Patent US4560260A successfully refreshed from Google Patents.
US4560260A
Expired / Lapsed
US
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Motion picture system
Assignee: SHOWCASE FILM Corp A DE CORP
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Filing: 1984-10-10
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Granted: 1985-12-24
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Expires: 2004-10-10
Abstract
Abstract A method is described for producing and projecting a theater quality entertainment motion picture, by photographing and then projecting the motion picture on a screen, which creates an unusually vivid impression of realism. The film frames have a resolution of over 40 line pairs per milimeter, and each frame has an area of at least 0.36 square inch, which creates more than 10 million pixels per frame on the film and on the screen. The illumination level on the screen is at least 15 foot lamberts. The film frames are photographed and projected at a predetermined constant rate of more than 50 frames per second, such as 60 fps. The high resolution and light level, combined with the unusually high frame rate, has been found to produce an unusually vivid impression of realism.
Inventors
- 👤 Douglas Trumbull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:46
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/20; G03B21/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
138 words
A method for producing a motion picture image that creates a vivid impression of realism in observers comprising: exposing a strip of light sensitive film through a camera lens to form images on individual film frames spaced along the length of the film, at a predetermined constant frame rate; and projecting said film strip onto a screen, while advancing said strip at the same frame rate as the one at which the film was exposed; said step of exposing and projecting including creating images on said film having a resolution of more than 40 line pairs per milimeter and a frame area of at least 0.36 square inch; said step of projecting includes producing an illumination level of at least 15 foot lamberts on said screen; and said constant frame rate is at least 50 frames per second.
Claim 2
Independent Claim
138 words
A method for producing a motion picture image that creates a vivid impression of realism in observers comprising: exposing a strip of light sensitive film through a camera lens to form images on individual film frames spaced along the length of the film, at a predetermined constant frame rate; and projecting said film strip onto a screen, while advancing said strip at the same frame rate as the one at which the film was exposed; said step of exposing and projecting including creating images on said film having a resolution of more than 40 line pairs per milimeter and a frame area of at least 0.36 square inch; said step of projecting includes producing an illumination level of at least 15 foot lamberts on said screen; and said constant frame rate is at least 50 frames per second.
Claim 3
Dependent Claim
53 words
The method described in claim 1 wherein: said step of projecting includes passing more than 3400 lumens of light through each frame of said film, said screen is at least 10 feet tall and 18 feet wide, and the flux density projected on said screen is at least 18.5 lumens per square foot.
Claim 4
Dependent Claim
27 words
The method described in claim 1 wherein: each frame of said film has a height of at least 0.446 inch and a width greater than its height.
Claim 5
Independent Claim
167 words
A method for producing a motion picture image that creates a vivid impression of realism in observers, comprising: taking a motion picture, including focusing light through a camera lens onto a strip of film, at a predetermined constant frame rate; developing said film; and projecting a developed strip of film identical to said developed film, onto a screen, including passing light through the film and a projection lens onto a screen, at said predetermined frame rate; the amount of light passed through the film and the reflectance of the screen being sufficient to create an illumination level of more than 16.5 foot lamberts; the camera lens and projection lens each having sufficient resolution, the film stock having sufficient grain fineness, and the size of each frame being large enough, to provide a resolution of over 900 line pairs along both the width and height of a frame of the film and the image thereof on the screen; and said predetermined frame rate is 60 frames per second.
Claim 6
Independent Claim
167 words
A method for producing a motion picture image that creates a vivid impression of realism in observers, comprising: taking a motion picture, including focusing light through a camera lens onto a strip of film, at a predetermined constant frame rate; developing said film; and projecting a developed strip of film identical to said developed film, onto a screen, including passing light through the film and a projection lens onto a screen, at said predetermined frame rate; the amount of light passed through the film and the reflectance of the screen being sufficient to create an illumination level of more than 16.5 foot lamberts; the camera lens and projection lens each having sufficient resolution, the film stock having sufficient grain fineness, and the size of each frame being large enough, to provide a resolution of over 900 line pairs along both the width and height of a frame of the film and the image thereof on the screen; and said predetermined frame rate is 60 frames per second.
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) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |