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Safety type memory equipment possessing enhanced compatibility, data processing device and method

A technology of data processing equipment and storage equipment, applied in the field of memory cards

Inactive Publication Date: 2004-12-01
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Security-type devices in the prior art can only use security-type memory cards, and non-security-type devices can only use non-safety-type memory cards

Method used

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  • Safety type memory equipment possessing enhanced compatibility, data processing device and method
  • Safety type memory equipment possessing enhanced compatibility, data processing device and method
  • Safety type memory equipment possessing enhanced compatibility, data processing device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Figure 1 is a block diagram showing the structure of a digital audio recorder / player (digital recorder / player) 1 according to a preferred embodiment of the present invention. Digital Audio Recorder / Player 1 using detachable memory cards (or memory sticks TM) 40 to record and reproduce digital audio signals. The recorder / player 1 may be part of an audio system with the following equipment: amplifier unit (not shown), speakers (not shown), CD player (not shown), MD recorder (not shown), tuner (not shown), show) and so on. However, it should be noted that the invention can also be applied in other audio devices. For example, recorder / player 1 may be a portable device. The present invention can also be applied in a set-top box which records digital audio data circulated via satellite data communication, digital broadcasting, or the Internet or the like. Furthermore, the present invention can also be applied to a system for recording / reproducing moving image data and sti...

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PUM

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Abstract

A memory unit (40) such as a memory card is removably attachable to a data processing unit (1) such as a digital video recorder or an audio recording / reproducing unit. The memory unit (40) includes a non-volatile memory (42), a security unit (52) for protecting the security of data stored in the non-volatile memory (42), and an interface (41) that receives control data from the data processing unit (1). The control data is either first control data for a read or write operation with respect to the non-volatile memory, or second control data (different from the first control data) for a security operation of the security unit (52). Thus, such a security-type memory unit (40) is compatible with both a security type and a non-security type data processing unit.

Description

technical field [0001] The present invention relates generally to data security, and more particularly to a storage device, such as a memory card, detachably connected to a data processing device, the storage device including data security means. Background technique [0002] In conventional non-volatile memory such as EEPROM (Electrically Erasable Programmable Read Only Memory), two transistors are used to store one bit of information. Therefore, the storage area of ​​each bit is large, which limits the improvement of the integration capability of the memory. On the other hand, such problems are eliminated in flash memory developed in recent years, in which a single transistor is used to store one bit according to the "all-bit simultaneous erase" method. It is expected that flash memory will replace conventional recording media such as magnetic disks and optical disks in a large number of applications in the near future. [0003] Flash memory-based memory cards or "memory...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/14G06F1/00G06F17/30G06F21/10G06F21/44G06F21/60G06F21/72G06F21/79G11B20/00G11B20/10G11C16/20G11C16/22
CPCG11B20/00086G06F21/79G06F21/602G06F17/30067G11C16/20G06F2221/0737G06F21/10G11B20/0021G11B20/00528G11B20/10G11B20/00246G06F21/445G06F21/72G06F2221/2121G06F2221/2137G11C2207/16G11B2020/10546G11C16/22G06F2221/2107G06F16/10G06F21/16G06F12/14
Inventor 冈上拓己木原信之横田哲平
Owner SONY CORP