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Storage device

A storage device and memory technology, applied in information storage, static storage, program control devices, etc., can solve cumbersome problems and achieve the effects of high convenience, high security and confidentiality

Inactive Publication Date: 2004-09-08
NEC电子公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, in order to restore the deleted application, the application provider must be entrusted to load it again, which is a cumbersome task for both the service provider and the user.

Method used

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Embodiment Construction

[0017] figure 1 It shows the internal structure of the Multi Media Card (Multi Media Card is a registered trademark of Information Technologies AG. Hereinafter, it will be abbreviated as "MMC101") to which the present invention is applied. The MMC 101 is a device that executes data read-in or read-out processing and security processing by issuing memory card commands to the externally connected host device 123 . The host device 123 corresponds to, for example, a mobile phone, a portable information terminal (PDA), a personal computer, a music playback (and recording) device, a general camera, a video camera, and an automatic cash deposit machine (ATM, etc.). The present invention is an apparatus for executing those processes in the MMC 101 according to instructions from the host device 123 when the application program of the IC card is loaded into the above-mentioned MMC 101 or the application program of the IC card is deleted from the MMC 101 . Hereinafter, an outline thereo...

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Abstract

The present invention provides a storage device for storing data, the device has an external interface, a controller, a nonvolatile memory and an IC; the controller, according to instructions from an external device connected through the external interface, from the nonvolatile A memory or an external device inputs a program for execution by the IC and writes it into the IC, and further, the controller deletes the program written into the IC according to an instruction from the external device.

Description

technical field [0001] The present invention relates to a storage device equipped with a security function and a host device that can be connected to the storage device, and to a storage device and its host device for controlling the management and execution of application software. Background technique [0002] IC cards with non-volatile memory are memory cards used in systems that require high security and confidentiality, such as credit settlement and banking. It improves user convenience by loading multiple applications on one card, or by adding a function called dynamic loading that enables applications to be loaded after the card is issued. [0003] In the installation of the application through dynamic loading, in order to prevent illegal use, it is necessary to check each other whether the application is legal or whether the target IC card is legal, and it is allowed only when both are legal. The deployment of the application. Japanese Patent Publication No. 2001-3...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B42D15/10G06F9/445G06F21/10G06F21/12G06F21/14G06K17/00G06K19/07G06K19/073G07F7/10
CPCG06Q20/35765G06Q20/341G06Q20/3552G07F7/1008E01F13/085G08G1/149
Inventor 角田元泰水岛永雅片山国弘
Owner NEC电子公司