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公开(公告)号：US09787297B2
公开(公告)日：2017-10-10
申请号：US14647471
申请日：2013-11-26
申请人： NEC CORPORATION
发明人： Hiroyuki Igura
摘要： A waveform conversion unit (42) of a numerically controlled oscillator has a cosine table (101) and a sine table (102) in which parameters for cosine wave and sine wave signal generation are stored, a correction mechanism (50) for generating correction values according to the phase of an inputted phase signal, an adder (111) for generating a cosine wave signal from a parameter in the cosine table (101) and a correction value, and an adder (112) for generating a sine wave signal from a parameter in the sine table (102) and a correction value. The correction mechanism (50) uses waveform data which is a kind of parabolic data and whose phase interval is more minute than the phase interval of the parameters in each table (101), (102) to generate correction values for correcting cosine wave and sine wave signals to be found by linear interpolation.
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2.发明申请SIGNAL GENERATOR, SIGNAL GENERATION METHOD, AND NUMERICALLY CONTROLLED OSCILLATOR 有权信号发生器，信号发生方法和数字控制振荡器公开(公告)号：US20150311890A1
公开(公告)日：2015-10-29
申请号：US14647471
申请日：2013-11-26
申请人： NEC CORPORATION
发明人： Hiroyuki IGURA
摘要： A waveform conversion unit (42) of a numerically controlled oscillator has a cosine table (101) and a sine table (102) in which parameters for cosine wave and sine wave signal generation are stored, a correction mechanism (50) for generating correction values according to the phase of an inputted phase signal, an adder (111) for generating a cosine wave signal from a parameter in the cosine table (101) and a correction value, and an adder (112) for generating a sine wave signal from a parameter in the sine table (102) and a correction value. The correction mechanism (50) uses waveform data which is a kind of parabolic data and whose phase interval is more minute than the phase interval of the parameters in each table (101), (102) to generate correction values for correcting cosine wave and sine wave signals to be found by linear interpolation.
摘要翻译： 数控振荡器的波形转换单元（42）具有余弦表（101）和存储余弦波和正弦波信号生成参数的正弦表（102），用于产生校正值的校正机构（50） 根据输入的相位信号的相位，从余弦表（101）中的参数产生余弦波信号的加法器（111）和校正值，以及用于从正弦波信号生成正弦波信号的加法器（112） 正弦表（102）中的参数和校正值。 校正机构（50）使用作为抛物线数据的波形数据，并且其相位间隔比每个表（101），（102）中的参数的相位间隔更加微小，以产生用于校正余弦波和正弦的校正值 波形信号可以通过线性插值来找到。
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公开(公告)号：US20060044167A1
公开(公告)日：2006-03-02
申请号：US11209010
申请日：2005-08-22
IPC分类号： H03M3/00
CPC分类号： G06G7/30 , H03F3/45183
摘要： A linear interpolator is provided that includes differential pairs of transistors biased such that a first input voltage may be multiplied by a factor r wherein 0≦r≦1 and such that a second input voltage may be multiplied by the complement factor (1−r). By combining the multiplied input voltages, a linear interpolation is provided based upon the factor r.
摘要翻译： 提供了线性内插器，其包括被偏置的差分对晶体管，使得第一输入电压可以乘以因子r，其中0≤r≤1，并且使得第二输入电压可以乘以补码因子（1- r）。 通过组合倍增的输入电压，基于因子r提供线性内插。
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公开(公告)号：US20050110570A1
公开(公告)日：2005-05-26
申请号：US10724561
申请日：2003-11-26
CPC分类号： G06G7/30 , H03F3/45183
摘要： A linear interpolator is provided that includes differential pairs of transistors biased such that a first input voltage may be multiplied by a factor r wherein 0≦r≦1 and such that a second input voltage may be multiplied by the complement factor (1-r). By combining the multiplied input voltages, a linear interpolation is provided based upon the factor r.
摘要翻译： 提供了线性内插器，其包括被偏置的差分对晶体管，使得第一输入电压可以乘以因子r，其中0≤r≤1，并且使得第二输入电压可以乘以补码因子（1- r）。 通过组合倍增的输入电压，基于因子r提供线性内插。
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公开(公告)号：US5132552A
公开(公告)日：1992-07-21
申请号：US743789
申请日：1991-08-12
申请人： Takeshi Ito , Yuji Fujita
发明人： Takeshi Ito , Yuji Fujita
CPC分类号： G06G7/30
摘要： A linear interpolator comprising an amplifier, an integrator for integrating an output of the amplifier, a feedback circuit connected between the amplifier and the integrator for bootstrapping an input voltage of the amplifier by an output voltage from the integrator, and a switch for periodically supplying a staircase input signal to the amplifier. A linearly interpolated output is derived from the integrator. The discrete input signal changing stepwise can be linearly interpolated with high accuracy.
摘要翻译： 一种线性内插器，包括放大器，用于对放大器的输出进行积分的积分器，连接在放大器和积分器之间的反馈电路，用于通过来自积分器的输出电压自举放大器的输入电压;以及开关，用于周期性地提供 楼梯输入信号到放大器。 从积分器得到线性内插输出。 离散输入信号逐步变化可以高精度线性内插。
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公开(公告)号：US4176398A
公开(公告)日：1979-11-27
申请号：US881848
申请日：1978-02-27
申请人： Dennis G. Rider
发明人： Dennis G. Rider
摘要： Apparatus receiving step voltage inputs provides an output voltage that moves as a linear ramp from step to step. Each new input causes an amplifying circuit to connect a predetermined potential to an integrator, starting a new ramp. A comparator circuit receives voltages proportional respectively to the input and the ramp output, and when they become equal it stops the ramp. An inverter is automatically connected into the amplifying circuit when needed to change the polarity of the potential to the integrator, and thus to reverse the direction of the ramp. Manual and automatic adjusting and switching means control the operating sequences and parameters.
摘要翻译： 接收步进电压输入的装置提供一个从一步到一步的线性斜坡移动的输出电压。 每个新的输入使得放大电路将预定电位连接到积分器，开始新的斜坡。 比较器电路接收与输入和斜坡输出成比例的电压，当它们相等时，它停止斜坡。 当需要将反相器自动连接到放大电路中以改变积分器的电位极性，从而反转斜坡的方向。 手动和自动调节和切换意味着控制操作顺序和参数。
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公开(公告)号：US3127555A
公开(公告)日：1964-03-31
申请号：US70938358
申请日：1958-01-16
发明人： ETIENNE HONORE , EMILE TORCHEUX
CPC分类号： H03H7/09 , G06G7/163 , G06G7/30 , H01F21/02 , H01F21/06 , H03H7/1766 , H03H7/1775
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公开(公告)号：US3106639A
公开(公告)日：1963-10-08
申请号：US83761759
申请日：1959-09-02
申请人： AMOS NATHAN
发明人： AMOS NATHAN
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