US5023720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single channel video push effect
Assignee: Grass Valley Group Inc
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Filing: 1989-10-30
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Granted: 1991-06-11
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Expires: 2009-10-30
Abstract
Abstract A single channel video push effect generates push snapshots by combining a portion of a new video source with a complementary portion of an old video source to produce a combined image. Then the new and old video source portions of the combined image are swapped to produce a push snapshot. A sequence of such snapshots with increasing portions of the new video source forms the push effect.
Inventors
- 👤 Philip D. Jardins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:03
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/222; H04N5/262; H04N5/265
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
62 words
A method of forming a push snapshot for a video push effect comprising the steps of: (a) combining a portion of a first frame of a first video signal with a complementary portion of a first frame of a second video signal; and (b) swapping the portion of the first frame of the first video signal with the complementary portion of the
Claim 2
Independent Claim
62 words
A method of forming a push snapshot for a video push effect comprising the steps of: (a) combining a portion of a first frame of a first video signal with a complementary portion of a first frame of a second video signal; and (b) swapping the portion of the first frame of the first video signal with the complementary portion of the
Claim 3
Dependent Claim
73 words
A method as recited in claim 1 wherein step (a) comprises: (i) generating a key signal that defines a portion of a video frame, and (ii) combining that portion of said first frame of the first video signal which is defined by the key signal with that portion of said first frame of the second video signal which is the complement of said portion of the first frame of the first video signal.
Claim 4
Dependent Claim
75 words
A method as recited in claim 1 wherein step (a) results in an intermediate video frame and step (b) comprises: (i) writing the intermediate video frame into memory under control of a write address signal derived from a sync signal associated with the intermediate video frame, (ii) generating a second address signal, (iii) transforming the second address signal, and reading the intermediate video frame from the memory under control of the transformed second address signal.
Claim 5
Independent Claim
73 words
A method of forming a sequence of push snapshots that represent a video push effect comprising the steps of: combining a first portion of a first video source with a complementary portion of a second video source; swapping the first portion with the complementary portion to produce a push snapshot; and repeating the combining and swapping steps with increased portions of the first video source and decreased portions of the second video source.
Claim 6
Independent Claim
73 words
A method of forming a sequence of push snapshots that represent a video push effect comprising the steps of: combining a first portion of a first video source with a complementary portion of a second video source; swapping the first portion with the complementary portion to produce a push snapshot; and repeating the combining and swapping steps with increased portions of the first video source and decreased portions of the second video source.
Claim 7
Independent Claim
73 words
An apparatus for forming a push snapshot for a video push effect comprising: means for combining a portion of a first frame of a first video signal with a complementary portion of a first frame of a second video signal; and means for swapping the portion of the first frame of the first video signal with the complementary portion f the first frame of the second video signal to produce the push snapshot.
Claim 8
Independent Claim
73 words
An apparatus for forming a push snapshot for a video push effect comprising: means for combining a portion of a first frame of a first video signal with a complementary portion of a first frame of a second video signal; and means for swapping the portion of the first frame of the first video signal with the complementary portion f the first frame of the second video signal to produce the push snapshot.
Claim 9
Independent Claim
79 words
An apparatus for forming a sequence of push snapshots that represent a video push effect comprising: means for combining a first portion of a first video source with a complementary portion of a second video source; means for swapping the first portion with the complementary portion to produce a push snapshot; and means for repeatedly operating the combining mans and the swapping means with increased portions of the first video source and decreased portions of the second video source.
Claim 10
Independent Claim
79 words
An apparatus for forming a sequence of push snapshots that represent a video push effect comprising: means for combining a first portion of a first video source with a complementary portion of a second video source; means for swapping the first portion with the complementary portion to produce a push snapshot; and means for repeatedly operating the combining mans and the swapping means with increased portions of the first video source and decreased portions of the second video source.
Claim 11
Independent Claim
141 words
A method of forming a push snapshot video output frame from first and second video input frames, comprising: (a) generating an intermediate video frame composed of a portion of the first input frame and a complementary portion of the second input frame, said portion of the first input frame and said complementary portion of the second input frame meeting along a first boundary that extends parallel to first and second opposite edges of the intermediate frame, and (b) swapping said portion of the first input frame with said complementary portion of the second input frame to generate the push snapshot output frame in which said portion of the first input frame and said complementary portion of said second input frame meet along a second boundary that extends parallel to said first and second opposite edges of the push snapshot output frame.
Claim 12
Independent Claim
141 words
A method of forming a push snapshot video output frame from first and second video input frames, comprising: (a) generating an intermediate video frame composed of a portion of the first input frame and a complementary portion of the second input frame, said portion of the first input frame and said complementary portion of the second input frame meeting along a first boundary that extends parallel to first and second opposite edges of the intermediate frame, and (b) swapping said portion of the first input frame with said complementary portion of the second input frame to generate the push snapshot output frame in which said portion of the first input frame and said complementary portion of said second input frame meet along a second boundary that extends parallel to said first and second opposite edges of the push snapshot output frame.
Claim 13
Dependent Claim
75 words
A method as recited in claim 7 wherein step (a) comprises: (i) generating a key signal that defines a portion of a video frame, said portion being limited by said first boundary, and (ii) combining that portion of the first input frame which is defined by the key signal with that portion of the second input frame which is the complement of that portion of the first frame which is defined by the key signal.
Claim 14
Independent Claim
175 words
A method for forming a sequence of at least first and second snapshot video output frames from a first sequence of video input frames and a second sequence of video input frames comprising: (a) generating a first snapshot video output frame by combining a portion of a first frame of the first sequence and a complementary portion of a first frame of the second sequence and swapping said portion of the first frame of the first sequence with said complementary portion of the first frame of the second sequence; and (b) generating a second snapshot video output frame by combining a portion of a second frame of the first sequence and a complementary portion of a second frame of the second sequence, the area of said portion of the second frame of the first sequence being larger than the area of said portion of the first frame of the first sequence, and swapping said portion of the second frame of the first sequence with said complementary portion of the second frame of the second sequence.
Claim 15
Independent Claim
175 words
A method for forming a sequence of at least first and second snapshot video output frames from a first sequence of video input frames and a second sequence of video input frames comprising: (a) generating a first snapshot video output frame by combining a portion of a first frame of the first sequence and a complementary portion of a first frame of the second sequence and swapping said portion of the first frame of the first sequence with said complementary portion of the first frame of the second sequence; and (b) generating a second snapshot video output frame by combining a portion of a second frame of the first sequence and a complementary portion of a second frame of the second sequence, the area of said portion of the second frame of the first sequence being larger than the area of said portion of the first frame of the first sequence, and swapping said portion of the second frame of the first sequence with said complementary portion of the second frame of the second sequence.
Claim 16
Dependent Claim
70 words
A method as recited in claim 9 wherein step (a) comprises: (i) generating a key signal that defines a portion of a video frame, and (ii) combining that portion of the first frame of the first sequence which is defined by the key signal with that portion of the first frame of the second sequence which is the complement of said portion of the first frame of the first sequence.
Claim 17
Dependent Claim
88 words
A method as recited in claim 10 wherein step (b) comprises: (i) adjusting the key signal so that it defines a portion of the video frame that is larger in area than the portion defined by the key signal in step (a), (ii) combining that portion of the second frame of the first sequence which is defined by the adjusted key signal with that portion of the second frame of the second sequence which is the complement of said portion of the second frame of the first sequence.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-10 | 1994-12-10 | 1995-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-10 | 1998-12-10 | 1999-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-10 | 2002-12-10 | 2003-06-11 | $7700.00 | Window Closed / Lapsed |