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公开(公告)号：US4136821A
公开(公告)日：1979-01-30
申请号：US818669
申请日：1977-07-25
申请人： Akio Sugiura , Atutoshi Okamoto , Tadao Nojiri
发明人： Akio Sugiura , Atutoshi Okamoto , Tadao Nojiri
CPC分类号： G06K7/10831 , G02B7/32 , G06K7/10861 , G06K2207/1013
摘要： A light source, a converging lens and a light responsive image sensor are optically coupled to recognize the code information such as bar codes recorded on an object. The light source supplies the code information with illumination light and the image sensor receives the reflected light through the converging lens to convert it into the image signal. The distance between the lens and the image sensor is adjusted automatically in response to the image signal such that clear reflected light is received by the image sensor, whereby correct information recognizing operation is attained.
摘要翻译： 光源，会聚透镜和光响应图像传感器被光耦合以识别代码信息，例如记录在对象上的条形码。 光源用照明光提供编码信息，图像传感器通过会聚透镜接收反射光，将其转换为图像信号。 响应于图像信号自动调整透镜和图像传感器之间的距离，使得图像传感器接收到清晰的反射光，从而获得正确的信息识别操作。
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公开(公告)号：US4114033A
公开(公告)日：1978-09-12
申请号：US765753
申请日：1977-02-04
申请人： Atutoshi Okamoto , Tadao Nojiri , Masahiro Nomura
发明人： Atutoshi Okamoto , Tadao Nojiri , Masahiro Nomura
IPC分类号： G06K19/06
CPC分类号： G06K19/06037
摘要： A great number of bar codes are recorded in dual directions on a bar code information card. Each bar code is comprised of a plurality of bar symbols juxtaposed in parallel to each other. A plurality of bar codes, constituting one group bar code, are arranged in one direction which is orthogonal to the bar symbol and a plurality of group bar codes are arranged in the other direction in which the bar symbol extends. A great deal of bar-coded information is recognized by transferring the bar code information card in the longitudinal direction of the bar symbol and scanning the bar code orthogonally thereto.
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公开(公告)号：US4096992A
公开(公告)日：1978-06-27
申请号：US823737
申请日：1977-08-11
申请人： Tadao Nojiri , Akio Sugiura
发明人： Tadao Nojiri , Akio Sugiura
CPC分类号： G06K7/1486 , G06K19/06028 , G06K7/016 , G06K7/14
摘要： A bar code having a plurality of parallel bars recorded in either narrow width or wide width is scanned by a plurality of light responsive elements which are driven one by one by a clock pulse of a fixed frequency. The intermittent output image signal of the elements is converted into a continuous signal by sample-and holding the peak level of the image signal at the same frequency as that of the clock pulse. The continuous signal is then compared with a reference value to be converted into a rectangular signal which has time intervals proportional to respective bar widths. For discriminating each bar width, each time interval of the rectangular signal is measured by counting a clock pulse of another fixed frequency and compared with another reference value. The frequency of the clock pulse for interval measuring purpose is determined to be higher than that of the clock pulse for scanning and sample-and-holding purposes.
摘要翻译： 具有以窄宽或宽宽度记录的多个平行条的条形码被多个光响应元件扫描，该多个光响应元件被固定频率的时钟脉冲逐个驱动。 通过采样将元件的间歇输出图像信号转换为连续信号，并将图像信号的峰值电平保持在与时钟脉冲相同的频率。 然后将连续信号与参考值进行比较，以转换成具有与各个条宽度成比例的时间间隔的矩形信号。 为了区分每个条宽，矩形信号的每个时间间隔通过对另一个固定频率的时钟脉冲进行计数并与另一个参考值进行比较来测量。 用于间隔测量目的的时钟脉冲的频率被确定为高于用于扫描和采样保持目的的时钟脉冲的频率。
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公开(公告)号：US4074115A
公开(公告)日：1978-02-14
申请号：US742121
申请日：1976-11-15
申请人： Akio Sugiura , Tadao Nojiri
发明人： Akio Sugiura , Tadao Nojiri
摘要： A card on which at least a group of bar-coded information are printed is carried by a motor-driven carrier. The bar-coded information is sensed and converted into a group of parallel digital signals, which is compared with a previously stored data to check coincidence. The same bar-coded information is repeatedly sensed, converted, and compared as above and number of the coincidence times is counted until it has passed a read-in position driven by the card carrier. The card is accepted as readable when the number of coincidence times reaches a preset number. Otherwise, it is rejected by reversing the motor.
摘要翻译： 其上印刷有至少一组条形码信息的卡由电动机承载器承载。 条形编码信息被感测并转换成一组并行数字信号，其与先前存储的数据进行比较以检查重合。 如上所述重复地检测，转换和比较相同的条形编码信息，并且计数一致时间的数量，直到其经过由卡片载体驱动的读入位置。 当符合次数达到预设值时，该卡被接受为可读。 否则，通过反转电机被拒绝。
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公开(公告)号：US4114030A
公开(公告)日：1978-09-12
申请号：US756699
申请日：1977-01-04
申请人： Tadao Nojiri , Akio Sugiura , Masahiro Nomura
发明人： Tadao Nojiri , Akio Sugiura , Masahiro Nomura
CPC分类号： G06K7/1093 , G06K7/10851
摘要： A light source and a light responsive sensor are optically coupled to recognize information such as bar codes recorded on an object. The light source projects illumination light onto the object and the sensor receives the reflected light the density of which represents the recorded information. The sensor is swept to convert the light density into an image signal which is then passed through a filter. An image signal, the low frequency noise signal component resulting from the fluctuation of the illumination light being excluded therefrom by the filter, is available for recognizing the recorded information precisely.
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公开(公告)号：US4135663A
公开(公告)日：1979-01-23
申请号：US828593
申请日：1977-08-29
申请人： Tadao Nojiri , Akio Sugiura
发明人： Tadao Nojiri , Akio Sugiura
CPC分类号： G06K7/14
摘要： A system for recognizing bar code information having a plurality of bar codes. One of bar codes is constituted as an index code in a different manner from the other bar codes constituted as numerical codes. These bar codes are scanned sequentially and converted into corresponding parallel digital signals. Code scanning directions are discriminated with reference to the parallel digital signal corresponding to the index code. A plurality of registers adapted to memorize each parallel digital signal are triggered in forward and reverse sequences, when the scanning directions are discriminated to be forward and reverse, respectively.
摘要翻译： 一种用于识别具有多个条形码的条形码信息的系统。 条形码之一被构成为与作为数字代码构成的其他条形码不同的索引码。 这些条形码被顺序地扫描并转换成对应的并行数字信号。 代码扫描方向参照对应于索引代码的并行数字信号进行鉴别。 当扫描方向分别被正向和反向分别被识别时，多个适于存储每个并行数字信号的寄存器以正向和反向顺序被触发。
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公开(公告)号：US6135353A
公开(公告)日：2000-10-24
申请号：US176432
申请日：1998-10-21
申请人： Koji Konosu , Akio Sugiura , Tadao Nojiri , Kunihiro Motizuki
发明人： Koji Konosu , Akio Sugiura , Tadao Nojiri , Kunihiro Motizuki
CPC分类号： G06K7/10722
摘要： A 2-dimensional code reader includes a camera for scanning a surface which carries a 2-dimensional code thereon, an amplifier for amplifying electric signals fed from the camera, a device for identifying a code-region out of the scanned surface and a device for detecting information contained in the 2-dimensional code. The amplifying rate or gain is controlled according to a signal level representing a brightness of the identified code-region, not depending on a brightness of a whole scanned surface. The amplifier may includes an automatic gain controller which controls the amplifying rate according to the brightness of the whole scanned surface. In this case, the amplifying rate is adjusted based on an areal ratio of the code-region to the whole scanned surface area to obtain a clear image of the code, irrespective of the brightness of the scanned surface. Some symbol marks may be included in the 2-dimensional code in order to effectively identify the code-region on the scanned surface.
摘要翻译： 二维码读取器包括用于扫描其上携带二维码的表面的照相机，用于放大从相机馈送的电信号的放大器，用于识别扫描表面之外的码区域的装置，以及用于 检测包含在二维码中的信息。 根据表示所识别的码区域的亮度的信号电平来控制放大率或增益，而不依赖于整个扫描表面的亮度。 放大器可以包括自动增益控制器，其根据整个扫描表面的亮度来控制放大率。 在这种情况下，无论扫描面的亮度如何，基于代码区域与整个扫描表面积的面积比调整放大率，以获得代码的清晰图像。 为了有效地识别被扫描表面上的代码区，可以在二维码中包含一些符号标记。
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公开(公告)号：US4147295A
公开(公告)日：1979-04-03
申请号：US813426
申请日：1977-07-06
申请人： Tadao Nojiri , Akio Sugiura
发明人： Tadao Nojiri , Akio Sugiura
CPC分类号： G06K7/10851 , G06K7/14 , G06K7/1486
摘要： A bar code recognition system in which a threshold value for discriminating each bar of bar codes is automatically corrected. Bar codes representing information are constituted by a combination of wide and narrow bars to be scanned and converted into a rectangular signal having a time width proportional to the width of each bar. In proportion to the total time widths of the rectangular signal generated in each scanning cycle, the threshold value with reference to which each bar width is discriminated is determined to enhance the recognition operation of the system.
摘要翻译： 一种条形码识别系统，其中用于区分条形码条的阈值被自动校正。 表示信息的条形码由要扫描的宽条和窄条的组合构成，并且被转换为具有与每个条的宽度成比例的时间宽度的矩形信号。 与在每个扫描周期中产生的矩形信号的总时间宽度成比例，确定鉴别每个条宽的阈值，以增强系统的识别操作。
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公开(公告)号：US4140271A
公开(公告)日：1979-02-20
申请号：US668036
申请日：1976-03-18
申请人： Tadao Nojiri , Akio Sugiura , Masahiro Nomura
发明人： Tadao Nojiri , Akio Sugiura , Masahiro Nomura
IPC分类号： G06K7/10
CPC分类号： G06K7/1093
摘要： Bar symbols having different bar width for representing information are grouped and recorded on a surface of an object. A light-responsive sensor is swept automatically to repetitively scan the density of the surface-reflected light along the direction in which thegrouped bar symbols are arranged, while the object is moved orthogonally thereto. Electrical signals indicative of the bar width derived from the sensor are processed thereafter for the read-in of the coded data.
摘要翻译： 具有用于表示信息的不同条宽的条形符号被分组并记录在对象的表面上。 自动扫描光响应传感器，以沿物体与其正交移动的方向重复扫描表面反射光的沿着分组的条形符号排列方向的密度。 此后，对从传感器导出的条形宽度的电信号进行处理，以便读取编码数据。
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公开(公告)号：US06394349B1
公开(公告)日：2002-05-28
申请号：US09154587
申请日：1998-09-17
申请人： Hisashi Shigekusa , Tadao Nojiri
发明人： Hisashi Shigekusa , Tadao Nojiri
IPC分类号： G06K714
CPC分类号： G06K7/10732 , G06K7/14
摘要： An optical information reader which can promptly eliminate mirror reflection regions with high accuracy without the need for a plurality of expensive CCDS. When it is discriminated that mirror reflection regions exist in an image of a two-dimensional code obtained by a CCD under illumination condition 1, the condition is changed to illumination condition 2 and an image is obtained. If there is a mirror reflection region also in the new image, the previously obtained image and the new image are synthesized by calculating the OR. When no mirror reflection regions exist in the synthesized image, a decoding is executed. Since it is sufficient to use only one CCD in the optical information reader, system cost is minimized. As images are obtained by the same CCD, even if images are synthesized, a positional deviation does not occur, the mirror reflection regions can be promptly eliminated with high accuracy, and an obtained image is accordingly very accurate.
摘要翻译： 一种光学信息读取器，其可以以高精度快速消除镜面反射区域，而不需要多个昂贵的CCDS。 当在照明条件1下鉴别出由CCD获得的二维码的图像中存在镜面反射区域时，将条件改变为照明条件2并获得图像。 如果在新图像中也存在镜面反射区域，则通过计算OR来合成先前获得的图像和新图像。 当合成图像中不存在镜面反射区域时，执行解码。 由于在光学信息读取器中仅使用一个CCD就足够了，所以系统成本最小化。 由于通过相同的CCD获得图像，即使合成图像，也不会发生位置偏差，因此可以高精度地迅速消除镜面反射区域，因此获得的图像非常准确。
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