Recording method and decoding method for digital information using
modulation patterns
    2.
    发明授权
    Recording method and decoding method for digital information using modulation patterns 失效
    使用调制模式的数字信息的记录方法和解码方法

    公开(公告)号:US5745589A

    公开(公告)日:1998-04-28

    申请号:US612303

    申请日:1996-03-07

    CPC分类号: G06K19/06037

    摘要: A small block having a particular configuration that fills up an information recording area without clearances is set. The small block made up by giving marks of different values to cells arrayed in a direction of at least one row and column is selected as a modulation block. A primary pattern corresponding to recording-object information is extracted in the units of small blocks, the extracted patterns are associated with the modulation pattern in the units of cells in one-to-one correspondence, and their exclusive-ORs are calculated respectively. A secondary pattern is recorded by a process that small blocks composed of marks representing the values of the exclusive-ORs are arrayed in the units in order in the information recording area.

    摘要翻译: 设置具有填充没有间隙的信息记录区域的特定配置的小块。 选择通过向至少一行和多列的方向排列的单元赋予不同值的标记来构成的小块作为调制块。 以小块为单位提取与记录对象信息对应的主要图案,所提取的图案以单元对应的单位的调制图案相关联,并且分别计算其异或。 通过由信息记录区域中的顺序排列由表示异或的值的标记构成的小块的处理来记录辅助图案。

    Digital information decoding method having a re-reading step
    3.
    发明授权
    Digital information decoding method having a re-reading step 失效
    具有再读取步骤的数字信息解码方法

    公开(公告)号:US5740286A

    公开(公告)日:1998-04-14

    申请号:US612309

    申请日:1996-03-07

    申请人: Masahiro Esashi

    发明人: Masahiro Esashi

    摘要: Provided is a digital information decoding method capable of speedily and surely reading digital information recorded as a two-dimensional pattern by giving a mark to each of matrix meshes set virtually. The two-dimensional pattern is converted into image data composed of image bits. A center position of each mesh is calculated, and a value of the image bit in the calculated center position is read as a value of the mesh. If there is a read error, at least one of first through third analyzing methods is executed to perform re-reading. According to the first analyzing method, the position to be examined is shifted by a specified amount from the center position in the mesh. According to the second analyzing method, a sum of weighted values of the image bits included in the mesh is calculated and compared with a specified threshold value. According to the third analyzing method, based on a distance between a boundary of the mesh being examined and its calculated center position, the calculated center position of the adjacent mesh is corrected to coincide with a true center position of the adjacent mesh.

    摘要翻译: 提供了一种数字信息解码方法,其能够通过对虚拟地设置的矩阵网格中的每一个赋予标记来快速且可靠地读取记录为二维图案的数字信息。 将二维图案转换成由图像位组成的图像数据。 计算每个网格的中心位置,并且将计算的中心位置中的图像比特的值读取为网格的值。 如果存在读取错误,则执行第一至第三分析方法中的至少一个以执行重新读取。 根据第一分析方法,将被检查的位置从网格的中心位置偏移指定的量。 根据第二分析方法,计算包含在网格中的图像比特的加权值之和,并将其与指定的阈值进行比较。 根据第三分析方法,基于被检查的网格的边界与其计算的中心位置之间的距离,相邻网格的计算的中心位置被校正为与相邻网格的真实中心位置一致。

    Recording method, decoding method, and decoding apparatus for digital
information
    4.
    发明授权
    Recording method, decoding method, and decoding apparatus for digital information 失效
    用于数字信息的记录方法,解码方法和解码装置

    公开(公告)号:US5686718A

    公开(公告)日:1997-11-11

    申请号:US616446

    申请日:1996-03-15

    CPC分类号: G06K19/06037 Y10S235/90

    摘要: There is provided a method for recording digital information that, when digital information is recorded as a two-dimensional pattern on a planar recording surface, the digital information can be easily coded and decoded. A specific pattern for representing a location within the recording surface is made up by giving marks in a specified pattern to a plurality of meshes which are adjoined to one another into a specific shape. A rectangular block is composed of a plurality of meshes adjoined to one another longitudinally and transversely into a rectangular shape and has longitudinal and transverse dimensions larger than those of the specific pattern. A segment in which the specific patterns are overlaid in the units of meshes or circumscribed to the rectangular block is set. An information recording area for expressing the two-dimensional pattern is composed by arraying a plurality of the segments without clearances on the recording surface. The digital information to be recorded is divided according to the number of the segments and then resulting pieces of unitary information are recorded into the segments.

    摘要翻译: 提供了一种用于记录数字信息的方法,当数字信息在平面记录表面上被记录为二维图案时,可以容易地对数字信息进行编码和解码。 用于表示记录表面内的位置的特定图案是通过以指定图案向彼此相邻的多个网格赋予特定的形状来构成的。 矩形块由纵向和横向彼此相邻的多个网格构成,并且具有比特定图案的纵向和横向尺寸更大的纵向和横向尺寸。 将特定图案以网格单元重叠或外切到矩形块的段设置。 用于表示二维图案的信息记录区域是通过在记录表面上排列多个片段而没有间隙而组成的。 要记录的数字信息根据段的数量被划分,然后将所得到的单个信息片段记录到段中。