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    • 1. 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。