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    • 54. 发明申请
    • Local Memories with Permutation Functionality for Digital Signal Processors
    • 具有数字信号处理器置换功能的本地存储器
    • US20090254718A1
    • 2009-10-08
    • US12399719
    • 2009-03-06
    • Eric BiscondiDavid J. HoyleTod D. Wolf
    • Eric BiscondiDavid J. HoyleTod D. Wolf
    • G06F15/76G06F12/06G06F12/00G06F9/02
    • G06F15/7857G06F9/30018G06F9/30032G06F9/3885
    • A digital signal processor (DSP) co-processor according to a clustered architecture with local memories. Each cluster in the architecture includes multiple sub-clusters, each sub-cluster capable of executing one or two instructions that may be specifically directed to a particular DSP operation. The sub-clusters in each cluster communicate with global memory resources by way of a crossbar switch in the cluster. One or more of the sub-clusters has a dedicated local memory that can be accessed in a random access manner, in a vector access manner, or in a streaming or stack manner. The local memory is arranged as a plurality of banks. In response to certain vector access instructions, the input data may be permuted among the banks prior to a write, or permuted after being read from the banks, according to a permutation pattern stored in a register.
    • 根据具有本地存储器的集群架构的数字信号处理器(DSP)协处理器。 架构中的每个集群包括多个子集群,每个子集群能够执行一个或两个指令,这些指令可以专门针对特定的DSP操作。 每个集群中的子集群通过集群中的交叉开关与全局内存资源进行通信。 子集群中的一个或多个具有专用本地存储器,其可以以随机存取方式,向量存取方式或以流或堆栈方式访问。 本地存储器被布置为多个存储体。 响应于某些向量访问指令,可以根据存储在寄存器中的置换模式,在写入之前在存储体之间排列输入数据,或者在从存储体读取之后被置换。
    • 58. 发明授权
    • 3-D graphics chip with embedded DRAMbuffers
    • 具有嵌入式DRAM缓冲器的3-D图形芯片
    • US06704023B1
    • 2004-03-09
    • US10341852
    • 2003-01-13
    • Tsailai Terry WuYudianto Halim
    • Tsailai Terry WuYudianto Halim
    • G09G536
    • G06F9/5016G06F9/3879G06F15/7857
    • A 3-D graphics chip includes independent internal DRAM buffers each having a wide bandwidth access bus for connection to a 3-D texture rendering drawing engine. The 3-D drawing engine takes advantage of a flexible embedded memory interface to reduce the traditional 3-D pipeline delay by a factor of 3. In a specific embodiment, each of three drawing processes—texture, Z, pixel—retrieves and stores information in a separate embedded drawing buffer via separate wide bandwidth access busses. Access to an external memory is provided via a separate external access bus. In another specific embodiment, the 3-D drawing engine accesses the embedded drawing buffers via read and write FIFO's to maximize the drawing process throughput.
    • 3-D图形芯片包括独立的内部DRAM缓冲器,每个缓冲器具有用于连接到3-D纹理渲染绘图引擎的宽带宽存取总线。 3-D绘图引擎利用灵活的嵌入式存储器接口来将传统的3-D流水线延迟降低3倍。在具体实施例中,三个绘制过程中的每一个 - 纹理,Z,像素 - 检索和存储信息 在单独的嵌入式绘图缓冲区中通过单独的宽带宽访问总线。 通过单独的外部访问总线提供对外部存储器的访问。 在另一个具体实施例中,3-D绘图引擎通过读写FIFO访问嵌入式绘图缓冲器,以最大化绘制过程的吞吐量。
    • 60. 发明授权
    • Digital signal processor having multiple access registers
    • 具有多个存取寄存器的数字信号处理器
    • US06496920B1
    • 2002-12-17
    • US09044088
    • 1998-03-18
    • Qiuzhen ZouGilbert C. SihJian Lin
    • Qiuzhen ZouGilbert C. SihJian Lin
    • G06F900
    • G06F9/30109G06F9/30014G06F9/30032G06F9/30043G06F9/30141G06F9/30149G06F9/3016G06F9/30167G06F9/3816G06F9/3824G06F9/3826G06F9/3853G06F9/3885G06F9/3893G06F12/04G06F15/7857
    • A method and circuit for digital signal processing. The disclosed method and circuit uses a variable length instruction set. A portion of the variable length instructions may be stored in adjacent locations within memory. The beginning and ending of instructions may occur across memory word boundaries. Instructions may contain variable numbers of instruction fragments that cause a particular operation to be performed. The disclosed circuit has a set of three data buses over which data may be exchanged with a register bank and three data memories. Data buses include one wide bus and two narrow buses. The wide bus is coupled to a wide data memory and the two narrow buses are coupled to two narrow data memories. Additionally, the disclosed circuit has a register bank that is accessible by at least two processing units. The disclosed circuit further includes an instruction fetch unit that receives instructions of variable length stored in an instruction memory. An instruction memory is separate from the set of three data memories.
    • 一种用于数字信号处理的方法和电路。 所公开的方法和电路使用可变长度指令集。 可变长度指令的一部分可以存储在存储器内的相邻位置。 指令的开始和结束可能跨越存储器字边界发生。 指令可能包含导致执行特定操作的可变数目的指令片段。 所公开的电路具有一组三个数据总线,数据可以通过该数据总线与寄存器组和三个数据存储器交换。 数据总线包括一条宽公共汽车和两条窄车。 宽总线耦合到宽数据存储器,并且两个窄总线耦合到两个窄数据存储器。 此外,所公开的电路具有可由至少两个处理单元访问的寄存器组。 所公开的电路还包括指令提取单元,其接收存储在指令存储器中的可变长度的指令。 指令存储器与三组数据存储器分开。