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公开(公告)号：US5369444A
公开(公告)日：1994-11-29
申请号：US938047
申请日：1992-11-12
IPC分类号： H04N3/223 , H04N3/27 , H04N5/45 , H04N7/00 , H04N7/01 , H04N9/64 , H04N5/272 , H04N5/04 , H04N5/262 , H04N9/74
CPC分类号： H04N7/0122 , H04N3/223 , H04N3/27 , H04N5/45 , H04N7/007 , H04N7/01 , H04N7/0105 , H04N9/641 , H04N5/50 , Y10S348/91
摘要： First and second field type detectors for first and second video signals have outputs indicating whether the video signals have first or second field types. The first video signal is synchronized with the second video signal for a combined display by a synchronous field memory and an asynchronous multiple line memory. The field type of the second video signal is changed when necessary to match the field type of the first video signal to maintain interlace integrity in the combined display. A field type changing circuit, which controls the synchronizing, has a first mode of operation which delays writing a current field of the first field type by one horizontal line period, a second mode of operation which advances writing a current field of the second field type by one horizontal line period and a third mode of operation which maintains a current field type. A comparison of the field type of the second signal to the field type of the first signal results in an output signal indicating one of a plurality of comparison outcomes, wherein the first and second video signals have the same field type, wherein the first video signal has the first field type and the second video signal has the second field type and wherein the first video signal has the second field type and the second video signal ha the first field type. A plurality of selectable interlace correction signals are generated, each being appropriate for one of the plurality of comparison outcomes.
摘要翻译： PCT No.PCT / US91 / 03741 Sec。 371日期：1992年11月12日 102（e）日期：1992年11月12日PCT 1991年5月29日PCT PCT。 出版物WO91 / 19385 日期为1991年12月12日。用于第一和第二视频信号的第一和第二场型检测器具有指示视频信号是否具有第一或第二场类型的输出。 第一视频信号与第二视频信号同步，用于通过同步场存储器和异步多行存储器的组合显示。 当需要匹配第一视频信号的场类型以维持组合显示中的交错完整性时，改变第二视频信号的场类型。 控制同步的场型改变电路具有第一操作模式，其延迟将第一场类型的当前场写入一个水平行周期;第二操作模式，其进行写第二场类型的当前场 通过一个水平行周期和维持当前场类型的第三操作模式。 第二信号的场类型与第一信号的场类型的比较导致指示多个比较结果之一的输出信号，其中第一和第二视频信号具有相同的场类型，其中第一视频信号 具有第一场类型，第二视频信号具有第二场类型，并且其中第一视频信号具有第二场类型，第二视频信号具有第一场类型。 产生多个可选择的交错校正信号，每个可选择的交错校正信号适合于多个比较结果之一。
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公开(公告)号：US5351087A
公开(公告)日：1994-09-27
申请号：US938233
申请日：1991-05-29
CPC分类号： H04N7/0122 , H04N3/223 , H04N3/27 , H04N5/45 , H04N7/007 , H04N7/01 , H04N7/0105 , H04N9/641
摘要： A two stage interpolation system provides greater bandwidth for signals compressed and expanded by interpolation, for example video signals displayed in a zoom or enlarged mode. A finite impulse response filter generates from a first signal of digital samples a second signal of digital samples representing signal points between the samples of the first signal. The first signal is delayed, but otherwise substantially unmodified. The second signal and the delayed first signal are interleaved, for example by a multiplexer, to produce a third signal of digital values having a sample density twice that of the first signal. A compensated variable interpolator derives from the third signal a fourth signal of digital samples in which the frequency content of information represented by the first signal has been changed. The first signal can have frequency components as high as approximately 40% of the sampling rate for the first signal without significant reduction of bandwidth in the fourth signal, even when expanded. In the case of enlarging the picture represented by a video signal, the video signal can be truncated, for example in a FIFO line memory, prior to being delayed and processed by the finite impulse response filter. The compensated variable interpolator can be controlled, for example by a microprocessor or hardware equivalent, to provide selected ratios of compression or expansion.
摘要翻译： PCT No.PCT / US91 / 03734 Sec。 371日期：1992年10月23日 102（e）日期1992年10月23日PCT 1991年5月29日PCT PCT。 WO91 / 19393 PCT出版物 日期为1991年12月12日。两级插值系统为通过插值压缩和扩展的信号提供更大的带宽，例如以缩放或放大模式显示的视频信号。 有限脉冲响应滤波器从数字样本的第一信号产生表示第一信号的样本之间的信号点的数字样本的第二信号。 第一个信号被延迟，但是基本上未被修改。 第二信号和延迟的第一信号例如由多路复用器进行交织，以产生具有两倍于第一信号的采样密度的数字值的第三信号。 补偿的可变内插器从第三信号中导出数字采样的第四信号，其中由第一信号表示的信息的频率内容已经改变。 即使在扩展时，第一信号可以具有高达第一信号的采样率的大约40％的频率分量，而不会显着降低第四信号中的带宽。 在放大由视频信号表示的图像的情况下，视频信号可以被截断，例如在FIFO行存储器中，在被有限脉冲响应滤波器延迟和处理之前。 补偿的可变内插器可以例如通过微处理器或硬件等效来控制，以提供选定的压缩或扩展比。
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公开(公告)号：US5345270A
公开(公告)日：1994-09-06
申请号：US63480
申请日：1993-05-19
IPC分类号： H04N5/262 , H04N3/223 , H04N3/27 , H04N5/445 , H04N5/45 , H04N7/00 , H04N7/01 , H04N7/08 , H04N9/64 , H04N21/488 , H04N7/04 , H04N5/278
CPC分类号： H04N21/4884 , H04N3/223 , H04N3/27 , H04N5/44513 , H04N5/45 , H04N7/007 , H04N7/01 , H04N7/0105 , H04N7/0122 , H04N7/08 , H04N9/641 , Y10S348/913
摘要： A video display control system comprises: a video display having a wide format display ratio; a letterbox detector for sampling video information in pictures represented by input video signals having a letterbox format and generating a control signal for enlarging the pictures for substantially filling the video display means with active video; and, a first control circuit for restricting operation of the letterbox detector to a vertical range of horizontal lines in each field of the video signal; and, a second control circuit for restricting operation of the letterbox detector to a horizontal range of video data in each of the horizontal lines.
摘要翻译： 视频显示控制系统包括：具有宽格式显示比率的视频显示器; 信箱检测器，用于对由具有信箱格式的输入视频信号表示的图像中的视频信息进行采样，并生成用于放大用于基本上用活动视频填充视频显示装置的图像的控制信号; 以及用于将信箱检测器的操作限制在视频信号的每个场中的水平线的垂直范围的第一控制电路; 以及用于将信箱检测器的操作限制在每条水平线中的视频数据的水平范围的第二控制电路。
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公开(公告)号：US5329369A
公开(公告)日：1994-07-12
申请号：US946346
申请日：1992-11-09
CPC分类号： H04N7/0122 , H04N3/223 , H04N3/27 , H04N5/45 , H04N7/007 , H04N7/01 , H04N7/0105
摘要： A wide screen television apparatus comprises a video display having a first format display ratio of width to height, for example approximately 16.times.9. A first video signal defines a first picture. A second video signal defines a second picture in a second format display ratio of width to height smaller than the first format display ratio, for example approximately 4.times.3. A video signal processor asymmetrically compresses the second picture, for example 4:1 horizontally and 3:1 vertically. A video memory stores lines of video of the asymmetrically compressed picture. Another video signal processor combines portions of lines of video in the first video signal with the stored lines of video of the asymmetrically compressed picture for simultaneous display of the first and second pictures. The asymmetrically compressed second picture is displayed without aspect ratio distortion. The second picture can form an inset within the first picture. A single picture display can itself comprise a full screen of pictures from one source of from multiple sources. A video signal processor for a video display apparatus comprises a circuit for selectively changing the width and height of a picture by first and second factors respectively to control aspect ratio distortion of the picture and a circuit for generating the aspect ratio controlled picture as an output for display by the video display apparatus. The processor includes a circuit for digitizing the video signal, for subsequent subsampling.
摘要翻译： PCT No.PCT / US91 / 03733 Sec。 371日期：1992年11月9日 102（e）日期1992年11月9日PCT 1991年5月29日PCT公布。 WO91 / 19384 PCT出版物 日期：1991年12月12日。宽屏幕电视设备包括具有宽度与高度的第一格式显示比例的视频显示器，例如大约16×9。 第一视频信号定义第一图像。 第二视频信号以比第一格式显示比例小的宽度与高度的第二格式显示比定义第二图像，例如大约4×3。 视频信号处理器不对称地压缩第二图像，例如水平地为4:1，垂直为3:1。 视频存储器存储不对称压缩图像的视频行。 另一个视频信号处理器将第一视频信号中的视频行的部分与存储的不对称压缩图像的视频行相结合，以同时显示第一和第二图像。 显示不对称压缩的第二图像，而不显示纵横比失真。 第二张图片可以在第一张照片中形成一个插图。 单个图像显示器本身可以包括来自多个源的一个源的全屏图像。 用于视频显示装置的视频信号处理器包括用于分别通过第一和第二因素选择性地改变图像的宽度和高度以控制图像的纵横比失真的电路和用于产生纵横比控制图像的电路作为输出 由视频显示装置显示。 处理器包括用于数字化视频信号的电路，用于随后的子采样。
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公开(公告)号：US5285282A
公开(公告)日：1994-02-08
申请号：US945641
申请日：1992-11-06
IPC分类号： H04N5/46 , G06F3/00 , G06T3/40 , G09G5/00 , G09G5/14 , G09G5/377 , G09G5/391 , H04N3/223 , H04N3/227 , H04N3/27 , H04N5/073 , H04N5/14 , H04N5/262 , H04N5/265 , H04N5/44 , H04N5/45 , H04N7/00 , H04N7/01 , H04N7/015 , H04N7/26 , H04N9/64 , H04N11/06 , H04N11/20 , H04N11/24
CPC分类号： H04N9/641 , G06T3/0012 , G06T3/4007 , H04N19/90 , H04N3/223 , H04N3/227 , H04N3/27 , H04N5/2624 , H04N5/45 , H04N7/007 , H04N7/01 , H04N7/0105 , H04N7/0122 , H04N7/015 , H04N9/64
摘要： A display system controls vertical zoom and panning. A video display has a first format display ratio. A circuit, for example one generating a raster, maps on the video display an adjustable picture display area represented in a video signal having a vertical synchronizing component. The picture represented in the video signal has a second format display ratio. A vertical height control circuit, for example one controlling the vertical height of the raster by controlling the vertical deflection current, selectively enlarges the picture display area relative to the video display. A panning control circuit adjusts in phase a vertical blanking interval relative to the vertical synchronizing component to control which portion of the enlarged picture area is displayed and which portion is not displayed. The format display ratios can be the same or different, for example 16.times.9 for the video display and 4.times.3 for the picture, in the latter case.
摘要翻译： PCT No.PCT / US91 / 03822 Sec。 371日期：1992年11月6日 102（e）日期1992年11月6日PCT 1991年5月30日提交。显示系统控制垂直放大和平移。 视频显示具有第一格式显示比率。 例如，生成光栅的电路在视频显示器上映射在具有垂直同步分量的视频信号中表示的可调节图像显示区域。 视频信号中表示的图像具有第二格式显示比。 例如通过控制垂直偏转电流来控制光栅垂直高度的垂直高度控制电路相对于视频显示器选择性地放大图像显示区域。 平移控制电路相对于垂直同步分量相位调整垂直消隐间隔，以控制显示放大图像区域的哪个部分并且不显示哪个部分。 格式显示比可以相同或不同，例如在视频显示中为16 * 9，在后一种情况下为4 * 3。
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公开(公告)号：US5264762A
公开(公告)日：1993-11-23
申请号：US911683
申请日：1992-07-10
申请人： James A. Wilber
发明人： James A. Wilber
摘要： A first voltage-to-current converter responsive to a picture height adjustment control signal generates a first current in a capacitor for producing a trace portion of a sawtooth signal in the capacitor having a rate of change that is adjustable in accordance with an adjustment of the control signal. A second voltage-to-current converter responsive to the control signal generates a second current in a resistor for producing a third signal that is adjustable in accordance with the control signal. The sawtooth and third signals are coupled via a differential amplifier to a vertical deflection winding to produce a vertical deflection current in accordance with a difference between the sawtooth and third signals such that picture height adjustment does not affect vertical centering.
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公开(公告)号：US5216412A
公开(公告)日：1993-06-01
申请号：US620504
申请日：1990-11-30
IPC分类号： H04N3/223
CPC分类号： H04N3/223
摘要： A display monitor includes a conventional CRT and associated display drive circuitry together with conventional horizontal and vertical deflection systems. A high voltage system is operated in response to the horizontal deflection system to produce a CRT accelerating potential. A display size control responds to changes of high voltage system current to produce an error signal which is used to produce compensating amplitude changes of vertical and horizontal deflection currents in order to maintain substantially constant image size.
摘要翻译： 显示器监视器包括常规CRT和相关联的显示驱动电路以及传统的水平和垂直偏转系统。 响应于水平偏转系统操作高电压系统以产生CRT加速电位。 显示尺寸控制响应于高压系统电流的变化，以产生用于产生垂直和水平偏转电流的补偿幅度变化的误差信号，以便保持基本恒定的图像尺寸。
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公开(公告)号：US4682087A
公开(公告)日：1987-07-21
申请号：US833402
申请日：1986-01-28
申请人： Masafumi Kikuchi
发明人： Masafumi Kikuchi
摘要： An amplitude of a sawtooth signal of a vertical period of a television signal is controlled. A level discriminating circuit 7 discriminates whether or not the amplitude of the sawtooth signal of the vertical period lies within a level of an almost proper level. There is provided a counter 9 to count a vertical sync signal when the amplitude is out of this level range. An output of the counter 9 is converted into an analog amplitude control signal by a D/A converter 12, thereby making it possible to control the amplitude at a high response speed.
摘要翻译： PCT No.PCT / JP85 / 00293 Sec。 371日期1986年1月28日 102（e）日期1986年1月28日PCT提交1985年5月29日PCT公布。 公开号WO85 / 05751 1985年12月19日，电视信号的垂直周期的锯齿波信号的幅度被控制。 电平鉴别电路7鉴别垂直周期的锯齿波信号的振幅是否处于几乎适当水平的水平。 提供了当幅度超出该电平范围时对垂直同步信号进行计数的计数器9。 计数器9的输出由D / A转换器12转换为模拟幅度控制信号，从而可以以高响应速度来控制振幅。
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49.发明授权
公开(公告)号：US4414494A
公开(公告)日：1983-11-08
申请号：US251517
申请日：1981-04-06
申请人： Terrance C. Schmidt
发明人： Terrance C. Schmidt
CPC分类号： H04N3/223
摘要： The input voltage to the deflection system of a raster scanned CRT is made variable and is controlled by a feedback network in such a way that the width of the raster remains constant regardless of scanning frequency variations.
摘要翻译： 光栅扫描CRT的偏转系统的输入电压是可变的并且由反馈网络控制，使得光栅的宽度保持恒定，而与扫描频率变化无关。
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公开(公告)号：US4134128A
公开(公告)日：1979-01-09
申请号：US754688
申请日：1976-12-27
申请人： Robert N. Hurst
发明人： Robert N. Hurst
IPC分类号： H04N9/74 , G06T3/40 , H04N3/223 , H04N5/073 , H04N5/262 , H04N5/45 , H04N5/937 , H04N5/22 , H04N5/14
CPC分类号： H04N5/45 , H04N3/223 , H04N5/0736 , H04N5/2628 , H04N5/937
摘要： The size of a color television picture field is changed without changing the size of the raster. This is achieved in an apparatus that includes means responsive to a field of television video signals for sampling same and providing a predetermined number of samples of television video signals per line and a predetermined number of lines per field and means responsive to the predetermined number of samples per line and lines per field for providing a full field of television video signals. Size reduction is accomplished by causing the first mentioned means to skip samples provided at the output thereof in groups of N, where N is the number of samples in a color subcarrier cycle, and to skip line pairs of the field.
摘要翻译： 改变彩色电视图像字段的大小而不改变光栅的大小。 这在一种装置中实现，该装置包括响应于电视视频信号的场的装置，用于对其进行采样，并且每行提供预定数量的电视视频信号样本和每场的预定数量的行，以及响应于预定数量样本的装置 每行和每行一行，用于提供电视视频信号的全场。 通过使得首先提到的装置以N组的形式跳过在其输出处提供的样本，其中N是彩色副载波周期中的样本数，并跳过该字段的线对，来实现尺寸减小。
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