JP3605936B2 - Film scanner - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a film scanner, and more particularly, to a film scanner for reading a frame image recorded on a photographic film.
[0002]
[Prior art]
Conventionally, a photographic film of a new standard as shown in FIG. 8 (hereinafter referred to as an APS (Advanced photo system) film) has been proposed. The film 14 is provided with perforations 14A and 14B indicating the frame positions, and a magnetic recording layer is formed on the entire surface of the film or on the edge of the film. One perforation 14A, 14B is formed at each of the leading and trailing ends of the recording area of each frame image, and serves as a reference indicating the recording area of each frame image. One perforation is formed at the head of the film. That is, a pair of perforations 14A and 14B are formed at predetermined intervals from the top. Hereinafter, the perforation 14B on the leading side of the film in each frame image area is referred to as M (Metering) perforation 14B, and the perforation 14A on the trailing end side is referred to as A (Antitipathon) perforation 14A. A perforation 14A).
[0003]
The magnetic recording layer at the edge of the photographic film is used as a magnetic track 14C for recording magnetic information. The magnetic track 14C includes a camera having a magnetic head, a photographing condition for each frame, a print format indicating a non-aspect such as a high-definition image, a panoramic image, and a normal image, a photographing date and time, the top and bottom of the image to be imprinted, a subject distance, Magnetic information indicating the position of the main subject in one screen is recorded.
[0004]
Optical information is recorded on the magnetic track 14C so as to overlap with the magnetic information. For example, before shipment of the film cartridge, information indicating the film ID number, the number of frames, the type of film, the frame number, etc. is recorded as a barcode. Also, at the time of photographing, the print format and photographing conditions are set at positions that do not overlap with the barcode. And the like are exposed and recorded in a predetermined recording format by a light source built in the camera.
[0005]
As a form of returning such an APS film from a laboratory (developing laboratory), it has been proposed to store one roll of developed film in a film cartridge and return it. Also, related devices (cameras, film scanners, etc.) compatible with APS films have been proposed.
On the other hand, a lens-equipped film unit having a lens attached to a 35 mm-size film “Sharp Run Hi” (trade name) has been known. Such a film unit with a lens (hereinafter abbreviated as LF) is known. It has also been proposed to use a photographic film compatible with APS-related equipment. This photographic film (hereinafter referred to as an LF APS film) is shown in FIG. 9 in correspondence with the above-mentioned general APS film (FIG. 9 (A) shows a general APS film, and FIG. 9 (B) shows , APS film for LF). Note that the same reference numerals are given to the corresponding components in the general APS film and the LF APS film.
[0006]
As shown in the drawing, a general APS film and an APS film for LF have a pair of A perforations 14A and M perforations 14B perforated at predetermined intervals, and have basically the same configuration. In the APS film for use, one more perforation (M-perforation 14B) is perforated at the end of the film than a general APS film.
[0007]
Also, as can be seen from the figure showing the perforation standards of the general APS film of FIG. 10A and the APS film for LF of FIG. 10B, the width of the A perforation 14A of the APS film for LF is: It is perforated 1 mm wider at the rear end of the film than the A-perforation 14A of a general APS film. For this reason, the edge position on the film front side of the A perforation 14A of the LF APS film matches the general APS film, but the edge position on the film rear end side does not match.
[0008]
By the way, these APS films are reproduced by a film player corresponding to the APS film. At this time, the area where each frame image is recorded is specified by the positions of the A perforations 14A and the M perforations 14B corresponding to each frame, whereby the frame image of the predetermined area is accurately read.
[0009]
For example, when the film is sequentially pulled out from the leading end side and the film is transported (hereinafter, this transporting direction is referred to as a forward direction) and a frame image is captured by a line sensor, the edge of the M-perforation 14B on the leading end side of the film (firstly, The detection of an edge to be detected is used as a synchronization signal, and after the film is conveyed by a predetermined amount from the position where the synchronization signal is input, image capture is started, and the film is conveyed by a predetermined amount from the position where image capture started. (From the edge on the rear end side of the film of the A-perforation 14A to a position a predetermined distance before). FIGS. 4A and 4B show examples of image capture ranges (image capture ranges) of a general APS film and an LF APS film when such image reading control is performed. As shown in these figures, the image capture ranges of the general APS film and the APS film for LF are located at an equal distance from the edge position of the film leading side of the A perforation 14A, and the positions of the image capture ranges of both films are as follows. Matches.
[0010]
[Problems to be solved by the invention]
However, when reading a frame image, it may be more advantageous to capture the frame image by transporting the film in the rewinding direction (hereinafter, this direction is referred to as the reverse direction) than transporting the film in the forward direction. For example, when reading a frame image after transporting the film in the forward direction and then trying to read the frame image again, the film may be read more than once rewinding to the top of the frame image and then reading the image. When the image is read while rewinding, it is not necessary to carry out an extra film transport operation, which is a comfortable operation.
[0011]
When reading an image while transporting the film in the reverse direction in this way, if this reading control is to be performed in the same manner as when reading an image while transporting the film in the forward direction as described above, the image is read. The start of reading is based on the edge position on the rear end side of the film of the A perforation 14A. However, as described above, the edge position of the A-perforation 14A of the APS film for LF on the rear end side of the film is located on the rear-end side of the edge of the A-perforation 14A of the general APS film. For this reason, as shown in FIG. 11 (FIG. 11A shows a case of a general APS film, and FIG. 11B shows a case of an APS film for LF), a general APS film and an LF film. The image capture range differs in the case of the APS film. That is, when the control is performed so that the image capture range is the same between the case where the film is transported in the forward direction and the case where the film is transported in the reverse direction in the general APS film, the LF is controlled by exactly the same control as the general APS film. When an image is read from an APS film, the image capturing range is different between the case of transporting the film in the forward direction and the case of transporting the film in the reverse direction.
[0012]
The present invention has been made in view of such circumstances, and when reading a film image by transporting the film in the forward or reverse direction, the image capture range of the general APS film and the APS film for LF is reduced. An object of the present invention is to provide a film scanner that controls reading of an image so as to match.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a first method in which perforations are provided at the leading and trailing ends of an area for recording each frame image and one perforation is provided before the perforation at the leading end of the first frame. Perforations having different widths are provided at the leading and trailing ends of the photographic film and the area where each frame image is recorded, and one perforation is provided before the leading edge of the first frame and after the trailing edge of the last frame. A film scanner for reading frame images of two types of photographic films including a second photographic film provided with a second photographic film, wherein when the photographic film is fed in the forward direction and the frame images are read, a perforation edge at the tip end is used. A frame image is read from a predetermined reading start position based on When the frame image is fed in the reverse direction and the frame image is read, in a film scanner that reads the frame image from a predetermined reading start position based on the edge of the perforation at the rear end, the total number of perforations provided on the photographic film And a film discriminating means for discriminating between the first photo film and the second photo film by counting the first photo film and the second photo film, and the photo film is turned in the opposite direction. When the frame image is read by feeding the image, the predetermined reading start position based on the edge of the perforation at the rear end is set to a position offset by a difference between the width of the perforation at the front end and the rear end. Correction means.
[0014]
Further, in order to achieve the above object, in the film scanner, the first photo film or the second photo film is determined based on a difference in a width of a perforation between a front end and a rear end provided on the photo film. When the film is judged to be the second photographic film by the film deciding means, and the photographic film is fed in the reverse direction and the frame image is read, the edge of the perforation at the rear end is detected. Reading start position correcting means for setting the predetermined reading start position as a reference to a position offset by the difference between the width of the perforation at the leading end and the trailing end.
[0015]
According to the present invention, whether the photographic film loaded in the film scanner is the first photographic film or the second photographic film is counted by counting the total number of perforations provided on the photographic film by the film discriminating means or Judgment is made based on the difference between the widths of the perforations at the leading and trailing ends provided on the photo film, the photo film is discriminated as the second photo film, and the photo film is fed in the reverse direction to convert the frame image. When reading, the reading start position correcting means sets the predetermined reading start position with respect to the edge of the perforation at the rear end to a position offset by the difference between the width of the perforations at the front end and the rear end.
[0016]
Accordingly, when the first photographic film or the second photographic film is fed in the reverse direction and the frame image is read, the same as the image reading control when the photographic film is fed in the forward direction and the frame image is read. By controlling, the image capturing ranges of the first photo film and the second photo film can be matched.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of a film scanner according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a configuration diagram showing an embodiment of a film scanner according to the present invention. This film scanner mainly includes a light source (fluorescent tube) 64 for illumination, a CCD line sensor 52, an image signal processing device 54, an optical information reading device 56, a perforation detecting device 58, a magnetic information recording / reproducing device 60, a film transport control device 62. Etc. are provided. This film scanner reproduces film images of a general APS film and an APS film for LF.
[0018]
As shown in the drawing, an image signal illuminated by a light source 64 from a CCD line sensor 52 and transmitted through an infrared cut filter (not shown) and a film 14 through a lens (not shown) is captured, converted into an electric signal, and converted into an electric signal. Input to 54. The image signal processing device 54 performs various kinds of signal processing such as white balance adjustment and γ correction on the signal input from the CCD line sensor 52 to generate a video signal, and outputs the video signal to a display device such as a monitor TV (not shown). Output.
[0019]
The optical information detecting device 56 includes an optical sensor 56A, and a bar code indicating the ID number of the film cartridge 10 and a fat bit (FAT BIT) indicating a print format (C, H, P size) via the optical sensor 56A. Read optical information such as
The perforation detecting device 58 includes a perforation sensor 58A and a perforation sensor 58B, and detects the perforations 14A and 14B formed in the film 14. The perforation sensor 58A detects the position of each frame image area by detecting the perforations 14A and 14B, while the perforation sensor 58B detects the position of the magnetic track 14C corresponding to each frame by detecting the perforations 14A and 14B. Is detected.
[0020]
The magnetic information recording / reproducing apparatus 60 includes a reproducing head 60A and a recording head 60B, reads magnetic information recorded on a magnetic track 14C of the film 14 via the reproducing head 60A, and reads magnetic information via a recording head 60B. Magnetic information is written to the track 14B.
The film transport control device 62 includes a film drive device such as a capstan roller 62A, a take-up shaft 62B, and a spool shaft (a shaft that fits with the spool 12 and rotates the spool), and the rotation amount of the capstan roller 62A is pulsed. The film is detected by a generator or the like, and the transport distance and transport speed of the film are controlled.
[0021]
The control unit 50 outputs a control signal to the above various devices to control the operation of each device. The details will be described later.
FIG. 2 is a diagram showing the arrangement of each sensor installed on the film transport path of the film scanner.
As shown in the figure, the CCD line sensor 52, the perforation sensor 58A, and the optical sensor 56A are arranged on the same line, and the perforation sensor 58B is arranged on the same line as the recording head 60B of the adjacent reproducing head 60A and recording head 60B. Be placed.
[0022]
Next, the image reading control of the control unit 50 will be described. First, a case where a film image is read while transporting the film in the forward direction will be described.
When the film is transported in the forward direction, a detection signal indicating the detection of the A perforations 14A and the M perforations 14B is input from the perforation detection device 58 to the control unit 50 as shown in FIGS. FIG. 3A shows a case of a general APS film, and FIG. 3B shows a case of an APS film for LF.
[0023]
The controller 50 detects the falling edge of the pulse of the M-perforation sensor 14B from the detection signal, and when the falling edge is detected, detects the film transport distance from this point in time from the film transport controller 62. When it is detected that the film has been transported by a predetermined transport amount (image reading start delay amount), the CCD line sensor 52 starts reading an image. When it is detected that the film has been conveyed to a predetermined image reading amount (from the start of image reading to the edge position on the rear end side of the film of the A perforation 14A to the position where the image reading start delay amount is reached), the image reading is performed. To stop.
[0024]
As a result, in the case of a general APS film, an image in an area (image capturing range) indicated by hatching in FIG. 4A is captured, and in the case of an APS film for LF, the image is indicated by hatching in FIG. The image of the area (image capture range) is captured.
Next, the control procedure of the control unit 50 when reading a film image while transporting the film in the reverse direction will be described.
[0025]
As an example of reading a film image while transporting the film in the reverse direction, there is a pre-scan performed to display an index image on a monitor screen. The procedure of the pre-scan will be described with reference to the flowchart of FIG.
When the film cartridge 10 is inserted into the film scanner (step S8), first, the film 14 is loaded (step S10), and the film 14 is conveyed at high speed from the beginning to the rear end of the film 14 and recorded on the magnetic track 14C. The magnetic information and the optical information are read by the magnetic information recording / reproducing device 60 and the optical information reading device 56.
[0026]
Next, the film image is read by the image signal processing device 54 via the CCD line sensor 52 while the film 14 is conveyed from the rear end to the first frame at a medium speed, and the index image (a plurality of simple frame images is displayed on one screen). The index image is displayed on the monitor screen (step S14). When the reading of the film image is completed up to the first frame, the transport of the film is stopped (step S16), and a main scan command is waited for (step S18).
[0027]
As described above, when the film cartridge is inserted, the film scanner performs pre-scanning, conveys the film in the reverse direction, and reads the film image. The following processing is performed so that the image can be taken in an appropriate image capturing range regardless of whether the film is a general APS film or an APS film for LF.
[0028]
First, in step S12, when the film 14 is transported at a high speed from the top to the rear end, the control unit 50 determines the type of the photographic film. That is, it is determined whether it is a general APS film or an APS film for LF.
As a first method for determining the type of a photo film, the type can be determined by the number of perforations from the beginning to the end of the film. The control unit 50 counts the number of the A perforations 14A and the M perforations 14B detected by the perforation detection device 58 via the perforation sensor 58A, and the total number of the A perforations 14A and the M perforations 14B from the beginning to the end of the film is an odd number. Or even number. If the total number of the A-perforations 14A and the M-perforations 14B is odd, the type of the photo film is determined to be a general APS film, and if the total number is even, the type of the loaded photo film is determined to be the APS film for LF. I do.
[0029]
As a second method for determining the type of the photo film, the type can be determined based on the width of the A perforation 14A. A detection signal indicating the detection of the perforations 58A and 58B is input to the control unit 50 from the perforation detecting device 58 via the perforation sensor 58A. As described above, in the case of a general APS film, a detection signal as shown in FIG. 3A is input, and in the case of an LF APS film, a detection signal as shown in FIG. 3B is input. As shown in FIGS. 3A and 4B, the pulse width when the A perforation 58A is detected differs between the case of the general APS film and the case of the LF APS film. Measures the pulse width of the A perforation 58A. If the pulse width is a value (2 mm) corresponding to the A perforation 58A of a general APS film, it is determined to be a general APS film, and the pulse width of the APS film for LF is determined. In the case of a value (3 mm) corresponding to the A perforation 58A, it is determined that the APS film is for LF.
[0030]
In the case of a general APS film, the widths of the A perforations 14A and the M perforations 14B are equal, and in the case of the LF APS film, the widths of the A perforations 14A and the M perforations 14B are different. It is also possible to detect the width of 14B and compare these widths to determine the type of photographic film.
[0031]
The type of the photographic film is determined as described above, and the following control is performed when the film image is captured while transporting the film in the reverse direction in step S14 as described above from the result. When the film is being transported in the reverse direction in step S14, a detection signal as shown in FIG. 6 is detected from the perforation detection device 58 (FIG. 6A shows a case of a general APS film, FIG. 6B shows the case of an APS film for LF).
[0032]
If it is determined in step S12 that the type of the photo film is a general APS film, the control unit 50 detects the falling edge of the pulse indicating the A-perforation 14A, and detects the falling distance of the film from the point of detecting the falling edge. Is detected from the film transport control device 62. Then, the image reading is started by the CCD line sensor 52 from the time when it is detected that the film has been conveyed by the image reading start delay amount. The image reading is stopped when it is detected that the film has been transported by the image reading amount. This control procedure is the same as the procedure for reading the film image by transporting the film in the forward direction as described above.
[0033]
On the other hand, if it is determined in step S12 that the type of the photo film is the APS film for LF, the control unit 50 detects the falling edge of the pulse indicating the A-perforation 14A, and detects the falling edge of the film. Is detected from the film transport control device 62. Then, the image reading is started by the CCD line sensor 52 from the point in time when it is detected that the film has been transported by an amount obtained by adding 1 mm to the image reading start delay amount. The image reading is stopped when it is detected that the film has been transported by the image reading amount. That is, when detecting the trailing edge of the pulse indicating the A-perforation 14A, the control unit 50 delays the start of image reading by the CCD line sensor 52 by the width (1 mm) of the A-perforation 14A wider than that of a general APS film.
[0034]
FIG. 7 shows an image capture range in the LF APS film read by this control. As shown in FIG. 11 and FIG. 11B, the image capturing range is the same between the case where the image is read by transporting the film in the forward direction and the case where the image is read by transporting the film in the reverse direction. I do.
In the above-described embodiment, a case will be described in which, in a general APS film, the image capture range is a range inward from the outer edge positions of the A perforations 14A and M perforations 14B of each frame by an image reading start delay amount. However, the present invention is not limited to this. When the film is conveyed in the reverse direction and the film image is read when the image capturing range is arbitrary in a general APS film, the image reading start position of the LF APS film is set. The delay may be delayed by an amount (1 mm) of the width of the A perforation 14A which is wider than that of a general APS film.
[0035]
Further, in the above-described embodiment, the reading control of the frame image has been described. However, the same control can be applied to the reading control of the magnetic information and the optical information.
[0036]
【The invention's effect】
As described above, according to the film scanner of the present invention, when reading the frame image by feeding the second photographic film in the reverse direction, the reading start position with reference to the perforation edge at the rear end is Since the position is offset by the difference between the width of the perforations at the leading edge and the trailing edge, the first photo film can be easily connected to the first photo film by the same control as that for feeding the photo film in the forward direction and reading the frame image. The image capturing range of the second photographic film can be matched.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an embodiment of a film scanner according to the present invention.
FIG. 2 is a diagram illustrating an arrangement of sensors installed on a film transport path of the film scanner.
FIG. 3 is a diagram illustrating detection signals of A-perforation and M-perforation detected when a general APS film and an APS film for LF are transported in a forward direction.
FIG. 4 is a diagram illustrating an image capturing range when an ordinary APS film and an APS film for LF are transported in the forward direction and an image is read.
FIG. 5 is a flowchart showing a procedure of a pre-scan in the film player.
FIG. 6 is a diagram showing detection signals of A-perforation and M-perforation which are detected when a general APS film and an APS film for LF are conveyed in opposite directions.
FIG. 7 is a diagram showing an image capture range when an APS film for LF is transported in the reverse direction in the film scanner according to the present invention.
FIG. 8 is a diagram showing an APS film.
FIG. 9 is a diagram showing a general APS film and an APS film for LF.
FIG. 10 is a diagram showing a standard of perforation of a general APS film and an APS film for LF.
FIG. 11 is a diagram showing an image capture range when a general APS film and an APS film for LF are transported in the reverse direction and an image is read under the same control.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Film cartridge 14 ... Film 14A ... A perforation 14B ... M perforation 52 ... CCD line sensor 54 ... Image signal processing device 56 ... Optical information reading device 58 ... Perforation detection device 60 ... Magnetic information recording / reproducing device 62 ... Film transport control device

Claims (2)

A first photographic film in which perforations are provided at the front and rear ends of an area for recording each frame image and one perforation is provided before the perforation at the front end of the first frame, and an area for recording each frame image And a second photographic film in which perforations having different widths are provided at the front end and the rear end, respectively, and one perforation is provided before the front perforation of the first frame and after the perforation at the rear end of the last frame. A film scanner for reading frame images of two types of photographic films. When a photographic film is fed in a forward direction and a frame image is read, a frame is read from a predetermined reading start position based on a perforation edge at the leading end. Scan the image and feed the photo film in the reverse direction to read the frame image. If that is the film scanner for reading frame images from a predetermined reading start position relative to the perforations in the edge of the rear end,
Film discriminating means for discriminating between the first photo film and the second photo film by counting the total number of perforations provided in the photo film;
When the film discriminating means determines that the photo film is the second photo film, and when the photo film is fed in the reverse direction and the frame image is read, the predetermined photo is determined with reference to the perforation edge at the rear end. Reading start position correction means for setting the reading start position to a position offset by the difference between the widths of the perforations at the front end and the rear end,
A film scanner comprising: A first photographic film in which perforations are provided at the front and rear ends of an area for recording each frame image and one perforation is provided before the perforation at the front end of the first frame, and an area for recording each frame image And a second photographic film in which perforations having different widths are provided at the front end and the rear end, respectively, and one perforation is provided before the front perforation of the first frame and after the perforation at the rear end of the last frame. A film scanner for reading frame images of two types of photographic films. When a photographic film is fed in a forward direction and a frame image is read, a frame is read from a predetermined reading start position based on a perforation edge at the leading end. Scan the image and feed the photo film in the reverse direction to read the frame image. If that is the film scanner for reading frame images from a predetermined reading start position relative to the perforations in the edge of the rear end,
Film discriminating means for discriminating between the first photo film and the second photo film based on a difference in perforation width between a front end and a rear end provided on the photo film;
When the film discriminating means determines that the photo film is the second photo film, and when the photo film is fed in the reverse direction and the frame image is read, the predetermined photo is determined with reference to the perforation edge at the rear end. Reading start position correction means for setting the reading start position to a position offset by the difference between the widths of the perforations at the front end and the rear end,
A film scanner comprising:

Images