公开(公告)号：US6148367A

公开(公告)日：2000-11-14

申请号：US777966

申请日：1996-12-24

申请人： Toshiaki Tsuboi ,  Akira Yamamoto ,  Shigeo Honma ,  Yoshihiro Asaka ,  Koji Ozawa ,  Hiroyuki Kitajima ,  Michio Miyazaki

发明人： Toshiaki Tsuboi ,  Akira Yamamoto ,  Shigeo Honma ,  Yoshihiro Asaka ,  Koji Ozawa ,  Hiroyuki Kitajima ,  Michio Miyazaki

IPC分类号： G06F12/08 ,  G06F12/12 ,  G06F13/00

CPC分类号： G06F12/0873 ,  G06F12/0866 ,  G06F12/0804 ,  G06F2212/312

摘要： In allocating an area of a cache memory to each storage unit, proper allocation of the cache memory is made to each storage unit. If the amount of write-after data becomes equal to or more than a threshold value, an allocation limit is set to each disk unit. If CPU issues a data write request requiring the amount of data equal to or more than the allocation limit, the data write request is held in a wait state until the amount of write-after data becomes less than the allocation limit. Therefore, the allocation amount to the disk unit becomes neither too large nor too small. In this manner, proper allocation of the cache memory to each disk unit can be realized.

摘要翻译： 在向每个存储单元分配高速缓冲存储器的区域时，对每个存储单元进行高速缓冲存储器的适当分配。 如果写入数据量等于或大于阈值，则对每个盘单元设置分配限制。 如果CPU发出数据写请求，要求数据量等于或大于分配限制，则数据写入请求将保持在等待状态，直到写入数据量小于分配限制为止。 因此，对于盘单元的分配量既不太大也不太小。 以这种方式，可以实现对每个盘单元的高速缓冲存储器的适当分配。

公开(公告)号：US5418929A

公开(公告)日：1995-05-23

申请号：US187500

申请日：1994-01-28

申请人： Toshiaki Tsuboi ,  Akira Yamamoto ,  Shigeo Honma ,  Yoshihiro Asaka ,  Koji Ozawa ,  Hiroyuki Kitajima ,  Michio Miyazaki

发明人： Toshiaki Tsuboi ,  Akira Yamamoto ,  Shigeo Honma ,  Yoshihiro Asaka ,  Koji Ozawa ,  Hiroyuki Kitajima ,  Michio Miyazaki

IPC分类号： G06F12/08 ,  G06F12/12 ,  G06F13/00

CPC分类号： G06F12/0873 ,  G06F12/0866 ,  G06F12/0804 ,  G06F2212/312

摘要： In allocating an area of a cache memory to each storage unit, proper allocation of the cache memory is made to each storage unit. If the amount of write-after data becomes equal to or more than a threshold value, an allocation limit is set to each disk unit. If CPU issues a data write request requiring the amount of data equal to or more than the allocation limit, the data write request is held in a wait state until the amount of write-after data becomes less than the allocation limit. Therefore, the allocation amount to the disk unit becomes neither too large nor too small. In this manner, proper allocation of the cache memory to each disk unit can be realized.

摘要翻译： 在向每个存储单元分配高速缓冲存储器的区域时，对每个存储单元进行高速缓冲存储器的适当分配。 如果写入数据量等于或大于阈值，则对每个盘单元设置分配限制。 如果CPU发出数据写请求，要求数据量等于或大于分配限制，则数据写入请求将保持在等待状态，直到写入数据量小于分配限制为止。 因此，对于盘单元的分配量既不太大也不太小。 以这种方式，可以实现对每个盘单元的高速缓冲存储器的适当分配。

公开(公告)号：US5307473A

公开(公告)日：1994-04-26

申请号：US833129

申请日：1992-02-10

申请人： Toshiaki Tsuboi ,  Akira Yamamoto ,  Shigeo Honma ,  Yoshihiro Asaka ,  Koji Ozawa ,  Hiroyuki Kitajima ,  Michio Miyazaki

发明人： Toshiaki Tsuboi ,  Akira Yamamoto ,  Shigeo Honma ,  Yoshihiro Asaka ,  Koji Ozawa ,  Hiroyuki Kitajima ,  Michio Miyazaki

IPC分类号： G06F12/08 ,  G06F12/12 ,  G06F13/00

CPC分类号： G06F12/0873 ,  G06F12/0866 ,  G06F12/0804 ,  G06F2212/312

摘要： In allocating an area of a cache memory to each storage unit, proper allocation of the cache memory is made to each storage unit. If the amount of write-after data becomes equal to or more than a threshold value, an allocation limit is set to each disk unit. If CPU issues a data write request requiring the amount of data equal to or more than the allocation limit, the data write request is held in a wait state until the amount of write-after data becomes less than the allocation limit. Therefore, the allocation amount to the disk unit becomes neither too large nor too small. In this manner, proper allocation of the cache memory to each disk unit can be realized.

摘要翻译： 在向每个存储单元分配高速缓冲存储器的区域时，对每个存储单元进行高速缓冲存储器的适当分配。 如果写入数据量等于或大于阈值，则对每个盘单元设置分配限制。 如果CPU发出数据写请求，要求数据量等于或大于分配限制，则数据写入请求将保持在等待状态，直到写入数据量小于分配限制为止。 因此，对于盘单元的分配量既不太大也不太小。 以这种方式，可以实现对每个盘单元的高速缓冲存储器的适当分配。

公开(公告)号：US5193154A

公开(公告)日：1993-03-09

申请号：US783718

申请日：1991-10-25

申请人： Hiroyuki Kitajima ,  Akira Yamamoto ,  Takashi Doi ,  Masafumi Nozawa

发明人： Hiroyuki Kitajima ,  Akira Yamamoto ,  Takashi Doi ,  Masafumi Nozawa

IPC分类号： G06F13/00

CPC分类号： G06F13/00 ,  Y10S707/99955

摘要： A buffered peripheral system comprises a backup memory and a primary control unit which has a buffer memory for temporarily storing a copy of the contents of a buffer memory which stores data to be written to a peripheral device and a control device for issuing a command necessary to write the block stored in the buffer memory device to the peripheral device. The primary control unit also includes a recording device for recording the block number corresponding to the block which was most recently written to the peripheral device. The blocks of data which have been written to the peripheral device is then deleted from the backup memory to make room for storing further blocks of data. The system further has a backup control unit substantially identical to the primary control unit. Only the primary control unit normally operates to control the writing to the peripheral device. Upon detection of the failure of the buffer memory in the primary control unit, the backup control unit completes the operation of writing to the peripheral device by retrieving the blocks of data to be written to the peripheral device from the backup memory device using the block number information.

摘要翻译： 缓冲外设系统包括备用存储器和主控单元，该主控制单元具有缓冲存储器，用于临时存储要写入外围设备的数据的缓冲存储器的内容副本以及用于发出必要的命令的控制装置 将存储在缓冲存储器件中的块写入外围设备。 主控制单元还包括用于记录与最近写入外围设备的块相对应的块号的记录装置。 已经写入外围设备的数据块然后从备份存储器中删除，为存储更多的数据块腾出空间。 该系统还具有与主控制单元基本相同的备用控制单元。 只有主控制单元通常操作才能控制对外围设备的写入。 在检测到主控制单元中的缓冲存储器的故障时，备用控制单元通过使用块号从备用存储装置检索要写入外围设备的数据块来完成对外围装置的写入操作 信息。

公开(公告)号：US06145091A

公开(公告)日：2000-11-07

申请号：US259408

申请日：1999-02-22

申请人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

发明人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

IPC分类号： G06F3/06 ,  G06F11/10 ,  G06F12/08 ,  G06F12/16 ,  G06F13/10 ,  G06F11/00

CPC分类号： G06F11/1076 ,  G06F2211/1009

摘要： When receiving a write request from a processor, a control unit checks the condition of existence (or the presence/absence) in a cache for information necessary for generation of an updated value of a parity record, receives write data and reports the completion of the write request to the processor. In asynchronism with the write request from the processor, the control unit performs a load process for that information among the information necessary for generation of the updated value of the parity record which may be prepared in asynchronism with the write request from the processor and a write after process for the updated value of the parity record.

公开(公告)号：US07320089B2

公开(公告)日：2008-01-15

申请号：US10945882

申请日：2004-09-22

申请人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

发明人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

IPC分类号： G06F11/00

CPC分类号： G06F11/1076 ,  G06F2211/1009

摘要： When receiving a write request from a processor, a control unit checks the condition of existence (or the presence/absence) in a cache for information necessary for generation of an updated value of a parity record, receives write data and reports the completion of the write request to the processor. In asynchronism with the write request from the processor, the control unit performs a load process for that information among the information necessary for generation of the updated value of the parity record which may be prepared in asynchronism with the write request from the processor and a write after process for the updated value of the parity record.

摘要翻译： 当从处理器接收到写请求时，控制单元检查高速缓存中存在（或存在/不存在）的状况，以产生奇偶校验记录的更新值所需的信息，接收写数据并报告完成 向处理器写请求。 在与来自处理器的写入请求不同步的情况下，控制单元在产生可能与来自处理器的写请求异步准备的奇偶校验记录的更新值所需的信息之间执行该信息的加载处理和写入 后续处理更新的奇偶校验记录值。

公开(公告)号：US06757839B2

公开(公告)日：2004-06-29

申请号：US10319501

申请日：2002-12-16

申请人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

发明人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

IPC分类号： G06F1100

CPC分类号： G06F11/1076 ,  G06F2211/1009

摘要： When receiving a write request from a processor, a control unit checks the condition of existence (or the presence/absence) in a cache for information necessary for generation of an updated value of a parity record, receives write data and reports the completion of the write request to the processor. In asynchronism with the write request from the processor, the control unit performs a load process for that information among the information necessary for generation of the updated value of the parity record which may be prepared in asynchronism with the write request from the processor and a write after process for the updated value of the parity record.

摘要翻译： 当从处理器接收到写请求时，控制单元检查高速缓存中存在（或存在/不存在）的状况，以产生奇偶校验记录的更新值所需的信息，接收写数据并报告完成 向处理器写请求。 在与来自处理器的写入请求不同步的情况下，控制单元在产生可能与来自处理器的写请求异步准备的奇偶校验记录的更新值所需的信息之间执行该信息的加载处理和写入 后续处理更新的奇偶校验记录值。

公开(公告)号：US06532549B2

公开(公告)日：2003-03-11

申请号：US09956792

申请日：2001-09-21

申请人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

发明人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

IPC分类号： G06F1100

CPC分类号： G06F11/1076 ,  G06F2211/1009

摘要： When receiving a write request from a processor, a control unit checks the condition of existence (or the presence/absence) in a cache for information necessary for generation of an updated value of a parity record, receives write data and reports the completion of the write request to the processor. In asynchronism with the write request from the processor, the control unit performs a load process for that information among the information necessary for generation of the updated value of the parity record which may be prepared in asynchronism with the write request from the processor and a write after process for the updated value of the parity record.

公开(公告)号：US06327673B1

公开(公告)日：2001-12-04

申请号：US09642815

申请日：2000-08-22

申请人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

发明人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

IPC分类号： G06F1100

CPC分类号： G06F11/1076 ,  G06F2211/1009

摘要： When receiving a write request from a processor, a control unit checks the condition of existence (or the presence/absence) in a cache for information necessary for generation of an updated value of a parity record, receives write data and reports the completion of the write request to the processor. In asynchronism with the write request from the processor, the control unit performs a load process for that information among the information necessary for generation of the updated value of the parity record which may be prepared in asynchronism with the write request from the processor and a write after process for the updated value of the parity record.

摘要翻译： 当从处理器接收到写请求时，控制单元检查高速缓存中存在（或存在/不存在）的状况，以产生奇偶校验记录的更新值所需的信息，接收写数据并报告完成 向处理器写请求。 在与来自处理器的写入请求不同步的情况下，控制单元在产生可能与来自处理器的写请求异步准备的奇偶校验记录的更新值所需的信息之间执行该信息的加载处理和写入 后续处理更新的奇偶校验记录值。

公开(公告)号：US4967341A

公开(公告)日：1990-10-30

申请号：US418343

申请日：1989-10-06

申请人： Akira Yamamoto ,  Tadashi Ohsone ,  Masashi Tsuchida ,  Hiroyuki Kitajima ,  Kazuhiro Satoh ,  Yoshiaki Yamashita ,  Nobuhiro Taniguchi ,  Kazuhiko Ohmachi ,  Shinichi Fukushima

发明人： Akira Yamamoto ,  Tadashi Ohsone ,  Masashi Tsuchida ,  Hiroyuki Kitajima ,  Kazuhiro Satoh ,  Yoshiaki Yamashita ,  Nobuhiro Taniguchi ,  Kazuhiko Ohmachi ,  Shinichi Fukushima

IPC分类号： G06F17/30

CPC分类号： G06F17/30501 ,  G06F17/30498 ,  Y10S707/99932

摘要： A set of sorted columns of one table stored in a DB machine are binary-searched by a hardware in synchronism with data transfer when another table is read from a disk unit, to select a row to be joined. Where a key word sequence to be searched is stored in ascending or descending order, determination of a maximum address in an area in which key words smaller than a search key are stored and determination of a maximum address in an area in which the key words smaller than or equal to the search key are stored are parallelly executed to determine the store range in one searching.

摘要翻译： 存储在DB机器中的一个表的一组排序列由硬件与数据传输同步地进行二进制搜索，当从磁盘单元读取另一个表时，选择要连接的行。 在要搜索的关键字序列以升序或降序存储的情况下，确定存储关键字小于搜索关键字的区域中的最大地址，并确定关键字较小的区域中的最大地址 存储的搜索关键字大于或等于并行执行，以便在一次搜索中确定存储范围。