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    • 4. 发明申请
    • Processor instruction for DMT encoding
    • DMT编码的处理器指令
    • US20050094551A1
    • 2005-05-05
    • US10949466
    • 2004-09-27
    • Mark TauntonTimothy Martin Dobson
    • Mark TauntonTimothy Martin Dobson
    • H04J11/00
    • H04L27/2608
    • A method, apparatus and processing instruction for performing DMT encoding substantially simultaneously on one tone or multiple tones comprises the steps of: (a) using a first input operand comprising one or more bit-group data values, each to be encoded for one or more tones; (b) using a second input operand comprising one or more bit-group size values corresponding to the bit-group data values in the first input operand; and (c) generating an output comprising a result of encoding the bit-group data value or values from the first input operand by mapping each of the bit-group data values from the first input operand onto a location in a constellation as determined by the corresponding bit-group size value or values from the second input operand. One embodiment for performing DMT encoding substantially simultaneously on first through fourth tones using a SIMD instruction includes at least the following steps: 1) using a first input operand that includes a 64-bit value having first through fourth half-word fields, each of the first through fourth half-word fields includes a bit-group data value to be DMT encoded for one of the first through fourth tones; 2) using a second input operand that includes a 64-bit value having first through fourth half-word fields, the first through fourth half-word fields define bit-group size values of the first through fourth half-word fields in the first input operand; 3) generating an output including a 128-bit value having first and second 64-bit values each having first and second 32-bit fields, each of the 32-bit fields representing a result of DMT encoding a corresponding bit-group data field from the first input by mapping the first input operand onto a predetermined constellation as determined by the bit-group size values from the second input operand.
    • 一种用于在一个音调或多个音调基本上同时执行DMT编码的方法,装置和处理指令包括以下步骤:(a)使用包括一个或多个比特组数据值的第一输入操作数,每个要编码一个或多个 音调 (b)使用包括与所述第一输入操作数中的位组数据值对应的一个或多个位组大小值的第二输入操作数; 以及(c)通过将来自第一输入操作数的位组数据值中的每一个映射到星座中的位置来产生包括对来自第一输入操作数的位组数据值或值进行编码的结果的输出, 相应的位组大小值或来自第二个输入操作数的值。 使用SIMD指令基本上同时在第一到第四音调上执行DMT编码的一个实施例至少包括以下步骤:1)使用包括具有第一到第四半字字段的64位值的第一输入操作数, 第一至第四半字字段包括为第一至第四音调之一编码的DMT的位组数据值; 2)使用包括具有第一至第四半字字段的64位值的第二输入操作数,第一至第四半字字段限定第一输入中第一至第四半字字段的位组大小值 操作数 3)产生包括具有第一和第二64位值的128位值的输出,每个具有第一和第二32位字段,每个32位字段表示对相应位组数据字段进行DMT编码的结果, 通过将第一输入操作数映射到由来自第二输入操作数的位组大小值确定的预定星座图上的第一输入。
    • 6. 发明授权
    • System and method for generating header error control byte for Asynchronous Transfer Mode cell
    • 用于产生异步传输模式单元的报头错误控制字节的系统和方法
    • US07580412B2
    • 2009-08-25
    • US10946304
    • 2004-09-22
    • Mark TauntonTimothy Martin Dobson
    • Mark TauntonTimothy Martin Dobson
    • H04L12/56
    • H04L12/5601H04L2012/5652H04L2012/5665H04L2012/5673H04L2012/6478
    • In an Asynchronous Transfer Mode cell, a method and apparatus are disclosed for producing a cell header having bytes with bits in reverse order. Address and control data bytes are received, and a value for a reverse bit Header Error Control byte is generated from the address and control data bytes. Additionally, the order of bits within each address and control data byte is reversed. The produced cell header comprises the reverse bit Header Error Control byte and the address and control data bytes with each address and control data byte having its bits in reversed order. In one embodiment, the present invention provides a processor instruction for producing the cell header having bytes with bits in reverse order. The instruction receives as input address and control data bytes. The instruction then computes a Header Error Control byte and formats the Header Error Control byte in reverse bit order for subsequent processing within the modem. Additionally, the instruction also reverses the bit-order of each byte of the cell header's address and control fields for subsequent processing within the modem.
    • 在异步传输模式小区中,公开了一种用于产生具有相反顺序的位的字节的信元报头的方法和装置。 接收地址和控制数据字节,并从地址和控制数据字节产生反向位头标错误控制字节的值。 此外,每个地址和控制数据字节内的位顺序相反。 所产生的单元标题包括反向位头标错误控制字节和地址和控制数据字节,其中每个地址和控制数据字节具有相反的顺序。 在一个实施例中,本发明提供一种处理器指令,用于产生具有相反顺序的位的字节的信元报头。 该指令作为输入地址和控制数据字节接收。 然后,该指令计算报头错误控制字节,并以反向位顺序格式化报头错误控制字节,以便调制解调器中的后续处理。 此外,该指令还反转了单元头的地址和控制字段的每个字节的位顺序,以便调制解调器中的后续处理。
    • 8. 发明授权
    • Register addressing
    • 注册寻址
    • US07266671B2
    • 2007-09-04
    • US11003398
    • 2004-12-06
    • Mark TauntonSophie WilsonTimothy Martin Dobson
    • Mark TauntonSophie WilsonTimothy Martin Dobson
    • G06F12/00
    • G06F9/30112G06F9/30036G06F9/30163
    • There is disclosed a technique for accessing a register file which comprises defining a first register address as a plurality of bits and using said first register address to access said register file generating a second register address by using a sequence of said plurality of bits with at least one of said plurality of bits supplied via a unitary operator, the unitary operator being effective to selectively alter the logical value of said bit depending on its logical value in the first register address, and using said second register address to access said register file. A computer system for carrying out such a technique is also enclosed.
    • 公开了一种用于访问寄存器文件的技术,其包括将第一寄存器地址定义为多个位,并且使用所述第一寄存器地址访问所述寄存器文件,以通过至少使用所述多个位的序列来生成第二寄存器地址 所述多个位中的一个通过单一运算符提供,所述单一运算符有效地根据其在第一寄存器地址中的逻辑值选择性地改变所述位的逻辑值,并且使用所述第二寄存器地址来访问所述寄存器堆。 还包括用于执行这种技术的计算机系统。