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    • 3. 发明授权
    • Memory access mechanism for a parallel processing computer system with
distributed shared memory
    • 具有分布式共享存储器的并行处理计算机系统的存储器访问机制
    • US5898883A
    • 1999-04-27
    • US368618
    • 1995-01-04
    • Hiroaki FujiiToshiaki TaruiNaonobu Sukegawa
    • Hiroaki FujiiToshiaki TaruiNaonobu Sukegawa
    • G06F15/17G06F12/02G06F15/16
    • G06F12/0284
    • To increase the capacity of usable memory of a parallel processing computer system as a whole and effectively utilize the address space without waste, a variable-length Global/Local allocation field is provided in a fixed-length address. When the field is locally set, the address is used as an address of a local memory area to which the local processor refers. When the allocation is globally set, the remaining address is a variable length logical processor number (this number is converted into a physical processor number) and a variable length offset address, for specifying a global memory area belonging to a processor out of the global areas of memories of a group of some of the processors, which global memory can be referred to by all the processors of the groups. A memory access interface executes memory access to the local or global area of the memory of the local processor or to the global area of the memory of another processor.
    • 为了增加整个并行处理计算机系统的可用存储器的容量并有效地利用地址空间而不浪费,可变长度的全局/局部分配字段被提供在固定长度的地址中。 当本地设置该字段时,该地址被用作本地处理器引用的本地存储器区域的地址。 当分配被全局设置时,剩余地址是可变长度的逻辑处理器号码(该数字被转换成物理处理器号码)和可变长度偏移地址,用于指定属于全局区域中的处理器的全局存储器区域 一组处理器的存储器,该组的所有处理器可以引用全局存储器。 存储器访问接口执行对本地处理器的存储器的本地或全局区域或另一处理器的存储器的全局区域的存储器访问。
    • 4. 发明授权
    • Access control method for a shared main memory in a multiprocessor based
upon a directory held at a storage location of data in the memory after
reading data to a processor
    • 基于在将数据读取到处理器之后存储在存储器中的数据的存储位置的目录,在多处理器中的共享主存储器的访问控制方法
    • US5606686A
    • 1997-02-25
    • US328759
    • 1994-10-24
    • Toshiaki TaruiNaonobu SukegawaHiroaki FujiiKatsuyoshi Kitai
    • Toshiaki TaruiNaonobu SukegawaHiroaki FujiiKatsuyoshi Kitai
    • G06F15/17G06F12/08G06F15/173
    • G06F12/0817G06F12/0813G06F15/17393G06F2212/2542
    • A main memory shared by plural processing units in a parallel computer system is composed of plural partial main memories. A directory for each data line of the main memory is generated after the data line has been cached in one of the processing units. The directory is held in one of the partial main memories in place of the data line. The directory indicates a processing unit which has cached the data line. A status bit C provided for the data line is set. If a subsequent read request is given to the data line, the status C bit is checked and the directory is used to identify a processing unit that has cached the data line. The request is transferred to the identified processing unit, and the data line is transferred from that processing unit to the processing unit that has issued the request. If a processing unit that has cached the data line has replaced the data line, it is checked if there is a processing unit that has cached the data line. If there is none, the data line is written back into the one partial main memory. If there is, the data line is not written back. Another status bit RO is also used for each data line. It indicates if the data line is read only. If a data line is read only, generation of the directory and storing it in the partial main memory is prohibited.
    • 并行计算机系统中的多个处理单元共享的主存储器由多个部分主存储器构成。 在数据线已被缓存在一个处理单元中之后,生成主存储器的每条数据线的目录。 该目录被保存在一部分主存储器中以代替数据线。 该目录指示已经缓存数据线的处理单元。 设置为数据线提供的状态位C。 如果向数据线提供后续的读取请求,则检查状态C位,并使用该目录来标识缓存数据线的处理单元。 该请求被传送到所识别的处理单元,并且数据线从该处理单元传送到已经发出请求的处理单元。 如果缓存数据线的处理单元已经取代了数据线,则检查是否存在缓存数据行的处理单元。 如果没有,则数据线被写回到一个部分主存储器中。 如果有,数据行不会被写回。 每个数据线也使用另一个状态位RO。 它指示数据行是否为只读。 如果数据线是只读的,则禁止生成目录并将其存储在部分主存储器中。
    • 7. 发明授权
    • Endoscope optical system and endoscope
    • 内镜光学系统和内窥镜
    • US08767320B2
    • 2014-07-01
    • US13984169
    • 2012-02-07
    • Hiroaki Fujii
    • Hiroaki Fujii
    • G02B21/02G02B13/04G02B9/34G02B23/24
    • G02B23/243A61B1/00163A61B1/00174G02B9/34G02B13/0015G02B13/04G02B23/2423G02B23/2438
    • An endoscope optical system, including a front group and a rear group arranged in this order from an object side such that an aperture stop is arranged between the front and rear groups, wherein the front group includes a negative lens and a positive lens arranged in this order from the object side, the rear group includes a positive lens and a cemented lens arranged in this order from the object side, and when f (unit: mm) denotes a focal length of an entire endoscope optical system, EX (unit: mm) denotes a distance (which takes a minus sign on the object side with respect to an image plane) from the image plane to an exit pupil, and f2 (unit: mm) denotes a focal length of the rear group, the endoscope optical system satisfies conditions: −10
    • 一种内窥镜光学系统,包括从物体侧依次排列的前组和后组,使得前组和后组之间布置孔径光阑,其中前组包括负透镜和布置在该组中的正透镜 从物体侧起,后组包括从物体侧依次排列的正透镜和胶合透镜,并且当f(单位:mm)表示整个内窥镜光学系统的焦距时,EX(单位:mm )表示从图像平面到出射光瞳的距离(相对于像面在物体侧取负号),f2(单位:mm)表示后组的焦距,内窥镜光学系统 满足条件:-10