US3868645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically finding microdocuments on a film
Assignee: Individual
•
Filing: 1972-07-10
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Granted: 1975-02-25
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Expires: 1992-07-10
Abstract
Abstract An apparatus for automatically finding microdocuments on a film comprises a film reader having a pick-up to provide signals defining the position of microdocuments on a film, a magnetic tape recorder for recording those signals together with corresponding addresses for the microdocuments, and logic units enabling a predetermined address on the tape to be located and the corresponding position signal to be read out and utilised to control the film reader to find the microdocument having the position represented by the signal read out.
Inventors
- 👤 Jean Delplanque
- 👤 Jacques Foursy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:25
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/111; G03B21/113; G06; G06K; G06K17/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
155 words
An apparatus for locating frames of a film, the apparatus comprising: a film reader having means for driving a film; sensing means for sensing the position of said frames of said film as said film is driven; a magnetic recording reader adapted to receive a magnetic recording medium independent of said film, said medium having recorded thereon a plurality of words corresponding to respective one of said frames to be located; means responsive to said sensing means and adapted to supply to said reader data defining the position of said frames identified by said words, said data also being recorded on said medium; searching means for searching said medium in said magnetic recording reader to find a word corresponding to a frame to be located; and means for stopping the driving means of said film when said sensing means senses a position corresponding to the location of said word found in said magnetic recording reader.
Claim 2
Independent Claim
155 words
An apparatus for locating frames of a film, the apparatus comprising: a film reader having means for driving a film; sensing means for sensing the position of said frames of said film as said film is driven; a magnetic recording reader adapted to receive a magnetic recording medium independent of said film, said medium having recorded thereon a plurality of words corresponding to respective one of said frames to be located; means responsive to said sensing means and adapted to supply to said reader data defining the position of said frames identified by said words, said data also being recorded on said medium; searching means for searching said medium in said magnetic recording reader to find a word corresponding to a frame to be located; and means for stopping the driving means of said film when said sensing means senses a position corresponding to the location of said word found in said magnetic recording reader.
Claim 3
Dependent Claim
53 words
An apparatus as claimed in claim 1 further comprising comparison means for comparing that position data read from said medium which corresponds to said word found by said searching means with the frame position as sensed by said sensing means and for operating said stopping means when correspondence between the positions is sensed.
Claim 4
Dependent Claim
36 words
An apparatus as claimed in claim 2, and comprising means for operating said film driving means to drive said film in one of two opposite directions in dependence upon the comparison result of said comparing means.
Claim 5
Dependent Claim
54 words
An apparatus as claimed in claim 2, and comprising means for operating the film driving means to drive said film at a first speed and then at a second, lower, speed with the transition from said first speed to said second speed being effected in dependence upon the comparison result of said comparing means.
Claim 6
Dependent Claim
67 words
An apparatus as claimed in claim 3, wherein the comparing means comprises a first comparator for determining the magnitude of the difference between the compared positions and a second comparator for determining the direction of said difference, and wherein said apparatus also comprises means for operating said film driving means at a rate dependent upon said first comparator and in a direction dependent upon said second comparator.
Claim 7
Dependent Claim
52 words
An apparatus as claimed in claim 2, wherein said sensing means comprises a pickup device maintained in contact with said film and adapted to emit pulses in synchronism with the driving of said film and a forward-backward counter connected to count said pulses and deliver the counting result to said comparing means.
Claim 8
Dependent Claim
44 words
An apparatus as claimed in claim 6, wherein said recording medium reader is also a recorder for recording both said words and said position data, and said counter is connected to supply said medium reader with said position data for recording with said words.
Claim 9
Dependent Claim
12 words
An apparatus as claimed in claim 7, wherein the medium is tape.
Claim 10
Dependent Claim
46 words
An apparatus as claimed in claim 2, wherein said recording medium reader is also a recorder for recording both said words and said position data, and is connected to said sensing means to receive therefrom said position data for recording in association with the corresponding words.
Claim 11
Dependent Claim
37 words
An appartus as claimed in claim 9, wherein said sensing means comprises a pulse generator for emitting pulses in step with the driving of the film and said position data consists of a record of said pulses.
Claim 12
Dependent Claim
26 words
An apparatus as claimed in claim 10, and comprising an alphanumeric keyboard by which said words to be recorded and found are introduced into said apparatus.
Claim 13
Dependent Claim
64 words
An apparatus as claimed in claim 10, and comprising input means for inputing words to be recorded and words to be found, said input means being coupled to the recording medium reader for the recording of said words, and said apparatus also comprising a first memory tO which said input means are coupled for storing a word to be found for said searching means.
Claim 14
Dependent Claim
57 words
An apparatus as claimed in claim 12, wherein the searching means comprises a second memory coupled to receive said words read by said medium reader and a coincidence circuit coupled to compare the contents of said first and second memories and having an output for delivering an output signal on correspondence of the contents of said memories.
Claim 15
Dependent Claim
53 words
An apparatus as claimed in claim 13, and comprising a further counter for storing position data read from said medium and a third memory coupled to receive the content of said counter when said coincidence circuit delivers said output signal, said comparing means being connected to receive the content of said third memory.
Claim 16
Dependent Claim
25 words
An apparatus as claimed in claim 14, and comprising means for stopping the drive of said medium when said coincidence circuit delivers said output signal.
Claim 17
Dependent Claim
15 words
An apparatus as cliamed in claim 15, wherein the input means comprises an alphanumeric keyboard.
Claim 18
Dependent Claim
20 words
An apparatus as claimed in claim 16, and comprising a visual display for displaying the content of said first memory.
Claim 19
Dependent Claim
63 words
An apparatus as claimed in claim 15, wherein said comparing means comprises a first comparator for determing when the difference between the compared positions has a magnitude less than a predetermined value for reducing the drive speed of said film, and a second comparator for determining the polarity of said difference for controlling the direction and the stopping of drive of said film.
Claim 20
Dependent Claim
13 words
An apparatus as claimed in claim 15, wherein the medium is a tape.
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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |