JPH07131705A - Adaptor for film picture projection - Google Patents

Abstract

PURPOSE:To improve the operability by communicating instruction data providing a reproduction operation in the mount state of the adaptor able to be mounted onto a television camera between the adaptor main body and the television camera. CONSTITUTION:The system employing the adaptor is provided with the adaptor main body 100 and a television camera 200 and the both are connected by a cable 3 in a connectable/disconnectable way. When the reproduction mode is instructed a picture of a film F supplied from a film cassette 4 loaded to the adaptor main body 100 is irradiated with by a light from a lightening window 104, is projected onto a CCD 215 of the television camera 200 via a projection opening 110 and the picture is picked up. A picked-up picture signal is displayed on a monitor. instructing data for reproduction from a remote commander control section 150 are sent to the television camera 200 from the adaptor main body 100 via the cable 3, in which the video reproduction processing is conducted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film image projection in which an adapter main body can be attached to a television camera which has an image pickup means to pick up an image of a subject and which can be played back on a monitor based on a playback instruction. For adapters.

[0002]

2. Description of the Related Art In order to meet the demand for viewing a film image photographed on a monitor and viewing it, an integrated film reproducing apparatus has been proposed in consideration of operability and convenience. However, since this type of device can be used only for the purpose of reproducing a film, although it is expensive, it cannot be denied that the device is expensive. Therefore, as a versatile device,
Conventionally, an image reproducing system has been proposed in which a frame image of a disc film is projected, imaged by a television camera, and reproduced on a TV receiver (Japanese Patent Publication No. 60-49329).
In this system, a disc film rotation drive unit, a projection light source unit, and a television camera unit are positioned and loaded in a dedicated housing and can be used.

[0003]

The system described in the above publication merely has a function of picking up a film image with a television camera and reproducing it, and the operation of each part for reproduction is performed independently. It has to be done, and it is very complicated, and the operability of the system has not been taken into consideration.

The present invention has been made in view of the above, and can be mounted on a television camera, and in the mounted state, the instruction data is communicated between the adapter body and the television camera to improve the operability. An object is to provide an adapter for projecting a film image.

[0005]

According to the present invention, there is provided a film in which an adapter main body can be attached to a television camera which has an image pickup means to pick up an image of a subject and which can be reproduced on a monitor based on a reproduction instruction. An adapter for image projection, comprising a film cassette loading section, a film feeding means for feeding a film from the loaded film cassette and feeding it to a projection position, and a projection image of the film fed to the projection position. A projection opening for guiding to the image pickup means, a mounting member for mounting the adapter main body on the television camera by aligning the projection opening and the projection position with the optical axis of the image pickup means, and an operation section for giving a reproducing operation instruction. A data transmission member that is a communication line between the adapter body and the television camera for reproducing the reproduction instruction data and that can be connected to and detached from the television camera. Those were.

[0006]

In the film image projection adapter, the mounting member maintains a stable positional relationship with the television camera. Then, when the film cassette is loaded and reproduction, that is, projection is instructed, the film is fed to the projection position, and external light or light source light is applied to the film at the projection position, and the image is taken by the television camera through the projection opening. The image is projected on the means. The captured film image is displayed on the monitor. At this time, instruction data from the operation unit, for example, instruction data for starting and stopping reproduction, film forward feed, reverse feed, and high speed feed are transmitted to the television camera side as reproduction instruction data via the data transmission member. The television camera captures a film image according to the reproduction instruction data transmitted from the adapter body or performs a reproduction processing operation on a monitor.

On the other hand, when the operation section outputs the reproduction instruction data as the instruction data, the data is transmitted to the adapter main body side through the data transmission member and the projection processing operation is performed as the instruction data.

When not in use, the data transmission member is detached from the television camera while the data transmission member is detached, or the data transmission member is detached in association with the detachment.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an internal structural view of a film image projection adapter according to the present invention mounted on a television camera, and FIG. 2 is a perspective view thereof.

Reference numeral 100 denotes an adapter main body of a film image projection adapter, which is mounted by inserting a projection opening 110, which will be described later, on the outer periphery of a cylindrical image pickup portion 210 which projects slightly in front of the television camera 200. Further, the two are connected by a cable 3 which is electrically coupled.
A cylindrical mounting portion 111 having a predetermined length from the rear surface of the adapter body 100 and having an inner diameter substantially equal to that of the image capturing portion 210 is extended in the projection opening 110, and a step portion 111a is formed in the middle of the inner wall thereof. It is set around. By contacting the tip of the image pickup unit 210 with the stepped portion 111a, the positional relationship between the two, in particular, the optical axis 108 of the image pickup unit 210 is made to coincide and stably held.

As shown in FIG. 2, the adapter body 100 has an insertion opening 101 for loading and unloading a film cartridge 4 in which a developed film is wound and stored in a proper position on the front side surface, and the lower side thereof is an axis. A lid 102 that is rotatable around the center is provided. The lid 102 is held in a closed state by a lock mechanism (not shown), and when the eject button 103 on the upper surface of the adapter body 100 is pressed, the lock is released, and the lid 102 is pressed by its own weight.
Alternatively, it is rotated downward by a biasing member such as a coil spring,
It is designed to open. The lid 102 is provided with a micro switch or the like (not shown) that detects opening and closing of the lid 102.
This detection signal is guided to the microcomputer 114 described later. Further, when an improper film cassette, for example, an undeveloped film cassette is loaded, the lock can be automatically released by using an electromagnetic solenoid mechanism (not shown) engaged with the eject button 103. I have to.

On the front surface of the adapter body 100 facing the projection opening 110, a daylighting window 104 is formed to enable effective introduction of external light used as a light source.

The film cassette 4 is an adapter body 100.
The film is horizontally loaded inside, and the film can be unwound from the unwinding port 41 directed upward. A loading detection switch (not shown) is provided in the loading portion of the film cassette 4, and an optical sensor for detecting the presence or absence of the presence or absence of the film cassette 4 by blocking or reflecting the optical path, or It consists of a mechanical micro switch.

At the loading portion of the film cassette 4, there is provided a film feeding mechanism for winding and rewinding the film. The film feeding mechanism includes a motor 105 and a reel 106a for rotating the spool of the film cassette 4.
And a reduction gear 107 that meshes with both,
A winding rod 106b for winding the film is disposed above the projection opening 110 and is rotated synchronously from the motor 105 via a gear system (not shown). The rotational driving force of the motor 105 is passed through the reduction gear 107 and a gear system (not shown) to the reel 106a and the winding rod 10.
6b is transmitted.

The film cassette 4 and the winding rod 1
In 06b, the center of the film to be fed is the image pickup means 210.
The optical axis 108 and the optical axis 108 are orthogonal to and coincide with each other, and are provided so as to face the projection opening 110. Although not shown in FIGS. 1 and 2, the film cassette 4
Inside, a spool around which the base end of the film F is attached is rotatably arranged. The motor drive circuit 109 outputs a drive signal based on a control signal from the microcomputer 114 to rotate the motor 105 forward and backward at a predetermined set speed.

Reference numeral 112 is a film information detecting means for reading the kind of film (negative, positive, black and white), the number of frames and a developed signal written in a proper place of the film cassette 4 by using magnetic or optical means, 113. Is a mark detection means for at least one of the upper and lower sides of the film F, which marks or is provided corresponding to each frame and detects a mark to position the projection position. The mark detecting means 113 is composed of a light emitting element 113a and a light receiving element 113b, which are arranged so as to face each other on both sides of the feeding film F, and the light receiving element 113b detects the amount of light transmission that changes depending on the presence or absence of a mark. The detection signal is input to the microcomputer 114. Then, the motor drive circuit 109 feeds the film F in a predetermined direction via the motor 105, and also makes each frame coincide with the projection position and stops it. The mark detection means 113 or another detection means is used to detect the shooting posture (vertical position, horizontal position) described in each frame at the time of shooting.

The microcomputer 114 transmits data to and from the microcomputer 214 built in the television camera 200, which will be described later, via the cable 3 and the remote controller operation unit 150.
The data transmission and the operation of each unit are controlled by receiving the instruction data from. 115 is a remote control operation unit 15
In order to receive an infrared optical signal transmitted from 0, for example, a coded signal is received by a light receiving unit formed of a photo sensor facing a light receiving window 116 formed at a proper position of the adapter body 100. It is decoded by the remote control data processing unit 117 and input to the microcomputer 114. Instead of infrared rays, radio waves or ultrasonic waves may be used as a medium.
Reference numeral 118 denotes a power supply unit that supplies a required level of power to necessary circuit units in addition to the motor 105 and the microcomputer 114.

Next, the television camera 200 will be described. The television camera 200 has basically the same configuration as a commercially available video camera, and additionally, the microcomputer 214 has a communication function with the adapter body 100, and the cable 3 is detachably connected. Is provided with a connector 201.

In FIG. 2, the television camera 200 instructs the appropriate position on the upper surface to slide the switch 202 for switching the camera photographing operation and the video reproducing operation, and to move the zoom lens inside the image pickup section 210 to the tele end and the wide end. Push buttons 203 and 204, and a microphone 205 for voice recording are provided on the front upper part. In addition, the imaging unit 2 described above
A viewfinder 206 is provided on the rear surface of the TV camera 200, which is behind the camera 10. It should be noted that operation buttons and the like necessary for a shooting operation by the television camera 200 are provided in a portion that is not visible in FIG.

In FIG. 1, a photographing lens group including a zoom lens 207, a focusing lens 208, etc. is arranged in an image pickup section 210, and a diaphragm 209 is arranged at an appropriate position. The zoom drive unit 211 is a zoom lens 207.
Is driven to change the image magnification, and is moved to the macro area in this reproducing operation. The AF unit 212 controls the focusing lens 208 to perform focus adjustment, and the AE unit 213 controls the diaphragm 209 to perform exposure adjustment.

An image pickup member (hereinafter referred to as a CCD) 21 in which a large number of photoelectric conversion elements are arranged in a matrix on the optical axis 108 behind the taking lens group of the image pickup section 210.
5 are arranged. The video circuit 216 converts the image signal output from the CCD 215 into a video signal and outputs the video signal to the recording / playback unit 218 in the next stage, or the monitor output terminal 21.
9 is output. The video circuit 216 is internally provided with a negative / positive inversion circuit section, and when the film information detecting means 115 detects that the reproduced film F is a negative film, it is switched in response to an instruction from the microcomputer 214. The changeover switch 217 allows the image signal to pass through the negative / positive inversion circuit section to generate and output a positive image.

The exposure adjustment is performed by detecting the video signal level taken into the video circuit 216 and setting the control aperture value of the aperture 209 based on this video signal level. The focus adjustment is obtained by monitoring the contrast state in a predetermined area (or the contrast state is easy to monitor) from the image signal taken into the video circuit 216 and finely moving the focusing lens 208 in the front-back direction. Focusing lens 20 in the direction in which the contrast state is better than the contrast state
It is carried out by a so-called hill climbing method of moving 8 points.

The recording / reproducing unit 218 is provided with a recording medium such as a magnetic tape for recording an input video signal, a drive unit for the recording / reading recording head, and the like. It has a section. The monitor output terminal 219 is provided at an appropriate place on the surface of the television camera 200, and can be connected to the monitor via a video cable (not shown).

Auto white balance sensor (hereinafter referred to as A
The WB sensor) 220 is arranged at a position where the color temperature of the external light that illuminates the film can be detected, and achieves color reproduction by performing suitable white balance processing on the video signal according to the detected color temperature. . Reference numeral 221 denotes a power supply unit that supplies a required level of power to each circuit unit of the television camera 200 and also supplies power to the power supply unit 118 of the adapter body 100 via the cable 3.

The microcomputer 214 comprehensively controls the operation of each circuit section of the television camera 200, and also the adapter body 1
00, the reproduction mode is switched from the video reproduction mode to the film reproduction mode based on these data, and the reproduction processing in the film reproduction mode is executed.

Next, regarding the remote control operation unit 150,
This will be described with reference to FIG. The remote controller operation unit 150 has various operation buttons on the operation surface and a light emitting unit 151 including a light emitting element such as an LED on the front surface, and transmits instruction data to the light receiving unit 115 of the adapter body 100.

The operation buttons will be described below. The power button 152 is for making the remote control operation unit 150 operable. The auto button 153 is used to instruct switching of whether to automatically feed each frame of the film or to manually feed each frame, and when the automatic feeding is selected, the film feeding is started and each When the frame feeding, the image capturing and the reproducing operation are continued for the number of frames at a cycle of, for example, 5 seconds, and the manual feeding is selected, the operation according to the operation of another operation button described later is performed. The forward feed button 154 rotates the motor 105 in the forward direction to feed the film in the forward direction (feeding direction) by one frame, and the reverse feed button 155 reverses the motor 105 in the reverse direction (winding). The film is fed in the return direction). The high speed feed button 156 is used to feed the film at a higher speed, and is continued while the button 156 is pressed. If the feeding speed of high-speed feeding is higher, the time required to guide the desired frame to the projection position can be shortened, but at least the image can be confirmed on the monitor screen by enabling the imaging operation during film feeding. It is preferable that it is set to such an extent (high-speed search). The zoom up button 157 and the zoom down button 158 are operated when enlarging or reducing an image of a frame and displaying it on the monitor. While the buttons are pressed, the zoom drive unit 211 is pressed.
Operates to move the zoom lens 207 to the tele side or the wide side. In addition, this remote control operation unit 150
, Which is not shown, is a fast-forward button 15 for searching.
6, high-speed feed and its direction can be specified in one operation,
For example, a seesaw-type button may be adopted. The high-speed rewinding of the film is instructed by the eject button 103.

The rotation button 159 is for instructing to rotate the film image by 90 °. For a frame image which is being photographed in the vertical position (with the camera oriented vertically), this image is displayed on the monitor. Return it to the side, that is, erect it and play it. The 90 ° rotation of the image can be realized as follows. That is, a rotation mechanism that integrally rotates the entire loading portion of the film cassette 4 and the film feeding mechanism portion by 90 ° about the optical axis 108 is used, or an optical reversing prism is provided between the projection position and the projection opening 110. The optical axis 108 may be arranged to be retractable so that it appears when the rotary button 159 is operated. Or C
The CD 215 can be rotated on the optical axis 108, the CCD 21
5 so that the 90 ° rotation process can be performed in the process of capturing the image data from the image circuit 5 to the video circuit 216
A special configuration or function may be adopted on the side.

Next, the operation of projecting and reproducing the film image will be described with reference to the flowcharts of FIGS. In the figure, the left side of the dashed line is the adapter body 100.
2 shows the procedure by the microcomputer 114, the right side shows the operation by the microcomputer 214 of the television camera 200, and the arrow line between them shows the transmission of the instruction data performed via the cable 3.

First, when the adapter body 100 is attached to the television camera 200, the cable 3 is connected, and the power switch (not shown) of the adapter body 100 is operated,
The power is turned on (# 2, # 4). This power-on signal turns on the power of the television camera 200 via the cable 3 (## 4). Moreover, at this time, the film reproduction mode is switched to.

Subsequently, when the loading of the film cassette 4 is confirmed (# 6), the film information is read by the film information detecting means 115 and it is confirmed whether or not the loaded film has been developed (# 8). . If it is an undeveloped film, the lock of the lid 102 is unlocked and the ejection of the film cassette 4 is prompted (# 10). If it is a developed film, next, it is determined whether the film information is a negative film from the previously read film information. It is determined whether the film is a positive film (# 12). In the case of a negative film, the determination signal switches the negative / positive changeover switch 217 via the cable 3 and turns on the negative / positive inversion circuit 216 (## 12).

When the microcomputer 114 detects the number of frames of the film from the film information (# 14), the motor 105 is rotationally driven via the motor drive circuit 109, so-called loading start is performed to project the first frame. Set it to the position (# 16, # 18). A signal instructing to start loading drives the zooming lens 207 through the cable 3 to move it to a predetermined macro area (## 16). Then, when the first frame is set to the projection position, this set is confirmed by the transmitted mark detection signal, the video circuit 216 is turned on, and the recording / reproducing unit 218 is set to the recording standby state (## 18. 、 #
# 19).

In this state, next, the remote controller operating unit 150
It is determined whether or not the auto button 153 has been turned on (# 20). When the auto button 153 is on,
Go to steps # 20 to # 30. At this time, the ON signal of the auto button 153 is transmitted to the microcomputer 214 via the cable 3 to start the operation of the recording / reproducing unit 218 of the television camera 200 (# 20). Therefore, the film image of the first frame set at the projection position is captured by the CCD 215 of the television camera 200, and the video circuit 21
After being converted into a video signal in step 6, the video signal is recorded in the recording / reproducing unit 218 and is also guided to the monitor via the monitor output terminal 219 and displayed. Then, after 5 seconds have passed after the display (# 22), the film is fed and the next frame is set at the projection position (# 24). At this time, the auto button 15
If No. 3 continues to be in the ON state, it is judged whether or not the film is fed for all frames (# 26, # 2).
8). When the auto button 153 is switched off or when the film feeding is completed for all frames, the film feeding is stopped (# 30) and the process returns to # 20.

On the other hand, if the auto button 153 is off in # 20, it means that the operation is manual operation, and subsequently, the operation state of the forward feed button 154, the reverse feed button 155, or the high speed feed button 156 is determined (# 32, # 36, # 40). When the forward feed button 155 or the reverse feed button 155 is turned on, the film F is fed in the forward direction or the reverse direction by one frame (# 34, # 3).
8), and shifts to # 46. On the other hand, when the high speed feed button 156 is turned on, the film F is fed at a high speed in the required direction (# 42). If none of the buttons is operated, the film feeding is stopped (# 44) and the process proceeds to # 46.

In # 46, it is determined whether or not the zoom-up button 157 has been operated. If the zoom-up button 157 has been operated, the zoom-up signal is continuously output during that time (# 46-
# 50). Next, it is determined whether or not the zoom down button 158 has been operated, and if operated, the zoom down signal is continuously output during that time (# 52 to # 5).
6). At this time, the zoom-up and zoom-down signals are guided to the microcomputer 214 via the cable 3 and move the zooming lens 107 to the tele side or the wide side via the zoom drive section 211 (# 48, ## 54).

Subsequently, it is determined whether or not the rotation button 159 is turned on. When the rotation button 159 is turned on, the film cassette 4 is rotated 90 °, and the erecting of the film image is adjusted (# 60, # 62). ). Then, eject button 1
03 is turned on, and when it is turned on, high speed rewinding of the film F is automatically executed, and when the rewinding is completed, the lid 102 is opened (# 64-
# 68), the film cassette can be replaced. If the eject button 103 is not turned on, the process returns to step # 20 and the reproduction operation can be continued. When the lid 102 is opened, this opening signal is guided to the microcomputer 214 via the cable 3 and causes the power supply unit 221 to stop the power supply to each circuit unit (## 68).

Next, a second embodiment of the film image projection adapter according to the present invention will be described. FIG. 5 is an internal structural view of the film image projecting adapter of the second embodiment mounted on a television camera, FIG. 6 is a perspective view showing the mounting structure of both, and FIG. 7 is a plan view of a remote control operation unit. is there. The second embodiment basically has the same configuration as that of the first embodiment, except that the position of the film cassette loading portion, the structure of the lighting window portion, the mounting structure of the adapter body and the TV camera, and the remote control are controlled. The main difference is in the structure and control related to what is done on the TV camera side.

Explaining this difference, first, as shown in FIG. 6, the daylighting window 504 is rotatable about its lower side from the vertical posture, preferably up to 45 °, and the inner side surface thereof. A mirror-shaped lid 504a is provided. The lid 504a has a function as a lid by giving a required sliding friction or holding a closed state by a lock mechanism (not shown), and directly operating the upper side of the lid 504a or an operation button on the upper surface of the adapter body 500. A lock (not shown) or the like is pressed to release the lock, and the lock is opened by rotating it downward by its own weight or a biasing member such as a coil spring. By providing the lid 504a with an inclination of 45 °, for example, the light from the illumination lamp on the indoor ceiling can be effectively incident in the projection position direction from the light projecting window 504. Moreover, in order to obtain a suitable amount of illumination light, the inclination angle may be adjustable to a required angle.

The insertion opening 501 is for loading and unloading the film cartridge 4, and is provided on the upper surface of the adapter body 500 along with an openable / closable lid 502. The eject button 503 has the same function as that of the first embodiment.

The adapter main body 500 has a flat lower extension portion 500a on the rear side, and a required number of connections are made at appropriate positions on this surface and at positions corresponding to corresponding members on the side of the television camera 600 described later. A connector 522 having a pin group, an engagement hole 523 having a required diameter, and a pin 524 which is a positioning member.
Is provided. On the lower surface of the television camera 600, a connector 601 in which a group of connecting pieces with which the pin group of the connector 522 contacts is formed, and a tripod hole 623 in which a female screw is formed.
Also, a positioning hole 624 that fits into the pin 524 is provided. When the adapter body 500 and the television camera 600 are mounted, the tripod hole 623 and the engagement hole 523 are aligned with each other, and the pin 524 is fitted into the positioning hole 624. In this state, as shown in FIG. It is performed by screwing the bolt 7 into the tripod hole 623. By this mounting operation, the connectors 522 and 622 are automatically connected. 521 is a circuit board that electrically connects the connector 522 and the microcomputer 514.

Reference numeral 621 denotes a light receiving section which is arranged so as to be exposed at an appropriate place on the side surface of the television camera 600, and which receives instruction data from the light emitting section 651 of the remote controller operating section 650, and the received data is transmitted via the decoder 622 to the microcomputer 614. Is being led to.

Next, referring to FIG. 7, the remote controller operation unit 6
50 will be described. The remote control operation unit 650 has various operation buttons on the operation surface and a light emitting unit 121 including a light emitting element such as an LED on the front surface, and transmits instruction data to the light receiving unit 621 of the television camera 600.

The operation buttons will be described below. The start / stop button 652 is used to instruct switching between start and stop of recording / playback for each pressing operation. The tele button 653 and the wide button 654 are used for the zoom lens 9 of the TV camera 600.
07 is moved to the tele side or wide, and by this operation, the image of the frame is enlarged or reduced and displayed on the monitor.

Furthermore, the following buttons are provided as buttons to be operated during reproduction. The play button 655 is used to instruct the start of the reproduction operation. Fast forward button 657, rewind button 65
Reference numeral 8 denotes a film feeding instruction, which has various feeding modes as shown in Table 1 in relation to the ON / OFF state of the playback button 655. That is, if the fast-forward button 657 and the reverse-feed button 658 are subsequently turned on after the playback button 655 is turned on and then turned off, one frame is moved forward or backward one frame each time the button is operated. Sequential feed and one frame reverse feed are performed. With the play button 655 still on,
That is, when the fast-forward button 657 and the rewind button 658 are turned on at the same time, automatic forward feed and automatic reverse feed are performed in each direction at a speed three times the normal speed, while the play button 65 is used.
When the fast-forward button 657 and the rewind button 658 are turned on under the condition of no operation of No. 5, the high-speed feed, or the search forward feed and the search reverse feed at a higher speed are performed only during the pressing period. The above relationship is shown in Table 1.

[0045]

[Table 1]

A stop button 656 is used to instruct the stop of the reproducing operation, a pause button 659 is used to make a pause on the television camera 600, and a frame image is displayed on the adapter main body 500.
When the button 659 is pressed, the entire film cassette loading section is rotated 90 degrees around the optical axis 108, etc., as in the case of the first embodiment. The conversion of the above instruction data is performed by the microcomputer 514, and this relationship is shown in Table 2.

[0047]

[Table 2]

Next, the operation of projecting and reproducing the film image will be described with reference to the flowcharts of FIGS. 8 and 9.
In the figure, the left side of the alternate long and short dash line is the adapter body 50.
0 shows the procedure by the microcomputer 514, the right side shows the procedure by the microcomputer 614 of the television camera 600, and the arrow line between them shows the communication of various data performed via the wiring board 521.

First, when the adapter body 500 is attached to the television camera 200 and the microcomputer 514 and the microcomputer 614 are connected via the connectors 601 and 522, the television camera 600 is switched from the video reproduction mode to the film reproduction mode (S2). , S4). Then the power supply 62
1 is turned on (S6), and the zooming lens 107 is moved to set the film angle of view to a predetermined macro area (S8). When the power is turned on, the on signal is transmitted through the wiring board 521, the power source unit 518 is driven, and the power is turned on (# 100).

Subsequently, when the loading of the film cassette 4 is confirmed (# 102), the film information is read by the film information detecting means 512 and it is confirmed whether or not the loaded film has been developed (# 104). . If it is an undeveloped film, the lid 502 is unlocked and the film cassette 4 is urged to be ejected (# 106). If it is a developed film, next, whether it is a negative film or not based on the previously read film information. It is determined whether it is a positive film (# 10
8). In the case of a negative film, the determination signal is transmitted through the wiring board 521, the negative / positive changeover switch 617 is changed over, and the negative / positive inversion circuit 616 is turned on (S10).

When the microcomputer 514 detects the number of frames of the film from the film information (# 110), it starts film loading and sets the first frame to the projection position (# 112, # 114). After this set,
It is determined whether or not the image of the frame at the projection position is in the vertical position (# 116), and if it is in the vertical position, the film cassette loading section is rotated by 90 ° (# 118). Next, in # 120, the microcomputer 614
From the wiring board 521 to wait for the transmission data.

On the other hand, when the film low diffing is started in # 112, a signal indicating the start is sent to the wiring board 521.
And the video circuit 616 is turned on (S1).
2). When the video circuit 616 is turned on, it is subsequently determined whether or not recording in the recording / reproducing unit 618 is possible. If recording is possible, recording standby is performed (S16),
If not, the process proceeds to S18.

In S18, it is determined whether or not the reproduction button 655 is turned on. If not, it is determined whether the fast-forward button 657 or the reverse-feed button 658 is turned on (S20, S24). If the fast forward button 657 is on,
The search forward mode is executed, while the reverse button 658
If is on, the reverse search mode is executed (S
22, S26). If neither button is on,
The process proceeds to S48.

If the play button 655 is turned on in S18,
Next, it is determined whether or not the fast-forward button 657 is on (S
28). If the fast-forward button 657 is on, it is subsequently determined whether or not the playback button 655 remains on (S3
0) If it is already turned off, the one-frame forward feed is executed (S32), and if it is still on, the automatic forward feed is executed (S34). Also, in S28, the fast forward button 657
If is turned off, it is next determined whether or not the reverse feed button 658 is turned on (S36). If the reverse button 658 is on, it is then determined whether or not the playback button 655 is still on (S38), and if it is already off, one-frame reverse feed is executed (S40) and turned on. If it is left as it is, the automatic reverse feed is executed (S42). While automatic forward feed and automatic reverse feed (S34, S42) are being performed,
The film image is recorded in the recording unit 618 (S46). After the signals indicating the respective feeding modes are determined by the microcomputer 614 (S44), the wiring board 5
21 to be transmitted. The microcomputer 514 receives this mode determination signal (# 120), controls the motor 505 through the motor drive circuit 509 in a drive routine according to the corresponding mode, and performs film feeding (#
122).

On the other hand, in the television camera 600, none of the buttons 655, 657, 658 are turned on, and when the respective feeds are started, it is next determined in S48 whether the stop button 656 is turned on. And on,
The recording operation is stopped (S50). On the other hand, stop button 656
If is not turned on (NO in S48), the process returns to S14 and the operations of S14 to S46 are repeated. S48
Then, when the stop button 656 is turned on, the signal is transmitted through the wiring board 521, and when the microcomputer 514 confirms the stop, the film feed stop control is performed (# 124,
# 126).

As the film illuminating light, it is possible to adopt a method of illuminating with an internal light source instead of the method of utilizing external light. FIG. 10 is a cross-sectional view of the light source part showing this system, in which 130 is slightly below the optical axis 108 in the vertical direction,
An illumination light source such as a fluorescent lamp arranged horizontally in a direction orthogonal to the feeding direction of the film F, and a reflecting mirror 131 having an arcuate side cross section is parallel to the front thereof and the light source is provided by this reflecting mirror 131. The real image 130 ′ of 130 is arranged so that the optical axis 108 is formed symmetrically. Further, a condenser lens 132 is arranged in front of the light source 130 on the optical axis 108, and the irradiation light from the light source 130 is converted into parallel rays and the image pickup unit 2 is provided.
It leads to 10 shooting lens groups. 133 is a light source 130
Is a fluorescent lamp power source for controlling the lighting of the. In the above description, the light source 130 may be arranged on the optical axis, but as shown in FIG. 10, if the light source 130 is arranged slightly displaced from the optical axis, the reflected light from the reflecting mirror 131 will be on the optical axis. Therefore, it is possible to improve the brightness balance on the image pickup unit 210 side.

The AWB circuits 220 and 620 are arranged to detect the color temperature of external light and perform color correction on the reproduced image. However, the light transmitted through the image pickup lens of the image pickup section 210 is used as a reference, while the film image is read. The reference color may be corrected based on the white balance of the transmitted light in the white or gray portion of the above.

[0058]

As described above, according to the present invention,
A mounting member for mounting the adapter body on the television camera by aligning the projection opening and the projection position with the optical axis of the image pickup means of the television camera is provided, and reproduction instruction data from the operation unit is communicated between the adapter body and the television camera. Since it is a line that enables the data transmission member that can be brought into and out of contact with the television camera, it is possible to operate both the adapter body side and the television camera side simply by operating the operation unit, Operability is improved.

[Brief description of drawings]

FIG. 1 is an internal structure diagram in a state where a film image projection adapter according to the present invention is mounted on a television camera.

FIG. 2 is an overall perspective view showing a first embodiment.

FIG. 3 is a flowchart illustrating a film image projection and reproduction operation according to the first embodiment.

FIG. 4 is a flowchart illustrating a film image projection and reproduction operation according to the first embodiment.

FIG. 5 is an internal structural diagram of the film image projection adapter of the second embodiment mounted on a television camera.

FIG. 6 is a perspective view showing a mounting structure of an adapter body and a television camera according to a second embodiment.

FIG. 7 is a plan view of a remote controller operation unit of the second embodiment.

FIG. 8 is a flowchart illustrating a projection / reproduction operation of a film image according to the second embodiment.

FIG. 9 is a flowchart illustrating a film image projection and reproduction operation in the second embodiment.

FIG. 10 is a cross-sectional view illustrating an example when an internal light source is adopted.

[Explanation of symbols]

 3 cable 31 connector 4 film cassette 41 feeding opening 7 bolt 100,500 adapter body 104,504 lighting window 110,510 projection opening 111 mounting part 111a step part 114,514, 214,614 microcomputer 150,650 remote control operation part 521 wiring Substrate 522, 601 Connector 523 Engagement hole 524 pin 200,600 TV camera 210,610 Imaging unit 215,615 CCD 216,616 Video circuit 623 Tripod hole 624 Positioning hole

Claims (1)

[Claims] 1. A film image projection adapter having an image pickup means for picking up an image of a subject and allowing the adapter body to be attached to a television camera capable of playing back the picked-up image on a monitor based on a playback instruction. A film cassette loading section, a film feeding means for feeding the film from the loaded film cassette and feeding it to a projection position, and a projection opening for guiding a projected image of the film fed to the projection position to the imaging means. A mounting member for mounting the adapter main body on the television camera by aligning the projection opening and the projection position with the optical axis of the image pickup means, an operation section for giving a reproduction operation instruction, and the adapter for the reproduction instruction data. A file comprising a communication line between the main body and the television camera, the data transmission member being capable of coming into contact with and separating from the television camera. Image projection adapter.