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    • 1. 发明授权
    • Data processing apparatus
    • 数据处理装置
    • US07788487B2
    • 2010-08-31
    • US10580818
    • 2004-11-26
    • Takayuki ItoTeruto HirotaKouichi KanemuraTomoyuki HagaYoshikatsu Ito
    • Takayuki ItoTeruto HirotaKouichi KanemuraTomoyuki HagaYoshikatsu Ito
    • H04L29/06G06F7/04G06F13/00
    • G06F9/4812G06F9/468G06F21/78G06F2221/2105
    • In a data processing apparatus that switches between a secure mode and a normal mode during execution, the secure mode allowing access to secure resources to be protected, the normal mode not allowing access to the secure resources, when the secure resources increase in the secure mode, the load on a protection mechanism for protecting the resources becomes large. Thus, there is a demand for data processing apparatuses that are able to reduce secure resources.The present invention relates to a data processing apparatus that stores therein a secure program including one or more processing procedures which use secure resources and a call instruction for calling a normal program to be executed in a normal mode. While executing the secure program, the data processing apparatus calls the normal program with the call instruction and operates according to the called normal program.
    • 在执行期间在安全模式和正常模式之间切换的数据处理装置中,当安全模式下的安全资源增加时,安全模式允许访问保护资源以被保护,正常模式不允许访问安全资源 用于保护资源的保护机制的负担变大。 因此,需要能够减少安全资源的数据处理装置。 数据处理装置本发明涉及一种数据处理装置,其中存储有一个或多个使用安全资源的处理过程的安全程序和用于调用在正常模式下执行的正常程序的呼叫指令。 在执行安全程序时,数据处理装置利用呼叫指令调用正常程序,并根据所调用的正常程序进行操作。
    • 2. 发明授权
    • Information processing apparatus operable to switch operating systems
    • 可操作以切换操作系统的信息处理设备
    • US07503049B2
    • 2009-03-10
    • US10853132
    • 2004-05-26
    • Kouichi KanemuraTeruto HirotaTakayuki Ito
    • Kouichi KanemuraTeruto HirotaTakayuki Ito
    • G06F9/46G06F15/00G06F15/76G06F9/30G06F9/40G06F7/38G06F9/00G06F9/44G06F12/00G06F12/14G06F13/24G06F13/32G06F15/177
    • G06F9/441G06F2209/481
    • An information processing apparatus switches between an Operating System 1 and an Operating System 2 during operation and comprises: a storing unit including a first area storing data managed by OS1, a second area storing a reset handler containing instructions for returning to OS2 and for branching to OS2, and a switching unit that switches connection/disconnection of the first area with outside; a table storing unit storing information showing the reset handler's position; a CPU having a program counter and executing an instruction at a position indicated by positional information in the program counter; and a management unit that, when instructed to switch from OS1 to OS2 while the apparatus is operating with OS1, instructs the switching unit to disconnect the first area and the CPU to reset. When instructed to reset itself, the CPU initializes its state and sets the reset handler positional information into the program counter.
    • 信息处理装置在操作期间在操作系统1和操作系统2之间切换,并且包括:存储单元,其包括存储由OS1管理的数据的第一区域,存储复位处理器的第二区域,该复位处理器包含用于返回到OS2的指令并分支到 OS2,以及切换单元,其切换第二区域与外部的连接/断开; 表存储单元,存储表示重置处理者的位置的信息; CPU,其具有程序计数器,并且在由程序计数器中的位置信息指示的位置处执行指令; 以及管理单元,当指示在OS1操作时从OS1切换到OS2时,指示切换单元断开第一区域和CPU的复位。 当指示自己复位时,CPU初始化其状态,并将复位处理程序位置信息设置到程序计数器中。
    • 3. 发明申请
    • Information processing apparatus operable to switch operating systems
    • 可操作以切换操作系统的信息处理设备
    • US20050172294A1
    • 2005-08-04
    • US10853132
    • 2004-05-26
    • Kouichi KanemuraTeruto HirotaTakayuki Ito
    • Kouichi KanemuraTeruto HirotaTakayuki Ito
    • G06F9/445G06F9/46
    • G06F9/441G06F2209/481
    • An information processing apparatus switches between an Operating System 1 and an Operating System 2 during operation and comprises: a storing unit including a first area storing data managed by OS1, a second area storing a reset handler containing instructions for returning to OS2 and for branching to OS2, and a switching unit that switches connection/disconnection of the first area with outside; a table storing unit storing information showing the reset handler's position; a CPU having a program counter and executing an instruction at a position indicated by positional information in the program counter; and a management unit that, when instructed to switch from OS1 to OS2 while the apparatus is operating with OS1, instructs the switching unit to disconnect the first area and the CPU to reset. When instructed to reset itself, the CPU initializes its state and sets the reset handler positional information into the program counter.
    • 信息处理装置在操作期间在操作系统1和操作系统2之间切换,并且包括:存储单元,其包括存储由OS1管理的数据的第一区域,存储包含用于返回到OS2的指令的复位处理器的第二区域, 分支到OS2,以及切换单元,其切换第一区域与外部的连接/断开; 表存储单元,存储表示重置处理者的位置的信息; CPU,其具有程序计数器,并且在由程序计数器中的位置信息指示的位置处执行指令; 以及管理单元,当所述设备在用OS 1操作时被指示从OS 1切换到OS2时,指示切换单元断开第一区域和CPU的复位。 当指示自己复位时,CPU初始化其状态,并将复位处理程序位置信息设置到程序计数器中。
    • 4. 发明申请
    • Data processing apparatus
    • 数据处理装置
    • US20070113079A1
    • 2007-05-17
    • US10580818
    • 2004-11-26
    • Takayuki ItoTeruto HirotaKouichi KanemuraTomoyuki HagaYoshikatsu Ito
    • Takayuki ItoTeruto HirotaKouichi KanemuraTomoyuki HagaYoshikatsu Ito
    • H04L9/00
    • G06F9/4812G06F9/468G06F21/78G06F2221/2105
    • In a data processing apparatus that switches between a secure mode and a normal mode during execution, the secure mode allowing access to secure resources to be protected, the normal mode not allowing access to the secure resources, when the secure resources increase in the secure mode, the load on a protection mechanism for protecting the resources becomes large. Thus, there is a demand for data processing apparatuses that are able to reduce secure resources. The present invention relates to a data processing apparatus that stores therein a secure program including one or more processing procedures which use secure resources and a call instruction for calling a normal program to be executed in a normal mode. While executing the secure program, the data processing apparatus calls the normal program with the call instruction and operates according to the called normal program.
    • 在执行期间在安全模式和正常模式之间切换的数据处理装置中,当安全模式下的安全资源增加时,安全模式允许访问保护资源以被保护,正常模式不允许访问安全资源 用于保护资源的保护机制的负担变大。 因此,需要能够减少安全资源的数据处理装置。 数据处理装置本发明涉及一种数据处理装置,其中存储有一个或多个使用安全资源的处理过程的安全程序和用于调用在正常模式下执行的正常程序的呼叫指令。 在执行安全程序时,数据处理装置利用呼叫指令调用正常程序,并根据所调用的正常程序进行操作。