JPH09224187A - Film image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for displaying an image by surely feeding a film within the range from the 1st frame to the final frame even for a film cartridge, in which information on the number of frames is not recorded, by measuring the number of frames of the film when the frame number information can not be detected from the cartridge. SOLUTION: This device is provided with an information reader 129 for detecting the frame number information of a film 102 from a cartridge 101 and a microcomputer 122 for measuring the number of frames of the film 102 when the frame number information can not be detected by the information reader 129. Then, when the frame number information of the film 102 can be detected from the cartridge 101, corresponding to the detected number of frames, the film 102 is fed from the 1st frame to the final frame and the film image is displayed. When the frame number information of the film 102 can not be detected from the cartridge 101, on the other hand, the number of frames of the film 102 is measured, corresponding to the measured number of frames, the film 102 is fed from the 1st frame to the final frame, and the film image is displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film image display apparatus for displaying an image taken on a photographic film on a video monitor.

[0002]

2. Description of the Related Art A film image display device for displaying an image of a developed film stored in a cartridge on a video monitor is known (for example, see Japanese Patent Laid-Open No. 5-75922). In addition, a data disk that rotates in conjunction with the cartridge spool is provided on the film cartridge,
A film cartridge is known in which the number of frames of a film is recorded (for example, JP-A-4-273240).
Reference).

[0003]

By the way, when displaying a film image, frame number information is obtained from the cartridge, and the film is fed from the first frame to the last frame based on the frame number information. However, for a cartridge in which frame number information is not recorded, the last frame cannot be discriminated, so the film is fed beyond the last frame, and the part where the image is not recorded appears. There's a problem.

An object of the present invention is to provide a film image display device which reliably feeds a film within the range from the first frame to the last frame and displays an image even in a film cartridge in which frame number information is not recorded. Especially.

[0005]

[Means for Solving the Problems]

(1) The invention of claim 1 is applied to an apparatus for displaying an image of a developed film stored in a cartridge, and a frame number information detecting means for detecting frame number information of the film from the cartridge, and this frame number information detection. And a frame number measuring means for measuring the frame number of the film when the frame number information cannot be detected by the means. When the number-of-frames information of the film can be detected from the cartridge, the first frame to the last frame of the film are fed according to the number of detected frames, and the film image is displayed. on the other hand,
When the number of film frames cannot be detected from the cartridge, the number of film frames is measured, and the first frame to the last frame of the film are fed according to the measured number of frames to display a film image. (2) The frame number measuring means of the film image display apparatus according to claim 2 detects the perforation of the film by the perforation detecting means while feeding the film to the end by the film feeding means, and detects the number of frames based on the perforation detection result. To measure. (3) The film image display device according to a third aspect comprises magnetic information reading means for reading the magnetic recording information recorded on each frame of the film when the frame number is measured by the frame number measuring means. (4) The film image display device according to claim 4 has a non-volatile memory for storing the measurement result by the frame number measuring means.

[0006]

FIG. 1 shows the configuration of an embodiment.
The cartridge 101 and the film 102 are disclosed in
No. 273240, Japanese Patent Application Laid-Open No. 3-75741, and Japanese Patent Application Laid-Open No. 6-82970, the film 102 is completely housed in the cartridge 101 when not in use, and the film 102 is used during use. It is a drop-in loading type film cartridge that is sent out from the. The cartridge 101 is provided with a data disk (not shown) that rotates in conjunction with the spool, records the number of frames and film type of the film 102 to be stored by a bar code, and unexposes and exposes depending on the stop position of the data disk. Displays the usage status such as developed. The bar code recorded on the data disc is read by the information reading device 129.

The film 102 is fed by the spool 103 and the motor 104 of the film image display device and the spool and the motor 105 of the cartridge 101. The motor 104 drives the spool 103 to wind the film 102, and the motor 105 drives the spool of the cartridge 101 to drive the film 10.
Send and rewind 2.

The switch 106 is provided in the cartridge housing portion and detects the presence or absence of the cartridge 101. The magnetic head 107 reads various data magnetically recorded on the film 102 and magnetically records various data on the film 102. Film encoder 108
Rotates in conjunction with the movement of the film, and measures the feeding speed and feeding amount of the film 102. Interrupter 109,1
10 detects the perforation of the film 102.

The illumination light source 111 illuminates the film 102. The diffusion plate 112 makes the light emitted from the illumination light source 111 white and diffuses it, and also serves as a pressure plate for the film 102. The imaging lens 113 forms an image of the image area 126 of the film 102 on the CCD camera 114, and the CCD camera 114 reads the image of the image area 126 and converts it into an electric signal.

The image pickup circuit 115 converts the image signal from the CCD camera 114 into a video signal. Video control circuit 1
16 processes the video signal from the image pickup circuit 115 to generate a desired image. The video control circuit 116 further has a superimpose function. A video monitor (not shown) is connected to the video output terminal 125 to display the generated image of the film 102.

An AF / zoom control circuit 117 moves the image pickup lens 113 for focus adjustment and zooming, and controls the rotation and movement of the CCD camera 114 in the X and Y directions. The motor control circuit 118 controls the drive of the hoisting motor 104 and the rewinding motor 105. Further, the illumination control circuit 119 controls the turning on / off of the illumination light source 111.

The magnetic reading circuit 120 is the magnetic head 10.
7, the signal read from the film 102 is amplified and decoded, and the magnetic writing circuit 121 writes the data on the film 102 by the magnetic head 107. The microcomputer 122 controls the above-mentioned devices to control the operation of the film image display device such as film feeding and video reproduction.

The key group 123 is an operation member for the user to instruct an operation and input information, and includes a switch group for correcting the color of a television image and a film image displayed on the television screen. It has an operation switch for moving up, down, left and right, and a rotation switch for rotating a film image.

The flash memory 124 is the film 10
2 is a memory for storing the magnetic recording information of No. 2, various adjustment information at the time of image display, and the state of the film 102. The flash memory 124 has a storage area configured in block units called pages, and information can be collectively recorded in page units. The stored contents of each page will be described later.

A personal computer 128 is connected to the film image display device through an interface 127, and various adjustment data can be set.

FIG. 2 shows the leader portion of the film 102. On the film 102, two perforations are formed, two perforations Pa and Pb on the left and right of the photographing frame.
In addition, a perforation Pc is specially formed in front of the first piece B1, and a notch 102a is formed at the tip.

FIG. 3 shows the magnetic recording area of the film 102. On the film 102, a magnetic recording area T is provided at a predetermined position of each frame, and data such as shooting date and time and shooting conditions for each frame can be recorded.

FIG. 4 is a detailed circuit diagram of the interrupters 109 and 110. Note that the interrupters 109 and 110 are the same, and the description will focus on the interrupter 109. The LED 109a (110a) irradiates the film 102 with light, and the phototransistor 109c (110c) receives light. Phototransistor 109c (110
c) outputs a current according to the received light intensity, and the resistor 1
At 09d (110d), the voltage V is converted and output. That is, when the film 102 is not present at the detection position of the interrupter 109 (110) or when there is perforation, the light intensity received by the phototransistor 109c (110c) becomes large and the output voltage V becomes high. on the other hand,
The film 1 is placed at the detection position of the interrupter 109 (110).
02, the phototransistor 109c (110
The intensity of the light received in c) decreases, and the output voltage V decreases.

D / A converter 109e (110e)
Converts the threshold voltage Vth output from the microcomputer 122 into an analog voltage and outputs the analog voltage to the comparator 109f (110f). This threshold voltage Vth is a threshold value for determining the presence or absence of the film 102, and is set by the personal computer 128.

The comparator 109f (110f) compares the output voltage V of the phototransistor 109c (110c) with the threshold voltage Vth, outputs a Hi level signal when the output voltage V is lower than the threshold voltage Vth, and outputs the output voltage V. When it is higher than the threshold voltage Vth, the Lo level signal is output. Microcomputer 1
22 is an interrupter 109 (110) when it receives a Hi level signal from the comparator 109f (110f).
When the Lo level signal is received, it is determined that the film 102 is not present at the detection position of the interrupter 109 (110) or that the perforations Pa, Pb, Pc are present.

FIG. 5 shows the stored contents of each page of the flash memory 124. The magnetic recording data of the film 102 is sequentially assigned to each page / frame from the first frame. That is, the information on the nth frame (n = 1 to the last frame) is the nth frame.
Remembered on page. As shown in the figure, the information of each frame stored in each page includes a frame number, a shooting date, and the like.
Further, the (n + 1) th page includes the interrupter 10 described above.
Adjustment data such as the threshold voltage Vth of 9,110 is recorded. Further, in the (n + 2) page, the frame number set in the image area 126, the presence or absence of data change indicating whether or not the photographing date information has been rewritten,
The state data such as the film type indicating the reversal film or the negative film and the number of film frames are recorded.

6 to 8 show a microcomputer 12
It is a flow chart which shows image display processing of No. 2. The operation of the embodiment will be described with reference to these flowcharts.
When the device is turned on, the microcomputer 12
2 starts processing from step 1, and flash memory 1
The stored contents of 24 are reset and the peripheral circuits are reset. In step 2, it is confirmed whether the personal computer 128 is connected via the interface 127, and if it is connected, the process proceeds to step 3,
If not connected, go to step 6.

In steps 3 to 5, communication is performed with the personal computer 128 and the communication content is stored in the flash memory 124. Communication with the personal computer 128 is performed during the manufacturing process of the film image display device. The information set by the personal computer 128 includes adjustment data such as threshold voltages Vth of the interrupters 109 and 110, and these adjustment data are stored in the (n + 2) page of the flash memory 124.

Next, in step 6, adjustment data of (n + 1) pages and (n +) pages from the flash memory 124 are stored.
2) Read the status data of the page and continue Step 7
Then set the read adjustment data to the device. The threshold 1 of the adjustment data is set to the D / A converter 109.
Set to e and set threshold 2 to D / A converter 1
Set to 10e. Other adjustments 1 and 2 data are also set in the corresponding device.

In step 8, the presence or absence of the film is confirmed based on the read state data. As will be described later, the state data of the (n + 2) page of the flash memory 124 is reset when the film is rewound. Therefore, if the status data is reset, it is determined that there is no film, and if the status data is not reset, it is determined that there is a film. If there is a film, step 35
If there is no film, proceed to step 9.

When there is no film, the cartridge loading detection switch 106 is pressed in the cartridge 1 in step 9.
When the cartridge 101 is loaded, the process proceeds to step 10. In step 10, the information reading device 129 reads the bar code information recorded on the data disk of the cartridge 101. The bar code information includes the number of frames of the film 102 and the film type.

In step 11, the information reading device 129
It is confirmed whether the bar code information recorded on the data disk of the cartridge 101 has been read by, and if the bar code information is read, the process proceeds to step 12, and if not, step 12 is skipped. Step 12
Then, the number of frames of the read film 102 is stored in the (n + 2) page of the flash memory 124. Further, in step 13, the film counter for measuring the number of frames of the film 102 is reset to 0. The film counter is a software counter provided in the RAM of the microcomputer 122.

In step 14, the motor control circuit 118 drives the motor 105 to start the thrust of the film 102, and in the following step 15, the film encoder 1
It is determined whether or not the thrust is completed based on the measurement result of the film feeding amount according to 08. When the film 102 is pushed out to the spool 103, the motor 105 is stopped in step 16 to end the thrust. Then, in step 17, the counter indicating the page of the flash memory 124 is set to 1. This page counter is a software counter provided in the RAM of the microcomputer 122.

In step 18, the motor control circuit 118 is controlled to drive the motor 104, and the spool 103 starts winding the film 102. Step 19
Then, reset the timer that monitors the time required to wind one frame and restart. This timer is set to a time slightly longer than the winding time of one frame of film 102. If the timer times out before the winding of one frame is completed, it is determined that the film is abnormally wound and necessary processing is performed. To do.

In step 20, the interrupter 10
At 9, it is confirmed whether the perforation of the film 102 is detected. In the interrupter 109, the perforation Pc is first detected and then the perforation Pa is detected as shown in FIG. Interrupter 1
Since 09 is arranged on the side of the cartridge 101 in the image area 126, when the perforation Pc (Pb after the second frame) is detected by the interrupter 109, the magnetic head 107 is immediately moved to the photographing frame and the magnetic recording area T thereof. pass. Therefore, in step 21, the magnetic read circuit 120 drives the magnetic head 107 to start reading the magnetic recording data recorded in the magnetic recording area T.

In step 22, the interrupter 11
At 0, it is confirmed whether two perforations are detected. Since the interrupter 110 is arranged on the winding spool 103 side of the image area 126,
Also, as shown in FIG. 3, the interrupter 110 has two perforations Pc and Pa (Pb and P for the second and subsequent frames).
At the time when a) is detected, the image frame is displayed in the image area 12
6 and the magnetic recording area T of the photographing frame passes through the magnetic head 107. Therefore, when two perforations are detected by the interrupter 110, the magnetic recording data read in step 23 is stored in the flash memory 124. Since the above-mentioned page counter holds the same value as the number of the frame which is currently facing the image area 126, the read magnetic recording data is recorded on the page indicated by the page counter.

Since the film 102 has been wound up one frame, the film counter and the page counter are incremented in steps 24 and 25. In step 26, it is confirmed whether or not the last frame has been wound. Steps 10 to 10 above
When the number of film frames is read from the cartridge 101 at 12, the frame is (n +
2) It is stored in the page, and this stored value is compared with the current value of the film counter to judge whether or not it is the last frame.
However, if the number of film frames has not been read in steps 10 to 12, the number of frames in the flash memory 124 remains reset to 0 when the film is rewound, and therefore the stored value 0 and the current value of the film counter are There is no match even if the two are compared, and in this case it is always judged that it is not the final piece.

If it is determined that it is not the final frame, step 1
Returning to No. 9, one frame is wound up by the procedure described above, the magnetic recording data is read, the number of frames is measured by the film counter, and the number of pages is updated by the page counter.

In step 22, the interrupter 110
When two perforations are not detected in step S27, the process proceeds to step 27, and it is confirmed whether or not the timer for monitoring the one frame winding time is up. If the perforation is not detected even after the predetermined winding time set in the timer, it is judged that the film 102 has been wound up to the last frame, and in step 28, the current value of the film counter is flashed as the number of frames of the film 102. The data is recorded in the (n + 2) page of the memory 124.

When it is determined in step 26 that the frame is the last frame, the process proceeds to step 29, in which the motor 104 is stopped and the winding of the film 102 is stopped. Then step 3
At 0, the motor 105 is driven to start rewinding the film 102. In step 31, it is confirmed whether the first frame reaches the image area 126 based on the perforation detection result of the interrupter 110. When the first frame is rewound to the image area 126, the process proceeds to step 32, and the film 102 is wound. Stop rewinding. And
In step 33, 1 is recorded in the frame number at the image pickup position of the (n + 2) page of the flash memory 124, and in step 34, 1 is set in the page counter.

In step 35, the lighting control circuit 11
9, the illumination light source 111 is turned on, and the film 102 is illuminated from the back surface via the diffusion plate 112. In the following step 36, the CCD 114 and the image pickup circuit 115 pick up an image of the frame in the image area 126. At this time, based on the film type information of the cartridge 101 read in step 10, in the case of a negative film, the video control circuit 116 processes the video signal to invert the negative image into a positive image.

In step 37, the flash memory 124
The piece data is read from the page indicated by the page counter of. This frame data is the magnetic recording data of the frame currently being imaged. In step 38, the image control circuit 116 sets masks at the top and bottom of the screen to compensate for the difference in aspect ratio between the television image and the film image. In other words, if the image as it is captured is broadcast, even the perforation portion outside the photographing screen is projected, so such unnecessary portions are cut. In step 39, the character data in the read magnetic recording data is superposed and displayed by the video control circuit 116.

In step 40, the operation of the hoisting switch in the key group 123 is confirmed, and when the hoisting switch is not operated, the operation of the rewinding switch is confirmed in step 42. When the winding switch is operated, the process proceeds to step 41, and it is confirmed whether it is the last frame. If it is not the last frame, the process proceeds to step 49, where the frame number of the image pickup position of the (n + 2) page of the flash memory 124 is incremented and the page counter is incremented.
Then, the winding of the film 102 is started in step 50, and the perforation is detected by the interrupter 110 in the following step 51. 2 with interrupter 110
When the individual perforations Pb and Pa are detected, the process proceeds to step 52, and the winding of one frame is completed and the next frame is wound up to the image area 126. Therefore, the winding is stopped. After that, the process proceeds to step 36, and the image pickup process is performed as described above.

If the final frame has already been reached when the winding switch is operated, or if the rewind switch is operated, the illumination light source 111 is turned off in step 43, and the image pickup circuit 115 is turned off in step 44. .
Then, rewinding is started in step 45, and step 4
When the rewinding is completed in step 6, the rewinding is stopped in step 47. When the rewinding of the film 102 into the cartridge 101 is completed, in step 48, the flash memory 1
Reset the state data of page 24 (n + 2).

In the configuration of the above embodiment of the invention,
The information reading device 129 is a frame number information detecting means, the microcomputer 122 is a frame number measuring means, the motor control circuit 118 and the motor 104 are film feeding means, and the magnetic head 107 and the magnetic reading circuit 120 are magnetic information reading means. , And the interrupters 109 and 110 respectively constitute perforation detection means.

[0041]

As described above, according to the first aspect of the invention, when the frame number information cannot be detected from the cartridge, the frame number of the film is measured, so that the frame number information is recorded. No film cartridge, no 1
It is possible to reliably feed the film within the range from the frame to the final frame and display the image. According to the invention of claim 2, the perforation of the film is detected while feeding the film to the end, and the number of frames is measured based on the perforation detection result. Therefore, the number of frames of the film can be accurately detected. You can According to the invention of claim 3, since the magnetic recording information recorded in each frame of the film is read at the time of measuring the number of frames, it is not necessary to read the magnetic recording information of each frame again. According to the invention of claim 4, since the number of frames of the measurement result is stored in the non-volatile memory, the number-of-frames information can be held even when the power of the apparatus is shut off.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an embodiment.

FIG. 2 is a diagram showing a leader portion of a film.

FIG. 3 is a diagram showing a film frame and a magnetic recording area.

FIG. 4 is a detailed circuit diagram of an interrupter.

FIG. 5 is a diagram showing recorded contents for each page of a flash memory.

FIG. 6 is a flowchart showing image display processing.

FIG. 7 is a flowchart showing image display processing continued from FIG. 6;

FIG. 8 is a flowchart showing an image display process following FIG. 7.

[Explanation of symbols]

 101 cartridge 102 film 103 spool 104, 105 motor 106 switch 107 magnetic head 108 film encoder 109, 110 interrupter 111 illumination light source 112 diffuser plate 113 imaging lens 114 CCD 115 imaging circuit 116 image control circuit 117 AF / zoom control circuit 118 motor control circuit 119 Lighting control circuit 120 Magnetic reading circuit 121 Magnetic writing circuit 122 Microcomputer 123 Key group 124 Flash memory 125 Video output terminal 126 Image area 127 Interface 128 Personal computer 129 Information reading device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Okutsu Nikon Corporation, 2-3-2 Marunouchi, Chiyoda-ku, Tokyo

Claims (4)

[Claims] 1. An apparatus for displaying an image of a developed film stored in a cartridge, wherein frame number information detecting means for detecting film frame number information from the cartridge, and frame number information detecting means for detecting the frame number information. A film image display device, comprising: a frame number measuring means for measuring the number of frames of the film if the film image cannot be produced. 2. The film image display device according to claim 1, wherein the frame number measuring means detects the perforation of the film by the perforation detecting means while feeding the film to the end by the film feeding means, and detects the perforation. A film image display device characterized in that the number of frames is measured based on the result. 3. The film image display device according to claim 2, further comprising magnetic information reading means for reading magnetic recording information recorded on each frame of the film when the frame number is measured by the frame number measuring means. Film image display device. 4. The film image display device according to claim 1, further comprising a non-volatile memory for storing a measurement result of the frame number measuring means.