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公开(公告)号：US5272546A
公开(公告)日：1993-12-21
申请号：US664313
申请日：1991-03-04
IPC分类号： G02B26/10 , B41J2/44 , B41J2/47 , G06K15/12 , H03K5/00 , H03K5/13 , H03K7/08 , H04N1/036 , H04N1/405 , H04N1/40 , G01D15/00
CPC分类号： H03K5/131 , G06K15/1209 , H03K7/08 , H04N1/4056 , H03K2005/00234
摘要： A laser beam controller comprises a basic pulse signal generating circuit, a delay circuit, a delay control circuit, a pulse generating circuit and a laser beam generator. The basic pulse signal generating circuit generates periodically occurring basic pulse signal. The delay circuit delays the basic pulse signal. The delay control circuit controls the delay time of the basic pulse in the delay circuit according to image data. The pulse generating circuit generates an output pulse having a width corresponding to the delay time of the basic pulse signal. The laser beam generator generates a laser beam for a duration corresponding to the width of the output pulse by said pulse generating circuit. According to the controller, any desired gradation of a pixel of the image is desirably produced.
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2.发明授权
公开(公告)号：US5418896A
公开(公告)日：1995-05-23
申请号：US669628
申请日：1991-03-14
CPC分类号： G06T3/608 , H04N1/3878
摘要： A skew processing circuit 33 includes two line buffers, a skew processing type line buffer 331 and an original type line buffer 332, and a write/read control circuit 333 for controlling the two line buffers. The write/read control circuit 333 is a control circuit for writing a given image data in the line buffers 331, 332 in single lines and selectively reading the data written in the two line buffers 331, 332. When an image data is written in the original type line buffer 332, addressed are sequentially written from the head address 0. On the other hand, when the image data is written in the skew processing type line buffer 331, a write start address RH0 is determined in correspondence with a skew angle, and the write start address RH0 is shifted in each line to discard the head portion of the image data by specified dots (specified addresses). Thus, by controlling the writing of data in the two line buffers 331, 332 and reading data from them, an image in an arbitrary area can be processed into the skew with an arbitrary angle.
摘要翻译： 歪斜处理电路33包括两条行缓冲器，歪斜处理型行缓冲器331和原始行行缓冲器332，以及用于控制两行缓冲器的写/读控制电路333。 写入/读取控制电路333是用于将线路缓冲器331,332中的给定图像数据以单行写入并选择性地读取写入两行缓冲器331,332中的数据的控制电路。当将图像数据写入 原始类型行缓冲器332，从头地址0顺序写入。另一方面，当图像数据被写入偏斜处理类型行缓冲器331时，写入开始地址RH0与斜角对应地确定， 并且写入开始地址RH0在每行中移位，以通过指定的点（指定的地址）丢弃图像数据的头部。 因此，通过控制两行缓冲器331,332中的数据的写入和从它们读取数据，任意区域中的图像可以被处理成任意角度的偏斜。
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公开(公告)号：US5072310A
公开(公告)日：1991-12-10
申请号：US523344
申请日：1990-05-14
CPC分类号： G03G15/5066 , H04N1/00962 , H04N1/2104 , H04N1/2158 , H04N1/32561 , G03G2215/00092 , H04N1/00204 , H04N2201/0081 , H04N2201/0082
摘要： An integrated circuit (IC) card for use in an image processing machine, such as a digital copying machine. The IC card includes a first storage area for storing data for controlling said image processor and a second storage area for storing image data to be processed by said image processor.
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4.发明授权Image processor for smoothing and differentiating periodic areas and character areas using coefficients 失效图像处理器，用于使用系数平滑和微分周期区域和字符区域
公开(公告)号：US5684600A
公开(公告)日：1997-11-04
申请号：US575083
申请日：1995-12-19
CPC分类号： H04N1/4092 , H04N1/40062 , H04N1/58
摘要： An image processor performs emphasis processings suitable for materials to be copied to produce clear copy outputs. The image processor has a digitizing circuit which outputs a digital signal produced by digitizing an image. The processor further has a first detecting circuit which detects an area of the digital signal including a periodic component, a second detecting circuit which detects a character area of the digital signal, and a smoothing circuit which smoothes the digital signal to output a smoothed signal. Either the digital signal or the smoothed signal is selected and outputted by a changeover circuit according to an output of the first detecting circuit. The output of the changeover circuit is differentiated into a plurality of differentiated signals by a differentiating circuit by use of a plurality of different coefficients. One of the differentiated signals is selected and outputted according to the outputs of the first and second detecting circuits.
摘要翻译： 图像处理器执行适合于要复制的材料的强调处理以产生清晰的拷贝输出。 图像处理器具有数字化电路，其输出通过数字化图像而产生的数字信号。 处理器还具有检测包括周期性分量的数字信号的区域的第一检测电路，检测数字信号的字符区域的第二检测电路以及平滑数字信号以输出平滑信号的平滑电路。 根据第一检测电路的输出，通过转换电路选择和输出数字信号或平滑信号。 通过使用多个不同的系数，通过微分电路将转换电路的输出微分成多个微分信号。 根据第一和第二检测电路的输出来选择和输出微分信号之一。
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5.发明授权Method of and apparatus for detecting pixels constituting dotted image area utilizing distance between change points of pixel values 失效用于利用像素值的变化点之间的距离来检测构成点图像区域的像素的方法和装置
公开(公告)号：US5754312A
公开(公告)日：1998-05-19
申请号：US558187
申请日：1995-11-15
IPC分类号： H04N1/40
CPC分类号： H04N1/40062
摘要： Disclosed is an apparatus for detecting pixels in a dotted image area (dotted area pixels). Image data corresponding to each of the pixels is coded into one of a predetermined number of discrete values. The distance between change points at which the value of the pixel after the coding is changed from a first value to a second value is detected. Further, it is examined whether or not periodicity is recognized in the distance between the change points in the vicinity of a target pixel. If periodicity is recognized in the distance between the change points, it is judged that the target pixel may constitute a dotted image area.
摘要翻译： 公开了一种用于检测虚线图像区域（虚线区域像素）中的像素的装置。 对应于每个像素的图像数据被编码为预定数量的离散值之一。 检测编码后的像素的值从第一值变为第二值的变化点之间的距离。 此外，检查在目标像素附近的变化点之间的距离是否识别周期性。 如果在变化点之间的距离中识别周期性，则判断为目标像素可以构成虚线图像区域。
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公开(公告)号：US5712924A
公开(公告)日：1998-01-27
申请号：US551293
申请日：1995-10-31
CPC分类号： H04N1/46
摘要： A color image is by an optical scanner for conversion into three primary color data corresponding to the respective densities of the three primary colors. An edge detector detects a pixel of an edge based on the three primary color data. A pixel color judging device judges a color of a target pixel based on the three primary color data of the target pixel and its adjacent pixels. Based on edge detection results of the edge detector and pixel color judgment results of the pixel color judging device, detected is a pixel of a black edge. Judgement conditions for the pixel color judgement are established based upon characteristics that depend upon the order of arrangement of color filters in a scanner.
摘要翻译： 彩色图像是通过光学扫描仪转换成对应于三原色相应密度的三原色数据。 边缘检测器基于三原色数据检测边缘的像素。 像素颜色判断装置根据目标像素及其相邻像素的三原色数据判断目标像素的颜色。 基于边缘检测器的边缘检测结果和像素颜色判断装置的像素颜色判断结果，检测到黑色边缘的像素。 基于取决于扫描仪中的滤色器的布置顺序的特性来建立像素颜色判断的判断条件。
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公开(公告)号：US5729627A
公开(公告)日：1998-03-17
申请号：US556839
申请日：1995-11-02
CPC分类号： H04N1/40062
摘要： An apparatus for and a method of judging a dotted image area using a small-capacity memory. Image data corresponding to one line out of image data representing an original image are stored in a line memory. On the line corresponding to the image data stored in the line memory, a target pixel is successively set along the main scanning direction. Image data corresponding to the target pixel is compared with image data corresponding to pixels around the target pixel. It is judged whether or not the target pixel is a peculiar point pixel on the basis of the result of the comparison. Further, the distance between peculiar point pixels is operated. The operated distance between the peculiar point pixels is referred to a predetermined judgment basis, to judge whether or not a judging area including the finite number of pixels is a dotted image area.
摘要翻译： 一种使用小容量存储器来判断虚线图像区域的装置和方法。 对应于表示原始图像的图像数据中的一行的图像数据被存储在行存储器中。 在对应于存储在行存储器中的图像数据的行上，沿着主扫描方向连续设置目标像素。 对应于目标像素的图像数据与对应于目标像素周围的像素的图像数据进行比较。 基于比较结果判断目标像素是否是特殊点像素。 此外，操作特殊点像素之间的距离。 特定点像素之间的操作距离参照预定判断基准，判断包括有限像素数的判断区域是否为虚线图像区域。
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公开(公告)号：US5070412A
公开(公告)日：1991-12-03
申请号：US441255
申请日：1989-11-27
CPC分类号： H04N1/3935
摘要： An enlargement/reduction signal generating apparatus comprises means for generating basic clock pulses, means for generating frequency-divided clock pulses of different kinds, having the different frequencies by dividing the frequency of said basic clock pulses, means for generating selection signals to combine said clock pulses generated by said basic clock pulse generating means and said frequency-divided clock pulse generating means, whereby the ratio of said reading clock pulses to said writing clock pulses corresponds to a predetermined enlargement/reduction ratio, and means for making enlargement/reduction clock pulses by combining said basic clock pulses and said frequency-divided clock pulses in correspondence with said selection signals from said selection signal generating means and for outputting said enlargement/reduction clock pulses as said reading clock pulses or said writing clock pulses. The enlargement/reduction signal generating apparatus is an apparatus for generating reading clock pulses and writing clock pulses to enlarge or reduce the image of digital data stored in a storing means. The apparatus may be disposed in an image processing unit for processing image information. The image processing unit may be used as a unit which receives image information from an optical unit, enlarges or reduces the image information, and outputs the enlarged/reduced image information to an image forming part, in a copying machine having a scanner and a printer. The copying machine may be a digital copying machine having a laser unit.
摘要翻译： 放大/缩小信号发生装置包括用于产生基本时钟脉冲的装置，用于产生不同种类的分频时钟脉冲的装置，具有通过划分所述基本时钟脉冲的频率而具有不同频率的装置，用于产生选择信号的装置，以组合所述时钟 由所述基本时钟脉冲发生装置和所述分频时钟脉冲发生装置产生的脉冲，由此所述读取时钟脉冲与所述写入时钟脉冲的比率对应于预定的放大/缩小比率，以及用于进行放大/缩小时钟脉冲的装置 通过将所述基本时钟脉冲和所述分频时钟脉冲对应于来自所述选择信号发生装置的所述选择信号组合，并输出所述放大/缩小时钟脉冲作为所述读取时钟脉冲或所述写入时钟脉冲。 放大/缩小信号发生装置是用于产生读取时钟脉冲和写入时钟脉冲以放大或减少存储在存储装置中的数字数据的图像的装置。 该装置可以设置在用于处理图像信息的图像处理单元中。 图像处理单元可以用作从光学单元接收图像信息的单元，放大或缩小图像信息，并且在具有扫描仪和打印机的复印机中将放大/缩小图像信息输出到图像形成部分 。 复印机可以是具有激光单元的数字复印机。
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公开(公告)号：US5016194A
公开(公告)日：1991-05-14
申请号：US431931
申请日：1989-11-06
CPC分类号： H04N1/3871 , H04N1/393
摘要： In an image forming apparatus including a digital image processing device, an overlay memory stores predetermined image data. The image data stored in the overlay memory is read at a predetermined timing in a predetermined cycle and composite data is made from the image data and image data outputted from a line memory. Since the image data stored in the overlay memory is read at the predetermined timing in the predetermined cycle, various kinds of overlaid image which may include a space-magnified image can be made by arbitrarily selecting the timing and cycle for reading.
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10.发明授权Apparatus for and method of detecting dotted image area using two types of judging areas 失效使用两种判断区域检测点图像区域的装置和方法
公开(公告)号：US5771313A
公开(公告)日：1998-06-23
申请号：US556840
申请日：1995-11-02
CPC分类号： H04N1/40062
摘要： An apparatus for and a method of detecting a dotted image area in an image. It is judged on the basis of image data corresponding to pixels in a first judging area which includes a predetermined number of pixels including a target pixel whether or not the target pixel is a peculiar point pixel (a peak pixel or a dip pixel). Further, it is judged on the basis of image data corresponding to pixels in a second judging area which is larger than the first judging area whether or not the target pixel is a peculiar point pixel. The dotted image area in the image is detected on the basis of the results of judgment related to the first judging area and the second judging area.
摘要翻译： 一种检测图像中虚线图像区域的装置和方法。 基于与包括目标像素的预定数量的像素在内的第一判断区域中的像素相对应的图像数据，判断目标像素是否是特殊点像素（峰值像素或dip像素）。 此外，基于与第一判断区域大于第二判断区域的像素对应的图像数据来判断目标像素是否是特殊点像素。 基于与第一判断区域和第二判断区域相关的判定结果来检测图像中的虚线图像区域。
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