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    • 1. 发明授权
    • Binarizing system of picture image signals
    • 图像信号二值化系统
    • US4731862A
    • 1988-03-15
    • US709662
    • 1985-03-08
    • Yukio TsudaFumio Owada
    • Yukio TsudaFumio Owada
    • G06K9/38H04N1/403
    • G06K9/38H04N1/403
    • A system preprocesses analog picture image signals formed by scanning a manuscript prior to binarization into signals representing black or white according to a predetermined threshold value, compares a digital signal of a picture element to be corrected and of a signal of a picture element at least one main scanning line before the picture element to be corrected and positioned at the same position as the picture element to be corrected in an auxiliary scanning direction which is attenuated with each main scanning line or lines are compared. The one of these two signals having a larger level at a given time is used as a reference signal showing the nature of tone of the manuscript. When the level of digital picture image signal of the picture element to be corrected is closer to a black or white than the level of the reference signal, the level of the digital picture image signal is adjusted towards black or white. In other cases, the level of the digital picture image signals is maintained. By this operation, the nature of tone of the manuscript is emphasized and the accuracy of judgement in later binarizing the analog picture image signals is improved.
    • 系统预处理通过根据预定阈值将二值化之前的原稿扫描成代表黑色或白色的信号而形成的模拟图像图像信号,将要校正的像素的数字信号和图像元素的信号至少一个 在要被校正的像素之前的主扫描线和与要被校正的像素在与每个主扫描线或线被衰减的辅助扫描方向上相同的位置被比较。 将在给定时间具有较大电平的这两个信号中的一个信号用作表示原稿色调性质的参考信号。 当要校正的像素的数字图像信号的电平比参考信号的电平更接近于黑色或白色时,数字图像信号的电平被调整为黑色或白色。 在其他情况下,维持数字图像信号的电平。 通过这种操作,强调了原稿的色调特性,并提高了后来对模拟图像信号进行二值化的判断精度。
    • 2. 发明授权
    • Binarizing system of picture image signals
    • 图像信号二值化系统
    • US4667249A
    • 1987-05-19
    • US709729
    • 1985-03-08
    • Fumio OwadaYukio Tsuda
    • Fumio OwadaYukio Tsuda
    • G06K9/38H04N1/403H04N1/40
    • G06K9/38H04N1/403
    • In a binarizing system wherein analog picture image signals produced by scanning a manuscript picture image is quantized and the quantized signals are converted into digital picture image signals which are binarized into signals representing black or white according to a predetermined threshold value, some picture image signals of picture elements on the same main scanning line as a picture element to be corrected and positioned before the picture element to be corrected among the digital picture image signals are selectively extracted, and at least one of the picture image signals whose level becomes a maximum or a minimum is further selected from the extracted picture image signals. The picture image signal thus selected is used as a reference signal showing the nature of tone of the manuscript picture image for subjecting the picture image signal of the picture image to be corrected to a calculation emphasizing the nature of tone of the picture image to be corrected in the manuscript picture image.
    • 在通过扫描原稿图像图像而产生的模拟图像信号被量化并且量化的信号被转换成根据预定阈值被二值化为表示黑色或白色的信号的数字图像信号的二值化系统中,一些图像信号 选择性地提取与要校正和定位在要被校正的像素之间的像素的相同主扫描线上的像素在数字图像信号中的等级变为最大的图像信号或 从所提取的图像信号中进一步选择最小值。 这样选择的图像信号用作参考信号,表示用于对图像的图像图像信号进行校正的原稿图像图像的色调的特性,以强调要校正的图像的色调的性质的计算 在手稿图片图片。
    • 5. 发明授权
    • Fundamental wave beat component detecting method and measuring target signal sampling apparatus and waveform observation system using the same
    • 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
    • US08195416B2
    • 2012-06-05
    • US12308263
    • 2008-04-04
    • Yukio Tsuda
    • Yukio Tsuda
    • G01R23/16G01R23/00H04B15/00G10L19/14
    • G01R23/20G01R13/0272G01R19/2509G01R23/14
    • 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.
    • 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。
    • 6. 发明授权
    • Electrophotographic recording apparatus and method capable of recording
both characters and solid black picture images
    • 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
    • US5252996A
    • 1993-10-12
    • US760016
    • 1991-09-13
    • Yukio Tsuda
    • Yukio Tsuda
    • G03G15/04G03G15/32H04N1/23H04N1/29G01D15/14
    • H04N1/295G03G15/04054G03G15/326G03G15/043
    • 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.
    • 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。
    • 8. 发明授权
    • Measured-signal repetition frequency detection method, and sampling apparatus and waveform observation system using the method
    • 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
    • US07936162B2
    • 2011-05-03
    • US12224241
    • 2008-01-23
    • Yukio Tsuda
    • Yukio Tsuda
    • G01R23/00
    • G01R23/14G01R13/0272G01R19/2509
    • 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.
    • 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。
    • 9. 发明申请
    • Measured-Signal Repetition Frequency Detection Method, and Sampling Apparatus and Waveform Observation System Using the Method
    • 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
    • US20100225302A1
    • 2010-09-09
    • US12224241
    • 2008-01-23
    • Yukio Tsuda
    • Yukio Tsuda
    • G01R13/00
    • G01R23/14G01R13/0272G01R19/2509
    • 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.
    • 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。
    • 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
    • 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
    • US06697160B2
    • 2004-02-24
    • US10032186
    • 2001-12-21
    • Yukio Tsuda
    • Yukio Tsuda
    • G01B902
    • G01J9/0246
    • 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.
    • 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。