公开(公告)号：US06741277B1

公开(公告)日：2004-05-25

申请号：US09591826

申请日：2000-06-12

申请人： Arun N. Rau

发明人： Arun N. Rau

IPC分类号： H04N1702

CPC分类号： H04N17/04 ,  H04N17/004

摘要： There is disclosed a system and method for the automated testing of digital television receivers. The automated test system comprises a digital video signal unit capable of sending a digital video test pattern to a digital television receiver. The digital video signal unit is capable of receiving from the digital television receiver a reconstructed digital video signal representing the digital video test pattern as displayed by the digital receiver television receiver. The automated test system comprises a test processing unit that is capable of comparing the digital video test pattern with the reconstructed digital video signal to determine the video quality of operation of the digital television receiver. The system and method of the present invention compares the digital video test pattern and the reconstructed digital video signal by 1) comparing the amount of jitter, and 2) comparing the signal to noise ratio, and 3) computing percentage similarity between an image block of each of the two video signals.

摘要翻译： 公开了一种用于数字电视接收机的自动测试的系统和方法。 该自动测试系统包括能够向数字电视接收机发送数字视频测试模式的数字视频信号单元。 数字视频信号单元能够从数字电视接收机接收表示由数字接收机电视接收机显示的数字视频测试模式的重建数字视频信号。 该自动测试系统包括能够将数字视频测试模式与重建的数字视频信号进行比较的测试处理单元，以确定数字电视接收机的视频操作质量。 本发明的系统和方法通过以下步骤比较数字视频测试模式和重构数字视频信号：1）比较抖动量，2）比较信噪比，3）计算图像块之间的百分比相似度 两个视频信号中的每一个。

公开(公告)号：US06791520B2

公开(公告)日：2004-09-14

申请号：US09978055

申请日：2001-10-17

申请人： Hyoung Rack Choi

发明人： Hyoung Rack Choi

IPC分类号： H04N1702

CPC分类号： G09G3/3648 ,  G09G2320/0257 ,  G09G2360/145

摘要： A method for measuring an image-sticking defect in a liquid crystal display device includes steps of irradiating light from a backlight to the liquid crystal display device, displaying a first full white state on a liquid crystal display screen of the liquid crystal display device to which the light is irradiated, measuring first luminance values of a plurality of designated points on the liquid crystal display screen, calculating an average luminance value of the first full white state using the first luminance values, displaying a full black state on the liquid crystal display screen, measuring second luminance values of the plurality of designated points on the liquid crystal display screen, calculating an average luminance value of the full black state using the second luminance values, forming a gray scale using the average luminance value of the first full white states and the average luminance value of the full black state, displaying a second full white state on the liquid crystal display screen, and measuring a luminance change of the second full white state with time at the plurality of designated points using the gray scale.

摘要翻译： 一种用于测量液晶显示装置中的图像粘附缺陷的方法包括以下步骤：将来自背光源的光照射到液晶显示装置，在液晶显示装置的液晶显示屏上显示第一全白态， 照射光，测量液晶显示屏上的多个指定点的第一亮度值，使用第一亮度值计算第一全白状态的平均亮度值，在液晶显示屏上显示全黑状态 测量液晶显示屏上的多个指定点的第二亮度值，使用第二亮度值计算全黑状态的平均亮度值，使用第一全白状态的平均亮度值形成灰度;以及 全黑状态的平均亮度值，在液体哭泣上显示第二满白色状态 并且使用灰度在多个指定点处测量第二全白状态随时间的亮度变化。

公开(公告)号：US06744464B2

公开(公告)日：2004-06-01

申请号：US09881946

申请日：2001-06-15

申请人： Kaihua Huang

发明人： Kaihua Huang

IPC分类号： H04N1702

CPC分类号： H04N17/02

摘要： This invention relates to an apparatus and method for real-time testing of television picture colors. It can conduct real-time testing and adjusting of colors at various pixels to make tree and grass greener. The apparatus in accordance with the present invention includes a chromatic-coordinate testing circuit and a chromatic-coordinate bias circuit for each set color and configuring them between the television signal output and the video-driving amplifier. The pixel identified by the chromatic-coordinate testing circuit is the pixel to be adjusted. The chromatic-coordinate bias circuit controls and changes the bias current or bias voltage output to the video-driving amplifier in color television sets so that the connected three-color electron gun produces color bias effects on the monitor screen.

摘要翻译： 本发明涉及电视图像颜色的实时测试装置和方法。 它可以进行各种像素的实时测试和颜色调整，使树木和草坪更加绿色。 根据本发明的装置包括用于每种设定的颜色的色坐标测试电路和色坐标偏置电路，并且在电视信号输出和视频驱动放大器之间进行配置。 由色坐标测试电路识别的像素是要调整的像素。 彩色坐标偏置电路控制并改变输出到彩色电视机中的视频驱动放大器的偏置电流或偏置电压，使得所连接的三色电子枪在监视器屏幕上产生色偏。

公开(公告)号：US06556238B1

公开(公告)日：2003-04-29

申请号：US09630365

申请日：2000-08-01

申请人： Satoru Abe ,  Yoshiyuki Abe ,  Kihei Yoshida ,  Yasushi Kasuga ,  Tadashi Kenmotsu

发明人： Satoru Abe ,  Yoshiyuki Abe ,  Kihei Yoshida ,  Yasushi Kasuga ,  Tadashi Kenmotsu

IPC分类号： H04N1702

CPC分类号： H04N17/02 ,  H04N7/0122

摘要： A color-bar signal generation unit compatible with a plurality of television signal formats is provided. The color-bar signal generation unit in accordance with the present invention includes first, second, and third color-bar signal generators for generating a color-bar signal that represents a 16:9 aspect ratio color-bar test pattern, and a color-bar signal switch for switching outputs of the generators. The color-bar signal is structured to contain a 75% color-bar signal and 100% color-bar signals. The 75% color-bar signal represents a portion of the color-bar test pattern defined with an aspect ratio of 4:3 and serves as an NTSC color-bar signal. The 100% color-bar signals represent portions of the color-bar test pattern outside the portion with the aspect ratio of 4:3 and serve as components of an HD color-bar signal. Consequently, the color-bar signal can be used in common for the HD format stipulating the aspect ratio of 16:9 and the NTSC format stipulating the aspect ratio of 4:3.

摘要翻译： 提供了与多个电视信号格式兼容的彩条信号生成单元。 根据本发明的彩条信号生成单元包括用于产生表示16:9长宽比色条测试图案的彩条信号的第一，第二和第三颜色条信号发生器， bar信号开关用于切换发电机的输出。 彩条信号被构造为包含75％的彩条信号和100％的彩条信号。 75％颜色条信号表示以纵横比为4：3定义的彩条测试图案的一部分，并用作NTSC彩条信号。 100％的颜色条信号表示长宽比为4:3的部分之外的颜色条测试图案的部分，并且用作HD彩条信号的分量。 因此，对于规定16:9的宽高比的HD格式和规定纵横比为4:3的NTSC格式，可以使用彩条信号。

公开(公告)号：US06567117B1

公开(公告)日：2003-05-20

申请号：US09392736

申请日：1999-09-09

申请人： Hiroyuki Nago ,  Mineo Shoman ,  Koji Fukuda ,  Hiroyuki Yamaguchi

发明人： Hiroyuki Nago ,  Mineo Shoman ,  Koji Fukuda ,  Hiroyuki Yamaguchi

IPC分类号： H04N1702

CPC分类号： H04N19/587 ,  H04N19/115 ,  H04N19/132 ,  H04N19/149 ,  H04N19/154 ,  H04N19/172 ,  H04N19/196 ,  H04N19/60

摘要： In a regulation of a total image quality for an encoded picture, parameter conversion data which define applicable coding bit rates and coding frame rates for each image format are previously stored in a storage 13. An image quality regulating parameter is input through a parameter input section 11 and is used as a key in an image quality regulator 12 to make a reference to the parameter conversion data in the storage 13 in order to determine a coding frame rate and an image format. By delivering the coding frame rate and the image format to picture encoding means, a regulation of a total image quality is achieved through a single operation without independently operating two parameters, the image format and the frame rate.

摘要翻译： 在对编码图像的总图像质量的调节中，将针对每个图像格式定义适用的编码比特率和编码帧速率的参数转换数据预先存储在存储器13中。图像质量调节参数通过参数输入部分 并且在图像质量调节器12中用作键以参考存储器13中的参数转换数据，以便确定编码帧速率和图像格式。 通过将编码帧速率和图像格式提供给图像编码装置，通过单个操作实现总图像质量的调节，而不需要独立地操作两个参数，即图像格式和帧速率。

公开(公告)号：US06441847B1

公开(公告)日：2002-08-27

申请号：US09319087

申请日：1999-08-23

申请人： Hermann Link ,  Stefan Schradi

发明人： Hermann Link ,  Stefan Schradi

IPC分类号： H04N1702

CPC分类号： H04N17/04 ,  H04B7/082 ,  H04N5/21

摘要： The invention concerns a method for determining the quality of a video and/or television image signal. In diversity reception installations comprising several receivers, it is necessary to establish a criterion for assessing the reception signals, so as to select the receiver with the best reception. In order to determine the quality of a television image, the interfering impulses appearing in a line after a horizontal synchronization impulse are detected then their parameters are evaluated. The invention is applicable to television receivers, video recorders, diversity reception installations, in particular for mobile installations.

摘要翻译： 本发明涉及一种用于确定视频和/或电视图像信号的质量的方法。 在包含多个接收机的分集接收设备中，需要建立用于评估接收信号的标准，以便选择具有最佳接收的接收机。 为了确定电视图像的质量，检测出在水平同步脉冲之后出现在一行中的干扰脉冲，然后评估它们的参数。 本发明适用于电视接收机，录像机，分集接收装置，特别是用于移动设备。

公开(公告)号：US06195123B1

公开(公告)日：2001-02-27

申请号：US09047898

申请日：1998-03-25

申请人： Takeyuki Meguro ,  Mitsugi Yui

发明人： Takeyuki Meguro ,  Mitsugi Yui

IPC分类号： H04N1702

CPC分类号： H04N3/27 ,  H04N3/223 ,  H04N3/227

摘要： A method of automatically adjusting a CRT color monitor screen and a CRT color monitor are provided in which the horizontal position and size in a horizontal frequency of 100 kHz or so are adjusted at an acceptable accuracy thus reducing the overall cost by steps of examining with a comparison circuit 6, a one-shot circuit 7, and a microcomputer 9 whether a location determining pulse overlaps with a synthetic signal or not while shifting the phase of the location determining pulse in relation to a horizontal synchronizing signal HD, detecting the location of picture signal part of a video signal relative to the horizontal synchronizing signal HD from the result of examination, and automatically adjusting the horizontal position and the horizontal size on the screen in accordance with the result of detection.

摘要翻译： 提供了一种自动调整CRT彩色监视器屏幕和CRT彩色监视器的方法，其中以100kHz左右的水平频率的水平位置和尺寸以可接受的精度进行调整，从而通过以下步骤进行检查来降低整体成本： 比较电路6，单触发电路7和微型计算机9，位置确定脉冲是否与合成信号重叠，同时相对于水平同步信号HD移位位置确定脉冲的相位，检测图像的位置 根据检查结果，相对于水平同步信号HD的视频信号的一部分信号，并根据检测结果自动调整屏幕上的水平位置和水平尺寸。

公开(公告)号：US06587139B1

公开(公告)日：2003-07-01

申请号：US09707934

申请日：2000-11-08

申请人： Yoshichika Hirao

发明人： Yoshichika Hirao

IPC分类号： H04N1702

CPC分类号： G09G5/008 ,  G09G5/18 ,  H04N5/08 ,  H04N17/00

摘要： Disclosed is a period measuring device comprising a clamping circuit to which a synchronizing signal in an input image signal is inputted, a comparator for removing noise in the synchronizing signal outputted from the clamping circuit, period measuring circuit for measuring the period of the synchronizing signal on the basis of the synchronizing signal obtained by the comparator, judging circuit for judging whether or not the period of the synchronizing signal which has been measured by the period measuring circuit is stable, and a control circuit for controlling, when the judging circuit judges that the period of the synchronizing signal is not stable, a threshold voltage of the comparator such that the period of the synchronizing signal is stabilized.

摘要翻译： 公开了一种周期测量装置，包括：输入图像信号中的同步信号被输入的钳位电路，用于去除从钳位电路输出的同步信号中的噪声的比较器，用于测量同步信号的周期的周期测量电路 由比较器获得的同步信号的基础，判断电路，用于判断由周期测量电路测量的同步信号的周期是否稳定;以及控制电路，用于当判断电路判断为 同步信号的周期不稳定，比较器的阈值电压使得同步信号的周期稳定。

公开(公告)号：US06489988B1

公开(公告)日：2002-12-03

申请号：US09012858

申请日：1998-01-23

申请人： Takahiro Hamada ,  Satoshi Miyaji ,  Shuichi Matsumoto

发明人： Takahiro Hamada ,  Satoshi Miyaji ,  Shuichi Matsumoto

IPC分类号： H04N1702

CPC分类号： H04N17/06 ,  H04N17/004

摘要： This invention aims to provide a method and apparatus for detecting a synchronization shift in which the synchronization shift between an original image and a reproduced image can be accurately detected even if noises are generated by a video codec or the like. An original image sent out from an image source 1 has a sine wave for synchronization overwritten thereon in a frame memory. The image on which the sine wave has been overwritten is decoded in a codec and stored in another frame memory. The two images srored. in two frame memories are simultaneously started to be read out. From the image from the other frame memory, only the sine wave is extracted in a notch filter, subjected to an offset correction in an adder, and inputted to asynchronization shift detecting unit. The synchronization shift detecting unit uses the sine wave to detect line, frame and horizontal pixel shifts. Since a sine wave is used as a synchronization marker and only the sine wave is extracted in the notch filter, the synchronization shift can be accurately detected.

摘要翻译： 本发明的目的在于提供一种用于检测同步偏移的方法和装置，其中即使通过视频编解码器等产生噪声也能够准确地检测原始图像和再现图像之间的同步偏移。 从图像源1发送的原始图像在帧存储器中具有用于同步的正弦波。 已经覆盖了正弦波的图像以编码解码器解码并存储在另一个帧存储器中。 这两个图像被扫描。 同时开始在两帧存储器中读出。 从另一个帧存储器的图像中，只有在陷波滤波器中提取正弦波，在加法器中进行偏移校正，并输入到异步移位检测单元。 同步移位检测单元使用正弦波来检测线，帧和水平像素移位。 由于使用正弦波作为同步标记，并且仅在陷波滤波器中提取正弦波，因此可以准确地检测同步偏移。

公开(公告)号：US06310646B1

公开(公告)日：2001-10-30

申请号：US08979104

申请日：1997-11-26

申请人： Pingnan Shi ,  Andrew E. Bowyer ,  Qin Zhang

发明人： Pingnan Shi ,  Andrew E. Bowyer ,  Qin Zhang

IPC分类号： H04N1702

CPC分类号： H04N17/00 ,  H04B17/23 ,  H04B17/309 ,  H04N5/4446 ,  H04N5/455 ,  H04N21/44209 ,  H04N21/6118

摘要： Disclosed are method and apparatus which measure signal level of an RF signal. The measured RF signal includes a baseband signal modulated onto a first carrier signal having a first frequency and the baseband signal includes program information and control information. The method and apparatus digitize the RF signal which includes the baseband control information and determine a signal level measurement from the baseband control information in the digitized RF signal. Furthermore, method and apparatus are disclosed which determine from the digitized RF signal whether a tagging signal is present in the RF signal.

摘要翻译： 公开了测量RF信号的信号电平的方法和装置。 测量的RF信号包括调制到具有第一频率的第一载波信号的基带信号，并且基带信号包括节目信息和控制信息。 该方法和装置对包括基带控制信息的RF信号进行数字化，并根据数字化RF信号中的基带控制信息确定信号电平测量。 此外，公开了从数字化RF信号确定RF信号中是否存在标记信号的方法和装置。