公开(公告)号：US6095420A

公开(公告)日：2000-08-01

申请号：US771254

申请日：1996-12-20

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

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

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

CPC分类号： G06K7/1465 ,  G06K7/14 ,  G06K7/1486

摘要： A bar code reader decodes a bar code in different directions if the bar code contains special characters whose bar widths have been corrected. The bar code reader compares the decoded results in the different directions with each other, to improve the bar code reading reliability. If the decoded results agree with each other, the results are accepted, and if not, they are discarded.

摘要翻译： 如果条形码包含已经更正了条宽的特殊字符，则条形码阅读器将解码不同方向的条形码。 条形码读取器将不同方向的解码结果彼此进行比较，以提高条形码读取的可靠性。 如果解码结果彼此一致，则结果被接受，如果不是，则将被丢弃。

公开(公告)号：US6032862A

公开(公告)日：2000-03-07

申请号：US69946

申请日：1998-04-30

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

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

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

CPC分类号： G06K7/1473 ,  G06K7/14

摘要： The present invention introduce a bar code reader capable of inferring data coded into one character failing in demodulation when one character can not be demodulated. The CPU demodulates the data obtained by reading bar code for each data character. Concerning the data character failing in demodulation, bar width data for four bars before demodulation is stored in the temporary saving buffer. When 11 data characters are successful in demodulation, the CPU calculates back the modulus 10 check based on the demodulated data corresponding to 11 data characters, and infers a value of the demodulated data corresponding to the data character failing in demodulation. The CPU, when the data character failing in demodulation is contained in the left data block, infers an ODD/EVEN configuration of the demodulated data corresponding to the data character failing in demodulation based on five pieces of demodulated data corresponding to data characters successful in demodulation in the left data block.

摘要翻译： 本发明引入一种条形码阅读器，当一个字符不能被解调时，能够将编码成一个字符的解码失败的数据推断出来。 CPU解调通过读取每个数据字符的条形码获得的数据。 关于解调中的数据字符失败，解调之前的四个条的条宽数据被存储在临时保存缓冲器中。 当11个数据字符解调成功时，CPU根据与11个数据字符相对应的解调数据，计算出10次模数，并推断与数据字符对应的数据字符解调失败的值。 当解调中的数据字符包含在左数据块中时，CPU根据对应于在解调中成功的数据字符的五个解调数据来推测与解调中的数据字符相对应的解调数据的ODD / EVEN配置 在左数据块中。

公开(公告)号：US6006992A

公开(公告)日：1999-12-28

申请号：US45899

申请日：1998-03-23

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

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

IPC分类号： G06K7/00 ,  G06K7/10

CPC分类号： G06K7/10

摘要： A CPU deals, as valid data, with demodulated data obtained by synthesizing demodulated data obtained by reading a first data block of an upper stage with demodulated data obtained by reading a second data block of the upper stage, and demodulated data obtained by synthesizing demodulated data obtained by reading a first data block of a lower stage with demodulated data obtained by reading a second data block of the lower stage, as far as both of the demodulated data obtained by reading the first data block of the upper stage of two column codes structured by arranging WPC codes up and down at two columns and the demodulated data obtained by reading the first data block of the lower stage, contain a portion corresponding to data characters of the second data block, and as far as these sets of demodulated data are different from each other.

摘要翻译： 通过合成通过读取上级的第一数据块获得的解调数据而获得的解调数据获得的解调数据，以及通过合成解调数据获得的解调数据，作为有效数据， 通过读取下级的第二数据块获得的解调数据读取下级的第一数据块，只要通过读取两列列码的上级的第一数据块获得的两个解调数据结构化 通过在两列上下配置WPC代码，并且通过读取下级的第一数据块而获得的解调数据包含对应于第二数据块的数据字符的部分，并且只要这些解调数据组不同 从彼此。

公开(公告)号：US06206286B1

公开(公告)日：2001-03-27

申请号：US09046582

申请日：1998-03-24

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

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

IPC分类号： G06K710

CPC分类号： G06K7/1465 ,  G06K7/14

摘要： A double-reading preventive control processing unit, when demodulated data corresponding to a whole bar code is obtained in an M10-OK buffer, notifies a reading-OK processing unit of this demodulated data on condition that a double-reading preventive timer is not actuated, stores a single-reading multi-stage buffer with this demodulated data, and actuates the double-reading preventive timer. The single-reading multi-stage buffer is capable of storing plural demodulated data in sequence from the latest one, of which the reading-OK processing unit has been notified. When demodulated data is newly obtained before the double-reading preventive timer makes a time-up, the double-reading preventive control unit checks whether or not the new demodulated data is identical with the demodulated data stored in the single-reading multi-stage buffer. When identical, this new piece of demodulated data is discarded. Whereas when not identical, the reading-OK processing unit is notified of this new demodulated data, and the single-reading multi-stage buffer is stored with the same data. The double-reading preventive timer is then re-started.

摘要翻译： 双读预防控制处理单元，当在M10-OK缓冲器中获得对应于整个条形码的解调数据时，在双读预防计时器未被致动的条件下通知读取OK处理单元该解调数据 存储具有该解调数据的单读多级缓冲器，并且启动双读预防定时器。 单读多级缓冲器能够从最新的多级缓冲器存储多个解调数据，其中已经通知了读 - OK处理单元。 当双读预防定时器在时间上升之前新获得解调数据时，双重读取预防控制单元检查新解调数据是否与存储在单阅读多级缓冲器中的解调数据相同 。 当相同时，这个新的解调数据被丢弃。 而当不相同时，通知读取OK处理单元该新的解调数据，并且使用相同的数据存储单阅读多级缓冲器。 然后重新启动双重预防计时器。

公开(公告)号：US6070801A

公开(公告)日：2000-06-06

申请号：US46577

申请日：1998-03-24

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

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

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

CPC分类号： G06K7/14

摘要： Demodulated data B containing the whole of a right block and a part of a left block is obtained after demodulated data A containing a start guard bar and based on a division reading process has been at first obtained. When demodulated data C containing an end guard bar and numerical data of three characters is thereafter obtained, a CPU aligns the demodulated data C with modulus 10-OK data obtained by synthesizing the demodulated data A with the demodulated data B on the basis of the end guard bar, and compares tenth through twelfth characters (of the numerical data) of both of data with each other. As a result of this comparison, if the tenth through twelfth characters (of the numerical data) of both of data are coincident with each other, the CPU increments an identical character counter.

摘要翻译： 在包含开始保护条并基于分割读取处理的解调数据A已经被首先获得之后，获得包含整个右块和左块的一部分的解调数据B. 当得到包含末端保护条的解调数据C和三个字符的数字数据时，CPU将解调数据C与基于结束的解调数据B合成解调数据A而获得的模数10-OK数据对齐 保护条，并将两个数据的第十到十二个字符（数字数据）相互比较。 作为这种比较的结果，如果两个数据的十到十二个字符（数字数据）彼此一致，则CPU增加相同的字符计数器。

公开(公告)号：US5629511A

公开(公告)日：1997-05-13

申请号：US392117

申请日：1995-02-22

申请人： Isao Iwaguchi ,  Shinichi Sato ,  Ichiro Shinoda

发明人： Isao Iwaguchi ,  Shinichi Sato ,  Ichiro Shinoda

IPC分类号： G06K7/00 ,  G06K7/10

CPC分类号： G06K7/10851

摘要： A bar code scanner includes a detection unit for detecting light reflected from a bar code and generating a detection signal, a conversion unit for generating detected bar code data based on the detection signal, an input interface unit receiving external bar code data generated externally, a data control unit for generating output bar code data by using the detected bar code data and/or the external bar code data from the input interface unit, and an output interface unit for sending out the output bar code data.

摘要翻译： 条形码扫描器包括：检测单元，用于检测从条形码反射的光并产生检测信号;转换单元，用于根据检测信号产生检测到的条形码数据;输入接口单元，接收外部产生的外部条形码数据; 数据控制单元，用于通过使用检测到的条形码数据和/或来自输入接口单元的外部条形码数据产生输出条形码数据;以及输出接口单元，用于发出输出条形码数据。

公开(公告)号：US5511087A

公开(公告)日：1996-04-23

申请号：US113109

申请日：1993-08-30

申请人： Shinichi Sato ,  Munenori Ohtsuki ,  Isao Iwaguchi ,  Ichiro Shinoda

发明人： Shinichi Sato ,  Munenori Ohtsuki ,  Isao Iwaguchi ,  Ichiro Shinoda

IPC分类号： G06K7/10 ,  G06K1/12 ,  H01S5/024 ,  H01S5/042 ,  H01S5/0683 ,  H01S3/10

CPC分类号： H01S5/06832 ,  G06K1/126 ,  H01S2301/02 ,  H01S5/0427

摘要： The present invention relates to a semiconductor laser control method used preferably for a reading control system such as a bar code reading device and to a semiconductor laser control device employing the above method. The object of the invention is to provide a semiconductor laser control device which can be controlled based on the output of a semiconductor laser, provides a stable laser output in a noise environment, enables easy output adjustment, and is immune to external thermal or electrical noises. In the semiconductor laser control method where the light amount of a light amount to current controllable semiconductor laser is subjected to a feedback control with a predetermined time constant while it is monitored, when the light amount is less than a predetermined value, the semiconductor laser is subjected to an feedback control with a first time constant. When the light amount is more than a predetermined value, the semiconductor laser is subjected to a feedback control with a second time constant.

摘要翻译： 本发明涉及一种半导体激光器控制方法，其优选用于诸如条形码读取装置的读取控制系统和采用上述方法的半导体激光器控制装置。 本发明的目的是提供一种半导体激光器控制装置，其可以基于半导体激光器的输出进行控制，在噪声环境中提供稳定的激光输出，能够容易地进行输出调节，并且免受外部热或电噪声 。 在对当前可控半导体激光器的光量的光量在监视时以预定时间常数进行反馈控制的半导体激光器控制方法中，当光量小于预定值时，半导体激光器 经受第一时间常数的反馈控制。 当光量大于预定值时，对半导体激光器进行第二时间常数的反馈控制。

公开(公告)号：US5778017A

公开(公告)日：1998-07-07

申请号：US936185

申请日：1997-09-17

申请人： Shinichi Sato ,  Munenori Ohtsuki ,  Isao Iwaguchi ,  Ichiro Shinoda

发明人： Shinichi Sato ,  Munenori Ohtsuki ,  Isao Iwaguchi ,  Ichiro Shinoda

IPC分类号： G06K7/10 ,  G06K1/12 ,  H01S5/024 ,  H01S5/042 ,  H01S5/0683 ,  H01S3/10

CPC分类号： H01S5/06832 ,  G06K1/126 ,  H01S2301/02 ,  H01S5/0427

摘要： The present invention relates to a semiconductor laser control method used preferably for a reading control system such as a bar code reading device and to a semiconductor laser control device employing the above method. The object of the invention is to provide a semiconductor laser control device which can be controlled based on the output of a semiconductor laser, provides a stable laser output in a noise environment, enables easy output adjustment, and is immune to external thermal or electrical noises. In the semiconductor laser control method where the light amount of a light amount to current controllable semiconductor laser is subjected to a feedback control with a predetermined time constant while it is monitored, when the light amount is less than a predetermined value, the semiconductor laser is subjected to an feedback control with a first time constant. When the light amount is more than a predetermined value, the semiconductor laser is subjected to a feedback control with a second time constant.

摘要翻译： 本发明涉及一种半导体激光器控制方法，其优选用于诸如条形码读取装置的读取控制系统和采用上述方法的半导体激光器控制装置。 本发明的目的是提供一种半导体激光器控制装置，其可以基于半导体激光器的输出进行控制，在噪声环境中提供稳定的激光输出，能够容易地进行输出调节，并且免受外部热或电噪声 。 在对当前可控半导体激光器的光量的光量在监视时以预定时间常数进行反馈控制的半导体激光器控制方法中，当光量小于预定值时，半导体激光器 经受第一时间常数的反馈控制。 当光量大于预定值时，对半导体激光器进行第二时间常数的反馈控制。

公开(公告)号：US5932861A

公开(公告)日：1999-08-03

申请号：US550839

申请日：1995-10-31

申请人： Isao Iwaguchi ,  Shinichi Sato ,  Ichiro Shinoda

发明人： Isao Iwaguchi ,  Shinichi Sato ,  Ichiro Shinoda

IPC分类号： G06K7/10

CPC分类号： G06K7/10584

摘要： The present invention relates to an ambient light detector that detects a change in light amount of ambient light. The ambient light detector consists of ambient light detecting means for detecting light entering from circumferences and outputting an electrical signal corresponding to the light amount thereof; amplifying means for amplifying the output from the ambient light detecting means; signal producing means for producing a slice level signal based on the output from the amplifying means; comparing means for comparing the output of the amplifying means with the slice level signal; and judging means for judging the level of the output from the amplifying means and then outputting a control signal to control the amplifying factor of the amplifying means, according to the judging result. Ambient light can be stably detected without depending on installation mode or external environment.

摘要翻译： 本发明涉及一种检测环境光的光量变化的环境光检测器。 环境光检测器由环境光检测装置组成，用于检测从周边进入的光并输出对应于其光量的电信号; 用于放大来自环境光检测装置的输出的放大装置; 信号产生装置，用于根据放大装置的输出产生限幅电平信号; 比较装置，用于将放大装置的输出与限幅电平信号进行比较; 以及判断装置，用于根据判断结果判断放大装置的输出电平，然后输出控制信号以控制放大装置的放大系数。 可以稳定地检测环境光，而不依赖于安装模式或外部环境。

公开(公告)号：US5636233A

公开(公告)日：1997-06-03

申请号：US458193

申请日：1995-06-02

申请人： Shinichi Sato ,  Munenori Ohtsuki ,  Isao Iwaguchi ,  Ichiro Shinoda

发明人： Shinichi Sato ,  Munenori Ohtsuki ,  Isao Iwaguchi ,  Ichiro Shinoda

IPC分类号： G06K7/10 ,  G06K1/12 ,  H01S5/024 ,  H01S5/042 ,  H01S5/0683 ,  H01S3/13

CPC分类号： H01S5/06832 ,  G06K1/126 ,  H01S2301/02 ,  H01S5/0427

摘要： The present invention relates to a semiconductor laser control method used preferably for a reading control system such as a bar code reading device and to a semiconductor laser control device employing the above method. The object of the invention is to provide a semiconductor laser control device which can be controlled based on the output of a semiconductor laser, provides a stable laser output in a noise environment, enables easy output adjustment, and is immune to external thermal or electrical noises. In the semiconductor laser control method where the light amount of a light amount to current controllable semiconductor laser is subjected to a feedback control with a predetermined time constant while it is monitored, when the light amount is less than a predetermined value, the semiconductor laser is subjected to an feedback control with a first time constant. When the light amount is more than a predetermined value, the semiconductor laser is subjected to a feedback control with a second time constant.

摘要翻译： 本发明涉及一种半导体激光器控制方法，其优选用于诸如条形码读取装置的读取控制系统和采用上述方法的半导体激光器控制装置。 本发明的目的是提供一种半导体激光器控制装置，其可以基于半导体激光器的输出进行控制，在噪声环境中提供稳定的激光输出，能够容易地进行输出调节，并且免受外部热或电噪声 。 在对当前可控半导体激光器的光量的光量在监视时以预定时间常数进行反馈控制的半导体激光器控制方法中，当光量小于预定值时，半导体激光器 经受第一时间常数的反馈控制。 当光量大于预定值时，对半导体激光器进行第二时间常数的反馈控制。