-
公开(公告)号：EP0065881B1
公开(公告)日：1985-10-30
申请号：EP82302688.5
申请日：1982-05-25
申请人： RCA CORPORATION
CPC分类号： H04N9/78
-
公开(公告)号：EP0065881A3
公开(公告)日：1983-05-04
申请号：EP82302688
申请日：1982-05-25
申请人： RCA CORPORATION
IPC分类号： H04N09/535 , H04N09/32 , H03H15/00
CPC分类号： H04N9/78
摘要： A signal separation system is provided which includes a plurality of serially-coupled signal transfer stages (102, 104, 106). A video information signal is applied to an input stage (102) and is delayed by at least the time interval of one horizontal television line (1-H) as it passes through the stages. Various ones of the stages which are 1-H apart in time include outputs, which are combined by weighting function (120-126) and summing or difference circuits (130-136) to produce bandwidth-limited transversal filter output signals. These signals are additively and subtractively combined (140, 150, 160, 156) to produce a combed band passed chrominance signal and a fully restored and combed luminance signal, thereby obviating the need for subsequent filtering before the signals are further processed. The bandwidth-limited signals may also be combined (162) to provide a user adjustable peaking control signal for the luminance information channel.
-
公开(公告)号：EP0164203A3
公开(公告)日：1986-01-02
申请号：EP85302899
申请日：1985-04-25
申请人： RCA CORPORATION
IPC分类号： H04N05/14
摘要： @ A television receiver displays the picture information of an interlaced signal, such as a baseband NTSC signal, in a non-interlaced scanning format. The NTSC signal (130) is comb filtered in a line comb filter (15) to extract a luminance representative component signal (Yi). When no motion occurs in the picture scene, vertical detail (Yd) is added (33) and subtracted (39), respectively, from the luminance representative signal (Yi) to form first (Yb) and second (Ya) enhanced luminance signals, respectively. The first and second signals are time compressed (23) so that during each horizontal line interval (1 H) of the baseband NTSC signal (130), both of the corresponding time compressed (Y2H) first and second signals can be displayed (43, 51) as consecutive non-interlaced scan lines, respectively, of the display (51). When motion is detected (37), vertical detail enhancement is diminished (41, 35) so that artifacts which may be more pronounced in the presence of motion, become less visible.
-
公开(公告)号：EP0065881A2
公开(公告)日：1982-12-01
申请号：EP82302688.5
申请日：1982-05-25
申请人： RCA CORPORATION
CPC分类号： H04N9/78
摘要： A signal separation system is provided which includes a plurality of serially-coupled signal transfer stages (102, 104, 106). A video information signal is applied to an input stage (102) and is delayed by at least the time interval of one horizontal television line (1-H) as it passes through the stages. Various ones of the stages which are 1-H apart in time include outputs, which are combined by weighting function (120-126) and summing or difference circuits (130-136) to produce bandwidth-limited transversal filter output signals. These signals are additively and subtractively combined (140, 150, 160, 156) to produce a combed band passed chrominance signal and a fully restored and combed luminance signal, thereby obviating the need for subsequent filtering before the signals are further processed. The bandwidth-limited signals may also be combined (162) to provide a user adjustable peaking control signal for the luminance information channel.
-
-
-
搜索结果
4 条记录 (耗时 0.009 秒)
