle de ce support de données, dans des dispositifs de lecture standard, sans avoir recours à un adaptateur. A cet effet, le support de données selon l'invention est élastique et présente des évidements (6) au niveau des surfaces d'appui (3) qui permettent de le munir d'un boîtier de protection rectangulaire comportant des nervures intérieures de renfort. Ce boîtier de protection présente ainsi une stabilité accrue. Les surfaces d'appui peuvent être munies d'un revêtement résistant à la friction qui améliore les propriétés fonctionnelles du boîtier.
PCT/DE1999/001592 1998-06-03 1999-05-31 Disque compact, notamment dvd WO1999063533A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE29809900U DE29809900U1 (de) 1998-06-03 1998-06-03 Spezielle kleine Form einer Compact-Disc (CD/CD-ROM/CD-R/CD-RW) zum Transport in Geldbörsen o.ä. Behältnissen
DE29809900.4 1998-06-03
DE19831685.2 1998-07-15
DE19831685A DE19831685C1 (de) 1998-06-03 1998-07-15 Kleinere Form eines standardmäßig runden, scheibenförmigen Datenträgers, wie CD, CD-ROM, CD-R, CD-RW oder DVD, besonders geeignet für den Transport in Geldbörsen

Publications (1)

Publication Number Publication Date
WO1999063533A1 true WO1999063533A1 (fr) 1999-12-09

Family

ID=26047433

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/001592 WO1999063533A1 (fr) 1998-06-03 1999-05-31 Disque compact, notamment dvd

Country Status (1)

Country Link
WO (1) WO1999063533A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19543029A1 (de) * 1995-11-07 1996-05-09 Mario Koss Verfahren zum Bearbeiten von Scheiben
EP0723266A2 (fr) * 1995-01-18 1996-07-24 Cyberwerks Interactive L.L.C. Support de stockage de données digitales à couches minces, lisible optiquement, et adaptateur de lecture
AT1939U1 (de) * 1997-01-17 1998-01-26 Sony Dadc Austria Ag Compact disk

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0723266A2 (fr) * 1995-01-18 1996-07-24 Cyberwerks Interactive L.L.C. Support de stockage de données digitales à couches minces, lisible optiquement, et adaptateur de lecture
DE19543029A1 (de) * 1995-11-07 1996-05-09 Mario Koss Verfahren zum Bearbeiten von Scheiben
AT1939U1 (de) * 1997-01-17 1998-01-26 Sony Dadc Austria Ag Compact disk

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