Phase locked loop circuit
    1.
    发明授权
    Phase locked loop circuit 失效
    锁相环电路

    公开(公告)号:US4392253A

    公开(公告)日:1983-07-05

    申请号:US220112

    申请日:1980-12-24

    CPC分类号: H03J5/0281 H03J1/005

    摘要: A frequency synthesized receiver utilizes, as a local oscillator, a phase-locked circuit formed of a reference signal oscillator, a voltage controlled oscillator, a programmable divider, a phase comparator, and a low-pass filter. For tuning to a desired frequency, the dividing ratio of the programmable divider is controlled by an up/down counter connected in parallel with a shift register. The latter is supplied with a clock pulse signal and a binary coded selecting signal furnished from a micro computer. The selecting signal corresponds to a desired broadcast frequency. The up/down counter is caused by the micro computer to count up or down from the count value stored in the shift register, thereby causing the received frequency to rapidly sweep, at predetermined steps of, for example, 100 KHz.

    摘要翻译: 频率合成接收机利用由参考信号振荡器,压控振荡器,可编程分频器,相位比较器和低通滤波器构成的锁相电路作为本地振荡器。 为了调谐到所需的频率,可编程分频器的分频比由与移位寄存器并联连接的上/下计数器控制。 后者被提供有从微型计算机提供的时钟脉冲信号和二进制编码选择信号。 选择信号对应于所需的广播频率。 上下计数器由微计算机从存储在移位寄存器中的计数值向上或向下计数,从而使得接收到的频率以例如100KHz的预定步骤快速扫描。

    Tuning apparatus of phase-locked loop type
    2.
    发明授权
    Tuning apparatus of phase-locked loop type 失效
    锁相环调谐装置

    公开(公告)号:US4521744A

    公开(公告)日:1985-06-04

    申请号:US450793

    申请日:1982-12-17

    IPC分类号: H03J5/02 H04B1/26 H03L7/08

    CPC分类号: H03J5/0281

    摘要: A tuning apparatus of phase-locked loop type having a voltage controlled oscillator which is working as a local oscillator of a tuning circuit, a programmable divider supplied with the output signal from the voltage controlled oscillator, a reference frequency signal generating circuit, a phase comparator supplied with the output signal from the voltage controlled oscillator and the output signal from the reference frequency signal generating circuit, and supplying the output signal to the voltage controlled oscillator, the programmable divider, the reference frequency signal generating circuit and the phase comparator being formed in a single integrated circuit, and a control circuit formed separately from the integrated circuit for supplying a control data to the programmable divider in the single integrated circuit is disclosed, in which the integrated circuit further comprises a memory for memorizing the control data which is serially supplied from the control circuit and supplying the control data to the programmable divider in parallel.

    摘要翻译: 一种锁相环型调谐装置,具有作为调谐电路的本地振荡器工作的压控振荡器,由压控振荡器输出的可编程分频器,参考频率信号发生电路,相位比较器 提供来自压控振荡器的输出信号和来自参考频率信号发生电路的输出信号,并将输出信号提供给压控振荡器,可编程分频器,参考频率信号发生电路和相位比较器形成在 公开了一种集成电路,以及与用于将控制数据提供给单个集成电路中的可编程分频器的集成电路分开形成的控制电路,其中集成电路还包括用于存储串行提供的控制数据的存储器 从控制电路供电 控制数据并行到可编程分压器。

    Fundamental wave beat component detecting method and measuring target signal sampling apparatus and waveform observation system using the same
    5.
    发明授权
    Fundamental wave beat component detecting method and measuring target signal sampling apparatus and waveform observation system using the same 有权
    基波分量检测方法和测量目标信号采样装置及使用其的波形观测系统

    公开(公告)号:US08195416B2

    公开(公告)日:2012-06-05

    申请号:US12308263

    申请日:2008-04-04

    申请人: Yukio Tsuda

    发明人: Yukio Tsuda

    摘要: Frequencies of plural peak signals which appear in a band ½ of a sampling frequency are detected from a spectrum obtained from a measuring target signal sampled with the sampling frequency in order to detect the repetition frequency of the measuring target signal having plural harmonic components with a similar power. Each of the plural peak signals is successively assumed to be a fundamental wave beat component originating from the fundamental wave of the measuring target signal and theoretical frequencies of harmonic beat components originating from harmonic components of the measuring target signal are successively calculated. The theoretical frequencies are compared with the frequencies of the plural peak signals to determine one of the plural peak signals as a fundamental wave beat component originating from the fundamental wave of the measuring target signal.

    摘要翻译: 从采样频率采样的测量对象信号中获得的频谱中检测出出现在采样频率的1/2频带的多个峰值信号的频率,以便检测具有类似的多个谐波分量的测量目标信号的重复频率 功率。 多个峰值信号中的每一个被连续地假定为源自测量目标信号的基波的基波波形分量,并且连续地计算源自测量目标信号的谐波分量的谐波脉冲成分的理论频率。 将理论频率与多个峰值信号的频率进行比较,以确定多个峰值信号中的一个作为源自测量目标信号的基波的基波波形分量。

    Electrophotographic recording apparatus and method capable of recording
both characters and solid black picture images
    6.
    发明授权
    Electrophotographic recording apparatus and method capable of recording both characters and solid black picture images 失效
    能够记录字符和实心黑色图像的电子照相记录装置和方法

    公开(公告)号:US5252996A

    公开(公告)日:1993-10-12

    申请号:US760016

    申请日:1991-09-13

    申请人: Yukio Tsuda

    发明人: Yukio Tsuda

    摘要: An electrophotographic recording apparatus includes an exposing device for exposing a photosensitive member according to image data, a developing device for developing an electrostatic latent image created on the exposed photosensitive member, and a fixing device for fixing the developed image, and the exposing device includes an image data processing circuit for converting discontinuous black-level pixels included in the pixels of the image data which is constructed by a plurality of pixels selectively including black-level pixels and white-level pixels to a white level to create processed image data, and a line scanner for line-scanning the photosensitive member by a plurality of times according to the image data and the processed imaged data each time an image of one line is created so as to create an electrostatic latent image corresponding to a combination of the image data and the processed image data on the photosensitive member.

    摘要翻译: 一种电子照相记录装置,包括用于根据图像数据曝光感光构件的曝光装置,用于显影在曝光的感光构件上产生的静电潜像的显影装置和用于固定显影图像的定影装置,并且曝光装置包括: 图像数据处理电路,用于将由选择性地包括黑电平像素和白电平像素的多个像素构成的图像数据的像素中包括的不连续黑电平像素转换为白电平,以创建处理后的图像数据;以及 线扫描器,用于在每次创建一行的图像时根据图像数据和处理的成像数据多次扫描感光构件,以便产生与图像数据和图像数据的组合相对应的静电潜像 处理后的图像数据在感光构件上。

    Circuit switching system
    7.
    发明授权
    Circuit switching system 失效
    电路切换系统

    公开(公告)号:US5091932A

    公开(公告)日:1992-02-25

    申请号:US472450

    申请日:1990-01-19

    申请人: Yukio Tsuda

    发明人: Yukio Tsuda

    摘要: A circuit switching system for switching a circuit from a telephone to a facsimile. Circuit switching is performed by a signal, designating circuit switching delivered to the circuit. The circuit is monitored. When a signal designating circuit switching is detected from the circuit, the circuit is switched automatically from the telephone to the facsimile and a starting signal is applied to the facsimile.

    摘要翻译: 一种用于将电路从电话切换到传真的电路交换系统。 电路切换由信号执行,指定电路交换到电路。 电路被监控。 当从电路检测到信号指定电路切换时,电路自动从电话切换到传真机,并且启动信号被应用于传真机。

    Measured-signal repetition frequency detection method, and sampling apparatus and waveform observation system using the method
    8.
    发明授权
    Measured-signal repetition frequency detection method, and sampling apparatus and waveform observation system using the method 有权
    测量信号重复频率检测方法,采样装置和波形观测系统采用该方法

    公开(公告)号:US07936162B2

    公开(公告)日:2011-05-03

    申请号:US12224241

    申请日:2008-01-23

    申请人: Yukio Tsuda

    发明人: Yukio Tsuda

    IPC分类号: G01R23/00

    摘要: In a method of detecting a repetition frequency of a measured signal, in order to detect the waveform repetition frequency of the measured signal with high accuracy even in the presence of a frequency fluctuation in the measured signal, the repetition frequency of the measured signal acquired by the conventional method is used as a provisional repetition frequency, and the frequency change amount of the specified signal obtained in the case where the measured signal is sampled sequentially with a sampling frequency greatly changed from the provisional sampling frequency to generate a frequency fold at the time of sampling is detected. Based on the detected frequency change amount of the specified signal and the change amount of the sample number indicating how many times the frequency fold has occurred in the process, the error contained in the sampling number with a frequency fluctuation contained in the measured signal is calculated. Then, based on the error contained in this sample number, the provisional repetition frequency of the measured signal is corrected, thereby calculating the regular repetition frequency of the measured signal.

    摘要翻译: 在检测测量信号的重复频率的方法中,为了即使在存在测量信号中的频率波动的情况下也能以高精度检测测量信号的波形重复频率,测量信号的重复频率由 将常规方法用作临时重复频率,并且在以从临时采样频率大大改变的采样频率顺序采样测量信号的情况下获得的指定信号的频率变化量,以在该时间产生频率折叠 的检测。 基于检测到的指定信号的频率变化量和表示在该处理中发生频率多少倍的采样数的变化量,计算包含在测量信号中的频率波动的采样数中包含的误差 。 然后,基于该样本号中包含的误差,校正测量信号的临时重复频率,由此计算测量信号的规则重复频率。

    Measured-Signal Repetition Frequency Detection Method, and Sampling Apparatus and Waveform Observation System Using the Method
    9.
    发明申请
    Measured-Signal Repetition Frequency Detection Method, and Sampling Apparatus and Waveform Observation System Using the Method 有权
    测量信号重复频率检测方法以及使用该方法的采样设备和波形观测系统

    公开(公告)号:US20100225302A1

    公开(公告)日:2010-09-09

    申请号:US12224241

    申请日:2008-01-23

    申请人: Yukio Tsuda

    发明人: Yukio Tsuda

    IPC分类号: G01R13/00

    摘要: In a method of detecting a repetition frequency of a measured signal, in order to detect the waveform repetition frequency of the measured signal with high accuracy even in the presence of a frequency fluctuation in the measured signal, the repetition frequency of the measured signal acquired by the conventional method is used as a provisional repetition frequency, and the frequency change amount of the specified signal obtained in the case where the measured signal is sampled sequentially with a sampling frequency greatly changed from the provisional sampling frequency to generate a frequency fold at the time of sampling is detected. Based on the detected frequency change amount of the specified signal and the change amount of the sample number indicating how many times the frequency fold has occurred in the process, the error contained in the sampling number with a frequency fluctuation contained in the measured signal is calculated. Then, based on the error contained in this sample number, the provisional repetition frequency of the measured signal is corrected, thereby calculating the regular repetition frequency of the measured signal.

    摘要翻译: 在检测测量信号的重复频率的方法中,为了即使在存在测量信号中的频率波动的情况下也能以高精度检测测量信号的波形重复频率,测量信号的重复频率由 将常规方法用作临时重复频率,并且在以从临时采样频率大大改变的采样频率顺序采样测量信号的情况下获得的指定信号的频率变化量,以在该时间产生频率折叠 的检测。 基于检测到的指定信号的频率变化量和表示在该处理中发生频率多少次的采样数的变化量,计算包含在测量信号中的频率波动的采样数中包含的误差 。 然后,基于该样本号中包含的误差,校正测量信号的临时重复频率,由此计算测量信号的规则重复频率。

    Light wavelength measuring apparatus and method for measuring wavelength of subject light with high speed by using two-beam interferometer
    10.
    发明授权
    Light wavelength measuring apparatus and method for measuring wavelength of subject light with high speed by using two-beam interferometer 失效
    光波长测量装置和方法,通过使用双光束干涉仪来高速测量被摄体光的波长

    公开(公告)号:US06697160B2

    公开(公告)日:2004-02-24

    申请号:US10032186

    申请日:2001-12-21

    申请人: Yukio Tsuda

    发明人: Yukio Tsuda

    IPC分类号: G01B902

    CPC分类号: G01J9/0246

    摘要: A two-beam interferometer splits an incident light in two optical paths, combines and outputs split lights together again. The two-beam interferometer generates at least one or more combined light made from two beams each having a polarization different from each other. A polarization state detector detects a variation in the polarization of the combined light generated by the two-beam interferometer. An electric circuit calculates an wavelength of the incident light based on the variation in the polarization detected by the polarization state detector. The two optical paths of the two-beam interferometer has a difference in length between a point of splitting the incident light and a point of combining the split lights, for the detection of polarization variation in the combined light by the polarization state detector. The optical path length difference between the two paths is fixed.

    摘要翻译: 双光束干涉仪将入射光分成两个光路,将分离光再次组合并输出。 双光束干涉仪产生由具有彼此偏振的两个光束制成的至少一个或多个组合光。 偏振态检测器检测由双光束干涉仪产生的组合光的偏振变化。 电路根据由偏振状态检测器检测的极化的偏差来计算入射光的波长。 双光束干涉仪的两个光路在分离入射光的点与组合分光的点之间的长度差异,用于通过偏振状态检测器检测组合光中的偏振变化。 两路径之间的光程长度差是固定的。