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    • 3. 发明授权
    • High-frequency bus system
    • 高频总线系统
    • US06266730B1
    • 2001-07-24
    • US09507303
    • 2000-02-18
    • Donald V. PerinoBilly Wayne Garrett, Jr.Haw-Jyh LiawDavid NguyenSrinivas NimmagaddaJames A. GasbarroRichard DeWitt Crisp
    • Donald V. PerinoBilly Wayne Garrett, Jr.Haw-Jyh LiawDavid NguyenSrinivas NimmagaddaJames A. GasbarroRichard DeWitt Crisp
    • H05K102
    • G11C5/063G06F13/1684G06F13/4086G06F13/409G06F13/4247G11C5/04G11C7/1048H05K1/023H05K1/0246H05K1/0248H05K1/14H05K7/1459H05K2201/044H05K2201/09263H05K2201/10022H05K2201/10159H05K2201/10689
    • A high frequency bus system which insures uniform arrival times of high-fidelity signals to the devices on the high frequency bus, despite the use of the bus on modules and connectors. A high frequency bus system includes a first bus segment having one or more devices connected between a first and a second end. The first bus segment has at least a pair of transmission lines for propagating high frequency signals and the devices are coupled to the pair of transmission lines. The high frequency bus system also includes a second bus segment which has no devices connected to it. The second bus segment also has at least a pair of transmission lines for propagating high frequency signals. The first end of the first segment and second end of the second segment are coupled in series to form a chain of segments and when two signals are introduced to the first end of the second bus segment at the substantially the same time, they arrive at each device connected to the first bus segment at substantially the same time. Also, when two signals originate at a device connected to the first bus segment at substantially the same time, they arrive at the first end of the second bus segment at substantially the same time. Uniform arrival times hold despite the use of connectors to couple the segments together, despite the segments being located on modules, without the need for stubs, despite the presence of routing turns in the segments and despite the type of information, such as address, data or control, carried by the signals.
    • 尽管在模块和连接器上使用了总线,但高频总线系统确保高保真信号的均匀到达时间到高频总线上的设备。 高频总线系统包括具有连接在第一和第二端之间的一个或多个设备的第一总线段。 第一总线段具有用于传播高频信号的至少一对传输线,并且该装置耦合到该对传输线。 高频总线系统还包括没有与其连接的设备的第二总线段。 第二总线段还具有用于传播高频信号的至少一对传输线。 第二段的第一段和第二端的第一端被串联耦合以形成链段,并且当两个信号在基本相同的时间被引入第二总线段的第一端时,它们到达每一个 设备在大致相同的时间连接到第一总线段。 而且,当两个信号在基本相同的时间起始于连接到第一总线段的设备时,它们在几乎相同的时间到达第二总线段的第一端。 尽管使用连接器将段连接在一起,尽管分段位于模块上,而不需要存根,尽管存在分段中的路由选择,并且尽管信息类型(例如地址,数据)也是均匀到达时间 或控制,由信号携带。
    • 6. 发明授权
    • Memory system including a memory device having a controlled output driver characteristic
    • 存储器系统,包括具有受控输出驱动器特性的存储器件
    • US06608507B2
    • 2003-08-19
    • US10230931
    • 2002-08-29
    • Billy Wayne Garrett, Jr.John B. DillonMichael Tak-Kei ChingWilliam F. StonecypherAndy Peng-Pui ChanMatthew M. Griffin
    • Billy Wayne Garrett, Jr.John B. DillonMichael Tak-Kei ChingWilliam F. StonecypherAndy Peng-Pui ChanMatthew M. Griffin
    • H03B100
    • G11C7/1057G06F13/4077G11C7/1051G11C7/106H03K19/00384H03K19/018585H04L25/0266H04L25/0272H04L25/028H04L25/0282H04L25/0298
    • A memory system and method of adjusting an output driver characteristic of a memory device that is included in the memory system. The method includes providing a command to the memory device that specifies a calibration mode and, during the calibration mode, driving a voltage level onto the first signal line using a first output driver. A first voltage level is derived from an amount of voltage swing generated by the first output driver driving the voltage level onto the first signal line. The method also includes: actively coupling a first comparator to the first signal line; when the first comparator is coupled to the first signal line, comparing the first voltage level with a reference voltage using the first comparator; and adjusting the amount of voltage swing to arrive at a calibrated voltage swing level. In addition, the method includes actively isolation the first comparator from the first signal line upon exiting the calibration mode. The memory device is operable in a normal read operation upon exiting the calibration mode. During the normal read operation, the first output driver is operable to output data onto the first signal line in accordance with the calibrated voltage swing level.
    • 一种存储系统和调整包含在存储器系统中的存储器件的输出驱动器特性的方法。 该方法包括向存储器件提供指定校准模式的命令,并且在校准模式期间,使用第一输出驱动器将电压电平驱动到第一信号线上。 第一电压电平是从驱动第一信号线上的电压电平的第一输出驱动器产生的电压摆幅的量导出的。 该方法还包括:主动地将第一比较器耦合到第一信号线; 当所述第一比较器耦合到所述第一信号线时,使用所述第一比较器将所述第一电压电平与参考电压进行比较; 并且调整电压摆幅的量以达到校准的电压摆幅水平。 此外,该方法包括在退出校准模式时将第一比较器与第一信号线主动隔离。 存储器件在退出校准模式时可在正常读取操作中操作。 在正常读取操作期间,第一输出驱动器可操作以根据校准的电压摆幅电平将数据输出到第一信号线上。