JPH11184012A - Image display device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] When a viewer pulls out a film cartridge from an image display device, it is difficult to determine which frame of which film the displayed image is. SOLUTION: An image display device which stores an image projected from a film 2 and has a storage display means 7 such as a spatial light modulator for displaying the stored image corresponds to an image stored in the storage display means. An information storage means for storing information about the film (film identification information and image frame number) is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device for viewing a film image with a spatial light modulator or the like.

[0002]

2. Description of the Related Art Generally, a film photographed by a camera or the like is printed on a photographic paper after development, and is usually viewed as a photograph. However, recently, a film image is electronically read by a film scanner or the like. Devices that can view the electronic image on a television or the like are commercially available. In the same type of device, the stored film image is erased when the power is turned ON / OFF and when the film is changed.

Further, the present applicant has proposed an image display device for viewing a film image taken by a camera or the like with a spatial light modulator. This image display device writes a film image by illuminating a film from behind with a light source such as a xenon tube and projecting the transmitted light to a spatial light modulator through a projection optical system including a projection lens and a reflection mirror. Let it do).

Here, the spatial light modulator is composed of a ferroelectric liquid crystal, a photoelectric conversion film, and the like, and image information written by the memory function of the ferroelectric liquid crystal can be stored for a long time. The operating principle of the spatial light modulator is described in Japanese Patent Application Laid-Open No. 4-299314.

In the image display device proposed by the present applicant, the spatial light modulator on which an image is written is illuminated with backlight from behind using a fluorescent lamp, and the image transmitted using the light transmitted through the spatial light modulator is used. Can be viewed.

In recent years, a new photographic system has been developed, and a film used in the system is stored in a cartridge after development processing. For example, JP-A-8-19
No. 1414 proposes a film scanner corresponding to the cartridge type film.
In this film scanner, the identification information of the film once scanned and various film information are stored in a non-volatile memory, and the scanning of the same film can be omitted to shorten the reproduction time.

[0007]

However, in the conventional image display device, when the viewer pulls out the film cartridge from the image display device, the image displayed on the image display device is determined by which frame of which film. However, there is a disadvantage that the device itself cannot judge or inform the viewer.

In the conventional image display apparatus, the same control is performed when a film cartridge containing a film image stored in the spatial light modulator is reloaded, as when a completely new film cartridge is loaded. I was For this reason, for example, even if the viewer instructs to advance or rewrite the frame image before and after the film image stored in the spatial light modulation element and intends to appreciate (rewrite the stored image), the first Since frame feed and image writing are performed in order from the frame, there is a drawback that it takes time and effort to display a desired frame.

Further, in the conventional image display device, the same control is performed when writing a film image to the spatial light modulator for the first time and when rewriting the film image.
For this reason, even when the viewer tries to write a film image on the spatial light modulator for the first time, the film is not fed to the first frame, and the writing of the film image is not performed smoothly.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned drawbacks, the present invention provides an image display having a storage display means such as a spatial light modulator for storing an image projected from a film and displaying the stored image. In the apparatus, an information storage means for storing information (film identification information and image frame number) relating to the film corresponding to the image stored in the storage display means is provided.

Thus, even when the film cartridge is pulled out from the apparatus, the apparatus itself can determine which film and which frame the image stored or displayed by the storage / display means is, or display it to inform the viewer. Or to be able to do so.

In the case where there is a film feeding means for moving a film frame to a position for projecting an image on the storage display means, the newly detected information is compared with the information stored in the information storage means. It is desirable to provide control means for setting a frame to be moved to the image projection position by the film feeding means.

More specifically, when the identification information of the loaded film matches the identification information of the film stored in the information storage means, the frame corresponding to the frame number stored in the information storage means is displayed at the image projection position. When the frame feed is instructed when the identification information of the loaded film matches the identification information of the film stored in the information storage means, the frame number of the frame number stored in the information storage means is changed. The corresponding frame may be moved to the image projection position later, and the frame corresponding to the frame number stored in the information storage means may be moved to the image projection position when the frame return is instructed.

Thus, for example, when the viewer inserts the film cartridge in order to view the images of the frames before and after the film image stored in the storage and display means, the information storage means automatically stores the frames or images stored in the information storage means. Since the preceding and succeeding frames are set at the image projection position, the image can be rewritten only by performing one frame advance / return or without any advance / return.

When the identification information does not match or when the information storage means does not store the information on the film and the film is loaded, the 0th frame or the 1st frame of the film is set at the image projection position. By moving it, it becomes possible to smoothly write an image using the new film.

Further, when a film is not loaded, a predetermined display may be displayed on the information display means so that a warning display indicating that the film is not loaded may be made to the viewer.

[0017]

FIG. 1 to FIG. 6 show an image display apparatus according to a first embodiment of the present invention. FIG.
1A is an external view of the image display device, FIG. 1B is a rear view of the image display device, FIG. 2 is an explanatory diagram of a layout of the image display device, FIG. 3 is an explanatory diagram of operation switches, and FIG. FIG. 5 is an electric circuit block diagram of the image display device, and FIG. 6 is a flowchart of the operation of the image display device.

The image display device 20 includes a CPU (control means) for controlling the entire image display device,
A spatial light modulator (hereinafter, referred to as an SLM) 1 including a ferroelectric liquid crystal, a photoelectric conversion film, and the like, and an SLM drive circuit 101 that drives and controls the SLM 1 are provided.

Here, the operation principle of the SLM 1 will be briefly described. The SLM 1 has a configuration in which a ferroelectric liquid crystal and a photoelectric conversion film such as an organic photoconductive film are stacked. SLM
When a voltage is applied to the ferroelectric liquid crystal layer and the photoelectric conversion film by the drive circuit 101, a voltage divided by the resistance of the ferroelectric liquid crystal layer and the photoelectric conversion film is applied to each layer.
At this time, the SLM drive circuit 101 applies a voltage to the SLM 1 such that the voltage applied to the ferroelectric liquid crystal layer becomes lower than the threshold voltage at which the ferroelectric liquid crystal molecules are inverted. When the SLM 1 is irradiated with light in this state, electric charges are generated in a region where the light is irradiated on the photoelectric conversion film, and the resistance of the photoelectric conversion film is reduced. As a result, the voltage applied to the ferroelectric liquid crystal layer corresponding to the region where the light is irradiated on the photoelectric conversion film increases and exceeds the threshold voltage at which the ferroelectric liquid crystal molecules are inverted. I do.

Further, the SLM driving circuit 101
Even if the voltage application to M1 is cut off, the orientation of the liquid crystal molecules is preserved by the hysteresis characteristic of the ferroelectric liquid crystal. Therefore, an image written once can be stored for a long period of time even when no voltage is applied to the SLM 1.

The image display device 20 has a film feeding mechanism 14 for feeding the film 2 as an original image and a film feeding means including a film feeding circuit 104 for controlling the film feeding mechanism 14. In addition, film 2
Is a type in which a developed roll film is stored in a state wound around a film cartridge, and is pulled out from the film cartridge by a film feeding mechanism 14.

The image display device 20 includes a xenon tube 7 for illuminating the film 2 and a reflection shade 8 for efficiently condensing the light emitted from the xenon tube 7 onto the film 2.
And a strobe light emitting circuit 10 for controlling light emission of a xenon tube
5 and a projection means including a projection lens 3 and a reflection mirror 4 for projecting the strobe light transmitted through the film 2 onto the SLM 1.

The image display device 20 also includes two fluorescent light sources for illuminating the liquid crystal diffusion plate 9 made of a polymer dispersed liquid crystal disposed immediately before the SLM 1 from the same side where the film image is projected onto the SLM 1. A lamp 5, a reflector 6 for efficiently condensing the light emitted from the fluorescent lamps 5 on the liquid crystal diffuser 9, a fluorescent lamp lighting circuit 102 for controlling the light emission of the two fluorescent lamps 5, Transmission of diffusion plate 9
Liquid crystal diffuser driving circuit 103 for switching and controlling the diffusion state
And lighting means comprising:

Note that the fluorescent lamp 5 is a straight tube type, and the SLM 1
And has a length substantially the same as the length in the longitudinal direction of FIG. The operation principle of the liquid crystal diffusion plate 9 made of polymer dispersed liquid crystal is described in
Since it is described in -229232, the description is omitted here.

The image display device 20 has a film frame number detecting unit 10 for optically detecting the perforation of the film 2 and a perforation detecting circuit for controlling the light emitting and receiving unit 10. Having means.

The image display device 20 has a main switch 21 for turning on / off the power of the device, a group of operation switches 23, and a signal input circuit 106 for detecting the state of each switch. As shown in FIG. 3, the operation switch group 23 includes a feed stop switch 30, a one-frame feed switch (instruction means in the claims), and a one-frame return switch (instruction means also in the claims). ) 32
, A fast-forward switch 33 and a fast-return switch 34.

Further, the image display device 20 stores data such as frame numbers and magnetic information of the film image displayed on the SLM 1 and identification information of the film (related to the film image stored in the storage display means in the claims). (Information) and an LCD display circuit 107 for driving and controlling the liquid crystal display element 22. Note that, as shown in FIG.
Is a reflection type TN liquid crystal display element, and in a dot matrix system, in addition to the frame number (FIG. 4A) and the time (FIG. 4C), a warning that the film cartridge is not loaded (FIG. b)) can also be displayed.

The image display device 20 has an opening / closing mechanism (not shown) for opening / closing the film cartridge chamber lid 25 and an opening / closing switch 24 for operating the same, and further includes a bar code written on the outside of the film cartridge. It also has a film identification means comprising a light emitting / receiving element 26 for reading and a film identification information detecting circuit 108 for controlling the light emitting / receiving element 26.

The image display device 20 has an EEPROM 110 as information storage means for storing data such as frame numbers of film images, film identification information or magnetic information written in the SLM 1.

Next, referring to FIG.
Will be described. First, the main switch 21 arranged on the side of the image display device 20 by the viewer is turned off.
The process waits for N (# 201).

When the main switch 21 is turned on, the CPU 100 for controlling the entire apparatus operates as follows.
02 to turn on the fluorescent lamp 5 (# 20).
2). Thereby, the light from the fluorescent lamp 5 illuminates the SLM 1 via the reflection mirror 4 and the liquid crystal diffusion plate 9. At this time, the illumination light from the fluorescent lamp 5 uniformly illuminates the liquid crystal diffuser 9 set in a diffused state after the application of the voltage is stopped by the liquid crystal diffuser driver 103, and is further diffused by the liquid crystal diffuser 9 to cause the SLM 1 to diffuse. Illuminate evenly. For this reason,
The viewer simply turns on the main switch 21 and already has SL
It is possible to appreciate the film image stored in M1.

When the viewer turns on the main switch 21 (# 201), the fluorescent lamp 5 is turned on and the SLM1 is turned on.
Is backlit (# 202), the CPU 100
Reads the information on the film image stored in the EEPROM 110 to confirm whether the image has already been written in the SLM 1 (# 203).

If the frame number of the film image written in the SLM 1 is stored at a predetermined address of the EEPROM 110, the CPU 100
To display the frame number of the film image displayed on the SLM 1 on the liquid crystal display element 22 disposed on the front of the image display device 20 (# 222). In particular,
As shown in FIG. 4A, the liquid crystal display element 22 displays a frame number by a dot matrix display method.

On the other hand, if the viewer activates the image display device for the first time and the frame number of the film image written in the SLM 1 is not stored at a predetermined address of the EEPROM 110, the CPU 100 uses the film identification means to execute the film identification. Check if is loaded (#
204). Specifically, the CPU 100 sends a signal to the film identification information detection circuit 108 to cause a light emitting element such as an infrared light emitting diode to emit light in order to read a bar code written on the outside of the film cartridge, and to reflect light from the film cartridge. Light is received by a line sensor such as a CCD. The CPU 100 checks whether or not a film is loaded in the film cartridge chamber based on the output of the line sensor.

When it is determined that a film cartridge in which an image has not yet been written to the SLM 1 is loaded in the cartridge chamber, the CPU 100 controls the perforation detection circuit 109 and the film so that the viewer can write the film image smoothly. Feeding circuit 10
Then, a signal is transmitted to the film 4 to feed the film 2 to a predetermined image projection position (a position between the xenon tube 7 and the projection lens 3). Note that the frame number of the film located at the image projection position is determined by optically detecting the perforation of the film 2 using the light emitting / receiving element 10. More specifically, a perforation detection circuit 109 that has received a signal from the CPU 100 causes a light emitting element such as an infrared light emitting diode to emit light to illuminate the end of the film 2 and receives light transmitted through the perforation using a photodiode or the like. The light is received by the element and its output is detected. CPU 100
Determines the frame number from the output of the photodiode detected through the perforation detection circuit 109.

When the film 2 is fed to the 0th frame, the CP
U100 sends a signal to LCD drive circuit 107 to cause liquid crystal display element 22 to display "0"(# 205).

On the other hand, when it is determined in step # 204 that the film cartridge is not loaded in the cartridge chamber,
The CPU 100 sends a signal to the LCD drive circuit 107,
As shown in FIG. 4B, "OUT" is applied to the liquid crystal display element 22.
Is displayed to warn the viewer that no film is loaded (# 221).

After performing a predetermined operation according to whether an image has already been written in the SLM 1 and whether a film has been loaded, the CPU 100 executes the signal input circuit 1.
06 to confirm the state of the main switch 21 (#
206). If the main switch 21 is still ON, the CPU 100 checks whether the cartridge chamber cover open / close switch 24 has been pressed via the signal input circuit 106 (# 207). The viewer converts the film image to SLM1
When the user presses the cartridge chamber cover open / close switch 24 to load a film cartridge to
The PU 100 checks the state of the cartridge chamber cover 25 (# 208). If the cartridge chamber lid 25 is closed,
The CPU 100 controls to open the cartridge chamber cover 25 (# 223), and returns to # 206.

Then, in step # 206, it is confirmed that the main switch 21 is still ON, and the viewer presses the cartridge chamber cover open / close switch 24 to load the film cartridge into the cartridge chamber and close the cartridge chamber cover 25. Then, the CPU 100 confirms that the cartridge chamber cover 25 is open (# 208), and controls to close the cartridge chamber cover 25 (# 209).

Here, when it is confirmed that the film cartridge is loaded (# 210), the identification information of the film is detected. In the present embodiment, since it is confirmed whether or not a film is loaded using the film identification means, the CPU 100 sends a signal to the film identification information detection circuit 108 to read the bar code written on the outside of the film cartridge. For this purpose, a light emitting element such as an infrared light emitting diode emits light, and reflected light from a film cartridge is received by a line sensor such as a CCD.
The CPU 100 confirms whether or not a film is loaded in the cartridge chamber based on the output of the line sensor, and detects film identification information from the barcode information.

When the identification information of the film loaded in the cartridge chamber is detected, the CPU 100 sets the EEPROM 1
The identification information of the film image stored in the memory 10 (written in the SLM 1) is read, and it is confirmed whether or not the identification information of the loaded film matches the identification information of the stored film (# 211).

Here, if the identification information of the loaded film does not match the identification information of the stored film because the film image is not written in the SLM 1, the viewer writes a new film image. The CPU 100 sends a signal to the perforation detection circuit 109 and the film feeding circuit 104 to feed the film 2 to the 0th frame so that the viewer can write the film image smoothly. (# 21
2). At the same time, the CPU 100 sends a signal to the LCD drive circuit 107 to cause the liquid crystal display element 22 to display “0”.

On the other hand, if the identification information of the film loaded in the cartridge chamber matches the identification information of the stored film, it is considered that the viewer intends to perform writing following the already written film image. The CPU 100 is provided with a perforation detection circuit 10 so that the viewer can write the film image smoothly.
9 and a signal to the film feeding circuit 104 to feed the film 2 until the frame corresponding to the frame number stored in the EEPROM 110 is set at the image projection position (# 224). At the same time, the CPU 100
A signal is sent to the CD drive circuit 107 to cause the liquid crystal display element 22 to display the frame number stored in the EEPROM 110.

When the loaded film 2 is fed to the frame before or after the frame to be written this time, the CPU 100
Confirms the state of the operation switch 23 via the signal input circuit 106 (# 213). When the viewer turns on the one-frame forward switch 31 or the one-frame return switch 32 to write an image to be viewed, the CPU 100 sends a signal to the fluorescent lamp lighting circuit 102 to turn off the fluorescent lamp 5 (# 214).

Further, the CPU 100 sends a signal to the film feeding circuit 104 to feed one frame of the film 2 by the film feeding mechanism (# 215). At this time, SL
Even when an image of the same film is written subsequently to the film image written in M1, since the frames before and after the frame to be written this time on the film 2 have been fed to the image projection position, the film 2 is fed by one frame. Only this allows the writing frame to be set at the image projection position. Therefore, writing (rewriting) of a film image can be performed smoothly without requiring extra feeding time. At the same time, the CPU 100 transmits a signal to the SLM drive circuit 101 and applies a voltage in the opposite direction to that at the time of writing to the SLM 1 in order to erase the image previously stored in the SLM 1.

The film 2 is fed by the film feeding mechanism 14.
When the currently written frame is fed to the image projection position,
The PU 100 transmits a signal to the LCD drive circuit 107 to cause the liquid crystal display element 22 to display a new frame number (# 21).
6).

Further, the CPU 100 executes writing of a film image to the SLM 1. First, the CPU 100
Transmits a signal to the strobe light emitting circuit 105 to cause the xenon tube 7 to emit light and illuminate the film 2 (# 217).
The light transmitted through the film 2 is projected light 3 and reflection mirror 4
And is projected on the SLM 1 via the liquid crystal diffusion plate 9. At this time, a voltage is applied to the liquid crystal diffusion plate 9 by the liquid crystal diffusion plate driving circuit 103, and the liquid crystal diffusion plate 9 is set in a transmission state. As a result, the liquid crystal diffuser 9 does not hinder image writing to the SLM 1. Note that, regarding the projection lens 3, the film 2 and the SLM 1 are conjugate.

The CPU 100 transmits a signal to the SLM driving circuit 101 while the xenon tube 7 emits light to
1 is applied with a predetermined pulse voltage (# 218). As a result, in the SLM 1, the ferroelectric liquid crystal molecules in the region where the light is irradiated on the photoelectric conversion film are inverted, and the transfer of the film image is performed. Then, the film image transferred to the SLM 1 is stored by the storage action of the ferroelectric liquid crystal constituting a part of the SLM 1. When the writing of the film image to the SLM 1 is completed, the CPU 100 sends a signal to the fluorescent lamp lighting circuit 102 to turn on the fluorescent lamp 5 (# 2).
19). At the same time, the CPU 100
A signal is transmitted to the liquid crystal panel 03 to stop applying the voltage to the liquid crystal diffuser 9, and the liquid crystal diffuser 9 is set to be in a diffusion state.
Thus, the reflection mirror 4 and the liquid crystal diffuser 9 in the diffused state
Illuminated uniformly by the fluorescent lamp 5 via the
The viewer 13 can appreciate the subject image photographed on the film 2 by the light transmitted through 1.

Further, the CPU 100 stores the frame number of the film newly written in the SLM 1 in the EEPROM 110 (# 220).

When the writing (rewriting) of the film image to the SLM 1 is completed, the process returns to # 206 and # 207. When the main switch 21 remains ON in # 206 and the cartridge chamber cover open / close switch 24 is not pressed in # 207, it is confirmed that the film has been loaded in the cartridge chamber (# 23).
0), and proceed to # 213. If the one-frame forward switch 31 or the one-frame return switch 32 is operated in # 213, the image rewriting operations of # 214 to # 220 are performed again.

On the other hand, if neither the one-frame forward switch 31 nor the one-frame return switch 32 has been operated in # 213, the CPU 100 checks whether the fast-forward switch 33 or the fast-return switch 34 has been operated (# 2
25) When operated, a signal is sent to the film feeding circuit 104 in accordance with the operated switch, and the film feeding mechanism 14 causes the film 2 to fast-forward or rewind (#).
226). At this time, the CPU 100 transmits a signal to the LCD drive circuit 107 to cause the liquid crystal display element 22 to display the number of the frame passing the image projection position (# 227). When the viewer sees the frame number displayed on the liquid crystal display element 22 and operates the stop switch 30 (# 228), the CPU 100
Transmits a signal to the film feeding circuit 104 to stop the film feeding (# 229), and returns to # 206.

In step # 206, when the viewer finishes watching and turns off the main switch 21, the CPU 10
In step # 231, a signal is transmitted to the fluorescent lamp lighting circuit 102 to turn off the fluorescent lamp 5 (# 231). CPU 100
Transmits a signal to the LCD drive circuit 107 to set the liquid crystal display element 22 to display the time as shown in FIG. 4C (# 232).

At this time, if the film 2 is being fed (# 233), the CPU 100 sets the film feeding circuit 104
To the film 2 by the film feeding mechanism.
Is rewound (# 234).

When a series of sequences is completed as described above (# 235), the sequence returns to the initial state (# 200).
It waits until the main switch 21 is turned on (# 20
1).

In this embodiment, the case where the identification information of the film is obtained by reading the bar code written on the outside of the film cartridge has been described. However, the bar code written on the film itself in the cartridge is read. You may make it obtain the identification information of a film.

In this embodiment, the liquid crystal display element 22
The case where the frame number, time, and warning display of the film are performed is described above. As shown in FIG. 4D, a comment (title) corresponding to the film image recorded in the magnetic storage unit formed on the film is provided. Other information may be displayed.

(Second Embodiment) FIGS. 7 to 9 show an image display device according to a second embodiment of the present invention. FIG. 7 is a perspective view of the image display device, and FIGS.
FIG. 9 is an explanatory diagram of a liquid crystal display element, and FIG. 9 is a flowchart of the operation of the image display device. Since the layout and the electric circuit of the image display device of the present embodiment are the same as those of the first embodiment, they are denoted by the same reference numerals as those of the first embodiment and will not be described.

The image display apparatus of the present embodiment differs from the first embodiment in that it has a display changeover switch 27 for switching the display contents of the liquid crystal display element 22 as information display means, as shown in FIG. As shown in FIG. 8, the liquid crystal display element 22 is composed of a reflection type TN liquid crystal display element, and has six sets of seven segments. Identification information (FIG. 8)
(B)) can also be displayed.

Hereinafter, the operation of the image display apparatus according to the present embodiment will be described with reference to FIG. First, the main switch 21 arranged on the side of the image display device 20 is turned on by the viewer.
It is on standby until it is done (# 241).

When the main switch 21 is turned on, the CPU 100 for controlling the entire apparatus operates as follows.
02 to turn on the fluorescent lamp 5 (# 24).
2). Thereby, the light from the fluorescent lamp 5 illuminates the SLM 1 via the reflection mirror 4 and the liquid crystal diffusion plate 9. At this time, the illumination light from the fluorescent lamp 5 uniformly illuminates the liquid crystal diffuser 9 set in a diffused state after the application of the voltage is stopped by the liquid crystal diffuser driver 103, and is further diffused by the liquid crystal diffuser 9 to cause the SLM 1 to diffuse. Illuminate evenly. For this reason,
The viewer 13 can view the film image already stored in the SLM 1 only by turning on the main switch 11.

When the viewer turns on the main switch 21 (# 241), the fluorescent lamp 5 is turned on and the SLM1 is turned on.
Is backlit (# 242), the CPU 100
Reads information on the film image stored in the EEPROM 110. Further, the CPU 100 checks the state of the display changeover switch 27 via the signal input circuit 106 (# 243).

If the viewer presses the display changeover switch 27 to confirm the film identification information of the image written in the SLM 1, the CPU 100 operates the LCD drive circuit 1.
7 is transmitted to the liquid crystal display element 22 disposed on the front surface of the image display device 20, as shown in FIG.
It is stored at a predetermined address of the EPROM 110 (S
The film identification information of the image (written in LM1) is displayed (# 260). For this reason, the viewer can check even if the film of the image written on the SLM 1 is lost.

The CPU 100 continues to operate the signal input circuit 1
The state of the display changeover switch 27 is confirmed via 06 (# 243). When the viewer stops pressing the display changeover switch 27, the CPU 100 transmits a signal to the LCD drive circuit 107 and stores the signal in the liquid crystal display element 22 at a predetermined address of the EEPROM 110 as shown in FIG. The frame number of the image (written in SLM1) is displayed (# 244).

After displaying the film identification information and the frame number when an image has already been written in the SLM 1, the CPU 100 checks the state of the main switch 21 via the signal input circuit 106 (# 245). If the main switch 21 remains ON, the CPU 100
Confirms whether the cartridge chamber cover open / close switch 24 has been pressed through the signal input circuit 106 (# 24).
6). When the viewer presses the cartridge chamber lid open / close switch 24 to load a film cartridge in order to write a film image on the SLM 1, the CPU 100 checks the state of the cartridge chamber lid 25 (# 247). If the cartridge chamber cover 25 is closed, the CPU 100 controls the cartridge chamber cover 25 to open (# 25).
9) Return to # 243 to # 245.

Then, at # 245, it is confirmed that the main switch 21 is still ON, and the viewer presses the cartridge chamber lid open / close switch 24 to load the film cartridge into the cartridge chamber and close the cartridge chamber lid 25. Then, the CPU 100 confirms that the cartridge chamber cover 25 is open (# 247), and controls to close the cartridge chamber cover 25 (# 248).

Here, when it is confirmed that the film cartridge is loaded (# 210), the identification information of the film is detected. In the present embodiment, since it is confirmed whether or not a film is loaded using the film identification means, the CPU 100 sends a signal to the film identification information detection circuit 108 to read the bar code written on the outside of the film cartridge. For this purpose, a light emitting element such as an infrared light emitting diode emits light, and reflected light from a film cartridge is received by a line sensor such as a CCD.
The CPU 100 confirms whether or not a film is loaded in the cartridge chamber based on the output of the line sensor, and detects film identification information from the barcode information.

When the identification information of the film loaded in the cartridge chamber is detected, the CPU 100 transmits a signal to the LCD drive circuit 107 to display the identification information of the loaded film cartridge on the liquid crystal display element 22 (# 2
50). At this time, when the viewer turns on the one-frame forward switch 31 or the one-frame return switch 32 of the operation switches 23 in order to write the image to be viewed on the SLM 1, (#
251), the CPU 100 checks whether the film identification information stored in the EEPROM 110 (written in the SLM1) matches the identification information of the newly loaded film (# 252).

Here, if the identification information of the loaded film does not match the identification information of the stored film because the film image is not written in the SLM 1, the viewer writes a new film image. The CPU 100 sends a signal to the perforation detection circuit 109 and the film feeding circuit 104 to feed the film 2 to the first frame so that the viewer can write the film image smoothly. (# 25
3). At the same time, the CPU 100 sends a signal to the LCD drive circuit 107 to cause the liquid crystal display element 22 to display “1”.

On the other hand, if the identification information of the film loaded in the cartridge chamber and the stored identification information of the film match, it is considered that the viewer intends to perform writing following the already written film image. The CPU 100 is provided with a perforation detection circuit 10 so that the viewer can write the film image smoothly.
9 and the film feeding circuit 104 to feed the film 2 so that the frames before and after the frame number stored in the EEPROM 110 are at the image projection position (# 26).
1). That is, when the one-frame forward switch 31 is turned on, the frame is fed up to the frame following the frame number stored in the EEPROM 110, and when the one-frame return switch 32 is turned on, E is fed.
It feeds up to the frame before the frame number stored in the EPROM 110. As a result, the loaded film 2 is fed so that the frame to be written this time is set at the image projection position.

Therefore, even when an image of the same film is written after the film image already written in the SLM 1, the frame to be written this time on the film 2 is fed to the image projection position at this stage. Write (rewrite) film images without the need for transport time
Can be performed smoothly. Note that the CPU 100 is an LC
A signal is sent to the D drive circuit 107 to the liquid crystal display element 22,
The frame number of the frame set at the image projection position is displayed.

If, of course, the one-frame forward switch 31 or the one-frame reverse switch 32 is turned on (unless frame advance or frame return has already been performed) immediately after the film cartridge is loaded (# 251), the current Is performed one frame forward or one frame back with respect to the writing frame set in (1).

When the currently written frame of the loaded film 2 is set at the image projection position, the CPU 100
Sends a signal to the fluorescent lamp lighting circuit 102 to turn off the fluorescent lamp 5 (# 254). At the same time,
To erase the image previously stored in SLM1,
A signal is transmitted to the SLM drive circuit 101 to apply a voltage to the SLM 1 in a direction opposite to that in writing.

Next, the CPU 100 executes writing of a film image to the SLM 1. First, the CPU 100
Transmits a signal to the strobe light emitting circuit 105 to cause the xenon tube 7 to emit light and illuminate the film 2 (# 255).
The light transmitted through the film 2 is projected light 3 and reflection mirror 4
And is projected on the SLM 1 via the liquid crystal diffusion plate 9. At this time, a voltage is applied to the liquid crystal diffusion plate 9 by the liquid crystal diffusion plate driving circuit 103, and the liquid crystal diffusion plate 9 is set in a transmission state. As a result, the liquid crystal diffuser 9 does not hinder image writing to the SLM 1. Note that, regarding the projection lens 3, the film 2 and the SLM 1 are conjugate.

The CPU 100 sends a signal to the SLM drive circuit 101 while the xenon tube 7 emits light to
1 is applied with a predetermined pulse voltage (# 256). As a result, in the SLM 1, the ferroelectric liquid crystal molecules in the region where the light is irradiated on the photoelectric conversion film are inverted, and the transfer of the film image is performed. Then, the film image transferred to the SLM 1 is stored by the storage action of the ferroelectric liquid crystal constituting a part of the SLM 1. When the writing of the film image to the SLM 1 is completed, the CPU 100 sends a signal to the fluorescent lamp lighting circuit 102 to turn on the fluorescent lamp 5 (# 2).
57). At the same time, the CPU 100
A signal is transmitted to the liquid crystal panel 03 to stop applying the voltage to the liquid crystal diffuser 9, and the liquid crystal diffuser 9 is set to be in a diffusion state.
Thus, the reflection mirror 4 and the liquid crystal diffuser 9 in the diffused state
Illuminated uniformly by the fluorescent lamp 5 via the
The light transmitted through 1 allows the viewer to view the subject image captured on the film 2.

Further, the CPU 100 stores the frame number of the film newly written in the SLM 1 in the EEPROM 110 (# 258).

When the writing (rewriting) of the film image to the SLM 1 is completed, the flow returns to # 243. Then, in # 245, the main switch 21 remains ON, and in # 246, the cartridge chamber lid open / close switch 24
If it is not pressed, it is confirmed that the film has been loaded in the cartridge chamber (# 262),
Go to 51. When the one-frame forward switch 31 or the one-frame return switch 32 is operated in # 251 (because the film identification information is the same in # 252), the process proceeds to # 253, and the film 2 is stored in the EEPROM 11
The frame is fed so that the frame after the frame number (the number of the previously written frame) stored in 0 is at the image projection position or the previous frame is at the image projection position. And # 254 to # 2
The image rewriting operation up to 58 is performed again.

On the other hand, if neither the one-frame forward switch 31 nor the one-frame return switch 32 has been operated in # 251, the CPU 100 checks whether or not the fast-forward switch 33 or the fast-return switch 34 has been operated (# 2
63) When operated, a signal is sent to the film feeding circuit 104 in accordance with the operated switch, and the film 2 is fast-forwarded or fast-returned by the film feeding mechanism 14 (#)
264). At this time, the CPU 100 transmits a signal to the LCD drive circuit 107 to cause the liquid crystal display element 22 to display the number of the frame passing through the image projection position (# 265). When the viewer operates the stop switch 30 while watching the frame number displayed on the liquid crystal display element 22 (# 266), the CPU 100
Transmits a signal to the film feeding circuit 104 to stop the film feeding (# 267), and returns to # 243.

In step # 243, when the viewer finishes watching and turns off the main switch 21, the CPU 10
0 sends a signal to the fluorescent lamp lighting circuit 102 to turn off the fluorescent lamp 5 (# 268). CPU 100
Is set to transmit a signal to the LCD drive circuit 107 to display the time on the liquid crystal display element 22 (# 269). At this time, if the film 2 is being fed (# 270),
The CPU 100 sends a signal to the film feeding circuit 104 to rewind the film 2 by the film feeding mechanism (#
271).

When a series of sequences is completed as described above (# 272), the sequence returns to the initial state (# 240).
Wait until the main switch 21 is turned on (# 24)
1).

In this embodiment, the case where the identification information of the film is obtained by reading the bar code written on the outside of the film cartridge has been described. However, the bar code written on the film itself in the cartridge is read. You may make it obtain the identification information of a film.

In each of the above embodiments, an image display device using a liquid crystal type spatial light modulator as a storage and display means has been described. However, the present invention uses a spatial light modulator other than the liquid crystal type, for example, a BSO. The present invention can also be applied to an image display device using a spatial light modulation element or another storage display means.

[0082]

As described above, according to the present invention,
Since there is provided an information storage means for storing information (film identification information and image frame number) relating to the film image stored in the storage display means, even if the film cartridge is pulled out from the apparatus, the information is stored in the storage display means. The device itself can determine which film and which frame the displayed image is from, and can be displayed to inform the viewer.

It is to be noted that a frame to be moved to the image projection position among the loaded films can be set according to the information stored in the information storage means.
When the identification information of the loaded film matches the identification information of the film stored in the information storage means, the frame corresponding to the frame number stored in the information storage means is moved to the image projection position, When the frame advance is instructed when the identification information of the film and the identification information of the film stored in the information storage means match, the frame corresponding to the frame number stored in the information storage means is moved to the image projection position. When the frame return is instructed, the frame corresponding to the frame number stored in the information storage means is moved to the image projection position when the frame return is instructed. Since the frame in which the image is stored or the frames before and after the frame are set at the image projection position, the image can be rewritten only by performing one frame advance / return or without any advance / return. It is possible.

When the identification information does not match or the film is loaded when the information storage means does not store information on the film image, the 0th frame or the 1st frame of the film is moved to the image projection position. The image writing using the new film can be performed smoothly.

Further, if a predetermined display is displayed on the information display means when no film is loaded,
It is possible to give a warning display to the viewer that the camera is not loaded.

[Brief description of the drawings]

FIG. 1 is an overall external view and a side view of an image display device according to a first embodiment of the present invention.

FIG. 2 is an internal layout diagram of the image display device.

FIG. 3 is an explanatory diagram of an operation switch group of the image display device.

FIG. 4 is an explanatory view illustrating display of a liquid crystal display element in the image display device.

FIG. 5 is an electric circuit block diagram of the image display device.

FIG. 6 is an operation flowchart of the image display device.

FIG. 7 is an overall external view of an image display device according to a second embodiment of the present invention.

FIG. 8 is an explanatory view illustrating display of a liquid crystal display element in the image display device according to the second embodiment.

FIG. 9 is an operation flowchart of the image display device of the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... SLM 2 ... Film 3 ... Projection lens 4 ... Reflection mirror 5 ... Fluorescent lamp 6 ... Reflection shade 7 ... Xenon tube 8 ... Reflection shade 9 ... Liquid crystal diffuser plate 10 Projecting / receiving element 14 Film feeding mechanism 20 Image display device 21 Main switch 22 Liquid crystal display device 24 Film cartridge chamber lid open / close switch 25 ... Film cartridge chamber cover 26 ... Emitting / receiving element 23 ... Operation switch group 31 ... One frame feed switch 32 ... One frame return switch

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04N 1/00 G02F 1/137 510

Claims (12)

[Claims] 1. An image projected from a film is stored,
An image display device having storage display means for displaying the stored image, further comprising information storage means for storing information about a film corresponding to the image stored in the storage display means. 2. The method according to claim 1, wherein the information on the film image is at least one of film identification information and an image frame number.
The image display device according to claim 1, further comprising: 3. A film feeding means for moving a frame of a film to a position for projecting an image on said storage and display means, wherein when a film is loaded, newly detected information and said information 3. A control device for comparing the information stored in the storage device and setting a frame to be moved to the image projection position by the film feeding device among the loaded films. An image display device according to claim 1. 4. The information storage means stores identification information of a film and a frame number of an image. When a film is loaded, the control means controls the identification information of the loaded film and the information. It is determined whether or not the identification information of the film stored in the storage means matches, and when the identification information matches, the frame of the loaded film corresponding to the frame number stored in the information storage means is image-projected. The image display device according to claim 3, wherein the image display device is moved to a position. 5. When the identification information of the loaded film and the identification information of the film stored in the information storage unit do not match, the control unit determines that the 0th frame of the loaded film is the zeroth frame. The image display device according to claim 4, wherein the image display device is moved to an image projection position. 6. The information storage means for storing identification information of a film and a frame number of an image, and has an instruction means for instructing a frame advance and a frame return of the film, wherein the film is loaded. The control means determines whether or not the identification information of the loaded film matches the identification number of the film stored in the information storage means. When the instruction is given, the frame corresponding to the frame number stored in the information storage means among the loaded films is moved to the image projection position. 4. The image display device according to claim 3, wherein a frame corresponding to a frame number stored in the information storage unit is moved to the image projection position. 7. When the identification information of the loaded film and the identification information of the film stored in the information storage means do not match, the control means determines that the first frame of the loaded film is the first frame. The image display device according to claim 6, wherein the image display device is moved to an image projection position. 8. The image display device according to claim 1, further comprising information display means for displaying information on the film stored in said storage display means. 9. An image display apparatus according to claim 8, wherein said information display means displays film identification information and a frame number of an image. 10. The control means, when the information storage means does not store information on a film and a film is loaded, moves the 0th frame of the film to the image projection position. The image display device according to any one of claims 3 to 9, wherein: 11. The image display device according to claim 8, wherein the control unit causes the information display unit to perform a predetermined display when a film is not loaded. 12. The image display device according to claim 1, wherein said storage display means comprises a spatial light modulator.