WO2000065525A1 - Carte memoire a structure externe amelioree - Google Patents

Carte memoire a structure externe amelioree Download PDF

Info

Publication number
WO2000065525A1
WO2000065525A1 PCT/IL2000/000226 IL0000226W WO0065525A1 WO 2000065525 A1 WO2000065525 A1 WO 2000065525A1 IL 0000226 W IL0000226 W IL 0000226W WO 0065525 A1 WO0065525 A1 WO 0065525A1
Authority
WO
WIPO (PCT)
Prior art keywords
memory card
metal
memory
disc
circular
Prior art date
Application number
PCT/IL2000/000226
Other languages
English (en)
Inventor
Zvi Weinberger
Original Assignee
Mem-Card Computer Memory Systems Ltd.
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 Mem-Card Computer Memory Systems Ltd. filed Critical Mem-Card Computer Memory Systems Ltd.
Priority to AU39856/00A priority Critical patent/AU3985600A/en
Publication of WO2000065525A1 publication Critical patent/WO2000065525A1/fr

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/04—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the shape
    • G06K19/041—Constructional details
    • G06K19/042—Constructional details the record carrier having a form factor of a credit card and including a small sized disc, e.g. a CD or DVD
    • G06K19/044—Constructional details the record carrier having a form factor of a credit card and including a small sized disc, e.g. a CD or DVD comprising galvanic contacts for contacting an integrated circuit chip thereon
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/02—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the selection of materials, e.g. to avoid wear during transport through the machine
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/04—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the shape
    • G06K19/041—Constructional details
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/06187—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with magnetically detectable marking
    • G06K19/06196—Constructional details
    • 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
    • G11B23/03—Containers for flat record carriers
    • G11B23/0301—Details
    • G11B23/0313—Container cases
    • G11B23/0315—Materials

Definitions

  • the present invention relates generally to a memory card having an extremely high memory capacity, and particularly to such a memory card with novel outer structure that improves stiffness and magnetic properties
  • ID-1 card having standard dimensions of 85 6 ( ⁇ 12) mm in length, 53 98
  • the major storage media include a magnetic stripe on the surface of the card with 200 bytes of memory, or an electronic integrated circuit embedded on the card with up to 16 kilobytes of memory
  • ISO ID-1 dimensions may be employed Such a memory card is described in PCT published patent application WO 97/21219, assigned to the present assignee, the disclosure of which is incorporated herein by reference.
  • the WO 97/21219 memory card has a very high memory storage capacity
  • Memory cards are widely used for recording various types of information to be read by a reader when inserted into the reader Such readers are associated with personal computers and dedicated computer systems
  • the stiffness of plastic cards used in the abovementioned credit or identification purposes and the like is defined in certain international specifications, such as ISO 7810, section 8 1 1 and ISO 10373, section 5 12
  • ISO 10373, section 5 12 defines the required stiffness as follows The card is clamped along one of its short edges, leaving the rest of the card cantilevered for a length of about 83 mm A force of 0 7 N applied to the opposite, free short end should deflect the free end of the card no more than 35 mm
  • the present invention seeks to provide a novel memory card with a stiffness as defined in international specifications, such as ISO 7810, section 8 1 1 and ISO 10373, section
  • the present invention is particularly suitable for the ISO ID-1 memory card as described in WO 97/21219, although the present invention can be carried out with other memory cards as well
  • a memory card including a base sheet formed with a circular opening therethrough configured to accommodate a circular memory disc, a circular memory disc rotatably mounted within the circular opening, and a pair of cover sheets overlying opposite faces of the base sheet and rotatably mounting the circular memory disc between them, at least one of the cover sheets being formed with a window opening aligned with a Read section of the respective face of the circular memory disc, characterized by the cover sheets being constructed of a metal having a Young's modulus of at least 60,000 MPa approximately.
  • a non-structural non-metallic layer is applied on an outer surface of each cover sheet.
  • the outer surface of each cover sheet may be coated with the non-structural non-metallic layer.
  • the metal may include a spring steel, a non-magnetic steel, or spring phosphor bronze, for example.
  • the metal may include a magnetic metal, a ferritic stainless steel, a martensitic stainless steel, Mumetal or a 30% Ni-Fe alloy, for example.
  • the non-structural non-metallic layer has a design applied thereon.
  • Fig 1 is a simplified, exploded, pictorial illustration of a memory card constructed and operative in accordance with a preferred embodiment of the present invention
  • Fig 2 is a simplified sectional illustration of a cover sheet of the memory card of Fig 1, constructed and operative in accordance with a preferred embodiment of the present invention
  • Fig 1 illustrates a memory card 10 constructed and operative in accordance with a preferred embodiment of the present invention
  • Memory card 10 is preferably constructed basically as described in WO
  • the basic structure includes a base sheet 2, a memory disc 3 (preferably circular) rotatably mounted within the base sheet, a movable protective window assembly (not seen in Fig. 1), a pair of cover sheets 5 and 6 overlying the opposite faces of the base sheet 2 and the circular memory disc 3 therein, and a pair of liner discs 7 and 8 interposed between the cover sheets 5 and 6, and the respective face of the circular memory disc 3
  • the base sheet 2 is preferably made of stiff plastic material, and formed with a central circular opening 21 configured to accommodate the circular memory disc 3
  • Base sheet 2 is further formed with a lateral opening 22, including a section 23 communicating with circular opening 21, another section 24 leading to the edge of the base sheet, and a juncture section 25 between sections 23 and 24
  • the circular memory disc 3 may have the structure of a conventional magnetic diskette or floppy disc, but of smaller diameter, capable of recording and reading information from either side. It includes a central hub 31 for rotatably mounting the disc between the two cover sheets 5 and 6 Hub 31 is preferably formed with a central opening 32 for rotatably mounting the circular memory disc 3, and with a small eccentric opening 33 engageable with a rotary drive element of a card reader (not shown) for rotating the memory disc 3. Disc 3 is also preferably formed with a central opening 34 and an eccentric opening 35 both in alignment with openings 32 and 33, respectively, of its hub 31
  • the memory disc 3 may consist of flexible plastic film coated with a sensitive magnetic surface. Except for size, the magnetic discs may be identical to the magnetic discs used for memory storage in the 3 5" and 5 25" cartridges of personal computers Other memory discs could have magneto-optical surfaces or an ablative surface storage medium.
  • Each of the two outer cover sheets 5 and 6 preferably includes a central opening 51, 61, respectively, for rotatably mounting the circular memory disc 3, and a rectangular window 52, 62, respectively, laterally of the mounting opening 51, 61, so as to be alignable with a Read section of the circular memory disc 3
  • Central opening 61 of the lower cover sheet 6 is of larger diameter than central opening 51 in cover sheet 5, in order to expose eccentric opening 33 of the memory disc hub 31, and to thereby enable a rotary drive element of the reader (not shown) to be received within eccentric openings 33 in hub 31 and 35 in memory disc 3
  • the two liner discs 7 and 8 space the two cover sheets 5 and 6, from the respective faces of the circular memory disc 3
  • These liner discs which may be made of paper but are preferably made of a non-woven fabric, are formed with a central opening 71, 81, respectively, for accommodating hub 31 of the memory disc 3, and with rectangular slots 72, 82, respectively, aligned with the rectangular window openings 52, 62, respectively, in the cover sheets 5, 6, respectively, to expose the Read section of the memory disc 3 to the Read head of the reader (not shown)
  • the present inventors have determined that the overall stiffness of the memory card 10 is mostly a function of the stiffness of cover sheets 5 and 6
  • the stiffness imparted to card 10 by base sheet 2 is small and negligible due to opening 21 and cut out sections 23 and 24
  • the present inventors solve the problem of constructing the ISO ID-1 card with the requisite stiffness by constructing cover sheets 5 and 6 of a metal 28 having a Young's modulus (i e , modulus of elasticity in tension) of at least 60,000 MPa approximately
  • cover sheets 5 and 6 may be made of a hardened steel with a thickness of 0 1-0 15 mm, most preferably 0 11-0 13 mm
  • the ISO ID-1 memory card meets the stiffness requirements of ISO 7810, section 8 1 1 and ISO 10373, section 5.12
  • Preferred metals include non-magnetic steels, such as austenitic stainless steels (e g., AISI 301, 302, 303, 316, for example), manganese steel (approx
  • metal 28 may have magnetic properties in order to provide EMI/EMF protection Such an embodiment would be useful to protect the data magnetically stored on memory disc 3 from being inadvertently erased in the presence of electromagnetic fields
  • Preferred metals for such applications include ferritic stainless steels (e g , AISI 430 or 434), martensitic stainless steels (e g , AISI 431 or 440A-C), Mumetal (14% Fe, 5% Cu, 1 5% Cr, rest Ni) and 30% Ni-Fe alloys, which have relatively high magnetic permeability
  • Non-structural non-metallic layer 30 such as a plastic layer, is applied on an outer surface of metal 28, such as by coating, as seen in Fig 2
  • Non-structural non-metallic layer 30 can have a design 32 applied thereon, such as a graphic design, printed design, embossed design, silk-screened design and the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

Cette carte mémoire (10), renfermant un disque de mémoire (3), deux feuilles de couverture (5, 6) entre lesquelles le disque circulaire de mémoire (3) est monté rotatif, l'une au moins des feuilles de couverture (5, 6) possédant une fenêtre d'ouverture (52, 62) alignée avec une section lecture de la face respective du disque circulaire de mémoire (3), se caractérise par le fait que lesdites feuilles de couverture (5, 6) sont fabriquées à l'aide d'un métal dont le module d'élasticité est au moins d'environ 60 000 Mpa.
PCT/IL2000/000226 1999-04-26 2000-04-17 Carte memoire a structure externe amelioree WO2000065525A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU39856/00A AU3985600A (en) 1999-04-26 2000-04-17 Memory card with improved outer structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL129587 1999-04-26
IL12958799A IL129587A0 (en) 1999-04-26 1999-04-26 Memory card with improved outer structure

Publications (1)

Publication Number Publication Date
WO2000065525A1 true WO2000065525A1 (fr) 2000-11-02

Family

ID=11072729

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2000/000226 WO2000065525A1 (fr) 1999-04-26 2000-04-17 Carte memoire a structure externe amelioree

Country Status (3)

Country Link
AU (1) AU3985600A (fr)
IL (1) IL129587A0 (fr)
WO (1) WO2000065525A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754418A (en) * 1984-03-27 1988-06-28 Casio Computer Co., Ltd. Combined electronic calculator and credit card
US5936226A (en) * 1995-09-27 1999-08-10 Intel Corporation Mass storage device adapter for smart cards
US5988512A (en) * 1988-12-12 1999-11-23 Smartdiskette Gmbh Smart data storage device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754418A (en) * 1984-03-27 1988-06-28 Casio Computer Co., Ltd. Combined electronic calculator and credit card
US5988512A (en) * 1988-12-12 1999-11-23 Smartdiskette Gmbh Smart data storage device
US5936226A (en) * 1995-09-27 1999-08-10 Intel Corporation Mass storage device adapter for smart cards

Also Published As

Publication number Publication date
IL129587A0 (en) 2000-02-29
AU3985600A (en) 2000-11-10

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