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    • 68. 发明授权
    • Semiconductor memory device and method for reading data
    • 半导体存储器件和数据读取方法
    • US06337810B1
    • 2002-01-08
    • US09688324
    • 2000-10-12
    • Kazuyuki YamasakiTonomi Egawa
    • Kazuyuki YamasakiTonomi Egawa
    • G11C700
    • G11C7/1063G11C7/1018G11C7/1051
    • The provision of a semiconductor memory device for which access times in burst mode can be improved with no increase in the chip surface area and with no increase in power consumption. A latch pulse selection circuit 6 uses a control signal CA0T to output an input control signal SALF and a control signal SALS, to a first latch group within a latch circuit 7 as a latch pulse SAL0A, and to a second latch group within the latch circuit 7 as a latch pulse SAL1A, respectively. Based on a control signal YS0˜YS31 input from a column decoder circuit 11, a Y selector 12 is connected to a sense amplifier circuit 8 via Y switches connected to the corresponding digit lines. The sense amplifier circuit 8 comprises 256 sense amplifiers, and performs data evaluations of the signal YD0˜signal YD127 from the Y selector. A latch circuit 7 latches a data signal DT0˜data signal DT127 from the sense amplifier circuit 8 into a first latch group and a second latch group via latch signals SAL0 and SAL1 respectively.
    • 提供可以在不增加芯片表面积并且不增加功耗的情况下提高突发模式下的访问时间的半导体存储器件。 锁存脉冲选择电路6使用控制信号CA0T将输入控制信号SALF和控制信号SALS输出到作为锁存脉冲SAL0A的锁存电路7内的第一锁存组和锁存电路内的第二锁存组 7分别作为锁存脉冲SAL1A。 基于从列解码器电路11输入的控制信号YS0〜YS31,Y选择器12通过连接到对应数字线的Y开关连接到读出放大器电路8。 读出放大器电路8包括256个读出放大器,并且从Y选择器执行信号YD0〜信号YD127的数据评估。 锁存电路7经由锁存信号SAL0和SAL1将数据信号DT0〜数据信号DT127从读出放大器电路8锁存到第一锁存器组和第二锁存器组中。
    • 69. 发明授权
    • Semiconductor memory device with improved error correction
    • 具有改进的纠错的半导体存储器件
    • US06262925B1
    • 2001-07-17
    • US09573244
    • 2000-05-18
    • Kazuyuki Yamasaki
    • Kazuyuki Yamasaki
    • G11C700
    • G11C7/1006
    • When a cell of a memory cell array (C0 and C1) located at a position further from the word select line driver is selected, data that is read from the memory cell array (C0, C1) is sent via only sense amplifier circuits (S0, S1) to the output buffer circuit (OB), while data from the other memory cell array (C2˜C7) are sent via the sense amplifier circuits (S2˜S7), the error detection circuit (ECC1), the syndrome decoder circuit (ECC2) and the error correction circuits (CR2˜CR7) to the output buffer circuit (OB). Data are output while bypassing the ECC circuits for the memory cells (C0, C1) of which word select lines have larger resistance and capacitance that cause a significant delay in the reading by the sense amplifier compared to reading of the memory cells located near the start point of the word select line (critical read cell). For the memory cells (C2˜C7) of which word select lines have smaller resistance and capacitance of which reading by the sense amplifier is equivalent to that of the memory cells located near the start point of the word select line (critical read cell), data are output after correcting errors in the ECC circuits. With this constitution, the masked ROM that combines high-speed access capability and relieving effect and is advantageously applied to a large-capacity masked ROM with built-in ECC can be achieved.
    • 当选择位于距离字选择线驱动器更远的位置的存储单元阵列(C0和C1)的单元时,从存储单元阵列(C0,C1)读出的数据仅通过读出放大器电路(S0 ,S1)发送到输出缓冲器电路(OB),而来自另一存储单元阵列(C2〜C7)的数据经由读出放大器电路(S2〜S7),误差检测电路(ECC1),校正子解码器电路 (ECC2)和纠错电路(CR2〜CR7)输出到输出缓冲电路(OB)。 输出数据,同时旁路用于存储单元(C0,C1)的ECC电路,其中字选择线具有较大的电阻和电容,与读取位于开始附近的存储器单元相比,读出放大器的读取导致显着延迟 点选择行(关键读单元)。 对于字选择线具有较小电阻的存储单元(C2〜C7),读出放大器的读数等于位于字选择线(关键读单元)起点附近的存储单元的电容, 在ECC电路校正错误之后输出数据。 利用这种结构,可以实现将高速存取能力和缓解效果相结合的掩蔽ROM,并且有利地应用于具有内置ECC的大容量屏蔽ROM。
    • 70. 发明授权
    • Method and apparatus for biologically treating waste water containing fluorine
    • 用于生物处理含氟废水的方法和装置
    • US06228264B1
    • 2001-05-08
    • US09328880
    • 1999-06-09
    • Kazuyuki YamasakiTakashi ImaiTakashi Fujiwara
    • Kazuyuki YamasakiTakashi ImaiTakashi Fujiwara
    • C02F330
    • C02F3/1273C02F1/52C02F3/301C02F2101/14Y02W10/15
    • A waste water treatment method and apparatus uses microorganism-containing sludge to treat waste water containing fluorine and does not utilize any chemical reaction. For waste water treatment, a treatment tank has an anaerobic part having sludge containing microorganisms and an aerobic part having sludge containing microorganisms and communicating with the anaerobic part. Waste water to be treated and biological excess sludge are introduced into the anaerobic part. Once treated by the microorganisms, the water is filtered by a membranous separation device in the aerobic part, and output as treated water. In the treatment tank, the microorganisms are moved between the anaerobic part and aerobic part to enhance their ability to concentrate or accumulate therein fluorine or other substances contained in the waste water.
    • 废水处理方法和装置使用含微生物污泥处理含氟废水,不利用任何化学反应。 对于废水处理,处理槽具有含有微生物污泥的厌氧部分和含有微生物的污泥和需要厌氧部分连通的需氧部分。 待处理的废水和生物过剩的污泥被引入厌氧部分。 一旦用微生物处理,水被有氧部分中的膜分离装置过滤,并作为处理水输出。 在处理槽中,微生物在厌氧部分和需氧部分之间移动,以提高其在其中浓缩或积聚其中含有的氟或其它物质的能力。