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    • 4. 发明授权
    • Apparatus and method to interface two different clock domains
    • 接口两个不同时钟域的设备和方法
    • US07296174B2
    • 2007-11-13
    • US10822534
    • 2004-04-12
    • James D. Kelly
    • James D. Kelly
    • G06F1/00G06F1/04G06F3/00
    • G06F5/06
    • A gearbox is placed between two clock domains to allow data to be transferred from one domain to the other. Although the two domains may operate at the same clock frequency, typically one domain has a faster clock speed than the other. The gearbox is disposed between the two clock domains to control timing of data transfer from one to the other, by selecting a pattern which identifies when data is made transparent for the transfer. The gearbox allows a number of clock ratios to be selected, so that a particular clock ratio between the two domains may be readily selected in the gearbox for the data transfer.
    • 齿轮箱放置在两个时钟域之间,以允许数据从一个域传输到另一个域。 尽管两个域可以在相同的时钟频率下工作,但通常一个域具有比另一个更快的时钟速度。 齿轮箱设置在两个时钟域之间,以通过选择识别数据何时使传输透明的模式来控制数据从一个到另一个的数据传输的定时。 齿轮箱允许选择多个时钟比,使得两个域之间的特定时钟比可以容易地在用于数据传输的变速箱中选择。
    • 5. 发明授权
    • Memory cell dual protection
    • 存储单元双重保护
    • US07206110B2
    • 2007-04-17
    • US11004595
    • 2004-12-03
    • James D. KellyShoucheng Zhang
    • James D. KellyShoucheng Zhang
    • G02B26/00G02F1/03
    • G02B26/0841B81B7/0029B81B2201/047
    • A spatial light modulator for use in projection display applications is provided. The spatial light modulator includes a substrate including a plurality of electrically active circuits and an electrode layer electrically coupled to at least one of the plurality of electrically active circuits. In one embodiment, the electrode layer includes a semi-continuous layer with at least one optical path. The spatial light modulator also includes a shielding layer electrically isolated from the electrode layer and disposed between the substrate and the plurality of electrically active circuits and an electrical connector coupling the shielding layer to a reference potential. In a specific embodiment, the shielding layer of the spatial light modulator converts incident light energy to electrical current and routes the current back to a source. In another specific embodiment, the shielding layer converts electrical field disturbance to electrical current and routes the current back to a source.
    • 提供了用于投影显示应用的空间光调制器。 该空间光调制器包括一个衬底,该衬底包括多个电活动电路和电耦合到多个电活动电路中的至少一个的电极层。 在一个实施例中,电极层包括具有至少一个光路的半连续层。 空间光调制器还包括与电极层电绝缘并且设置在基板和多个电活动电路之间的屏蔽层和将屏蔽层耦合到参考电位的电连接器。 在具体实施例中,空间光调制器的屏蔽层将入射光能转换成电流并将电流路由回到源。 在另一具体实施例中,屏蔽层将电场扰动转换成电流并将电流路由回到源。
    • 8. 发明授权
    • Memory control device with split read for ROM access
    • 存储器控制器,具有分离读取,用于ROM访问
    • US06336166B1
    • 2002-01-01
    • US08834922
    • 1997-04-07
    • James D. Kelly
    • James D. Kelly
    • G06F1200
    • G06F12/0638
    • In a computer memory system, memory access operations are significantly enhanced by employing a data path between the read only memory (ROM) and the system processor that is separate and independent from the data path or paths between the system processor and the random access memory (i.e., RAM or DRAM). The separate ROM data path includes a full cache line buffer which stores the ROM data until the system data bus is available to transport the ROM data. With a separate ROM data path, that includes a full cache line buffer, memory access operations are more efficiently conducted because a RAM access (i.e., a read or write operation) and a ROM access (i.e., a read operation) can be executed concurrently.
    • 在计算机存储器系统中,通过在只读存储器(ROM)和与数据路径分开独立的系统处理器之间的数据路径或系统处理器与随机存取存储器之间的路径 即RAM或DRAM)。 单独的ROM数据路径包括完整的高速缓存行缓冲器,其存储ROM数据,直到系统数据总线可用于传送ROM数据。 通过单独的ROM数据路径,其包括完整的高速缓存行缓冲器,由于可以同时执行RAM访问(即,读取或写入操作)和ROM访问(即,读取操作),因此更有效地执行存储器访问操作 。
    • 9. 发明授权
    • Method and apparatus for dynamic buffer allocation in a bus bridge for
pipelined reads
    • 用于流水线读取的总线桥中的动态缓冲器分配的方法和装置
    • US5802055A
    • 1998-09-01
    • US635646
    • 1996-04-22
    • William Todd KreinCharles M. FlaigJames D. Kelly
    • William Todd KreinCharles M. FlaigJames D. Kelly
    • G06F13/40G06F13/00
    • G06F13/4027G06F13/4059
    • A bus bridge circuit employs a dynamic allocation scheme that allows read transactions to be pipelined without deadlock and without the need for permanently reserving multiple buffer slots for read response transactions. The bus bridge circuit associates input and output buffers with a node and includes a state machine to monitor the number and type of transaction packets currently in slots that make up the buffers. In particular, the state machine monitors the number of transaction packets loaded in the output buffer slots, the number of outstanding read transactions for the node, and the number of read response transactions currently loaded in the output buffer. The state machine then allows the node to load a READ or WRITE transaction only if the monitored data indicates at least one of the buffer slots will be available to service a READ RESPONSE subsequently loaded by the node. The state machine launches READs to the node only when an unallocated buffer slot is available to service the corresponding READ RESPONSE.
    • 总线桥接电路采用动态分配方案,允许读取事务被流水线化而不会出现死锁,而不需要为读取响应事务永久保留多个缓冲区。 总线桥接电路将输入和输出缓冲器与节点相关联,并且包括状态机来监视当前在构成缓冲器的时隙中的事务包的数量和类型。 特别地,状态机监视加载在输出缓冲器槽中的事务数据包的数量,节点的未完成读取事务的数量以及当前加载在输出缓冲器中的读取响应事务的数量。 状态机然后允许节点加载READ或WRITE事务,只有当监视的数据指示至少一个缓冲区槽可用于服务节点随后加载的READ RESPONSE。 只有当未分配的缓冲槽可用于服务相应的READ RESPONSE时,状态机才会向节点启动READ。