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    • 1. 发明授权
    • High speed scan bar code reader which can read more than one type of bar
code
    • 高速扫描条码阅读器,可读取多种类型的条形码
    • US5414252A
    • 1995-05-09
    • US833493
    • 1992-02-10
    • Ichiro ShinodaTomoyuki KashiwazakiAkira OkawadoKazumasa MoriyaShinichi SatoMotohiko ItohMitsuo WatanabeHiroaki Kawai
    • Ichiro ShinodaTomoyuki KashiwazakiAkira OkawadoKazumasa MoriyaShinichi SatoMotohiko ItohMitsuo WatanabeHiroaki Kawai
    • G06K7/14G06K7/10
    • G06K7/1491G06K7/14G06K7/1486
    • 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.
    • 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。
    • 4. 发明授权
    • Method of and apparatus for demodulating bar code
    • 用于解码条形码的方法和装置
    • US5502296A
    • 1996-03-26
    • US310045
    • 1994-09-21
    • Hiroaki KawaiMitsuo WatanabeShinichi SatoIchiro ShinodaMotohiko Itoh
    • Hiroaki KawaiMitsuo WatanabeShinichi SatoIchiro ShinodaMotohiko Itoh
    • G06K7/00G06K7/10G06K7/14
    • G06K7/10851G06K7/14G06K7/1486
    • 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.
    • 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。
    • 10. 发明授权
    • Bar code reader and bar code reading method
    • 条码阅读器和条码阅读方法
    • US6032862A
    • 2000-03-07
    • US69946
    • 1998-04-30
    • Mitsuo WatanabeMotohiko ItohHiroaki KawaiIsao IwaguchiShinichi Sato
    • Mitsuo WatanabeMotohiko ItohHiroaki KawaiIsao IwaguchiShinichi Sato
    • G06K7/00G06K7/10G06K7/14
    • G06K7/1473G06K7/14
    • 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.
    • 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。