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    • 2. 发明授权
    • Information processor with suppressed cache coherence in low power mode
    • 信息处理器在低功耗模式下抑制高速缓存一致性
    • US07254727B2
    • 2007-08-07
    • US10730672
    • 2003-12-08
    • Noritoshi YoshiyamaSeiichi KawanoHirohide KomiyamaTetsuji Nakamura
    • Noritoshi YoshiyamaSeiichi KawanoHirohide KomiyamaTetsuji Nakamura
    • G06F1/32G06F1/00
    • G06F12/0888G06F1/3203G06F1/3275G06F12/0835G06F12/0837G06F2212/1028G06F2212/621Y02D10/13Y02D10/14Y02D50/20
    • An information processor having a normal-operation mode in which coherence control is performed for making data in a cache memory of a processor identical to data in a main memory and a power-saving mode in which the coherence control is suppressed to lower the power consumption from power consumption in the normal-operation mode and entering the normal-operation mode when an input/output device accesses the main memory in the power-saving mode includes an attribute setting module for setting a device area of the main memory, accessed by the input/output device of the information processor to a non-cacheable attribute for exempting said device area from said coherence control even in the normal-operation mode; an operation mode setting module for allowing the input/output device to access the device area while keeping the operation mode of the information processor in the power-saving mode when the input/output device requests access to the device area in the power-saving mode.
    • 具有正常操作模式的信息处理器,其中执行相干控制以在与主存储器中的数据相同的处理器的高速缓冲存储器中进行数据,以及抑制相干控制以降低功耗的功率保存模式 当在功率保存模式中输入/输出设备访问主存储器时,从正常操作模式的功率消耗进入正常操作模式,包括用于设置主存储器的设备区域的属性设置模块, 信息处理器的输入/输出设备到不可缓存的属性,即使在正常操作模式下也可以将所述设备区域从所述相干控制中免除; 操作模式设置模块,用于当输入/输出设备在功率保存模式下请求访问设备区域时,允许输入/输出设备访问设备区域,同时保持信息处理器的操作模式处于省电模式 。
    • 6. 发明申请
    • Method, service and program for variation reduction in an information processor having multiple power levels
    • 具有多个功率电平的信息处理器的变化减少的方法,服务和程序
    • US20050138449A1
    • 2005-06-23
    • US10739515
    • 2003-12-18
    • Takayuki KatohSeiichi KawanoKenji OkaNoritoshi Yoshiyama
    • Takayuki KatohSeiichi KawanoKenji OkaNoritoshi Yoshiyama
    • G06F1/26G06F1/32
    • G06F1/3203G06F1/263
    • An information processor having a plurality of operating modes differing in power consumption and capable of changing the operating mode according to the amount of processing has periodic switching detection means of performing detection as to whether the information processor is periodically switching from a low-power-consumption operating mode in which the power consumption is lower to a high-power-consumption operating mode in which the power consumption is higher in the plurality of operating modes, and operating mode changing means of changing the operating modes between which the information processor switches to a combination of the operating modes such that the difference between the power consumptions is reduced relative to that at the time of switching between the low-power-consumption operating mode and the high-power-consumption operating mode if the switching cycle detected by the periodic switching detection means is shorter than a set cycle determined in advance.
    • 具有多个功耗不同并能够根据处理量改变操作模式的操作模式的信息处理器具有执行关于信息处理器是否周期性地从低功耗切换的检测的周期性切换检测装置 操作模式,其中功耗低于在多个操作模式中功耗较高的高功耗操作模式;以及操作模式改变装置,其将信息处理器切换到其之间的操作模式 如果通过周期性切换检测到的切换周期,则在低功耗操作模式和高功耗操作模式之间切换时,功率差之间的差异减小, 检测装置比预先确定的设定循环短。
    • 10. 发明授权
    • Information transfer
    • 信息传递
    • US08156331B2
    • 2012-04-10
    • US11779750
    • 2007-07-18
    • Seiichi KawanoTadanobu Inoue
    • Seiichi KawanoTadanobu Inoue
    • H04L29/06
    • H04L9/00G06F21/62G06F21/6263G06F21/6281G06F2221/2105H04L2209/60H04L2209/76
    • Methods and apparatus are provided for securely inputting highly confidential information, exchanging the information via a network, and securely reflecting the information in a computer, without the information being stolen by malicious software. Upon a transfer of encrypted information from a server to a computer, the transferred information is stored in a memory of the computer and the computer is switched to a suspended state and immediately thereafter returns to the previous state to be shifted to under the control of a BIOS. The information stored in the memory is decrypted and processed there. Processing information generated based on the processed information is then encrypted and it is transferred to the server after the computer is switched to under the control of the operating system.
    • 提供方法和装置,用于安全地输入高度机密信息,通过网络交换信息,并将信息安全地反映在计算机中,而不会使信息被恶意软件窃取。 在将加密信息从服务器传送到计算机时,所传送的信息被存储在计算机的存储器中,并且计算机被切换到暂停状态,并且立即返回到先前状态以转移到在 BIOS。 存储在存储器中的信息在那里被解密和处理。 然后,基于处理后的信息生成的处理信息被加密,并且在操作系统的控制下将计算机切换到之后将其传送到服务器。