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    • 3. 发明专利
    • Cell arrangement method for semiconductor integrated circuit
    • 用于半导体集成电路的单元布置方法
    • JP2003016126A
    • 2003-01-17
    • JP2001196497
    • 2001-06-28
    • Hitachi LtdHitachi Software Eng Co Ltd日立ソフトウエアエンジニアリング株式会社株式会社日立製作所
    • SAKAGAMI TOMONARISHIGEGAKI MASATOYAMADA HIROMITSUMIZUTANI KAZUHIRO
    • G06F17/50H01L21/82H01L21/822H01L27/04
    • PROBLEM TO BE SOLVED: To provide a cell arrangement method for a semiconductor integrated circuit, that can shorten delay and wire length by reducing the number of critical nets.
      SOLUTION: A logic file and a library are inputted first of all, and cells, in which the number of terminals constituting a net and the number of input/ output terminals of cells constituting the net are two respectively, and the total of the widths of the cells constituting the net is not longer than a given, are extracted as a cell group candidate (301 and 302). In the case there are candidate cells, cell groups for cell grouping candidates are ranked with the driving performance rates of the cells that are a candidate, the number of input/output terminals to be reduced by grouping and the number of pins for the cells to be grouped as evaluation values (303 and 304). Then, grouping processing is applied to grouping candidate cell groups in accordance with the obtained ranking to return to processing from the step 302 (305). When all the candidate cells are processed and no candidate cell retains in check of the step 303, a grouped cell is handled in the same manner as that of a normal cell to be subjected to arrangement processing (306).
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:提供一种用于半导体集成电路的电池布置方法,其可以通过减少关键网的数量来缩短延迟和电线长度。 解决方案:首先输入逻辑文件和库,并且其中构成网络的终端的数量和构成网络的小区的输入/输出端子的数量的单元分别为两个, 构成网络的小区不长于给定的小区被提取为小区组候选(301和302)。 在存在候选小区的情况下,将用于小区分组候选的小区组作为候选的小区的驱动性能率,通过分组减少的输入/输出终端的数量和小区的引脚数量 被分组为评估值(303和304)。 然后,根据获得的排序将分组处理应用于分组候选小区组,以返回到步骤302(305)的处理。 当处理所有候选小区并且没有候选小区保留步骤303的检查时,以与要进行布置处理的正常小区相同的方式处理分组小区(306)。
    • 5. 发明专利
    • Method and system for trading information processing performance
    • 交易信息处理性能的方法和系统
    • JP2007140906A
    • 2007-06-07
    • JP2005333817
    • 2005-11-18
    • Hitachi Ltd株式会社日立製作所
    • HIRASAWA MITSURUKOMIYA HIROSHIOTOSE MICHIKOSHIGEGAKI MASATO
    • G06F9/50G06Q30/06G06Q50/00G06Q50/10
    • PROBLEM TO BE SOLVED: To provide an information processing performance trading system for measuring a processing time and calculating use charge in consideration of a processing time limit, information processing performance, and a limited cost of a site to receive the information processing performance, as well as the information processing performance and a schedule of a site to provide the information processing performance according to the above trade request information. SOLUTION: In the information processing performance trading system, the information processing performance trade request information of the information processing performance receiving site 108 is transmitted to an information processing performance trading site 101 for mediating the trade of information processing performance between an information processing performance receiving site 108 and an information processing performance providing site 11, which assigns information processing performance providing sites 117 and 118 based on the trade request information of the information processing performance receiving site 108, to transmit the result of processing in the information processing performance providing sites 117 and 118 to the information processing performance receiving site 108. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种信息处理性能交易系统,用于测量处理时间并考虑处理时间限制,信息处理性能和接收信息处理性能的站点的有限成本来计算使用费用 以及根据上述交易请求信息提供信息处理性能的站点的信息处理性能和时间表。 解决方案:在信息处理性能交易系统中,信息处理性能接收站点108的信息处理性能交易请求信息被发送到信息处理性能交易站点101,用于中介信息处理性能的交易 性能接收站点108和信息处理性能提供站点11,其基于信息处理性能接收站点108的交易请求信息来分配信息处理性能提供站点117和118,以将处理结果发送到信息处理性能提供 站点117和118到信息处理性能接收站点108.版权所有:(C)2007,JPO&INPIT
    • 6. 发明专利
    • LOGICAL SYNTHESIS SYSTEM
    • JP2001229218A
    • 2001-08-24
    • JP2000043532
    • 2000-02-16
    • HITACHI LTD
    • ADACHI KAZUHIROSHIGEGAKI MASATO
    • G06F17/50
    • PROBLEM TO BE SOLVED: To provide a logical synthesis system capable of preventing a delay constraint violation of layout results without postponing the design time by making the difference between a wiring length assumed at the time when a logical synthesis is performed and the real wiring length of the layout results small. SOLUTION: This system has a means dividing a synthetic object block into a plurality of subblocks in the case of performing logical synthesis, a means deciding a floor plan inside the synthetic object block of the divided subblocks, a means individually calculating a wiring length inside each block, a means individually calculating a wiring length between subblocks from the floor plan, means individually calculating delay on the basis of the calculated wiring lengths, a logically optimizing means on the basis of the delay calculation results, and a means outputting the divided subblocks and the floor plan.
    • 8. 发明专利
    • WIRING DISPLAY METHOD
    • JPH0950446A
    • 1997-02-18
    • JP20066695
    • 1995-08-07
    • HITACHI LTD
    • SHIGEGAKI MASATONAKAJIMA HIROYUKI
    • G06F17/50
    • PROBLEM TO BE SOLVED: To easily recognize the congestion degree of wiring in the case of a reduction display and to perform display at a high speed by displaying the wiring thinner than a pixel probabilitically. SOLUTION: The wiring thinner than the pixel is plotted with a probability proportional to the thinness on a display screen. That is, when the wiring is thinner than the pixel, the wiring is plotted with lower probability when the wiring width is thinner and with higher probability when it is thicker. As the easiest plotting probability, a method for taking the wiring width itself for the probability when the wring width is 1 or less than 1 can be mentioned. A monotone increase function for which generally it is 0 when the wiring width is 0 and it is 1 when it is 1 or more than 1 is sufficient. It is empirically obtained that the larger part of processing time is spent within a plotting routine in normal graphic display. Thus, when the number of times that the plotting routine is called is less, the processing time is shortened that mach. By this method, the number of times when the plotting routine is called is actually reduced and the display speed is accelerated compared to the case of plotting all the wiring.
    • 9. 发明专利
    • CHIP LAYOUT METHOD FOR LSI
    • JPS61267344A
    • 1986-11-26
    • JP10811385
    • 1985-05-22
    • HITACHI LTD
    • SHIGEGAKI MASATOMIURA JIHEI
    • H01L21/822G06F17/50H01L21/82H01L27/02H01L27/04
    • PURPOSE:To sufficiently reduce useless regions by a method wherein a proper combination of random logical block dimensions is chosen by using a linear programming method for a reduced chip area when the required width is estimated of a wiring region between blocks arranged relative to each other. CONSTITUTION:In view of the relations between the relative positioning of given blocks and logical connections, the minimum width required is estimated for a wiring region between blocks, the blocks are properly arranged with consideration given to the width of wiring regions between the blocks, and then wiring is accomplished between the blocks for the completion of chip layout. As a method for selecting a proper block layout out of many candidates different from each other in width and height, linear relations in terms of coordinates and dimensions are utilized for the determination of conditions whereunder the necessary width is secured of wiring regions, and the conditions for designating a block layout candidate is expressed in linear conditions covering the region including proper block dimensions. A problem is solved involving a linear program for the minimization of a target function expressed in the form of a combination of chip width and height, whereby the area occupied by chips is reduced to the minimum.