US3578852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motion picture apparatus having sensing means for film carried cue signals
Assignee: Bell and Howell Co
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Filing: 1968-06-10
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Granted: 1971-05-18
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Expires: 1988-06-10
Abstract
Abstract An apparatus for projecting motion picture films has a sensing station located adjacent the path of each margin of the film for sensing control marks on the film. The sensing stations may be selectively actuated to respond to markings on either of the marginal areas or to respond only to the simultaneous occurrence of markings on both marginal areas.
Inventors
- 👤 Charles A Aldridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:31
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/24; G03B17/245; G03B21/00; G03B21/14; G03B21/32; G03B21/50; G03B2206/00; G03B2206/004; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/243; G03B2217/246
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
199 words
In apparatus for sensing transparent control markings on a motion picture film on which first ones of said control markings are located in a first marginal region of said motion picture film, and second ones of said control markings are located in a second marginal region of said motion picture film spaced from said first marginal region: a. means defining a sensing station and including: 1. means for producing an electric signal in response to light; and 2. means for sending a beam of light through a first portion of said sensing station and thereupon to said light-responsive means through a second portion of said sensing station, with the spacing between said first and second portions corresponding substantially to the spacing between said first and second marginal film regions; and b. means for moving said film through said sensing station so that said first marginal film region moves through said first portion of the sensing station and said second marginal film region moves through said second portion of said sensing station, whereby said beam of light is interrupted unless a said transparent first control marking and a said transparent second control marking are simultaneously present in said sensing station.
Claim 2
Dependent Claim
199 words
In apparatus for sensing transparent control markings on a motion picture film on which first ones of said control markings are located in a first marginal region of said motion picture film, and second ones of said control markings are located in a second marginal region of said motion picture film spaced from said first marginal region: a. means defining a sensing station and including: 1. means for producing an electric signal in response to light; and 2. means for sending a beam of light through a first portion of said sensing station and thereupon to said light-responsive means through a second portion of said sensing station, with the spacing between said first and second portions corresponding substantially to the spacing between said first and second marginal film regions; and b. means for moving said film through said sensing station so that said first marginal film region moves through said first portion of the sensing station and said second marginal film region moves through said second portion of said sensing station, whereby said beam of light is interrupted unless a said transparent first control marking and a said transparent second control marking are simultaneously present in said sensing station.
Claim 3
Dependent Claim
121 words
means for sending a beam of light through a first portion of said sensing station and thereupon to said light-responsive means through a second portion of said sensing station, with the spacing between said first and second portions corresponding substantially to the spacing between said first and second marginal film regions; and b. means for moving said film through said sensing station so that said first marginal film region moves through said first portion of the sensing station and said second marginal film region moves through said second portion of said sensing station, whereby said beam of light is interrupted unless a said transparent first control marking and a said transparent second control marking are simultaneously present in said sensing station.
Claim 4
Dependent Claim
121 words
means for sending a beam of light through a first portion of said sensing station and thereupon to said light-responsive means through a second portion of said sensing station, with the spacing between said first and second portions corresponding substantially to the spacing between said first and second marginal film regions; and b. means for moving said film through said sensing station so that said first marginal film region moves through said first portion of the sensing station and said second marginal film region moves through said second portion of said sensing station, whereby said beam of light is interrupted unless a said transparent first control marking and a said transparent second control marking are simultaneously present in said sensing station.
Claim 5
Independent Claim
51 words
An apparatus for sensing transparent control markings on a motion picture film having first transparent control markings located in a first marginal region of said motion picture film, and second transparent control markings located on a second marginal region of said motion picture film spaced from said first marginal region comprising:
Claim 6
Independent Claim
51 words
An apparatus for sensing transparent control markings on a motion picture film having first transparent control markings located in a first marginal region of said motion picture film, and second transparent control markings located on a second marginal region of said motion picture film spaced from said first marginal region comprising:
Claim 7
Dependent Claim
5 words
first and second sensing stations;
Claim 8
Dependent Claim
5 words
first and second sensing stations;
Claim 9
Dependent Claim
32 words
means for projecting light through said first sensing station and thereupon to said light responsive means, and for projecting light through said second sensing station and thereupon to said light-responsive means; and
Claim 10
Dependent Claim
32 words
means for projecting light through said first sensing station and thereupon to said light responsive means, and for projecting light through said second sensing station and thereupon to said light-responsive means; and
Claim 11
Independent Claim
144 words
An apparatus for sensing control markings on a motion picture film having first control markings located on a first marginal region of said motion picture film, and second control markings located on a second marginal region of said motion picture film comprising: a. means defining a sensing station; said sensing station including sensing means for detecting the presence of a control marking on said film; b. means selectively actuable from a first mode of operation to a second mode of operation rendering said sensing means operative for sensing in said first mode of operation only the substantially simultaneous occurrence of the first control markings and the second control marking at said sensing station, and sensing in said second mode of operation the individual occurrence of the first control markings at said sensing station; and c. means for moving said film through said sensing stations.
Claim 12
Independent Claim
144 words
An apparatus for sensing control markings on a motion picture film having first control markings located on a first marginal region of said motion picture film, and second control markings located on a second marginal region of said motion picture film comprising: a. means defining a sensing station; said sensing station including sensing means for detecting the presence of a control marking on said film; b. means selectively actuable from a first mode of operation to a second mode of operation rendering said sensing means operative for sensing in said first mode of operation only the substantially simultaneous occurrence of the first control markings and the second control marking at said sensing station, and sensing in said second mode of operation the individual occurrence of the first control markings at said sensing station; and c. means for moving said film through said sensing stations.
Claim 13
Dependent Claim
26 words
sElectively actuable means for alternatively blocking the flow of light through said first station only or the flow of light through said second station only; and
Claim 14
Dependent Claim
26 words
sElectively actuable means for alternatively blocking the flow of light through said first station only or the flow of light through said second station only; and
Claim 15
Dependent Claim
34 words
The apparatus of claim 3 further including means for actuating said sensing means to a third mode of operation for sensing only the individual occurrence of the second control marking at said sensing station.
Claim 16
Dependent Claim
106 words
means for moving said film through said first and second sensing stations so that said first marginal film region moves through said first sensing station and said second marginal film region moves through said second sensing station, whereby said signal-producing means responds to light passed by said transparent second control markings when said alternative blocking means have been actuated to block a flow of said light through said first sensing station, and whereby said signal-producing means responds to light passed by said transparent first control markings when said alternate blocking means have been actuated to block a flow of said light through said second sensing station.
Claim 17
Dependent Claim
106 words
means for moving said film through said first and second sensing stations so that said first marginal film region moves through said first sensing station and said second marginal film region moves through said second sensing station, whereby said signal-producing means responds to light passed by said transparent second control markings when said alternative blocking means have been actuated to block a flow of said light through said first sensing station, and whereby said signal-producing means responds to light passed by said transparent first control markings when said alternate blocking means have been actuated to block a flow of said light through said second sensing station.
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |