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    • 8. 发明申请
    • DATA INVERSION REGISTER TECHNIQUE FOR INTEGRATED CIRCUIT MEMORY TESTING
    • 用于集成电路存储器测试的数据反相寄存器技术
    • US20090094497A1
    • 2009-04-09
    • US11868509
    • 2007-10-07
    • Michael C. ParrisOscar Frederick Jones, Jr.
    • Michael C. ParrisOscar Frederick Jones, Jr.
    • G01R31/28
    • G01R31/31713G11C29/10G11C29/56G11C2029/0409
    • A data inversion register technique for integrated circuit memory testing in which data input signals are selectively inverted in a predetermined pattern to maximize the probability of identifying failures during testing. In accordance with the technique of the present invention, on predetermined input/outputs (I/Os,) data inputs may be inverted to create a desired test pattern (such as data stripes) which are “worst case” for I/O circuitry or column stripes which are “worst case” for memory arrays. A circuit in accordance with the technique of the present invention then matches the pattern for the data out path, inverting the appropriate data outputs to obtain the expected tester data. In this way, the test mode is transparent to any memory tester.
    • 一种用于集成电路存储器测试的数据反转寄存器技术,其中数据输入信号以预定模式选择性地反转,以最大化在测试期间识别故障的可能性。 根据本发明的技术,在预定的输入/输出(I / O))数据输入可以被反转以创建对于I / O电路是“最坏情况”的期望的测试图案(诸如数据条纹),或者 列条纹是存储器阵列的“最坏情况”。 根据本发明的技术的电路然后匹配数据输出路径的模式,反转适当的数据输出以获得预期的测试器数据。 这样,测试模式对任何记忆测试仪都是透明的。
    • 9. 发明申请
    • LOW SKEW CLOCK DISTRIBUTION TREE
    • 低穗时钟分配树
    • US20090015311A1
    • 2009-01-15
    • US11776371
    • 2007-07-11
    • Michael C. ParrisOscar Frederick Jones, JR.
    • Michael C. ParrisOscar Frederick Jones, JR.
    • H03K3/84
    • G06F1/10G11C5/063G11C7/1051G11C7/1057G11C7/1078G11C7/1084G11C7/22G11C7/222G11C11/4076G11C11/4093
    • A clock distribution tree for an integrated circuit memory includes a set of data drivers, a corresponding set of input buffers coupled to the data drivers, a first clock distribution tree coupled to the data drivers, and a second clock distribution tree coupled to the input buffers, wherein the first and second clock distribution tree are substantially matched and mirrored distribution trees. The line width of the first clock distribution tree is substantially the same as the line width of the second clock distribution tree. The line spacing of the first clock distribution tree is substantially the same as the line spacing of the second clock distribution tree. Numerous topologies for the first and second clock distribution trees can be accommodated, as long as they are matched and mirrored. Valid times for the integrated circuit memory are maximized and data and clock skew is minimized.
    • 用于集成电路存储器的时钟分配树包括一组数据驱动器,耦合到数据驱动器的相应的输入缓冲器组,耦合到数据驱动器的第一时钟分配树,以及耦合到输入缓冲器的第二时钟分配树 ,其中所述第一和第二时钟分布树基本匹配并且镜像分布树。 第一时钟分配树的线宽基本上与第二时钟分配树的线宽相同。 第一时钟分配树的行间距基本上与第二时钟分配树的行间隔相同。 只要匹配和镜像,可以容纳第一和第二时钟分配树的许多拓扑。 集成电路存储器的有效时间最大化,数据和时钟偏移最小化。
    • 10. 发明授权
    • Simultaneous function dynamic random access memory device technique
    • 同步功能动态随机存取存储器件技术
    • US06643212B1
    • 2003-11-04
    • US10125758
    • 2002-04-18
    • Oscar Frederick Jones, Jr.Michael C. Parris
    • Oscar Frederick Jones, Jr.Michael C. Parris
    • G11C800
    • G11C7/22G11C7/1042G11C2207/104G11C2207/108G11C2207/2281G11C2207/229
    • A simultaneous function dynamic random access memory (“DRAM”) technique of particular applicability to DRAMs, synchronous DRAMs (“SDRAM”), specialty DRAMs, embedded DRAMs, embedded SDRAMs and the like which enables the execution of “read”, “write”, “active” and “precharge” commands on a single clock cycle. The technique of the present invention is of especial applicability to embedded memory arrays or specialty DRAMs where the number of input signals to the DRAM are not necessarily limited by mechanical component packaging constraints or component pin counts. In general, the advantages of the technique are obtained through the use of separate address fields, including bank addresses, for “read” and “write” commands, and separate bank addresses for “active” and “precharge” commands with a resultant highly parallel operational functionality.
    • 特别适用于DRAM,同步DRAM(“SDRAM”),专用DRAM,嵌入式DRAM,嵌入式SDRAM等的同时功能动态随机存取存储器(“DRAM”)技术,其能够执行“读取”,“写入” ,“活动”和“预充电”命令。 本发明的技术特别适用于嵌入式存储器阵列或特殊DRAM,其中DRAM的输入信号的数量不一定受到机械部件封装约束或分量引脚计数的限制。 一般来说,该技术的优点是通过使用单独的地址字段(包括用于“读取”和“写入”命令的存储区地址)来获得,并且通过使用高度并行的“高效”命令来分离“活动”和“预充电”命令的存储体地址 操作功能。