US3571503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for simultaneously recording on film time displaced segments of an electrical signal
Assignee: CBS Broadcasting Inc
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Filing: 1967-11-24
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Granted: 1971-03-16
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Expires: 1987-11-24
Abstract
Abstract Recording method and apparatus for simultaneously recording on film two time displaced segments of an electrical signal, in which one or more recording beams sweeping transversely of the film are modulated in intensity by the segments, the first of which is delayed in time from its occurrence by an amount equal to the original time displacement between the signal segments. Two recording beams, each modulated by a respective signal segment, or one beam, sequentially modulated with the signal segments, can be employed. Where the signal segments comprise the field signals of a composite television signal, the recording beam(s) may be positioned, to record the corresponding field lines adjacent to one another or, alternatively, in separate frames on the record medium. Both intermittent and continuous film motion may be employed. A variable delay servoloop responsive to the television synchronization pulses maintains the exact delay so that the fields are recorded simultaneously.
Inventors
- 👤 Renville H Mcmann Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:54
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/84; H04N9/00; H04N9/11
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
127 words
Apparatus for recording on an elongate record medium repeatedly occurring first and second time displaced segments of an electrical video signal, said first and second segments representing alternate television fields of interlaced scanned video information, the apparatus comprising, in combination: a. means responsive to the electrical video signal for delaying the first signal segment to an output terminal by an amount corresponding to the time displacement between the first and second signal segments; b. means for moving said record medium continuously in the longitudinal direction through a scanning zone; and c. recording means, responsive to the delayed first signal segment at the output terminal and to the undelayed second signal segment, for recording said first and second signal segments on said record medium in said scanning zone.
Claim 2
Dependent Claim
127 words
Apparatus for recording on an elongate record medium repeatedly occurring first and second time displaced segments of an electrical video signal, said first and second segments representing alternate television fields of interlaced scanned video information, the apparatus comprising, in combination: a. means responsive to the electrical video signal for delaying the first signal segment to an output terminal by an amount corresponding to the time displacement between the first and second signal segments; b. means for moving said record medium continuously in the longitudinal direction through a scanning zone; and c. recording means, responsive to the delayed first signal segment at the output terminal and to the undelayed second signal segment, for recording said first and second signal segments on said record medium in said scanning zone.
Claim 3
Dependent Claim
11 words
The apparatus defined in claim 1, wherein said recording means includes:
Claim 4
Dependent Claim
31 words
means for sequentially modulating the intensity of said beam with the delayed first signal segment and with the undelayed second signal segment as the beam sweeps transversely of the record medium.
Claim 5
Dependent Claim
31 words
means for sequentially modulating the intensity of said beam with the delayed first signal segment and with the undelayed second signal segment as the beam sweeps transversely of the record medium.
Claim 6
Dependent Claim
39 words
means for modulating the intensity of one of said two beams with the delayed first signal segment and the other of said two beams with the undelayed second signal segment as said beams sweep transversely of the record medium.
Claim 7
Dependent Claim
39 words
means for modulating the intensity of one of said two beams with the delayed first signal segment and the other of said two beams with the undelayed second signal segment as said beams sweep transversely of the record medium.
Claim 8
Dependent Claim
11 words
The apparatus defined in claim 1, wherein said recording means includes:
Claim 9
Dependent Claim
81 words
The apparatus defined in claim 1, wherein successive first and second signal segments are recorded in respective first and second frame portions of said record medium, each frame portion comprising a succession of mutually displaced transverse lines, and wherein said recording means is operative to record said successive first and second signal segments at a distance apart equal to the sum of the longitudinal dimension of one of the record medium frame portions and the pitch distance between adjacent record lines.
Claim 10
Dependent Claim
79 words
The apparatus defined in claim 1, wherein successive first and second signal segments are recorded in respective first and second successions of mutually displaced transverse lines on the record medium, the individual lines of each succession being interlaced with the lines of the other, and wherein said recording means is operative to record said successive first and second signal segments at a distance apart equal to the longitudinal displacement between adjacent lines of the first and second recorded successions.
Claim 11
Dependent Claim
152 words
Apparatus for recording on an elongate record medium repeatedly occurring first and second time displaced segments of an electrical video signal, said first and second segments representing alternate television fields of interlaced scanned video information, the apparatus comprising in combination: a. means, responsive to the electrical signal, for delaying the first signal segment to first and second terminals by amounts which are consecutive multiples, respectively, of the time displacement between the first and second signal segments; b. means for advancing the record medium through a scanning zone; c. means for sequentially selecting the undelayed signal segment and one of the delayed signal segments at the second terminal in synchronism with the rate of occurrence of the signal segments; and d. recording means, reSponsive to the delayed signal segment at the first terminal and to the selected signal segment for recording said segments in at least one record line on the record medium.
Claim 12
Dependent Claim
152 words
Apparatus for recording on an elongate record medium repeatedly occurring first and second time displaced segments of an electrical video signal, said first and second segments representing alternate television fields of interlaced scanned video information, the apparatus comprising in combination: a. means, responsive to the electrical signal, for delaying the first signal segment to first and second terminals by amounts which are consecutive multiples, respectively, of the time displacement between the first and second signal segments; b. means for advancing the record medium through a scanning zone; c. means for sequentially selecting the undelayed signal segment and one of the delayed signal segments at the second terminal in synchronism with the rate of occurrence of the signal segments; and d. recording means, reSponsive to the delayed signal segment at the first terminal and to the selected signal segment for recording said segments in at least one record line on the record medium.
Claim 13
Dependent Claim
39 words
The apparatus defined in claim 6, wherein said advancing means continuously advances the record medium through a scanning zone to record each of the first and second signal segments in two longitudinally displaced frame portions on the record medium.
Claim 14
Dependent Claim
71 words
The apparatus defined in claim 6, wherein: said delay means comprises first and second delay units providing time delays of the first segment equal to, respectively, once and twice the time displacement between the first and second segments and said selecting means includes gating means selecting alternately the undelayed second segment and the delayed first segment from the second delay unit for presentation to a modulating input of the recording means.
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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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |