公开(公告)号：US08786541B2

公开(公告)日：2014-07-22

申请号：US13984754

申请日：2011-12-05

申请人： Akinori Heishi ,  Satoshi Yamanaka ,  Hideki Yoshii

发明人： Akinori Heishi ,  Satoshi Yamanaka ,  Hideki Yoshii

IPC分类号： G09G3/36

CPC分类号： G09G5/10 ,  G09G3/3426 ,  G09G2320/0238 ,  G09G2360/16

摘要： A light emission control device includes a partial region feature quantity detector, an enlarged region feature quantity detector, a whole screen feature quantity detector, and a light emission controller. The partial region feature quantity detector detects a feature quantity of the image as a partial region feature quantity. The enlarged region feature quantity detector defines the partial region of interest and the partial regions neighboring the partial region of interest, and detects a feature quantity of the image of the enlarged region. The whole screen feature quantity detector detects this feature quantity as a whole screen feature quantity. On the basis of the partial region feature quantity and the enlarged region feature quantity pertaining to the partial region of interest, and the whole screen feature quantity, the light emission controller controls the light emission luminance of the light emission unit corresponding to the partial region of interest.

摘要翻译： 发光控制装置包括部分区域特征量检测器，扩大区域特征量检测器，全屏特征量检测器和发光控制器。 部分区域特征量检测器检测图像的特征量作为部分区域特征量。 扩大区域特征量检测器定义感兴趣的部分区域和与感兴趣部分区域相邻的部分区域，并且检测放大区域的图像的特征量。 整个屏幕特征量检测器将该特征量检测器作为整个屏幕特征量检测。 基于部分区域特征量和与感兴趣的部分区域相关的扩大区域特征量和整个屏幕特征量，发光控制器控制对应于部分区域的部分区域的发光单元的发光亮度 利益。

公开(公告)号：US06512339B2

公开(公告)日：2003-01-28

申请号：US09951415

申请日：2001-09-14

申请人： Yoshitomo Nakamura ,  Haruo Shigematsu ,  Akinori Heishi ,  Hironobu Yasui

发明人： Yoshitomo Nakamura ,  Haruo Shigematsu ,  Akinori Heishi ,  Hironobu Yasui

IPC分类号： G09G104

CPC分类号： H04N5/68 ,  H01J29/488 ,  H01J2229/4844 ,  H04N5/20

摘要： In a CRT display device including a CRT (MM tube) having brightness higher than that in the background-art CRT, it is an object of the present invention to improve contrast and prevent conspicuous recognition of noises. A video signal modulation circuit (10) modulates a video signal (9) (first video signal) into a second video signal having a signal level in an area of low gradation level lower than a signal level of the first video signal. A cathode bias voltage source (7) generates a driving voltage on the basis of the second video signal. It is therefore possible to keep the driving voltage in the area of low gradation level low and reduce brightness in the area of low gradation level of a CRT (1). As a result, noises of an image in the area of low gradation level are not conspicuously recognized and a contrast value is increased, resulting in improvement in image quality.

公开(公告)号：US06384536B1

公开(公告)日：2002-05-07

申请号：US09776627

申请日：2001-02-06

申请人： Hironobu Yasui ,  Akinori Heishi

发明人： Hironobu Yasui ,  Akinori Heishi

IPC分类号： H01J2952

CPC分类号： H01J29/98

摘要： A CRT display apparatus including a CRT having an electron gun is disclosed. The electron gun includes a cathode, a G1 electrode, a G2 electrode, and a G3 electrode disposed in that order for drawing electrons from the cathode. The electron gun further includes a modulating Gm electrode disposed between the G2 electrode and the G3 electrode. The CRT display apparatus is provided with a current measuring circuit measuring a current flowing through the Gm electrode and a controller for controlling a value of a voltage applied to the Gm electrode according to a value of the current measured by the current measuring circuit for the purpose of preventing the electron beam flowing from the electron gun to the screen of the CRT from becoming excessive.

摘要翻译： 公开了一种包括具有电子枪的CRT的CRT显示装置。 电子枪包括阴极，G1电极，G2电极和G3电极，其按照从阴极吸取电子的顺序设置。 电子枪还包括设置在G2电极和G3电极之间的调制Gm电极。 CRT显示装置设置有测量流过Gm电极的电流的电流测量电路和用于根据由电流测量电路测量的电流的值来控制施加到Gm电极的电压的值的控制器 防止从电子枪流向CRT的屏幕的电子束变得过大。

公开(公告)号：US06479952B2

公开(公告)日：2002-11-12

申请号：US09818782

申请日：2001-03-28

申请人： Hironobu Yasui ,  Akinori Heishi

发明人： Hironobu Yasui ,  Akinori Heishi

IPC分类号： G09G104

CPC分类号： H01J29/98 ,  H01J29/52 ,  H04N5/59

摘要： A display apparatus includes a CRT, the CRT including an electron gun having a cathode, a G1 electrode, a G2 electrode, and a G3 electrode disposed in that order to draw electrons from the cathode. The electron gun further has a modulating Gm electrode disposed between the G2 and G3 electrodes. The display apparatus is provided with a controller for controlling a value of a voltage applied to the Gm electrode to adjust brightness of a picture on a screen of the CRT.

摘要翻译： 显示装置包括CRT，CRT包括具有阴极的电子枪，G1电极，G2电极和G3电极，以便从阴极引出电子。 电子枪还具有设置在G2和G3电极之间的调制Gm电极。 显示装置设置有用于控制施加到Gm电极的电压的值以控制CRT的屏幕上的图像的亮度的控制器。

公开(公告)号：US06366035B1

公开(公告)日：2002-04-02

申请号：US09775633

申请日：2001-02-05

申请人： Akinori Heishi ,  Hironobu Yasui

发明人： Akinori Heishi ,  Hironobu Yasui

IPC分类号： G09G104

CPC分类号： H04N5/68 ,  H04N3/185

摘要： A CRT display apparatus is disclosed. The CRT display apparatus includes a CRT having an electron gun whose electrodes for controlling an electron beam are applied with voltages from their respective voltage sources specifically designed to supply an electrode current, and is capable of automatically ceasing a discharge that has occurred under fault conditions between any electrode within the electron gun and the cathode or an anode of the CRT.

摘要翻译： 公开了CRT显示装置。 CRT显示装置包括具有电子枪的CRT，其电极用于控制电子束，其电压来自其各自的电压源，专门设计用于提供电极电流，并且能够自动停止在故障条件下发生的放电 电子枪内的任何电极和CRT的阴极或阳极。

公开(公告)号：US06563276B2

公开(公告)日：2003-05-13

申请号：US09989418

申请日：2001-11-21

申请人： Akinori Heishi ,  Hironobu Yasui ,  Tetsuya Shimizu

发明人： Akinori Heishi ,  Hironobu Yasui ,  Tetsuya Shimizu

IPC分类号： H01J2952

CPC分类号： G09G1/28 ,  H04N9/645

摘要： A CRT display apparatus capable of displaying images in high contrast and high brightness without causing noises and halftone-reproduction degradation within dark areas is disclosed. The apparatus includes a circuit for generating an R-control signal, a G-control signal and a B-control signal by removing, from each of the R-, G- and B-video signals, portions which are below a predetermined level in amplitude, an amplification circuit for inverting and amplifying the R-, G- and B-control signals, and a selection circuit for selecting, for each of the three G1 electrodes, either a corresponding one of the R-, G- and B-control signals inverted and amplified by the amplification circuit or a potential of a predetermined value in accordance with an instruction from an outside, and applying each of the three G1 electrodes with a selected one of the corresponding one of the R-, G- and B-control signals and the potential.

摘要翻译： 公开了一种能够以高对比度和高亮度显示图像而不会在黑暗区域内产生噪声和半色调再现劣化的CRT显示装置。 该装置包括用于通过从R，G和B视频信号中的每一个去除低于预定水平的部分来产生R控制信号，G控制信号和B控制信号的电路 用于反转和放大R，G和B控制信号的放大电路，以及用于对于三个G1电极中的每一个选择R，G和B控制信号中的相应一个的选择电路， 根据来自外部的指令，由放大电路反相放大的控制信号或预定值的电位，并将三个G1电极中的每一个与R，G和B中相应的一个对应 控制信号和潜力。

公开(公告)号：US06495978B2

公开(公告)日：2002-12-17

申请号：US09909830

申请日：2001-07-23

申请人： Hironobu Yasui ,  Akinori Heishi

发明人： Hironobu Yasui ,  Akinori Heishi

IPC分类号： G09G104

CPC分类号： H01J29/503

摘要： A cutoff adjustment method of a CRT using a Hi-Gm tube is proposed as well as a problem that luminance of a display screen is changed by a fluctuation of a Gm voltage to be applied to a Gm electrode in relation to fluctuations of currents flowing into the Gm electrode and a G2 electrode is solved. On this occasion, the cutoff adjustment method of the Hi-Gm tube sets such that a Gm voltage value of a Gm electrode voltage source and a black level bias voltage value applied to a cathode for displaying a black level agree with each other. Further, the CRT display device having the Hi-Gm tube is constituted such that it is provided with a voltage detection circuit in an output side of the Gm electrode voltage source for measuring a fluctuation of an output voltage from the Gm electrode voltage source to keep the Gm voltage constant by a feedback from the voltage detection circuit.

摘要翻译： 提出了使用Hi-Gm管的CRT的截止调整方法以及显示屏的亮度随着施加到Gm电极的Gm电压的波动相对于流入Gm电极的电流的波动而改变的问题 解决了Gm电极和G2电极。 在这种情况下，Hi-Gm管的截止调整方法设置为使得施加到用于显示黑色电平的阴极的Gm电极电压源的Gm电压值和黑色电平偏置电压值彼此一致。 此外，具有Hi-Gm管的CRT显示装置构成为在Gm电极电压源的输出侧设置有电压检测电路，用于测量来自Gm电极电压源的输出电压的波动以保持 通过来自电压检测电路的反馈，Gm电压恒定。

公开(公告)号：US20130321491A1

公开(公告)日：2013-12-05

申请号：US13984754

申请日：2011-12-05

申请人： Akinori Heishi ,  Satoshi Yamanaka ,  Hideki Yoshii

发明人： Akinori Heishi ,  Satoshi Yamanaka ,  Hideki Yoshii

IPC分类号： G09G5/10

CPC分类号： G09G5/10 ,  G09G3/3426 ,  G09G2320/0238 ,  G09G2360/16

摘要： A light emission control device includes a partial region feature quantity detector, an enlarged region feature quantity detector, a whole screen feature quantity detector, and a light emission controller. The partial region feature quantity detector detects a feature quantity of the image as a partial region feature quantity. The enlarged region feature quantity detector defines the partial region of interest and the partial regions neighboring the partial region of interest, and detects a feature quantity of the image of the enlarged region. The whole screen feature quantity detector detects this feature quantity as a whole screen feature quantity. On the basis of the partial region feature quantity and the enlarged region feature quantity pertaining to the partial region of interest, and the whole screen feature quantity, the light emission controller controls the light emission luminance of the light emission unit corresponding to the partial region of interest.

摘要翻译： 发光控制装置包括部分区域特征量检测器，扩大区域特征量检测器，全屏特征量检测器和发光控制器。 部分区域特征量检测器检测图像的特征量作为部分区域特征量。 扩大区域特征量检测器定义感兴趣的部分区域和与感兴趣部分区域相邻的部分区域，并且检测放大区域的图像的特征量。 整个屏幕特征量检测器将该特征量检测器作为整个屏幕特征量检测。 基于部分区域特征量和与感兴趣的部分区域相关的扩大区域特征量和整个屏幕特征量，发光控制器控制对应于部分区域的部分区域的发光单元的发光亮度 利益。

公开(公告)号：US06495975B2

公开(公告)日：2002-12-17

申请号：US09758224

申请日：2001-01-12

申请人： Hironobu Yasui ,  Akinori Heishi

发明人： Hironobu Yasui ,  Akinori Heishi

IPC分类号： H01J2970

CPC分类号： H01J29/98 ,  H01J29/52

摘要： A CRT display apparatus including a CRT having an electron gun is disclosed. The electron gun includes a cathode, and a G1 electrode, a G2 electrode and a G3 electrode disposed in that order for drawing electrons from the cathode. The electron gun further includes a modulating electrode disposed between the G2 electrode and the G3 electrode. The CRT display apparatus is provided with a controller for controlling a value of a voltage applied to the modulating electrode in order to suppress or interrupt an electron beam flowing from the cathode to a screen of the CRT.

摘要翻译： 公开了一种包括具有电子枪的CRT的CRT显示装置。 电子枪包括阴极，G1电极，G2电极和G3电极，其按照从阴极吸取电子的顺序设置。 电子枪还包括设置在G2电极和G3电极之间的调制电极。 CRT显示装置设置有用于控制施加到调制电极的电压的值以控制或中断从阴极流向CRT的屏幕的电子束的控制器。

公开(公告)号：US06522090B2

公开(公告)日：2003-02-18

申请号：US09983504

申请日：2001-10-24

申请人： Akinori Heishi ,  Hironobu Yasui

发明人： Akinori Heishi ,  Hironobu Yasui

IPC分类号： H01J2951

CPC分类号： H01J29/503 ,  H01J29/484

摘要： When an interval between a Gm electrode and a cathode is broadened with temperature, a potential change similar to a case that a Gm electrode voltage is lowered is generated. If a cathode voltage is constant, a quantity of electrons which pass is decreased whereupon a screen of a cathode ray tube becomes dark. A Gm electrode voltage control circuit is provided to a Gm electrode voltage source for control an applied voltage to the Gm electrode by time information from a time-measuring circuit such that the change of the interval between the cathode and the Gm electrode is corrected during a period of time between the time the voltage is applied to each electrode of a Hi-Gm tube and the time the change of a size of the interval between the cathode and the Gm electrode is saturated.