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11.发明公开
公开(公告)号：EP0885524A1
公开(公告)日：1998-12-23
申请号：EP97916205.0
申请日：1997-03-06
IPC分类号： H04N5
CPC分类号： H04N5/45
摘要： Apparatus for displaying a combined image of an auxiliary image and a main image includes a source of a main image signal and a source of samples representing an auxiliary image signal. A quincunx subsampler is coupled to the auxiliary image sample source. A signal combiner is coupled to the main image signal source and the quincunx subsampler. The sample combiner combines the main image signal and a signal representing the quincunx subsampled samples to generate a signal representing a combined image of the main and auxiliary images.
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公开(公告)号：EP0685139B1
公开(公告)日：2001-07-18
申请号：EP93905058.9
申请日：1993-02-17
CPC分类号： H04N7/0122 , H04N7/007
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13.发明授权
公开(公告)号：EP0885524B1
公开(公告)日：1999-10-06
申请号：EP97916205.4
申请日：1997-03-06
IPC分类号： H04N5/45
CPC分类号： H04N5/45
摘要： Apparatus for displaying a combined image of an auxiliary image and a main image includes a source of a main image signal and a source of samples representing an auxiliary image signal. A quincunx subsampler is coupled to the auxiliary image sample source. A signal combiner is coupled to the main image signal source and the quincunx subsampler. The sample combiner combines the main image signal and a signal representing the quincunx subsampled samples to generate a signal representing a combined image of the main and auxiliary images.
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14.发明授权
公开(公告)号：EP0885523B1
公开(公告)日：1999-10-06
申请号：EP97916204.7
申请日：1997-03-06
IPC分类号： H04N5/45
CPC分类号： H04N5/45
摘要： Apparatus for combining an auxiliary image and a main image includes a source of a main image video signal and a source of samples representing an auxiliary image video signal having successive fields. A quincunx subsampler is coupled to the auxiliary image sample source and subsamples the auxiliary image samples in either a first sample pattern in which samples are taken at a first set of horizontal locations, or a second sample pattern in which samples are taken at a second set of horizontal locations substantially midway between the first set, all in response to a control signal. A signal combiner is coupled to the quincunx subsampler and the main image signal source, and combines the main image signal and a signal representing the quincunx subsampled auxiliary image samples to generate a signal representing a combine image of the main and auxiliary images. A control circuit generates the quincunx subsampler control signal so that the quincunx subsampler takes samples in one of the sample patterns at the beginning of each auxiliary image video signal field, and in the other sample pattern after a switch time calculated so that the quincunx subsampled auxiliary image samples in the combined image all are taken by the same sample pattern.
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15.发明授权
公开(公告)号：EP0885522B1
公开(公告)日：1999-10-06
申请号：EP97916203.9
申请日：1997-03-06
IPC分类号： H04N5/45
CPC分类号： H04N5/45
摘要： Apparatus for combining an auxiliary image and a main image includes a source of a main image signal and a source of samples representing an auxiliary image signal. A subsampler selectively subsamples the auxiliary image samples in either a quincunx subsampling pattern or a rectangular subsampling pattern. A signal combiner combines the main image signal and a signal representing the subsampled auxiliary image samples to generate a combined image signal. A control circuit generates a freeze control signal for the subsampler which conditions it to take samples in the rectangular subsampling pattern during a freeze frame operation, and in the quincunx sampling pattern otherwise.
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公开(公告)号：EP0821858B1
公开(公告)日：1999-07-14
申请号：EP96911773.8
申请日：1996-04-16
CPC分类号： H04N9/78 , H04N5/21 , Y10S348/908
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17.发明公开
公开(公告)号：EP0885522A1
公开(公告)日：1998-12-23
申请号：EP97916203.0
申请日：1997-03-06
IPC分类号： H04N5
CPC分类号： H04N5/45
摘要： Apparatus for combining an auxiliary image and a main image includes a source of a main image signal and a source of samples representing an auxiliary image signal. A subsampler selectively subsamples the auxiliary image samples in either a quincunx subsampling pattern or a rectangular subsampling pattern. A signal combiner combines the main image signal and a signal representing the subsampled auxiliary image samples to generate a combined image signal. A control circuit generates a freeze control signal for the subsampler which conditions it to take samples in the rectangular subsampling pattern during a freeze frame operation, and in the quincunx sampling pattern otherwise.
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公开(公告)号：EP0821858A1
公开(公告)日：1998-02-04
申请号：EP96911773.0
申请日：1996-04-16
CPC分类号： H04N9/78 , H04N5/21 , Y10S348/908
摘要： A composite video input signal is combined with a noise reduction signal to form a noise reduced first video signal which is delayed by multiple time periods of (i) one line less one-half color cycle, (ii) one line and (iii) one line plus one-half color cycle to form respective ones of first, second and third time delayed signals. The first and third delayed signals are combined to form an average signal from which a subtractor substracts the composite video input signal. The resultant difference signal is limited to form the noise reduction signal. The noise reduced first video signal and the second delayed video signal are combined in an output circuit to provide noise reduced and separated chrominance and luminance output signals.
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公开(公告)号：EP0532682B1
公开(公告)日：1997-10-08
申请号：EP91912590.6
申请日：1991-05-29
CPC分类号： H04N9/641 , G06T3/0012 , G06T3/4007 , H04N3/223 , H04N3/227 , H04N3/27 , H04N5/2624 , H04N5/45 , H04N7/007 , H04N7/01 , H04N7/0105 , H04N7/0122 , H04N7/015 , H04N9/64 , H04N19/90
摘要： A video display system comprises a first video signal source (304) of a first picture and a second video signal source of a second picture. A first signal processor (304) speeds up the first video signal. The second video signal (306) is vertically synchronized with the first video signal. The second video signal is delayed by a fraction of a field period in a field memory. A second signal processor (306) speeds up the synchronized second video signal. The first and second video signals are combined for side-by-side display of the pictures. If the first and second display format ratios are each approximately 4:3 and the third display format ratio is approximately 16:9, each of the side-by-side pictures can be displayed in a format display ratio of approximately 8:9. If each of the video signals is speeded up by approximately 4/3 and cropped horizontally by approximately 1/3, each of the side-by-side pictures is displayed substantially without aspect ratio distortion.
摘要翻译： 视频显示系统包括第一图像的第一视频信号源（304）和第二图像的第二视频信号源。 第一信号处理器（304）加速第一视频信号。 第二视频信号（306）与第一视频信号垂直同步。 第二视频信号在场存储器中被延迟了一个场周期的一部分。 第二信号处理器（306）加速同步的第二视频信号。 第一和第二视频信号被组合用于图像的并排显示。 如果第一显示格式比和第二显示格式比均大约为4:3并且第三显示格式比大约为16:9，则可以以大约8:9的格式显示比率来显示每个并排的图片。 如果每个视频信号被加速大约4/3并且水平地被大约1/3剪切，则每个并排的图像被显示为基本没有高宽比失真。
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公开(公告)号：EP0685142A1
公开(公告)日：1995-12-06
申请号：EP93905999.0
申请日：1993-02-17
CPC分类号： H04N7/0122 , H04N3/223
摘要： A video display system, comprises a video display having a first format display ratio. A picture height circuit (1010) determines an active picture height from an input video signal having a second format display ratio. A detector circuit (1030) identifies letterbox formats responsive to the active picture height in the signal and determines a format display ratio of the letterbox picture. A zoom circuit (1032) is operable in a first mode for enlarging the picture in size to fill the display substantially entirely, and operable in a second mode for enlarging the picture in size to substantially fill the display vertically. A vertical pan circuit (1034) centers the picture. The detector can identify the format display ratio of the letterbox format picture. A deflection system (50) is controllable in vertical size by a variable vertical scan rate, in horizontal size by variable horizontal expansion and compression, and in pan position by varying the vertical reset in phase.
摘要翻译： 视频显示系统包括具有第一格式显示比率的视频显示器。 图像高度电路（1010）从具有第二格式显示比率的输入视频信号中确定有效图像高度。 检测器电路（1030）响应于信号中的活动图像高度识别信箱格式并确定信箱图像的格式显示比率。 变焦电路（1032）可在第一模式下操作，用于放大该图片的大小以基本上完全填满显示器，并且可在第二模式下操作，用于放大该图片的大小以垂直地充满显示器。 垂直平移电路（1034）将图片居中。 检测器可以识别信箱格式图像的格式显示比率。 偏转系统（50）的垂直尺寸可通过可变的垂直扫描速率，水平尺寸的可变水平扩展和压缩以及通过改变相位的垂直复位的水平位置来控制。
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