公开(公告)号：US20100271414A1

公开(公告)日：2010-10-28

申请号：US12763946

申请日：2010-04-20

申请人： Shunichi Kaizu ,  Hisashi Ishikawa

发明人： Shunichi Kaizu ,  Hisashi Ishikawa

IPC分类号： B41J29/38

CPC分类号： B41J29/38 ,  B41J2/2139 ,  B41J11/0065

摘要： An image forming apparatus includes a print head provided with a plurality of discharge ports, a scanning unit configured to cause the print head to scan the same printing region on a recording medium a number of times, a generation unit configured to generate image forming data for each of scans, based on image information that has been input, and an image forming unit configured to perform image forming by discharging inks from the discharge ports on the recording medium according to the image forming data generated by the generation unit. The generation unit includes a division unit configured to divide the image information, while controlling division coefficients, using each of the discharge ports as the reference based on the division coefficients, and a quantization unit configured to quantize each of image information divided by the division unit.

摘要翻译： 图像形成装置包括具有多个排出口的打印头，被配置为使得打印头在记录介质上多次扫描相同的打印区域的扫描单元，被配置为生成图像形成数据的生成单元 基于已经输入的图像信息的每个扫描，以及图像形成单元，被配置为根据由生成单元生成的图像形成数据，从记录介质上的排出口排出墨水来执行图像形成。 生成单元包括分割单元，被配置为基于分割系数以每个排出端口作为基准来分配图像信息，并且将量化单元配置为量化由分割单元划分的每个图像信息 。

公开(公告)号：US20100007901A1

公开(公告)日：2010-01-14

申请号：US12498681

申请日：2009-07-07

申请人： Hiroyuki Horii ,  Hisashi Ishikawa

发明人： Hiroyuki Horii ,  Hisashi Ishikawa

IPC分类号： H04N1/60 ,  B41J29/38

CPC分类号： H04N1/506 ,  G06K15/105 ,  H04N1/4015 ,  H04N1/603

摘要： An image forming apparatus includes a color converting unit 330 for subjecting the input image data to a color conversion in accordance with ink color and generating a print image 400; a print data generator 370-x for generating print data of each scan corresponding to multiple scans of the print image generated by the color converting unit 330; print controller 380-x for controlling at least one of the color converting unit 330 or print data generator 370-x based upon the input image data 320 or a position on a scanning line of each dot to be printed in the print image 400 generated by the color converting unit 330; and a printer engine 180 for printing on the print medium based upon the print data generated by the print data generator 370-x.

摘要翻译： 图像形成装置包括颜色转换单元330，用于根据墨水颜色对输入的图像数据进行颜色转换并产生打印图像400; 打印数据生成器370-x，用于生成与由颜色转换单元330生成的打印图像的多次扫描对应的每个扫描的打印数据; 打印控制器380-x，用于基于输入图像数据320或打印在打印图像400中的每个点的扫描线上的位置来控制颜色转换单元330或打印数据生成器370-x中的至少一个， 颜色转换单元330; 以及打印机引擎180，用于基于由打印数据生成器370-x生成的打印数据在打印介质上进行打印。

公开(公告)号：US20090167803A1

公开(公告)日：2009-07-02

申请号：US12323296

申请日：2008-11-25

申请人： Tetsuo Uchiyama ,  Hisashi Ishikawa

发明人： Tetsuo Uchiyama ,  Hisashi Ishikawa

IPC分类号： B41J2/205

CPC分类号： B41J2/2052

摘要： An image forming apparatus which forms a halftone image on a print medium by using a multipass process to scan a printhead N (N is an integer of 2 or more) times in a single area on the print medium and form dots by each scan operation includes a pass division unit which sets the print density of a scan operation in the first pass so as to prevent dots from overlapping with each other on the print medium, and sets the print densities of scan operations in the second to Nth passes, a tone reduction unit which generates print data of the respective scan operations in accordance with the print densities set by the pass division unit, and a printhead which prints a halftone image on a print medium on the basis of the print data generated by the tone reduction unit.

摘要翻译： 一种图像形成装置，其通过使用多次处理在打印介质上在打印介质上的单个区域中扫描打印头N（N为2以上的整数）次而在打印介质上形成半色调图像，并且通过每次扫描操作形成点， 通过分割单元，其在第一遍中设置扫描操作的打印浓度，以防止点在打印介质上彼此重叠，并且将扫描操作的打印浓度设置在第二到第N遍，色调降低 根据由通过分割单元设置的打印浓度生成各扫描操作的打印数据的打印单元，以及基于由色调降低单元产生的打印数据在打印介质上打印半色调图像的打印头。

公开(公告)号：US20090080786A1

公开(公告)日：2009-03-26

申请号：US12196624

申请日：2008-08-22

申请人： Takayuki Tsutsumi ,  Hisashi Ishikawa

发明人： Takayuki Tsutsumi ,  Hisashi Ishikawa

IPC分类号： G06K9/46

CPC分类号： H04N1/642

摘要： This invention encodes an image mixed of a character or line-drawing image and a natural image. An extraction unit extracts the color of a pixel, which constitutes a high-frequency component, from the input image data as an extracted color and generates identification information indicating whether each pixel in the image data is a pixel of an extracted color or non-extracted color. A replacement unit replaces a pixel value of an extracted color with an average value of non-extracted colors. Using a window having a size of 2×2 pixels, a reducing unit generates one pixel from the window after replacement. If even one non-extracted-color pixel exists in the window, the average value of non-extracted colors within the window is determined to be a pixel value of the reduced image. A packing unit concatenates the extracted color, the result of lossless-encoded identification information and lossy-encoded data of the reduced image.

摘要翻译： 本发明对由字符或绘图图像和自然图像混合的图像进行编码。 提取单元从输入图像数据中提取构成高频分量的像素的颜色作为提取的颜色，并且生成指示图像数据中的每个像素是提取颜色的像素还是未提取的像素的识别信息 颜色。 替换单元用未提取的颜色的平均值替换提取的颜色的像素值。 使用尺寸为2×2像素的窗口，缩小单元在更换之后从窗口生成一个像素。 如果在窗口中存在一个非提取颜色像素，则窗口内未提取的颜色的平均值被确定为缩小图像的像素值。 打包单元连接提取的颜色，无损编码的识别信息的结果和缩小图像的有损编码数据。

公开(公告)号：US20090060390A1

公开(公告)日：2009-03-05

申请号：US12189862

申请日：2008-08-12

申请人： Yuji Hara ,  Hisashi Ishikawa

发明人： Yuji Hara ,  Hisashi Ishikawa

IPC分类号： G06K9/54

CPC分类号： G06T1/20

摘要： An image processing apparatus has a plurality of serially connected image processing blocks for sequentially processing image data input thereto. After a first command for controlling the plurality of image processing blocks and image data to be processed by the plurality of image processing blocks are output to the leading image processing block, a second command indicating end of this output is output to the leading image processing block. When the second command is output from a final image processing block, the next first command and image data are output to the leading image processing block.

摘要翻译： 图像处理装置具有多个串行连接的图像处理块，用于顺序地处理输入到其上的图像数据。 在用于控制多个图像处理块的第一命令和由多个图像处理块处理的图像数据被输出到前导图像处理块之后，将表示该输出的结束的第二命令输出到前导图像处理块 。 当从最终图像处理块输出第二命令时，将下一个第一命令和图像数据输出到前导图像处理块。

公开(公告)号：US20080292197A1

公开(公告)日：2008-11-27

申请号：US12107844

申请日：2008-04-23

申请人： Akio Nakagawa ,  Hisashi Ishikawa ,  Ryoko Mise

发明人： Akio Nakagawa ,  Hisashi Ishikawa ,  Ryoko Mise

IPC分类号： G06K9/36

CPC分类号： H04N19/93 ,  H04N19/102 ,  H04N19/105 ,  H04N19/12 ,  H04N19/146 ,  H04N19/17 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/593 ,  H04N19/60

摘要： According to this invention, encoded data are generated by sorting pixel data in a block according to different scan start positions and different scan routes upon generating encoded data for respective blocks, and encoded data with a smallest data amount of these encoded data is outputted. To this end, a block generation unit inputs blocks each defined by 8×8 pixels from image data to be encoded. Four encoding processing units respectively sort inputted 8×8 pixels according to the information stored in scan start position information storage units and scan route information storage units. The respective encoding processing units generate encoded data based on the sorted pixel data. A selector selects and outputs encoded data with a smallest data size from those generated by the encoding processing units.

摘要翻译： 根据本发明，通过根据不同的扫描开始位置和不同的扫描路径对块中的像素数据进行排序，生成编码数据，生成各个块的编码数据，并输出这些编码数据的最小数据量的编码数据。 为此，块生成单元从要编码的图像数据输入由8×8像素定义的块。 四个编码处理单元根据存储在扫描开始位置信息存储单元和扫描路径信息存储单元中的信息分别输入8×8像素。 相应的编码处理单元基于分类的像素数据生成编码数据。 选择器选择并输出具有由编码处理单元生成的数据的最小数据大小的编码数据。

公开(公告)号：US20080037883A1

公开(公告)日：2008-02-14

申请号：US11835099

申请日：2007-08-07

申请人： TAKAYUKI TSUTSUMI ,  Hisashi Ishikawa

发明人： TAKAYUKI TSUTSUMI ,  Hisashi Ishikawa

IPC分类号： G06K9/36

CPC分类号： H04N19/85 ,  H04N19/12 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/46 ,  H04N19/593 ,  H04N19/60 ,  H04N19/70 ,  H04N19/80

摘要： Even an image in which a gradation character/line image having variations in pixel values to a certain degree and a natural image are mixed can be reproduced with sufficient quality in the gradation character/line image and high encoding efficiency, and further, encoded data can be generated with high encoding efficiency. An extraction unit binarizes pixel values in an input block with a predetermined threshold, thereby generates identification information identifying pixels to be substituted and pixels not to be substituted. An average differential value generation unit calculates a differential value between an average value of the pixels to be substituted and an average value of the pixels not to be substituted. A substitute color generation unit subtracts the differential value from the pixels to be substituted. An encoding unit encodes the identification information, the differential value and pixel values of the block after substitution.

摘要翻译： 即使在灰度字符/行图像中具有足够的质量并且具有高的编码效率的情况下也可以再现混合具有一定程度的像素值的变化的灰度字符/行图像和自然图像的图像，并且编码数据 以高编码效率生成。 提取单元将具有预定阈值的输入块中的像素值二值化，从而生成识别要替换的像素和不被替换的像素的识别信息。 平均微分值生成单元计算要替换的像素的平均值与不被替换的像素的平均值之间的差分值。 替代颜色生成单元从要替换的像素中减去差分值。 编码单元对取代后的块的识别信息，差分值和像素值进行编码。

公开(公告)号：US07266254B2

公开(公告)日：2007-09-04

申请号：US10365551

申请日：2003-02-13

申请人： Hisashi Ishikawa ,  Ryoko Mise

发明人： Hisashi Ishikawa ,  Ryoko Mise

IPC分类号： G06K9/54

CPC分类号： G06T3/4092 ,  G06T1/20 ,  Y10S707/99932 ,  Y10S707/99936

摘要： There are provided a data processing apparatus which makes an I/F for data processing modules (processors) versatile to facilitate addition/modification on a data processing module basis in accordance with processing contents, an image processing apparatus, and a method for the apparatuses. A data processing module (3) includes a read address generator (11), read FIFO (7), write address generator (13), write FIFO (9), and arbiter (10) and is connected to a host arbiter (4) through a 1-channel port. The read address generator (11) and write address generator (13) generate interrupts upon acceptance of final access requests so as to control activation of each data processing module (8-1-8-m) in accordance with the state of each data processing module in interrupt processing. Note that data transfer among the respective data processing modules is performed on a RAM (6).

公开(公告)号：US07139096B2

公开(公告)日：2006-11-21

申请号：US09983102

申请日：2001-10-23

申请人： Hisashi Ishikawa

发明人： Hisashi Ishikawa

IPC分类号： B41J2/005

CPC分类号： H04N1/52

摘要： The colors used for forming an image are limited in advance to a predetermined number of color patterns called representative colors; on the host side the image data received is divided into blocks, for each of which a representative color is determined in a representative color code conversion unit; the representative colors and their associated representative color codes are transmitted to the printer side; and on the printer side the representative color codes are converted into dot patterns in a pattern conversion unit for each pass before being output. The above procedure allows a series of processing—resolution conversion, masking/UCR processing, output γ correction and binarization processing—to be realized with a simple configuration.

公开(公告)号：US07130083B1

公开(公告)日：2006-10-31

申请号：US09586884

申请日：2000-06-05

申请人： Yuji Konno ,  Hisashi Ishikawa ,  Hiroshi Tajika ,  Miyuki Fujita ,  Norihiro Kawatoko ,  Tetsuya Edamura ,  Tetsuhiro Maeda

发明人： Yuji Konno ,  Hisashi Ishikawa ,  Hiroshi Tajika ,  Miyuki Fujita ,  Norihiro Kawatoko ,  Tetsuya Edamura ,  Tetsuhiro Maeda

IPC分类号： H04N1/40 ,  H04N1/405 ,  G06K15/00

CPC分类号： H04N1/4015 ,  H04N1/4051

摘要： When recording a gradation pixel by performing pseudo-halftone processing, the occurrence of unevenness in the density in the recorded image is suppressed. For that purpose, when recording a pseudo-halftone image using dot patterns, a dot-pattern table storing a plurality of different dot patterns is provided for each gradation value. One dot-pattern table is selected from N dot-pattern tables based on gradation-value information for each pixel. One dot pattern is selected from the selected dot-pattern table, based on position information indicated by the pixel, and recording is performed using the selected dot pattern. It is thereby possible to prevent the concentrated use of a particular nozzle of a recording head, and suppress the occurrence of unevenness in the density due to characteristics of the specific nozzle.