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    • 44. 发明授权
    • Image reading apparatus
    • 图像读取装置
    • US06897987B2
    • 2005-05-24
    • US10252397
    • 2002-09-24
    • Yasuyuki NakamuraAkihiro Yoshitani
    • Yasuyuki NakamuraAkihiro Yoshitani
    • H04N1/00H04N1/21H04N1/32H04N1/04
    • H04N1/00241H04N1/00236H04N1/32358H04N2201/0074H04N2201/0081H04N2201/0087H04N2201/3288
    • When an image read start command is received from a PC, an image reading unit first sequentially reads an image of an original. An output signal of the image reading unit is processed by an analog signal processing circuit, an A/D converter, and an image processing circuit and is supplied to a transfer control circuit. When an instruction from the PC indicates a direct transfer mode, the transfer control circuit outputs the image data from the image processing circuit as it is to an interface. When the instruction from the PC indicates a temporary storage mode, the transfer control unit temporarily stores the image data into a storage medium of an auxiliary storage device. When there is a reading request from the PC, the transfer control circuit reads out the image data which is stored into the auxiliary storage device and transfers it to the PC through the interface.
    • 当从PC接收到图像读取开始命令时,图像读取单元首先顺序地读取原稿的图像。 图像读取单元的输出信号由模拟信号处理电路,A / D转换器和图像处理电路处理,并提供给传送控制电路。 当来自PC的指令指示直接传送模式时,传送控制电路将来自图像处理电路的图像数据原样输出到接口。 当来自PC的指示指示临时存储模式时,传送控制单元将图像数据临时存储到辅助存储装置的存储介质中。 当存在来自PC的读取请求时,传送控制电路读出存储在辅助存储装置中的图像数据,并通过接口将其传送到PC。
    • 46. 发明授权
    • Current generating device for complementarily generating two currents of
different magnitudes in response to one-bit data
    • 电流产生装置,用于互补地产生响应于一位数据的不同幅度的两个电流
    • US5148164A
    • 1992-09-15
    • US685411
    • 1991-04-16
    • Yasuyuki NakamuraToshio Kumamoto
    • Yasuyuki NakamuraToshio Kumamoto
    • H03K17/041
    • H03K17/04106
    • A current generating device for generating two different currents having different magnitudes in response to corresponding one-bit data of digital data of a plurality of bits includes: NMOS transistors, (1,2,3), a control signal generating circuit and a supply circuit. The control signal generating circuit generates a voltage (V2) at which NMOS transistors (2,3) can be turned on and a voltage (V3) which is in the range between a ground potential and threshold values of the NMOS transistors and at which NMOS transistors (2,3) can be turned off. The supply circuit complementarily applies voltages (V1,V2) to NMOS transistors (2,3). NMOS transistor (1) generates a current with a predetermined magnitude. NMOS transistors (2,3) respond to voltages (V2, V3) to switch and allow/prevent passage of the predetermined-magnitude current generated by NMOS transistor (1).
    • 电流产生装置,用于响应于多个位的数字数据的对应的一位数据而产生具有不同幅度的两个不同电流,包括:NMOS晶体管,(1,2,3),控制信号发生电路和电源电路 。 控制信号发生电路产生NMOS晶体管(2,3)可以导通的电压(V2)和位于NMOS晶体管的接地电位和阈值之间的范围内的电压(V3),NMOS 晶体管(2,3)可以关闭。 电源电路互补地将电压(V1,V2)施加到NMOS晶体管(2,3)。 NMOS晶体管(1)产生具有预定大小的电流。 NMOS晶体管(2,3)响应于电压(V2,V3)来切换并允许/阻止由NMOS晶体管(1)产生的预定电流的通过。
    • 48. 发明申请
    • IMAGE ENLARGEMENT METHOD, IMAGE ENLARGEMENT APPARATUS, AND IMAGE FORMING APPARATUS
    • 图像放大方法,图像放大装置和图像形成装置
    • US20100182623A1
    • 2010-07-22
    • US12688841
    • 2010-01-15
    • Yasuyuki Nakamura
    • Yasuyuki Nakamura
    • G06F15/00
    • H04N1/3935G06T1/00
    • Virtual pixels not included in input image data are arranged before a first input pixel and after a last input pixel of an input pixel array, respectively. A position of a first output pixel is determined so that a difference between a position of the first input pixel and the position of the first output pixel equals a difference between a position of the last input pixel and a position of a last output pixel. Pixel data of an output pixel before the first input pixel is interpolated based on pixel data of the virtual pixel before the first input pixel and pixel data of the first input pixel. Pixel data of an output pixel after the last input pixel is interpolated based on pixel data of the virtual pixel arranged after the last input pixel and pixel data of the last input pixel.
    • 不包括在输入图像数据中的虚拟像素分别布置在第一输入像素之前和输入像素阵列的最后输入像素之后。 确定第一输出像素的位置,使得第一输入像素的位置与第一输出像素的位置之间的差等于最后输入像素的位置与最后输出像素的位置之间的差值。 基于第一输入像素之前的虚拟像素的像素数据和第一输入像素的像素数据来内插第一输入像素之前的输出像素的像素数据。 基于最后输入像素之后布置的虚拟像素的像素数据和最后输入像素的像素数据来内插最后输入像素之后的输出像素的像素数据。
    • 50. 发明授权
    • Image processing apparatus and image processing method
    • 图像处理装置和图像处理方法
    • US07675523B2
    • 2010-03-09
    • US11487370
    • 2006-07-17
    • Katsutoshi UshidaYuichi NaoiYoshiaki KatahiraYasuyuki NakamuraKoichi MorishitaMakoto Fukuo
    • Katsutoshi UshidaYuichi NaoiYoshiaki KatahiraYasuyuki NakamuraKoichi MorishitaMakoto Fukuo
    • G06F13/00G06F15/167G06F12/06
    • G06T1/60G06T1/0007
    • To provide an image processing technique compatible with both a CCD and a CIS, which controls storage of image data read by each device in a memory and the read of the stored data for each rectangular area to obtain a high memory efficiency, an image processing apparatus includes a memory area control section which sets, for image data bitmapped on a first memory, a rectangular area divided in a main scanning direction and sub-scanning direction, an address generation section which generates address information to read out image data corresponding to the rectangular area in correspondence with the set rectangular area, a memory control section which reads out the image data corresponding to the rectangular area and DMA-transfers the image data to a second memory in accordance with the generated address information, and an image processing section which executes image processing for each rectangular area of the DMA-transferred data by using the second memory.
    • 为了提供与CCD和CIS兼容的图像处理技术,其控制存储器中的每个设备读取的图像数据的存储器以及用于每个矩形区域的存储的数据的读取以获得高的存储器效率,图像处理装置 存储区域控制部分,对于在第一存储器上位映射的图像数据,设置在主扫描方向和副扫描方向上分割的矩形区域,生成地址信息以读出对应于矩形的图像数据的地址信息 区域,与设置的矩形区域对应的存储器控​​制部分,读出对应于矩形区域的图像数据的存储器控​​制部分,并且根据生成的地址信息将图像数据DMA传送到第二存储器;以及图像处理部件,其执行 通过使用第二存储器对DMA传送数据的每个矩形区域进行图像处理。