US5337154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Format conversion of digital video signals, integration of digital video signals into photographic film material and the like, associated signal processing, and motion compensated interpolation of images
Assignee: Sony United Kingdom Ltd
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Filing: 1993-07-19
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Granted: 1994-08-09
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Expires: 2013-07-19
Abstract
Abstract A system for integrating film material with a digital video signal employs a film scanner to produce a digital video signal from the source film, and a post production system for combining with that signal the input digital video signal. Motion interpolated temporal compensation is employed at stages of frame rate conversion.
Inventors
- 👤 Martin R. Dorricott
- 👤 Clive H. Gillard
- 👤 John W. Richards
- 👤 Tsuneo Morita
- 👤 James J. Galt
- 👤 Morgan W. A. David
- 👤 James E. Burns
- 👤 Shima R. Varsani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:12
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/01; H04N7/0135; H04N7/014; G; G11; G11B; G11B27/00; G11B27/02; G11B27/022; G11B27/024; G11B27/028; G11B27/031; G11B27/032; H04N19/00; H04N19/60; H04N19/61; H04N19/615; H04N19/63; H04N5/00; H04N5/222; H04N5/253; H04N5/76; H04N5/84; H04N5/87; H04N7/0105; H04N7/011; H04N7/0112; H04N7/0117; H04N7/012; G11B2220/00; G11B2220/90; H04N19/10; H04N19/102; H04N19/13; H04N19/30; H04N19/39
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
191 words
A method of converting an input 24 frame/s progressive scan format digital video signal into an output 60 field/s 2:1 interlace scan format digital video signal, comprising the step of forming fields of the output signal from frames of the input signal such that at least four of every five output fields are produced by motion compensated interpolation between successive pairs of the input frames, and wherein a series of five successive output fields are produced from a series of three successive input frames such that: a) the first output field is produced from the first input frame without motion compensated interpolation; b) the second output field is produced by motion compensated interpolation two-fifths of the way between the first and second input frames; c) the third output field is produced by motion compensated interpolation four-fifths of the way between the first and second input frames; d) the fourth output field is produced by motion compensated interpolation one-fifth of the way between the second and third input frames; and e) the fifth output field is produced by motion compensated interpolation three-fifths of the way between the second and third input frames.
Claim 2
Independent Claim
191 words
A method of converting an input 24 frame/s progressive scan format digital video signal into an output 60 field/s 2:1 interlace scan format digital video signal, comprising the step of forming fields of the output signal from frames of the input signal such that at least four of every five output fields are produced by motion compensated interpolation between successive pairs of the input frames, and wherein a series of five successive output fields are produced from a series of three successive input frames such that: a) the first output field is produced from the first input frame without motion compensated interpolation; b) the second output field is produced by motion compensated interpolation two-fifths of the way between the first and second input frames; c) the third output field is produced by motion compensated interpolation four-fifths of the way between the first and second input frames; d) the fourth output field is produced by motion compensated interpolation one-fifth of the way between the second and third input frames; and e) the fifth output field is produced by motion compensated interpolation three-fifths of the way between the second and third input frames.
Claim 3
Dependent Claim
81 words
A method as claimed in claim 1, further comprising the steps of repeating in a first series each input frame 5R times with R being an integer, producing a new frame in a second series in the 60 field/s 2:1 interlace format for every 4R repeated input frames, repeating each new frame in the second series with a repeat rate of 4R times, and outputting one in every 4R fields of the second series of frames as a respective output field.
Claim 4
Dependent Claim
94 words
A method as claimed in claim 2, wherein the input frames are provided as 2:1 interlace field pairs in which the fields of each pair represent respective temporally identical portions of the input image, wherein the fields of each input field pair are each repeated with a repeat rate 5R times, wherein an intermediate series of progressive scan format frames is produced from the input fields with each progressive scan format frame being produced from a respective pair of the fields, and wherein the output fields are formed from the progressive scan format frames.
Claim 5
Dependent Claim
125 words
A method as claimed in claim 1, wherein the input frames are provided in 60 field/s 2:1 interlaced 3232 pulldown format, and further comprising the steps of repeating in a first series each input field 4R times with R being an integer, producing once for every 10R repeated input fields a new progressive scan format frame in an intermediate series from pairs of successive non-repeat input fields, producing from the intermediate series a new frame in a second series in the 60 field/s 2:1 interlace formate for every 4R repeated input frames, repeating each new frame in the second series with a repeat rate of 4R times, and outputting one in every 4R fields of the second series of frames as a respective output field.
Claim 6
Dependent Claim
12 words
A method as claimed in claim 2, wherein said integer is 5.
Claim 7
Independent Claim
189 words
A method of converting an input 24 frame/s progressive scan format digital video signal into an output 30 frame/s progressive scan format digital video signal, comprising the step of forming frames of the output signal from frames of the input signal such that at least four of every five output frames are produced by motion compensated interpolation between successive pairs of the input frames, wherein a series of five successive output frames are produced from a series of five successive input frames such that: a) the first output frame is produced from the first input frame without motion compensated interpolation; b) the second output frame is produced by motion compensated interpolation four-fifths of the way between the first and second input frames; c) the third output frame is produced by motion compensated interpolation three-fifths of the way between the second and third input frames; d) the fourth output frame is produced by motion compensated interpolation two-fifths of the way between the third and fourth input frames; and e) the fifth output frame is produced by motion compensated interpolation one-fifth of the way between the fourth and fifth input frames.
Claim 8
Independent Claim
189 words
A method of converting an input 24 frame/s progressive scan format digital video signal into an output 30 frame/s progressive scan format digital video signal, comprising the step of forming frames of the output signal from frames of the input signal such that at least four of every five output frames are produced by motion compensated interpolation between successive pairs of the input frames, wherein a series of five successive output frames are produced from a series of five successive input frames such that: a) the first output frame is produced from the first input frame without motion compensated interpolation; b) the second output frame is produced by motion compensated interpolation four-fifths of the way between the first and second input frames; c) the third output frame is produced by motion compensated interpolation three-fifths of the way between the second and third input frames; d) the fourth output frame is produced by motion compensated interpolation two-fifths of the way between the third and fourth input frames; and e) the fifth output frame is produced by motion compensated interpolation one-fifth of the way between the fourth and fifth input frames.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-08-08 | 1998-02-07 | 1998-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-08 | 2002-02-07 | 2002-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-08 | 2006-02-07 | 2006-08-09 | $7700.00 | Window Closed / Lapsed |