公开(公告)号：US5519199A

公开(公告)日：1996-05-21

申请号：US307450

申请日：1994-09-21

申请人： Mitsuo Watanabe ,  Hiroaki Kawai ,  Shinichi Sato ,  Ichiro Shinoda

发明人： Mitsuo Watanabe ,  Hiroaki Kawai ,  Shinichi Sato ,  Ichiro Shinoda

IPC分类号： G06K7/10 ,  G06K7/14

CPC分类号： G06K7/1486 ,  G06K7/14

摘要： This invention is intended to contribute to improvements of the reading accuracy of a bar code reader and performance of a POS system or the like. To attain this object, according to the invention, when one of the data blocks constituting a bar code cannot be detected, addresses of the non-detected data block are determined based on a width of the detected data block and addresses of the center bar. The invention is constituted such that data of the previously non-detected data block is detected based on its addresses.

摘要翻译： 本发明旨在有助于提高条形码读取器的读取精度和POS系统的性能等。 为了达到这个目的，根据本发明，当不能检测构成条形码的数据块之一时，根据检测数据块的宽度和中心条的地址来确定未检测数据块的地址。 本发明构成为基于其地址来检测先前未检测的数据块的数据。

公开(公告)号：US5502296A

公开(公告)日：1996-03-26

申请号：US310045

申请日：1994-09-21

申请人： Hiroaki Kawai ,  Mitsuo Watanabe ,  Shinichi Sato ,  Ichiro Shinoda ,  Motohiko Itoh

发明人： Hiroaki Kawai ,  Mitsuo Watanabe ,  Shinichi Sato ,  Ichiro Shinoda ,  Motohiko Itoh

IPC分类号： G06K7/00 ,  G06K7/10 ,  G06K7/14

CPC分类号： G06K7/10851 ,  G06K7/14 ,  G06K7/1486

摘要： An apparatus for demodulating bar codes is disclosed. In this apparatus of this invention, a distortion quantity calculation unit for calculates a distortion quantity of a bar width of a character to be demodulated by use of bar code data generated by reading the bar codes in which characters are expressed by bar widths. A distortion quantity determining unit determines whether or not a bar width distortion quantity calculated by the distortion quantity calculation unit falls within a range of predetermined values. A first demodulation unit, when determining that the distortion quantity of the bar width falls within the range of the predetermined values, demodulates the character from the bar code data by effecting a first correcting process on the bar width distortion quantity. A second demodulation unit, when determining that the distortion quantity of the bar width does not fall within the range of the predetermined values, demodulates the character from the bar code data by effecting a second correcting process on the distortion quantity of the bar width.

摘要翻译： 公开了一种用于解调条形码的装置。 在本发明的该装置中，一种失真量计算单元，用于通过使用通过读取通过条形宽度表示字符的条形码产生的条形码数据来计算要解调的字符的条形宽度的失真量。 失真量确定单元确定由失真量计算单元计算出的条宽失真量是否在预定值的范围内。 第一解调单元，当确定条宽的失真量落在预定值的范围内时，通过对条宽失真量进行第一校正处理来解码来自条形码数据的字符。 第二解调单元，当确定条宽度的失真量不落在预定值的范围内时，通过对条宽的失真量进行第二校正处理来解码来自条形码数据的字符。

公开(公告)号：US5414252A

公开(公告)日：1995-05-09

申请号：US833493

申请日：1992-02-10

申请人： Ichiro Shinoda ,  Tomoyuki Kashiwazaki ,  Akira Okawado ,  Kazumasa Moriya ,  Shinichi Sato ,  Motohiko Itoh ,  Mitsuo Watanabe ,  Hiroaki Kawai

发明人： Ichiro Shinoda ,  Tomoyuki Kashiwazaki ,  Akira Okawado ,  Kazumasa Moriya ,  Shinichi Sato ,  Motohiko Itoh ,  Mitsuo Watanabe ,  Hiroaki Kawai

IPC分类号： G06K7/14 ,  G06K7/10

CPC分类号： G06K7/1491 ,  G06K7/14 ,  G06K7/1486

摘要： A bar code reader using a high speed scanner, containing: a scanning unit scanning a surface on which a bar code is printed; a bar width detecting unit successively detecting widths of bars; a bar width storing unit storing the widths; an address generating unit generating an address of the bar width storing unit at which each of the widths is to be stored; a fast screening unit determining whether a set of widths successively detected by the bar width detecting unit satisfies a predetermined condition for the set of widths constituting a complete bar code; and a bar code decoding unit reading a set of successive widths from the generated address, and decoding the bar code determined by the complete bar code detecting unit. A type of bar code detecting unit detecting a type of bar code constituted by the detected widths, and an address & type storing unit storing the detected type of bar code, together with information on the generated addresses for the widths of the bar code, may be inserted. The bar code decoding unit contains specific type decoding units for respectively decoding types of bar codes. The bar code decoding unit reads the stored widths from the addresses indicated by the information stored in the address & type storing unit, and decodes the bar code using one of the specific type decoding unit corresponding to the type stored in the address & type storing unit together with the above information.

摘要翻译： 一种使用高速扫描器的条形码阅读器，包括：扫描单元，扫描其上印有条形码的表面; 条宽检测单元，连续地检测条的宽度; 存储宽度的条宽存储单元; 产生要存储每个宽度的条宽存储单元的地址的地址产生单元; 快速筛选单元确定由条宽检测单元连续检测到的一组宽度是否满足构成完整条形码的宽度的一组宽度的预定条件; 以及条形码解码单元，从所生成的地址读取一组相继的宽度，并解码由完整的条形码检测单元确定的条形码。 一种条形码检测单元检测由检测到的宽度构成的条形码类型，以及存储检测到的条形码类型的地址和类型存储单元以及关于条形码宽度的生成地址的信息。 被插入。 条形码解码单元包含用于分别解码条形码类型的特定类型解码单元。 条形码解码单元从存储在地址和类型存储单元中的信息所指示的地址中读取存储的宽度，并且使用与存储在地址和类型存储单元中的类型对应的特定类型解码单元之一对条形码进行解码 以及上述信息。

公开(公告)号：US5095203A

公开(公告)日：1992-03-10

申请号：US598162

申请日：1990-10-16

申请人： Shinichi Sato ,  Takeshi Ishii ,  Tamotsu Takahashi ,  Yoshihiro Oyama ,  Tatsuo Sasaki ,  Mitsuo Watanabe ,  Ichiro Shinoda ,  Hiroaki Katoh ,  Nobuyuki Kitamura ,  Motohiko Ito ,  Tomoyuki Kashiwazaki ,  Hiroaki Kawai

发明人： Shinichi Sato ,  Takeshi Ishii ,  Tamotsu Takahashi ,  Yoshihiro Oyama ,  Tatsuo Sasaki ,  Mitsuo Watanabe ,  Ichiro Shinoda ,  Hiroaki Katoh ,  Nobuyuki Kitamura ,  Motohiko Ito ,  Tomoyuki Kashiwazaki ,  Hiroaki Kawai

IPC分类号： G01S17/02 ,  G06K7/10

CPC分类号： G06K7/10861 ,  G01S17/026 ,  G06K2207/1012

摘要： An article detection device includes: a light emission unit for emitting a detection light for irradiation onto an article, and a light reception unit for receiving a light reflected from the article. The article detection device also includes; an analog-to-digital converter for converting the reflected light to a digital signal, a first register for storing the digital signal after being sampled using a first sampling signal having a first period, and a second register for storing the digital signal after being sampled using a second sampling signal having a second period shorter than the first period. The article detection device further includes a control unit for generating the first and second sampling signals to be sent to the first and second registers, reading the digital signal stored in the first and second registers, calculating a difference between the digital signals in the first register and second register, comparing an absolute value of the difference with a predetermined threshold value, and detecting the article when the absolute value is larger than the threshold value.

公开(公告)号：US5898163A

公开(公告)日：1999-04-27

申请号：US718891

申请日：1996-09-24

申请人： Shinichi Sato ,  Motohiko Itoh ,  Mitsuo Watanabe ,  Ichiro Shinoda ,  Isao Iwaguchi ,  Hiroaki Kawai

发明人： Shinichi Sato ,  Motohiko Itoh ,  Mitsuo Watanabe ,  Ichiro Shinoda ,  Isao Iwaguchi ,  Hiroaki Kawai

IPC分类号： G06K7/00 ,  G06K7/10

CPC分类号： G06K7/10851

摘要： A process for reading optical codes includes reading an optical code by irradiating a scan ing beam onto an optical code and detecting a reflected beam of the scanning beam from the optical code. A determination is made if the optical code and an optical code reader are moving relative to each other, and data of the optical code are invalidated if it is determined that the optical code and the optical code reader are moving relative to each other, and data of the optical code are validated if it is determined the optical code and the optical code reader are not moving relative to each other.

摘要翻译： 用于读取光学代码的处理包括通过将扫描光束照射到光学代码上并从光学代码检测扫描光束的反射光束来读取光学代码。 如果光学代码和光学代码读取器相对于彼此移动，则确定光学代码的数据如果确定光学代码和光学代码读取器相对于彼此移动，则其无效数据 如果确定光学代码并且光学代码读取器不相对于彼此移动，则验证光学代码。

公开(公告)号：US5979765A

公开(公告)日：1999-11-09

申请号：US157386

申请日：1998-09-21

申请人： Mitsuo Watanabe ,  Ichiro Shinoda ,  Shinichi Sato ,  Isao Iwaguchi ,  Hiroaki Kawai ,  Motohiko Itoh

发明人： Mitsuo Watanabe ,  Ichiro Shinoda ,  Shinichi Sato ,  Isao Iwaguchi ,  Hiroaki Kawai ,  Motohiko Itoh

IPC分类号： G06K7/14 ,  G06K7/10

CPC分类号： G06K7/1491 ,  G06K7/14 ,  G06K7/1443 ,  G06K7/1486

摘要： A bar-code reader and a bar-code reading method each of which can perform an accurate, quick reading operation. The bar-code reader scans a bar-code with electromagnetic radioactive rays and then extracts data regarding a bar-width thereof based on the reflected rays; demodulates the bar-width data and creates the demodulated data; judges the presence or absence of a bar-code reproducible combination in the demodulated data and judges the type of combination when the reproducible combination exists; and synthesizes the demodulated data or the character forming the demodulated data according to the type of combination. The bar-code reader and bar-code reading method can be applicable to scanners such as POS systems used in supermarkets, distribution industries, and the like.

摘要翻译： 条形码读取器和条形码读取方法，每种读取方法都可以执行准确，快速的阅读操作。 条形码阅读器用电磁放射线扫描条形码，然后根据反射光线提取关于其宽度的数据; 解调条宽数据并产生解调数据; 在解调数据中判断条形码可重复组合的存在或不存在，并且当存在可再现组合时判断组合的类型; 并且根据组合的类型来合成解调数据或形成解调数据的字符。 条形码读取器和条形码读取方法可以适用于诸如超市，配送行业等中使用的POS系统的扫描仪。

公开(公告)号：US5756983A

公开(公告)日：1998-05-26

申请号：US718891

申请日：1996-09-24

申请人： Shinichi Sato ,  Motohiko Itoh ,  Mitsuo Watanabe ,  Ichiro Shinoda ,  Isao Iwaguchi ,  Hiroaki Kawai

发明人： Shinichi Sato ,  Motohiko Itoh ,  Mitsuo Watanabe ,  Ichiro Shinoda ,  Isao Iwaguchi ,  Hiroaki Kawai

IPC分类号： G06K7/00 ,  G06K7/10

CPC分类号： G06K7/10851

摘要： A process for reading optical codes includes reading an optical code by irradiating a scanning beam onto an optical code and detecting a reflected beam of the scanning beam from the optical code. A determination is made if the optical code and an optical code reader are moving relative to each other, and data of the optical code are invalidated if it is determined that the optical code and the optical code reader are moving relative to each other, and data of the optical code are validated if it is determined the optical code and the optical code reader are not moving relative to each other.

摘要翻译： 读取光学代码的过程包括通过将扫描光束照射到光学代码上并从光学代码检测扫描光束的反射光束来读取光学代码。 如果光学代码和光学代码读取器相对于彼此移动，则确定光学代码的数据如果确定光学代码和光学代码读取器相对于彼此移动，则其无效数据 如果确定光学代码并且光学代码读取器不相对于彼此移动，则验证光学代码。

公开(公告)号：US5393968A

公开(公告)日：1995-02-28

申请号：US113596

申请日：1993-08-27

申请人： Mitsuo Watanabe ,  Shinichi Sato ,  Hiroaki Kawai ,  Ichiro Shinoda

发明人： Mitsuo Watanabe ,  Shinichi Sato ,  Hiroaki Kawai ,  Ichiro Shinoda

IPC分类号： G06K7/10 ,  G06K7/14

CPC分类号： G06K7/14

摘要： The present invention relates to a bar code reading method and a bar code reader applied preferably to POS systems used in the distribution industry. The object of the invention is to achieve an improved reading ratio or a reduced erroneous reading ratio in practical use by evaluating quantitatively the reliability of demodulation data and by performing a coincidence checking plural times only when a large error is recognized. When a reading distortion amount measured is within a predetermined allowable value, data extracted and demodulated from the bar code is judged to be valid, whereby the bar code reading is completed. When a reading distortion amount measured is not within the predetermined allowable value, if the same data from the bar code is extracted and demodulated continuously and at least twice, the same data extracted and demodulated from the bar code is judged to be valid, whereby the bar code reading is completed.

摘要翻译： 本发明涉及一种条形码读取方法和条形码读取器，其优选地应用于分配业中使用的POS系统。 本发明的目的是在实际使用中通过定量地评估解调数据的可靠性并且仅当识别出大的误差时才执行多次重复检查来实现改进的读取比或减小的错误读取比。 当测量的读取失真量在预定的允许值内时，判断从条形码提取和解调的数据是有效的，由此条形码读取完成。 当测量的读取失真量不在预定的允许值内时，如果来自条形码的相同数据被连续地提取和解调并且至少两次，则从条形码提取和解调的相同数据被判定为有效，由此 条码阅读完成。

公开(公告)号：US5163063A

公开(公告)日：1992-11-10

申请号：US650422

申请日：1991-02-04

申请人： Yukio Yoshikawa ,  Takeshi Ishii ,  Yoshihiro Oyama ,  Tatsuo Sasaki ,  Tamotsu Takahashi ,  Shinichi Sato ,  Kazumasa Moriya ,  Ichiro Shinoda ,  Motohiko Itoh ,  Tomoyuki Kashiwazaki ,  Hiroaki Kawai ,  Mitsuo Watanabe

发明人： Yukio Yoshikawa ,  Takeshi Ishii ,  Yoshihiro Oyama ,  Tatsuo Sasaki ,  Tamotsu Takahashi ,  Shinichi Sato ,  Kazumasa Moriya ,  Ichiro Shinoda ,  Motohiko Itoh ,  Tomoyuki Kashiwazaki ,  Hiroaki Kawai ,  Mitsuo Watanabe

IPC分类号： G06K7/10 ,  H01S5/068 ,  H01S5/0683

CPC分类号： G06K7/10851 ,  H01S5/06825 ,  G06K2207/1018 ,  H01S5/06835

摘要： A semiconductor laser driving circuit has a semiconductor laser for emitting a laser beam according to a drive power. A photodetector is provided for effecting photo-electric conversion of the laser beam to output a corresponding electric signal. A monitoring circuit is connected for monitoring the electric signal to output a monitor signal indicative of variation in intensity of the laser beam. A controlling circuit is connected for comparing the monitor signal with a given reference signal to output a control signal according to difference therebetween. A powering circuit is operative according to the control signal to apply to the semiconductor laser a drive power effective to eliminate the difference. An abnormality detecting circuit is provided for comparing the monitor signal with a given limit signal which is set different from the reference signal to detect abnormality to output an abnormality signal.

公开(公告)号：US5854479A

公开(公告)日：1998-12-29

申请号：US980012

申请日：1997-11-26

申请人： Mitsuo Watanabe ,  Ichiro Shinoda ,  Shinichi Sato ,  Isao Iwaguchi ,  Hiroaki Kawai ,  Motohiko Itoh

发明人： Mitsuo Watanabe ,  Ichiro Shinoda ,  Shinichi Sato ,  Isao Iwaguchi ,  Hiroaki Kawai ,  Motohiko Itoh

IPC分类号： G06K7/14 ,  G06K7/10

CPC分类号： G06K7/1491 ,  G06K7/14 ,  G06K7/1443 ,  G06K7/1486

摘要： A bar-co reader and a bar-code reading method each of which can perform an accurate, quick reading operation. The bar-code reader scans a bar-code with electromagnetic radioactive rays and then extracts data regarding a bar-width thereof based on the reflected rays; demodulates the bar-width data and creates the demodulated data; judges the presence or absence of a bar-code reproducible combination in the demodulated data and judges. the type of combination when the reproducible combination exists; and synthesizes the demodulated data or the character forming the demodulated data according to the type of combination. The bar-code reader and bar-code reading method can be applicable to scanners such as POS systems used in supermarkets, distribution industries, and the like.

摘要翻译： 条形码读取器和条形码读取方法，每种读取方法都可以执行准确，快速的读取操作。 条形码阅读器用电磁放射线扫描条形码，然后根据反射光线提取有关其宽度的数据; 解调条宽数据并产生解调数据; 判断在解调的数据中是否存在条形码可重复组合并进行判断。 当可重复组合存在时的组合类型; 并且根据组合的类型来合成解调数据或形成解调数据的字符。 条形码读取器和条形码读取方法可以适用于诸如超市，配送行业等中使用的POS系统的扫描仪。