利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

36 条记录 (耗时 0.026 秒)

    Image processing apparatus
    21.
    发明授权
    Image processing apparatus 失效
    图像处理装置

    公开(公告)号：US5465173A

    公开(公告)日：1995-11-07

    申请号：US225973

    申请日：1994-04-12

    申请人： Hisashi Ishikawa ,  Hideo Homma ,  Yoshitake Nagashima ,  Takashi Saito

    发明人： Hisashi Ishikawa ,  Hideo Homma ,  Yoshitake Nagashima ,  Takashi Saito

    IPC分类号： G06T9/00 ,  H04N1/41 ,  H04N1/64

    CPC分类号： H04N1/41 ,  G06T9/005 ,  H04N1/4105 ,  H04N1/642

    摘要： An image processing apparatus has a memory device for storing pixel image data including both halftone image data such as data of image of a photograph having a gradation and line image data such as data of text containing characters. The storage is conducted on the basis of blocks each having a predetermined number of pixels. The mean information quantity of the halftone image data per pixel stored in the memory means is not greater than the information quantity of the line image data per pixel stored in the memory means. The halftone image data being compressed on the basis of the block. Therefore, both the halftone image data and line image data can be stored in a small memory by using common addresses, without causing any degradation of the image quality.

    摘要翻译： 一种图像处理装置具有用于存储像素图像数据的存储装置，该像素图像数据包括两个半色调图像数据，例如具有灰度的照片的图像的数据和诸如包含字符的文本的数据的行图像数据。 基于每个具有预定数量像素的块进行存储。 存储在存储装置中的每像素的半色调图像数据的平均信息量不大于存储在存储装置中的每像素的行图像数据的信息量。 基于该块压缩的半色调图像数据。 因此，半色调图像数据和行图像数据都可以通过使用公共地址存储在小存储器中，而不会导致图像质量的任何劣化。

    Image forming apparatus
    22.
    发明授权
    Image forming apparatus 失效
    图像形成装置

    公开(公告)号：US5182575A

    公开(公告)日：1993-01-26

    申请号：US598186

    申请日：1990-10-16

    申请人： Motoi Kato ,  Yoshitake Nagashima

    发明人： Motoi Kato ,  Yoshitake Nagashima

    IPC分类号： G02B26/10 ,  B41J2/44 ,  G02B26/12 ,  G03G15/04 ,  G06K15/12 ,  H04N1/04 ,  H04N1/113 ,  H04N1/12 ,  H04N1/405

    CPC分类号： H04N1/4057 ,  G02B26/127 ,  G06K15/1204 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0424 ,  H04N2201/0458

    摘要： This disclosure relates to an image forming apparatus in which an image is formed by deflecting a light beam a minute distance in a sub-scanning direction every pixel of image data. By controlling the emission intensity of the light beam utilizing a .gamma. correction, and by controlling the emission time of the light beam utilizing PWM control, the beam spot can be adjusted to control the dot size of the image. Accordingly, the dot density in image formation can be raised by minute deflection in the sub-scanning direction, and the reproducibility of characters and graphics is improved, particularly in the oblique direction. Furthermore, tone reproducibility of multi-tone image data is enhanced by minute deflection in the sub-scanning direction and adjustment of image dot size.

    摘要翻译： 本公开涉及一种图像形成装置，其中通过使图像数据的每个像素沿副扫描方向微小的距离偏转光束而形成图像。 通过利用伽马校正来控制光束的发射强度，并且通过利用PWM控制来控制光束的发射时间，可以调整束斑以控制图像的点尺寸。 因此，图像形成中的点密度可以通过副扫描方向上的微小偏转而提高，并且特别是在倾斜方向上提高了字符和图形的再现性。 此外，多色调图像数据的色调再现性通过副扫描方向上的微小偏转和图像点尺寸的调整而增强。

    Video projection apparatus
    23.
    发明授权
    Video projection apparatus 失效
    视频投影仪

    公开(公告)号：US4989076A

    公开(公告)日：1991-01-29

    申请号：US147519

    申请日：1988-01-25

    申请人： Mitsuru Owada ,  Mizuho Tajima ,  Yoshitake Nagashima

    发明人： Mitsuru Owada ,  Mizuho Tajima ,  Yoshitake Nagashima

    IPC分类号： H04N9/31

    CPC分类号： H04N9/3105 ,  H04N9/3167

    摘要： An apparatus for receiving the illumination light from an illumination light souce and for providing a color image on a projection lens includes three displays responsive to a video signal for modulating incident light to display respective component images. Also included are a first dichroic layer for separating the illumination light into a first light component and a first mixed light of different wavelengths to transmit the first light component to one of the displays, a second dichroic layer for separating the mixed light into second and third light component of different wavelengths to transmit the second and third light component to the other two of the displays, respectively, a third dichroic layer for combining the first and second information lights from the first two displays, and a fourth dichroic layer for further combining the information light combined by the third dichroic layer with a third information light from the third display.

    摘要翻译： 用于从照明光源接收照明光并用于在投影透镜上提供彩色图像的装置包括响应于视频信号的三个显示器，用于调制入射光以显示各个分量图像。 还包括用于将照明光分离成第一光分量和不同波长的第一混合光的第一二向色层，以将第一光分量透射到显示器之一，第二二向色层，用于将混合光分离成第二和第三 不同波长的光分量分别将第二和第三光分量传输到另外两个显示器，用于组合来自前两个显示器的第一和第二信息光的第三二向色层和用于进一步组合第二二向色层的第四二向色层 由第三分色层组合的信息光与来自第三显示器的第三信息光。

    Color separation circuit
    25.
    发明授权
    Color separation circuit 失效
    颜色分离电路

    公开(公告)号：US4468689A

    公开(公告)日：1984-08-28

    申请号：US414910

    申请日：1982-09-03

    申请人： Yoshitake Nagashima

    发明人： Yoshitake Nagashima

    IPC分类号： H04N9/66 ,  H04N9/78 ,  H04N9/535

    CPC分类号： H04N9/78

    摘要： A color separation circuit includes a comb filter for generating output signals corresponding to the sum of and difference between a composite input video signal and a signal prepared by delaying the composite input video signal by one horizontal scanning time period. The difference signal from the comb filter is sampled at timings with a phase difference of 90.degree. of a chrominance signal contained therein. By passing through a low-pass filter the signal sampled at a timing corresponding to the 33.degree. phase in each cycle of to chrominance signal, an EQ-chrominance signal is obtained. By passing through a low-pass filter the signal sampled at a timing corresponding to the 123.degree. phase in each cycle of the chrominance signal, an EI-chrominance signal is obtained.

    摘要翻译： 颜色分离电路包括梳状滤波器，用于产生对应于复合输入视频信号和通过将复合输入视频信号延迟一个水平扫描时间周期而准备的信号的和之和的输出信号。 来自梳状滤波器的差分信号在其中包含的色度信号的相位差为90°的定时被采样。 通过低通滤波器在每个周期中对应于33°相位的时刻对色度信号进行采样的信号，得到EQ色度信号。 通过低通滤波器，在色度信号的每个周期中，对应于123°相位的定时采样信号，得到EI色度信号。

    Double balance type switching circuit
    26.
    发明授权
    Double balance type switching circuit 失效
    双平衡型开关电路

    公开(公告)号：US4258274A

    公开(公告)日：1981-03-24

    申请号：US945496

    申请日：1978-09-25

    申请人： Yoshitake Nagashima ,  Kazumasa Noyori ,  Hideki Moriyama

    发明人： Yoshitake Nagashima ,  Kazumasa Noyori ,  Hideki Moriyama

    IPC分类号： H03K17/16 ,  H03K17/60

    CPC分类号： H03K17/16 ,  H03K17/603

    摘要： There is provided a double balance type switching circuit including a switching control signal generator; a first differential amplifier formed of first and second transistors; a second differential amplifier connected between the collector of the first transistor and a power supply terminal and formed of third and fourth transistors whose bases are respectively connected to the first and second output terminals of the switching control signal generator; and a third differential amplifier connected between the collector of the second transistor and the power supply terminal and formed of fifth and sixth transistors whose bases are respectively connected to the first and second output terminals of the switching control signal generator. The switching control signal generator produces from the first and second output terminals output signals whose voltage levels are different from one another and are converted between first and second levels, but during the conversion to output signals are temporarily made to have the first voltage level.

    摘要翻译： 提供了一种包括开关控制信号发生器的双平衡型开关电路; 由第一和第二晶体管构成的第一差分放大器; 连接在第一晶体管的集电极和电源端子之间的第二差分放大器，其第三和第四晶体管的基极分别连接到开关控制信号发生器的第一和第二输出端; 以及第三差分放大器，连接在第二晶体管的集电极和电源端子之间，并且由基极分别连接到开关控制信号发生器的第一和第二输出端子的第五和第六晶体管形成。 开关控制信号发生器从第一和第二输出端产生输出电压电平彼此不同并在第一和第二电平之间转换的输出信号，但是在转换到输出信号期间暂时使其具有第一电压电平。

    Image processing apparatus
    27.
    发明授权
    Image processing apparatus 失效

    公开(公告)号：US5926292A

    公开(公告)日：1999-07-20

    申请号：US883155

    申请日：1997-06-26

    申请人： Hisashi Ishikawa ,  Hideo Homma ,  Yoshitake Nagashima ,  Takashi Saito

    发明人： Hisashi Ishikawa ,  Hideo Homma ,  Yoshitake Nagashima ,  Takashi Saito

    IPC分类号： G06T9/00 ,  H04N1/41 ,  H04N1/64 ,  H04N1/40

    CPC分类号： H04N1/41 ,  G06T9/005 ,  H04N1/4105 ,  H04N1/642

    摘要： An image processing apparatus has a memory device for storing pixel image data including both halftone image data such as data of image of a photograph having a gradation and line image data such as data of text containing characters. The storage is conducted on the basis of blocks each having a predetermined number of pixels. The mean information quantity of the halftone image data per pixel stored in the memory means is not greater than the information quantity of the line image data per pixel stored in the memory means. The halftone image data being compressed on the basis of the block. Therefore, both the halftone image data and line image data can be stored in a small memory by using common addresses, without causing any degradation of the image quality.