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    • 23. 发明授权
    • Apparatus for calculating and prefetching a branch target address
    • 用于计算和预取分支目标地址的装置
    • US08578135B2
    • 2013-11-05
    • US13423145
    • 2012-03-16
    • Teppei HirotsuYuuichi AbeTakeshi KataokaYasuhiro Nakatsuka
    • Teppei HirotsuYuuichi AbeTakeshi KataokaYasuhiro Nakatsuka
    • G06F9/30G06F9/40G06F15/00
    • G06F9/30054G06F9/3804G06F9/382
    • A high-performance information processing technique permitting updating of an instruction buffer ready for effective prefetching to branch instructions and returning to the subroutine with a small volume of hardware is to be provided at low cost. It is an information processing apparatus equipped with a CPU, a memory, prefetch means and the like, wherein a prefetch address generator unit in the prefetch means decodes a branching series of instructions including at least one branched address calculating instruction and branching instruction to a branched address out of a current instruction buffer storing the series of instructions currently accessed by the CPU, and thereby looks ahead to the branching destination address. The information processing apparatus further comprises a RTS instruction buffer for storing a series of instructions of the return destinations of RTS instructions, and series of instructions stored in the current instruction buffer are saved into the RTS instruction buffer.
    • 能够以低成本提供允许更新准备好用于有效预取到分支指令并且以少量硬件返回到子程序的指令缓冲器的高性能信息处理技术。 它是配备有CPU,存储器,预取装置等的信息处理装置,其中预取装置中的预取地址发生器单元将包含至少一个分支地址计算指令和分支指令的分支指令序列解码为分支 从存储CPU当前访问的一系列指令的当前指令缓冲器中寻址,从而期待分支目的地址。 信息处理装置还包括RTS指令缓冲器,用于存储RTS指令的返回目的地的一系列指令,存储在当前指令缓冲器中的一系列指令被保存到RTS指令缓冲器中。
    • 25. 发明申请
    • Packet communication apparatus
    • 分组通信装置
    • US20080177855A1
    • 2008-07-24
    • US12076686
    • 2008-03-21
    • Hiroshi AritaYasuhiro NakatsukaKotaro ShimamuraYasuwo Watanabe
    • Hiroshi AritaYasuhiro NakatsukaKotaro ShimamuraYasuwo Watanabe
    • G06F15/16
    • H04L69/16H04L49/90H04L69/161H04L69/162H04L69/22
    • A packet communication apparatus, which includes a CPU, a memory, and a packet communication circuit, acts as an interface between a network-connected controlled object and a network terminal that remotely monitors and controls the controlled object, and transmits and receives a packet between the controlled object and the network terminal, further includes a copy and operation unit that is a hardware unit for executing the checksum calculation to check for a packet error and the copy operation. The copy and operation unit performs the packet data copy operation and the checksum calculation simultaneously between a sending buffer/receiving buffer, formed in the memory and used by the packet communication circuit, and a work area used by a communication processing program, thus reducing the load of the CPU and increasing the communication processing speed.
    • 包括CPU,存储器和分组通信电路的分组通信装置充当远程监视和控制受控对象的网络连接受控对象和网络终端之间的接口,并且在 受控对象和网络终端还包括作为用于执行校验和计算以检查分组错误和复制操作的硬件单元的复制和操作单元。 复制和操作单元在存储器中形成并由分组通信电路使用的发送缓冲器/接收缓冲器与由通信处理程序使用的工作区域之间同时执行分组数据复制操作和校验和计算,从而减少 加载CPU并增加通信处理速度。
    • 30. 发明授权
    • Packet communication apparatus
    • 分组通信装置
    • US07496679B2
    • 2009-02-24
    • US10446929
    • 2003-05-29
    • Hiroshi AritaYasuhiro NakatsukaYasuwo WatanabeYoshihiro TanakaKenji Furuhashi
    • Hiroshi AritaYasuhiro NakatsukaYasuwo WatanabeYoshihiro TanakaKenji Furuhashi
    • G06F15/16
    • H04L29/06H04L49/90H04L69/08
    • A packet communication apparatus capable of performing packet conversion at high speed for packet transfer or packet transmission/reception has: a packet conversion unit for performing packet conversion for a reception packet received at a plurality of communication units and for a transmission packet to be transmitted from the plurality of communication units; and a transfer control unit for outputting, when the reception packet received by the communication unit is judged as a the transfer packet, the reception packet to a transfer buffer, for outputting the transmission packet to the communication unit corresponding to the communication object at a destination of the transmission packet generated by a packet generating and processing unit, and for outputting the transfer packet to the communication unit corresponding to the communication object at a destination of the transfer packet stored in the transfer buffer.
    • 能够高速进行分组转换以进行分组传送或分组发送/接收的分组通信装置具有:分组转换单元,用于对在多个通信单元接收的接收分组进行分组转换,以及对于要从 所述多个通信单元; 以及传送控制单元,用于当将由通信单元接收到的接收分组判断为传送分组时,将接收分组输出到传送缓冲器,用于将发送分组输出到与目的地的通信对象相对应的通信单元 由分组产生和处理单元产生的传输分组,并且用于将存储在传送缓冲器中的传送分组的目的地处的传送分组输出到与通信对象对应的通信单元。