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1. 发明授权

US07447725B2 Apparatus for controlling rounding modes in single instruction multiple data (SIMD) floating-point units 失效
标题翻译：用于在单指令多数据（SIMD）浮点单元中控制舍入模式的装置
公开(公告)号：US07447725B2
公开(公告)日：2008-11-04
申请号：US10982110
申请日：2004-11-05
申请人： Sang Hoo Dhong , Harm Peter Hofstee , Christian Jacobi , Silvia Melitta Mueller , Hwa-Joon Oh
发明人： Sang Hoo Dhong , Harm Peter Hofstee , Christian Jacobi , Silvia Melitta Mueller , Hwa-Joon Oh
IPC分类号： G06F7/38
CPC分类号： G06F7/49947 , G06F7/483 , G06F7/49968 , G06F7/49973 , G06F7/49989 , G06F2207/3828
摘要： An apparatus for controlling rounding modes in a single instruction multiple data (SIMD) floating-point unit is disclosed. The SIMD floating-point unit includes a floating-point status-and-control register (FPSCR) having a first rounding mode bit field and a second rounding mode bit field. The SIMD floating-point unit also includes means for generating a first slice and a second slice. During a floating-point operation, the SIMD floating-point unit concurrently performs a first rounding operation on the first slice and a second rounding operation on the second slice according to a bit in the first rounding mode bit field and a bit in the second rounding mode bit field within the FPSCR, respectively.
摘要翻译：公开了一种用于在单指令多数据（SIMD）浮点单元中控制舍入模式的装置。 SIMD浮点单元包括具有第一舍入模式位字段和第二舍入模式位字段的浮点状态和控制寄存器（FPSCR）。 SIMD浮点单元还包括用于生成第一切片和第二切片的装置。在浮点运算期间，SIMD浮点单元根据第一舍入模式位字段中的位并且在第二舍入中的位同时对第一切片进行第一舍入运算，并对第二切片进行第二舍入运算 FPSCR中的模式位字段。

2. 发明申请

US20090024684A1 Method for Controlling Rounding Modes in Single Instruction Multiple Data (SIMD) Floating-Point Units 有权
标题翻译：用于控制单指令多数据（SIMD）浮点单元中舍入模式的方法
公开(公告)号：US20090024684A1
公开(公告)日：2009-01-22
申请号：US12238500
申请日：2008-09-26
申请人： Sang Hoo Dhong , Harm Peter Hofstee , Christian Jacobi , Silvia Melitta Mueller , Hwa-Joon Oh
发明人： Sang Hoo Dhong , Harm Peter Hofstee , Christian Jacobi , Silvia Melitta Mueller , Hwa-Joon Oh
IPC分类号： G06F7/483
CPC分类号： G06F7/49947 , G06F7/483 , G06F7/49968 , G06F7/49973 , G06F7/49989 , G06F2207/3828
摘要： A method for controlling rounding modes in a single instruction multiple data (SIMD) floating-point unit is disclosed. The SIMD floating-point unit includes a floating-point status-and-control register (FPSCR) having a first rounding mode bit field and a second rounding mode bit field. The SIMD floating-point unit also includes means for generating a first slice and a second slice. During a floating-point operation, the SIMD floating-point unit concurrently performs a first rounding operation on the first slice and a second rounding operation on the second slice according to a bit in the first rounding mode bit field and a bit in the second rounding mode bit field within the FPSCR, respectively.
摘要翻译：公开了一种用于在单指令多数据（SIMD）浮点单元中控制舍入模式的方法。 SIMD浮点单元包括具有第一舍入模式位字段和第二舍入模式位字段的浮点状态和控制寄存器（FPSCR）。 SIMD浮点单元还包括用于生成第一切片和第二切片的装置。在浮点运算期间，SIMD浮点单元根据第一舍入模式位字段中的位并且在第二舍入中的位同时对第一切片进行第一舍入运算，并对第二切片进行第二舍入运算 FPSCR中的模式位字段。

3. 发明授权

US08229989B2 Method for controlling rounding modes in single instruction multiple data (SIMD) floating-point units 有权
标题翻译：用于控制单指令多数据（SIMD）浮点单元中舍入模式的方法
公开(公告)号：US08229989B2
公开(公告)日：2012-07-24
申请号：US12238500
申请日：2008-09-26
申请人： Sang Hoo Dhong , Harm Peter Hofstee , Christian Jacobi , Silvia Melitta Mueller , Hwa-Joon Oh
发明人： Sang Hoo Dhong , Harm Peter Hofstee , Christian Jacobi , Silvia Melitta Mueller , Hwa-Joon Oh
IPC分类号： G06F7/38
CPC分类号： G06F7/49947 , G06F7/483 , G06F7/49968 , G06F7/49973 , G06F7/49989 , G06F2207/3828
摘要： A method for controlling rounding modes in a single instruction multiple data (SIMD) floating-point unit is disclosed. The SIMD floating-point unit includes a floating-point status-and-control register (FPSCR) having a first rounding mode bit field and a second rounding mode bit field. The SIMD floating-point unit also includes means for generating a first slice and a second slice. During a floating-point operation, the SIMD floating-point unit concurrently performs a first rounding operation on the first slice and a second rounding operation on the second slice according to a bit in the first rounding mode bit field and a bit in the second rounding mode bit field within the FPSCR, respectively.
摘要翻译：公开了一种用于在单指令多数据（SIMD）浮点单元中控制舍入模式的方法。 SIMD浮点单元包括具有第一舍入模式位字段和第二舍入模式位字段的浮点状态和控制寄存器（FPSCR）。 SIMD浮点单元还包括用于生成第一切片和第二切片的装置。在浮点运算期间，SIMD浮点单元根据第一舍入模式位字段中的位并且在第二舍入中的位同时对第一切片进行第一舍入运算，并对第二切片进行第二舍入运算 FPSCR中的模式位字段。

4. 发明授权

US07406589B2 Processor having efficient function estimate instructions 失效
标题翻译：处理器具有有效的功能估计指令
公开(公告)号：US07406589B2
公开(公告)日：2008-07-29
申请号：US11127848
申请日：2005-05-12
申请人： Sang Hoo Dhong , Gordon Clyde Fossum , Harm Peter Hofstee , Brad William Michael , Silvia Melitta Mueller , Hwa-Joon Oh
发明人： Sang Hoo Dhong , Gordon Clyde Fossum , Harm Peter Hofstee , Brad William Michael , Silvia Melitta Mueller , Hwa-Joon Oh
IPC分类号： G06F7/552 , G06F7/544 , G06F7/38
CPC分类号： G06F7/483 , G06F7/535 , G06F7/5443 , G06F7/5525 , G06F9/30014 , G06F2207/5356
摘要： High-precision floating-point function estimates are split in two instructions each: a low precision table lookup instruction and a linear interpolation instruction. Estimates of different functions can be implemented using this scheme: A separate table-lookup instruction is provided for each different function, while only a single interpolation instruction is needed, since the single interpolation instruction can perform the interpolation step for any of the functions to be estimated. Thus, significantly less overhead is incurred than would be incurred with specialized hardware, while still maintaining a uniform FPU latency, which allows for much simpler control logic.
摘要翻译：高精度浮点函数估计分为两个指令：低精度表查找指令和线性插值指令。可以使用该方案来实现不同功能的估计：为每个不同的功能提供单独的表查找指令，而仅需要单个插补指令，因为单个内插指令可以执行任何功能的内插步骤估计。因此，与专用硬件相比，产生的开销大大降低，同时仍保持统一的FPU延迟，这允许更简单的控制逻辑。

5. 发明申请

US20080263336A1 Processor Having Efficient Function Estimate Instructions 审中-公开
标题翻译：具有高效功能估计指令的处理器
公开(公告)号：US20080263336A1
公开(公告)日：2008-10-23
申请号：US12145482
申请日：2008-06-24
申请人： Sang Hoo Dhong , Gordon Clyde Fossum , Harm Peter Hofstee , Brad William Michael , Silvia Melitta Mueller , Hwa-Joon Oh
发明人： Sang Hoo Dhong , Gordon Clyde Fossum , Harm Peter Hofstee , Brad William Michael , Silvia Melitta Mueller , Hwa-Joon Oh
IPC分类号： G06F9/302
CPC分类号： G06F7/483 , G06F7/535 , G06F7/5443 , G06F7/5525 , G06F9/30014 , G06F2207/5356
摘要： High-precision floating-point function estimates are split in two instructions each: a low precision table lookup instruction and a linear interpolation instruction. Estimates of different functions can be implemented using this scheme: A separate table-lookup instruction is provided for each different function, while only a single interpolation instruction is needed, since the single interpolation instruction can perform the interpolation step for any of the functions to be estimated. Thus, significantly less overhead is incurred than would be incurred with specialized hardware, while still maintaining a uniform FPU latency, which allows for much simpler control logic.
摘要翻译：高精度浮点函数估计分为两个指令：低精度表查找指令和线性插值指令。可以使用该方案来实现不同功能的估计：为每个不同的功能提供单独的表查找指令，而仅需要单个插补指令，因为单个内插指令可以执行任何功能的内插步骤估计。因此，与专用硬件相比，产生的开销大大降低，同时仍保持统一的FPU延迟，这允许更简单的控制逻辑。

6. 发明授权

US07493357B2 Random carry-in for floating-point operations 有权
标题翻译：随机进位浮点运算
公开(公告)号：US07493357B2
公开(公告)日：2009-02-17
申请号：US10971851
申请日：2004-10-22
申请人： Sang Hoo Dhong , Harm Peter Hofstee , Kevin Nowka , Steven Douglas Posluszny , Joel Abraham Silberman
发明人： Sang Hoo Dhong , Harm Peter Hofstee , Kevin Nowka , Steven Douglas Posluszny , Joel Abraham Silberman
IPC分类号： G06F7/44 , G06F7/38
CPC分类号： G06F7/485 , G06F7/49947
摘要： A method and apparatus for adding and multiplying floating-point operands such that a fixed-size mantissa result is produced. In accordance with the present addition method, the mantissa of a first floating-point operand is shifted in accordance with relative operand exponent information. Next, the first operand mantissa is added to the second operand mantissa. The addition step includes replacing a least significant non-overlapped portion of the first operand mantissa with a randomly-generated carry-in bit. In accordance with the multiplication method, a partial product array is generated from a pair of floating-point operand mantissas. Next, prior to compressing the partial product array into a compressed mantissa result, a lower-order bit portion of the partial product array is replaced with a randomly generated carry-in value.
摘要翻译：一种用于对浮点操作数进行相加和相乘以产生固定大小的尾数结果的方法和装置。根据本加法，第一浮点数操作数的尾数根据相对操作数指数信息移位。接下来，将第一操作数尾数添加到第二操作数尾数。所述添加步骤包括用随机生成的进位位替换第一操作数尾数的最不重要的非重叠部分。根据乘法方法，从一对浮点运算符尾数生成部分乘积数组。接下来，在将部分乘积阵列压缩为压缩尾数结果之前，将部分乘积阵列的低阶位部分替换为随机生成的进位值。

7. 发明授权

US06941335B2 Random carry-in for floating-point operations 失效
公开(公告)号：US06941335B2
公开(公告)日：2005-09-06
申请号：US09999135
申请日：2001-11-29
申请人： Sang Hoo Dhong , Harm Peter Hofstee , Kevin Nowka , Steven Douglas Posluszny , Joel Abraham Silberman
发明人： Sang Hoo Dhong , Harm Peter Hofstee , Kevin Nowka , Steven Douglas Posluszny , Joel Abraham Silberman
IPC分类号： G06F7/38 , G06F7/42 , G06F7/485 , G06F7/499 , G06F17/10
CPC分类号： G06F7/485 , G06F7/49947
摘要： A method and apparatus for adding and multiplying floating-point operands such that a fixed-size mantissa result is produced. In accordance with the present addition method, the mantissa of a first floating-point operand is shifted in accordance with relative operand exponent information. Next, the first operand mantissa is added to the second operand mantissa. The addition step includes replacing a least significant non-overlapped portion of the first operand mantissa with a randomly-generated carry-in bit. In accordance with the multiplication method, a partial product array is generated from a pair of floating-point operand mantissas. Next, prior to compressing the partial product array into a compressed mantissa result, a lower-order bit portion of the partial product array is replaced with a randomly generated carry-in value.

8. 发明授权

US06760819B2 Symmetric multiprocessor coherence mechanism 有权
标题翻译：对称多处理器一致性机制
公开(公告)号：US06760819B2
公开(公告)日：2004-07-06
申请号：US09895888
申请日：2001-06-29
申请人： Sang Hoo Dhong , Harm Peter Hofstee , Charles Ray Johns , John Samuel Liberty , Thuong Quang Truong
发明人： Sang Hoo Dhong , Harm Peter Hofstee , Charles Ray Johns , John Samuel Liberty , Thuong Quang Truong
IPC分类号： G06F1208
CPC分类号： G06F12/0822 , G06F12/0811 , G06F12/084
摘要： A processor-cache operational scheme and topology within a multi-processor data processing system having a shared lower level cache (or memory) by which the number of coherency busses is reduced and more efficient snoop resolution and coherency operations with the processor caches are provided. A copy of the internal (L1) cache directory is provided within the lower level (L2) cache or memory. The snoop operations and coherency maintenance operations of the L1 directory are completed by comparing the snoop addresses with the address tags of the copy of the L1 directory in the L2 cache. Updates to the coherency states of the copy of the L1 directory are mirrored in the L1 directory and L1 cache. This eliminates the need for the individual coherency buses of each processor that is coupled to the L2 cache and speeds up coherency operations because the snoops do not have to be transmitted to the L1 caches.
摘要翻译：提供具有共享低级高速缓存（或存储器）的多处理器数据处理系统中的处理器 - 高速缓存操作方案和拓扑，通过该共享低级高速缓存（或存储器）减少一致性总线的数量并且提供与处理器高速缓存更有效的窥探分辨率和一致性操作。在低级（L2）高速缓存或内存中提供内部（L1）缓存目录的副本。通过将侦听地址与L2缓存中L1目录的副本的地址标签进行比较，完成L1目录的侦听操作和一致性维护操作。对L1目录的副本的一致性状态的更新被镜像在L1目录和L1缓存中。这消除了对耦合到L2高速缓存的每个处理器的各个一致性总线的需要，并且加速一致性操作，因为该探测不必被传送到L1高速缓存。

9. 发明授权

US08136061B2 Method of logic circuit synthesis and design using a dynamic circuit library 有权
标题翻译：使用动态电路库的逻辑电路合成与设计方法
公开(公告)号：US08136061B2
公开(公告)日：2012-03-13
申请号：US12060768
申请日：2008-04-01
申请人： Sang Hoo Dhong , Harm Peter Hofstee , Stephen Douglas Posluszny , Joel Abraham Silberman , Osamu Takahashi , Dieter F. Wendel
发明人： Sang Hoo Dhong , Harm Peter Hofstee , Stephen Douglas Posluszny , Joel Abraham Silberman , Osamu Takahashi , Dieter F. Wendel
IPC分类号： G06F17/50
CPC分类号： G06F17/505
摘要： The circuit library available for logic synthesis is limited to a single dynamic circuit block or logic synthesis block. The circuit design method includes first defining the logic synthesis block and then performing logic synthesis for a predetermined logical operation to be implemented. The logic synthesis step constrained to the single logic synthesis block produces an intermediate circuit design which necessarily comprises a series of dynamic circuit blocks, each associated with a single reset signal. Once the intermediate circuit is produced, the circuit design method includes eliminating unnecessary devices from the intermediate circuit to produce a final logic circuit, and then sizing the devices in the final circuit to complete the design.
摘要翻译：可用于逻辑合成的电路库限于单个动态电路块或逻辑合成块。电路设计方法包括首先定义逻辑合成块，然后执行用于要实现的预定逻辑运算的逻辑合成。限制到单个逻辑合成块的逻辑合成步骤产生中间电路设计，其必然包括一系列动态电路块，每个动态电路块与单个复位信号相关联。一旦生成了中间电路，电路设计方法包括从中间电路中消除不必要的设备，产生最终的逻辑电路，然后对最终电路中的器件进行尺寸调整以完成设计。

10. 发明授权

US06983387B2 Microprocessor chip simultaneous switching current reduction method and apparatus 有权
标题翻译：微处理器芯片同时开关电流降低方法和装置
公开(公告)号：US06983387B2
公开(公告)日：2006-01-03
申请号：US10273617
申请日：2002-10-17
申请人： David William Boerstler , Sang Hoo Dhong , Harm Peter Hofstee , Peichun Peter Liu
发明人： David William Boerstler , Sang Hoo Dhong , Harm Peter Hofstee , Peichun Peter Liu
IPC分类号： H03L7/06
CPC分类号： G06F1/06 , G06F1/10
摘要： Disclosed is an electronic chip containing a plurality of electronic circuit partitions, distributed over the area of the chip, each including a processor core and a clock phase domain different from cores in other partitions of the chip. A source of same frequency, but different phase clock signals representing different clock domains, provides different phase signals to adjacent partitions for the purpose of reducing instantaneous magnitude switching currents. Intra-chip communication circuitry distributes control and data signals between partitions.
摘要翻译：公开了一种电子芯片，其包含分布在芯片的区域上的多个电子电路分区，每个电子部件分别包括处理器核心和与芯片的其他分区中的核心不同的时钟相位域。相同频率的源，但是表示不同时钟域的不同相位时钟信号，为了减小瞬时幅度切换电流，向相邻分区提供不同的相位信号。片内通信电路在分区之间分配控制和数据信号。

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