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公开(公告)号：US5654770A
公开(公告)日：1997-08-05
申请号：US326694
申请日：1994-10-20
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： A device that separates a luminance signal and a chrominance signal from an input composite color television signal, suppressing cross color interference and keeping a good color transient characteristic, by selecting characteristics of the color bandpass filters according to a vertical correlation value after obtaining a chrominance signal at an adaptive type comb filters. The apparatus includes a cascade connection of a plurality of delay devices each one of which delays one horizontal period; a correlation detecting circuit for outputting correlation values between the reference signal and a signal at the vertical vicinity of the point of the reference signal on the screen, where an output signal of the central delay device is regarded as a reference signal; comb filters for separating a chrominance signal from the composite color television signal; a plurality of bandpass filters for limiting the bandwidth of the chrominance signal obtained at the comb filters; and a mixing circuit for mixing the outputs of the bandpass filters according to the correlation values between the reference signal and the signal at the vertical vicinity of the point of the reference signal.
摘要翻译： 通过在获得色度信号之后根据垂直相关值选择色带通滤波器的特性，分离来自输入的复合彩色电视信号的亮度信号和色度信号，抑制交叉色干扰并保持良好的色彩瞬变特性的装置 在自适应型梳状滤波器。 该装置包括多个延迟装置的级联连接，每个延迟装置延迟一个水平周期; 相关检测电路，用于输出参考信号和屏幕上参考信号点的垂直附近的信号之间的相关值，其中中央延迟装置的输出信号被认为是参考信号; 梳状滤波器，用于从复合彩色电视信号中分离色度信号; 多个带通滤波器，用于限制在梳状滤波器处获得的色度信号的带宽; 以及混合电路，用于根据参考信号和参考信号点的垂直附近的信号之间的相关值混合带通滤波器的输出。
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公开(公告)号：US5627600A
公开(公告)日：1997-05-06
申请号：US688232
申请日：1996-07-29
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： A device that separates a luminance signal and a chrominance signal from an input composite color television signal, suppressing cross color interference and keeping a good color transient characteristic, by selecting characteristics of the color bandpass filters according to a vertical correlation value after obtaining a chrominance signal at an adaptive type comb filters. The apparatus includes a cascade connection of a plurality of delay devices each one of which delays one horizontal period; chrominance correlation detecting circuits for obtaining correlation of a chrominance signal between a reference signal and a signal at the vertical vicinity of the point of the reference signal on the screen, where an output signal of the central delay device is regarded as a reference signal; luminance correlation detecting circuits for obtaining correlation of a luminance signal between the reference signal and a signal at the vertical vicinity of the point of the reference signal on the screen; a correlation judging circuit for judging if there is correlation from the correlation of the chrominance signals and the correlation of the luminance signals; comb filters for separating a chrominance signal from the composite color television signal; and a selector for selecting an output of the comb filters according to the judgment of the correlation.
摘要翻译： 通过在获得色度信号之后根据垂直相关值选择色带通滤波器的特性，分离来自输入的复合彩色电视信号的亮度信号和色度信号，抑制交叉色干扰并保持良好的色彩瞬变特性的装置 在自适应型梳状滤波器。 该装置包括多个延迟装置的级联连接，每个延迟装置延迟一个水平周期; 色度相关检测电路，用于获得参考信号与屏幕上参考信号点的垂直附近的信号之间的色度信号的相关性，其中中央延迟装置的输出信号被认为是参考信号; 亮度相关检测电路，用于获得参考信号与屏幕上参考信号点的垂直附近的信号之间的亮度信号的相关性; 相关判断电路，用于根据色度信号的相关性和亮度信号的相关性来判断是否存在相关性; 梳状滤波器，用于从复合彩色电视信号中分离色度信号; 以及选择器，用于根据相关性的判断来选择梳状滤波器的输出。
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公开(公告)号：US5500687A
公开(公告)日：1996-03-19
申请号：US327317
申请日：1994-10-21
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： A chrominance signal can be separated from a composite color television signal without misdetection in correlation detection even when the chrominance signal level is small by calculating vertical correlation values, comparing them with the threshold value corresponding to the chrominance signal level and judging if there is correlation or not. A chrominance signal separating apparatus includes a cascade connection of delay devices, where each delay device delays an input signal by 1H period. Comb filters separate a luminance signal and a chrominance signal from the composite color television signal by inputting two signals from the input and the output of each delay device which have a 1H period time difference. The output of one of the delay devices is regarded as a reference signal. A correlation detecting circuit calculates correlation values between the reference signal and a signal at the vertical vicinity of the reference signal on the screen. A level detecting circuit detects the level of the composite color television signal. Comparators compare the output of the correlation detecting circuit and the output of the level detecting circuit. A mixing circuit mixes the outputs of the comb filters based on the output of the comparators.
摘要翻译： 即使当色度信号电平较小时，通过计算垂直相关值，将色度信号与复合彩色电视信号分离，也可以在相关检测中没有错误检测，将其与与色度信号电平相对应的阈值进行比较，并判断是否存在相关性 不。 色度信号分离装置包括延迟装置的级联，其中每个延迟装置将输入信号延迟1H周期。 梳状滤波器通过从具有1H周期时间差的每个延迟装置的输入和输出输入两个信号，从复合彩色电视信号中分离亮度信号和色度信号。 一个延迟装置的输出被认为是参考信号。 相关检测电路计算参考信号和屏幕上参考信号的垂直附近的信号之间的相关值。 电平检测电路检测复合彩色电视信号的电平。 比较器将相关检测电路的输出与电平检测电路的输出进行比较。 混合电路根据比较器的输出混合梳状滤波器的输出。
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公开(公告)号：US07679684B2
公开(公告)日：2010-03-16
申请号：US10597768
申请日：2005-02-08
申请人： Susumu Miura , Takahisa Hatano , Kosho Suzuki
发明人： Susumu Miura , Takahisa Hatano , Kosho Suzuki
IPC分类号： H04N9/64
CPC分类号： H04N9/73
摘要： During adjustment of a white balance, images having different white balances are displayed respectively on a plurality of regions on the screen 201 of the display 200, based on the red video signal Rout, the green video signal Gout and the blue video signal Bout output from the gamma correction device 30. After that, an user selects any of the plurality of regions by comparing the plurality of images having the different white balances displayed on the regions A to I on the screen 201 of the display 200 and pressing a touch panel on the screen 201. The image on the selected region is displayed on the entire screen 201 of the display 200, based on the red video signal Rout, the green video signal Gout and the blue video signal Bout output from the gamma correction device 30.
摘要翻译： 在白平衡的调整期间，基于红色视频信号Rout，绿色视频信号Gout和蓝色视频信号Bout从显示器200的屏幕201上的多个区域分别显示具有不同白平衡的图像。 伽玛校正装置30.之后，用户通过在显示器200的屏幕201上比较在区域A至I上显示的具有不同白平衡的多个图像并按下触摸面板来选择多个区域中的任一个 基于从伽马校正装置30输出的红色视频信号Rout，绿色视频信号Gout和蓝色视频信号Bout，在显示器200的整个屏幕201上显示所选区域上的图像。
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5.发明授权Dot clock reproducing method and dot clock reproducing apparatus using the same 失效点时钟再现方法和使用其的点时钟再现装置
公开(公告)号：US5940136A
公开(公告)日：1999-08-17
申请号：US852189
申请日：1997-05-06
申请人： Hideki Abe , Noriyuki Iwakura , Takahisa Hatano , Yoshikuni Shindo , Kazuhiro Yamada , Kazushige Kida , Kazunari Yamaguchi
发明人： Hideki Abe , Noriyuki Iwakura , Takahisa Hatano , Yoshikuni Shindo , Kazuhiro Yamada , Kazushige Kida , Kazunari Yamaguchi
CPC分类号： G09G5/008 , G09G3/3611
摘要： The invention presents a dot clock reproducing apparatus for automatically reproducing the dot clock easily, by setting the dot clock frequency of a video signal source, and correcting the phase difference of the dot clock occurring in the transmission route or the like, and also presents a dot clock reproducing method comprising, in dot clock reproduction, a step of sampling at a frequency different from the dot clock of video signal, a step of detecting the aliasing frequency component occurring at this time, and a step of reproducing the dot clock so as not to cause this aliasing frequency component, and as an apparatus employing such method, the invention further provides a dot clock reproducing apparatus comprising A/D converting means for receiving an adjusting signal delivered from a video signal source, and sampling this adjusting signal to convert into a digital signal, PLL means for dividing a specified synchronizing signal and generating a sampling clock for the A/D converting means, frequency analyzing means for analyzing the frequency of the adjusting signal from the output of the A/D converting means, and dividing ratio setting means for controlling the dividing ratio of the PLL means from the output of the frequency analyzing means, wherein the dot clock is reproduced so that the output of the PLL means may be used as the dot clock signal, thereby realizing a dot clock reproducing apparatus for reproducing automatically the dot clock easily, by setting the dot clock frequency of the video signal source, and correcting the phase difference of the dot clock occurring in the transmission route or the like.
摘要翻译： 本发明提供了一种点时钟再现装置，用于通过设置视频信号源的点时钟频率和校正发送在发送路由等中的点时钟的相位差来自动轻松地再现点时钟，并且还呈现 点时钟再现方法包括点对点再现，以与视频信号的点时钟不同的频率进行采样的步骤，检测此时出现的混叠频率分量的步骤，以及再现点时钟的步骤，以便 不会引起该混叠频率成分，作为使用这种方法的装置，本发明还提供一种点时钟再现装置，包括A / D转换装置，用于接收从视频信号源传送的调整信号，并对该调整信号进行采样以转换 成为数字信号，PLL装置用于对指定的同步信号进行分频并产生用于A / D转换的采样时钟 ng装置，用于分析来自A / D转换装置的输出的调节信号的频率的频率分析装置和用于从频率分析装置的输出控制PLL装置的分频比的分频比设置装置，其中， 点时钟被再现，使得PLL装置的输出可以用作点时钟信号，从而实现点时钟再现装置，用于通过设置视频信号源的点时钟频率来自动地再现点时钟，并且校正 发送在发送路由等中的点时钟的相位差。
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公开(公告)号：US5748260A
公开(公告)日：1998-05-05
申请号：US393804
申请日：1995-02-24
申请人： Takahisa Hatano
发明人： Takahisa Hatano
CPC分类号： H04N9/78
摘要： A luminance and chrominance signal separating apparatus includes an A/D converter for A/D converting an input composite color television signal by a frequency of eight times of a color subcarrier frequency; a decimation filter for converting the A/D converted digital video signal into a signal with a frequency of four times of the color subcarrier frequency; a chrominance signal separating circuit for extracting a chrominance signal from the signal which was thinned-out by the frequency of four times of the color subcarrier frequency; an interpolating filter for converting the separated chrominance signal into a signal with a frequency of eight times the color subcarrier frequency and outputting a chrominance signal; a delay device for delaying the A/D converted digital video signal by a delay time which occurs when the A/D converted digital video signal passes through the decimation filter, the chrominance signal separator and the interpolating filter; and a subtracting circuit for subtracting the chrominance signal at the output of the interpolating filter from the digital video signal at the output of the delay device and outputting a luminance signal.
摘要翻译： 亮度和色度信号分离装置包括A / D转换器，用于将彩色副载波频率的八倍的频率对输入的复合彩色电视信号进行A / D转换; 用于将A / D转换的数字视频信号转换成具有彩色副载波频率的四倍的频率的信号的抽取滤波器; 色度信号分离电路，用于从由彩色副载波频率的四倍的频率被稀疏的信号中提取色度信号; 用于将分离的色度信号转换成具有彩色副载波频率的八倍的频率的信号并输出色度信号的内插滤波器; 延迟装置，用于在A / D转换的数字视频信号通过抽取滤波器，色度信号分离器和内插滤波器时延迟A / D转换的数字视频信号延迟时间; 以及减法电路，用于从延迟装置的输出处的数字视频信号中减去内插滤波器的输出处的色度信号，并输出亮度信号。
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公开(公告)号：US5654768A
公开(公告)日：1997-08-05
申请号：US622809
申请日：1996-03-27
申请人： Takahisa Hatano
发明人： Takahisa Hatano
CPC分类号： H04N11/165
摘要： A PAL system demodulator capable of delivering high quality color signals even in the cases of poor vertical correlation comprising 1H delay line 1 delaying the chroma signal by one horizontal period, 1H delay-line 2 delaying a reference signal by one horizontal period wherein the output of the 1H delay line 1 is defined by reference signal, color demodulating circuit 3 canceling hue error by conducting an operation between the scanning lines covering from the input and the output of the 1H delay line 1, color-demodulating circuit 4 canceling the hue error by conducting an operation between the scanning lines covering from the input and the output of the 1H delay line 2, vertical correlation detecting circuit 5 detecting the vertical correlation between the chroma signal of the reference signal and the chroma signal of the adjoining line or the chroma signal of the adjoining line separated by one-line, and selector 6 selecting the output of the color demodulating circuit 3 or the output of color demodulating circuit 4.
摘要翻译： 一种PAL系统解调器，即使在垂直相关差的情况下也能够提供高质量的彩色信号，包括1H延迟线1，将色度信号延迟一个水平周期，1H延迟线2将参考信号延迟一个水平周期，其中输出 1H延迟线1由参考信号定义，颜色解调电路3通过在从1H输入延伸的扫描线和1H延迟线1的输出之间进行操作来消除色调误差，颜色解调电路4通过 在从1H输入延伸线2的输入和输出的扫描线之间进行操作，垂直相关检测电路5检测参考信号的色度信号和邻接线的色度信号或色度信号之间的垂直相关性 由选择器6选择颜色解调电路3的输出或外部输出 色彩解调电路4。
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公开(公告)号：US20090243994A1
公开(公告)日：2009-10-01
申请号：US12298087
申请日：2007-04-18
申请人： Takahisa Hatano , Kosho Suzuki
发明人： Takahisa Hatano , Kosho Suzuki
CPC分类号： H05B41/3927 , G09G3/3406 , G09G2310/08 , G09G2320/064 , G09G2320/0693 , G09G2330/026
摘要： A PWM generation circuit generates a PWM pulse signal having a variable duty ratio in order to control the luminance of a backlight. An edge detection circuit outputs a leading edge signal in response to the rise of the PWM pulse signal generated by the PWM generation circuit. A set value pulse generation circuit generates a set width pulse signal in response to the rise of the leading edge signal. The pulse width of the set width pulse signal is set so as to be larger than the minimum PWM pulse width. An OR gate calculates the logical sum of the set width pulse signal and the PWM pulse signal. An inverter circuit feeds a driving signal to a backlight on the basis of an output signal of the OR gate.
摘要翻译： PWM生成电路生成具有可变占空比的PWM脉冲信号，以便控制背光的亮度。 边沿检测电路响应于由PWM产生电路产生的PWM脉冲信号的上升而输出前沿信号。 设定值脉冲发生电路响应于前沿信号的上升而产生设定的宽度脉冲信号。 设定宽度脉冲信号的脉冲宽度被设定为大于最小PWM脉冲宽度。 或门计算设定宽度脉冲信号和PWM脉冲信号的逻辑和。 逆变器电路基于或门的输出信号将驱动信号馈送到背光源。
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公开(公告)号：US07432982B2
公开(公告)日：2008-10-07
申请号：US10568651
申请日：2004-09-17
CPC分类号： H04N5/44504 , H04N21/4305 , H04N21/431 , H04N21/485 , H04N21/4888
摘要： An On-Screen-Display (OSD) insert circuit includes an OSD signal generator for generating a switching signal and an analog additional image signal based on a first clock signal, an analog-to-digital converter for converting the generated additional image signal into a digital additional image signal based on a second clock signal as a sampling clock signal, a switching circuit for switching between a digital video signal and the digital additional image signal based on the switching signal, and a control-signal generator operable to generate the second clock signal. The digital video signal has a horizontal synchronizing signal. The control-signal generator is operable to reset the first clock signal with a signal having a predetermined phase difference including zero with reference to the horizontal synchronizing signal, and to generate the second clock signal so that a phase of the second clock signal is adjusted with respect to the horizontal synchronizing signal. This OSD insert circuit can insert the analog additional image signal into the digital video signal without converting the digital video signal into an analog signal.
摘要翻译： 屏幕显示（OSD）插入电路包括用于基于第一时钟信号产生切换信号和模拟附加图像信号的OSD信号发生器，用于将所生成的附加图像信号转换成为第一时钟信号的模拟 - 数字转换器 基于作为采样时钟信号的第二时钟信号的数字附加图像信号，用于基于切换信号在数字视频信号和数字附加图像信号之间切换的切换电路，以及可操作以产生第二时钟的控制信号发生器 信号。 数字视频信号具有水平同步信号。 控制信号发生器可操作以使用具有相对于水平同步信号包括零的预定相位差的信号来复位第一时钟信号，并且产生第二时钟信号，从而使第二时钟信号的相位用 相对于水平同步信号。 该OSD插入电路可以将模拟附加图像信号插入数字视频信号，而不将数字视频信号转换为模拟信号。
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公开(公告)号：US20070126934A1
公开(公告)日：2007-06-07
申请号：US10597768
申请日：2005-02-08
申请人： Susumu Miura , Takahisa Hatano , Kosho Suzuki
发明人： Susumu Miura , Takahisa Hatano , Kosho Suzuki
CPC分类号： H04N9/73
摘要： During adjustment of a white balance, images having different white balances are displayed respectively on a plurality of regions on the screen 201 of the display 200, based on the red video signal Rout, the green video signal Gout and the blue video signal Bout output from the gamma correction device 30. After that, an user selects any of the plurality of regions by comparing the plurality of images having the different white balances displayed on the regions A to I on the screen 201 of the display 200 and pressing a touch panel on the screen 201. The image on the selected region is displayed on the entire screen 201 of the display 200, based on the red video signal Rout, the green video signal Gout and the blue video signal Bout output from the gamma correction device 30.
摘要翻译： 在白平衡的调整期间，基于红色视频信号Rout，绿色视频信号Gout和蓝色视频信号Bout从显示器200的屏幕201上的多个区域分别显示具有不同白平衡的图像。 伽马校正装置30。 之后，用户通过在显示器200的屏幕201上比较在区域A至I上显示的具有不同白平衡的多个图像并按下屏幕201上的触摸面板来选择多个区域中的任一个。 基于从伽马校正装置30输出的红色视频信号Rout，绿色视频信号Gout和蓝色视频信号Bout，在显示器200的整个屏幕201上显示所选区域上的图像。
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