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1. 发明专利

JP2008262018A Drive circuit of image display device and image display method 审中-公开
标题翻译：图像显示装置的驱动电路和图像显示方法
公开(公告)号：JP2008262018A
公开(公告)日：2008-10-30
申请号：JP2007104586
申请日：2007-04-12
申请人： Renesas Technology Corp , 株式会社ルネサステクノロジ
发明人： KUROKAWA YOSHIKI , KATAYAMA YUKARI , KUDO YASUYUKI , AKAI RIYOUJIN , SAKAMAKI GORO , AWAKURA HIROMOTO , TAKADA NAOKI
IPC分类号： G09G3/36 , G02F1/133 , G09G3/20 , G09G3/34
摘要： PROBLEM TO BE SOLVED: To provide an image display device achieving electric power saving by decreasing the light emission quantity of a backlight, in which further electric power saving is made possible by reducing the light emission quantity of the backlight when pixels with relatively low luminance are present in a large number and the luminance degrades.
SOLUTION: A drive circuit of an image display device displaying an image by irradiating a display screen with light from a backlight is provided, which has a backlight control section 104 including: a histogram counting section 201 counting display data 208 to obtain a histogram and determining a value at a specified position of the histogram as a selected data value 211; a display data extension section 202 extending the display data 208 based on the selected data value 211; and a backlight voltage regulation section 104 regulating the emission voltage of the backlight based on the selected data value 211. The histogram counting section 201 counts to obtain a weighted histogram by using a weighted value according to the value of the display data 208.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过降低背光源的发光量来实现节电的图像显示装置，其中当具有相对的像素时，通过降低背光源的发光量可以进一步节电低亮度存在大量且亮度降低。提供了一种通过用来自背光的光照射显示屏来显示图像的图像显示装置的驱动电路，其具有背光控制部分104，其包括：直方图计数部分201，对显示数据208进行计数，以获得直方图并将直方图的指定位置处的值确定为选择的数据值211; 显示数据扩展部分202，根据所选择的数据值211扩展显示数据208; 以及基于选择的数据值211调节背光的发光电压的背光源电压调节部分104.直方图计数部分201通过使用根据显示数据208的值的加权值来计数以获得加权直方图。
版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2007310047A Driving circuit for display device and driving method therefor 有权
标题翻译：用于显示设备的驱动电路及其驱动方法
公开(公告)号：JP2007310047A
公开(公告)日：2007-11-29
申请号：JP2006137357
申请日：2006-05-17
申请人： Renesas Technology Corp , 株式会社ルネサステクノロジ
发明人： AWAKURA HIROMOTO , KUDO YASUYUKI , SHOJI TAKASHI , OTA SHIGERU
IPC分类号： G09G3/36 , G02F1/133 , G09G3/20
CPC分类号： G09G3/3648 , G09G5/397 , G09G2310/04 , G09G2340/12
摘要： PROBLEM TO BE SOLVED: To provide the driving technique of a display device which achieves partial displays of low power consumption corresponding to high-quality and various displays by avoiding a display disturbance occurring when switching an image data accompanying the change of a partial display area during the partial displays.
SOLUTION: In the liquid crystal driver 101 of a liquid crystal display device provided with a mechanism which performs the switching between the image data for the partial displays from a partial storage device and non-display (background pattern), the change of the partial display area is detected from the setting command of the partial display area and a mask switch 112 is controlled so as to select the background pattern. Write timing into the final line on the changed partial display area in the partial storage device 110 is decided from an address counter 108 which controls the partial storage device and the mask switch 112 is controlled so as to select the image data of the partial storage device from a subsequent frame.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种显示装置的驱动技术，其通过避免当切换伴随部分变化的图像数据时发生的显示干扰而实现与高质量和各种显示相对应的低功耗部分显示显示部分显示区域。解决方案：在具有执行从部分存储装置的部分显示的图像数据和非显示（背景图案）之间的切换的机构的液晶显示装置的液晶驱动器101中，从部分显示区域的设置命令检测部分显示区域，并且控制掩码开关112以便选择背景图案。从部分存储装置110中改变的部分显示区域的最后一行的写入定时从控制部分存储装置的地址计数器108确定，并且屏蔽开关112被控制以便选择部分存储装置的图像数据从后续的框架。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2008268717A Driving circuit of image display device, and image display method 审中-公开
标题翻译：图像显示装置的驱动电路和图像显示方法
公开(公告)号：JP2008268717A
公开(公告)日：2008-11-06
申请号：JP2007114161
申请日：2007-04-24
申请人： Renesas Technology Corp , 株式会社ルネサステクノロジ
发明人： AWAKURA HIROMOTO , KUROKAWA YOSHIKI , KATAYAMA YUKARI , AKAI RIYOUJIN , TAKADA NAOKI , SAKAMAKI GORO
IPC分类号： G09G3/36 , G02F1/133 , G09G3/20 , G09G3/34
摘要： PROBLEM TO BE SOLVED: To improve a power reducing effect by distinguishing an area of a display screen, which has high or low influence on display quality, from the other area and suitably controlling the light emitting quantity of a backlight in an image display device capable of saving power by reducing the light emitting quantity of the backlight.
SOLUTION: A driving circuit of the image display device for displaying an image by irradiating a display screen with light from a backlight has a backlight control part which includes a histogram counting part 301 for counting display data, acquiring a histogram and calculating a value of the display data on an upper specific position, a display data extension part 302 for extending each display data and a backlight adjustment part 303 for adjusting the light emitting quantity of the backlight. The histogram counting part 301 includes a weighting coefficient calculation part 305 for outputting a weighting coefficient corresponding to a display position to acquire the histogram by adding the weighting coefficient and counting the display data.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了通过将对显示质量的影响高或低的显示屏的区域从其他区域区分开来并且适当地控制图像中的背光的发光量来提高功率降低效果显示装置能够通过减少背光的发光量来节省电力。解决方案：用于通过用来自背光的光照射显示屏来显示图像的图像显示装置的驱动电路具有背光控制部分，其包括用于计数显示数据的直方图计数部分301，获取直方图并计算在上位特定位置上的显示数据的值，用于扩展每个显示数据的显示数据扩展部分302和用于调节背光的发光量的背光调节部分303。直方图计数部301包括：加权系数计算部305，用于输出与显示位置相对应的加权系数，以通过加权系数和计数显示数据来获得直方图。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2008083604A Display drive circuit 有权
标题翻译：显示驱动电路
公开(公告)号：JP2008083604A
公开(公告)日：2008-04-10
申请号：JP2006266147
申请日：2006-09-29
申请人： Renesas Technology Corp , 株式会社ルネサステクノロジ
发明人： AKAI RIYOUJIN , KUDO YASUYUKI , KUROKAWA YOSHIKI , SAKAMAKI GORO , AWAKURA HIROMOTO , TAKADA NAOKI
IPC分类号： G09G3/36 , G02F1/133 , G09G3/20 , G09G3/34 , H04N5/66
CPC分类号： G09G3/3406 , G09G3/3688 , G09G2320/0261 , G09G2320/0613 , G09G2320/0626 , G09G2320/064 , G09G2320/0646 , G09G2340/145 , G09G2360/16
摘要： PROBLEM TO BE SOLVED: To provide a display drive circuit which can attain low power consumption by back-light control, and can also improve visibility during appreciating a moving picture. SOLUTION: In a liquid crystal driver 201 of a liquid crystal display apparatus, a plurality of kinds of expansion rates of display data, two kinds of expansion rates, for example, can be set by a register. Also, these two kinds of expansion rates are made applicable to two kinds of areas (still picture and moving picture) of coordinates prespecified in a liquid crystal panel 202, respectively. As a result, the expansion rates of a pixel value can be made to differ between the still picture area and the moving picture area. Thus, it becomes possible to increase display luminance only in the moving picture area, the low power consumption is compatible with the improvement in visibility. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够通过背光控制实现低功耗的显示驱动电路，并且还可以在欣赏运动画面的同时提高可视性。解决方案：在液晶显示装置的液晶驱动器201中，可以通过寄存器来设置多种显示数据的扩展速率，例如两种扩展速率。此外，这两种扩展速率分别适用于在液晶面板202中预先指定的坐标的两种区域（静止图像和运动图像）。结果，可以使静止图像区域和运动图像区域之间的像素值的扩展速率不同。因此，可以仅在运动图像区域中增加显示亮度，低功耗与可见度的提高兼容。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2008225132A Drive circuit for display 审中-公开
标题翻译：用于显示的驱动电路
公开(公告)号：JP2008225132A
公开(公告)日：2008-09-25
申请号：JP2007064367
申请日：2007-03-14
申请人： Renesas Technology Corp , 株式会社ルネサステクノロジ
发明人： TAKADA NAOKI , KUDO YASUYUKI , AKAI RIYOUJIN , KUROKAWA YOSHIKI , AWAKURA HIROMOTO , SAKAMAKI GORO
IPC分类号： G09G3/36 , G02F1/133 , G09G3/20 , G09G3/34
摘要： PROBLEM TO BE SOLVED: To provide a drive circuit for display capable of avoiding image quality deterioration due to the difference of extension rate between updated data and data which is not updated in memory front stage backlight control part structure.
SOLUTION: In a liquid crystal driver, only data expansion processing following the expansion rate among processings of a backlight control part 105 is performed at memory post stage. In addition, in switching to Window display, the extension rate (overall extension rate) in display of the whole screen before the Window display is stored, the extension rate inside a Window is compared with the overall expansion rate, to determine the extension rate. Selection of data expansion rate this time is switched by area of the Window or a video image displayed on the Window.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于显示的驱动电路，其能够避免更新数据与存储器前级背光控制部件结构中未更新的数据之间的扩展速率的差异导致的图像质量恶化。解决方案：在液晶驱动器中，仅在背光控制部件105的处理之后的扩展速率之后的数据扩展处理在存储器后级执行。另外，在切换到窗口显示时，存储在窗口显示之前的整个屏幕的显示的扩展速率（总扩展速率），将窗口内的扩展速率与整体扩展速率进行比较，以确定扩展速率。此次的数据扩展速率的选择是通过窗口的区域或窗口中显示的视频图像来切换的。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2008107580A Display luminance control circuit 有权
标题翻译：显示发光控制电路
公开(公告)号：JP2008107580A
公开(公告)日：2008-05-08
申请号：JP2006290591
申请日：2006-10-26
申请人： Renesas Technology Corp , 株式会社ルネサステクノロジ
发明人： AWAKURA HIROMOTO , AKAI RIYOUJIN , KUROKAWA YOSHIKI , TAKADA NAOKI , SAKAMAKI GORO
IPC分类号： G09G3/36 , G02F1/133 , G09G3/20 , G09G3/30 , G09G3/34 , G09G5/00 , G09G5/10
CPC分类号： G09G3/3406 , G09G3/3233 , G09G2300/0842 , G09G2320/064 , G09G2360/144
摘要： PROBLEM TO BE SOLVED: To provide a display apparatus such as a low power consumption liquid crystal display with excellent perceptivity, by combining a backlight control means with a variety of external light sensors. SOLUTION: A display luminance control circuit of the liquid crystal display apparatus includes a logarithm to linear conversion circuit 106 for converting an illumination signal whose relation with incident light is logarithmic, to a linear signal. When output of the external light sensor 101 is a logarithmic signal, it is converted to the linear signal via the logarithm to linear conversion circuit 106, and when the output of the external light sensor 101 is the linear signal, the logarithm to linear conversion circuit 106 is not used. The logarithm to linear conversion circuit 106 corresponds to an exponential function circuit which is an inverse function of logarithm log. Moreover, when input output characteristics are different even if the sensors have the same logarithmic illumination output, setting of the exponential function circuit can be changed. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过将背光控制装置与各种外部光传感器组合，来提供诸如具有良好感知力的低功耗液晶显示器的显示装置。解决方案：液晶显示装置的显示亮度控制电路包括将与入射光的对数相关的照明信号转换为线性信号的线性转换电路106的对数。当外部光传感器101的输出是对数信号时，通过对数线性转换电路106将其转换为线性信号，并且当外部光传感器101的输出是线性信号时，线性转换电路的对数 106不使用。线性转换电路106的对数对应于作为对数log的反函数的指数函数电路。此外，即使传感器具有相同的对数照明输出，当输入输出特性不同时，可以改变指数函数电路的设定。版权所有（C）2008，JPO＆INPIT

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