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    • 3. 发明专利
    • Packet transfer apparatus
    • 分组传送装置
    • JP2005117171A
    • 2005-04-28
    • JP2003346048
    • 2003-10-03
    • Hitachi Ltd株式会社日立製作所
    • KANETAKE TATSUROSUKAI KAZUOKUMAGAI TAKASHI
    • H04L12/701H04L12/44H04L12/741H04L12/56
    • H04L49/552H04L49/3009H04L49/354
    • PROBLEM TO BE SOLVED: To provide a packet transfer apparatus such as a switch for preventing transfer information provided in itself from being searched erroneously. SOLUTION: The packet transfer apparatus is provided with a search key storage section 101 for storing a searching key relative to a packet transfer destination and collation information generated by the searching key in cross-reference with a storage address of the transfer information stored in a transfer information storage section 104, a transmission information acquisition section 103 uses the searching key generated on the basis of header information and the collation information generated from the searching key to search a searching key storage section 101, and when they are coincident with the searching key and the collation information stored in the searching key storage section 101, the transmission information acquisition section 103 acquires the storage position information of the transfer information from the searching key storage section 101, acquires the transfer information stored in the transfer information storage section 104 on the basis of the acquired storage address information and a transfer section 106 transfers packets on the basis of the acquired transfer information. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种用于防止错误地搜索其自身提供的传送信息的诸如开关的分组传送装置。 解决方案:分组传送装置设置有搜索密钥存储部分101,用于存储相对于分组传送目的地的搜索关键字和由搜索关键字生成的对照信息与存储的传送信息的存储地址的交叉引用 在传送信息存储部分104中,传输信息获取部分103使用基于标题信息生成的搜索关键字和从搜索关键字生成的对照信息来搜索搜索关键字存储部分101,并且当它们与 搜索键和存储在搜索关键字存储部101中的对照信息,发送信息获取部103从搜索关键字存储部101获取传送信息的存储位置信息,获取存储在传送信息存储部104中的传送信息 在收购的基础上添加 ress信息,并且传送部分106基于获取的传送信息传送分组。 版权所有(C)2005,JPO&NCIPI
    • 5. 发明专利
    • COOLING STRUCTURE OF ELECTRONIC EQUIPMENT
    • JPH01183888A
    • 1989-07-21
    • JP914988
    • 1988-01-19
    • HITACHI LTD
    • YAMAZAKI SUSUMUOGURO TAKAHIROYANAGIDA TAKEHIKOKUMAGAI TAKASHIKATO MASAO
    • H05K7/20H01L23/46H01L23/467
    • PURPOSE:To make it possible to cool heating elements efficiently, by a constitution, wherein fresh, cool air hits the approximately entire surfaces of fins on the upstream side and on the downstream side with respect to the flow of the cooling air. CONSTITUTION:Two-phase flow pipe 22 is provided uprightly at the upper part of an evaporating part 20. Several cooling fins 23 are attached to the two-phase flow pipe 22. A two-phase flow pipe 22', which is provided at the upper part of modules 4' on the downstream side, has the length of about twice that of the two-phase flow pipe 22. The provided height of fins 23', which are attached in the two-phase flow pipe 22', are formed at the part about twice higher than the fins 23. When cooling air is made to flow in parallel with the upper surface of heating elements 2, the fresh, cool air hits the approximately entire surfaces of the fins 23 and 23'. In this way, the heating elements in any line are cooled sufficiently. Since the air, which is accelerated with the fins, directly hits the any of the fins 23 and 23', the flow speeds of the air streams passing the fins 23 and 23' become approximately equal. All modules 4 and 4' are uniformly cooled.
    • 6. 发明专利
    • JPH0130168B2
    • 1989-06-16
    • JP1311084
    • 1984-01-27
    • HITACHI LTD
    • SATO KAZUHIROKUMAGAI TAKASHIISHIZUKA TAKUOISHIZUKA TADATSUGU
    • G06F17/30
    • PURPOSE:To shorten a processing time by performing logical arithmetic directly through hardware without any time delay behind the field-to-field comparison result of comparison data corresponding to respective fields and interfield comparison result for a blocked record. CONSTITUTION:Field data F1-F3 are inputted from a storage device 1 to an arithmetic circuit 40 and compared with comparison data 41 on a condition 39 to set ''1'' in L1-L3 of a latch 16 when they coincide with each other or ''0'' when not. Then, arithmetic circuits 33-36 perform arithmetic together with the values of logical arithmetic latches 17, 19, and 21 which are installed previously to retrieve a record. Further, field data F1-F3 are set in registers 46 and 47. Then, arithmetic circuits 44 and 45 compares respective fields as to whether they meet conditions 42 and 43 or not. Then, arithmetic circuits 33-36 perform arithmetic together with the values of logical arithmetic latches 27, 29, and 31 to retrieve a record.
    • 7. 发明专利
    • COOLING ARRANGEMENTS FOR AIR-COOLED COMPUTER
    • JPS6461937A
    • 1989-03-08
    • JP21784187
    • 1987-09-02
    • HITACHI LTD
    • YANAGIDA TAKEHIKOKUMAGAI TAKASHI
    • G06F1/20G06F1/00H01L21/66H01L23/36H01L23/46H01L23/467H05K7/20
    • PURPOSE:To improve the effect of cooling, by having fins which are joined with LSIs so that each fin becomes smaller then an LSI when viewed from the upper face of a wiring substrate as well as fins which are mounted removably so that they are widened in the direction of right angles to the flow of cooled air. CONSTITUTION:Numerous LSIs 1 are equipped on a wiring substrate 4 and forced air cooling is performed. Small sized fins A2 are mounted at an LSI substrate and then large sized fins B5 are mounted to the fins A2. The fins B5 are widened among the LSIs 1 adjacent in the direction of right angles to the flow of cooled air. A large number of signal terminals 7 for inspecting the LSIs are installed around the LSIs 1 of the wiring substrate surface. When the LSIs 1 equipped with the wiring substrate 4 are inspected, the large fins B5 are dismounted and a prove for inspection is used so that it comes into contact with the signal terminals 7. When inspected, cooling is performed only by the small sized fins A2, while increasing the amount of cooling air around fin parts. When operated as a computer, the fins B5 are mounted to enlarge heat sinking planes and then very little amount of free air passes among the LSIs, resulting in doing away with useless flowing of air. This approach not only increases heating surface area but also contributes to cooling air effectively by widening the fins through the whole passage width.
    • 8. 发明专利
    • Storage control system
    • 存储控制系统
    • JPS61131139A
    • 1986-06-18
    • JP25181984
    • 1984-11-30
    • Hitachi Ltd
    • KUMAGAI TAKASHIKISHI MAKOTOTANIGUCHI TOSHIHISA
    • G06F12/08
    • PURPOSE: To attain the system in operation even when a main storage device is disconnected by using an intermediate buffer as a continuous address area as if it were used to be the main storage device if a fault takes place in the main storage device.
      CONSTITUTION: If a fault takes place in the main storage off line 131 is made logical 1. In this case, a selector 107 selects a low-order prescribed bit address 122 in a high-order address in the set access address to an address register 101 directly so as to disuse an intermediate buffer address array WAA 3. Thus, the row of the corresponding column of an intermediate buffer WS 4 is selected by the address 122. That is, the WS 4 is accessed directly by the column address 120 and the low-order prescribed bit address 122 in the high-order address among access addresses of the address register 101. Thus, it is possible to use the WS 4 as a continuous address area.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:即使在主存储设备通过使用中间缓冲区作为连续地址区域而断开的情况下,即使在主存储设备中发生故障时被用作主存储设备,也可以使系统正常运行。 构成:如果在主存储器中发生故障,则线路131变为逻辑1.在这种情况下,选择器107将设置的访问地址中的高位地址中的低位规定位地址122选择到地址寄存器 101,以便不使用中间缓冲器地址阵列WAA 3.因此,中间缓冲器WS4的相应列的行由地址122选择。也就是说,WS 4被列地址120直接访问,并且 地址寄存器101的访问地址中的高阶地址中的低阶规定位地址122.因此,可以将WS 4用作连续地址区域。
    • 9. 发明专利
    • Memory control system
    • 存储控制系统
    • JPS60211552A
    • 1985-10-23
    • JP6765484
    • 1984-04-06
    • Hitachi Ltd
    • KUMAGAI TAKASHISUMIMOTO TSUTOMUTANIGUCHI TOSHIHISA
    • G06F12/08
    • G06F12/0802
    • PURPOSE:To improve the through-out of a memory access of an input/output processing unit by checking an address in a block of access request to select whether the data is transferred in a form of block transfer or transferred directly from a main storage device to the input/output processing unit. CONSTITUTION:Suppose that a desired data does not exists in a buffer storage device (BS) 5 through the access from the input/output processing unit (IOP)2. When the 5th, 6th bits of an address register 3 are ''11'', a control circuit 6 starts a main storage device (MS) 7 so that a desired 16-byte data 34 only is transferred to the IOP2 through a data line 14. Regardless of above processing, the data is reduced to useless, since the 16-byte data 31-33 in the block are not fetched by this channel after the 16-byte data 34 is fetched even if a block 30 of the MS7 is transferred to the BS5. Thus, the direct transfer of the desired 16-byte data 34 only from the MS7 to the IOP2 has far less time.
    • 目的:通过检查访问请求块中的地址来改进输入/输出处理单元的存储器访问的通过,以选择数据是以块传送形式传送还是直接从主存储设备传送 到输入/输出处理单元。 构成:假设通过来自输入/输出处理单元(IOP)2的访问在缓冲存储设备(BS)5中不存在期望的数据。 当地址寄存器3的第5,6位是“11”时,控制电路6启动主存储装置(MS)7,使得期望的16字节数据34仅通过数据线传送到IOP2 无论上述处理为何,数据被减少到无用,因为即使MS7的块30为块,获取16字节数据34之后,该块中的16字节数据31-33不被该信道取出 转移到BS5。 因此,期望的16字节数据34仅从MS7到IOP2的直接传送具有远远少的时间。
    • 10. 发明专利
    • DYNAMIC TASK NUMBER DECIDING METHOD
    • JPH06187174A
    • 1994-07-08
    • JP33833892
    • 1992-12-18
    • HITACHI LTDHITACHI SOFTWARE ENG
    • ITAI TAKEONASHIMOTO KUNIONISHIKAWA MITSUOKUMAGAI TAKASHI
    • G06F9/46
    • PURPOSE:To decide the number of tasks optimal to a hardware environment, and to improve the responsibility of a transaction processing by searching the number of tasks for processing the transaction from the performance of the hardware environment. CONSTITUTION:An electronic computer 10 is equipped with an on-line control program 20, and an on-line system is constituted of a program library 12 in which each kind of program loaded in a main storage device by the on-line control program 20 as necessary is stored, on-line control program working data file 13 to be inputted and outputted by the on-line control program 20, and on-line terminal 14. Then, in an initial setting at the time of activating the on-line system, the performance value of a central processing unit at the time of activating the on-line system and the performance value of a disk device connected with the central processing unit are obtained, a task number decision coefficient is obtained from the obtained central processing unit performance value and the disk device performance value, and the task number is decided from the task number decision coefficient.