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    • 2. 发明授权
    • Device and method for verifying independent reads and writes in a memory
array
    • 用于验证存储器阵列中的独立读和写的设备和方法
    • US5973971A
    • 1999-10-26
    • US2341
    • 1998-01-02
    • Salvatore Nicholas StorinoGregory John Uhlmann
    • Salvatore Nicholas StorinoGregory John Uhlmann
    • G01R31/28G11C29/34G11C29/36G11C29/00
    • G11C29/36
    • A device and method for verifying independent reads and writes in a memory array includes bit inserters in the array to simultaneously insert a predetermined value into multiple portions of the array. Each row may have a corresponding row bit inserter. Alternatively, or in addition, each memory cell may have a storage element bit inserter. A row bit inserter places a predetermined value at the inputs of a row write port. The storage element bit inserters pre-set memory cells to a predetermined value. To test the read circuitry, storage element bit inserters are set to a predetermined value, and a read is performed. If the value read from a memory cell does not match the value to which it was set, it can be inferred that the read circuitry is not functioning properly. If the values match, it can be inferred that the read circuitry is functioning properly. To test the write circuitry, a row bit inserter may be set to a predetermined value. A write is performed, followed by a read. If the value read from a memory cell matches the value to which the row bit inserter was set, it can be inferred that the write circuitry is functioning properly. If the values do not match, and if it has already been determined that the read circuitry is functioning properly, it can be inferred that the write circuitry is not functioning properly.
    • 用于验证存储器阵列中的独立读和写的装置和方法包括阵列中的位插入器,以将预定值同时插入阵列的多个部分。 每行可以具有相应的行位插入器。 或者或另外,每个存储器单元可以具有存储元件位插入器。 行位插入器将预定值放置在行写入端口的输入端。 存储元件位插入器将存储器单元预先设定为预定值。 为了测试读取电路,将存储元件位插入器设置为预定值,并执行读取。 如果从存储单元读取的值与其设置的值不匹配,则可以推断读取电路不能正常工作。 如果值匹配,则可以推断读取电路正常工作。 为了测试写入电路,可以将行位插入器设置为预定值。 执行写操作,然后进行读取。 如果从存储单元读取的值与设置了行位插入器的值相匹配,则可以推断写入电路正常工作。 如果值不匹配,并且如果已经确定读取电路正常工作,则可以推断出写入电路不能正常工作。
    • 4. 发明授权
    • Electrically programmable fuse sense circuit
    • 电可编程保险丝检测电路
    • US07528646B2
    • 2009-05-05
    • US11550960
    • 2006-10-19
    • Anthony Gus AipperspachDavid Howard AllenPhil PaoneDavid Edward SchmittGregory John Uhlmann
    • Anthony Gus AipperspachDavid Howard AllenPhil PaoneDavid Edward SchmittGregory John Uhlmann
    • H01H37/76H01H85/00
    • G11C17/16G11C17/18
    • A electrically programmable fuse sense circuit having an electrically programmable fuse and a reference resistance. A first current source is coupled, through a first switch, to the electrically programmable fuse. A second current source is coupled, through a second switch, to the reference resistance. A precharge signal enables the first current source, the second current source and closes the first switch and the second switch, creating voltage drops across the electrically programmable fuse and the reference resistance. When the precharge signal goes inactive, the first current source and the second current source are shut off, and, at the same time the first switch and the second switch are opened. A latching circuit uses a difference in the voltage drops when the precharge signal goes inactive to store a state of the electrically programmable fuse, indicative of whether the electrically programmable fuse is blown or unblown.
    • 一种具有电可编程熔丝和参考电阻的电可编程熔丝检测电路。 第一电流源通过第一开关耦合到电可编程保险丝。 第二电流源通过第二开关耦合到参考电阻。 预充电信号使得第一电流源,第二电流源能够闭合第一开关和第二开关,从而在电可编程保险丝和参考电阻之间产生电压降。 当预充电信号不起作用时,第一电流源和第二电流源被切断,同时第一开关和第二开关断开。 当预充电信号无效以存储电可编程熔丝的状态时,锁存电路使用电压降的差异,指示电可编程熔丝是否被吹制或未被吹出。
    • 7. 发明授权
    • Master-slave latch circuit for multithreaded processing
    • 用于多线程处理的主从锁存电路
    • US06629236B1
    • 2003-09-30
    • US09439581
    • 1999-11-12
    • Anthony Gus AipperspachMerwin Herscher AlfernessGregory John Uhlmann
    • Anthony Gus AipperspachMerwin Herscher AlfernessGregory John Uhlmann
    • G06F938
    • G06F9/30141G06F9/30116G06F9/3851
    • A master-slave latch circuit for a multithreaded processor stores information for multiple threads. The basic cell contains multiple master elements, each corresponding to a respective thread, selection logic coupled to the master elements for selecting a single one of the master outputs, and a single slave element coupled to the selector logic. Preferably, the circuit supports operation in a scan mode for testing purposes. In scan mode, one or more elements which normally function as master elements, function as slave elements. When operating in scan mode using this arrangement, the number of master elements in the pair of cells equals the number of slave elements, even though the number of master elements exceeds the number of slave elements during normal operation, permitting data to be successively scanned through all elements of the circuit. In an alternative embodiment, elements function as in scan mode during a HOLD mode of operation, and a feedback loop controlled by a HOLD signal is added to each pair of master/slave elements. The feedback loop drives the master element with the value of the slave.
    • 用于多线程处理器的主从锁存电路存储多线程的信息。 基本单元包含多个主元件,每个主元件对应于相应的线程,耦合到主元件的选择逻辑用于选择主输出中的单个一个,以及耦合到选择器逻辑的单个从元件。 优选地,电路支持扫描模式下的操作用于测试目的。 在扫描模式中,通常用作主元件的一个或多个元件用作从元件。 当使用这种布置在扫描模式下操作时,即使在正常操作期间主元件的数量超过从元件的数量,一对单元中的主元件的数量等于从元件的数量,允许数据被连续地扫描通过 电路的所有元素。 在替代实施例中,元件在保持操作模式期间起到扫描模式的作用,并且将由HOLD信号控制的反馈回路添加到每对主/从元件。 反馈回路以从机的值驱动主元件。