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1. 发明授权

US5319459A Method and apparatus for checking defect on display screen 失效
标题翻译：用于检查显示屏幕上的缺陷的方法和装置
公开(公告)号：US5319459A
公开(公告)日：1994-06-07
申请号：US857662
申请日：1992-03-26
申请人： Jun Mochizuki , Atsushi Yoshida , Toshio Asano , Kinuyo Hagimae , Daisuke Katsuta , Teruo Matsuo , Kazuo Majima , Masao Taniguchi
发明人： Jun Mochizuki , Atsushi Yoshida , Toshio Asano , Kinuyo Hagimae , Daisuke Katsuta , Teruo Matsuo , Kazuo Majima , Masao Taniguchi
IPC分类号： G01M11/00 , G09G5/00 , H04N17/04
CPC分类号： H04N17/04
摘要： An apparatus for identifying positions of pixel defects on a display screen, such as a cathode-ray tube or a liquid crystal display, operates to pick up an image signal of a display screen representing a predetermined image with an imaging camera, shift the image signal of the imaging camera by one pixel in one and another directions with respect to the display screen, and obtain a difference of a signal level between a defective portion and a normal portion on the screen, based on the signals obtained when the image signal of the imaging camera is shifted in one and another directions. The apparatus also serves to calculate a relative inclination between the imaging camera and the display screen for obtaining a difference of a signal level between a defective portion and a normal portion of each pixel. The results make it possible to clearly identify the difference of the signal level between the defective portion and the normal portion.
摘要翻译：用于识别诸如阴极射线管或液晶显示器的显示屏上的像素缺陷的位置的装置操作以用成像照相机拾取表示预定图像的显示屏幕的图像信号，将图像信号的摄像机相对于显示画面在一个方向和另一个方向上的一个像素，并且基于当屏幕上的缺陷部分和正常部分之间的信号电平的差异，成像相机在一个方向和另一个方向上移动。该装置还用于计算成像相机和显示屏幕之间的相对倾斜度，以获得每个像素的缺陷部分和法线部分之间的信号电平差。结果可以清楚地识别缺陷部分和法线部分之间的信号电平的差异。

2. 发明授权

US5034991A Character recognition method and system 失效
标题翻译：字符识别方法和系统
公开(公告)号：US5034991A
公开(公告)日：1991-07-23
申请号：US505586
申请日：1990-04-06
申请人： Kinuyo Hagimae , Seiji Hata , Souichi Yano
发明人： Kinuyo Hagimae , Seiji Hata , Souichi Yano
IPC分类号： G06K9/34 , G06K9/32 , G06K9/38 , G06K9/62 , G06K9/68
CPC分类号： G06K9/3283 , G06K9/348 , G06K9/38 , G06K9/4642 , G06K9/50 , G06K9/68 , G06K2209/01
摘要： Character recognition method and system in which a character indicated in a printed, stamped, carved or other form is two-dimensionally imaged and stored as image data and the stored image data is subjected to an image processing to recognize the character. The recognition of the character is performed in such a manner that each time the comparison of plural kinds of feature vectors extracted from the character to be recognized and a dictionary vector of each candidate character in a group of candidate characters preliminarily prepared is made for one of the plural kinds of feature vectors, a candidate character having its dictionary vector away from the extracted feature vector by a distance not smaller than a predetermined value is excluded from the candidate character group. The dictionary vector for each candidate character is defined as an average vector for a variety of fonts. A difference between the dictionary vector and the feature vector extracted from the character to be recognized is estimated by virtue of a deviation vector for the variety of fonts to produce an estimated value. The exclusion from the candidate character group is judged on the basis of the estimated values each of which is cumulatively produced each time the estimation for the difference is made.
摘要翻译：字符识别方法和系统，其中以印刷，冲压，雕刻或其他形式指示的字符被二维地成像并存储为图像数据，并且对所存储的图像数据进行图像处理以识别字符。执行字符的识别是这样一种方式，即每次从要识别的字符提取的多种特征向量的比较和预先准备的候选字符组中的每个候选人物的字典向量进行比较，从候选字符组中排除多种特征向量，其具有远离所提取的特征向量的字典向量不超过预定值的距离的候选字符。每个候选字符的字典向量被定义为各种字体的平均向量。借助于各种字体的偏差矢量来估计从要识别的字符提取的字典向量和特征向量之间的差异以产生估计值。基于在每次进行差异估计时累积产生的估计值来判断排除候选字符组的排除。

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