公开(公告)号：US6059187A

公开(公告)日：2000-05-09

申请号：US628109

申请日：1996-04-09

申请人： Shinichi Sato ,  Mitsuo Watanabe ,  Isao Iwaguchi ,  Ichiro Shinoda

发明人： Shinichi Sato ,  Mitsuo Watanabe ,  Isao Iwaguchi ,  Ichiro Shinoda

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

CPC分类号： G06K7/1486 ,  G06K7/14

摘要： Bar with count values indicating widths of white and black bars, which are reciprocally obtained, are input to buffers connected in series at 16 stages. The bar width count values written to those buffers are sequentially shifted each time a new bar width count value is input. A comparing circuit compares the widths of the adjacent bars in the same color with each other and checks whether or not a ratio therebetween falls within a range of 0.2-5.0 times as large as each other. Results of the comparisons by this comparing circuit are written to result registers connected in series at 13 stages. The check-results written to those result registers are sequentially shifted each time a new bar width count value is input. Accordingly, if all the check results written to all the result registers indicate an "in-range" state, it follows that the fifteen or more bars consecutively meet a bar code condition. Hence, the counter lets an AND gate open. If even one of the check results written to the result registers indicates an "out-of-range" state, the counter starts counting. Then, when a count result reaches 17, the counter lets the AND gate close. Therefore, just when one of the check results written to the result registers is in the "out-of-range" state, the bar width count value written to each buffer is output. The bar width count values input thereafter are disposed of.

摘要翻译： 具有表示白色和黑色条的宽度的计数值的条，其被相互获得输入到以16级串联连接的缓冲器。 每当输入新的条形宽度计数值时，写入这些缓冲器的条形宽度计数值被顺序地移位。 比较电路将相同颜色的相邻条的宽度彼此进行比较，并且检查它们之间的比率是否在彼此的0.2-5.0倍的范围内。 该比较电路的比较结果被写入到13个阶段串联连接的结果寄存器。 每当输入新的条形宽度计数值时，写入这些结果寄存器的检查结果顺序地移动。 因此，如果写入所有结果寄存器的所有检查结果表示“范围内”状态，则十五个或更多个条连续满足条形码条件。 因此，计数器使AND门打开。 如果写入结果寄存器的检查结果中的一个指示“超出范围”状态，则计数器开始计数。 然后，当计数结果达到17时，计数器使AND门关闭。 因此，当写入结果寄存器的检查结果之一处于“超出范围”状态时，输出写入每个缓冲区的条形宽度计数值。 然后处理其后输入的条宽计数值。

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：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：US06321987B1

公开(公告)日：2001-11-27

申请号：US09534155

申请日：2000-03-24

申请人： Mitsuo Watanabe ,  Shinichi Sato ,  Isao Iwaguchi ,  Ichiro Shinoda

发明人： Mitsuo Watanabe ,  Shinichi Sato ,  Isao Iwaguchi ,  Ichiro Shinoda

IPC分类号： G06K710

CPC分类号： G06K7/14

摘要： A demodulated data storage buffer is stored with bar width data sets obtained by scanning a coupon code with a scan optical system. A CPU first executes a demodulating process on these bar width data sets in accordance with a demodulation algorithm in a WPC code system. If an end guard bar (RGB) of the WPC code is contained in the demodulated data by the demodulating process, the demodulating process is executed on the same bar width data sets in accordance with a demodulation algorithm in a CODE 128 code system.

摘要翻译： 存储解调数据存储缓冲器，其中通过用扫描光学系统扫描优惠券代码而获得的条宽数据集。 CPU首先根据WPC代码系统中的解调算法对这些条宽数据集进行解调处理。 如果通过解调处理在解调数据中包含WPC码的结束保护条（RGB），则根据CODE 128码系统中的解调算法在相同的条宽数据集上执行解调处理。

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：US5798510A

公开(公告)日：1998-08-25

申请号：US654417

申请日：1996-05-28

申请人： Mitsuo Watanabe ,  Shinichi Sato ,  Isao Iwaguchi ,  Ichiro Shinoda

发明人： Mitsuo Watanabe ,  Shinichi Sato ,  Isao Iwaguchi ,  Ichiro Shinoda

IPC分类号： G06K7/10 ,  G06K7/14

CPC分类号： G06K7/1491 ,  G06K7/14 ,  G06K7/1465

摘要： A bar code recognizing/demodulating circuit compares with each other a demodulated data string including a start bar but excluding an end bar and a demodulated data string including the end bar but excluding the start bar among a variety of demodulated data strings obtained by a scan/convergence optical system scanning a bar code. A total sum of the numbers of digits of the two demodulated data strings is detected, and whether the total sum is larger than the number of digits of the bar code to be read is checked. If larger than the number of digits of the bar code, whether data of overlapped portions of the two demodulated data strings coincide with each other is checked. If coincident, demodulated data corresponding to the whole bar code are synthesized based on the two demodulated data strings.

摘要翻译： 条形码识别/解调电路将扫描/解调电路获得的各种解调数据串中的解调数据串彼此进行比较，该解调数据串包括起始条但不包括结束条和解调数据串， 会聚光学系统扫描条码。 检测两个解调数据串的数字的总和，并且检查总和是否大于待读取的条形码的位数。 如果大于条形码的位数，则检查两个解调数据串的重叠部分的数据是否彼此一致。 如果一致，则根据两个解调的数据串来合成对应于整个条形码的解调数据。

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：US5670771A

公开(公告)日：1997-09-23

申请号：US654676

申请日：1996-05-29

申请人： Mitsuo Watanabe ,  Shinichi Sato ,  Ichiro Shinoda

发明人： Mitsuo Watanabe ,  Shinichi Sato ,  Ichiro Shinoda

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

CPC分类号： G06K7/1486 ,  G06K7/14

摘要： A DMA controller DMA-transfers a bar width data set generated by a bar width counter to an external RAM. The DMA controller simultaneously DMA-transfers the bar width data set written in the external RAM to an internal RAM. An MPU reads the bar width data set written in the internal RAM at a high speed and demodulates the read bar width data set between the reading processes.

摘要翻译： DMA控制器DMA将由条宽计数器生成的条宽数据集传送到外部RAM。 DMA控制器同时将写入外部RAM的条宽数据集传输到内部RAM。 MPU以高速度读取写入内部RAM的条宽数据集，解调读取处理之间的读宽度数据集。