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    • 1. 发明授权
    • Image forming apparatus and method
    • 图像形成装置及方法
    • US5875044A
    • 1999-02-23
    • US815897
    • 1997-03-12
    • Kaoru SetoAtsushi KashiharaTakashi KawanaManabu Takebayashi
    • Kaoru SetoAtsushi KashiharaTakashi KawanaManabu Takebayashi
    • B41J5/30B41J2/485B41J2/52H04N1/387H04N1/40H04N1/58G03F3/08
    • H04N1/58H04N1/40068
    • An image forming apparatus and method produce, when 600 dpi image data is generated from 300 dpi image data, interpolated data of a pixel of interest by a two-value logical operation in a case where the image data about the periphery of the pixel of interest appertains to binary representation. When the image data is judged to appertain to an image of multivalued representation, the interpolated data of the pixel of interest is produced by a numerical operation. As a result, a 600 dpi picture of the same size can be printed and recorded in such a manner that outline sharpness and smoothness, which are characteristics possessed by a two-value image, are maintained at portions of the input 300 dpi image data that are two-value images while smoothness of the grayscale is maintained at portions of the input 300 dpi image data that are halftone images.
    • 在关于感兴趣像素的周围的图像数据的情况下,当从300dpi图像数据生成600dpi图像数据时,图像形成装置和方法产生通过二值逻辑运算的感兴趣像素的内插数据 适用于二进制表示。 当判断图像数据符合多值表示的图像时,通过数字操作产生感兴趣像素的内插数据。 结果,可以打印和记录具有相同尺寸的600dpi图像,使得在输入300dpi图像数据的部分保持作为两值图像所具有的特征的轮廓清晰度和平滑度, 是两值图像,而灰度图像的平滑度在作为半色调图像的输入300dpi图像数据的部分处被保持。
    • 3. 发明授权
    • Image processing apparatus
    • 图像处理装置
    • US5586227A
    • 1996-12-17
    • US855083
    • 1992-03-20
    • Takashi KawanaKaoru SetoHiroshi ManoHiromichi YamadaAtsushi KashiharaTetsuo Saito
    • Takashi KawanaKaoru SetoHiroshi ManoHiromichi YamadaAtsushi KashiharaTetsuo Saito
    • G06K15/00G06F15/00
    • G06K15/00G06K2215/006G06K2215/0077
    • An image processing apparatus which generates an output image based on inputted print data, includes a resolution converting device which converts image data corresponding to the inputted print data at a first resolution into image data having a second resolution. The image conversion device includes a plurality of arithmetic processing units each of which performs computations which differ from the others, with one of the plurality of arithmetic processing unit being selected in dependence upon a recording density set for recording the output image. In other aspects, the resolution conversion computation can be input into the device from an external device. In situations where the generated output image is recorded on a pulse-width-modulated device, such as a laser beam printer, it is possible to control the pulse-width based on the density set for recording.
    • 一种基于输入的打印数据生成输出图像的图像处理装置,包括分辨率转换装置,其以与第一分辨率对应的输入的打印数据的图像数据转换为具有第二分辨率的图像数据。 图像转换装置包括多个算术处理单元,每个运算处理单元执行与其他运算不同的计算,其中,根据为记录输​​出图像设置的记录密度来选择多个算术处理单元中的一个。 在其他方面,分辨率转换计算可以从外部设备输入到设备中。 在产生的输出图像被记录在诸如激光束打印机的脉冲宽度调制装置的情况下,可以基于为记录设置的密度来控制脉冲宽度。
    • 5. 发明授权
    • Image smoothing using selection among plural pre-stored pixel patterns
as smoothed data
    • 使用多个预先存储的像素图案之间的选择作为平滑数据进行图像平滑
    • US5652660A
    • 1997-07-29
    • US430161
    • 1995-04-27
    • Kaoru SetoKiyoshi KanaiwaMichio ItohHiroshi ManoHiromichi YamadaAtsushi KashiharaTakashi KawanaHiroshi AtobeTetsuo Saito
    • Kaoru SetoKiyoshi KanaiwaMichio ItohHiroshi ManoHiromichi YamadaAtsushi KashiharaTakashi KawanaHiroshi AtobeTetsuo Saito
    • G06K15/12H04N1/387G01D15/14G06K9/40G06K9/46
    • G06K15/1214G06K15/128G06K2215/0011G06K2215/0057G06K2215/006G06K2215/0071
    • Binary data (VDO) developed to a dot pattern are sequentially stored in line memories (1-9). A processing circuit (43) is constituted by a logic calculation circuit, and determines an edge portion of an image or a halftone image on the basis of 11.times.9 pixel data in shift registers (34-43). When the edge portion of an image is determined, data of a pixel of interest is converted to data that can print a smooth edge portion. Changed data (VDOM) is converted again according to the type of toner. The converted signal is supplied to a laser driver of a printer, and a printing operation is performed by scanning a laser. A resolution setting unit (1700) receives a resolution setting command from an external apparatus (1300), and sets a designated resolution in a printer (1200) according to the resolution setting command. The resolution setting unit (1700) divides one pixel into an optimal number of pixel sections on the basis of the designated resolution, and sets a logic circuit for performing optimal smoothing processing for divided data in a smoothing unit (1018). Bit map development based on code data supplied from the external apparatus (1300), and smoothing processing according to a smoothing logic, are performed.
    • 显影为点图案的二进制数据(VDO)被顺序存储在行存储器(1-9)中。 处理电路(43)由逻辑运算电路构成,根据移位寄存器(34-43)中的11×9像素数据,确定图像的边缘部分或半色调图像。 当确定图像的边缘部分时,感兴趣的像素的数据被转换成能够打印平滑边缘部分的数据。 更改的数据(VDOM)将根据墨粉类型再次进行转换。 转换的信号被提供给打印机的激光驱动器,并且通过扫描激光器执行打印操作。 分辨率设定单元(1700)从外部设备(1300)接收分辨率设置命令,并根据分辨率设置命令在打印机(1200)中设置指定的分辨率。 分辨率设置单元(1700)根据指定的分辨率将一个像素划分为最佳数量的像素部分,并且设置用于对平滑单元(1018)中的分割数据执行最佳平滑处理的逻辑电路。 执行基于从外部设备(1300)提供的代码数据和根据平滑逻辑的平滑处理的位图开发。