公开(公告)号：US20090262259A1

公开(公告)日：2009-10-22

申请号：US12428281

申请日：2009-04-22

Applicant: Hiroshi AOKI ,  Ryo Hasegawa ,  Takaaki Matono

Inventor： Hiroshi AOKI ,  Ryo Hasegawa ,  Takaaki Matono

IPC: H04N9/12

CPC classification number: G09G3/2096 ,  G09G3/20 ,  G09G2320/0238 ,  G09G2320/066 ,  G09G2320/0666 ,  G09G2360/16 ,  H04N5/20 ,  H04N5/57 ,  H04N5/70 ,  H04N21/4318 ,  H04N21/44008

Abstract: With the aim of offering a video display technique by which stable and high contrast video images are reproduced, contrast adjusting circuitry is constructed. The contrast adjusting circuitry detects a maximum picture level (MPL) and an average picture level (APL) of analog-to-digital converted luminance signals for a predetermined period, determines one of the predefined luminance regions within which the MPL falls and one of the predefined luminance regions within which the APL falls, and, based on the thus determined luminance regions of both MPL and APL, carries out a contrast adjustment of video images by changing the gain of luminance signals and color depth correction by changing the gain of color signals.By means of the illuminating optics and color synthesis optics of a projector using three video display elements, alleviating color heterogeneity and uneven luminance and offering high contrast images are achieved at reduced cost, and the convergence drift of an enlarged image displayed on the screen can be alleviated.

Abstract translation: 为了提供再现稳定和高对比度视频图像的视频显示技术，构建了对比度调整电路。 对比度调整电路在预定时间内检测模数转换亮度信号的最大图像电平（MPL）和平均图像电平（APL），确定MPL下降的预定亮度区域中的一个， APL下降的预定亮度区域，并且基于这样确定的MPL和APL的亮度区域，通过改变亮度信号的增益和通过改变颜色信号的增益来改变色彩深度校正来执行视频图像的对比度调整 。 通过使用三个视频显示元件的投影仪的照明光学元件和颜色合成光学元件，以降低成本实现减轻颜色异质性和不均匀亮度并提供高对比度图像，并且可以在屏幕上显示的放大图像的会聚漂移 缓解

公开(公告)号：US20090262245A1

公开(公告)日：2009-10-22

申请号：US12428246

申请日：2009-04-22

Applicant: Hiroshi Aoki ,  Ryo Hasegawa ,  Takaaki Matono

Inventor： Hiroshi Aoki ,  Ryo Hasegawa ,  Takaaki Matono

IPC: H04N5/57

CPC classification number: G09G3/2096 ,  G09G3/20 ,  G09G2320/0238 ,  G09G2320/066 ,  G09G2320/0666 ,  G09G2360/16 ,  H04N5/20 ,  H04N5/57 ,  H04N5/70 ,  H04N21/4318 ,  H04N21/44008

Abstract: With the aim of offering a video display technique by which stable and high contrast video images are reproduced, contrast adjusting circuitry is constructed. The contrast adjusting circuitry detects a maximum picture level (MPL) and an average picture level (APL) of analog-to-digital converted luminance signals for a predetermined period, determines one of the predefined luminance regions within which the MPL falls and one of the predefined luminance regions within which the APL falls, and, based on the thus determined luminance regions of both MPL and APL, carries out a contrast adjustment of video images by changing the gain of luminance signals and color depth correction by changing the gain of color signals.By means of the illuminating optics and color synthesis optics of a projector using three video display elements, alleviating color heterogeneity and uneven luminance and offering high contrast images are achieved at reduced cost, and the convergence drift of an enlarged image displayed on the screen can be alleviated.

公开(公告)号：US07430021B2

公开(公告)日：2008-09-30

申请号：US11061826

申请日：2005-02-22

Applicant: Masahiro Nako ,  Yasutaka Tsuru ,  Ryo Hasegawa ,  Katsunobu Kimura ,  Hiroshi Aoki

Inventor： Masahiro Nako ,  Yasutaka Tsuru ,  Ryo Hasegawa ,  Katsunobu Kimura ,  Hiroshi Aoki

IPC: H04N5/208

CPC classification number: H04N5/208

Abstract: A picture quality correction circuit is provided which performs contour correction by grasping features of an input video signal accurately. The correction circuit has a filter circuit for extracting contour components in an inputted video signal, a contour component nonlinear processor for changing amplitudes of the contour components extracted by the filter circuit, an adder for adding outputs of the contour component nonlinear processor and the input video signal, a histogram detection circuit for detecting a histogram of the contour components extracted by the filter circuit, and a control circuit for controlling contour emphasis quantities for the contour component nonlinear processor in accordance with the results of detection by the histogram detection circuit.

Abstract translation: 提供了通过精确地掌握输入视频信号的特征来执行轮廓校正的图像质量校正电路。 校正电路具有用于提取输入视频信号中的轮廓分量的滤波器电路，用于改变由滤波电路提取的轮廓成分的幅度的轮廓分量非线性处理器，用于将轮廓分量非线性处理器和输入视频的输出相加的加法器 信号，用于检测由滤波器电路提取的轮廓分量的直方图的直方图检测电路，以及根据直方图检测电路的检测结果来控制轮廓分量非线性处理器的轮廓强调量的控制电路。

公开(公告)号：US20060038760A1

公开(公告)日：2006-02-23

申请号：US11258994

申请日：2005-10-27

Applicant: Hiroshi Aoki ,  Ryo Hasegawa ,  Takaaki Matono

Inventor： Hiroshi Aoki ,  Ryo Hasegawa ,  Takaaki Matono

IPC: G09G3/36

CPC classification number: G09G3/2096 ,  G09G3/20 ,  G09G2320/0238 ,  G09G2320/066 ,  G09G2320/0666 ,  G09G2360/16 ,  H04N5/20 ,  H04N5/57 ,  H04N5/70 ,  H04N21/4318 ,  H04N21/44008

Abstract: With the aim of offering a video display technique by which stable and high contrast video images are reproduced, contrast adjusting circuitry is constructed. The contrast adjusting circuitry detects a maximum picture level (MPL) and an average picture level (APL) of analog-to-digital converted luminance signals for a predetermined period, determines one of the predefined luminance regions within which the MPL falls and one of the predefined luminance regions within which the APL falls, and, based on the thus determined luminance regions of both MPL and APL, carries out a contrast adjustment of video images by changing the gain of luminance signals and color depth correction by changing the gain of color signals.

公开(公告)号：US09720364B2

公开(公告)日：2017-08-01

申请号：US14966398

申请日：2015-12-11

Applicant: Seiichi Kogure ,  Naohiro Kumagai ,  Junpei Fujita ,  Kazuki Yogosawa ,  Tatsuya Ohsugi ,  Kenji Sugiura ,  Yuuji Wada ,  Takehide Mizutani ,  Ryo Hasegawa

Inventor： Seiichi Kogure ,  Naohiro Kumagai ,  Junpei Fujita ,  Kazuki Yogosawa ,  Tatsuya Ohsugi ,  Kenji Sugiura ,  Yuuji Wada ,  Takehide Mizutani ,  Ryo Hasegawa

IPC: G03G15/00 ,  G03G15/16

CPC classification number: G03G15/6529 ,  G03G15/1605 ,  G03G15/6558 ,  G03G2215/0129

Abstract: An image forming apparatus includes an image bearer having an image bearing face to bear an image thereon; a transferer disposed opposing the image bearer, to transfer the image from the image bearing face onto a recording medium at a transfer section between the transferer and the image bearer; a first guide disposed upstream from the transfer section in a direction of delivery of the recording medium, to guide the recording medium to the transfer section; and a second guide upstream from the first guide and spaced away from the first guide, to guide the recording medium to the transfer section. Each of the first guide and the second guide extends in a lateral direction perpendicular to the direction of delivery. A leading end of the second guide in the direction of delivery is inclined from one end to the other end of the second guide in the lateral direction.

公开(公告)号：US20150346651A1

公开(公告)日：2015-12-03

申请号：US14712307

申请日：2015-05-14

Applicant: Haruki NAGATA ,  Ryo HASEGAWA ,  Naoto KOCHI ,  Atsushi NAGATA ,  Takahiro KONISHI

Inventor： Haruki NAGATA ,  Ryo HASEGAWA ,  Naoto KOCHI ,  Atsushi NAGATA ,  Takahiro KONISHI

IPC: G03G15/16

CPC classification number: G03G15/1665 ,  G03G15/1605 ,  G03G2215/00738 ,  G03G2215/0193

Abstract: An image forming apparatus includes an image bearer, a nip forming device, a contact-and-separation device, a thickness information retrieving device, and a controller. The contact-and-separation device moves the image bearer and the nip forming device to contact and separate from each other. The controller controls the contact-and-separation device based on information on a thickness of a recording medium obtained by the thickness information retrieving device such that in a case in which a thickness of a preceding recording medium and a thickness of a successive recording medium are different in continuous printing in which a plurality of recording media is printed out continuously, the contact-and-separation device adjusts a space between the image bearer and the nip forming device when the preceding recording medium exits the transfer nip to a preset size corresponding to the thickness of the successive recording medium that enters the transfer nip.

Abstract translation: 图像形成装置包括图像载体，压区形成装置，接触 - 分离装置，厚度信息检索装置和控制器。 接触分离装置使图像载体和辊隙形成装置相互接触和分离。 控制器基于由厚度信息检索装置获得的记录介质的厚度的信息来控制接触 - 分离装置，使得在先前记录介质的厚度和连续记录介质的厚度为 在连续打印多个记录介质的连续打印不同的情况下，当前一记录介质离开传送辊隙时，接触 - 分离装置调整图像载体和辊隙形成装置之间的空间，使其对应于 进入转印辊隙的连续记录介质的厚度。

公开(公告)号：US07898557B2

公开(公告)日：2011-03-01

申请号：US12187922

申请日：2008-08-07

Applicant: Hiroshi Aoki ,  Ryo Hasegawa

Inventor： Hiroshi Aoki ,  Ryo Hasegawa

IPC: G09G5/10 ,  H04N5/68

CPC classification number: G09G5/10 ,  G09G3/3611 ,  G09G2320/0626 ,  G09G2320/066

Abstract: A system provides an image displaying technique that provides stable high contrast even in an area having high brightness. Based on information about an average brightness level of a digital luminance signal, black-correction processing which decreases a brightness level by offsetting the brightness level to the minus side, and increase processing which increases a contrast gain within a dynamic range, are performed for an analog luminance signal or a digital luminance signal, enabling improvement in contrast even where brightness is intense.

Abstract translation: 系统提供即使在具有高亮度的区域中也提供稳定的高对比度的图像显示技术。 基于关于数字亮度信号的平均亮度水平的信息，通过将亮度水平偏移到负侧来降低亮度水平的黑色校正处理以及增加动态范围内的对比度增益的增加处理被执行 模拟亮度信号或数字亮度信号，即使在亮度强烈的情况下也能够提供对比度。

公开(公告)号：US20090153596A1

公开(公告)日：2009-06-18

申请号：US12361463

申请日：2009-01-28

Applicant: Hiroshi AOKI ,  Ryo HASEGAWA

Inventor： Hiroshi AOKI ,  Ryo HASEGAWA

IPC: G09G5/10

CPC classification number: G09G5/10 ,  G09G3/3611 ,  G09G2320/0626 ,  G09G2320/066

Abstract: A system provides an image displaying technique that provides stable high contrast even in an area having high brightness. Based on information about an average brightness level of a digital luminance signal, black-correction processing which decreases a brightness level by offsetting the brightness level to the minus side, and increase processing which increases a contrast gain within a dynamic range, are performed for an analog luminance signal or a digital luminance signal, enabling improvement in contrast even where brightness is intense.

Abstract translation: 系统提供即使在具有高亮度的区域中也提供稳定的高对比度的图像显示技术。 基于关于数字亮度信号的平均亮度水平的信息，通过将亮度水平偏移到负侧来降低亮度水平的黑色校正处理以及增加动态范围内的对比度增益的增加处理被执行 模拟亮度信号或数字亮度信号，即使在亮度强烈的情况下也能够提供对比度。

公开(公告)号：US20090059083A1

公开(公告)日：2009-03-05

申请号：US12187922

申请日：2008-08-07

Applicant: Hiroshi Aoki ,  Ryo Hasegawa

Inventor： Hiroshi Aoki ,  Ryo Hasegawa

IPC: H04N5/202 ,  H04N5/66

CPC classification number: G09G5/10 ,  G09G3/3611 ,  G09G2320/0626 ,  G09G2320/066

Abstract: A system provides an image displaying technique that provides stable high contrast even in an area having high brightness. Based on information about an average brightness level of a digital luminance signal, black-correction processing which decreases a brightness level by offsetting the brightness level to the minus side, and increase processing which increases a contrast gain within a dynamic range, are performed for an analog luminance signal or a digital luminance signal, enabling improvement in contrast even where brightness is intense.

公开(公告)号：US20050190300A1

公开(公告)日：2005-09-01

申请号：US11040563

申请日：2005-01-20

Applicant: Hiroshi Aoki ,  Ryo Hasegawa

Inventor： Hiroshi Aoki ,  Ryo Hasegawa

IPC: G09G3/36 ,  G09G3/20 ,  G09G5/00 ,  H04N5/208 ,  H04N5/21 ,  H04N5/57 ,  H04N5/66 ,  H04N5/213

CPC classification number: G09G3/2003 ,  G09G2320/02 ,  G09G2320/0613 ,  G09G2320/066 ,  H04N5/57 ,  H04N21/4318 ,  H04N21/44008

Abstract: Image display method and apparatus are capable of displaying an input image signal in an optical condition on a display screen according to the brightness of the screen image. The image display apparatus for performing a specified process on an input image signal and displaying an image by the image signal on a display unit comprises a controller for adjusting a signal level detecting circuit for detecting brightness levels of an image by the input image signal by controlling the sharpness of an image by the image signal according to a detected signal level in such a way that as the detected signal level rises, the sharpness increases.

Abstract translation: 图像显示方法和装置能够根据屏幕图像的亮度在显示屏幕上以光学状态显示输入图像信号。 用于对输入图像信号执行指定处理并通过图像信号在显示单元上显示图像的图像显示装置包括：控制器，用于通过控制来调整用于通过输入图像信号检测图像的亮度水平的信号电平检测电路; 图像信号根据检测信号电平的图像清晰度，使得随着检测信号电平升高，锐度增加。