US4164761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telecine apparatus having improved reproduction during panning and tilting scenes
Assignee: Cintel International Ltd
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Filing: 1978-05-18
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Granted: 1979-08-14
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Expires: 1998-05-18
Abstract
Abstract This invention relates to a method and apparatus for improving the reproduction of a television picture derived from a cinema film by a telecine apparatus during a period of panning and/or tilting in the scene recorded on the cinema film. The improvement is achieved by shifting the scanning raster of the telecine apparatus in respect of at least selected television fields during the panning or tilting period in such manner that during a series of consecutive television fields an image of an object moving across the television picture is reproduced in the television picture in a greater number of positions along its direction of movement than the number of film frames from which the series of consecutive television fields is derived.
Inventors
- 👤 Raymond Matchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:37
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/36
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
111 words
A method of improving the reproduction of a television picture derived from a cinema film by a telecine apparatus during a period of panning and/or tilting in the scene recorded on the cinema film, the method comprising shifting the scanning raster of the telecine apparatus in respect of at least selected television fields during said period in such manner that during a series of consecutive television fields an image of an object moving across the television picture is reproduced in the television picture in a greater number of positions along its direction of movement than the number of film frames from which the said series of consecutive television fields is derived.
Claim 2
Independent Claim
111 words
A method of improving the reproduction of a television picture derived from a cinema film by a telecine apparatus during a period of panning and/or tilting in the scene recorded on the cinema film, the method comprising shifting the scanning raster of the telecine apparatus in respect of at least selected television fields during said period in such manner that during a series of consecutive television fields an image of an object moving across the television picture is reproduced in the television picture in a greater number of positions along its direction of movement than the number of film frames from which the said series of consecutive television fields is derived.
Claim 3
Dependent Claim
72 words
A method as claimed in claim 1, wherein in the telecine apparatus two television fields are derived from each film frame, and wherein the scanning raster is shifted in such manner that in the second field of each film frame the image is reproduced at a position intermediate its position in the first field of the same film frame and its position in the first field of the immediately succeeding film frame.
Claim 4
Dependent Claim
124 words
A method as claimed in claim 1, wherein the telecine apparatus alternate groups of two and three television fields are derived from consecutive film frames, and wherein the scanning raster is shifted in such manner that in the second field of each group of two fields the image is reproduced at a position intermediate its position in the first field of the same group and its position in the first fields of the immediately succeeding group of three fields, and in the second and third fields of each group of three fields the image is reproduced at positions intermediate its position in the first field of the same group and its position in the first field of the immediately succeeding group of two fields.
Claim 5
Independent Claim
113 words
An apparatus for improving the reproduction of a television picture derived from a cinema film by a telecine apparatus during a period of panning and/or tilting in the scene recorded on the cinema film, the apparatus comprising means for shifting the scanning raster of the telecine apparatus in respect of at least selected television fields during said period in such manner that during a series of consecutive television fields an image of an object moving across the television picture is reproduced in the television picture in a greater number of positions along its direction of movement than the number of film frames from which the said series of consecutive television fields is derived.
Claim 6
Independent Claim
113 words
An apparatus for improving the reproduction of a television picture derived from a cinema film by a telecine apparatus during a period of panning and/or tilting in the scene recorded on the cinema film, the apparatus comprising means for shifting the scanning raster of the telecine apparatus in respect of at least selected television fields during said period in such manner that during a series of consecutive television fields an image of an object moving across the television picture is reproduced in the television picture in a greater number of positions along its direction of movement than the number of film frames from which the said series of consecutive television fields is derived.
Claim 7
Dependent Claim
77 words
An apparatus as claimed in claim 4, wherein in the telecine apparatus two television fields are derived from each film frame, and wherein the shifting means comprises means for shifting the scanning raster in such manner that in the second field of each film frame the image is reproduced at a position intermediate its position in the first field of the same film frame and its position in the first field of the immediately succeeding film frame.
Claim 8
Dependent Claim
131 words
An apparatus as claimed in claim 4, wherein in the telecine apparatus alternate groups of two and three television fields are derived from consecutive film frames, and wherein the shifting means comprises means for shifting the scanning raster in such manner that in the second field of each group of two fields the image is reproduced at a position intermediate its position in the first field of the same group and its position in the first field of the immediately succeeding group of the three fields, and in the second and third fields of each group of three fields the image is reproduced at positions intermediate its position in the first field of the same group and its position in the first field of the immediately succeeding group of two fields.
Claim 9
Dependent Claim
105 words
An apparatus as claimed in claim 5, wherein the shifting means comprises respective correction circuits for horizontal and vertical shifting of the scanning raster, wherein each correction circuit comprises means for generating a series of pulses at half the field frequency, each pulse having a duration substantially equal to one field period, means for selectively inverting the pulses, and means for adjusting the amplitude of the pulses, the horizontal and vertical correction circuits further comprising respective means for supplying the pulses, after processing by the amplitude adjusting means and the selective inverting means, to respective horizontal and vertical deflecting means for shifting the scanning raster.
Claim 10
Dependent Claim
151 words
An apparatus as claimed in claim 6, wherein the shifting means comprises respective correction circuits for horizontal and vertical shifting of the scanning raster, wherein each correction circuit comprises means for generating a series of pulses of which each pulse has a duration of one field period, the series of pulses comprising three component series of pulses of different pulse amplitude and one fifth the field frequency with the pulses of greatest amplitude being delayed by one field period relative to the pulses of least amplitude and by three field periods relative to the pulses of intermediate amplitude, means for selectively inverting the pulses, and means for adjusting the amplitude of the pulses, the horizontal and vertical correction circuits further comprising respective means for supplying the pulses, after processing by the amplitude adjusting means and the selective inverting means, to respective horizontal and vertical deflecting means for shifting the scanning raster.
Claim 11
Dependent Claim
53 words
An apparatus as claimed in claim 7, further comprising means for automatically controlling the selective inverting means and the amplitude adjusting means whereby during a period of panning and/or tilting in the scene recorded on the cinema film pulses of correct amplitude and polarity are supplied to the vertical and/or horizontal deflection means.
Claim 12
Dependent Claim
53 words
An apparatus as claimed in claim 8, further comprising means for automatically controlling the selective inverting means and the amplitude adjusting means whereby during a period of panning and/or tilting in the scene recorded on the cinema film pulses of correct amplitude and polarity are supplied to the vertical and/or horizontal deflection means.
References Cited (Backward Citations)
US3410954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-13 | 1983-02-12 | 1983-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-13 | 1987-02-12 | 1987-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-13 | 1991-02-12 | 1991-08-14 | $7700.00 | Window Closed / Lapsed |