EP0331049A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Apparatus for reading bar code of photographic film
Assignee: Fujifilm Holdings Corp
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Filing: 1989-02-24
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Granted: —
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Expires: 2009-02-24
Abstract
Abstract Two bar code sensors (8, 9) are disposed at opposite sides of a passage of a photographic film (2), each bar code sensor having first and second photosensor arrays. The first and second photosensor arrays are disposed so as to be located at the passages of the clock track and the data track, respectively, along the line perpendicular to the transportation direction of the photographic film. The DX bar code data (5) and frame number bar code (4) data are automatically discriminated based on the bar code data configuration read out with the bar code sensor units (8, 9). The setting conditions of the photographic film is detected based also on the bar code data configuration. In case of an abnormal state of the setting conditions, an alarm display is carried out. The bar code data is written in a memory when they change or in synchro with reading the clock track of the DX bar code. The number of a frame set at the film mask is calculated by measuring the feed amount of the read-out frame number bar code.
Inventors
- 👤 Yoshihiko C/O Fuji Photo Film Co. Ltd. Saeki
- 👤 Yohichi C/O Fuji Photo Film Co. Ltd. Ujiie
- 👤 Shuji C/O Fuji Photo Film Co. Ltd. Tahara
- 👤 Kanji C/O Fuji Photo Film Co. Ltd. Tokuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 10:49
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/46; G03B27/462; G03B27/52; G03B27/62; G03B27/6271; G03B27/6285; G06; G06K; G06K17/00; G06K17/0016; G06K17/0019
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
112 words
An apparatus for reading a DX bar code recorded on one side portion of a photographic film and a frame number bar code recorded on the other side portion, the DX bar code being constructed of a clock track and a data track, comprising: two bar code sensor units mounted at opposite sides of a passage of said photographic film, each said bar code sensor unit being provided with first and second photosensor arrays, and said first and second photosensor arrays being disposed so as to be located at the passages of said clock track and said data track, respectively, along the line perpendicular to the transportation direction of said photographic film.
Claim 2
Independent Claim
112 words
An apparatus for reading a DX bar code recorded on one side portion of a photographic film and a frame number bar code recorded on the other side portion, the DX bar code being constructed of a clock track and a data track, comprising: two bar code sensor units mounted at opposite sides of a passage of said photographic film, each said bar code sensor unit being provided with first and second photosensor arrays, and said first and second photosensor arrays being disposed so as to be located at the passages of said clock track and said data track, respectively, along the line perpendicular to the transportation direction of said photographic film.
Claim 3
Dependent Claim
33 words
An apparatus according to claim 1, wherein said frame number bar code is represented by binary signals "1" and "0" which values are determined in correspondence to the widths of bar or space.
Claim 4
Dependent Claim
49 words
An apparatus according to claim 2, wherein a narrower bar or space has the same width as that of the bar of said DX bar code, and a wider bar or space has the width two times as large as that of the bar of said DX bar code.
Claim 5
Dependent Claim
52 words
An apparatus according to claim 1 or 3, wherein each said photosensor array is composed of four photosensors disposed at a constant pitch in the direction of feeding said photographic film, said pitch allowing two of said four photosensors to face one bar of said DX bar code at the same time.
Claim 6
Dependent Claim
34 words
An apparatus according to claim 4, wherein said photosensor array is fabricated as an amorphous sensor which is disposed in contact with said photographic film to read a bar code with light transmitted therethrough.
Claim 7
Dependent Claim
57 words
An apparatus according to claim 4, further comprising means for detecting that said first photosensor array reads a bar of said clock track, means for sampling an output from said second photosensor array in synchro with reading a bar by said first photosensor array, and means for generating said bar code data based on said sampled signal.
Claim 8
Dependent Claim
126 words
An apparatus according to claim 4, further comprising: a plurality of differential amplifiers for generating a difference signals between the output signals from adjacent two photosensors of each of said photosensor array; a plurality of window comparators each generating a first signal of high level "H" when the output signal from each said differential amplifier is higher than a first reference voltage, and a second signal of low level "L" when the output signal from said differential amplifier is lower than a second reference voltage which is lower than said second reference voltage; and means for generating said bar code data by sampling said first and second signals from said window comparators when any one of said first and second signals from said window comparators changes.
Claim 9
Dependent Claim
67 words
An apparatus according to claim 6 or 7 further comprising means for automatically discriminating between the DX bar code data and the frame number bar code data, based on two types of said bar code data read out with said two bar code sensors, and obtaining a film type from said discriminated DX bar code data and a frame number from said frame number bar code data.
Claim 10
Dependent Claim
43 words
An apparatus according to claim 8, further comprising means for judging the setting conditions of said photographic film at a film carrier based on said read-out two types of said bar code data, and means for alarming a state of abnormal setting conditions.
Claim 11
Dependent Claim
22 words
An apparatus according to claim 9, wherein said setting conditions of said photographic film include a film direction and a film side.
Claim 12
Dependent Claim
18 words
An apparatus according to claim 10, further comprising means for designating said film direction of said photographic film.
Claim 13
Independent Claim
122 words
An apparatus according to any one of claims 6, 7 and 8, further comprising means for measuring the feed amount of the read-out frame number bar code, from a reference position which is the mounting position of said bar code sensor unit, means for obtaining a distance to the center of a film mask from the read-out frame number bar code or associated side-printed frame number, based on said measured feed amount, and means for obtaining the number of frames by dividing said distance by the pitch of said frame number bar code or associated side-printed frame number, and calculating the frame number of a frame set at said film mask, based on said number of frames and said read-out frame number.
Claim 14
Dependent Claim
91 words
An apparatus according to claim 12, wherein said feed amount measuring means comprises a perforation sensor for detecting a perforation of said photographic film, a first counter for counting an output signal from said perforation sensor, and a second counter for counting a drive pulse used in feeding said photographic film, said second counter being reset in synchro with each count operation by said first counter, whereby said feed amount of said read-out frame number bar code is measured based on the number of perforations and the number of drive pulses.
Claim 15
Independent Claim
156 words
An apparatus for reading at least one kind of bar codes recorded on one side portion of a photographic film, the bar code being constructed of a start code part, an end code part, and data code part located between the start and end code parts, said apparatus comprising: two bar code sensor units mounted at opposite sides of a passage of said photographic film, each said bar code sensor unit being provided with two photosensor arrays disposed in a line perpendicular to a direction in which said photographic film is transported; means for detecting which one of said two bar code sensor units reads a dar code and which one of said start and end code parts of said bar code said one of said two bar code sensor units reads, thereby discriminating how loaded said photographic film is in a carrier; and means for giving a warning when said photographic film is incorrectly loaded.
Claim 16
Independent Claim
156 words
An apparatus for reading at least one kind of bar codes recorded on one side portion of a photographic film, the bar code being constructed of a start code part, an end code part, and data code part located between the start and end code parts, said apparatus comprising: two bar code sensor units mounted at opposite sides of a passage of said photographic film, each said bar code sensor unit being provided with two photosensor arrays disposed in a line perpendicular to a direction in which said photographic film is transported; means for detecting which one of said two bar code sensor units reads a dar code and which one of said start and end code parts of said bar code said one of said two bar code sensor units reads, thereby discriminating how loaded said photographic film is in a carrier; and means for giving a warning when said photographic film is incorrectly loaded.
References Cited (Backward Citations)
No citation records indexed.
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