JPH05341389A - Film bar code detecting method - Google Patents

Abstract

PURPOSE:To detect both kinds of bar code even in the case of using a photographic film where two kinds of bar code including frame number information, and to optionally select the frame number information coexist in either system. CONSTITUTION:The method is constituted of two bar code detecting means 2 and 3 which are positioned opposite to each other on both side ends of a photographic frame, a means for distinguishing whether the bar code is a frame number code, or a DX code, two storing means 4 and 5 for storing the information in a corresponding one based on the distinguishing result, an arithmetic and logical operation means 6 and a means 7 for selecting one of bar codes positioned on both sides, and the bar code information on an optionally selected side is adopted as the frame number.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to film bar code detection for accurately matching an order even if the bar code information attached to a photographic negative film is different in type, position, etc., depending on the manufacturer. Regarding the method.

[0002]

2. Description of the Related Art Film information for 35mm film for photography,
A bar code indicating a frame number indicating a frame number or the like is recorded as a latent image at a side end portion and visualized by a developing process. Since the method of recording the above bar code varies from film manufacturer to film manufacturer, in a lab that indiscriminately receives films from various manufacturers and develops and prints them, scans such bar codes and compares the order with the image frames. Or when trying to set printing exposure conditions,
The frame number must be accurately detected from the film of any manufacturer. For this reason, in the lab, there is a method of first checking the manufacturer name for each film, confirming the recording position of the frame number for each manufacturer, and adopting the bar code at that position as the frame number. It takes a lot of time to check, and as a result of the check, it is a problem of which side of the film the bar code is read according to the bar code at each recording position or both sides are read. You have to change the code detection means, these are equivalent to the changes in the settings of the baking system,
Since a considerable amount of skilled technician is required to change the setting, there has been a problem in making the baking work lighter and reducing the cost.

Next, the bar code information recorded on the side edges of the negative film may be inaccurately read due to the lack of perforation holes, and the density of the relevant part of the negative film may be the above. When the recording density of the bar code is close, the bar code detecting means may not be able to read it. Therefore, the data before and after the image frame or the entire length of the film is arithmetically processed to estimate the bar code information of the image frame with the unreadable bar code,
The frame number of the image frame was fixed, and the barcode information that was erroneously read by one reading was corrected to match the order.

However, unless it is possible to determine which side of the bar code indicates the frame number, the arithmetic processing for estimating the frame number of which the reading has failed cannot be performed, and which side does not work. There has been a demand for a method of automatically selecting whether the barcode of the above indicates a frame number.

[0005]

Even if the frame number is recorded on both sides of the photographic film or on either side, the frame number of the image frame can be simply detected by selecting the bar code indicating the frame number. It is an object of the present invention to provide a method for detecting a film bar code capable of confirming.

[0006]

SUMMARY OF THE INVENTION The film bar code detecting method of the present invention which achieves the above-mentioned object, in order to match the order and the image frame before the printing exposure is performed from the negative film to the photographic paper, the negative film In the film bar code detecting apparatus for detecting the bar code recorded on one side or both sides of the bar code by a plurality of bar code detecting means and specifying the image frame, the bar code information is the frame number or D
Discrimination means for discriminating whether the code is an X code, two storage means for storing information in one corresponding to the discrimination result by the discrimination means, and a logical operation for correcting and / or estimating the bar code information using the storage means And a selection means for selecting one of the barcodes on both sides,
For a film with only one type of barcode information, the barcode information is used as a frame number, and for a film in which two types of barcode information coexist, the barcode information of an arbitrarily selected side is used as a frame number. It is characterized by that.

[0007]

According to the discrimination result from the discriminating means for discriminating the bar code information between the frame number and the DX code, the two storage means for storing the information in the corresponding one are provided with the frame number and the DX code. By storing in a separate storage means, only the bar code information is arithmetically processed by the next logical operation means to estimate and correct the frame number that could not be read, and to confirm the image frame corresponding to the order. This is to do it quickly.

Next, for a film having only one kind of bar code information, it is determined that it is a frame number. Therefore, this information is used as a frame number for selecting means and both sides of the film. When the bar code is attached, the selection means for adopting the bar code information of the arbitrarily selected side as the frame number is provided because the bar code information is adopted as the frame number early by the selection means. By
The frame number information can be obtained easily and quickly without any complicated discriminating means or calculating means, and rather the calculation processing for estimating the frame number that could not be read can be focused on. It can be confirmed.

The film bar code detecting method of the present invention comprises:
Since it has such a configuration, for each manufacturer,
Alternatively, regardless of which side of the film the bar code indicating the frame number is recorded for each type of film or both sides of the film, the frame number can be detected, read and confirmed correspondingly. Therefore, it is not necessary to position the bar code detection unit according to the method of each maker and to identify the maker and change the setting for each film, which is a film bar code detection device that can be operated even by an unskilled technician. Since it is possible to provide the above, it is possible to lighten the baking work in the laboratory and contribute to the cost reduction.

[0010]

[Embodiment] An apparatus for printing and exposing a photographic negative film to photographic paper is a printing apparatus. The printing apparatus is provided with various kinds of information regarding printing so that the printing operation is smooth and there are no printing errors. Therefore, the negative film is applied to a specific detection device in advance to read information and store it as data.

In reading the above, according to the present invention, the frame number is promptly selected from the bar code information, and the bar code information which has failed to be read is calculated and estimated from the bar code information which has been successfully read. Thus, the reliability of matching the image frame with the frame number (frame number) of the negative ordered image frame is increased.

Next, the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram showing the structure of the present invention.

A bar code (A) indicating a frame number is recorded on one side end 1-A of the film 1, and a bar code indicating a frame number and a DX code mixedly on the other side end 1-B. (B) is recorded. Bar code detectors 2 and 3 are provided to read these bar codes (A) and (B), and the bar code is read while moving the film 1 in the arrow X direction. Two storage means 4 and 5 are provided, the information from the detector 2 is stored in the storage means 4 via the determination means, and the information from the detection means 3 is also stored in the storage means 5 via the determination means.

The information stored in these storage means 4 and 5 is
Since it is the frame number information that has already been determined to be the frame number, the frame number is estimated for the bar code that has failed to be read, by setting the frame number as a continuous number by the next logical operation means 6. , Confirm the frame number of the image frame that could not be read.

Further, when the bar code is recorded on both sides of the film as in this embodiment by providing the selecting means 7 connected, either one of the side end portions 1-A or 1-B is selected. A quick judgment result can be obtained by selecting and storing one of the information and performing a logical operation process.

In the embodiment of the present invention, a film in which bar codes are recorded on both side edges of a negative film is used as a negative carrier,
Alternatively, a mode has been shown in which the barcode is read by the barcode detectors 2 and 3 while moving in the direction of the arrow X with another conveying means, but the barcode detector may be a barcode reader using a known photoelectric sensor, The detector has an opening only in the portion where the barcode is recorded so as not to extract other noise.

The storage means 4, 5 and the logical operation means 6 may be connected by a conductor or by wireless communication, and the installation location may be arbitrarily selected. It is preferable that the selecting means 7 is provided in an operation section handled by an operator of a specific device for detecting the bar code.

[0019]

Since the film bar code detecting method of the present invention is constructed as described above, even if the frame number is recorded on both sides of the photographic film or on either side, the image can be easily detected. Since it is possible to determine the frame number of the frame, it is possible to easily and correctly match the frame number of the ordered frame with the frame number of the image frame when ordering and printing the films of various manufacturers.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment according to the present invention.

[Explanation of symbols]

 1 Film 2 Bar Code Detector 3 Bar Code Detector 4 Storage Means 5 Storage Means 6 Logical Operation Means 7 Selection Means

Claims (1)

[Claims] 1. A bar code recorded on one side or both sides of a negative film is detected by a plurality of bar code detecting means in order to match an order with an image frame prior to printing exposure from the negative film to printing paper. Then, in the film bar code detecting device for specifying the image frame, the discriminating means for discriminating the bar code information between the frame number and the DX code, and the two memories for storing the information in one corresponding to the discriminating result by the discriminating means. Means, a logical operation means for correcting and / or estimating the barcode information using the storage means, and a selecting means for selecting one of the barcodes on both sides, and only one type of barcode information is provided. The attached film adopts the bar code information as the frame number, and the film with two kinds of bar code information coexists A method for detecting a film barcode, wherein the barcode information of the selected side is adopted as a frame number.