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1. 发明授权

US5646617A Data compressing method, data restoring method, and information processing apparatus 失效
标题翻译：数据压缩方法，数据恢复方法和信息处理装置
公开(公告)号：US5646617A
公开(公告)日：1997-07-08
申请号：US362019
申请日：1994-12-22
申请人： Ryuji Ohmoto , Hikonosuke Uwai
发明人： Ryuji Ohmoto , Hikonosuke Uwai
IPC分类号： G06T9/00 , H03M7/30
CPC分类号： G06T9/005 , H03M7/3088
摘要： The present invention offers a system which operates with reference to a dictionary for registering a registered data string as correlated to a registration number and for performing a data compressing process by replacing a combination consisting of two or more character strings with a registration number mentioned above. The system according to the present invention performs the compilation and updating of the dictionary at the Step A1 and A2, respectively, and judges at the Step A3 whether or not the dictionary has become the optimum dictionary. The system performs the updating of the dictionary in such a case by an incremental decomposition method, or an augmentative decomposition method, or the like. Then, as shown for the Steps A4 and A5, the system compiles the optimum dictionary, at which stage the system puts out the dictionary as the ultimate static dictionary for its use for data restoration and also performs a data compressing process with reference to the above-mentioned static dictionary, putting out the compressed data as the ultimate compressed data to be used for data restoration.
摘要翻译：本发明提供了一种系统，其参考用于登记与注册号相关联的注册数据串的字典，并且通过将由两个或更多个字符串组成的组合替换为上述注册号进行数据压缩处理。根据本发明的系统分别在步骤A1和A2执行字典的编译和更新，并且在步骤A3判断字典是否已经成为最佳字典。在这种情况下，系统通过增量分解方法或增强分解方法等来执行字典的更新。然后，如步骤A4和A5所示，系统编译最佳字典，在该阶段系统将字典作为最终的静态字典进行数据恢复，并参照上述进行数据压缩处理提出的静态字典，将压缩数据作为用于数据恢复的最终压缩数据。

2. 发明授权

US5537515A Method and apparatus for generating bit map image data 失效
标题翻译：用于产生位图图像数据的方法和装置
公开(公告)号：US5537515A
公开(公告)日：1996-07-16
申请号：US87117
申请日：1993-07-07
申请人： Shoji Yokoyama , Atsushi Uchino , Ryuji Ohmoto
发明人： Shoji Yokoyama , Atsushi Uchino , Ryuji Ohmoto
IPC分类号： G06K15/12 , G06K15/00
CPC分类号： G06K15/128
摘要： Bit map data stored in an image memory is read every one column by N lines or M columns by one line and is stored in a shift register of M bits by N bits. The data in the shift register is differentiated in the direction of the column direction by edge detectors and extracted as data representing only a contour portion. This contour data is classified into forms of discontinuous points with respect to the horizontal direction and the vertical direction by classifying circuits. As for the classified data, the size of a dot to be printed and a printing position are converted by a determining circuit to a pulse width and a timing at which the dot is to be generated, and the classified data is converted to a pulse width by a pulse-width modulating circuit and is outputted to a laser beam modulating device. As a result, a dot smaller than a normal dot is added in a vacant portion, or a part of a normal dot is shaved, thereby printing a smooth pattern.
摘要翻译：存储在图像存储器中的位图数据每一列由N行或M列逐行读取，并以M位的移位寄存器N位存储。移位寄存器中的数据沿边缘检测器在列方向的方向上不同，并且作为仅表示轮廓部分的数据提取。该轮廓数据通过对电路进行分类而分为相对于水平方向和垂直方向的不连续点的形式。对于分类数据，要打印的点的大小和打印位置由确定电路转换为脉冲宽度和要生成点的定时，并且将分类数据转换为脉冲宽度通过脉宽调制电路输出到激光束调制装置。结果，在空白部分中添加小于普通点的点，或者削减正常点的一部分，从而印刷平滑图案。

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