Nonvolatile semiconductor storage device
    41.
    发明专利
    Nonvolatile semiconductor storage device 审中-公开
    非易失性半导体存储器件

    公开(公告)号:JP2005317127A

    公开(公告)日:2005-11-10

    申请号:JP2004134486

    申请日:2004-04-28

    IPC分类号: G11C16/02 G11C11/34 G11C16/22

    CPC分类号: G11C16/22

    摘要: PROBLEM TO BE SOLVED: To solve problems, in a nonvolatile semiconductor storage device such as a flash memory loaded on, or connected to, a conventional CPU, like protection caused by issue of wrong command due to noise and the CPU runaway due to software, and shift to the unexpected mode resulting from the issue of the wrong command such as the shift to the mode to which a user is not allowed. SOLUTION: By arranging a command decoder for receiving the command, a control circuit for controlling various modes such as rewriting and readout, and a signal for controlling whether specific commands such as protection and a test mode externally inputted are accepted or not, the shift to the unexpected mode resulting from the issue of the wrong command can be prevented, such as the protection caused by the CPU runaway due to the software and erroneous command issue due to the noise, and the shift to the mode to which the user is not allowed. COPYRIGHT: (C)2006,JPO&NCIPI

    摘要翻译: 要解决的问题:为了解决问题,在装载或连接到常规CPU的闪速存储器这样的非易失性半导体存储装置中,由于由噪声引起的错误命令和CPU失控导致的保护 并且转移到由于错误命令的发生而导致的意外模式,例如转移到不允许用户的模式。 解决方案:通过布置用于接收命令的命令解码器,用于控制诸如重写和读出的各种模式的控制电路以及用于控制是否具体外部输入的诸如保护和测试模式的特定命令的信号, 可以防止由错误命令引起的意外模式的转移,例如由于由于噪声而导致的软件和错误命令发生的CPU失控导致的保护,并且转移到用户的模式 不允许。 版权所有(C)2006,JPO&NCIPI

    Memory system having flash memory that includes otp block
    42.
    发明专利
    Memory system having flash memory that includes otp block 审中-公开
    具有包含OTP块的闪存存储器的存储器系统

    公开(公告)号:JP2005149715A

    公开(公告)日:2005-06-09

    申请号:JP2004329709

    申请日:2004-11-12

    CPC分类号: G11C16/22 G11C2216/26

    摘要: PROBLEM TO BE SOLVED: To provide a memory system having a flash memory device that includes an OTP block. SOLUTION: The memory system includes the flash memory device and an interface device. The flash memory device includes an OTP block into which protective data information is stored in a prescribed region. The interface device includes a register which stores OTP lock state information indicating whether the OTP block is programmed or not. When a program/erase command is applied from the external in an OTP mode, the interface device discriminates whether the OTP lock state information indicates the OTP block is programmed or not. When the OTP lock state information indicates that the OTP block is programmed, the interface device shuts off accesses (including the program/erasing operations) to the OTP block from the external. COPYRIGHT: (C)2005,JPO&NCIPI

    摘要翻译: 要解决的问题:提供一种具有包括OTP块的闪存设备的存储器系统。

    解决方案:存储系统包括闪存设备和接口设备。 闪存装置包括在规定区域内保存有数据信息的OTP块。 接口装置包括存储指示OTP块是否被编程的OTP锁定状态信息的寄存器。 当在OTP模式下从外部应用编程/擦除命令时,接口设备判断OTP锁定状态信息是否指示OTP块被编程。 当OTP锁定状态信息指示OTP块被编程时,接口设备会从外部关闭OTP块的访问(包括程序/擦除操作)。 版权所有(C)2005,JPO&NCIPI

    Controller
    44.
    发明专利
    Controller 审中-公开
    CONTROLLER

    公开(公告)号:JP2005056263A

    公开(公告)日:2005-03-03

    申请号:JP2003287964

    申请日:2003-08-06

    发明人: KAMATA YOJI

    CPC分类号: G11C7/24 G06F21/79 G11C16/22

    摘要: PROBLEM TO BE SOLVED: To make it easy to decide on legitimacy by causing a diagnostic device to quickly display a CVN (Calibration Verification Number). SOLUTION: This controller 1 includes a flash memory 5 made rewritable for storing programs or data, and a CVN computing means for computing CVN values that guarantee the contents thereof. The controller has an EEPROM 6 made rewritable for storing computed CVN storage values. When a determination is made that no rewrites were made on the flash memory 5, the computed CVN storage values stored in the EEPROM 6 are outputted to compute a CVN and the computation result is outputted; when there is a rewrite on the flash memory 5, the computation result is outputted after computation of the CVN is complete. COPYRIGHT: (C)2005,JPO&NCIPI

    摘要翻译: 要解决的问题:通过使诊断设备快速显示CVN(校准验证码),可以轻松决定合法性。 解决方案:该控制器1包括可重写用于存储程序或数据的闪存5和用于计算保证其内容的CVN值的CVN计算装置。 控制器具有可重写的用于存储计算出的CVN存储值的EEPROM 6。 当确定在闪速存储器5上没有重写时,输出存储在EEPROM 6中的计算出的CVN存储值以计算CVN并输出计算结果; 当在闪速存储器5上存在重写时,在CVN的计算完成之后输出计算结果。 版权所有(C)2005,JPO&NCIPI

    Electronic controller for automobile
    47.
    发明专利

    公开(公告)号:JP2004051056A

    公开(公告)日:2004-02-19

    申请号:JP2002214853

    申请日:2002-07-24

    摘要: PROBLEM TO BE SOLVED: To provide an electronic controller for an automobile determining the propriety of rewriting execution without leaking a key word and a password code and without need for an external equipment side demanding rewriting to grasp them. SOLUTION: This electronic controller is provided with a nonvolatile memory 11 storing a control program for controlling the automobile and control data, a rewriting means 13 rewriting contents of the nonvolatile memory in accordance with a demand from the outside, and a rewriting execution possible/impossible determining means 14 preparing the password code determined by only one meaning according to the rule determined in advance from distinguishing data determined when a rewriting demand is given and determining whether rewriting execution is possible or not based on the results of check of a password code prepared in the same way on the outside by sending the distinguishing data and returned and the password code. COPYRIGHT: (C)2004,JPO

    Portable storage medium provided with access restriction circuit

    公开(公告)号:JP2004021956A

    公开(公告)日:2004-01-22

    申请号:JP2002208942

    申请日:2002-06-12

    发明人: ICHIKAWA SHINGO

    摘要: PROBLEM TO BE SOLVED: To provide a portable storage medium, such as a memory stick or a flush memory wherein the stored data cannnot be accessed by another person if a personal identification number inputted from outside is not correct, and to provide an adaptor of a storage medium to be connected to a micro media such as a card smart media, an SD card. SOLUTION: In a portable storage medium provided with an access restriction circuit, a personal identification number to be inputted must be correct so that another person cannot access the stored data. In addition, by encrypting data stored in a storage medium, such as flash memory, information data does not leak out even if the storage medium is disassembled. COPYRIGHT: (C)2004,JPO