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1. 发明专利

JP2008009443A Plasma display driving method and apparatus 有权
标题翻译：等离子体显示驱动方法和装置
公开(公告)号：JP2008009443A
公开(公告)日：2008-01-17
申请号：JP2007198301
申请日：2007-07-31
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 , G09G3/293 , G09G3/296 , G09G3/298 , H04N5/66
摘要： PROBLEM TO BE SOLVED: To provide a plasma display driving apparatus which can stably drive a display panel without malfunction even if an interval between discharge cells is reduced, and achieves display of a high quality video. 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, 3 and input the ratio to a control pulse power supply 5 as a signal Vcont. According to the light-emitting pixel ratio, the power supply 5 lowers a sub-field reset voltage for an image with a low light-emitting pixel ratio, and raises the sub-field reset voltage for an image with a high ratio. A signal processing circuit 7 applies processing necessary for display to the R, G, B digital signals from the A/D converter circuits 1, 2, 3. A drive circuit 8 inserts a control pulse or the like necessary for display into the signal from the processing circuit 7 from the power supply 6 and converts it to voltage for turning on the display panel 9. Thus, even if the interval between the discharge cells is small, the occurrence of a bright spot or the like in a dark screen can be prevented and reset discharge in a bright screen can be surely performed, and the panel 9 can be stably driven without malfunction. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供一种等离子体显示驱动装置，即使放电单元之间的间隔减小也能够不发生故障地稳定地驱动显示面板，能够实现高品质的视频的显示。解决方案：检测电路4从A / D转换器电路1,2,3的R，G，B数字数据检测一个屏幕的发光像素比，并将该比率输入到控制脉冲电源5作为信号Vcont 根据发光像素比，电源5降低了低发光像素比的图像的子场复位电压，并提高了高比率的图像的子场复位电压。信号处理电路7对来自A / D转换器电路1,2,3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6的处理电路7并将其转换为用于使显示面板9转动的电压。因此，即使放电单元之间的间隔小，也可以在黑屏中出现亮点等可以可靠地实现在明亮屏幕中的防止和复位放电，并且可以稳定地驱动面板9而不会发生故障。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2008293042A Driving method and device for plasma display 有权
标题翻译：用于等离子显示的驱动方法和装置
公开(公告)号：JP2008293042A
公开(公告)日：2008-12-04
申请号：JP2008200340
申请日：2008-08-04
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 , G09G3/293 , G09G3/298
摘要： PROBLEM TO BE SOLVED: To provide a driving device for 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: In this driving device, a detecting circuit 4 detects and inputs the light emitting picture element ratio of one image screen from R, G, B digital data from A/D conversion circuits 1, 2 and 3 to 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 picture element 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 converts a control pulse into voltage for turning on a plasma display panel 9 by inserting the control pulse required for the display from the power source 5 into the signal from the processing circuit 7. Thus, the panel 9 can be stably driven without a malfunction by surely performing reset discharge on a bright image screen by preventing generation of a luminescent spot on a dark image screen even when the interval between the discharge cells is narrow. 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，通过稳定地驱动显示面板而不产生故障，提供能够显示高图像质量图像的等离子体显示器的驱动装置。解决方案：在该驱动装置中，检测电路4将来自A / D转换电路1,2和3的R，G，B数字数据的一个图像屏幕的发光像素比率检测并输入到控制脉冲电源5作为信号Vcont。电源5响应于发光像素比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将控制脉冲转换为用于接通等离子体显示面板9的电压，将来自电源5的显示所需的控制脉冲插入来自处理电路7的信号。因此，通过在明亮的图像屏幕上确保执行复位放电，通过防止产生发光，可以稳定地驱动面板9而不发生故障即使当放电单元之间的间隔窄时，也可以在暗图像屏幕上进行定点。版权所有（C）2009，JPO＆INPIT

3. 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

4. 发明专利

JP2007293360A Display device and display method 有权
标题翻译：显示装置和显示方法
公开(公告)号：JP2007293360A
公开(公告)日：2007-11-08
申请号：JP2007165764
申请日：2007-06-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKA KAZUTAKA , SAKATA NOBORU , TANAKA MITSUO , HARUNA FUMIO
IPC分类号： G09G3/36 , G02F1/133 , G09G3/20
摘要： PROBLEM TO BE SOLVED: To solve the problem that flickers are inconspicuous caused by an original AC processing in a field unit in a reflection type liquid crystal.
SOLUTION: It is defined that a display field frequency Fv is a frequency (for example, 100 Hz or higher) not causing flickers, and that Fv/2 is practically in the sufficient flicker sensitive area (50 to 60 Hz or higher). Moreover, to realize a smooth motion, Fv is set to an integral multiple of the field frequency of an input signal.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了解决由反射型液晶中的场单元中的原始AC处理引起的闪烁不明显的问题。解决方案：定义显示场频Fv是不引起闪烁的频率（例如，100Hz或更高），并且Fv / 2实际上处于足够的闪烁敏感区域（50至60Hz或更高））。此外，为了实现平滑运动，Fv被设定为输入信号的场频的整数倍。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2009009155A Display device and display method 审中-公开
标题翻译：显示装置和显示方法
公开(公告)号：JP2009009155A
公开(公告)日：2009-01-15
申请号：JP2008234193
申请日：2008-09-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKA KAZUTAKA , SAKATA NOBORU , TANAKA MITSUO , HARUNA FUMIO
IPC分类号： G09G3/36 , G02F1/133 , G09G3/20
摘要： PROBLEM TO BE SOLVED: To solve a problem associated with flickers which are distinct due to an AC processing in a specific field unit in a reflective liquid crystal.
SOLUTION: It is defined that a display field frequency Fv is a frequency (for example, 100 Hz or higher) not causing flickers, and that Fv/2 is in the area (50 to 60 Hz or higher) with practically sufficient flicker sensitivity. Moreover, in order to materialize a smooth motion, Fv is set to an integral multiplied frequency of the field frequency of an input signal.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：解决与反射型液晶中的特定场单元中的AC处理不同的闪烁相关的问题。解决方案：定义显示场频Fv是不引起闪烁的频率（例如，100Hz或更高），并且Fv / 2在区域（50至60Hz或更高）中具有实际足够的闪烁灵敏度。此外，为了实现平滑运动，Fv被设置为输入信号的场频的积分倍数。版权所有（C）2009，JPO＆INPIT

6. 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

7. 发明专利

DE69615962T2 未知
公开(公告)号：DE69615962T2
公开(公告)日：2002-04-04
申请号：DE69615962
申请日：1996-07-25
申请人： HITACHI LTD
发明人： NAKA KAZUTAKA , MARUYAMA ATSUSHI , URATA HIROYUKI , IWANAGA MASAAKI
IPC分类号： G06F1/10 , G09G5/18 , H03L7/081 , H03L7/091 , H03L7/199 , H04N5/04 , H04N5/12 , H04N5/20 , H04N5/66 , H04N9/64 , H03L7/085
摘要： In a video signal processing device, an input video signal VO representing a test pattern having two gradations of black and white is converted to 8-bit data by an AID converter 4 in synchronism with sampling clocks generated in a write-in control circuit 5, and then stored in a memory 6. An MPU 9 reads out picture element data in an effective area of the video signal stored in the memory 6, and calculates the difference AT between the average value of white-level picture element data whose values are larger than a predetermined value and the average value of black-level picture element data whose values are smaller than a predetermined value, and the total variance VT between the variance of the white-level picture element data and the variance of the black-level picture element data. The MPU 9 controls the phase of the sampling clocks generated in the write-in control circuit 5 so that the AT is maximum and the VT is minimum. With this operation, the sampling phase can be automatically adjusted to the optimum value when the video signal is converted to digital data.

8. 发明专利

DE4432755A1 Adjustable frequency CRT display device 未知
公开(公告)号：DE4432755A1
公开(公告)日：1995-10-05
申请号：DE4432755
申请日：1994-09-14
申请人： HITACHI LTD
发明人： OGINO MASANORI , IMOTO YOSHIYUKI , UMEHARA KUNIO , KAWASAKI JIRO , YAMAMOTO KIYOSHI , IKEDA MIYUKI , NAKA KAZUTAKA
IPC分类号： G09G1/04 , H04N3/233 , H04N3/26 , H04N3/27 , H04N9/64
摘要： The device is able to display a signal from existing picture sources with a fixed vertical frequency and a horizontal frequency spread over a ratio of 3:1. The CRT display device is made up of a sample converter unit and a display unit. The sampling converter unit has a digital storage device, a device to combine the output horizontal frequencies, a device to transform the ratio of the horizontal output sample period, a device to transform the output vertical frequency and a device to transform the ratio of the vertical output sample period. The display unit has a horizontal and a vertical deflection unit and a picture amplification circuit. The vertical deflection circuit has a device to correct a vertical S-shaped distortion, independent of the vertical deflection frequency.

9. 发明专利

DE60136044D1 未知
公开(公告)号：DE60136044D1
公开(公告)日：2008-11-20
申请号：DE60136044
申请日：2001-08-13
申请人： HITACHI LTD , HITACHI PLASMA DISPLAY LTD
发明人： NAKA KAZUTAKA , TAKEUCHI MASANORI
IPC分类号： G09G3/20 , G09G3/28 , G09G3/293

10. 发明专利

DE69631445T2 未知
公开(公告)号：DE69631445T2
公开(公告)日：2004-12-02
申请号：DE69631445
申请日：1996-07-25
申请人： HITACHI LTD
发明人： NAKA KAZUTAKA , MARUYAMA ATSUSHI , URATA HIROYUKI , IWANAGA MASAAKI
IPC分类号： G06F1/10 , G09G5/18 , H03L7/081 , H03L7/091 , H03L7/199 , H04N5/04 , H04N5/12 , H04N5/20 , H04N5/66 , H04N9/64 , H03L7/085 , B65G65/00
摘要： In a video signal processing device, an input video signal VO representing a test pattern having two gradations of black and white is converted to 8-bit data by an AID converter 4 in synchronism with sampling clocks generated in a write-in control circuit 5, and then stored in a memory 6. An MPU 9 reads out picture element data in an effective area of the video signal stored in the memory 6, and calculates the difference AT between the average value of white-level picture element data whose values are larger than a predetermined value and the average value of black-level picture element data whose values are smaller than a predetermined value, and the total variance VT between the variance of the white-level picture element data and the variance of the black-level picture element data. The MPU 9 controls the phase of the sampling clocks generated in the write-in control circuit 5 so that the AT is maximum and the VT is minimum. With this operation, the sampling phase can be automatically adjusted to the optimum value when the video signal is converted to digital data.

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