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1. 发明专利

JPH11134227A FILE FORMAT CONVERTING METHOD, AND FILE SYSTEM, INFORMATION SYSTEM, AND ELECTRONIC COMMERCE TRANSACTION SYSTEM USING THE METHOD 失效
公开(公告)号：JPH11134227A
公开(公告)日：1999-05-21
申请号：JP29376597
申请日：1997-10-27
申请人： HITACHI LTD
发明人： INOHARA SHIGEKAZU , KAGIMASA TOYOHIKO , NODA FUMIO , MASUOKA YOSHIMASA , BIN KIYOUKA
IPC分类号： G06F12/00 , G06F17/30
摘要： PROBLEM TO BE SOLVED: To enable a user to make good use of the latest conversion destination file all the time without specifying a conversion source file and the timing of format conversion by holding the correspondence relation between the conversion source file and conversion destination files, and conversion programs in the file system. SOLUTION: In a conversion table 120, a group of the conversion source file 130 and conversion destination files 131, 131'... is made to correspond to the conversion programs 103, 103'... Then the correspondence relation between the conversion source file 130 and conversion destination files 131, 131'..., and the conversion programs 103, 103'... is held in the file system to eliminate the need to indicate which file is converted to which file by the user at each time. The operation that an application performs without fail when reading and writing a file is used as a trigger for format conversion. Consequently, the operation of the application is known in detail through the file system and corresponding operation can be done.

2. 发明专利

JPH10320337A DISTRIBUTED DATA MANAGEMENT METHOD 失效
公开(公告)号：JPH10320337A
公开(公告)日：1998-12-04
申请号：JP12524797
申请日：1997-05-15
申请人： HITACHI LTD
发明人： INOHARA SHIGEKAZU , KAGIMASA TOYOHIKO , MASUOKA YOSHIMASA , NODA FUMIO , BIN KIYOUKA
IPC分类号： G06F13/00 , G06F12/00 , G06F17/30
摘要： PROBLEM TO BE SOLVED: To select a communication line that performs fast communication and to shorten the time from sending a request to a client until the request is met by using the communication history of other server which has a possibility of having needed data and requesting a selected server to send the needed data from the other server. SOLUTION: When a client 204 sends a request 120 that includes a uniform resource locator(URL) to a server 205 and requests acquisition of URL content, a request processing part 101 retrieves a home page cache 104 returns the URL content with answerback to the client 204. Also, if the URL content does not exist in the cache 104, the server 205 refers to an access strategic table 105 which maintains a communication history, decides a server 205', 205",... to which the request should be sent and transfers a request 120 according to a request 122. The server 205 sends URL content that is acquired through an answer 123 from the server to which the request 120 is sent as answer 121 to the client 204.

3. 发明专利

JPH10301848A VIRTUAL STORAGE DEVICE PROVIDED WITH MULTIPLE PAGE SIZE 失效
公开(公告)号：JPH10301848A
公开(公告)日：1998-11-13
申请号：JP11063797
申请日：1997-04-28
申请人： HITACHI LTD
发明人： KAGIMASA TOYOHIKO , TAKUBO SHUNJI
IPC分类号： G06F12/08 , G06F12/10
摘要： PROBLEM TO BE SOLVED: To improve the performance of a computer system in a large capacity virtual storage and to eliminate memory resources required for virtual storage management by specifying one of plural virtual storage page sizes determined by the step number of a conversion table and converting a virtual address to a real address. SOLUTION: A virtual page address for indicating the high-order 51 bits of a virtual address register 10 is inputted to two address conversion buffers(TLBs) 21 and 22. When it hits one of the TLBs 21 and 22, the real page address of a real page allocated to the virtual page of the virtual page address is set to the high-order 51 bits of a real page address register 30. The displacement (D) 12 bits of the virtual address register are set to the low-order 12 bits of the real page address register 30 as they are. In such a manner, in the case of hitting the TLBs 21 and 22, address conversion is completed at a high speed without access to address conversion tables 23-26.

4. 发明专利

JPH10154116A DATA TRANSFER METHOD 失效
公开(公告)号：JPH10154116A
公开(公告)日：1998-06-09
申请号：JP31380596
申请日：1996-11-25
申请人： HITACHI LTD
发明人： YAMAZAKI YASUO , MORI TOSHIAKI , UKAI TOSHIYUKI , SHIMIZU MASAAKI , KAGIMASA TOYOHIKO
IPC分类号： G06F13/00
摘要： PROBLEM TO BE SOLVED: To transfer transmitting data without buffering by an operating system (OS). SOLUTION: In a computer 100 at a sending end, an OS 105 communicates with an OS 205 and collectively confirms whether transmission destination user programs 203 of plural transmitting data which are designated by plural user programs 103 are separately in a receivable state. When a user program 204 at a receiving end does not issue a receiving request, the OS 105 regards the program as unreceivable, collects the transmission of plural transmitting data which are decided as transmittable and instructs a communication device 112. In the device 112, a DMA circuit 113 directly and continuously reads the transmitting data from the buffer 104 of each user program 103, and a communication circuit 114 separately transmits the transmitting data via a channel 300. In a computer 200 at the receiving end, a DMA circuit 213 directly and continuously writes each transmitting data on the buffer 204 of a user program 203 of a transmission destination.

5. 发明专利

JPH08185275A AREA ALLOCATING METHOD FOR DISK ARRAY AND DISK ARRAY ACCESS METHOD 失效
公开(公告)号：JPH08185275A
公开(公告)日：1996-07-16
申请号：JP32792394
申请日：1994-12-28
申请人： HITACHI LTD
发明人： UKAI TOSHIYUKI , KAGIMASA TOYOHIKO , MORI TOSHIAKI , SHIMIZU MASAAKI
IPC分类号： G06F3/06 , G11B20/12
摘要： PURPOSE: To speed up the execution of a write request or read request and execute more write requests in parallel by selecting storage areas to be allocated so that storage areas for holding error correction codes are mutually different from a specific number of data precedent to the data. CONSTITUTION: When a logical block is not allocated for a file block request, an unallocated logical block is selected out of an allocation candidate logical block list 24 and allocated to the file block (process 14). When logical blocks to be allocated to plural logically successive file blocks are selected, the logical blocks to be allocated to the file blocks are selected so that a drive for data writing that two mutually successive file blocks require and a drive for parity holding in the parity group that the data belong to do not have a mutual conflict.

6. 发明专利

JPH0346043A REAL STORAGE ALLOCATION METHOD 失效
公开(公告)号：JPH0346043A
公开(公告)日：1991-02-27
申请号：JP18032389
申请日：1989-07-14
申请人： HITACHI LTD
发明人： TAKAHASHI KIKUO , KAGIMASA TOYOHIKO , MATSUDA YOSHIKI , MORI TOSHIAKI
IPC分类号： G06F12/08 , G06F12/10 , G06F12/12 , G06F12/14
摘要： PURPOSE:To effectively control a main storage by mutually allocating pages between respective areas constituted with different sizes on real storage/virtual storage. CONSTITUTION:The virtual storage 11 consists of the group of virtual pages 12 with the size of 4KB (kilo byte), and the real storage 10 is divided into two areas 20 and 30, whose real page sizes are different. A key storage 5 for holding a storage protection key for respective pages of the real storage 10 is provided. When the virtual page size is smaller than the real page size (1/ n-times), the real page size being a key giving unit can be enlarged without depending on the virtual page size by dividing the internal part of the real page into 1/n and allocating them in the virtual page size unit. Thus, the main storage can efficiently be controlled since allocation is attained between the virtual page 12 and the real page, whose sizes are different.

7. 发明专利

JPS6389962A METHOD AND DEVICE FOR ASSIGNING PROCESSOR 失效
公开(公告)号：JPS6389962A
公开(公告)日：1988-04-20
申请号：JP23457886
申请日：1986-10-03
申请人： HITACHI LTD
发明人： MATSUDA YOSHIKI , KAGIMASA TOYOHIKO , TAKAHASHI KIKUO , YOSHIZUMI SEIICHI
IPC分类号： G06F15/16 , G06F15/177
摘要： PURPOSE:To perform the procedure call of a processor on the other side at high speed, and to contrive to improve the availability of the processor, by switching the call system of the processor according to the state of the processor, in an asymmetric multiprocessor. CONSTITUTION:When the multiprocessor executes the instruction of a main routine in a main memory device 1 by a main processor A100 in a separation mode, and if another processor procedure is called by an instruction call, a signal line 154 from an instruction control circuit 103 goes to '1'. The value of a mode register 3 is '1' because a mode is the separation mode, and a signal line 150 goes to '1'. Therefore, the output 155 of an AND gate 104 goes to '1', and an interruption generation circuit 106 is started up, and an interruption signal 157 goes to '1', then, interruption is generated. As a result, control is delivered to an operating system in the main memory 1, and a process state table is rewritten, and a process assigning request is performed. And processor assignment on a subroutine that is the another processor procedure, is performed.

8. 发明专利

JPS6162952A Address converter 失效
标题翻译：地址转换器
公开(公告)号：JPS6162952A
公开(公告)日：1986-03-31
申请号：JP18463084
申请日：1984-09-05
申请人： Hitachi Ltd
发明人： IIZUKA TAKAYOSHI , GOTO SHIZUO , KAGIMASA TOYOHIKO , TORII SHUNICHI
IPC分类号： G06F12/10 , G06F12/08
摘要： PURPOSE: To eliminate the unnecessary processing of a super-giant matrix and to process the super-giant matrix directly b dividing an address into a bit showing an address converting mode for matrix ad a matrix into the number, line and column for discriminating the matrix.
CONSTITUTION: A bit line 1 showing an address is composed of a mode bit 2, matrix number MXN, line number RX and column number CX. The contents of a register MTQ, which is the value of the head address of the matrix table MT is added with the matrix number MXN, and an item 3 in the matrix table MT is formed. The output of a selector is sifted by the bit number, corresponding to the value showing the length of the matrix component, and a displacement 16 in the pages is supplied to an adder 17. The output 16 of a sifter is added by a field 14 from a page table PT by the adder 17 to generate a real address 18.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：消除超巨型矩阵的不必要处理，并直接处理超巨型矩阵b将地址划分成一个位，将矩阵矩阵的地址转换模式转换成用于区分矩阵的数字，行和列。构成：表示地址的位线1由模式位2，矩阵号MXN，行号RX和列号CX组成。作为矩阵表MT的头地址的值的寄存器MTQ的内容与矩阵号MXN相加，并且形成矩阵表MT中的项目3。选择器的输出被对应于表示矩阵分量的长度的值的位数筛选，并且页面中的位移16被提供给加法器17.筛选器的输出端16由字段14 通过加法器17从页表PT生成实地址18。

9. 发明专利

JP2000148403A DISK ARRAY 失效
公开(公告)号：JP2000148403A
公开(公告)日：2000-05-30
申请号：JP29059399
申请日：1999-10-13
申请人： HITACHI LTD
发明人： TSUNODA HITOSHI , KAGIMASA TOYOHIKO , TAKAMOTO YOSHIFUMI , TANAKA ATSUSHI
IPC分类号： G06F3/06 , G06F11/20
摘要： PROBLEM TO BE SOLVED: To increase the number of data which can be transferred in parallel. SOLUTION: A drive unit 3 connected to the disk controller 2 for the disk array has a logical group 5 composed of a plurality of drives 4. In the logical group 5, respective pieces of data are doubled and stored so that copy data of the data held on the same drive are decentralized and held by mutually different drives other than the drive. When pieces of data held by the same drive are read out, doubled data or the source data of those pieces of data are read out of different drives in parallel.

10. 发明专利

JPH10326217A REMOTE FILE INPUTTING AND OUTPUTTING METHOD 失效
公开(公告)号：JPH10326217A
公开(公告)日：1998-12-08
申请号：JP13643497
申请日：1997-05-27
申请人： HITACHI LTD
发明人： WATANABE AKI , SHIMIZU MASAAKI , KAGIMASA TOYOHIKO
IPC分类号： G06F13/12 , G06F12/00 , G06F13/00
摘要： PROBLEM TO BE SOLVED: To obtain an efficient inputting and outputting method by finding a transfer unit according to the size of data requested to be inputted and outputted, adjusting the transfer unit according to the success rate of data transfer, and also adjusting the constitution of transmit and receive date storage areas according to the distribution of transfer units of remote file input/output requests. SOLUTION: Each time a request to input or output a remote file is made, a transfer unit is determined according to the size of the data requested to be inputted or outputted and adjusted according to the success rate of data transfer, and the constitution of transmit and receive data storage areas is adjusted according to the distribution of remote file input/output requests that a client computer is processing. In this system, a transmit data storage area 131 and a receive data storage area 132 are controlled on a client 100 according to a transmit and receive data storage area control table 180. On a server 200, on the other hand, a transmit data storage area 231 and a receive data storage area 232 are controlled with a transmit and receive data storage area control table 280.

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