US4568976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for synchronizing two video pictures by controlling vertical synchronization of a video camera
Assignee: Individual
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Filing: 1983-12-01
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Granted: 1986-02-04
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Expires: 2003-12-01
Abstract
Abstract Apparatus for synchronizing a first video signal corresponding to a first image and a second video signal corresponding to a second image, each of the first and second video signals including vertical and horizontal synchronizing signals, including a video camera which produces the first and second video signals and which generates vertical synchronizing signals for the first and second video signals in response to a negative-going edge of a pulse signal supplied thereto; a storage device which stores the first video signal produced by the video camera; a synchronizing signal generator which supplies vertical and horizontal synchronizing signals synchronized with the corresponding signals of the first video signal when the video camera is viewing the second image; and a monostable multivibrator connected between the vertical synchronizing signal terminals of the synchronizing signal generator and the video camera, and operative during viewing of the second image to produce and supply said negative-going edge of said pulse signal to the video camera in response to the trailing or positive-going edge of the vertical synchronizing signal from the synchronizing signal generator, the new negative-going edge being phase delayed from the positive-going edge of the vertical synchronizing signal which triggers the monostable multivibrator by slightly less than one field interval to control the camera to generate the vertical synchronizing signal for the second video signal in phase coincidence with the vertical synchronizing signal of the first video signal.
Inventors
- 👤 Joseph E. Trammell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:58
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/222; H04N5/262; H04N5/2621; H04N5/04; H04N5/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
177 words
Apparatus for synchronizing a first video signal corresponding to a first image and a second video signal corresponding to a second image, each of said first and second video signals including at least a vertical synchronizing signal, comprising: camera means for producing said first and second video signals corresponding to said first and second images, respectively, said camera means including means for generating said vertical synchronizing signals of said first and second video signals in response to a pulse signal supplied thereto; storage means for storing said first video signal produced by said camera means; synchronizing signal generating means for producing a vertical synchronizing signal in response to said stored first video signal; and control means for generating said pulse signal phase displaced with respect to said vertical synchronizing signal of said first video signal in response to said vertical synchronizing signal from said synchronizing signal generating means, and for supplying said pulse signal to said camera means to control the latter to effect synchronization of said vertical synchronizing signals of said first and second video signals.
Claim 2
Dependent Claim
177 words
Apparatus for synchronizing a first video signal corresponding to a first image and a second video signal corresponding to a second image, each of said first and second video signals including at least a vertical synchronizing signal, comprising: camera means for producing said first and second video signals corresponding to said first and second images, respectively, said camera means including means for generating said vertical synchronizing signals of said first and second video signals in response to a pulse signal supplied thereto; storage means for storing said first video signal produced by said camera means; synchronizing signal generating means for producing a vertical synchronizing signal in response to said stored first video signal; and control means for generating said pulse signal phase displaced with respect to said vertical synchronizing signal of said first video signal in response to said vertical synchronizing signal from said synchronizing signal generating means, and for supplying said pulse signal to said camera means to control the latter to effect synchronization of said vertical synchronizing signals of said first and second video signals.
Claim 3
Dependent Claim
32 words
Apparatus according to claim 1; in which said control means includes monostable multivibrator means for producing said pulse signal in response to said vertical synchronizing signal from said synchronizing signal generating means.
Claim 4
Dependent Claim
49 words
Apparatus according to claim 2; in which said monostable multivibrator means is supplied with a vertical synchronizing signal from the synchronizing signal generating means and is triggered to produce said pulse signal in response to the positive-going edge of said vertical synchronizing signal from said synchronizing signal generating means.
Claim 5
Dependent Claim
27 words
Apparatus according to claim 2; in which said control means further includes adjustment means for controlling the duration of said pulse signal from said monostable multivibrator means.
Claim 6
Dependent Claim
36 words
Apparatus according to claim 2; further comprising switch means for selectively supplying one of said pulse signal from said control means and said vertical synchronizing signal from said synchronizing signal generating means to said camera means.
Claim 7
Dependent Claim
55 words
Apparatus according to claim 1; in which said control means includes first monostable multivibrator means for producing a first signal in response to said vertical synchronizing signal from said synchronizing signal generating means, and second monostable multivibrator means for producing said pulse signal in response to said first signal from said first monostable multivibrator means.
Claim 8
Dependent Claim
38 words
Apparatus according to claim 1; further comprising means for monitoring at least one of said first image and said second image in response to at least one of said first video signal and said second video signal, respectively.
Claim 9
Dependent Claim
41 words
Apparatus according to claim 7; further comprising special effects generator means for selectively supplying said first video signal and said second video signal to said monitor means and for controlling display of said first and second images by said monitor means.
Claim 10
Dependent Claim
53 words
Apparatus according to claim 1; in which said first and second video signals each include a horizontal synchronizing signal, and further comprising means for substantially eliminating the horizontal synchronizing signal from said second video signal and means for adding the horizontal synchronizing signal to said first video signal to said second video signal.
Claim 11
Dependent Claim
34 words
Apparatus according to claim 9; in which said means for substantially eliminating includes first gate means for transmitting said second video signal in response to the horizontal synchronizing signal of said first video signal.
Claim 12
Dependent Claim
46 words
Apparatus according to claim 10; in which said first gate means includes an output and said means for adding includes second gate means having an output connected to the output of said first gate means for gating said horizontal synchronizing signal of said first video signal.
Claim 13
Dependent Claim
52 words
Apparatus according to claim 9; in which said means for adding includes special effects generator means supplied with said first and second video signals and a horizontal synchronizing signal from said synchronizing signal generating means for adding the horizontal synchronizing signal from said synchronizing signal generating means to said second video signal.
Claim 14
Dependent Claim
189 words
Apparatus for synchronizing a first video signal corresponding to a first image and a second video signal corresponding to a second image, each of said first and second video signal including at least a vertical synchronizing signal, comprising: camera means for producing said first and second video signals corresponding to said first and second images, respectively, said camera means including means for generating said vertical synchronizing signals of said first and second video signals in response to a negative-going edge of a pulse signal supplied thereto; storage means for storing said first video signal produced by said camera means; synchronizing signal generating means for producing a vertical synchronizing signal in response to said stored first video signal; and control means for generating said negative-going edge of said pulse signal phase displaced with respect to the negative-going edge of said vertical synchronizing signal of said first video signal in response to said vertical synchronizing signal from said synchronizing signal generating means, and for supplying said pulse signal to said camera means to control the latter to effect synchronization of said vertical synchronizing signals of said first and second video signals.
Claim 15
Dependent Claim
189 words
Apparatus for synchronizing a first video signal corresponding to a first image and a second video signal corresponding to a second image, each of said first and second video signal including at least a vertical synchronizing signal, comprising: camera means for producing said first and second video signals corresponding to said first and second images, respectively, said camera means including means for generating said vertical synchronizing signals of said first and second video signals in response to a negative-going edge of a pulse signal supplied thereto; storage means for storing said first video signal produced by said camera means; synchronizing signal generating means for producing a vertical synchronizing signal in response to said stored first video signal; and control means for generating said negative-going edge of said pulse signal phase displaced with respect to the negative-going edge of said vertical synchronizing signal of said first video signal in response to said vertical synchronizing signal from said synchronizing signal generating means, and for supplying said pulse signal to said camera means to control the latter to effect synchronization of said vertical synchronizing signals of said first and second video signals.
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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) | 1989-02-03 | 1989-08-05 | 1990-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-03 | 1993-08-05 | 1994-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-03 | 1997-08-05 | 1998-02-04 | $7700.00 | Window Closed / Lapsed |