EP2291752A1 - Dispositif de stockage de données à multiples protocoles pour précharger des données - Google Patents

Dispositif de stockage de données à multiples protocoles pour précharger des données

Info

Publication number
EP2291752A1
EP2291752A1 EP08763629A EP08763629A EP2291752A1 EP 2291752 A1 EP2291752 A1 EP 2291752A1 EP 08763629 A EP08763629 A EP 08763629A EP 08763629 A EP08763629 A EP 08763629A EP 2291752 A1 EP2291752 A1 EP 2291752A1
Authority
EP
European Patent Office
Prior art keywords
protocol
subset
storage device
data storage
data
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.)
Withdrawn
Application number
EP08763629A
Other languages
German (de)
English (en)
Inventor
Eitan Mardiks
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Western Digital Israel Ltd
Original Assignee
SanDisk IL 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 SanDisk IL Ltd filed Critical SanDisk IL Ltd
Publication of EP2291752A1 publication Critical patent/EP2291752A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4063—Device-to-bus coupling
    • G06F13/4068—Electrical coupling

Definitions

  • methods and systems to preload data on a data storage device are possible, and particularly, methods and systems may allow a manufacturer to produce a device (for example a smart card) and load data (for example identification information) before distribution to the consumer.
  • a manufacturer for example a smart card
  • load data for example identification information
  • Flash memory devices and particularly smart cards are very well known in the art of computer engineering.
  • a smart card contains a secure microprocessor in a credit card sized package.
  • Smart cards are designed to comply with published standards so that applications and card reader devices can be designed independently of the card.
  • many smart cards are designed to comply with the ISO/IEC 7816 series of standards that define the physical shape of the smart card, the communications protocols and the positions and shapes of the electrical contacts for each protocol, the electrical power supplied to the card and the position of the electrical contacts to which the power is supplied, and the functionality and the format of the commands sent to the card and the response returned by the card.
  • Smart cards are often used for the purpose of user identification.
  • the user identification may be performed using personal information (for example an Electronic Passport or a pass card for an electronic gate may store personalized biometric data describing fingerprints or iris or facial pictures to positively identify a user to a security agent or an electronic lock) or non-personal information (for example a Subscriber Identity Module (SIM) card identifies a subscriber of a cellular phone network).
  • SIM Subscriber Identity Module
  • Smart cards also serve to track financial information, for example a smart credit/debit card stores a user's credit information and tracks purchases making it possible for a merchant to approve a sale without contacting the credit provider.
  • a smart phone card may track prepaid telephone calls and remaining credit for a user.
  • Smart cards are also used for encryption and decryption of signals; such a smart card may serve as a key allowing a user to receive privileged communications or to unlock functionality of proprietary software from a network.
  • smart cards also contain program memory for applications. These preloaded programs are generally stored in Read Only Memory (ROM — for example mask programmable ROM or EPROM or NOR-type flash memory) that is not accessible to a user of the card.
  • ROM Read Only Memory
  • EPROM EPROM
  • a SIM card generally belongs to a service provider of a cellular network.
  • the service provider supplies the card to a subscriber of the network who is the end user of the SIM card.
  • the card then identifies the subscriber's communication device to the network. Based on this identification the service provider supplies network services and bills the user.
  • Fabrication of the card includes constructing the physical card (e.g. processor, memory, connectors) and programming the card with a basic operating mode (for example one or more data transfer protocols and other basic functions that are sometimes referred to in as Basic Input/Output Systems BIOS).
  • a basic operating mode for example one or more data transfer protocols and other basic functions that are sometimes referred to in as Basic Input/Output Systems BIOS.
  • an operating mode of the card is according to a published standard, for example ISO 7816.
  • the customization may also involve two steps: 1) customization of the SIM part of the card and 2) uploading data to the mass storage area of the card.
  • a single manufacturer may carry out all of the manufacturing steps. It is also possible to divide the manufacturing between a card producer, which fabricates the card and customizes the SIM part of the card, and one or more agents of the MNO, which upload (
  • Various methods and systems to preload data to a data storage device are provided herein, and particularly, methods and systems employing a high speed data transfer protocol in a manufacturing mode, which can increase production efficiency by speeding preloading of data to a device.
  • An embodiment of a system for storing a datum may include a data storage device having N externally accessible electrical contacts and a manufacturer device configured for uploading of the datum to the data storage device and at least one integrated circuit chip configured for implementing a user mode and a manufacturer mode.
  • the user mode may be used for transferring data between a host device of an end user and the data storage device.
  • the user mode may include a first protocol for transferring the data, and the first protocol may employ a first subset of the N externally accessible electrical contacts.
  • the manufacturer mode may include a second protocol for uploading the datum from the manufacturer device to the data storage device.
  • the second protocol may employ a second subset of the N externally accessible electrical contacts.
  • the second subset may contain at least one common element contained in both the first subset and the second subset.
  • the second subset may also contain at least one exclusive element not contained in the first subset.
  • the first protocol may employ a first subset of the N externally accessible electrical contacts for making a communication connection to the host.
  • An example of the at least one common element contained in both the first subset and the second subset, and an example of the at least one exclusive element contained in the second subset but not in the first subset are given as follows.
  • the first protocol is a USB protocol and the second protocol is a custom protocol similar to a USB protocol but using an external clock
  • the CMD contact employed for transferring commands and the differential data contacts (IC_DP and IC_DM) employed for transferring data could be common elements to both protocols while the CLK contact used to transfer the external clock timing information could be an exclusive element employed only by the second protocol.
  • the user mode may further include a third protocol for transferring data between the host and the data storage device.
  • the third protocol may employ a third subset of the N externally accessible electrical contacts.
  • the third subset may contain the exclusive element contained by the second subset but not by the first subset, and there may be at least one element of the second subset that is not contained in the third subset.
  • the clock contact CLK-MMC and the command contact CMD and the first data line contact DATO of the third protocol are all exclusive elements (contacts) utilized by the second and third protocol but not by the first protocol; whereas the DATl, DAT2 and DAT3 contacts of the second protocol are common elements of the first and second protocols since the DATl, DAT2, and DAT3 contacts are also used by the first protocol as RST, CLK-ISO and I/O contacts, respectively.
  • the power and ground contacts VSS 5V and GRND are common elements used by all of the protocols.
  • the first subset may contain exactly K elements (each element being an externally accessible conductive contact) and the second subset may contain exactly M elements and the third subset may contain exactly L elements where L, K, M and N are all integers greater than zero.
  • L may be less than or equal to K
  • K may be less than M
  • M may be less than or equal to N.
  • the first protocol may be an ISO protocol (compliant with the published ISO 7816 standard employing five externally accessible contacts for connection to the host and for power) and thus the first subset may contain exactly five elements.
  • the third protocol may be a single data line SD/MMC protocol employing five externally accessible contacts (thus the third subset may also contain five elements).
  • the second protocol may be a custom protocol (for example a USB-like protocol using an external clock or multiple data bits) or the second protocol may be a multi data line SD/MMC protocol using B data lines (and thus the second subset may contain 6 or 8 elements (for two or four data lines respectively)).
  • the first protocol may be compliant with published USB standards and thus the first subset may contain exactly five elements.
  • the first protocol may be compliant with a published standard and the second protocol may be a custom protocol.
  • the integrated circuit chip may be further configured to track financial information, identify a subscriber to a service, provide a decryption key, decrypt a signal or identify a user to a security agent or security device.
  • the data storage device may include subscriber identification information for identifying a user account to a phone network; or if the data storage device is an electronic passport or an identity card, the device may include biometric data about the user; or if the data storage device is a bank card, the device may include account information and biometric information.
  • the data storage device may be a standard SIM card or a high capacity SIM card (a high capacity SIM card is a SIM card that in addition to the legacy functionality implements an additional faster protocol (e.g. USB) for accessing a storage area).
  • a high capacity SIM card is a SIM card that in addition to the legacy functionality implements an additional faster protocol (e.g. USB) for accessing a storage area).
  • the integrated circuit chip may be configured to facilitate uploading of the datum by a manufacturer at a higher rate than a maximum data transfer rate of the user mode. For example, if the user mode protocol is SD/MMC compliant and uses one data line while the manufacturer mode protocol is SD/MMC compliant and uses four data lines, then the uploading of the datum can be at a rate approximately four times the maximum data transfer rate of the user mode.
  • the integrated circuit chip may be a component of the data storage device.
  • An embodiment of a method of customizing a data storage device having N externally accessible electrical contacts may include the step of providing a user mode.
  • the user mode may include a first protocol employing a first subset containing K elements (each element being one of the N externally accessible electrical contacts) for transferring data between the data storage device and a host.
  • the embodiment of a method may also contain the step of initiating the data storage device to operate in a manufacturing mode having a second protocol employing a second subset containing M of the N externally accessible electrical contacts.
  • the second subset may contain at least one common element contained in both the first subset and the second subset.
  • the said second subset may also contain at least one exclusive element not contained in the first subset.
  • the method may also include uploading of a datum by a manufacturer to the data storage device via the manufacturer mode
  • An embodiment of a method for customizing a data storage device may further include the step of disabling the manufacturer mode after uploading the preloaded data.
  • the manufacturing mode may be made inaccessible to an end user. For example, use of the manufacturer mode could be blocked to anyone except an authorized manufacturer. Thus, a hacker would be prevented from using the manufacturing mode as back door to breach security measures applied to the user mode protocols.
  • disabling the manufacturer mode may include one or more of the following actions: shutting down the data storage device, resetting the data storage device, temporarily disabling the manufacturer mode, permanently disabling the manufacturer mode, changing the default mode of the data storage device or imparting a command to the data storage device.
  • the rate of uploading the data to be preloaded may be faster than the maximum rate of data transfer in the user mode.
  • the user mode may further include a third protocol for transferring data between the device and the host.
  • the third protocol may employ a third subset of the N externally accessible electrical contacts including the exclusive element (which is contained in the first subset but not in the second subset). There may also be at least one element that is contained in the second subset but that is not contained in the third subset.
  • the third subset may contain exactly L elements wherein 0 ⁇ L ⁇ K ⁇ M ⁇ N.
  • the second protocol may be a custom protocol or the second protocol may be compliant with SD/MMC standards employing B data lines where B>2.
  • the first protocol may be a USB protocol while the second protocol may be a custom protocol or the second protocol may be a protocol compliant to SD/MMC standards employing B data lines where B>2.
  • the first protocol may be compliant with a published standard and the second protocol may be a custom protocol.
  • the storage device may perform a further function, for example tracking financial information, identifying a user, identifying a subscriber to a service, providing a decryption key, or decrypting a signal.
  • An embodiment of a data storage device may include a plurality of N externally accessible electrical contacts and at least one integrated circuit chip.
  • the integrated circuit chip may be configured for implementing a user mode for transferring data between a host device of a user and the data storage device.
  • the user mode may include a first protocol for transferring the data between the host and the data storage device.
  • the first protocol may employ a first subset of the N externally accessible electrical contacts.
  • the integrated circuit chip may also be configured for implementing a manufacturer mode for uploading a datum from a manufacturer device to the data storage device.
  • the manufacturer mode may include a second protocol employing a second subset of the N externally accessible electrical contacts.
  • the second subset may contain at least one common element contained in both the first subset the second subset, and the second subset may also contain at least one exclusive element contained in the second subset but not contained in the first subset.
  • the user mode may also include a third protocol for transferring data.
  • the third protocol may employ a third subset of the N externally accessible electrical contacts.
  • the third subset may contain an exclusive element that is contained in the second subset (employed in the manufacturer mode) but is not contained in the first subset (which is employed by the first protocol of the user mode).
  • the second subset (of contacts employed by a manufacturer mode protocol) may contain at least one element that is not contained in the third subset.
  • the first subset (of contacts used in the first protocol of the user mode) may contain exactly K elements
  • the second subset (of contacts used in the manufacturer mode) may contain exactly M elements
  • the third subset (of contacts used in the third protocol of the user mode) may contain exactly L elements
  • L, K, M and N may all be integers greater than zero.
  • L may be less than or equal to K
  • K may be less than M
  • M may be less than or equal to N.
  • the first (user mode) protocol may be a USB protocol and the second (manufacturer mode) protocol may be a custom protocol or a protocol compliant with SD/MMC standards having B data bits where B is an integer greater or equal to 2.
  • the first (user mode) protocol may be a standard published protocol and the second (manufacturer mode) protocol may be a custom protocol.
  • the integrated circuit chip may be further configured to track financial information, identify a subscriber to a service, provide a decryption key, decrypt a signal or identify a user.
  • the data storage device may be configured to function as a SIM card.
  • the data storage device may have an external physical shape compliant to a published standard form.
  • the integrated circuit chip may be configured to facilitate uploading of a datum to be preloaded by a manufacturer at a higher rate the maximum data transfer rate available to a user by means of the user mode.
  • o Configure - Configuring a device to serve a function may be defined as supplying hardware or software necessary and sufficient for the device to serve the function.
  • o Disable - Disabling a function of a device may be defined as placing the device into a state wherein the device cannot perform a particular function.
  • a function may be disabled temporarily (e.g. until an action is taken (e.g. a command is given, the device is restarted, or the device is reinitiated) to re-enable the function) or permanently (e.g. such that, for the device to subsequently perform the function, it would be necessary to reconfigure the device).
  • disabling a function may be achieved by reconfiguring the device so that the device will no longer perform the function.
  • o Initiate - Initiating a device may be defined as performing an action necessary and sufficient to place a device into a state wherein the device can perform a particular function (e.g. implementing a certain mode). Initiation may be as simple as powering up a card to implement a default mode. Initiation may also include specifying a mode of operation or protocol (for example, by sending an initiation signal to the device). o Manufacturer - The word manufacturer may be defined broadly to include any actor who prepares an item for use before distribution to an end user. I inserted new paragraph here; what follows is not part of the definition.
  • the card may include a chip made by a chipmaker.
  • the chip is sent to a smart card manufacturer who builds the card and then customizes the card and pre-loads data into the card according to the specifications of a mobile network operator (MNO).
  • MNO mobile network operator
  • the MNO then distributes the card to subscribers.
  • the chipmaker and the smart card manufacturer may both be described as manufacturers while the subscriber may be described as a user or an end user.
  • a smart card manufacturer may send the card to an agent of the MNO who preloads the data (or additional data) to the card before distribution to customers. Then the agent of the MNO would also be considered a manufacturer of the card. Manufacturing arrangements other than the above are also possible, as would be appreciated by one of skill in the art in view of the description herein.
  • Figure 1 is a drawing of a multi-protocol SIM card data storage device, according to an embodiment, the device shown as being installed in a host device;
  • Figure 2 illustrates a system for a manufacturer to preload data into a device such as that shown in Fig. 1.
  • Figure 3 a is a table illustrating a contact structure of a multi-protocol SIM card of a device such as that shown in Fig. 1 ;
  • Figure 3b is a table illustrating an alternative contact structure of a multi-protocol SIM card of a device such as that shown in Fig. 1 ;
  • Figure 4 is a table illustrating another alternative contact structure for a multi-protocol
  • SIM card of a device such as that shown in Fig. 1 and Figure 5 is a flow chart illustrating a method of manufacturing a multi-protocol SIM card of a device such as that shown in Fig. 1, including preloading the SIM card with data.
  • FIG 1 is a drawing of a (subscriber identification module) SIM card 100, according to an embodiment.
  • SIM card 100 is inserted into a host 99, which is in this case a cellular (GSM) telephone having a view screen 98.
  • host 99 may be a PDA, smartphone or other suitable device, as will be appreciated by one of ordinary skill in the art.
  • the host may be a personal computer, cash register, DVB (Digital Video Broadcast) receiver or other suitable device, as will be appreciated by one of ordinary skill in the art.
  • DVB Digital Video Broadcast
  • SIM card 100 has eight externally accessible conductive contacts llla-h for communication and power supply. (As noted below, it is possible for a multi-protocol smartcard to have more than eight externally accessible conductive contacts.) According to ISO standards, contact Cl Ilia is used to supply power (VSS 5V) to the card while contact C5 11 Ie is the ground (GRND) contact, as shown in Fig. 3a. Communication between host 99 and SIM card 100 is through a set of standard protocols that are collectively called a user mode.
  • the main legacy protocol used for subscriber identification is the ISO protocol, which operates according to published standard ISO 7816.
  • the user mode of SIM card 100 includes an ISO protocol.
  • RST reset
  • a processor 120 loads data from an integrated circuit chip 132a, which contains instructions for the ISO protocol.
  • contact C2 111b is used as a reset (RST) line
  • contact C3 111c is used as a clock (CLK-ISO) line
  • contact C7 11 Ig is used as an input output (I/O) line for data transfer (uploading or downloading) (see Figure 3a).
  • Host 99 uses the ISO protocol to communicate with SIM card 100 for supplying user identification information to a mobile network. Therefore, when host 99 is using the legacy ISO protocol, it is desirable that access to the ISO protocol (including contacts C2 111b, C3 111c and C7 lllg) not be interrupted (interruption may occur for example if the ISO pins are assigned (even temporarily) to an alternative protocol during the user mode).
  • data is transferred between SIM card 100 and host 99 synchronously using I/O contact C7 lllg with timing signals transmitted through CLK-ISO contact C3 111c.
  • a single data line SD/MMC protocol can also be run for data transfer.
  • the signal for example, a proprietary command
  • processor 120 loads data from an integrated circuit chip 132b, which contains instructions for the SD/MMC protocol.
  • a clock signal (CLK-MMC) is communicated through contact C6 11 If, a command (CMD) line through contact C8 111b. and a single data line (DATO) through contact C4 llld.
  • the one data line SD/MMC protocol leaves contacts C2 111b, C3 111c and C7 lllg free for subscriber identification information transfers using the ISO protocol. Because the ISO protocol leaves only three free contacts (since two of the eight contacts are taken for power and ground), in the embodiment of Figure 1 , a protocol requiring more than three communication lines cannot be run simultaneously with the ISO protocol and cannot be run in the user mode on a legacy device such as host 99.
  • Processor 120 is also connected to a non-volatile memory 130, which serves for storing data and for storing applications for execution by processor 120 and also by host 99.
  • SIM card 100 may be a new generation SIM card with significant internal memory.
  • non- volatile memory 130 may include, e.g., 500 Mbytes of data space.
  • SIM card 100 is shown as being attached to a manufacturer device 200.
  • manufacturer device 200 is, e.g., a computer based production machine, manufacturing station or the like with an interface (not shown) for writing to a SIM card.
  • a manufacturer As discussed above, many manufacturers may be involved in producing a card. For example, a chipmaker, a smart card manufacturer and an agent of a MNO who customizes a card may each be deemed to fall under the rubric of a manufacturer.
  • the MNO may perform multiple functions (for example, a single entity may make the chip, manufacture and customize the card, and also load customized data for the MNO)), e.g. an agent of the MNO, preloads SIM card 100 with data. Subsequently, the MNO, for example, distributes SIM card 100 to a subscriber.
  • Device 200 is used to upload the data and software that is to be preloaded from manufacturer device 200 onto SIM card 100 (and particularly into non- volatile memory 130 of SIM card 100).
  • the preloaded content may include network settings, games or audio-visual content, and advanced software for handling audiovisual content, and/or the like, according to the intended use or the requirements of the card distributor (in particular, the data to be uploaded may be specified by the MNO).
  • SIM card 100 is configured to be employed in a manufacturer mode for data transfer.
  • the ISO protocol is temporarily disabled and the three ISO contacts (C2 111b, C3 111c, and C7 lllg) are used as parallel data lines for the SD/MMC protocol (in addition to the single data line (DATO) through contact C4 Hid, thus giving four data lines for SD/MMC transfer), thereby allowing a data transfer rate of four times the data transfer rate of the user mode.
  • processor 120 loads data from second integrated circuit chip 132b, which contains instructions for the SD/MMC protocol.
  • the manufacturer mode may include a custom protocol for highspeed data upload.
  • a custom protocol may be a protocol similar to a USB protocol except that it uses multiple data lines.
  • a custom protocol may be a similar to a high speed USB protocol but also having an extra contact for an external clock or other suitable protocol, as will be appreciated by one of ordinary skill in the art in view of this description.
  • a custom protocol based on high speed USB with an external clock may use 6 contacts, and a USB protocol with an extra set of differential data lines may use 7 contacts.
  • a custom protocol may include multiple differential data lines and also an external clock and employ 8 contacts.
  • Alternative embodiments may include more than 8 contacts and thus employ more than four contacts for data lines. It will be understood that such a custom protocol would not be accessible to a user who makes use of a standard host device.
  • FIG 3a illustrates the allocation of contacts for the user mode and manufacturer mode of SIM card 100, according to one embodiment.
  • the power source is 5 V supplied on contact Cl Ilia and ground is supplied on contact C5 11 Ie.
  • the ISO and the single data line SD/MMC protocols are both active.
  • the user mode may include a USB protocol and an ISO compatible protocol, i.e., an ISO protocol may be implemented over USB (implementing the USB ICCD class).
  • the ISO protocol uses contact C2 111b for restart (RST), contact C3 111c for clock (CLK-ISO), and contact C7 11 Ig for data input/output (I/O).
  • the one data line SD/MMC protocol uses contact C4 11 Id (DATO) for data transfer, contact C6 11 If for clock signals (CLK-MMC) and contact C8 11 Ih for a command line (CMD).
  • DATO contact C4 11 Id
  • the four data line SD/MMC protocol uses contact C4 11 Id (DATO) for data transfer, contact C6 11 If for clock signals (CLK-MMC) and contact C 8 11 Ih for a command line (CMD), as in the user mode but, in contrast to the user mode, in the manufacturer mode, the SD/MMC protocol also employs contacts C2 111b, C3 111c and C7 11 Ig for parallel data lines DATl, DAT2 and DAT3, thereby allowing data transfer at four times the rate of the user mode assuming the same clock rate.
  • DATO contact C4 11 Id
  • C6 11 If for clock signals (CLK-MMC) and contact C 8 11 Ih for a command line (CMD), as in the user mode but, in contrast to the user mode, in the manufacturer mode, the SD/MMC protocol also employs contacts C2 111b, C3 111c and C7 11 Ig for parallel data lines DATl, DAT2 and DAT3, thereby allowing data transfer at four times the rate of
  • the ISO protocol is called the first (user mode) protocol
  • the multi data line SD/MMC protocol is called the second (manufacturing mode) protocol
  • the one data line SD/MMC protocol is called the third (user mode) protocol.
  • Contacts C2 111b, C3 111c and C7 lllg are common to both the ISO (first, user mode) protocol and the multi data line SD/MMC (second, manufacturer mode) protocol but are not employed by the single data line SD/MMC (third, user mode) protocol.
  • Contacts C4 llld, C6 lllf and C8 lllh are employed exclusively by the second (manufacturer mode multi data line SD/MMC) and third (user mode single data line SD/MMC) protocols.
  • FIG 3b illustrates an alternative allocation of contacts of an eight contact SIM card.
  • a USB protocol is used to transfer subscriber identification information in the user mode.
  • the USB protocol requires a single contact for a command line and two pins for differential data transfer but does not require an external clock.
  • the USB protocol is called the first (user mode) protocol.
  • the USB protocol employs five contacts (three contacts C2 CMD, C3 IC DP and C7 IC DM for data and two contacts Cl VSS 5 V and C5 GRND for power and ground). In an eight contact card this leaves only three free data contacts. . Current standards require that for compatibility with certain legacy devices (e.g. handsets that don't support the USB protocol) these three contacts be reserved for the ISO protocol (for example C4 RST, C6 CLK-ISO and C8 I/O). Thus, in the embodiment of Figure 3b, the ISO protocol is called the third (user mode) protocol. Thus, when the eight contact SIM card of Figure 3 b is in use with a host (in the user mode), transferring data must be according to the ISO or USB protocol.
  • SIM card On a SIM card that lacks a high speed internal clock and crystal oscillator this limits a maximum data transfer rate in the user mode to approximately lMbyte/s. Faster data uploading can be achieved if more than three data contacts are used for parallel data transfer (for example multi data line SD/MMC as described above). Therefore to achieve high-speed data communication the SIM card can be programmed to operate in a manufacturer mode in which the ISO and USB protocols are temporarily disabled and all of the available contacts are assigned to a fast protocol (multi data line SD/MMC or a custom protocol as described above).
  • the manufacturer mode could use the extra contacts for even more parallel data lines resulting in a higher data-uploading rate.
  • FIG 4 illustrates the allocation of contacts for the user mode and manufacturer mode of an alternative embodiment of a multimode SIM card.
  • the user mode of the SIM card of the embodiment of Figure 4 includes a USB (first) protocol according to published standards and employs contact Cl for power (VSS), contact C3 for a first differential data line (IC DP), contact C4 for a second differential data line (IC DM), contact C5 for ground (GRND), and contact C8 for a command line (CMD).
  • Contacts C2, C6 and C7 are idle in the user mode.
  • the SIM card of the embodiment of Figure 4 employs a custom (second) protocol for higher rate data uploading.
  • second protocol there are a maximum of two data pins.
  • High speed USB uses the same two data pins and a faster (non-synchronous) clock, but this requires an expensive crystal oscillator on the memory card and is considered uneconomical for SIM cards.
  • the manufacturer utilizes high speed custom (second) protocol by adding two parallel data lines (employing contacts C2 and C7 for DATO and DATl lines, respectively) to the slow USB protocol, thereby doubling the upload speed.
  • an external clock using contact C6 as a clock (CLK) contact can be added to the custom (second, manufacturer mode) protocol allowing the card to use synchronous communication at a rate determined by a high-speed clock of the host device.
  • contacts Cl, C3, C4, C5 and C8 are common contacts used by both the first, user mode protocol and the second, manufacturer mode protocol, while contacts C2, C6 and C7 are exclusive contacts used only by the second, manufacturer mode protocol.
  • FIG. 5 is a flow chart illustrating an example method of the operation of a multiprotocol data storage device (e.g., a multi-protocol SIM card).
  • the multi-protocol data storage device has two modes of operation, a manufacturer mode 517 and a user mode 523.
  • the device is powered up and an initiation signal is sent to the device.
  • operation proceeds according to one or the other of the two modes depending on what kind of initiation signal has been sent, i.e., a user-mode initiation signal ("Y") or not ("N").
  • a user-mode initiation signal is a standard initiation signal, e.g., compliant with accepted standards for a single mode SIM card, while an example of a non-user-mode signal is a proprietary initiation signal.
  • the device enters manufacturer mode 517.
  • the device starts 518 a high-speed (e.g. custom) protocol.
  • the device may be configured to enter a standard protocol negotiation sequence upon power up 510.
  • a protocol included in user mode 523 e.g. a standard ISO or USB protocol
  • a protocol not included in user mode 523 e.g. a multi-data-pin SD/MMC protocol or custom protocol
  • N non-user-mode initiation signal
  • the default mode of the data storage device may be set to manufacturing mode during fabrication of the device.
  • powering up 510 the device initiates the device into manufacturing mode 517, and steps 510 and 512 may be deemed to be conflated into a single step.
  • the manufacturer mode may be disabled by changing the default mode to user mode 523.
  • Disabling 522 manufacturer mode 517 may be temporary or permanent and disabling 522 manufacturer mode 517 may be performed in any of a variety of ways. For example, temporarily disabling 522 manufacturer mode 517 may be effected by (the manufacturer) shutting down the data storage device (in this case, steps 522 and 540 may be deemed to be conflated into a single step). Alternatively, temporarily disabling 522 may consist of resetting the device so that the device must be reinitiated in order to operate in manufacturer mode 517.
  • the disabling 522 may consist of (the manufacturer) changing the default mode of the device to user mode 523.
  • the mode of the device can be specified by a command upon initiation
  • changing the default mode of the device to user mode 523 would be deemed as temporarily disabling manufacturer mode 517.
  • permanently disabling manufacturer mode 517 by permanently disabling manufacturer mode 517 the device subsequently performs only in user mode 523, as if it had no manufacturer mode 517. Furthermore, permanently disabling manufacturer mode 517 prevents an unauthorized user from using manufacturer mode 517 as a "back door" for unauthorized accessing of the device.
  • the data storage device may be configured so that upon receiving a proprietary command, manufacture mode 517 is disabled (either permanently or temporarily). In such an embodiment disabling 5221 may include imparting a command to the storage device at the end of customization.
  • step 522 the device is powered down 540.
  • powering down 540 is the last step in customizing, and hence in manufacturing, the device.
  • the finished device is distributed to a user who will use the device in a host device.
  • the device enters user mode 523.
  • one or more protocols are activated 534 (for example, slow USB, ISO or one data line SD/MMC). Then the host device may transfer 536 data and subscriber information to or from the data storage device.

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  • Engineering & Computer Science (AREA)
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  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

L'invention porte sur un système et un procédé qui utilisent de multiples modes de communication pour un téléversement rapide d'une donnée préchargée d'un dispositif de fabrication à un dispositif de stockage de données sur des contacts externes existants du dispositif de stockage de données. De préférence, le dispositif est une carte SIM à capacité élevée et un mode utilisateur permet une communication par des protocoles standard tels que ISO, SD/MMC et USB, tandis qu'un mode fabricant applique un protocole SC/MMC à multiples lignes de données ou un protocole personnalisé pour un téléversement de données à vitesse élevée.
EP08763629A 2008-06-26 2008-06-26 Dispositif de stockage de données à multiples protocoles pour précharger des données Withdrawn EP2291752A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IL2008/000872 WO2009156977A1 (fr) 2008-06-26 2008-06-26 Dispositif de stockage de données à multiples protocoles pour précharger des données

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EP2291752A1 true EP2291752A1 (fr) 2011-03-09

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EP08763629A Withdrawn EP2291752A1 (fr) 2008-06-26 2008-06-26 Dispositif de stockage de données à multiples protocoles pour précharger des données

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EP (1) EP2291752A1 (fr)
KR (1) KR20110029132A (fr)
CN (1) CN102112975A (fr)
WO (1) WO2009156977A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN109948767B (zh) 2018-02-01 2024-08-09 华为技术有限公司 存储卡和终端
CN111414125A (zh) * 2018-12-18 2020-07-14 华为技术有限公司 一种存储设备的操作方法及存储设备

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
US5594874A (en) * 1993-09-30 1997-01-14 Cirrus Logic, Inc. Automatic bus setting, sensing and switching interface unit
CN100511196C (zh) * 2004-02-29 2009-07-08 深圳市朗科科技有限公司 数据处理芯片及其存储装置
KR100579053B1 (ko) * 2004-08-26 2006-05-12 삼성전자주식회사 스마트 카드와 메모리 카드간의 멀티 인터페이스 방법 및멀티 인터페이스 카드

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WO2009156977A1 (fr) 2009-12-30
KR20110029132A (ko) 2011-03-22
CN102112975A (zh) 2011-06-29

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