专利名称:提高等离子显示器图象清晰度电视的方法
技术领域:
本发明涉及从视频处理的角度提出的一种提高彩色等离子显示器图像清晰度的方法,属于等离子显示器图像显示技术领域。
背景技术:
利用等离子显示屏(Plasma Display Panel)显示图像的方法,在1920年就在美国诞生了,但CRT的普遍使用,滞后了其研制的开发进程,1960年以后,这种研究逐渐从美国转移到日本,交流型PDP从IRINOIS大学转移到富士通直流型PDP从BAROUSU转移到NHK。从工作方式上分为交流(AC)PDP和直流(DC)PDP,ACPDP又分为对象放电型PDP和表面放电型PDP,我们今天所指的PDP,就是指交流表面放电型的PDP。
原来AC型PDP被认为实现HDTV*256等级灰度的高等级目标,规格是困难的,随着分离显示期间和选址期间的高速灰度驱动法(地址/显示分离型子帧法被发明。)高等级灰度显示成为可能。在PDP中,因采用子帧法对于移动画面,会产生画质下降的伪轮廓问题,这就象人的脸一样,在进行流畅灰度变化部分产生明显的伪轮廓现象。
PDP作为严格的数字化视频处理系统,包括下述步骤.NTSC/PAL数字解码并消除或者说是减少噪声。(decoding with artifactsuppression).时基校正和消除抖动(Timebase Correction and jitter removal)
.基于运动检测的隔行逐行变换(Motion adaptive deinterlacing).运动自适应的噪声消除(Motion adaptive noise reduction).非线性带宽扩展.比例变换.色空间转换.色彩控制和γ校正.帧速率转换解码的过程是对复合同步信号进行亮色分离,其难点在于信号源编码(NTSC编码或者PAL编制)时所采用的亮度和色度在频率域上的交织处理过程中,没有进行适当的预滤波以消除叠加,以至于很难阻止亮度通道和色度通道的交叉耦合,这种现象在大多数电视机中可以看到亮色串绕。比较廉价的老式视频解码器中,采用的是窄带解码器,对亮度信号在彩色负载波中心频率附近进行滤波,这样图像中损失了许多细节,影响清晰度。
现代典型的视频解码器中,使用无滤波的多行梳状滤波器,对连续的行进行平均以获得亮度信号;这种方法的问题在于多采用的平均行中要求色度不变;但实际上是不可能的,这将导致在彩色的边缘产生噪声(artifacts at color boundary)。
国际上也有一些学者提出使用3维解码,使用2-3个连续的场来分离亮度和色度,其对于静止图像可取得较好的效果,但对于运动图像的效果较差。
PDP中显示的是逐行扫描的信号,而标准的视频信号时垂直方向2∶1的隔行扫描信号。因此,标准的视频信号在PDP中显示时,要进行隔行逐行扫描变换(De-interlace),这就要求在当前场中产生丢失的另一半信息。De-interlace的算法很多,如行插值法、帧内插值法、空间插值法、加权运动插值法、中值滤波插值法、邻域检测插值法等,但是易于工业实现的方法归结起来有二类其一场内空间插值插值数据来自于场内图像(Spatial interpolation),这种方法的缺点时牺牲一半的垂直分辨率。
其二场间插值插值数据来自于连续的图像,这种方法的优点时可获得较好的垂直分辨率,缺点是对图像运动物体的边像产生影响,而使图像模糊。
发明内容
本发明所要解决的技术问题是提供一种提高等离子显示器显示图像的清晰度和透亮度的方法。
本发明是这样来实现的在交流表面放电型PDP系统中,在测量、绘出PDP显示屏模块的红色通道电光响应曲线,绿色通道电光响应曲线和蓝色通道电光响应曲线的基础上,确定各色彩分量的校正曲线,通过在0-256之间取值,计算出各色彩分量的矫正表,以查表的方式加入到视频处理过程后端的校正查表处理电路中。
本方法能更好地发挥等离子显示屏(PDP)的显示效果,更多地表现出视频图像的灰度等级和色彩透亮度。
四
附图为PDP视频处理实施方框图。
五具体实施例方式参照说明书附图,按以下流程实施1、测量PDP显示屏的红色通道的亮度响应曲线O_Gr(x,v)设置PDP显示屏绿色通道G
输入值为零,蓝色通道B
输入值为零。让红色通道R
输入值在0,1,2 .255变化,用亮度计测量PDP显示屏对应的输出亮度值,并绘制出亮度的响应曲线O_Gr(x,v)。2、测量PDP显示屏的绿色通道的亮度响应曲线O_Gg(x,v)设置PDP显示屏红色通道R
,蓝色通道B
输入值为零。让绿色通道G
输入值在0,1,2 .255变化,用亮度计测量PDP显示屏对应的输出亮度值,并绘制出亮度的响应曲线O_Gg(x,v)。3、测量PDP显示屏的蓝色通道的亮度响应曲线O_Gb(x,v)设置PDP显示屏红色通道R
,绿色通道G
输入值为零。让蓝色通道B
输入值在0,1,2 .255变化,用亮度计测量PDP显示屏对应的输出亮度值,并绘制出亮度的响应曲线O_Gb(x,v)。4、确定各色彩分量的校正曲线Cr(x,v),Cg(x,v),Cb(x,v)Cr(x,v)=1/(O_Gr(x,v)*I-Gr(x,v)-----------------(a)Cr(x,v)等于红色通道输入信号响应曲线与红色通道输出的响应曲线乘积之倒数Cg(x,v)=1/(O_Gg(x,v)*I-Gg(x,v)----------------(b)Cg(x,v)等于绿色通道输入信号响应曲线与蓝色通道输出的响应曲线乘积之倒数Cb(x,v)=1/(O_Gb(x,v)*I-Gb(x,v)----------------(c)Cb(x,v)等于蓝色通道输入信号响应曲线与红色通道输出的响应曲线乘积之倒数其中,I_Cr(x,v),I_Gg(x,v),I_Gb(x,v)分别为输入信号R,G,B各成分对应的电平亮度响应曲线。5、依据4所计算出的各色彩分量的校正曲线计算通道的输出电平值。根据(a)式,x取值在0到255之间,得到红色通道由256个数值构成的矫正表根据(b)式,x取值在0到255之间,得到绿色通道由256个数值构成的矫正表根据(c)式,x取值在0到255之间,得到蓝色通道由256个数值构成的矫正表6、把5所得到的三张矫正表以查表的方式加入到视频处理过程中。7、本方法能更好地发挥等离子显示屏(PDP)的显示效果,更多地表现出视频图像的灰度等级和色彩透亮度。
红色通道由256个数值构成的矫正表如下0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x4,0x4,0x4,0x4,0x4,0x4,0x5,0x5,0x5,0x5,0x5,0x6,0x6,0x6,0x6,0x7,0x7,0x7,0x7,0x7,0x8,0x8,0x8,0x9,0x9,0x9,0x9,0xA,0xA,0xA,0xB,0xB,0xB,0xC,0xC,0xC,0xD,0xD,0xD,0xE,0xE,0xE,0xF,0xF,0x10,0x10,0x10,0x11,0x11,0x12,0x12,0x13,0x13,0x14,0x14,0x14,0x15,0x15,0x16,0x16,0x17,0x17,0x18,0x19,0x19,0x1A,0x1A,0x1B,0x1B,0x1C,0x1D,0x1D,0x1E,0x1E,0x1F,0x20,0x20,0x21,0x22,0x22,0x23,0x24,0x24,0x25,0x26,0x26,0x27,0x28,0x29,0x29,0x2A,0x2B,0x2C,0x2C,0x2D,0x2E,0x2F,0x30,0x31,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,0x50,0x52,0x53,0x54,0x55,0x56,0x58,0x59,0x5A,0x5B,0x5D,0x5E,0x5F,0x60,0x62,0x63,0x64,0x66,0x67,0x69,0x6A,0x6B,0x6D,0x6E,0x70,0x71,0x72,0x74,0x75,0x77,0x78,0x7A,0x7B,0x7D,0x7E,0x80,0x82,0x83,0x85,0x86,0x88,0x8A,0x8B,0x8D,0x8F,0x90,0x92,0x94,0x95,0x97,0x99,0x9B,0x9C,0x9E,0xA0,0xA2,0xA4,0xA5,0xA7,0xA9,0xAB,0xAD绿色通道由256个数值构成的矫正表如下,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x4,0x4,0x4,0x4,0x4,0x5,0x5,0x5,0x5,0x5,0x6,0x6,0x6,0x6,0x7,0x7,0x7,0x7,0x8,0x8,0x8,0x9,0x9,0x9,0xA,0xA,0xA,0xB,0xB,0xB,0xC,0xC,0xC,0xD,0xD,0xE,0xE,0xE,0xF,0xF,0x10,0x10,0x11,0x11,0x12,0x12,0x13,0x13,0x14,0x14,0x15,0x15,0x16,0x16,0x17,0x17,0x18,0x19,0x19,0x1A,0x1A,0x1B,0x1C,0x1C,0x1D,0x1E,0x1E,0x1F,0x20,0x20,0x21,0x22,0x23,0x23,0x24,0x25,0x26,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2B,0x2C,0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,0x40,0x41,0x42,0x43
,0x45,0x46,0x47,0x48,0x49,0x4A,0x4C,0x4D,0x4E,0x4F,0x51,0x52,0x53,0x55,0x56,0x57,0x59,0x5A,0x5B,0x5D,0x5E,0x60,0x61,0x63,0x64,0x66,0x67,0x69,0x6A,0x6C,0x6D,0x6F,0x70,0x72,0x73,0x75,0x77,0x78,0x7A,0x7C,0x7D,0x7F,0x81,0x83,0x84,0x86,0x88,0x8A,0x8C,0x8D,0x8F,0x91,0x93,0x95,0x97,0x99,0x9B,0x9D,0x9F,0xA1,0xA3,0xA5,0xA7,0xA9,0xAB,0xAD,0xAF,0xB1,0xB3,0xB5,0xB8,0xBA,0xBC,0xBE,0xC0,0xC3,0xC5,0xC7,0xC9,0xCC,0xCE,0xD1,0xD3,0xD5,0xD8,0xDA,0xDD,0xDF,0xE1,0xE4蓝色通道由256个数值构成的矫正表如下,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x4,0x4,0x4,0x4,0x4,0x5,0x5,0x5,0x5,0x6,0x6,0x6,0x6,0x7,0x7,0x7,0x7,0x8,0x8,0x8,0x9,0x9,0x9,0xA,0xA,0xA,0xB,0xB,0xB,0xC,0xC,0xD,0xD,0xD,0xE,0xE,0xF,0xF,0x10,0x10,0x11,0x11,0x12,0x12,0x13,0x13,0x14,0x14,0x15,0x15,0x16,0x16,0x17,0x18,0x18,0x19,0x19,0x1A,0x1B,0x1B,0x1C,0x1D,0x1D,0x1E,0x1F,0x20,0x20,0x21,0x22,0x23,0x23,0x24,0x25,0x26,0x27,0x27,0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,0x30,0x31,0x32,0x32,0x33,0x34,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,0x40,0x42,0x43,0x44,0x45,0x46,0x48,0x49,0x4A,0x4B,0x4D,0x4E,0x4F,0x51,0x52,0x53,0x55,0x56,0x57,0x59,0x5A,0x5C,0x5D,0x5F,0x60,0x62,0x63,0x65,0x66,0x68,0x69,0x6B,0x6D,0x6E,0x70,0x72,0x73,0x75,0x77,0x78,0x7A,0x7C,0x7E,0x7F,0x81,0x83,0x85,0x87,0x89,0x8A,0x8C,0x8E,0x90,0x92,0x94,0x96,0x98,0x9A,0x9C,0x9E,0xA0,0xA2,0xA4,0xA7,0xA9,0xAB,0xAD,0xAF,0xB1,0xB4,0xB6,0xB8,0xBA,0xBD,0xBF,0xC1,0xC4,0xC6,0xC8,0xCB,0xCD,0xD0,0xD2,0xD5,0xD7,0xDA,0xDC,0xDF,0xE1,0xE4,0xE7,0xE9,0xEC,0xEF,0xF1,0xF4,0xF7,0xF9,0xFC,0xFF在本实施例中,针对RGB三通道使用了3块有256个宏单元的CPLD,R(0-7)、G(0-7)、B(0-7)作为查表处理电路的地址输入信号,R’(0-7)、G’(0-7)、B’(0-7)为校正后对应的响应输出,如果设计成ASIC,成本会更低。
权利要求
1.一种提高彩色等离子显示器(Plasma Display Panel)图像清晰度的方法,将被用于由视频解码器、模数转换器、图象系列处理器、PDP驱动电路、PDP专用开关电源和PDP显示模块组成的交流表面放电型PDP系统中,其特征在于在测量、绘出PDP显示屏模块的红色通道电光响应曲线,绿色通道电光响应曲线和蓝色通道电光响应曲线的基础上,确定各色彩分量的校正曲线,通过在0-256之间取值,计算出的各色彩分量的矫正表,以查表的方式加入到视频处理过程后端的校正查表处理电路中。
2.根据权利要求1所述的提高等离子显示器图像清晰度的方法,其特征在于测量PDP显示屏模块的红色通道电光响应曲线,绿色通道电光响应曲线和蓝色通道电光响应曲线的方法如下设置PDP显示屏绿色通道G
输入值为零,蓝色通道B
输入值为零,让红色通道R
输入值在0,1,2.......255变化,用亮度计测量PDP显示屏对应的输出亮度值,并绘制出PDP显示屏的红色通道的亮度响应曲线O_Gr(x,v);设置PDP显示屏红色通道R
,蓝色通道B
输入为零,让绿色通道G
输入值在0,1,2.......255变化,用亮度计测量PDP显示屏对应的输出亮度值,并绘制出PDP显示屏的绿色通道的亮度响应曲线O_Gg(x,v);设置PDP显示屏红色通道R
,绿色通道G
输入为零,让蓝色通道B
输入值在0,1,2........255变化,用亮度计测量PDP显示屏对应的输出亮度值,并绘制出PDP显示屏的蓝色通道的亮度响应曲线O_Gb(x,v)。
3.根据权利要求1所述的提高等离子显示器图像清晰度的方法,其特征在于校正查表处理电路的算法如下在绘制出PDP显示屏的红色通道、绿色通道和蓝色通道的亮度响应曲线的基础上,确定校正曲线Cr(x,v)=1/(O_Gr(x,v)*I-Gr(x,v)),x取值在0到255之间,得到红色通道由256个数值构成的矫正表;Cg(x,v)=1/(O_Gg(x,v)*I-Gg(x,v)),x取值在0到255之间,得到绿色通道由256个数值构成的矫正表;Cb(x,v)=1/(O_Gb(x,v)*I-Gb(x,v)),x取值在0到255之间,得到蓝色通道由256个数值构成的矫正表;其中,I_Gr(x,v),I_Gg(x,v),I_Gb(x,v)分别为输入信号R,G,B各成分对应的电平亮度响应曲线。
4.根据权利要求3所述的提高等离子显示器图像清晰度的方法,其特征在于红色通道由256个数值构成的矫正表如下0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x4,0x4,0x4,0x4,0x4,0x4,0x5,0x5,0x5,0x5,0x5,0x6,0x6,0x6,0x6,0x7,0x7,0x7,0x7,0x7,0x8,0x8,0x8,0x9,0x9,0x9,0x9,0xA,0xA,0xA,0xB,0xB,0xB,0xC,0xC,0xC,0xD,0xD,0xD,0xE,0xE,0xE,0xF,0xF,0x10,0x10,0x10,0x11,0x11,0x12,0x12,0x13,0x13,0x14,0x14,0x14,0x15,0x15,0x16,0x16,0x17,0x17,0x18,0x19,0x19,0x1A,0x1A,0x1B,0x1B,0x1C,0x1D,0x1D,0x1E,0x1E,0x1E,0x20,0x20,0x21,0x22,0x22,0x23,0x24,0x24,0x25,0x26,0x26,0x27,0x28,0x29,0x29,0x2A,0x2B,0x2C,0x2C,0x2D,0x2E,0x2F,0x30,0x3 1,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,0x50,0x52,0x53,0x54,0x55,0x56,0x58,0x59,0x5A,0x5B,0x5D,0x5E,0x5F,0x60,0x62,0x63,0x64,0x66,0x67,0x69,0x6A,0x6B,0x6D,0x6E,0x70,0x7 1,0x72,0x74,0x75,0x77,0x78,0x7A,0x7B,0x7D,0x7E,0x80,0x82,0x83,0x85,0x86,0x88,0x8A,0x8B,0x8D,0x8F,0x90,0x92,0x94,0x95,0x97,0x99,0x9B,0x9C,0x9E,0xA0,0xA2,0xA4,0xA5,0xA7,0xA9,0xAB,0xAD绿色通道由256个数值构成的矫正表如下,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x4,0x4,0x4,0x4,0x4,0x5,0x5,0x5,0x5,0x5,0x6,0x6,0x6,0x6,0x7,0x7,0x7,0x7,0x8,0x8,0x8,0x9,0x9,0x9,0xA,0xA,0xA,0xB,0xB,0xB,0xC,0xC,0xC,0xD,0xD,0xE,0xE,0xE,0xF,0xF,0x10,0x10,0x11,0x11,0x12,0x12,0x13,0x13,0x14,0x14,0x15,0x15,0x16,0x16,0x17,0x17,0x18,0x19,0x19,0x1A,0x1A,0x1B,0x1C,0x1C,0x1D,0x1E,0x1E,0x1F,0x20,0x20,0x21,0x22,0x23,0x23,0x24,0x25,0x26,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2B,0x2C,0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,0x40,0x41,0x42,0x43,0x45,0x46,0x47,0x48,0x49,0x4A,0x4C,0x4D,0x4E,0x4F,0x51,0x52,0x53,0x55,0x56,0x57,0x59,0x5A,0x5B,0x5D,0x5E,0x60,0x61,0x63,0x64,0x66,0x67,0x69,0x6A,0x6C,0x6D,0x6F,0x70,0x72,0x73,0x75,0x77,0x78,0x7A,0x7C,0x7D,0x7F,0x81,0x83,0x84,0x86,0x88,0x8A,0x8C,0x8D,0x8F,0x91,0x93,0x95,0x97,0x99,0x9B,0x9D,0x9F,0xA1,0xA3,0xA5,0xA7,0xA9,0xAB,0xAD,0xAF,0xB1,0xB3,0xB5,0xB8,0xBA,0xBC,0xBE,0xC0,0xC3,0xC5,0xC7,0xC9,0xCC,0xCE,0xD1,0xD3,0xD5,0xD8,0xDA,0xDD,0xDF,0xE1,0xE4蓝色通道由256个数值构成的矫正表如下,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x1,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x2,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x4,0x4,0x4,0x4,0x4,0x5,0x5,0x5,0x5,0x6,0x6,0x6,0x6,0x7,0x7,0x7,0x7,0x8,0x8,0x8,0x9,0x9,0x9,0xA,0xA,0xA,0xB,0xB,0xB,0xC,0xC,0xD,0xD,0xD,0xE,0xE,0xF,0xF,0x10,0x10,0x11,0x11,0x12,0x12,0x13,0x13,0x14,0x14,0x15,0x15,0x16,0x16,0x17,0x18,0x18,0x19,0x19,0x1A,0x1B,0x1B,0x1C,0x1D,0x1D,0x1E,0x1F,0x20,0x20,0x21,0x22,0x23,0x23,0x24,0x25,0x26,0x27,0x27,0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,0x30,0x31,0x32,0x32,0x33,0x34,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,0x40,0x42,0x43,0x44,0x45,0x46,0x48,0x49,0x4A,0x4B,0x4D,0x4E,0x4F,0x51,0x52,0x53,0x55,0x56,0x57,0x59,0x5A,0x5C,0x5D,0x5F,0x60,0x62,0x63,0x65,0x66,0x68,0x69,0x6B,0x6D,0x6E,0x70,0x72,0x73,0x75,0x77,0x78,0x7A,0x7C,0x7E,0x7F,0x81,0x83,0x85,0x87,0x89,0x8A,0x8C,0x8E,0x90,0x92,0x94,0x96,0x98,0x9A,0x9C,0x9E,0xA0,0xA2,0xA4,0xA7,0xA9,0xAB,0xAD,0xAF,0xB1,0xB4,0xB6,0xB8,0xBA,0xBD,0xBF,0xC1,0xC4,0xC6,0xC8,0xCB,0xCD,0xD0,0xD2,0xD5,0xD7,0xDA,0xDC,0xDF,0xE1,0xE4,0xE7,0xE9,0xEC,0xEF,0xF1,0xF4,0xF7,0xF9,0xFC,0xFF
5.根据权利要求4所述的提高等离子显示器图像清晰度的方法,其特征在于上述3张表中数值为十六进制。
全文摘要
本发明为一种提高彩色等离子显示器图像清晰度的方法,其特征在于,通过测量并绘制出PDP显示屏的红色通道,绿色通道和蓝色通道的亮度响应曲线,确定各色彩分量的校正曲线,依据所计算出的各色彩分量的校正曲线计算各通道的输出电平值,得到各由256个数值构成的红色通道,绿色通道和蓝色通道的矫正表,把所得到的三张矫正表以查表的方式加入到视频处理过程中。本方法能更好地发挥等离子显示屏(PDP)的显示效果,更多地表现出视频图像的灰度等级和色彩透亮度。
文档编号G09G3/28GK1388502SQ01145
公开日2003年1月1日 申请日期2001年12月30日 优先权日2001年12月30日
发明者刘一清 申请人:上海真空电子数字技术发展有限公司