US3867030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film control system by picture frame edge signals of a film
Assignee: Individual
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Filing: 1973-03-19
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Granted: 1975-02-18
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Expires: 1993-03-19
Abstract
Abstract In a film control system in which, while a film with a number of picture frames disposed in alignment thereon is being transferred in the direction of picture frame disposition, a detecting means detects the density change on the film to generate signals. A first discriminating means distinguishes from these detected signals, the picture frame edge signals for recording the detected signals on the recording tape. When, according to the recorded signals, the picture frame is positioned exactly at the exposure station disposed on the film path, the first discriminating means causes the stopper to be actuated, thereby stopping the transfer of the film. There are also provided a recording roller rotating in association with transfer of the film; a recording head for recording signals from the detecting means into the recording roller through a gate; four reading heads each arranged at a predetermined position with respect to the recording head; and a second discriminating means whose output causes operation of the stopper for bringing the film to an emergency stop, when the outputs of the recording heads actuate the gate and the second discriminator does not detect a true picture frame edge signal.
Inventors
- 👤 Atsuyuki Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:35
CPC Classifications
G; G03; G03D; G03D15/00; G03D15/04; G03D15/043; G03B; G03B27/00; G03B27/02; G03B27/04; G03B27/08; G03B27/32; G03B27/52; G03B27/62; G03B27/6271; G03B27/6285
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
542 words
A system for controlling a mechanism for transporting a film along a first path, said film having a number of picture frames surrounded by black frames and successively disposed on said film in the direction of said first path, where each frame has a length of ao + OR - ax, where ao is the mean value and ax is the tolerance and between neighboring picture frames there is an interval of bo + OR - bx, where bo is the mean value and bx is the tolerance, said system including detecting means positioned along said first path for generating output signals in response to the density of said film, a first recording medium driven along a second path in synchronism with said transporting mechanism, first recording means for recording signals which include signals indicative of fore and aft edges of the picture frames on said first recording medium in response to the output signals from said detecting means, first means for discriminating said recorded signals on said first recording medium to determine true fore and aft edge signals of one of said picture frames, an exposure station positioned along said first path, means for stopping actuated by an output from said first means for discriminating to stop the transportation of said film for positioning said picture frame having at least one of said detected fore and aft edge signals at said exposure station, said system comprising: a second recording medium driven along a third path in synchronization with said transporting mechanism; second recording means having its input coupled to the output of said detectIng means and disposed on said third path for recording signals on said second recording medium; second means for discriminating whether a respective signal of two kinds of output signals from said detecting means is a true fore or aft signal; first means coupled between said detecting means and said second recording means for supplying first of said two kinds of output signals which change from a higher level of an output signal of said detecting means to a lower level only when it is determined that the fore edge of one of the picture frames passes through said detecting means, to said second recording means and said second means for discriminating through the use of signals recorded on said second recording medium and on the basis of a mean value (bo) of intervals between neighborning picture frames with each other disposed on the film and the tolerance (bx) thereof; second means supplying second of said two kinds of output signals which change from a lower level of an output signal of said detecting means to a higher level only when it is determined that the aft edge of one of the picture frames passes through said detecting means, to said second means for discriminating through the use of signals recorded on said recording medium and on the basis of a mean value (ao) of length picture frames disposed on the film and the tolerance (ax) thereof; and said second means for discriminating generating an output for abruptly stopping said film transportation by rapidly actuating said means for stopping when neither of said two kinds of output signals is discriminated to be a true fore or aft signal.
Claim 2
Independent Claim
542 words
A system for controlling a mechanism for transporting a film along a first path, said film having a number of picture frames surrounded by black frames and successively disposed on said film in the direction of said first path, where each frame has a length of ao + OR - ax, where ao is the mean value and ax is the tolerance and between neighboring picture frames there is an interval of bo + OR - bx, where bo is the mean value and bx is the tolerance, said system including detecting means positioned along said first path for generating output signals in response to the density of said film, a first recording medium driven along a second path in synchronism with said transporting mechanism, first recording means for recording signals which include signals indicative of fore and aft edges of the picture frames on said first recording medium in response to the output signals from said detecting means, first means for discriminating said recorded signals on said first recording medium to determine true fore and aft edge signals of one of said picture frames, an exposure station positioned along said first path, means for stopping actuated by an output from said first means for discriminating to stop the transportation of said film for positioning said picture frame having at least one of said detected fore and aft edge signals at said exposure station, said system comprising: a second recording medium driven along a third path in synchronization with said transporting mechanism; second recording means having its input coupled to the output of said detectIng means and disposed on said third path for recording signals on said second recording medium; second means for discriminating whether a respective signal of two kinds of output signals from said detecting means is a true fore or aft signal; first means coupled between said detecting means and said second recording means for supplying first of said two kinds of output signals which change from a higher level of an output signal of said detecting means to a lower level only when it is determined that the fore edge of one of the picture frames passes through said detecting means, to said second recording means and said second means for discriminating through the use of signals recorded on said second recording medium and on the basis of a mean value (bo) of intervals between neighborning picture frames with each other disposed on the film and the tolerance (bx) thereof; second means supplying second of said two kinds of output signals which change from a lower level of an output signal of said detecting means to a higher level only when it is determined that the aft edge of one of the picture frames passes through said detecting means, to said second means for discriminating through the use of signals recorded on said recording medium and on the basis of a mean value (ao) of length picture frames disposed on the film and the tolerance (ax) thereof; and said second means for discriminating generating an output for abruptly stopping said film transportation by rapidly actuating said means for stopping when neither of said two kinds of output signals is discriminated to be a true fore or aft signal.
Claim 3
Dependent Claim
266 words
A system as in claim 1, further comprising: first sensing means disposed on said third path in the direction in which said second recording medium is driven and in a position spaced from said recording means by a distance at least equal to the length of the tolerance (ax) of the length of respective picture frames subtracted from the mean value (ao) of the length of respective picture frames; second sensing means disposed on said third path in said direction, spaced from said first sensing means by a distance at least twice the length of the tolerance (ax) of the length of said picture frames; third sensing means disposed on said third path in said direction, spaced from said recording means by a distance at least equal to the length of tolerance (bx) of intervals between neighboring picture frames with each other subtracted from the mean value (bo) of intervals therebetween; fourth sensing means disposed on said third path in said direction, spaced from said third sensing means by a distance at least twice the length of the tolerance (bx) of said intervals; a first gating means opened by a reading signal of said third sensing means and closed by a reading signal of said fourth sensing means, for transmitting signals past through said first means to said second recording means and said second means for discriminating; and second gating means opened by a reading signal of said first sensing means and closed by a reading signal of said second sensing means, for transmitting signals past through said second means to said second means for discriminating.
Claim 4
Dependent Claim
70 words
A system as in claim 2, wherein there is provided means for determining that the signals supplied to said second means for discriminating from both said first gating means and said second gating means are both a non-signal, which is indicative of an unexposed frame, said determining means preventing the generation of signals for operating said means for stopping said second means for discriminating when said both signals are non-signals.
Claim 5
Dependent Claim
189 words
A system as in claim 2, further comprising: signal generating means into which a reading signal of said fourth sensing means is supplied and generates signals after the time required for the film to be transferred by a distance slighTly longer than the length of the minimum interval (bo -bx) between neighboring picture frames with each other subtracted from the maximum distance thereof (ao - ax) which has lapsed from the moment when said reading signal of said fourth sensing means was supplied; third gating means closed only when signals passing through said second gating means are received and for transmitting signals generated by said signal generating means to said second means for discriminating when opened; fourth gating means opened by signals passing through said first gating means and said third gating means and closed by a reading signal of said first sensing means, and for transmitting signals of said detecting means to said second means for discriminating; and means for preventing the generation of signals for operating said means for stopping in said second means for discriminating by the use of signals passing through said fourth gating means.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |