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    • 3. 发明授权
    • External storage apparatus and control apparatus thereof, and data transmission/reception apparatus
    • 外部存储装置及其控制装置以及数据发送/接收装置
    • US06805297B2
    • 2004-10-19
    • US10107908
    • 2002-03-27
    • Takumi OkaueYoshio Kondo
    • Takumi OkaueYoshio Kondo
    • G08K1906
    • G06K19/07345G06K19/07G06K19/07732
    • The object of the present invention is to enable to prevent an erroneous erase of a data stored or writing another data on the data as well as to enable to easily switch an erroneous erase prevention switch. A command generator 35, upon reception of a register instruction for checking a state of a memory card 2 received via an S/P & P/S sequencer, sets a state of an erroneous erase prevention switch 23 in a register and transmits this register content via the S/P & P/S sequencer 31 to a host computer. According to the register content from the memory card, the host computer decides whether a write protect is ON and executes a write inhibit processing when the write protect is ON.
    • 本发明的目的是能够防止对数据存储的数据的错误擦除或者对数据写入另一个数据,并且能够容易地切换错误的擦除防止开关。一个命令发生器35,在接收到寄存器指令 用于检查经由S / P&P / P定序器接收到的存储卡2的状态,将错误防止擦除开关23的状态设置在寄存器中,并且经由S / P&P / S定序器31发送该寄存器内容 到主机。 根据来自存储卡的寄存器内容,主机决定写保护是否为ON,并且当写保护为ON时执行写禁止处理。