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公开(公告)号：US4448123A
公开(公告)日：1984-05-15
申请号：US394054
申请日：1982-06-30
申请人： Arthur E. Fleek , Samuel C. Tseng
发明人： Arthur E. Fleek , Samuel C. Tseng
摘要： A variable speed printing (VSP) adaptor for a dot matrix printer which includes a monitoring means having a plurality of devices each capable of assuming one of two states. The monitoring means monitors the state of the pattern data to be printed, and, in the preferred embodiment, the monitoring means comprises a counter which is preset with a number equal to the number of column scans with a dot print line. The pattern data to be printed is scanned in a forward direction, i.e., in the normal printing direction starting at the first print position and the count in the counter is decremented one count for each column data scanned. During the time interval between when this data is latched and the actual hammer actuation, the pattern data is scanned in the backward direction starting at the last print position. Each time the column data for a backward scan is zero, i.e., no dot to be printed, prior to sensing a non-zero column, the count in the counter is decremented one count. The printing operation continues in the interleaved forward/backward scans until the count in the counter reaches a reference level such as zero. Upon sensing this reference level in the counter, a control signal is generated which indicates that the printing of the dot row is complete and initiates movement of the paper to the next dot row position. In an alternate embodiment, the monitoring means comprises a random access storage device.
摘要翻译： 一种用于点阵式打印机的变速打印（VSP）适配器，其包括具有多个装置的监视装置，每个装置能够承担两种状态之一。 监视装置监视要打印的图案数据的状态，并且在优选实施例中，监视装置包括预设有与点打印行相等于列扫描数的计数器。 要打印的图案数据沿着从第一打印位置开始的正向扫描方向，即在从第一打印位置开始的正常打印方向上扫描，并且计数器中的计数对于扫描的每列数据减少一个计数。 在该数据被锁存和实际的锤击致动之间的时间间隔期间，从最后的打印位置开始沿着向后方向扫描图案数据。 每次反向扫描的列数据为零时，即不要打印的点，在感测非零列之前，计数器中的计数减1计数。 打印操作在交错的正向/反向扫描中继续进行，直到计数器中的计数达到诸如零的参考水平。 在计数器中感测到该参考电平时，产生指示点阵列的打印完成并且启动纸张到下一个点行位置的控制信号。 在替代实施例中，监视装置包括随机存取存储装置。
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公开(公告)号：US4596479A
公开(公告)日：1986-06-24
申请号：US734746
申请日：1985-05-15
摘要： The present invention relates to a dot matrix printer which makes use of multiple dot patterns distributed on the cylinder, belt, hand or drum of a line printer to provide an improved printing throughput for an all addressable line printer. In a dot-helix matrix printer, different arrangements of the dots are used which can be varied in position and spacing to increase printing speed. On a belt, band or drum line printer, multiple dot patterns are given a predetermined distribution. More specifically, arrangements of dots are used which provide enhanced performance due to the fact that they are determined by an analysis of the statistical occurrence of a particular dot pattern in a character set. The higher statistical probability dot patterns are used more often on the belt, band or drum.
摘要翻译： 点阵式打印机技术领域本发明涉及一种点阵式打印机，其利用分布在行式打印机的圆筒，皮带，手或滚筒上的多个点阵图案，为全可寻址的行式打印机提供改善的打印吞吐量。 在点螺旋矩阵打印机中，使用不同的点布置，其可以在位置和间距上变化以增加打印速度。 在皮带，乐队或鼓线打印机上，给予多个点图案预定的分布。 更具体地，使用点的布置，其由于通过对字符集中的特定点图案的统计发生的分析确定的事实来提供增强的性能。 较高的统计概率点图案更频繁地用于皮带，带或鼓上。
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公开(公告)号：US4286329A
公开(公告)日：1981-08-25
申请号：US104342
申请日：1979-12-17
申请人： Gerald Goertzel , Carl G. Powell , Samuel C. Tseng
发明人： Gerald Goertzel , Carl G. Powell , Samuel C. Tseng
CPC分类号： B41B19/01 , G06K15/10 , G09G5/246 , G06K2215/0028
摘要： A character compaction and generation method and apparatus which is particularly adapted to the generation of complex characters such as Kanji characters. A dot matrix defining a given character is compacted into a sparse matrix, with the original character being reconstructed for printing or display from the compacted character defined in the sparse matrix. Each character in the complex character set is compacted and stored in memory one time only, with decompaction being performed each time a given character is to be generated. A set of symbols are defined to represent different patterns which occur frequently in the entire complex character set. Different combinations of the symbols define a given character. The information stored for each sparse matrix representing a given character is comprised of each symbol in the sparse matrix, its position, and its size parameter if the symbol represents a family of patterns which differ only in size. Three groups of different patterns are defined which occur frequently in the complex character set, namely, a first group which has a fixed size for each pattern, a second group which has one size parameter which must be specified for each pattern, and a third group which has a plurality of size parameters which must be specified for each pattern.
摘要翻译： 一种字符压缩和生成方法和装置，其特别适用于生成诸如汉字字符的复杂字符。 定义给定字符的点矩阵被压缩成稀疏矩阵，其中原始字符被重构用于从稀疏矩阵中定义的压缩字符进行打印或显示。 复杂字符集中的每个字符都被压缩并存储在存储器中一次，每当要生成给定字符时执行解压缩。 一组符号被定义为表示在整个复杂字符集中频繁出现的不同模式。 符号的不同组合定义了一个给定的字符。 对于表示给定字符的每个稀疏矩阵存储的信息由稀疏矩阵，其位置及其大小参数中的每个符号组成，如果符号表示仅在尺寸上不同的模式族。 定义了在组合字符集中频繁出现的三组不同模式，即，对于每个模式具有固定大小的第一组，具有必须为每个模式指定的一个尺寸参数的第二组，以及第三组 其具有必须为每个模式指定的多个尺寸参数。
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公开(公告)号：US4876607A
公开(公告)日：1989-10-24
申请号：US364061
申请日：1982-03-31
申请人： Samuel C. Tseng
发明人： Samuel C. Tseng
CPC分类号： G09G5/246
摘要： A character compaction and generation method and apparatus which is particularly adapted to the compaction and generation of complex characters such as Kanji characters. Each character in a complex character set is defined by an I row and J column dot matrix, wherein each row is comprised of J bytes. Each successive row of a given character is scanned from the first through the Jth byte to determine if the current byte being scanned has the same numerical value as the immediately preceding or directly above byte in the scanning sequence. The number of successively read out sequence of bytes that have the same numerical value as the immediately preceding or directly above byte are coded as single symbols words Pn and Am, respectively, where n and m are integers which are indicative of the number of successive bytes scanned in sequence which are equal in numerical value to each immediately preceding or directly above byte. If a current byte being scanned is not of the same numerical value as the previous byte or the above byte, it is coded as a single symbol Sx, where x is an integer which is indicative of its numerical value. Each of the successively generated symbols Pn, Am and Sx for a given complex character are stored as a compacted complex representation thereof.
摘要翻译： 一种字符压缩和生成方法和装置，其特别适用于诸如汉字字符的复杂字符的压缩和生成。 复杂字符集中的每个字符由I行和J列点阵定义，其中每行由J字节组成。 给定字符的每个连续的行从第一个字节到第j个字节进行扫描，以确定正在被扫描的当前字节是否与扫描序列中紧邻的前一个或直接上面的字节具有相同的数值。 连续读出与前一个或直接上面字节相同数值的字节序列分别被编码为单符号字Pn和Am，其中n和m是指示连续字节数的整数 按顺序扫描，其数值与数字值相等，紧邻每个字节之前或之前。 如果正在扫描的当前字节与前一个字节或上述字节的数值不相同，则将其编码为单个符号Sx，其中x是表示其数值的整数。 针对给定复杂字符的连续生成的符号Pn，Am和Sx中的每一个被存储为其压缩的复合表示。
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公开(公告)号：US4573199A
公开(公告)日：1986-02-25
申请号：US608608
申请日：1984-05-09
申请人： Shu-Chun Chen , Samuel C. Tseng
发明人： Shu-Chun Chen , Samuel C. Tseng
CPC分类号： G09G5/246
摘要： A method of data compression which allows an enlarged font of complex characters to be produced by scaling from data representing a stored font of complex characters is disclosed. The scaling procedure involves the insertion of horizontal and vertical lines into the stored font to effect vertical and horizontal expansion, respectively, of the stored font. These lines are inserted so as to preserve the basic shape of the characters according to the following procedure. First, the dot matrix of each character is partitioned into sections, each containing a very pronounced and recognizable portion of the character. Then a decision is made in which sections to insert lines so that enlargement is attained without distorting the basic overall shape of the character. Next, a decision is made where in the sections the lines are to be inserted. Finally, a decision is made as to what the inserted lines are to look like. The results of these decisions are stored with data representing the stored font as side information so that an enlarged version of the font can be generated on the fly without need of arithmetic processing. A refinement of this basic technique additionally stores a sparse matrix containing the error of the generated matrix as compared with the original one. This additional information permits the generation of the exact duplicate of the original font.
摘要翻译： 公开了一种数据压缩方法，其允许通过从表示复杂字符的存储字体的数据缩放而产生复杂字符的放大字体。 缩放程序涉及将水平和垂直线插入到所存储的字体中以分别实现所存储字体的垂直和水平扩展。 插入这些线以便根据以下步骤保留字符的基本形状。 首先，每个字符的点矩阵被划分为各个部分，每个部分包含字符非常显着和可识别的部分。 然后作出决定，在哪些部分插入线条，以便在不扭曲字符的基本整体形状的情况下实现放大。 接下来，作出决定，在这些部分中将要插入线。 最后，决定插入的行是什么样的。 将这些决定的结果与表示存储的字体的数据一起存储为副信息，使得可以在不需要算术处理的情况下即时生成字体的放大版本。 这种基本技术的改进另外存储与原始矩阵相比较的包含生成矩阵的误差的稀疏矩阵。 此附加信息允许生成原始字体的确切副本。
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公开(公告)号：US4181973A
公开(公告)日：1980-01-01
申请号：US863976
申请日：1977-12-23
申请人： Samuel C. Tseng
发明人： Samuel C. Tseng
IPC分类号： B41J2/485 , B41B19/01 , B41B27/28 , G06K15/10 , G06K15/12 , G09G5/24 , G09G5/28 , H03M7/42 , G06F3/14 , G06F3/12 , G06K15/18
摘要： A character compaction and generation method and apparatus which is particularly adapted to the generation of complex characters such as Kanji characters. A dot matrix defining a given character is compacted into a sparse matrix, with the original character being reconstructed for printing or display from the compacted character defined in the sparse matrix. Each character in the complex character set is compacted and stored in memory one time only, with decompaction being performed each time a given character is to be generated. A set of symbols are defined to represent different patterns which occur frequently in the entire complex character set. Different combinations of the symbols define a given character. The information stored for each sparse matrix representing a given character is comprised of each symbol in the sparse matrix, its position, and its size parameter if the symbol represents a family of patterns which differ only in size.
摘要翻译： 一种字符压缩和生成方法和装置，其特别适用于生成诸如汉字字符的复杂字符。 定义给定字符的点矩阵被压缩成稀疏矩阵，其中原始字符被重构用于从稀疏矩阵中定义的压缩字符进行打印或显示。 复杂字符集中的每个字符都被压缩并存储在存储器中一次，每当要生成给定字符时执行解压缩。 一组符号被定义为表示在整个复杂字符集中频繁出现的不同模式。 符号的不同组合定义了一个给定的字符。 对于表示给定字符的每个稀疏矩阵存储的信息由稀疏矩阵，其位置及其大小参数中的每个符号组成，如果符号表示仅在尺寸上不同的模式族。
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