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    • 25. 发明授权
    • Memory device and system including a low power interface
    • 存储器件和系统包括低功率接口
    • US06378018B1
    • 2002-04-23
    • US09169506
    • 1998-10-09
    • Ely K. TsernThomas J. HolmanRichard M. BarthAndrew V. AndersonPaul G. DavisCraig E. HampelDonald C. StarkAbhijit M. Abhyankar
    • Ely K. TsernThomas J. HolmanRichard M. BarthAndrew V. AndersonPaul G. DavisCraig E. HampelDonald C. StarkAbhijit M. Abhyankar
    • G06F1300
    • G06F13/4243G06F13/1694Y02D10/14Y02D10/151
    • A memory system includes an interconnect structure with a high speed channel and a low speed channel. A memory device with interface circuitry is coupled to the interconnect structure. The interface circuitry includes a high power interface for coupling to the high speed channel and a low power interface for coupling to the low speed channel. The memory device is operative in a low power mode and a high power mode. A memory controller is coupled to the high speed channel and the low speed channel of the interconnect structure. The memory controller is configured to transmit control information over the low speed channel to set the power mode of the memory device. The memory device is operative in a low power mode during which high power receiver circuits are turned off. The memory device is also operative in a nap mode during which an internal clock compensation circuit is left on to preserve phase information. The memory system may include multiple memory devices coupled to a daisy chained lead of the interconnect structure. The memory controller may be configured to apply control information to the interconnect structure as an encoded device identification word. The memory devices may each include a decoder for interpreting the encoded device identification word. The memory controller may be configured to apply a memory device selection signal to the interconnect structure to selectively enable the memory devices.
    • 存储器系统包括具有高速通道和低速通道的互连结构。 具有接口电路的存储器件耦合到互连结构。 接口电路包括用于耦合到高速通道的高功率接口和用于耦合到低速通道的低功率接口。 存储器件在低功率模式和高功率模式下工作。 存储器控制器耦合到互连结构的高速通道和低速通道。 存储器控制器被配置为通过低速信道发送控制信息以设置存储器件的功率模式。 存储器件在低功率模式下工作,在此期间高功率接收器电路被关闭。 存储器装置还可以在休眠模式下工作,在此模式期间内部时钟补偿电路被保留以保持相位信息。 存储器系统可以包括耦合到互连结构的菊花链引导件的多个存储器件。 存储器控制器可以被配置为将控制信息作为编码设备标识字应用于互连结构。 存储器件可以各自包括用于解释编码器件识别字的解码器。 存储器控制器可以被配置为将存储器件选择信号施加到互连结构以选择性地启用存储器件。
    • 26. 再颁专利
    • Memory and method for sensing sub-groups of memory elements
    • 用于感测存储器元件子组的存储器和方法
    • USRE37409E1
    • 2001-10-16
    • US09559836
    • 2000-04-26
    • Richard M. BarthDonald C. StarkLawrence LaiWayne S. Richardson
    • Richard M. BarthDonald C. StarkLawrence LaiWayne S. Richardson
    • G11C1300
    • G11C7/06G11C8/14G11C11/4085G11C11/4091
    • A memory and method of operation is disclosed. In one embodiment, the memory includes a group of memory cells divided into a plurality of subgroups. Sub word-lines are selectively coupled to main word lines, each sub-word line corresponding to a subgroup and is coupled to the memory cells in the row of the corresponding subgroup. Sense amplifier circuitry is coupled to the group of memory cells. The sense amplifier circuitry is divided into a plurality of sub-sensing circuits, each of the plurality of sub-sensing circuits selectively coupled to a corresponding one of the plurality of sub-groups. The memory includes a control mechanism to control the word lines and sub-sensing circuit (s) that are activated at any one time such that only those sub-word lines and sub-sensing circuits needed to perform memory operations are operated and consume power. In an alternate embodiment, the control mechanism controls the sub-word lines and sub-sensing circuits to enable substantially concurrent access to different sub-groups of memory cells from different rows of the memory.
    • 公开了一种存储器和操作方法。 在一个实施例中,存储器包括分成多个子组的一组存储器单元。 子字线选择性地耦合到主字线,每个子字线对应于一个子组,并且被耦合到相应子组的行中的存储器单元。 感测放大器电路耦合到该组存储器单元。 感测放大器电路被分成多个子感测电路,多个子感测电路中的每一个选择性地耦合到多个子组中对应的一个子组。 存储器包括一个控制机构,用于控制在任何一个时间被激活的字线和子感应电路,使得只需要执行存储器操作所需的子字线和子感测电路并消耗功率。 在替代实施例中,控制机构控制子字线和子感测电路以使得能够从存储器的不同行实质上并发地访问存储器单元的不同子组。
    • 28. 发明授权
    • Quadrature phase detector
    • 正交相位检测器
    • US5825209A
    • 1998-10-20
    • US807642
    • 1997-02-27
    • Donald C. StarkWayne S. Richardson
    • Donald C. StarkWayne S. Richardson
    • H03L7/085H03K5/26
    • H03L7/085
    • A quadrature phase detector includes a first load and a current source circuit. A first differential circuit and a second differential circuit coupled to the first load. In response to a first input signal, a first switching circuit couples the current source to the first differential circuit to form a first differential amplifier. The first switching circuit also couples the current source to the second differential circuit to form a second differential amplifier. The second differential amplifier is cross-coupled to the first differential amplifier. The first and second differential amplifiers are coupled to receive a differential second input signal, wherein the first and second input signals have a substantially different signal swing. A second switching circuit couples the current source to a second load in response to the complement of the first input signal. The cross-coupled first and second differential amplifiers provide a differential output signal corresponding to a quadrature phase error between the first and differential second input signals.
    • 正交相位检测器包括第一负载和电流源电路。 耦合到第一负载的第一差分电路和第二差分电路。 响应于第一输入信号,第一开关电路将电流源耦合到第一差分电路以形成第一差分放大器。 第一开关电路还将电流源耦合到第二差分电路以形成第二差分放大器。 第二差分放大器交叉耦合到第一差分放大器。 第一和第二差分放大器耦合以接收差分第二输入信号,其中第一和第二输入信号具有基本上不同的信号摆幅。 第二开关电路响应于第一输入信号的补码将电流源耦合到第二负载。 交叉耦合的第一和第二差分放大器提供对应于第一和第二输入信号之间的正交相位误差的差分输出信号。