Low-power clock gating circuit
    1.
    发明授权
    Low-power clock gating circuit 有权
    低功耗时钟门控电路

    公开(公告)号:US07576582B2

    公开(公告)日:2009-08-18

    申请号:US11945387

    申请日:2007-11-27

    IPC分类号: H03K3/289

    CPC分类号: H03K3/0375

    摘要: Provided is a low-power clock gating circuit using a Multi-Threshold CMOS (MTCMOS) technique. The low-power clock gating circuit includes a latch circuit of an input stage and an AND gate circuit of an output stage, in which power consumption caused by leakage current in the clock gating circuit is reduced in a sleep mode, and supply of a clock to a unused device of a targeted logic circuit is prevented by the control of a clock enable signal in an active mode, thereby reducing power consumption. The low-power clock gating circuit using an MTCMOS technique uses devices having a low threshold voltage and devices having a high threshold voltage, which makes it possible to implement a high-speed, low-power circuit, unlike a conventional clock gating circuit using a single threshold voltage.

    摘要翻译: 提供了使用多阈值CMOS(MTCMOS)技术的低功率时钟选通电路。 低功率时钟选通电路包括输入级的锁存电路和输出级的与门电路,其中由休眠模式中的时钟门控电路中的漏电流引起的功耗降低,并且提供时钟 通过控制活动模式中的时钟使能信号来防止目标逻辑电路的未使用的装置,从而降低功耗。 使用MTCMOS技术的低功率时钟选通电路使用具有低阈值电压的器件和具有高阈值电压的器件,这使得可以实现高速,低功率电路,这与使用 单阈值电压。

    SIMD parallel processor with SIMD/SISD/row/column operation modes
    3.
    发明申请
    SIMD parallel processor with SIMD/SISD/row/column operation modes 审中-公开
    SIMD并行处理器采用SIMD / SISD /行/列操作模式

    公开(公告)号:US20080133879A1

    公开(公告)日:2008-06-05

    申请号:US11906381

    申请日:2007-10-01

    IPC分类号: G06F9/30

    摘要: Provided is a single instruction multiple data (SIMD) parallel processor including a plurality of processing units connected to one another. Each processing unit includes: an instruction register; an instruction decoder; a register files selection circuit; and register files. The SIMD parallel processor can selectively control data of register files required for any one of SIMD, single instruction single data (SISD), row, and column operations in response to an instruction. Since each of the SIMD, SISD, row, and column operations can be effectively performed according to the type of application, the SIMD parallel processor has excellent utility, efficiency, and flexibility.

    摘要翻译: 提供了包括彼此连接的多个处理单元的单指令多数据(SIMD)并行处理器。 每个处理单元包括:指令寄存器; 指令解码器; 寄存器文件选择电路; 并注册文件。 SIMD并行处理器可以选择性地控制响应于指令的SIMD,单指令单数据(SISD),行和列操作中的任何一个所需的寄存器文件的数据。 由于可以根据应用类型有效地执行SIMD,SISD,行和列操作,所以SIMD并行处理器具有优异的效用,效率和灵活性。

    METHOD OF PERFORMING 3D GRAPHICS GEOMETRIC TRANSFORMATION USING PARALLEL PROCESSOR
    4.
    发明申请
    METHOD OF PERFORMING 3D GRAPHICS GEOMETRIC TRANSFORMATION USING PARALLEL PROCESSOR 审中-公开
    使用并行处理器执行3D图形几何变换的方法

    公开(公告)号:US20080291198A1

    公开(公告)日:2008-11-27

    申请号:US12100707

    申请日:2008-04-10

    IPC分类号: G06T15/00

    CPC分类号: G06T15/005 G06T2210/52

    摘要: Provided is a method of performing three-dimensional (3D) graphics geometric transformation using a parallel processor having a plurality of Processing Elements (PEs). The method includes performing model/view transformation and projection transformation on a first group of vertex vectors using the parallel processor; calculating a value used for quaternion correction of the first group of vertex vectors using a general-use processor, and simultaneously performing model/view transformation and projection transformation on a second group of vertex vectors; performing quaternion correction and screen mapping on the first group of vertex vectors, and simultaneously calculating a value used for quaternion correction of the second group of vertex vectors using the general-use processor; and performing quaternion correction and screen mapping on the second group of vertex vectors.

    摘要翻译: 提供了一种使用具有多个处理元件(PE)的并行处理器执行三维(3D)图形几何变换的方法。 该方法包括使用并行处理器对第一组顶点向量执行模型/视图变换和投影变换; 使用通用处理器计算用于第一组顶点矢量的四元数校正的值,并且同时对第二组顶点矢量执行模型/视图变换和投影变换; 对所述第一组顶点向量进行四元数校正和画面映射,并且使用所述通用处理器同时计算用于所述第二组顶点向量的四元数校正的值; 并对第二组顶点向量执行四元数校正和屏幕映射。

    Reconfigurable arithmetic unit and high-efficiency processor having the same
    5.
    发明授权
    Reconfigurable arithmetic unit and high-efficiency processor having the same 有权
    可重构算术单元和具有相同功能的高效处理器

    公开(公告)号:US08150903B2

    公开(公告)日:2012-04-03

    申请号:US12136107

    申请日:2008-06-10

    IPC分类号: G06F7/57

    摘要: Provided are a reconfigurable arithmetic unit and a processor having the same. The reconfigurable arithmetic unit can perform an addition operation or a multiplication operation according to an instruction by sharing an adder. The reconfigurable arithmetic unit includes a booth encoder for encoding a multiplier, a partial product generator for generating a plurality of partial products using the encoded multiplier and a multiplicand, a Wallace tree circuit for compressing the partial products into a first partial product and a second partial product, a first Multiplexer (MUX) for selecting and outputting one of the first partial product and a first addition input according to a selection signal, a second MUX for selecting and outputting one of the second partial product and a second addition input according to the selection signal, and a Carry Propagation Adder (CPA) for adding an output of the first MUX and an output of the second MUX to output an operation result. The arithmetic unit can operate as an adder or a multiplier according to an instruction, and thus can increase the degree of use of entire hardware.

    摘要翻译: 提供了一种可重构运算单元和具有该可重配置运算单元的处理器。 可重构算术单元可以通过共享加法器来执行根据指令的相加操作或乘法运算。 可重构算术单元包括用于编码乘数的展位编码器,用于使用编码乘数产生多个部分乘积的部分乘积生成器和被乘数,用于将部分乘积压缩为第一部分乘积的华莱士树电路和第二部分乘积 产品,用于根据选择信号选择和输出第一部分积和第一加法输入之一的第一多路复用器(MUX),用于根据选择信号选择和输出第二部分乘积和第二加法输入之一的第二MUX 选择信号和用于添加第一MUX的输出和第二MUX的输出的进位传播加法器(CPA),以输出运算结果。 算术单元可以根据指令作为加法器或乘法器进行操作,从而可以增加整个硬件的使用程度。

    Row of floating point accumulators coupled to respective PEs in uppermost row of PE array for performing addition operation
    6.
    发明授权
    Row of floating point accumulators coupled to respective PEs in uppermost row of PE array for performing addition operation 有权
    耦合到PE阵列的最上排中的相应PE的浮点累加器的行,用于执行附加操作

    公开(公告)号:US07769981B2

    公开(公告)日:2010-08-03

    申请号:US12045844

    申请日:2008-03-11

    IPC分类号: G06F15/80

    CPC分类号: G06F15/8007

    摘要: Provided is a parallel processor for supporting a floating-point operation. The parallel processor has a flexible structure for easy development of a parallel algorithm involving multimedia computing, requires low hardware cost, and consumes low power. To support floating-point operations, the parallel processor uses floating-point accumulators and a flag for floating-point multiplication. Using the parallel processor, it is possible to process a geometric transformation operation in a 3-dimensional (3D) graphics process at low cost. Also, the cost of a bus width for instructions can be minimized by a partitioned Single-Instruction Multiple-Data (SIMD) method and a method of conditionally executing instructions.

    摘要翻译: 提供了一种用于支持浮点运算的并行处理器。 并行处理器具有灵活的结构,便于开发涉及多媒体计算的并行算法,需要较低的硬件成本,并且消耗低功耗。 为了支持浮点运算,并行处理器使用浮点累加器和浮点乘法的标志。 使用并行处理器,可以以低成本在三维(3D)图形处理中处理几何变换操作。 此外,可以通过分区单指令多数据(SIMD)方法和有条件执行指令的方法来最小化用于指令的总线宽度的成本。

    DMA CONTROLLER WITH INTERRUPT CONTROL PROCESSOR
    7.
    发明申请
    DMA CONTROLLER WITH INTERRUPT CONTROL PROCESSOR 审中-公开
    具有中断控制处理器的DMA控制器

    公开(公告)号:US20110022767A1

    公开(公告)日:2011-01-27

    申请号:US12843801

    申请日:2010-07-26

    IPC分类号: G06F13/28 G06F13/24

    CPC分类号: G06F13/32

    摘要: Provided is a direct memory access (DMA) controller having an interrupt control processor that can process DMA transmission-related interrupts according to a control program modifiable by a user. The DMA controller includes the interrupt control processor that can process a DMA transmission-related interrupt and a DMA request interrupt transmitted from peripheral devices and control the DMA channel through the control program that can be modified by the user, so that DMA channel control and relevant interrupt processing loads caused by a plurality of DMA data transmissions are reduced, and the flexibility of DMA channel control and interrupt processing in control of the DMA controller is provided to the user.

    摘要翻译: 提供了具有中断控制处理器的直接存储器访问(DMA)控制器,其可以根据用户可修改的控制程序来处理与DMA传输相关的中断。 DMA控制器包括可处理DMA传输相关中断的中断控制处理器和从外围设备发送的DMA请求中断,并通过可由用户修改的控制程序控制DMA通道,从而使DMA通道控制和相关 减少由多个DMA数据传输引起的中断处理负载,并且向用户提供DMA控制的DMA通道控制和中断处理的灵活性。

    MEMORY SYSTEM AND INTEGRATED MANAGEMENT METHOD FOR PLURALITY OF DMA CHANNELS
    8.
    发明申请
    MEMORY SYSTEM AND INTEGRATED MANAGEMENT METHOD FOR PLURALITY OF DMA CHANNELS 有权
    用于DMA通道多重的存储系统和集成管理方法

    公开(公告)号:US20110153878A1

    公开(公告)日:2011-06-23

    申请号:US12882141

    申请日:2010-09-14

    IPC分类号: G06F13/28

    CPC分类号: G06F13/28

    摘要: Provided are a memory system and an integrated management method for a plurality of direct memory access (DMA) channels. The memory system includes a memory controller exchanging data with a memory and having a plurality of channels physically separated from each other, and a DMA controller having a plurality of DMA channels physically separated from each other and in contact with the plurality of channels of the memory controller, and exchanging data with the memory via the plurality of DMA channels and the memory controller.

    摘要翻译: 提供了用于多个直接存储器访问(DMA)通道的存储器系统和集成管理方法。 存储器系统包括存储器控制器,其与存储器交换数据并且具有物理上彼此分离的多个通道;以及DMA控制器,其具有彼此物理上彼此分离并与存储器的多个通道接触的多个DMA通道 控制器,并且经由多个DMA通道和存储器控制器与存储器交换数据。

    Apparatus for calculating absolute difference
    9.
    发明授权
    Apparatus for calculating absolute difference 有权
    用于计算绝对差的装置

    公开(公告)号:US08407276B2

    公开(公告)日:2013-03-26

    申请号:US12843550

    申请日:2010-07-26

    IPC分类号: G06F7/50

    CPC分类号: G06F7/544

    摘要: Provided is an apparatus for calculating an absolute difference capable of efficiently performing an absolute difference using an adder. The apparatus for calculating an absolute difference includes a comparator comparing values of two integers, first and second selectors each selecting and outputting one of the two integers according to the comparison results of the comparator, an inverter complementing the result value selected by the second selector; and an adder adding up the result value selected by the first selector, the value complemented by the inverter, and 1.

    摘要翻译: 提供了一种用于计算能够使用加法器有效地执行绝对差的绝对差的装置。 用于计算绝对差的装置包括比较器,比较器比较两个整数的值,第一和第二选择器,每个选择器根据比较器的比较结果选择和输出两个整数中的一个;逆变器,补偿由第二选择器选择的结果值; 和加法器将由第一选择器选择的结果值相加,由逆变器补充的值,以及1。

    MEMORY SYSTEM AND INTEGRATED MANAGEMENT METHOD FOR PLURALITY OF DMA CHANNELS
    10.
    发明申请
    MEMORY SYSTEM AND INTEGRATED MANAGEMENT METHOD FOR PLURALITY OF DMA CHANNELS 审中-公开
    用于DMA通道多重的存储系统和集成管理方法

    公开(公告)号:US20120226831A1

    公开(公告)日:2012-09-06

    申请号:US13471236

    申请日:2012-05-14

    IPC分类号: G06F13/28

    CPC分类号: G06F13/28

    摘要: Provided are a memory system and an integrated management method for a plurality of direct memory access (DMA) channels. The memory system includes a memory controller exchanging data with a memory and having a plurality of channels physically separated from each other, and a DMA controller having a plurality of DMA channels physically separated from each other and in contact with the plurality of channels of the memory controller, and exchanging data with the memory via the plurality of DMA channels and the memory controller.

    摘要翻译: 提供了用于多个直接存储器访问(DMA)通道的存储器系统和集成管理方法。 存储器系统包括存储器控制器,其与存储器交换数据并且具有物理上彼此分离的多个通道;以及DMA控制器,其具有彼此物理上彼此分离并与存储器的多个通道接触的多个DMA通道 控制器,并且经由多个DMA通道和存储器控制器与存储器交换数据。