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公开(公告)号：EP0012756A1
公开(公告)日：1980-07-09
申请号：EP79900301
申请日：1979-10-09
Applicant: RCA CORP
Inventor： ASTLE BRIAN , DISCHERT ROBERT ADAMS
CPC classification number: H04N5/262 , H04N9/04 , H04N9/093 , H04N17/002
Abstract: Systeme de reglage automatique pour une camera de television couleur (14) pour corriger les erreurs geometriques dans le canevas et les erreurs d'amplitude du video. Le systeme comprend des moyens (13, 27) de mesure des erreurs, positions ou amplitudes des signaux de sortie de la camera a differents emplacements des lignes rouges, vertes et bleues du canevas pour transmettre simultanement des signaux detectes correspondant aux erreurs de positions ou d'amplitudes de ces regions a des moyens de traitement des signaux (24). Les moyens de traitement (24) selectionnent et separent lesdits signaux detectes en fonction d'une pluralite d'algorithmes pour produire une pluralite de signaux de correction. Les signaux de correction sont appliques (28) a la camera (14) pour regler la camera en fonction de tous les signaux de correction avant de remesurer les lignes de canevas.
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公开(公告)号：GB2171875B
公开(公告)日：1988-07-06
申请号：GB8604013
申请日：1986-02-18
Applicant: RCA CORP
Inventor： ASTLE BRIAN , RIPLEY GERALD DAVID
Abstract: Computer generated or other video objects 18 may be superimposed over a background video image 14 so as to create the illusion of a single composite scene. The leading edge of an object is detected by one-shot 22 and for a period of time set by one-shot 22 the object 18 and background video 14 signals are mixed. After that period, only the object video 18 is transmitted. Upon detection of the object's trailing edge by one-shot 28, the two video signals are again mixed for a period of time set by one-shot 28. After this latter period, only the background video signal 14 is transmitted until another object's edge is detected. The mixing of the signals at the edges of the object produces a blending of the object into the background scene so that the object appears to be more realistically part of a single scene. The area of the foreground video signal around the object is maintained at a "blacker-than-black" level to ensure that object detail is not mistaken for an edge. Inverter 26 is provided since the one-shots trigger only on positive-going transitions. The delays 12, 20 are about half of one pixel period.
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公开(公告)号：DE3017928A1
公开(公告)日：1980-11-20
申请号：DE3017928
申请日：1980-05-09
Applicant: RCA CORP
Inventor： ASTLE BRIAN
IPC: H03K3/354 , H03K3/02 , H03K3/0231 , H03K3/2893 , H03K4/50 , H03K4/501 , H03K3/017
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公开(公告)号：FR2578130B1
公开(公告)日：1990-02-02
申请号：FR8602848
申请日：1986-02-28
Applicant: RCA CORP
Inventor： ASTLE BRIAN , RIPLEY GERALD DAVID
Abstract: Computer generated or other video objects 18 may be superimposed over a background video image 14 so as to create the illusion of a single composite scene. The leading edge of an object is detected by one-shot 22 and for a period of time set by one-shot 22 the object 18 and background video 14 signals are mixed. After that period, only the object video 18 is transmitted. Upon detection of the object's trailing edge by one-shot 28, the two video signals are again mixed for a period of time set by one-shot 28. After this latter period, only the background video signal 14 is transmitted until another object's edge is detected. The mixing of the signals at the edges of the object produces a blending of the object into the background scene so that the object appears to be more realistically part of a single scene. The area of the foreground video signal around the object is maintained at a "blacker-than-black" level to ensure that object detail is not mistaken for an edge. Inverter 26 is provided since the one-shots trigger only on positive-going transitions. The delays 12, 20 are about half of one pixel period.
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公开(公告)号：DE3606456A1
公开(公告)日：1986-09-04
申请号：DE3606456
申请日：1986-02-27
Applicant: RCA CORP
Inventor： ASTLE BRIAN , RIPLEY GERALD DAVID
Abstract: Computer generated or other video objects 18 may be superimposed over a background video image 14 so as to create the illusion of a single composite scene. The leading edge of an object is detected by one-shot 22 and for a period of time set by one-shot 22 the object 18 and background video 14 signals are mixed. After that period, only the object video 18 is transmitted. Upon detection of the object's trailing edge by one-shot 28, the two video signals are again mixed for a period of time set by one-shot 28. After this latter period, only the background video signal 14 is transmitted until another object's edge is detected. The mixing of the signals at the edges of the object produces a blending of the object into the background scene so that the object appears to be more realistically part of a single scene. The area of the foreground video signal around the object is maintained at a "blacker-than-black" level to ensure that object detail is not mistaken for an edge. Inverter 26 is provided since the one-shots trigger only on positive-going transitions. The delays 12, 20 are about half of one pixel period.
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Patent Agency Ranking
公开(公告)号：IT1188385B
公开(公告)日：1988-01-07
申请号：IT1941486
申请日：1986-02-14
Applicant: RCA CORP
Inventor： ASTLE BRIAN , RIPLEY GERALD DAVID
Abstract: Computer generated or other video objects 18 may be superimposed over a background video image 14 so as to create the illusion of a single composite scene. The leading edge of an object is detected by one-shot 22 and for a period of time set by one-shot 22 the object 18 and background video 14 signals are mixed. After that period, only the object video 18 is transmitted. Upon detection of the object's trailing edge by one-shot 28, the two video signals are again mixed for a period of time set by one-shot 28. After this latter period, only the background video signal 14 is transmitted until another object's edge is detected. The mixing of the signals at the edges of the object produces a blending of the object into the background scene so that the object appears to be more realistically part of a single scene. The area of the foreground video signal around the object is maintained at a "blacker-than-black" level to ensure that object detail is not mistaken for an edge. Inverter 26 is provided since the one-shots trigger only on positive-going transitions. The delays 12, 20 are about half of one pixel period.
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公开(公告)号：GB2171875A
公开(公告)日：1986-09-03
申请号：GB8604013
申请日：1986-02-18
Applicant: RCA CORP
Inventor： ASTLE BRIAN , RIPLEY GERALD DAVID
Abstract: Computer generated or other video objects 18 may be superimposed over a background video image 14 so as to create the illusion of a single composite scene. The leading edge of an object is detected by one-shot 22 and for a period of time set by one-shot 22 the object 18 and background video 14 signals are mixed. After that period, only the object video 18 is transmitted. Upon detection of the object's trailing edge by one-shot 28, the two video signals are again mixed for a period of time set by one-shot 28. After this latter period, only the background video signal 14 is transmitted until another object's edge is detected. The mixing of the signals at the edges of the object produces a blending of the object into the background scene so that the object appears to be more realistically part of a single scene. The area of the foreground video signal around the object is maintained at a "blacker-than-black" level to ensure that object detail is not mistaken for an edge. Inverter 26 is provided since the one-shots trigger only on positive-going transitions. The delays 12, 20 are about half of one pixel period.
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公开(公告)号：FR2578130A1
公开(公告)日：1986-08-29
申请号：FR8602848
申请日：1986-02-28
Applicant: RCA CORP
Inventor： ASTLE BRIAN , RIPLEY GERALD DAVID
Abstract: Computer generated or other video objects 18 may be superimposed over a background video image 14 so as to create the illusion of a single composite scene. The leading edge of an object is detected by one-shot 22 and for a period of time set by one-shot 22 the object 18 and background video 14 signals are mixed. After that period, only the object video 18 is transmitted. Upon detection of the object's trailing edge by one-shot 28, the two video signals are again mixed for a period of time set by one-shot 28. After this latter period, only the background video signal 14 is transmitted until another object's edge is detected. The mixing of the signals at the edges of the object produces a blending of the object into the background scene so that the object appears to be more realistically part of a single scene. The area of the foreground video signal around the object is maintained at a "blacker-than-black" level to ensure that object detail is not mistaken for an edge. Inverter 26 is provided since the one-shots trigger only on positive-going transitions. The delays 12, 20 are about half of one pixel period.
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公开(公告)号：DE2965175D1
公开(公告)日：1983-05-19
申请号：DE2965175
申请日：1979-02-22
Applicant: RCA CORP
Inventor： ASTLE BRIAN , DISCHERT ROBERT
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