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10 条记录 (耗时 0.024 秒)

    Apparatus and method for reducing precision of data
    1.
    发明授权
    Apparatus and method for reducing precision of data 失效
    降低数据精度的装置和方法

    公开(公告)号：US07577699B2

    公开(公告)日：2009-08-18

    申请号：US11091639

    申请日：2005-03-28

    申请人： Tracy C. Denk ,  Jeffrey S. Putnam

    发明人： Tracy C. Denk ,  Jeffrey S. Putnam

    IPC分类号： G06F7/38

    CPC分类号： G06F7/49942 ,  G06F7/48 ,  G06F7/49963

    摘要： Methods and apparatus for reducing precision of an input signal, by comparing a portion of the input signal to a preselected threshold value, and determining a selectable bias responsive to the comparison. By combining a portion of the input signal with the selectable bias, a reduced precision signal, having minimized or eliminated rounding error, is generated. The selectable bias corresponds to a predetermined characteristic of one of bias, an error signal, the input datum, the reduced precision datum, and a combination thereof.

    摘要翻译： 通过将输入信号的一部分与预选阈值进行比较来降低输入信号的精度，以及响应于比较来确定可选择的偏置的方法和装置。 通过将输入信号的一部分与可选择的偏置组合，产生具有最小化或消除的舍入误差的精度降低的信号。 可选择的偏压对应于偏置，误差信号，输入基准，精密数据精度及其组合之一的预定特性。

    Apparatus and method for reducing precision of data
    2.
    发明授权
    Apparatus and method for reducing precision of data 失效

    公开(公告)号：US07035892B2

    公开(公告)日：2006-04-25

    申请号：US09735170

    申请日：2000-12-11

    申请人： Tracy C. Denk ,  Jeffrey S. Putnam

    发明人： Tracy C. Denk ,  Jeffrey S. Putnam

    IPC分类号： G06F7/38

    CPC分类号： G06F7/49942 ,  G06F7/48 ,  G06F7/49963

    摘要： Methods and apparatus for reducing precision of an input signal, by comparing a portion of the input signal to a preselected threshold value, and determining a selectable bias responsive to the comparison. By combining a portion of the input signal with the selectable bias, a reduced precision signal, having minimized or eliminated rounding error, is generated. The selectable bias corresponds to a predetermined characteristic of one of bias, an error signal, the input datum, the reduced precision datum, and a combination thereof.

    Apparatus and method for reducing precision of data
    3.
    发明授权
    Apparatus and method for reducing precision of data 失效
    降低数据精度的装置和方法

    公开(公告)号：US06874007B2

    公开(公告)日：2005-03-29

    申请号：US10672187

    申请日：2003-09-26

    申请人： Tracy C. Denk ,  Jeffrey S. Putnam

    发明人： Tracy C. Denk ,  Jeffrey S. Putnam

    IPC分类号： G06F7/00 ,  G06F7/38 ,  G06F7/48 ,  G06F7/499

    CPC分类号： G06F7/49942 ,  G06F7/48 ,  G06F7/49963

    摘要： Methods and apparatus for reducing precision of an input signal, by comparing a portion of the input signal to a preselected threshold value, and determining a selectable bias responsive to the comparison. By combining a portion of the input signal with the selectable bias, a reduced precision signal, having minimized or eliminated rounding error, is generated. The selectable bias corresponds to a predetermined characteristic of one of bias, an error signal, the input datum, the reduced precision datum, and a combination thereof.

    摘要翻译： 通过将输入信号的一部分与预选阈值进行比较来降低输入信号的精度，以及响应于比较来确定可选择的偏置的方法和装置。 通过将输入信号的一部分与可选择的偏置组合，产生具有最小化或消除的舍入误差的精度降低的信号。 可选择的偏压对应于偏置，误差信号，输入基准，精密数据精度及其组合之一的预定特性。

    All digital radio frequency modulator
    9.
    发明授权
    All digital radio frequency modulator 有权
    全数字射频调制器

    公开(公告)号：US07847864B1

    公开(公告)日：2010-12-07

    申请号：US10372427

    申请日：2003-02-21

    申请人： Steven Jaffe ,  Tracy C. Denk ,  Erik Berg ,  Amy Hundhausen

    发明人： Steven Jaffe ,  Tracy C. Denk ,  Erik Berg ,  Amy Hundhausen

    IPC分类号： H04N5/40

    CPC分类号： H04N5/40 ,  H04N7/06 ,  H04N7/08 ,  H04N21/4122

    摘要： All digital RF modulator. An RF modulator, implemented using only digital techniques, obviates the need for an additional board, implemented using discrete analog components, to perform the necessary modulation to provide the RF output signal for use with a display device (television). Modern displays typically include functionality to support a number of input types beyond an RF input. However, older, legacy displays typically only support inputs that are RF in nature. A fully integrated solution that performs the RF modulation of the output signal that may be used in such legacy types systems is provided using digital techniques.

    摘要翻译： 所有数字RF调制器。 仅使用数字技术实现的RF调制器避免了使用离散模拟组件实现的附加板来执行必要的调制以提供与显示设备（电视）一起使用的RF输出信号的需要。 现代显示器通常包括支持RF输入以外的多种输入类型的功能。 然而，较旧的遗留显示器通常仅支持RF性质的输入。 使用数字技术提供了可以在这种传统类型系统中使用的输出信号的RF调制的完全集成的解决方案。

    Filter structure and method
    10.
    发明授权
    Filter structure and method 失效
    过滤器结构和方法

    公开(公告)号：US06377619B1

    公开(公告)日：2002-04-23

    申请号：US08937665

    申请日：1997-09-26

    申请人： Tracy C. Denk ,  Patrik Larsson ,  Christopher John Nicol

    发明人： Tracy C. Denk ,  Patrik Larsson ,  Christopher John Nicol

    IPC分类号： H03H730

    CPC分类号： H03H17/06

    摘要： Multiported register files are employed to implement the input delays necessary for finite impulse response (FIR) filter operation. A multiported register file is a memory, typically small, with at least one read port and one write port. Data written into the multiported register file may be read out therefrom in any desired order. The multiported register tile may have additional output ports from which the data stored therein may be read out, also in any desired order, and independent from the order of any other output port. At least one output of each multiported register file is coupled to the input of the next stage of the FIR filter, if any. In addition, each multiported register file feeds data from one output to the multiply-add portion of its associated stage of the FIR filter. When the introduction of at least one sample delay for a particular sample is necessary, the multiported register file storing that sample is operated to supply, as an output, data that was previously stored therein, regardless of any data currently being supplied to it as input. In contrast, when no sample delay is required for a particular sample to reach a particular multiported register file, the multiported register files in the path of that sample are operated in a lookthrough mode. The read and write addresses, as well as the write enable signals for each multiported register file may be supplied in a pipelined manner.

    摘要翻译： 采用多端口寄存器文件来实现有限脉冲响应（FIR）滤波器操作所需的输入延迟。 多端口寄存器文件是一个通常很小的内存，至少有一个读端口和一个写端口。 写入多端口寄存器文件的数据可以以任何所需的顺序读出。 多端口寄存器块可以具有附加的输出端口，其中存储在其中的数据也可以以任何期望的顺序读出，并且独立于任何其它输出端口的顺序。 每个多端口寄存器文件的至少一个输出耦合到FIR滤波器的下一级的输入端（如果有的话）。 此外，每个多端口寄存器文件将数据从一个输出馈送到其FIR滤波器的相关级的乘法部分。 当需要对特定样本引入至少一个采样延迟时，存储该采样的多端口寄存器文件被操作以提供作为输出的先前存储在其中的数据，而不管当前作为输入提供给它的任何数据如何 。 相反，当特定样品不需要采样延迟来到达特定的多端口寄存器文件时，该样本路径中的多端口寄存器文件以查阅模式运行。 可以以流水线的方式提供读取和写入地址以及每个多端口寄存器堆的写使能信号。