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1. 发明专利

DE4104229A1 Electron beam convergence system - has magnetic fields produced to correct beams vertically and horizontally 未知
公开(公告)号：DE4104229A1
公开(公告)日：1991-08-14
申请号：DE4104229
申请日：1991-02-12
申请人： HITACHI LTD
发明人： SAKURAI SOUICHI , NAKAHARA MASAKI , MIZUTA TAKAHISA , OKUYAMA NOBUTAKA , OSAWA MICHITAKA , NIITSU ICHIRO
IPC分类号： H04N9/28 , H01J29/70 , H04N9/285
摘要： A system for producing magnetic fields to converge electron beams (51,52) in a CRT has at least one convergence yoke (301) with a core (30) with annular outer circumference and a plurality of magnetic poles (311,312,411,412) on the inner circumference which extend to the tube neck (2) to produce a magnetic path there. A vertical correction arrangement has at least a first winding (321,322,421,422) wound around at least one pole (311,312,411,412). A first drive circuit (50) is connected to the winding to create a field to correct convergence errors in the vertical direction of the fluorescent screen. A horizontal correction arrangement has a second winding (331,332,431,432) and a second drive circuit (381). USE/ADVANTAGE - Effectively converges beams to form undistorted electron beam spots.

2. 发明专利

ID19361A 未知
公开(公告)号：ID19361A
公开(公告)日：1998-07-02
申请号：ID973375
申请日：1997-10-07
申请人： HITACHI LTD
发明人： SASAKI TAKASHI , ISHIGAKI MSAJI , MIZUTA TAKAHISA , MASUDA TAKEO
IPC分类号： G09G3/20 , G09G3/291 , G09G3/292 , G09G3/294 , G09G3/298 , G09G3/28
摘要： A plasma display panel driving system having a common X electrode 22 arranged on a front glass substrate 21 driven in common, a independent Y electrode 23 arranged parallel to the common X electrode 22 on the front glass substrate 21 driven independently, an address A electrode arranged perpendicular to the common X electrode and the independent Y electrode on the back glass substrate driven independently, and means for performing at least one electric discharge for equalizing of electric charge particle in a cell in which another electric charge particle is caused beforehand, thereby improving contrast. Erasing and polarization of electric charge particles are performed by the fine line erasing pulse 46a after sustaining period 2c, and a equalizing pulse having a high voltage is supplied to the independent Y electrode to which the last fine line erasing pulse 46a or 86a is supplied, and a regulating pulse 40 is supplied to the common X electrode after supplying of the equalizing pulse. Further, a field bloc having plurality of sub-fields are provided, and a full writing electric discharge and a fine line erasing electric discharge are performed in the first sub-field of each field block for reducing the number of electric discharging.

3. 发明专利

DE4104229C2 未知
公开(公告)号：DE4104229C2
公开(公告)日：1997-01-09
申请号：DE4104229
申请日：1991-02-12
申请人： HITACHI LTD
发明人： SAKURAI SOUICHI , NAKAHARA MASAKI , MIZUTA TAKAHISA , OKUYAMA NOBUTAKA , OSAWA MICHITAKA , NIITSU ICHIRO
IPC分类号： H04N9/28 , H01J29/70 , H04N9/285 , H01J29/51

4. 发明专利

SG64446A1 Plasma display driving apparatus of plasma display panel and driving method thereof 未知
公开(公告)号：SG64446A1
公开(公告)日：1999-04-27
申请号：SG1997003480
申请日：1997-09-22
申请人： HITACHI LTD
发明人： SASAKI TAKASHI , ISHIGAKI MASAJI , MIZUTA TAKAHISA , MASUDA TAKEO
IPC分类号： G09G3/20 , G09G3/291 , G09G3/292 , G09G3/294 , G09G3/298 , G09G3/28
摘要： A plasma display panel driving system having a common X electrode 22 arranged on a front glass substrate 21 driven in common, a independent Y electrode 23 arranged parallel to the common X electrode 22 on the front glass substrate 21 driven independently, an address A electrode arranged perpendicular to the common X electrode and the independent Y electrode on the back glass substrate driven independently, and means for performing at least one electric discharge for equalizing of electric charge particle in a cell in which another electric charge particle is caused beforehand, thereby improving contrast. Erasing and polarization of electric charge particles are performed by the fine line erasing pulse 46a after sustaining period 2c, and a equalizing pulse having a high voltage is supplied to the independent Y electrode to which the last fine line erasing pulse 46a or 86a is supplied, and a regulating pulse 40 is supplied to the common X electrode after supplying of the equalizing pulse. Further, a field bloc having plurality of sub-fields are provided, and a full writing electric discharge and a fine line erasing electric discharge are performed in the first sub-field of each field block for reducing the number of electric discharging.

5. 发明专利

JP2009151345A Method and device for driving plasma display 有权
标题翻译：用于驱动等离子体显示的方法和装置
公开(公告)号：JP2009151345A
公开(公告)日：2009-07-09
申请号：JP2009095532
申请日：2009-04-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKA KAZUTAKA , OSAWA MICHITAKA , OTAKA HIROSHI , MIZUTA TAKAHISA , MASUDA TAKEO
IPC分类号： G09G3/20 , G09G3/288 , G09G3/291 , G09G3/292 , G09G3/298
摘要： PROBLEM TO BE SOLVED: To provide a device for driving a plasma display capable of displaying a high image quality picture, by stably driving a display panel without a malfunction even if an interval between discharge cells is narrowed. SOLUTION: A detecting circuit 4 detects the light emitting pixel ratio of one image screen from R, G, B digital data from A/D conversion circuits 1, 2 and 3 and inputs the ratio into a control pulse power source 5 as a signal Vcont. The power source 5 lowers subfield reset voltage in an image of low ratio in response to the light emitting pixel ratio, and heightens the subfield reset voltage in an image of high ratio. A signal processing circuit 7 performs processing required for display to R, G, B digital signals from the A/D conversion circuits 1, 2 and 3. A driving circuit 8 inserts a control pulse or the like required for the display into the signal from the processing circuit 7 from the power source 5 to convert it into voltage for turning on a plasma display panel 9. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：即使放电单元之间的间隔变窄，也可以通过稳定地驱动显示面板而不产生故障来提供用于驱动能够显示高图像质量图像的等离子体显示器的装置。解决方案：检测电路4从A / D转换电路1,2和3的R，G，B数字数据中检测一个图像屏幕的发光像素比，并将该比率输入到控制脉冲电源5中作为信号Vcont 电源5响应于发光像素比降低低比例图像中的子场复位电压，并且以高比率的图像提高子场复位电压。信号处理电路7对来自A / D转换电路1,2和3的R，G，B数字信号进行显示所需的处理。驱动电路8将显示所需的控制脉冲等插入到来自来自电源5的处理电路7将其转换成用于打开等离子体显示面板9的电压。版权所有：（C）2009，JPO＆INPIT

6. 发明专利

JPH11219150A AC TYPE PLASMA DISPLAY PANEL DRIVING METHOD 失效
公开(公告)号：JPH11219150A
公开(公告)日：1999-08-10
申请号：JP2171598
申请日：1998-02-03
申请人： HITACHI LTD
发明人： YOKOYAMA ATSUSHI , ISHIGAKI MASAHARU , SASAKI TAKASHI , MIZUTA TAKAHISA
IPC分类号： G09G3/20 , G09G3/288 , G09G3/291 , G09G3/294 , G09G3/298 , G09G3/28
摘要： PROBLEM TO BE SOLVED: To continue discharge while generating self-discharge so as to increase light emission frequency to the applied pulse number by storing charge ionized by first discharge generated by the rise of voltage, onto a dielectric layer, generating second discharge in the case of stopping current application, and applying voltage to the other electrode before generated space charge is neutralized and eliminated, to discharge. SOLUTION: When first sustained pulse 58 is applied to a Y-electrode, effective voltage obtained by adding discharge maintaining voltage V1 to potential difference of charge stored in a dielectric is generated between X-, Y-electrodes, and when the effective voltage becomes discharge start voltage V2 or more, discharge is generated. Charge generating space by discharge during a current flowing period t1 is drawn onto the dielectric to store charge. In a current stop period t2, the effective voltage becomes discharge start voltage V2 or more, so that self-discharge is generated, and stored charge is extinct, but when voltage is applied in the state of charge remaining in space, discharge can be performed even when the effective voltage is the discharge start voltage V2 or less.

7. 发明专利

JPH1165517A DRIVE METHOD FOR PLASMA DISPLAY PANEL 失效
公开(公告)号：JPH1165517A
公开(公告)日：1999-03-09
申请号：JP22266597
申请日：1997-08-19
申请人： HITACHI LTD
发明人： SASAKI TAKASHI , MIZUTA TAKAHISA , KIMURA YUICHIRO , OTAKA HIROSHI , ISHIGAKI MASAHARU
IPC分类号： G09G3/20 , G09G3/28 , G09G3/291 , G09G3/292 , G09G3/293 , G09G3/294
摘要： PROBLEM TO BE SOLVED: To improve gradation linearity by counting all numbers of times of discharging emission as the discharge for multilevel display, except the resetting discharge of performing a whole surface simultaneously. SOLUTION: A waveform 10 is a part of driving waveforms applied on an X-electrode in a first to third subfields, waveforms 11, 12 are parts of driving waveforms applied on, e.g., a first and second Y1, Y2 of Y electrode and a waveform 13 is a part of driving waveforms applied on one of address electrodes. A waveform 14 shows the timing of discharge. In this case, a selecting reset pulse is set to be a higher voltage than a discharge start voltage. By counting the number of times of discharges except a write discharge 60 and an erasure discharge 61 in all cells in the first subfield as the multilevel display of a selected cell in each subfield and making them multiples of a factorial of two, a linear luminance change from a zeroth level, i.e., a black level to 255th level is obtained.

8. 发明专利

JPH10228257A METHOD AND DEVICE FOR DRIVING PLASMA DISPLAY PANEL AND PLASMA DISPLAY USING THEM 失效
公开(公告)号：JPH10228257A
公开(公告)日：1998-08-25
申请号：JP27287897
申请日：1997-10-06
申请人： HITACHI LTD
发明人： SASAKI TAKASHI , ISHIGAKI MASAHARU , MIZUTA TAKAHISA , MASUDA TAKEO
IPC分类号： G09G3/20 , G09G3/28 , G09G3/288 , G09G3/291 , G09G3/292 , G09G3/293 , G09G3/294 , G09G3/298
摘要： PROBLEM TO BE SOLVED: To eliminate a whole surface erase discharge, to also eliminate a whole surface write-in discharge and to improve contrast by discharging only in a cell discharging just before it for nearly equalizing states of charged particles of respective cells and applying a voltage without accompanying a discharge. SOLUTION: This panel is provided with commonly drivable common X electrodes 22 arranged, on a translucent substrate 21, independently drivable Y electrodes 23 arranged parallel to the electrodes 22 and independently drivable address A electrodes 29 arranged on another substrate 28 and orthogonally intersecting with the electrodes 22, 23. In such a constitution, for nearly equalizing the states of the charged particles of respective cells, at least once the discharge is performed only in the cell discharging just before it, and the voltage without accompanying the discharge is applied. That is, even when a discharging voltage is applied to the whole cells, the discharge is performed only in the cell that a sustaining discharge is performed, and the voltage without accompanying the discharge is useful for equalizing the states of the charged particles only in the cells that the discharge is performed.

9. 发明专利

JPH10208648A PLASMA DISPLAY DEVICE 失效
公开(公告)号：JPH10208648A
公开(公告)日：1998-08-07
申请号：JP1500497
申请日：1997-01-29
申请人： HITACHI LTD
发明人： SUZUKI KEIZO , MIZUTA TAKAHISA , ISHIGAKI MASAHARU
IPC分类号： H01J11/12 , H01J11/24 , H01J11/26 , H01J11/36 , H01J11/42 , H01J11/50 , H01J17/20 , H01J11/02
摘要： PROBLEM TO BE SOLVED: To reduce erroneous discharge in a cell adjacent to a cell subjected to discharge so as to improve the luminous efficiency of a PDP by allowing at least one part of the constitutional element of gas for generating a plasma to include the gas generating negative ions. SOLUTION: When recording discharge is carried out firstly in the left side cell formed by X electrode 22-1 and Y electrode 23-1 and ions move onto the A electrode 29 of the left side cell and electrically charged positively, and then if recording discharge is carried out in the right side cell formed by X electrode 22-2, Y electrode 23-2, any positive charging on the left side A electrode 29 is eliminated by movement of excessive electrons and recorded information can be possibly erased. As a countermeasure therefore, gases O2 , N2 , etc., are added to other rare gases Ne, Xe so as to convert excessive electrons to negative ions, so that unnecessary migration of electrons to adjacent cells can be restricted, and written information can be prevented from being erased.

10. 发明专利

JPH08287843A DEFLECTION YOKE 失效
公开(公告)号：JPH08287843A
公开(公告)日：1996-11-01
申请号：JP8791195
申请日：1995-04-13
申请人： HITACHI LTD , HITACHI MEDIA ELECTRON KK
发明人： MIZUTA TAKAHISA , JITSUKATA HIROSHI , SAKURAI SOICHI , SATO YOSHIO , TAKEYAMA ATSUSHI
IPC分类号： H01J29/76
摘要： PURPOSE: To independently improve graphic distortion on the periphery of a display screen of a cathode-ray tube by laying the specific number of coils in the vicinity of a trumpet-shaped opening side end part of a deflection yoke. CONSTITUTION: In a deflection yoke which is used by being installed on a cathode-ray tube for a display and has a trumpet-shaped opening part, four or more graphic distortion correcting coils 2 are laid in the vicinity of a trumpet- shaped opening side end part of the deflection yoke 1, and the central axis of the coils 2 is set so as to become the tube axis direction of the cathode-ray tube for a display. Therefore, graphic distortion displayed on a display screen surface of the cathode-ray tube can be independently improved on the periphery of a display screen of the cathode-ray tube without adding a permanent magnet or the like.

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