公开(公告)号：US07324236B2

公开(公告)日：2008-01-29

申请号：US09772664

申请日：2001-01-30

申请人： Kazuhito Ohashi

发明人： Kazuhito Ohashi

IPC分类号： G06F15/00 ,  H04N1/40

CPC分类号： H04N1/4076

摘要： Image signals output from a linear image sensor which outputs charges accumulated in pixels in the right-side area and charges accumulated in pixels in the left-side area via different channels are subjected to discrepancy correction. First, a gray reference board is scanned by the linear image sensor while changing charging periods, and look up tables for converting signal levels of the respective channels are generated on the basis of signal levels obtained by scanning the gray reference board. A discrepancy correction is realized by converting levels of image signals output from the two terminals using the look up tables.

摘要翻译： 从线性图像传感器输出的图像信号，其输出在右侧区域中以像素累积的电荷，并且通过不同的通道累积在左侧区域中的电荷的电荷进行差异校正。 首先，通过线性图像传感器扫描灰度参考板，同时改变充电周期，并且基于通过扫描灰色参考板获得的信号电平来生成用于转换各个通道的信号电平的查找表。 通过使用查找表转换从两个终端输出的图像信号的电平来实现差异校正。

公开(公告)号：US06225934B1

公开(公告)日：2001-05-01

申请号：US09122445

申请日：1998-07-24

申请人： Kazuhito Ohashi ,  Noriyoshi Chizawa ,  Masafumi Kamei ,  Takashi Sugiura

发明人： Kazuhito Ohashi ,  Noriyoshi Chizawa ,  Masafumi Kamei ,  Takashi Sugiura

IPC分类号： H03M112

CPC分类号： H04N1/56

摘要： This invention provides an image reading method and apparatus which can prevent a large difference from being produced between the color tones of the read image and the original image. A plurality of signals output from an image sensor (101) are A/D-converted into a plurality of digital signals by A/D conversion circuits (105), a predetermined one of the A/D-converted digital signals is compared with a predetermined reference level by a comparator (108), a low-pass filter (109) removes any high-frequency component from the comparison result, and the output from the low-pass filter (109) is controlled to be input to the A/D conversion circuits (105) as a reference voltage for determining the input range of each A/D conversion circuit (105).

摘要翻译： 本发明提供一种可以防止在读取图像的色调和原始图像之间产生较大差异的图像读取方法和装置。 从图像传感器（101）输出的多个信号由A / D转换电路（105）进行A / D转换成多个数字信号，将A / D转换的数字信号中的预定的一个与 通过比较器（108）的预定参考电平，低通滤波器（109）从比较结果中去除任何高频分量，并且控制来自低通滤波器（109）的输出以输入到A / D转换电路（105）作为用于确定每个A / D转换电路（105）的输入范围的参考电压。

公开(公告)号：US06078685A

公开(公告)日：2000-06-20

申请号：US516866

申请日：1995-08-18

申请人： Takashi Kawai ,  Hiroshi Sato ,  Kazuhito Ohashi

发明人： Takashi Kawai ,  Hiroshi Sato ,  Kazuhito Ohashi

IPC分类号： H04N5/369 ,  H04N9/04 ,  G06K9/00

CPC分类号： H04N3/1581 ,  H04N9/045 ,  H04N2209/049

摘要： This invention has as its object to provide an image reading apparatus which can prevent color mixing even when a linear image sensor in which charge transfer units are arranged to sandwich light-receiving units of different colors therebetween is used. In order to achieve the object, the image reading apparatus includes: a linear image sensor which is constituted by a plurality of image line sensors (301, 302, 303) respectively having a plurality of color filters, and transfer units (304-309) for transferring charges from the image line sensors, so that a charge obtained by a light-receiving/storage operation of at least one color image line sensor (302) is transferred to the transfer units (306, 307) via the image line sensor (303) of another color; and a subtraction circuit for subtracting a value obtained by multiplying a charge obtained by the light-receiving/storage operation of the image line sensor (303) of the other color with a correction coefficient from the charge transferred via the image line sensor (303) of the other color.

摘要翻译： 本发明的目的是提供一种能够防止颜色混合的图像读取装置，即使当其中布置电荷转移单元的线性图像传感器夹着它们之间的不同颜色的光接收单元时也是如此。 为了实现该目的，图像读取装置包括：由分别具有多个滤色器的多个图像线传感器（301,302,303）构成的线性图像传感器和转印单元（304-309） 用于从图像线传感器传送电荷，使得通过至少一个彩色图像线传感器（302）的光接收/存储操作获得的电荷经由图像线传感器（302,307）传送到传送单元（306,307） 303）另一种颜色; 以及减法电路，用于从通过图像线传感器（303）传送的电荷中减去通过将由另一种颜色的图像线传感器（303）的光接收/存储操作获得的电荷乘以校正系数而获得的值， 的另一种颜色。

公开(公告)号：US6025933A

公开(公告)日：2000-02-15

申请号：US953844

申请日：1997-10-14

申请人： Kazuhito Ohashi

发明人： Kazuhito Ohashi

IPC分类号： H04N1/19 ,  H04N1/40 ,  H04N1/401 ,  H04N1/407 ,  G03G15/041

CPC分类号： H04N1/40056

摘要： According to an image pickup apparatus of this invention, a light source illuminates an object, an image pickup unit picks up an image of the illuminated object, an amplifier circuit amplifies the output signal for the image pickup unit, and a control unit adjusts the light amount of the light source after setting the maximum gain of the amplifier circuit and controls the image pickup unit to pickup the image of the object. An image pickup operation can be performed by irradiating an object with a minimum amount of light that the circuitry is capable of coping with.

摘要翻译： 根据本发明的图像拾取装置，光源照亮物体，图像拾取单元拾取被照明物体的图像，放大器电路放大用于图像拾取单元的输出信号，并且控制单元调节光 设置放大器电路的最大增益后的光源量，并控制图像拾取单元以拾取对象的图像。 可以通过用电路能够应对的最小量的光照射对象来执行图像拾取操作。

公开(公告)号：US6023595A

公开(公告)日：2000-02-08

申请号：US848616

申请日：1997-04-29

申请人： Takashi Suzuki ,  Shinobu Arimoto ,  Nobuyuki Watanabe ,  Kazuhito Ohashi ,  Akiko Kanno ,  Hiroyuki Tsuji ,  Tetsuya Nakamura ,  Shingo Kitamura ,  Tsunao Honbo ,  Junichi Noguchi

发明人： Takashi Suzuki ,  Shinobu Arimoto ,  Nobuyuki Watanabe ,  Kazuhito Ohashi ,  Akiko Kanno ,  Hiroyuki Tsuji ,  Tetsuya Nakamura ,  Shingo Kitamura ,  Tsunao Honbo ,  Junichi Noguchi

IPC分类号： G03G15/00 ,  H04N1/00 ,  G03G15/02

CPC分类号： H04N1/00079 ,  G03G15/5079 ,  G03G15/55 ,  H04N1/00002 ,  H04N1/00021 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00063

摘要： It is an object to identify a failed portion in a circuit for image processing and notify a service center of the failed portion, thereby enabling the failed circuit to be promptly replaced. Circuit portions of image processing units are constructed on separate substrates. As processing routes of an image signal which is inputted from an A/D converting unit, a route in which the image signal passes through a given circuit portion and a route in which the image signal doesn't pass therethrough are set. Data of a predetermined pattern is processed by those processing routes. The presence or absence of a failure of each circuit portion is discriminated from the processing results. The discrimination result is transmitted to an external apparatus installed in a service center.

摘要翻译： 本发明的目的是识别用于图像处理的电路中的故障部分并通知故障部分的服务中心，从而能够迅速地更换故障电路。 图像处理单元的电路部分被构造在单独的基板上。 作为从A / D转换单元输入的图像信号的处理路线，图像信号通过给定电路部分的路径和图像信号不通过的路径被设置。 预定图案的数据由那些处理路线处理。 每个电路部分的故障的存在或不存在与处理结果相区别。 鉴别结果被传送到安装在服务中心的外部设备。

公开(公告)号：US5995249A

公开(公告)日：1999-11-30

申请号：US902828

申请日：1997-07-30

申请人： Hiroshi Sato ,  Kazuhito Ohashi ,  Takashi Kawai

发明人： Hiroshi Sato ,  Kazuhito Ohashi ,  Takashi Kawai

IPC分类号： H04N1/48 ,  H04N5/372 ,  H04N5/376 ,  H04N5/378 ,  H04N9/04 ,  H04N9/083 ,  H04N1/028 ,  H04N1/03

CPC分类号： H04N9/045 ,  H04N3/1581 ,  H04N2209/049

摘要： An image reading apparatus, having RGB photoreceptors comprising a CCD line sensor, reduces influence of color mixture due to intrapixel transfer in which electric charges from a photoreceptor are transferred via another photoreceptor. The RGB photoreceptors are provided close to each other in parallel, between CCD shift units corresponding to the photoreceptors. The electric charges generated at the G photoreceptor and the B photoreceptor are directly transferred to the CCD shift units. The electric charges generated at the R photoreceptor are transferred to the CCD shift units via the B photoreceptor. That is, the electric charges generated at a photoreceptor having a larger electric charge-generating characteristic are transferred via a photoreceptor having a smaller electric charge-generating characteristic. Further, a transfer direction in which the electric charges are transferred and a subscanning direction in which an original is conveyed upon reading by the photoreceptors are in the same direction. Thus the amount of color mixture can be reduced.

摘要翻译： 具有包含CCD线传感器的RGB感光体的图像读取装置减少了由于来自感光体的电荷经由另一感光体而转移的像素转印的颜色混合的影响。 在相应于感光体的CCD移位单元之间，RGB感光体彼此平行地设置。 在G感光体和B感光体上产生的电荷直接传递到CCD移位单元。 在R感光体上产生的电荷通过B感光体转印到CCD移位单元。 也就是说，在具有较大电荷产生特性的感光体上产生的电荷通过具有较小电荷产生特性的感光体转印。 此外，传送电荷的传送方向和由感光体读取时原稿被传送的副扫描方向处于相同的方向。 因此可以减少混合物的量。

公开(公告)号：US5438558A

公开(公告)日：1995-08-01

申请号：US150588

申请日：1993-11-10

申请人： Kazuhito Ohashi

发明人： Kazuhito Ohashi

IPC分类号： H04N9/793 ,  H04N9/797 ,  H04N9/87 ,  G11B5/09 ,  H04N5/78

CPC分类号： H04N9/793 ,  H04N9/7973 ,  H04N9/87

摘要： An image signal recording and reproducing system for recording an image signal on a recording medium and for reproducing the image signal recorded on the recording medium is arranged to perform a reproducing action on the recording medium on which a sampled image signal formed by sampling the image signal is recorded to sample a reproduced signal reproduced from the recording medium and, in outputting a sampled reproduced signal, the level of the reproduced signal to be sampled is controlled according to the sampling phase of the reproduced signal. This arrangement enables the system to record the image signal on the recording medium and to reproduce the image signal without deteriorating the image signal.

摘要翻译： 用于将图像信号记录在记录介质上并用于再现记录在记录介质上的图像信号的图像信号记录和再现系统被布置成对记录介质执行再现动作，在该记录介质上，通过对图像信号进行采样而形成的采样图像信号 被记录以采样从记录介质再现的再现信号，并且在输出采样的再现信号时，根据再现信号的采样相位来控制要采样的再现信号的电平。 这种布置使得系统能够将图像信号记录在记录介质上并且再现图像信号而不会使图像信号恶化。

公开(公告)号：US5294997A

公开(公告)日：1994-03-15

申请号：US969559

申请日：1992-10-30

申请人： Tokihiko Ogura ,  Kazuhito Ohashi ,  Ryo Fujimoto ,  Takao Sasakura

发明人： Tokihiko Ogura ,  Kazuhito Ohashi ,  Ryo Fujimoto ,  Takao Sasakura

IPC分类号： H04N5/91 ,  G11B20/02 ,  H04N1/21 ,  H04N5/919 ,  H04N5/937 ,  H04N5/956 ,  H04N5/76

CPC分类号： G11B20/10203 ,  G11B20/10425 ,  H04N5/919 ,  H04N5/937 ,  H04N5/956 ,  G11B2220/2512 ,  H04N2201/3214 ,  H04N2201/3215 ,  H04N2201/3226 ,  H04N2201/3277

摘要： An image signal recording and reproducing system which records on a recording medium one picture amount of high definition image signal composed of a plurality of different field image signals and is arranged as follows: in recording the field image signals in different areas on the recording medium respectively, a modulated carrier signal modulated with an information signal other than an image signal is recorded in a state of being multiplexed with one part of the field image signals; and a pilot signal for correcting time base variations is recorded in a state of being multiplexed with the other part of the field image signals. This arrangement enables the system to record and reproduce information other than the image signal and to reproduce an image with a high degree of fineness by accurately correcting time base variations occurring during recording and reproduction.

摘要翻译： 一种图像信号记录和再现系统，其在记录介质上记录由多个不同的场图像信号组成的高分辨率图像信号的一个图像量，并且分配如下：在分别在记录介质上的不同区域中记录场图像信号 以与图像信号不同的信息信号调制的调制载波信号被记录在与一部分场图像信号复用的状态中; 并且在与场图像信号的另一部分多路复用的状态下记录用于校正时基偏差的导频信号。 这种布置使得系统能够记录和再现图像信号以外的信息，并且通过精确地校正在记录和再现期间发生的时基变化，并且以高度的细度再现图像。

公开(公告)号：US5231507A

公开(公告)日：1993-07-27

申请号：US831084

申请日：1992-02-05

申请人： Tsuguhide Sakata ,  Tetsuro Inoue ,  Saburou Nakazato ,  Kazuhito Ohashi ,  Toshihiko Mimura ,  Tokihiko Ogura ,  Yasutomo Suzuki ,  Tomohiko Sasatani ,  Somei Kawasaki

发明人： Tsuguhide Sakata ,  Tetsuro Inoue ,  Saburou Nakazato ,  Kazuhito Ohashi ,  Toshihiko Mimura ,  Tokihiko Ogura ,  Yasutomo Suzuki ,  Tomohiko Sasatani ,  Somei Kawasaki

IPC分类号： H04N9/87 ,  H04N9/896

CPC分类号： H04N9/896 ,  H04N9/87

摘要： An information signal recording/reproducing apparatus includes a recording apparatus and a reproducing apparatus. The recording apparatus is arranged to record on a recording medium an information signal after angle-modulating the signal in such a way as to cause a signal corresponding to a timewise portion of the angle-modulated information signal to be in a given relation to a reference signal. The reproducing apparatus is arranged to angle-demodulate the angle-modulated information signal when it is reproduced from the recording medium, and to perform time base correction on the basis of the signal part of the angle-modulated information signal. Time base variations occurring during the reproduction can be accurately carried out by the arrangement without having any special signal added to the information signal during recording.

摘要翻译： 信息信号记录/再现装置包括记录装置和再现装置。 记录装置被配置为在对信号进行角度调制之后，在信号信号上记录信息信号，以使与角度调制信息信号的时间部分对应的信号与给定的关系成一定关系 信号。 再现装置被配置为当角度调制信息信号从记录介质再现时对其进行角度解调，并且基于角度调制信息信号的信号部分进行时基校正。 在再现期间发生的时基变化可以通过该布置精确地执行，而在记录期间不会对信息信号添加任何特殊信号。