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21. 发明专利

JPH1165513A DRIVE METHOD OF PLASMA DISPLAY PANEL 失效
公开(公告)号：JPH1165513A
公开(公告)日：1999-03-09
申请号：JP22376197
申请日：1997-08-20
申请人： HITACHI LTD
发明人： SASAKI TAKASHI , ISHIGAKI MASAHARU , MIZUTA TAKAHISA , MASUDA TAKEO
IPC分类号： G09G3/291 , G09G3/20 , G09G3/292 , G09G3/293 , G09G3/294 , G09G3/28
摘要： PROBLEM TO BE SOLVED: To realize a drive method of a plasma display panel capable of ensuring an address discharge and enhancing image quality. SOLUTION: Negative by charged particles are collected at Y-electrodes by impressing a Y-regulating pulse 56 having a possitive polarity on Y-electrodes before the charged particles completely are discharged (within 2-20 μsec after the discharging), while discharging by a reset pulse 51 only with respect to a cell on which a sustaining discharge is generated in an immediately preceding subfield and charged particles are stored. Next, positively charged particles are collected on an address electrode by impressing a regulating pulse 52 having a positive polarity on an X-electrode. Thus, the difference between potentials of Y-electrodes by scanning pulses 59a, 59b which have negative polarity to be applied on the Y-electrodes and the potential of the address electrode by an address pulse 63 having a positive polarity to be impressed on the address electrode becomes large, and the address discharge is surely performed.

22. 发明专利

JPH07254377A DEFLECTION YOKE 失效
公开(公告)号：JPH07254377A
公开(公告)日：1995-10-03
申请号：JP4227794
申请日：1994-03-14
申请人： HITACHI LTD , HITACHI MEDIA ELECTRON KK
发明人： MIZUTA TAKAHISA , FUKUMA KOJI , JITSUKATA HIROSHI , SAKURAI SOICHI , YOSHIOKA HIROSHI , OBARA MASAO , OBARA YOSHIHIRO
IPC分类号： H01J29/76
摘要： PURPOSE:To reduce noise generated by a magnetic part when a deflection yoke is driven by a deflection current by making at least one of magnetic parts of a magnetic material having a predetermined saturated magnetostriction. CONSTITUTION:A magnetic piece 1 is disposed in a partition wall (separator) 2 for insulating a horizontal deflection coil 4 from a vertical deflection coil 5. A deflection yoke 10 comprises the piece 1, the separator 2, the horizontal deflection coil 4, the vertical deflection coil 5, a magnetic core 6, and a convergence yoke 7, and is mounted on a cathode-ray tube glass bulb 3. The magnetic part (piece 1) constituting the yoke 10 is made of a magnetic material which satisfies the following inequalities: -5.8/10 , preferably -3.3/10 , wherein lambdasat represents magnetostriction. The piece 1 is disposed in the separator 2 interposed between the coils 4, 5. Consequently, it is possible to reduce noise generated by the yoke 10 in a state driven by a deflection current.

23. 发明专利

JPH06125474A DEFLECTION YOKE AND COLOR CATHODE RAY TUBE PROVIDED WITH THE DEFLECTION YOKE 失效
公开(公告)号：JPH06125474A
公开(公告)日：1994-05-06
申请号：JP27395492
申请日：1992-10-13
申请人： HITACHI LTD , HITACHI MIZUSAWA ELECTRONICS
发明人： NAKAHARA MASAKI , OKUYAMA NORITAKA , SAKURAI SOICHI , MIZUTA TAKAHISA , YOSHIMI ISAO , ABE MASAYUKI , OSAWA MICHITAKA
IPC分类号： H04N3/23
摘要： PURPOSE:To correct convergence of longitudinal lines with high accuracy through excellent workability of connecting a vertical deflection coil and to stably correct mis-convergence of lateral lines against a temperature change. CONSTITUTION:A vertical deflection coil 3 is divided into 1st coils sections 3b, 3c and 2nd coil sections 3a, 3d, and the 1st coil sections 3b, 3c are connected with taps 26, 27. A shunt circuit comprising a resistor 22f, variable resistors 23e, 23d, diodes 24e, 24f and correction coils 7c, 7d, 7e, 7f is connected between the taps 26, 27 and a current supplied to the correction coils is a current shunted from the vertical deflection coil 3. A resistor circuit comprising a resistor 22e and a thermister 16 is connected between the 1st coil sections 3b, 3c.

24. 发明专利

JP2010092075A 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：JP2010092075A
公开(公告)日：2010-04-22
申请号：JP2010012751
申请日：2010-01-25
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 , G09G3/296 , G09G3/298
摘要： PROBLEM TO BE SOLVED: To provide a device for driving a plasma display capable of displaying a high quality image picture by stably driving a display panel without malfunction even if an interval between discharge cells is narrowed. SOLUTION: A detection circuit 4 detects a light emitting pixel ratio of one screen from R, G, B digital data from A/D converter circuits 1, 2 and 3 and inputs it to a control pulse power supply 5 as a signal Vcont. According to the light emitting pixel ratio, the power supply 5 lowers subfield reset voltage in an image of a low ratio, and raises the subfield reset voltage in an image of high ratio. A signal processing circuit 7 performs processing required for display to the R, G, B digital signals from the A/D converter circuits 1, 2 and 3. A drive circuit 8 inserts a control pulse or the like required for the display into the signal from the processing circuit 7 from the power supply 5 and converts it into voltage for turning on a plasma display panel 9. Thus, even if the interval between the discharge cells is narrow, the occurrence of a bright spot or the like on a dark screen is prevented and reset discharge on a bright screen is surely performed, and the panel 9 is stably driven without malfunction. COPYRIGHT: (C)2010,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，提供一种用于驱动能够通过稳定地驱动显示面板而无故障地显示高质量图像图像的等离子体显示器的装置。解决方案：检测电路4检测来自A / D转换器电路1,2和3的R，G，B数字数据的一个屏幕的发光像素比，并将其作为信号输入到控制脉冲电源5 Vcont的。根据发光像素比，电源5降低低比例的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转换器电路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信号从电源5的处理电路7将其转换为等离子体显示面板9的接通电压。因此，即使放电单元之间的间隔窄，在黑屏上出现亮点等并且确保在亮屏幕上进行复位放电，并且面板9被稳定地驱动而没有故障。版权所有（C）2010，JPO＆INPIT

25. 发明专利

JP2000029431A METHOD AND DEVICE FOR DRIVING PLASMA DISPLAY 失效
公开(公告)号：JP2000029431A
公开(公告)日：2000-01-28
申请号：JP20002798
申请日：1998-07-15
申请人： HITACHI LTD
发明人： NAKA KAZUTAKA , OSAWA MICHITAKA , OTAKA HIROSHI , MIZUTA TAKAHISA , MASUDA TAKEO
IPC分类号： G09G3/20 , G09G3/288 , G09G3/291 , G09G3/293 , G09G3/296 , G09G3/298 , G09G3/28
摘要： PROBLEM TO BE SOLVED: To realize a driving device of plasma display in which a display panel is stably driven without a malfunction even though the spacing between discharging cells is made narrower, and a high quality video is displayed. SOLUTION: A detecting circuit 4 detects the light emitting pixel ratio of one screen from R, G and B digital data of A/D converting circuits 1, 2 and 3 and inputs the ratio into a control pulse power supply 5 as a signal Vcont. The power supply 5 reduces the subfield reset voltage to a lower level for the low ratio picture and increases the voltage to a higher level for the high ratio picture in accordance with the light emitting pixel ratio. A signal processing circuit 7 executes the process required for the display against the R, G and B digital signals from the circuits 1, 2 and 3. A driving circuit 8 inserts control pulses, that are required for a display, into the signals from the circuit 7 from the power supply 5 and converts the signals into the voltage to turn on plasma display panel 9. Thus, even though the spacing between discharging cells is made narrower, the generation of bright spots on a dark screen is prevented, a reset discharge is surely executed on a bright screen, no malfunction occurs and the panel 9 is stably driven.

26. 发明专利

JPH11259041A DRIVING METHOD OF PLASMA DISPLAY PANEL 失效
公开(公告)号：JPH11259041A
公开(公告)日：1999-09-24
申请号：JP5830698
申请日：1998-03-10
申请人： HITACHI LTD
发明人： MASUDA TAKEO , ISHIGAKI MASAHARU , SASAKI TAKASHI , MIZUTA TAKAHISA
IPC分类号： G09G3/20 , G09G3/288 , G09G3/291 , G09G3/292 , G09G3/294 , G09G3/296 , G09G3/298 , H01J11/12 , H01J11/14 , H01J11/24 , H01J11/26 , H01J11/36 , H01J11/42 , G09G3/28 , H01J11/00
摘要： PROBLEM TO BE SOLVED: To let all cells satisfactorily execute reset discharge and address discharge by decreasing discharge current in all reset discharging. SOLUTION: According to order of an arrangement on a panel 1, X-electrodes Xo of odd number data are driven at the same time by a driving circuit 2, and X-electrodes Xe of even number data are also driven at the same time by a driving circuit 3. For a reset discharging period in each sub-field, the driving circuit 2 firstly impresses a reset pulse on the X-electrodes Xo of odd number data and forms wall charges on all the cells of odd number data line Lo, and then, sequentially drives Y-electrodes Yo of odd number data and address-discharges the cells to be maintenance-discharged. When the above- mentioned discharge ends about the line Lo of odd number data, the reset- and address-discharges are performed in the same way to the line Le of even number data consisting of X electrodes Xe of even number data and Y- electrodes Ye of even number data by the driving circuit 3. The maintenance discharge is performed to all the lines of the panel 1 simultaneously.

27. 发明专利

JPH09306382A DEFLECTION YOKE 失效
公开(公告)号：JPH09306382A
公开(公告)日：1997-11-28
申请号：JP12164996
申请日：1996-05-16
申请人： HITACHI LTD , HITACHI MEDIA ELECTRON KK
发明人： MIZUTA TAKAHISA , JITSUKATA HIROSHI , SAKURAI SOICHI , SATO YOSHIO , OBARA MASAO
IPC分类号： H01J29/76
摘要： PROBLEM TO BE SOLVED: To improve a heat radiating effect, and reduce a temperature rise in a deflection yoke by arranging slits or projections in a magnetic substance core. SOLUTION: In an outer wall surface part of a magnetic substance core 1 of a deflection yoke, plural slits 2 are arranged in the direction almost running along the central axis connecting respective central points of opening parts on both ends of the magnetic substance core 1, and the air contact area of a core outer wall surface is increased. Therefore, heat generated in a vertical deflection coil and a horizontal deflection coil is mostly transmitted to the magnetic substance core, and is efficiently radiated outside from the outer wall surface, and a temperature rise in the deflection yoke can be reduced. When a toroidal coil is used as the deflection coils, since a coil stranded wire is wound inside the slits 2 of the magnetic substance core 1, arranging performance of coil winding can be improved.

28. 发明专利

JPH0817360A CONVERGENCE YOKE 失效
公开(公告)号：JPH0817360A
公开(公告)日：1996-01-19
申请号：JP15079094
申请日：1994-07-01
申请人： HITACHI LTD , HITACHI MEDIA ELECTRON KK
发明人： MIZUTA TAKAHISA , FUKUMA KOJI , JITSUKATA HIROSHI , SAKURAI SOICHI , SATO YOSHIO , OBARA YOSHIHIRO
IPC分类号： H01J29/76
摘要： PURPOSE:To enhance the accuracy of mounting a bobbin on which wire is wound by forming the bobbin in such a way as to surround the magnetic core projections of a convergence yoke. CONSTITUTION:This convergence yoke 1, which is a component of the deflection yoke of a color cathode-ray tube, comprises a bobbin 2, a coil 3, a magnetic core 4, and projections 41 of the magnetic core 4. The bobbin 2 is formed in such a way as to surround the projections 41 of the magnetic core 4 and so does not pass through the magnetic core 4. With the bobbin 2 thus constructed, the accuracy of positioning in fitting the bobbin 2 over the core 4 is improved, and the insulation of a cathode-ray tube glass bulb from the magnetic core 4 is enhanced.

29. 发明专利

JPH06168675A DEFLECTION YOKE 失效
公开(公告)号：JPH06168675A
公开(公告)日：1994-06-14
申请号：JP31973892
申请日：1992-11-30
申请人： HITACHI LTD , HITACHI MIZUSAWA ELECTRONICS
发明人： MIZUTA TAKAHISA , SAKURAI SOICHI , OKUYAMA NORITAKA , NAKAHARA MASAKI , YOSHIKAWA YOSHIO
IPC分类号： H01J29/76
摘要： PURPOSE:To fix a trumpet shape magnetic substance to the other member of a deflection yoke by fastening belt-like members to a large diameter side end part and a small diameter side end part of the trupmet shape magnetic substance so as to surround the trumpet shape magnetic substance. CONSTITUTION:Belt-like members 7 to fix a magnetic substance 2 and screws 8 to fasten the belt-like members 7 are provided. When the belt-like members 7 are fastened by the screws 8, the magnetic substance 2 is fixed to a vertical deflection coil 4 and a separator 6. A notch is formed in a part of the belt-like members 7, and rotation preventive claws 9 of the magnetic substance 2 bent in one direction are provided, and when a projecting part 10 installed in the magnetic substance 2 and the separator 6 is sandwiched by the rotation preventive claws 9, rotation of a core 2 to the separator 6 can be prevented. Thereby, the trumpet shape magnetic substance can be fixed to the other member of a deflection yoke without using an adhesive at all.

30. 发明专利

JPH0437281A CONVERGENCE YOKE 失效
公开(公告)号：JPH0437281A
公开(公告)日：1992-02-07
申请号：JP14144690
申请日：1990-06-01
申请人： HITACHI LTD
发明人： MIZUTA TAKAHISA , SAKURAI SOICHI , NAKAHARA MASAKI , OKUYAMA NORITAKA
IPC分类号： H01J29/54 , H04N9/28
摘要： PURPOSE:To correct dispersion in the magnetic field caused between magnetic poles due to manufacture accuracy or the like and to adjust a magnetic field to each cathode ray tube by adjusting a magnetic field adjustment core so as to correct an unbalance component caused between the magnetic poles. CONSTITUTION:When a magnetic field adjustment core 1f is moved in a direction IN in a core projection 1j, an equivalent permeability of the core projection 1j is increased and when the magnetic field adjustment core 1f is moved in a direction OUT in the core projection 1j, an equivalent permeability of the core projection 1j is decreased. Moreover, the equivalent permeability is respectively increased/decreased according to the same reason as to a magnetic adjustment core 1g and a core projection 1k, a magnetic adjustment core 1h and a core projection 1l, and a magnetic adjustment core 1e and a core projection 1i. Thus, the strength of magnetic fields 1m, 1n, 1o and 1p and the magnetic field distribution are adjusted. Thus, dispersion in the magnetic field caused between magnetic poles due to manufacture accuracy or the like is corrected and a magnetic field of each cathode ray tube is adjusted.

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