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    • 1. 发明授权
    • Semiconductor memory
    • 半导体存储器
    • US5301142A
    • 1994-04-05
    • US895598
    • 1992-06-08
    • Yukihide SuzukiMasaya MuranakaHiromi MatsuuraYoshinobu NakagomeHitoshi TanakaEiji YamasakiToshiyuki Sakuta
    • Yukihide SuzukiMasaya MuranakaHiromi MatsuuraYoshinobu NakagomeHitoshi TanakaEiji YamasakiToshiyuki Sakuta
    • G11C11/401G11C7/10G11C11/409G11C29/00G11C29/34H01L21/8242H01L27/10H01L27/108G11C13/00
    • G11C7/10
    • Each of a plurality of memory arrays is divided into a plurality of memory mats MAT00L-MAT07L to MAT10R-MAT17R in directions in which word lines and bit lines extend. First common data lines, that is, sub-IO lines, are provided which correspond to these memory mats and which are disposed in parallel to the word lines. Bit lines designating the corresponding memory mats are selectively connected to the first common data lines. Second common data lines, that is, main IO line groups MIOG0-MIOG7, are also provided and are disposed in parallel to the bit lines. Designated sub-IO lines are selectively connected to the second common data lines. Moreover, a plurality of main amplifiers forming a main amplifier unit MAU0 are orderly arranged in the direction in which the bit lines extend. These include a first main amplifier comprising a static current mirror amplifier which requires a relatively large operating current and a second main amplifier comprising a dynamic CMOS latch amplifier which requires only a relatively small operating current. These main amplifiers are put to proper use in conformity with the operating mode involved. By virtue of these arrangements, the number of parallel bits in a multibit parallel test mode of a dynamic RAM becomes expandable without being restricted by the number of the sub-IO lines correspondingly provided for each memory mat.
    • 在字线和位线延伸的方向上,多个存储器阵列中的每一个被分成多个存储器块MAT00L-MAT07L到MAT10R-MAT17R。 提供了与这些存储垫对应并且与字线平行设置的第一公共数据线,即子IO线。 指定对应的存储器垫的位线选择性地连接到第一公共数据线。 还提供第二公共数据线,即主IO线组MIOG0-MIOG7,并且与位线并行设置。 指定的子IO线选择性地连接到第二公共数据线。 此外,形成主放大器单元MAU0的多个主放大器在位线延伸的方向上有序排列。 这些包括第一主放大器,其包括需要相对大的工作电流的静态电流镜放大器,以及包括仅需要较小工作电流的动态CMOS锁存放大器的第二主放大器。 这些主放大器按照所涉及的工作模式正确使用。 由于这些布置,动态RAM的多位并行测试模式中的并行比特数可以扩展,而不受对应于每个存储器垫的子IO线数的限制。
    • 9. 发明授权
    • Low power multiplier
    • 低功率乘法器
    • US5818743A
    • 1998-10-06
    • US426349
    • 1995-04-21
    • Wai LeeToshiyuki Sakuta
    • Wai LeeToshiyuki Sakuta
    • G06F7/52
    • G06F7/5338G06F2207/3884
    • A digital multiplier 110 for multiplying a plurality of multiplicand signals X0-X23 representing a multiplicand and a plurality of multiplier signals Y0-Y23 representing a multiplier. In it, a plurality of intermediate results signals, such as partial product signals, are generated from the multiplicand signals and the multiplier signals. A plurality of adder circuits 40 are also provided for adding the intermediate results signals to generate a plurality of final result signals representing the result of multiplying the multiplicand and the multiplier, wherein at least some of the adder circuits receive first signals representing intermediate addition results from at least two prior adder stages and also receive second signals representing intermediate results generated as the result of only a single addition. Finally, a plurality of delay elements 70 are placed in selected second signal lines so as to delay the arrival of the second signals to the at least some of the adder circuits so as to synchronize the arrival of the inputs to the at least some of the adder circuits.
    • 数字乘法器110,用于乘以表示被乘数的多个被乘数信号X0-X23和表示乘法器的多个乘法器信号Y0-Y23。 在其中,从乘法器信号和乘法器信号产生多个中间结果信号,例如部分乘积信号。 还提供了多个加法器电路40,用于将中间结果信号相加以产生表示乘法和乘法器相乘的结果的多个最终结果信号,其中至少一些加法器电路接收表示中间加法结果的第一信号, 至少两个先前的加法器级并且还接收表示作为仅一次加法的结果产生的中间结果的第二信号。 最后,将多个延迟元件70放置在所选择的第二信号线中,以便将第二信号的到达延迟到至少一些加法器电路,以便将输入的到达同步到至少一些 加法器电路。