US3837003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video tape recording of line-shared tv signals
Assignee: Westinghouse Electric Corp
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Filing: 1973-05-25
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Granted: 1974-09-17
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Expires: 1993-05-25
Abstract
Abstract A method and apparatus for producing a tape recording of lineshared video signals corresponding to n-separate pictures is accomplished by recording every nth line of each picture commencing from a different preselected line. A first tape recorder is used to record a video signal corresponding to one of the n-separate pictures by selecting every nth line thereof commencing with a preselected line. This recorded video signal includes a recording of horizontal sync pulses and vertical sync pulses. A replayed signal of this recorded video signal is combined by an add circuit with a video signal of another of the n-separate pictures consisting of every nth line thereof commencing with a preselected line. The second video signal is produced without sync pulses such that one line thereof is followed by a replayed line of recorded video signal. The combined video signals from the add circuit are in the form of line-shared signals which are then recorded onto a single piece of tape.
Inventors
- 👤 J Justice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:45
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/9201; H04N5/9205; H04N7/00; H04N7/08; H04N7/0806
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
A method of producing a recording of video signals corresponding to n-separate pictures, said method comprising the steps of: recording a video signal corresponding to one of said n-separate pictures by selecting every nth line thereof commencing with a preselected line, said recording of a video signal including a recording of a sync pulse produced during every line in the selected video signal, replaying said recording of the video signal corresponding to one of said n-seprate pictures, producing a video signal of another of said n-separate pictures by selecting every nth line thereof commencing with a preselected line, said producing a video signal occurring synchronously with said replaying of said recording such that the nth line of one picture is followed by the nth line of a different picture, and recording on a single tape the replayed video signal and the produced video signal.
Claim 2
Independent Claim
144 words
A method of producing a recording of video signals corresponding to n-separate pictures, said method comprising the steps of: recording a video signal corresponding to one of said n-separate pictures by selecting every nth line thereof commencing with a preselected line, said recording of a video signal including a recording of a sync pulse produced during every line in the selected video signal, replaying said recording of the video signal corresponding to one of said n-seprate pictures, producing a video signal of another of said n-separate pictures by selecting every nth line thereof commencing with a preselected line, said producing a video signal occurring synchronously with said replaying of said recording such that the nth line of one picture is followed by the nth line of a different picture, and recording on a single tape the replayed video signal and the produced video signal.
Claim 3
Dependent Claim
36 words
The method according to claim 1 comprising the further step of: combining the replayed video signal and the produced video signal to form a composite video signal for said recording on a single tape recording channel.
Claim 4
Dependent Claim
19 words
The method according to claim 2 wherein the video signals of said n-separate pictures are encoded color video signals.
Claim 5
Dependent Claim
37 words
The method according to claim 3 comprising the additional step of pRoducing sync pulses locked in phase to recorded sync pulses forming part of said recording of a video signal for controling said producing a video signal.
Claim 6
Dependent Claim
28 words
The method according to claim 4 wherein said recording of a video signal further includes a recording of composite sync pulses of said one of said n-separate pictures.
Claim 7
Dependent Claim
52 words
The method according to claim 4 wherein said recording of a video signal further includes a recording of a color subcarrier reference burst, said method comprising the additional step of producing color subcarrier reference bursts in phase with said recording of a color subcarrier reference burst for said producing a video signal.
Claim 8
Dependent Claim
143 words
In a system for producing a single recording of video signals corresponding to n-separate pictures by recording every nth line of each picture commencing from a different preselected line of each picture, the combination comprising: means for producing a plurality of video signals corresponding to said n-separate pictures, means for selecting from the video signals of said n-separate pictures every nth line of each picture commencing from a different preselected line of each picture, means for recording sync pulses and every nth line of the video signal corresponding to one of said n-separate pictures, means for summing the recorded video signal by said means for recording and the video signal corresponding to every nth line of each remaining picture commencing from a different preselected line of such remaining pictures, and means for recording the summed video signals produced by said means for summing.
Claim 9
Dependent Claim
143 words
In a system for producing a single recording of video signals corresponding to n-separate pictures by recording every nth line of each picture commencing from a different preselected line of each picture, the combination comprising: means for producing a plurality of video signals corresponding to said n-separate pictures, means for selecting from the video signals of said n-separate pictures every nth line of each picture commencing from a different preselected line of each picture, means for recording sync pulses and every nth line of the video signal corresponding to one of said n-separate pictures, means for summing the recorded video signal by said means for recording and the video signal corresponding to every nth line of each remaining picture commencing from a different preselected line of such remaining pictures, and means for recording the summed video signals produced by said means for summing.
Claim 10
Dependent Claim
47 words
The combination of claim 7 wherein said means for producing a plurality of video signals includes at least one color camera to produce color video signals corresponding to n-separate color pictures, said combination further comprising: means for encoding said color video signals corresponding to n-separate color pictures.
Claim 11
Dependent Claim
44 words
The combination according to claim 8 further comprising: means generating color sync pulses for controlling said means for selecting, said means for recording sync pulses, said means for encoding and said means for producing a video signal corresponding to one of the n-separate pictures.
Claim 12
Dependent Claim
47 words
The combination according to claim 9 further comprising: sync pulse generator means locked to said means for generating to control said means for selecting, said means for encoding and said means for producing such video signals corresponding to pictures exclusive of said one of the n-separate pictures.
References Cited (Backward Citations)
US3571503A
Cited
US3686436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |