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公开(公告)号：EP1953731A4
公开(公告)日：2010-12-01
申请号：EP07831332
申请日：2007-11-07
Applicant: PANASONIC CORP
Inventor： YOSHIHAMA YUTAKA
CPC classification number: G09G3/2925 , G09G3/2927 , G09G3/2965 , G09G2310/0245 , G09G2310/066 , G09G2360/16
Abstract: A plasma display panel driving method and a plasma display device capable of reducing initializing spots generated immediately after the start of driving the plasma display panel, and improving the quality of images to be displayed. A plurality of subfields, each including an initializing period, an address period, and a sustain period, are provided in one field. The one field includes at least one of the subfields in which a gently increasing ramp waveform voltage is applied to the scan electrodes in the initializing period thereof. The ramp waveform voltage to be applied to the scan electrodes for the first time after the start of driving the plasma display panel is generated so as to have a gentler slope than the other ramp waveform voltages have.
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公开(公告)号：EP2410507A4
公开(公告)日：2012-08-29
申请号：EP10785936
申请日：2010-06-07
Applicant: PANASONIC CORP
Inventor： YOSHIHAMA YUTAKA , OGAWA KENJI , SAWADA TAKATERU , MAEDA TOSHIYUKI , AKAMATSU KEIJI
CPC classification number: G09G3/2965 , G09G3/2022 , G09G3/2922 , G09G3/2927 , G09G3/293 , G09G2310/066 , G09G2320/0238
Abstract: In a driving method for a plasma display panel, in the initializing period in at least one of a plurality of subfields, selective initializing operation is performed that selectively causes initializing discharge only in a discharge cell having undergone address discharge in an immediately preceding address period. The selective initializing operation includes the step of applying first voltage to the sustain electrode and applying an up-ramp waveform voltage to the scan electrode, the step of applying a down-ramp waveform voltage to the scan electrode and then applying a positive rectangular voltage to it, and the step of applying second voltage higher than the first voltage to the sustain electrode and applying a down-ramp waveform voltage to the scan electrode.
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公开(公告)号：EP1850313A4
公开(公告)日：2009-10-21
申请号：EP06711914
申请日：2006-01-18
Applicant: PANASONIC CORP
Inventor： SHOJI HIDEHIKO , YOSHIHAMA YUTAKA , HASHIGUCHI JUMPEI , TANIGUCHI HIRONARI
CPC classification number: G09G3/296 , G09G3/2037 , G09G3/204 , G09G3/293 , G09G3/2932 , G09G2320/0228 , G09G2320/0261 , G09G2330/021 , G09G2360/16
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公开(公告)号：EP2085957A4
公开(公告)日：2009-08-05
申请号：EP07831414
申请日：2007-11-08
Applicant: PANASONIC CORP
Inventor： YOSHIHAMA YUTAKA , KIGO SHIGEO
CPC classification number: G09G3/2927 , G09G3/2022 , G09G2310/066 , G09G2320/0238
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5.发明公开PLASMA DISPLAY DEVICE DRIVING METHOD, PLASMA DISPLAY DEVICE, AND PLASMA DISPLAY SYSTEM 审中-公开驱动方法的等离子显示器，等离子体显示设备等离子显示系统
公开(公告)号：EP2544170A4
公开(公告)日：2013-05-01
申请号：EP11750374
申请日：2011-03-02
Applicant: PANASONIC CORP
Inventor： ORIGUCHI TAKAHIKO , SHIOZAKI YUYA , KIGO SHIGEO , YOSHIHAMA YUTAKA , ISHIZUKA MITSUHIRO
CPC classification number: G09G3/003 , G09G3/2927 , G09G2320/0233 , G09G2320/0238 , G09G2320/0257 , G09G2320/0271 , G09G2340/16 , G09G2360/16 , H04N5/70 , H04N13/0438
Abstract: A plasma display apparatus usable as a 3D image display apparatus can reduce the crosstalk for a user who views a 3D image displayed on a plasma display panel through shutter glasses. For this purpose, the plasma display apparatus displays the 3D image on the plasma display panel having a plurality of pixels each of which is formed of a plurality of discharge cells by alternately repeating a right-eye field and a left-eye field. The plasma display apparatus adds a predetermined gradation value to an image signal to be displayed in a certain field when the number of pixels where the gradation equal to or higher than a high gradation threshold is displayed in the field immediately before a certain field and the gradation equal to or lower than a low gradation threshold is displayed in the certain field is equal to or larger than a number-of-pixels threshold.
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Patent Agency Ranking
公开(公告)号：EP2413307A4
公开(公告)日：2012-08-15
申请号：EP10785935
申请日：2010-06-07
Applicant: PANASONIC CORP
Inventor： YOSHIHAMA YUTAKA
CPC classification number: G09G3/293 , G09G3/2922 , G09G3/2925 , G09G3/2927 , G09G3/2965 , G09G2310/0202 , G09G2310/066 , G09G2320/0238 , G09G2320/0693
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公开(公告)号：EP2398010A4
公开(公告)日：2012-01-11
申请号：EP10761401
申请日：2010-04-02
Applicant: PANASONIC CORP
Inventor： YOSHIHAMA YUTAKA , OGAWA KENJI
CPC classification number: G09G3/296 , G09G3/2022 , G09G3/2927 , G09G2310/066 , G09G2320/0238 , G09G2320/0247 , G09G2320/066
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8.发明专利
公开(公告)号：JP2012083532A
公开(公告)日：2012-04-26
申请号：JP2010229425
申请日：2010-10-12
Applicant: Panasonic Corp , パナソニック株式会社
Inventor： SHIOZAKI HIRONARI , SAITO AYUHIKO , ORIGUCHI TAKAHIKO , YOSHIHAMA YUTAKA , SHOJI HIDEHIKO
Abstract: PROBLEM TO BE SOLVED: To reduce the number of times of forced initialization operations of a plasma display panel to suppress black luminance and to perform a stable writing operation.SOLUTION: In a driving method for a plasma display panel, a field includes: a first kind of subfield in which a scanning electrode applying falling inclined waveform voltage after applying rising inclined waveform voltage rising up to prescribed voltage generating discharge, regardless of the history of discharge, and a scanning electrode applying falling inclined waveform voltage after applying rising inclined waveform voltage rising up to voltage lower than prescribed voltage exist; and a second kind of subfield applying falling inclined waveform voltage to the scanning electrodes. In an initialization period of the first kind of subfield, falling inclined waveform voltage is applied to the scanning electrodes and first voltage is applied to a data electrode. In an initialization period of the second kind of subfield, falling inclined waveform voltage is applied to the scanning electrodes, and second voltage higher than the first voltage is applied to the data electrode.
Abstract translation: 要解决的问题：为了减少等离子体显示面板的强制初始化操作的次数以抑制黑色亮度并执行稳定的写入操作。 解决方案：在等离子体显示面板的驱动方法中，场包括：第一种子场，其中扫描电极在施加上升的倾斜波形电压之后施加下降的倾斜波形电压，上升到规定的电压产生放电，不管 存在放电历史，以及在施加上升至低于规定电压的电压的上升斜波形电压之后施加下降倾斜波形电压的扫描电极; 以及向扫描电极施加下降的倾斜波形电压的第二种子场。 在第一种子场的初始化期间，向扫描电极施加下降的倾斜波形电压，向数据电极施加第一电压。 在第二种子场的初始化期间，向扫描电极施加下降的倾斜波形电压，并且向数据电极施加高于第一电压的第二电压。 版权所有（C）2012，JPO＆INPIT
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9.发明专利
公开(公告)号：JP2012058653A
公开(公告)日：2012-03-22
申请号：JP2010204158
申请日：2010-09-13
Applicant: Panasonic Corp , パナソニック株式会社
Inventor： YOSHIHAMA YUTAKA , MAEDA TOSHIYUKI
Abstract: PROBLEM TO BE SOLVED: To suppress black luminance by performing a stable writing operation without using a forced initialization operation and to suppress deterioration of display quality of an image with low luminance.SOLUTION: When a voltage obtained by deducting a voltage of a data electrode from a low pressure side voltage of a sustaining pulse is a first voltage and a voltage obtained by deducting a low pressure side voltage of a writing pulse from a low pressure side voltage of a scanning pulse is a third voltage, a voltage obtained by deducting the third voltage from the first voltage is equal to or higher than a discharge start voltage having the data electrode as an anode and a scanning electrode as a cathode. When gradation to be displayed without emitting light of a discharge cell in all subfields is defined as gradation "0", dither processing or error diffusion processing is performed for inputted image signals after performing nonlinear processing for replacing image signals which are less than a signal level corresponding to a prescribed gradation threshold with image signals corresponding to the gradation "0".
Abstract translation: 要解决的问题：通过在不使用强制初始化操作的情况下执行稳定的写入操作来抑制黑色亮度，并且抑制具有低亮度的图像的显示质量的劣化。 解决方案：当通过从维持脉冲的低压侧电压中扣除数据电极的电压而获得的电压是第一电压，并且通过从低压中扣除写入脉冲的低压侧电压而获得的电压 扫描脉冲的侧电压是第三电压，通过从第一电压中扣除第三电压而获得的电压等于或高于具有作为阳极的数据电极和作为阴极的扫描电极的放电开始电压。 当在所有子场中不显示放电单元的光的情况下显示要显示的灰度被定义为灰度“0”时，对进行非线性处理的输入图像信号进行抖动处理或误差扩散处理，以替换小于信号电平的图像信号 对应于具有与灰度“0”对应的图像信号的规定灰度阈值。 版权所有（C）2012，JPO＆INPIT
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10.发明专利
公开(公告)号：JP2012037589A
公开(公告)日：2012-02-23
申请号：JP2010175010
申请日：2010-08-04
Applicant: Panasonic Corp , パナソニック株式会社
Inventor： YOSHIHAMA YUTAKA , KUSAMA FUMITO
Abstract: PROBLEM TO BE SOLVED: To eliminate an emission independent of gradation display by omitting forced initialization operation while stably generating writing operation.SOLUTION: When a voltage obtained by subtracting a data electrode voltage from a low voltage side voltage of a sustaining pulse is a first voltage, and a voltage obtained by subtracting a low voltage side voltage of a data pulse from a low voltage side voltage of a scanning pulse is a third voltage, a voltage obtained by subtracting the third voltage from the first voltage is a discharge start voltage or more where the data electrode is an anode and a scanning electrode is a cathode. In an erasure period, erasure discharge is selectively generated only in a discharge cell with a write discharge generated in a last write period, and in the erasure period, a fourth voltage of positive polarity is applied to the data electrode. In a write period, a downward inclined waveform voltage descending toward a fifth voltage higher than a voltage obtained by superimposing the fourth voltage to a low voltage side voltage of the scanning pulse applied to the scanning electrode is applied to the scanning electrode, and the erasure discharge is selectively generated only in the discharge cell with the write discharge generated in the last write period.
Abstract translation: 要解决的问题：通过在稳定地产生写入操作的同时省略强制初始化操作来消除与灰度显示无关的发射。 解决方案：当通过从维持脉冲的低电压侧电压减去数据电极电压而获得的电压是第一电压，并且通过从低电压侧减去数据脉冲的低电压侧电压而获得的电压 扫描脉冲的电压是第三电压，通过从第一电压减去第三电压而获得的电压是数据电极是阳极并且扫描电极是阴极的放电开始电压以上。 在擦除期间，仅在具有在最后写入周期中产生的写入放电的放电单元中选择性地产生擦除放电，并且在擦除期间，对数据电极施加正极性的第四电压。 在写入期间，向扫描电极施加向与向扫描电极施加的扫描脉冲的低电压侧电压叠加而获得的电压以上的第五电压下降的向下倾斜波形电压，并且擦除 仅在放电单元中选择性地产生放电，其中在最后写入周期中产生写入放电。 版权所有（C）2012，JPO＆INPIT
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