JPH0576228B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a camera, and more particularly, to a camera comprising an imaging means and recording an image signal on a record carrier through a recording head based on an imaging signal obtained by the imaging means. Regarding the camera.

[Background technology]

Various proposals have already been made regarding the above-mentioned cameras, but in this type of camera, for example, a rotating magnetic disk or drum is used as a record carrier, and a concentric or annular shape is used as the record carrier. If a predetermined amount of image signals, for example, video signals for one field or one frame, are recorded on each recording track through the recording heads while forming recording tracks, unless a multi-head configuration is adopted, An arrangement is required to move the recording head relative to the record carrier.

On the other hand, in order to always obtain appropriate images for such a camera, a means for controlling the exposure state of the imaging means such as a shutter and an aperture is required. When adopting the above configuration, a movable mirror for selectively directing the image light beam from the photographing lens toward the imaging means and the viewfinder is also required.

In this way, this type of camera must be equipped with various and disparate operating devices and means depending on its configuration, but here we will explain each of these operating devices and means. If the energizing means and driving sources were arranged separately, the mechanism would be very large and complicated, making it difficult to make the camera smaller and smaller.
This will greatly hinder downsizing.

Furthermore, in terms of functions, this type of camera has a so-called single-shot function in which a photograph is taken once each time the release means is operated, as well as a so-called continuous photographing function in which a photograph is taken repeatedly as long as the release means is operated. Although there is a potentially strong demand for a photo function, in view of the structural problems mentioned above, it is difficult to provide a continuous shooting function in addition to a single shooting function. It will be difficult.

〔the purpose〕

In view of such circumstances, the present invention provides the above-mentioned camera equipped with a control means for controlling the exposure state of a movable recording head and an imaging means, by simplifying the structure of an energizing system for the recording head moving means and the energy storage means, The internal mechanisms are not large-scale or complicated, which greatly contributes to miniaturization and enables the above-mentioned single-shot and continuous-shot functions to be realized with simple means. The purpose is to provide a new camera configuration.

Furthermore, when recording to the final recording track on the record carrier is completed, an auxiliary force for operating the shutter control means is stored in the energy storage means regardless of whether the recording mode is single-shot imaging mode or continuous-shot imaging mode. To provide a new camera which does not waste power by turning off the power after the camera is used, and which can quickly perform photographing operations without malfunctioning when used next time.

[Explanation based on examples]

Hereinafter, the means taken in the present invention to achieve the above object will be illustrated and explained using Examples.

First, an example of a record carrier used in an embodiment of the present invention will be explained with reference to FIG.

In FIG. 1, reference numeral 1 denotes a flexible magnetic disk as a recording carrier, and a center core 2 is fixed to the center of the disk for connection with a driving spindle, which will be described later. The center core 2 is in pressure contact with the driving spindle at three surfaces 2a, 2b, and 2c of the five surfaces forming the pentagonal opening at the center, and a magnetic material is fixed to the back surface 2d. It is attracted by the magnet provided on the flange of the drive spindle. 2e is a magnetic pin for obtaining a rotational phase signal of one pulse per rotation.

Reference numeral 3 designates a cassette that rotatably stores the magnetic disk 1, and has openings 3a and 3 as shown in the figure.
It has b. Further, the cassette 3 is provided with positioning holes 3c and 3d for determining the loading position in the camera-side loading chamber. 3e is cassette 3
This is a write-inhibiting claw provided in the claw 3e.
The camera is constructed so that when the claw 3e remains, information can be written to the magnetic disk 1, and when the claw 3e is removed from the cassette 3, writing of information to the magnetic disk 1 is prohibited.

Reference numeral 4 designates a counter provided on the cassette 3, and has ratchet teeth 4a formed on its outer periphery, with which a locking portion 5 made of an elastic member meshes. This counter 4 is rotated by a predetermined angle (one ratchet tooth) when information is recorded on the magnetic disk 1 and the recording head is moved to the next recording position, as will be described later.
Therefore, the keyway 4c of the counter drive hole 4b indicates the recording track amount or remaining track amount of the magnetic disk 1 on a scale formed on the housing of the cassette 3 according to the phase indicated by the keyway 4c.

Incidentally, concentric recording tracks are formed on the magnetic disk 1 in this embodiment.

Next, FIG. 2 shows one embodiment of the present invention, in particular,
The main parts of the exposure system will be explained.

In Fig. 2, 11 is an example of an imaging means.
It is a CCD solid-state image sensor, and 12 is a shutter board. The shutter substrate 12 has an exposure opening 1.
2a is formed, and behind it is an image sensor 11.
However, the light receiving portion 11a is arranged to face the opening portion 12a. Reference numerals 13 and 14 denote shutter leading blades and trailing blades that run vertically in the figure with respect to the opening 12a on both sides of the shutter board 12, and are connected to shafts 15a, 16a and 17a, respectively.
The arms 15, 16 and 17, 18 are rotatably attached to the base plate 12 by 18a and are attached to the ends of arms 15, 16 and 17, 18, which together with the blades 13 and 14 constitute a parallel link mechanism. Also, arms 15 and 17
Springs 15c and 17c for running the blades are applied to the blades, respectively. 67 and 68 are attached to arms 15 and 17 by sucking suction pieces 15d and 17d attached to parts of arms 15 and 17, respectively.
7, and therefore the blades 13 and 14 in the illustrated state,
That is, it is a blade holding electromagnet that holds the springs 15c and 17c in a charged state, and is fixed on the shutter board 12, and both coils are wound around permanent magnets, and when each coil is energized, it becomes a permanent magnet. The suction force of the suction pieces 15d and 17 is eliminated.
A structure is used that releases d.

A shutter charge lever 19 is rotatably attached to the shutter board 12 by a shaft 19d, and its arm 19a engages with an arm 24e of a main drive lever 24, which will be described later. The pins 15b and 19c, which are implanted in the arms 15 and 17, respectively, are rotated in the clockwise direction.
7b, and charges the shutter blade traveling springs 15c and 17c mentioned above. Reference numeral 21 denotes a movable mirror for the viewfinder, and when not photographing (when observing a subject), as is well known, the light beam from a photographing lens (not shown) is reflected toward the viewfinder. Note that the mirror 21 is rotatable about a shaft 22. Reference numeral 21a denotes a mirror drive pin installed on the side of the mirror 21.

Reference numeral 23 denotes a substrate for supporting levers and the like for driving the mirror, which will be described later. The substrate 23 has a shaft 2
A main drive lever 24 biased counterclockwise by a spring 25 about 4a is rotatably pivoted by the shaft 24a, and a mirror drive lever 28 biased clockwise by a spring 29 Also axis 2
It is rotatably supported by the shaft 4a. The arm portion 28a of the mirror drive lever 28 engages with the mirror drive pin 21a described above, and its counterclockwise rotation causes the mirror 21 to rotate clockwise about the shaft 22. Reference numeral 30 designates a driving lever, which is rotatably supported by a shaft 30a implanted in the arm portion 24b of the main drive lever 24, and biased clockwise by a spring 31 to bend the driving lever 30. Part 3
0b is engaged with the stepped portion 28b of the mirror drive lever 28 in the charging completed state shown in FIG. Reference numeral 26 denotes a tension lever, which is rotatably supported by a shaft 26a implanted in the base plate 23 and biased clockwise by a spring 27.
In the state shown in FIG. 2, the tip step portion 26b is engaged with the arm portion 24c of the main drive lever 24 mentioned above. 3
Reference numeral 2 designates a mirror up release lever, and the release lever 32 is rotatably supported by a shaft 23a embedded in the base plate 23, and is biased clockwise by a spring 33, with one end 32b It engages with an end 62b of a mirror lowering control lever 62, which will be described later, and the other end 32c is formed so that it can engage with one end 30c of the entraining lever 30 when the mirror 21 is in the up position. Furthermore, the board 23 has a shaft 3.
4a, and is rotatably supported by a spring 3.
A charge shaft lock release lever 34, which is biased counterclockwise at 5, is attached. One end 34b of the lever 34 is in contact with one end 60b of a charge shaft locking lever 60, which will be described later, and when the mirror 21 mentioned above rises, the one end 34c is pushed by the mirror drive pin 21a and rotates clockwise. It is configured to do so. 20, when the mirror 21 is completely raised, the contact piece 20a is pushed by the pin 21b implanted on the side of the mirror 21, and the contact piece 2
This is a switch that generates a mirror raising completion signal when it comes into contact with 0b.

Reference numeral 36 denotes a substrate, and the substrate 36 is provided with an electromagnet 37 for starting the raising of the mirror, etc. The electromagnet 37 is composed of a permanent magnet 37a and a coil 37b, and is configured so that the attractive force of the permanent magnet 37a is canceled by energizing the coil 37b. 38 is a charge lever, and the charge lever 38 is connected to a shaft 38 embedded in the base plate 36.
During charging, the tip 38b is pressed against a pin 56c of a main charge lever 56, which will be described later, thereby causing the charge lever 38 to rotate counterclockwise. Note that 38b is the arm portion 24d of the main drive lever 24.
It seems to be engaged with both. 41 is the start
The start lever 41 is rotatably supported by a shaft 41a embedded in the base plate 36;
Further, it is biased clockwise by a spring 42, and a suction piece 43 that is attracted to the electromagnet 37 described above is mounted on one end 41d. Furthermore, the second
In the state shown in the figure, the attraction piece 43 is attracted to the electromagnet 37. Furthermore, the arm portion 41b of the start lever 41 is adapted to engage with a pin 38c implanted in the charge lever 38, and the arm portion 41c is engageable with one end 26c of the tension lever 26. It's summery. Reference numeral 39 denotes an aperture operating lever, and the aperture operating lever 39 is connected to a shaft 39 embedded in the base plate 36.
a, and is rotatably supported by a spring 40.
The rising portion 39c at one end is energized counterclockwise by the arm portion 28 of the mirror drive lever 28.
It is engaged with c. As is well known, the falling portion 39b of the aperture operating lever 39 narrows down the aperture installed in a photographic lens (not shown) to a predetermined value.

Reference numeral 51 designates a motor as a drive source for energizing a recording head moving mechanism to be described later and for charging each of the aforementioned mechanisms.The driving force of the motor 51 is transmitted to a gear 53 via a gear train 52. 54
A charge shaft is rotatably supported by a substrate (not shown), and the above-mentioned gear 53, cams 55, 57, 58, and 59 are integrally connected to the charge shaft 54. Reference numeral 56 denotes a main charge lever, which is rotatably supported by a shaft 56a and biased counterclockwise by a spring (not shown), and a cam follower implanted in the lever 56. - The pin 56b is configured so as to be in constant contact with the cam 55. Further, a pin 56c is implanted at the tip of the main charge lever 56, and this pin 56c is connected to the arm 38b of the charge lever 38.
come into contact with. Note that the cam 55 rotates clockwise,
When the main charge lever 56 is also rotated clockwise, the charge lever 38 is rotated via the pin 56c.
is rotated counterclockwise.

60 is a charge shaft locking lever;
is rotatably supported by a shaft 65 and biased clockwise by a spring 61, and its distal end locking portion 60a is pressed against the outer periphery of the cam 57. Further, the tail end 60b is connected to the release lever 34 described above.
It is in contact with one end 34b of. Furthermore lever 60
A switch operation pin 60c is implanted near the tail end of the switch, and operates the contact pieces 63a and 64a of the switches 63 and 64 as described later. Reference numeral 57 denotes a cam fixed to the aforementioned charge shaft 54. The cam 57 is provided with a recess 57a, and as shown in FIG. 60a falls into the recess 57a, and the charge shaft 54 is locked. 62 is a mirror lowering control lever rotatably supported by a shaft 65, like the charge shaft locking lever 60 described above, and one end 62a of the lever is pressed against a convex portion 58a of a cam 58 provided on the charge shaft 54. The other end 62b is connected to the arm 32b of the lever 32.
is in contact with. Reference numeral 59 denotes a cam attached to the charge shaft 54, and during its rotation, the protrusion 59a of the cam 59 presses an arm 131b of a pawl drive lever 131 that constitutes a head moving mechanism to be described later.
The lever 131 is rotated counterclockwise about the shaft 131a in FIG. 2. Reference numeral 66 denotes a counter drive shaft interlocking lever, and this lever 66 is connected to the phase of the keyway 4c of the counter 4 of the cassette loaded in the camera (FIG. 1) and the tip boss portion 126a of the camera side counter drive shaft 126 as described later. If the phase of the key 126b (FIG. 4) provided in
Axis 126 is to the left in Figure 2 (to the right in Figure 4)
By protruding, the tip protrusion 66b is pushed and rotated counterclockwise about the shaft 66a. A pin 66c is implanted at the other end of the lever 66, and when the lever 66 is rotated counterclockwise, the pin 66c presses the one end 60b of the charge shaft locking lever 60, causing the lever to move. 60 forcibly rotated counterclockwise. Therefore, even if the tip locking portion 60a of the lever 60 falls into the recess 57a of the cam 57 as shown in FIG. 2, their engagement is released. 63 and 64 are switches operated by the pin 60c of the lever 60;
and 64, as shown in FIG. 3a, when the end locking portion 60a of the lever 60 falls into the recess 57a of the cam 57, the switch 63 is on and the switch 64 is off, and the locking portion 60a is removed from the recess 57a. When the switch 63 is disconnected, the switch 63 is turned off and the switch 64 is turned on.

In addition, in Fig. 2, 101 indicates the disk and head.
The drive unit and 102 indicate a disk rotation motor, which will be described in detail later.

The operation of the exposure mechanism shown in FIG. 2 will now be explained with further reference to FIGS. 3a and 3b.

The electromagnet 37 is in the charging completed state shown in FIG.
When the coil 37b is energized, the attraction of the attraction piece 43 is released, and the start lever 41 is rotated clockwise by the force of the spring 42, and at this time, the arm 41c moves the tension lever 26 counterclockwise. direction. This rotation causes the stepped portion 2 of the tension lever 26 to
6b and the tail end 24c of the main drive lever 24 is released, and the main drive lever 24 is rotated counterclockwise by the biasing force of the spring 25. At this time, the arm 24b releases the pressure on the arm 19a of the shutter charge lever 19. Also, at this time, the stepped portion 28b of the mirror drive lever 28 and the bent portion 30b of the entraining lever 30 remain engaged, so the mirror drive lever 28 rotates counterclockwise together with the main drive lever 24. , the mirror 21 is rotated and raised via a pin 21a implanted in the mirror 21. On the other hand, the aperture operating lever 39 is rotated clockwise by the arm 28c of the mirror drive lever 28, and at this time, the aperture in the photographing lens (not shown) is predetermined at the falling portion 39b, as is well known. Narrow down the search until you reach the desired value. By the counterclockwise rotation of the main drive lever 24, the shutter charge lever 19 is released from the pressure on its arm 19a by the arm 24e of the lever 24, and the arms 15 and 17 are thereby released. , i.e., the rotation of the blade 13
and 14 can be taken.

When the mirror 21 further rotates upward and reaches its final stop position, at this time, the pin 21a
As a result, the charge shaft locking lever 60 is rotated counterclockwise via the charge shaft locking release lever 34, and the engagement between the locking portion 60a and the recessed portion 57a of the cam 57 is released. At this point, switch 63 is off and switches 64 and 20 are on.

Next, the arm 15 is released by energizing the coil of the electromagnet 67 in synchronization with the reading cycle of the output from the image sensor 11, and the shutter leading blade 1 is released.
3 is made to run by the force of the spring 15c, and after a predetermined time, the coil of the electromagnet 68 is energized and the arm 17 is released, causing the rear shutter blade 14 to run by the force of the spring 17c. As a result, the image sensor 11 is exposed to light.

When the exposure of the image sensor 11 is completed and the recording of one field or one frame worth of video signals on the magnetic disk 1 based on the output is completed, the motor 51 starts to be energized as described later, and the charge shaft 54 is rotated clockwise. As the charge shaft 54 rotates, the tip 62a of the mirror lowering control lever 62 is first pressed by the convex portion 58a of the cam 58, as shown in FIG. 3b. , clockwise, and at this time, the mirror up release lever 32 is rotated counterclockwise in FIG. 2 at its end 62b. This rotation causes the lever 32 to push down the one end 30c of the entraining lever 30 through its end 32c and rotate the lever 30 counterclockwise, thereby causing the bent portion 30b of the lever 30 and the mirror drive lever 28
The engagement with the stepped portion 28b is released. Accordingly, the mirror drive lever 28 is rotated clockwise by the biasing force of the spring 29, thereby returning the mirror 21 to the position shown in FIG.

On the other hand, since the mirror drive lever 28 rotates clockwise, the aperture operating lever 39 is also returned to the position shown in FIG. 2 by the biasing force of the spring 40.

The rotation of the motor 51 continues and the charge shaft 5
During approximately the first half rotation of 4, the head moving mechanism is energized by the cam 59 as will be described later. Then, when the charge shaft 54 rotates approximately half a turn further and makes exactly one revolution, the state shown in FIGS. 2 and 3a is reached, and the motor 51 stops. Main charge lever 56
is rotated clockwise and its pin 5
6c, the charge lever 38 is rotated counterclockwise, and its tip 38b pushes the arm 24d of the main drive lever 24, and the pin 3
8c, the start lever 41 is pushed on its side and reset to the state shown in FIG. 2, respectively.
That is, the start lever 41 is rotated counterclockwise so that its attracting piece 43 is attracted to the electromagnet 37, while the main drive lever 24 is rotated clockwise, as shown in FIG. At the position shown in FIG. The curved portion 30b comes to engage with the stepped portion 28b of the mirror drive lever 28, and furthermore, at this time,
The spring 25 becomes charged. At the same time, the arm 19a of the shutter charge lever 19 is pushed by the arm 24e of the main drive lever 24 and rotated clockwise.
Arms 15 and 17 by pressing pins 15b and 17b through 9b and 19c, respectively.
is rotated counterclockwise, thereby shutter blades 13 and 14 and arms 15, 16 and 1
7 and 18 are reset to the second illustrated position, and at this time springs 15c and 17c become charged.

As can be understood from the above description, in this embodiment, the shutter units 12 to 19 or the movable mirror 21 and the levers 2 for operating it are
4, 28, etc., or an aperture operating lever 39 (not shown) that operates the aperture in the photographing lens, and levers 24, 28, etc. that drive this lever constitute an operating means for controlling the exposure state of the image sensor 11. , At that time, the shutter blades 13, 14 and the spring 15 for running
c, 17c, or the spring 25 hooked on the main drive lever 24 constitutes an energy accumulating means. Also, 51~
Elements 56 and 59 actuate a head moving mechanism to be described later, and constitute an energizing mechanism for accumulating energy in the energy accumulating means, in which case the motor 51 constitutes a driving source.

Next, referring to FIG. 4, the disk and head drive unit 10 including the head moving mechanism will be explained.
Let me explain about point 1.

In the figure, reference numeral 105 denotes a recording magnetic head, which is brought into contact with the magnetic disk 1 described above.
The magnetic head 105 is inserted into the hole 1 of the carriage 106.
06c, and the carriage 106
The disk is moved toward the center of the disk rotation spindle 103. Incidentally, the spindle 103 is connected to the rotating shaft of the disk rotation motor 102 shown in FIG. A permanent magnet 104 is attached. A rail 107 has a V-groove for guiding the carriage 106, and faces the V-groove provided on the side of the carriage 106 via a ball 108. A return spring 110 is hung on the carriage 106 via an arm member 109, and a cam follower 111 provided on the arm portion 106a of the carriage 106 is connected to a cam 1 to be described later.
A biasing force is applied to press the cam surface of 22.

121 is a ratchet wheel having ratchet teeth on its outer periphery; a cam 122; a cylindrical member 12;
3. Pinion gear 124 and pulley 12
5, and is rotatably disposed on the substrate of the disk and head drive unit 101 (FIG. 2). 126 is a counter drive shaft, and a key 126b formed on the boss portion 126a is fitted into a slit 123a provided in the cylindrical member 123 described above, and also fitted into a keyway 4c of the counter 4 of the cassette 3. It's becoming possible. In addition, counter drive shaft 1
26, the central shaft portion of which is the aforementioned ratchet wheel 121.
The tail end reaches the back side of the pulley 125 and is movable in the axial direction. still,
The drive shaft 126 is connected to the cylindrical member 123 by a spring 127.
The spring 127 is biased towards the open end side of the spring 127, that is, to the left in the figure (in the protruding direction), and is prevented from coming off by a non-illustrated retaining member against the biasing force of the spring 127. Therefore, the drive shaft 126 is connected to the key 1
26b and the keyway 4c of the counter 4 on the cassette 3 side
When the phases do not match, the spring 127 is pushed to the right, and when the phases meet, the spring 1
The key 126b and the key groove 4c are engaged with each other by an acting force of 27. Counter drive shaft interlocking lever 66 in Fig. 2
responds to such axial displacement of the drive shaft 126.
128 is connected to the pulley 12 via the wire 129
5. Therefore, it is a spring that applies a clockwise biasing force to the ratchet wheel 121. Incidentally, at the time of resetting, which will be described later, the pin 121a installed in the ratchet wheel 121 comes into contact with the stopper 139 and is regulated.

A slide plate 140 is guided by a shaft 141 in the elongated hole and is movable in the direction of the elongated hole, and a part thereof has a rack portion 140b that meshes with the aforementioned pinion gear 124. Carriage 10
It has a carriage anti-vibration pin 140a that fits into an elongated hole 106a provided in 6. As will be described later, when the ratchet wheel 121 rotates counterclockwise, the slide plate 140 moves downward in FIG.

Reference numeral 131 designates a pawl drive lever, which is biased counterclockwise around a shaft 131a by a spring 132, and has a feed pawl 135 rotatably supported on a shaft 135a at one end thereof. ing. Note that 136 is a spring that biases the feed pawl 135 in the counterclockwise direction, and 133 is a spring that biases the pawl drive lever 13.
1 is a stopper for the feed claw 135, and 134 is a stopper for the feed claw 135. Further, the other end of the pawl drive lever 131 is formed as a bent portion 131b, and is connected to the charge shaft 5 described in FIG.
4 is driven by the motor 51 to make one rotation clockwise, the bent portion 131b is pressed by the cam 59 and rotated clockwise about the shaft 131a,
The ratchet wheel 121 is rotated counterclockwise via the drive pawl 135. 137 is a locking pawl, which is attached to the shaft 13.
It is rotatably supported by a shaft 7a and biased counterclockwise by a spring 138, and is locked by engaging with the ratchet teeth of the ratchet wheel 121.

Here, the cam 122 corresponds to the feed amount of one tooth of the ratchet wheel 121 by one rotation of the charge shaft 54.
If the cam lift amount is set to be one track pitch on the magnetic disk 1, the head 105 will be moved one track pitch each time the cam 59 rotates once.

Reference numeral 142 denotes a reset lever, which is rotatable around a shaft 142a, and a pin 142b formed at one end of the lever is linked to, for example, opening the cassette loading chamber cover of the camera, or removing the cassette 3. engaging the lowering operating member 146;
Further, the other end 142c is engaged with a protrusion 143c of the locking claw release lever 143. Locking claw release lever 1
43 is guided by a shaft 143a in the elongated hole, and is movable in the vertical direction in the figure, and a pin 143b implanted therein is connected to one end 13 of the locking pawl 137.
7b. Reference numeral 144 denotes a drive claw release lever, which is rotatable around a shaft 144a and biased counterclockwise by a spring 145. Normally, a pin 144b implanted at one end of the lever releases the locking claw 137. The terminal end 143d is pressed.
In addition, the pin 1 implanted in the drive claw release lever 144
44c can engage with the drive claw 135.

147, when the head 105 is further moved by one track pitch beyond the final recording position within the predetermined recording area on the disk 1, the contact piece 147a is moved by the pin 121a of the ratchet wheel 121.
This is an end detection switch disposed so as to be turned off when the switch is separated from the contact piece 147b.

The operation of the disk and head drive unit 101 including the head moving mechanism having the above configuration is as follows.

First, the cassette 3 shown in FIG. 1 is loaded into a cassette loading chamber (not shown) formed close to the top of the head carriage 106. At this time, a cassette loading detection switch, which will be described later, is turned on and the Center of magnetic disk 1 in cassette 3
The core 2 is fitted into the disk drive spindle 103 in its center hole until its back surface abuts and is regulated by the flange portion 103a of the spindle 103, and is mounted. At this time, the magnetic material attached to the back surface of the center core 2 is attached to the flange portion 103.
It is attracted to the permanent magnet 104 attached to a,
Further, the head 105 enters the opening 3a of the cassette 3 and comes into contact with the disk 1. Also, this cassette 3
As the cartridge is loaded, the operating member 146 releases the pin 142b of the reset lever 142.

When the cassette 3 is loaded into the camera as described above, the ratchet wheel 121 is in the reset position shown, and therefore the carriage 106 and the head 10 are
5. The slide plate 140 and the carriage anti-vibration pin 140a attached thereto are also in the reset position shown. Also, at this time, if the keyway 4c of the counter 4 of the loaded cassette 3 and the key 126b of the counter drive shaft 126 are not in phase, the drive shaft 126 will be pressed by the key 126b on the lower surface of the counter 4. As a result, it is pushed to the right against the spring 127. As a result, the counter drive interlocking lever 6
6 is rotated counterclockwise, and at this time, the second
In the figure, the charge shaft locking lever 60 is rotated counterclockwise by the pin 66c, and the lever 6
The locking of the cam 57 and, therefore, the locking of the charge shaft 54 by the locking portion 60a of 0 is released. Further, the rotation of the lever 60 at this time turns off the switch 63 and turns on the switch 64. When a power switch, which will be described later, is turned on in this state, the charge motor 51 shown in FIG. 2 is energized, and the charge shaft 51 is rotated clockwise in FIG. 2. Then, when the charge shaft 54 is rotated clockwise, the claw drive lever 131 is pushed by the bent portion 131b by the cam 59 attached to its tip during approximately half a rotation in the first half, and is rotated clockwise. As a result, the feed pawl 135 attached to the tip of the lever 131 rotates the ratchet wheel 121 counterclockwise by one ratchet tooth. As a result, the head and carriage 106 are moved to the right in the figure by the cam 122 by a cam lift amount corresponding to one tooth rotation of the ratchet wheel 121.
As a result, the head 105 is moved, for example, from the reset position to a position corresponding to the first recording track within a predetermined recording area of the disk 1. The ratchet wheel 121 is rotated by one ratchet tooth by the drive pawl 135 and is held in place by the locking pawl 137.

On the other hand, with the rotation of the ratchet wheel 121, the counter drive shaft 126 is also rotated integrally with it, and at the movement position of the head 105, its key 126b and the keyway 4c of the counter 4 of the cassette 3 are rotated. When the phases match, the boss portion 126a and the key 126b fit into the hole 4b and the key groove 4c of the counter 4 under the action of the spring 127 and become engaged. If the phase of the keyway 4c of the counter 4 and the key 126b of the drive shaft 126 does not match because the disk 1 has already recorded up to an area in the middle, the interlocking lever 66 and therefore the locking lever 60 are still Since the switch 63 is in the state of being rotated counterclockwise, the switch 63 remains off, which causes the motor 5 to turn off.
1 is maintained, and the motor 51 continues to rotate. During this period, when the motor 51 rotates, the exposure mechanism explained in FIG. It has no effect on the exposure mechanism. By the rotation of the cam 59 caused by the rotation of the motor 51, only the stepwise feeding of the head 105 and the indexing rotation of the counter drive shaft 126 are performed as described above.

In the above manner, the head 105 is fed incrementally and the counter drive shaft 126 is indexed and rotated so that the phase of the key 126b of the drive shaft 126 matches the phase of the keyway 4c of the counter 4 on the cassette 3 side. At this point, the drive shaft 126 is displaced to the left in FIG. 4 due to the acting force of the spring 127, and its boss portion 126a and key 126b come to fit into the drive hole 4b and key groove 4c of the counter 4. . As the drive shaft 126 is displaced at this time, the interlocking lever 66 rotates clockwise in FIG.
Charge shaft locking lever 60 with its pin 66c
The pressure on one end 60b of is released. As a result, the locking lever 60 locks the concave portion 57a of the cam 57 with its tip locking portion 60a under the action of the spring 61, and therefore, the charge shaft 54 is locked. Also, at this time, the switch 63 is turned on, thereby stopping the motor 51. In this case, after the above head feeding and counter drive shaft indexing rotation by the cam 59 are completed, the recess 57a of the cam 57 is removed.
The mutual mounting angle of the cams 57 and 59 on the charge shaft 54 or the locking portion 60a of the lever 60 is such that the cams 57 and 59 face the locking portion 60a of the lever 60.
The location is determined.

When the rotation of the charge shaft 54 is stopped as described above, the head 105 faces the unrecorded track immediately after the recorded track on the disk 1. Therefore, when the camera is released in this state, the exposure mechanism operates as described above to expose the image sensor 11, and then one field is captured based on the image signal obtained from the image sensor 11. The video signal for 1 minute or 1 frame is sent to head 1.
05, the data is recorded on the unrecorded track on the disk 1. Incidentally, when recording one field or one frame of a video signal conforming to the NTSC system, the disk 1 is rotated by the motor 102 at 3600 rpm (field recording) or 1800 rpm (frame recording).

As described above, when exposing the image sensor 11, as shown in FIG. 60 is rotated counterclockwise to release the locking of the cam 57 by the locking portion 60a, the motor 51 is started at the same time as the recording of the video signal onto the magnetic disk 1 is completed, according to the configuration described later. Then, the charge shaft 54 is rotated clockwise. As previously explained with reference to FIG. 2, first, the mirror lowering control lever 62 is rotated clockwise by the cam 58, and thereby the mirror raising release lever 32 is rotated counterclockwise. Therefore, the mirror 21 is lowered. Then, during approximately the first half rotation of the charge shaft 54, the pawl drive lever 131 is actuated by the cam 59 as described above, and the head 105 is moved to the next track position and the counter 4 is stepped as described above. . Then, during approximately the second half rotation of the charge shaft 54 in FIG. 2, the main charge lever 56 is rotated clockwise by the cam 55, and the exposure mechanism is charged or reset as described above. . Of course, as mentioned above, when the charge shaft 54 has made exactly one rotation,
The charge shaft 54 is locked by the locking portion 62a of the locking lever 62 engaging with the recessed portion of the cam 57, and at this time, the motor 51 is also stopped by turning on the switch 63.

In this way, during one rotation of the charge shaft 54, the head feeding mechanism is energized during approximately the first half rotation, and the exposure mechanism is charged or reset during approximately the subsequent half rotation. This configuration is effective in distributing the load on the motor 51, thereby reducing its torque, extending its life, and reducing its power consumption.

Further, by repeating the recording operation as described above, recording on the last track in a predetermined recording area on the disk 1 is completed, and then, when the head 105 is moved to a further track position,
At this point, the end detection switch 147 is turned off by the pin 121a of the ratchet wheel 121, and then the charge shaft 54 rotates exactly once and is locked by the locking lever 60, and the switch 6 is turned off.
4 is turned off, power is cut off to all circuits of the camera, and the camera stops operating, regardless of whether the power switch is turned on, as will be described later.

Also, when the lid of the cassette loading chamber is opened or the cassette 3 is taken out to take out the cassette 3 from the camera, at this time, the operating member 146 in FIG.
To lower the reset lever 142, the reset lever 142 is rotated counterclockwise. As a result, the locking claw release lever 143 is raised so that its pin 1
43b rotates the locking pawl 137 clockwise to release it from the ratchet wheel 121, and the drive pawl release lever 144 is rotated clockwise as the lever 143 rises, so its pin 144
c, the drive pawl 135 is rotated clockwise to separate it from the ratchet wheel 121. When the counter 4 is disengaged from the counter drive shaft 126 by taking out the cassette 3, the ratchet wheel 121 becomes free and the pin 121a is moved to the stopper 139 by the action force of the spring 128.
The counter drive shaft 126 is rotated clockwise together with the counter drive shaft 126 until it is regulated by colliding with the counter drive shaft 126 and returned to the reset position. Also, at this time, pinion gear 12
4 is also rotated clockwise, the slide plate 140 is raised, and therefore the head carriage 106 is also rotated clockwise by the action of the spring 110.
2 and pin 140a.

Next, the electric circuit system of the camera having the above mechanical configuration will be explained with reference to FIG.

In the figure, 201 is an imaging signal processing circuit (video processing circuit) that processes the imaging signal output from the imaging device 11 in a well-known manner, and 202 modulates the video signal output from the imaging signal processing circuit 201. ,
A recording processing circuit 203 processes the recording signal for recording, a gate circuit 204 gates the recording signal output from the recording processing circuit 202, and 204 gates the recording signal gated by the gate circuit 203 to the head 10.
5 is a recording amplifier for recording on the magnetic disk 1; 205 is a timing signal generation circuit that generates various vertical and horizontal synchronization signals or timing signals; its output is sent to the processing circuits 201 and 202; granted. In addition, here 202-20
The circuit indicated by 5 constitutes a recording means together with the head 105. 206 is a timing signal generation circuit 2
207 is a second illustrated switch 20;
Timing signal generation circuit 205 in response to turning on of
This is a timing control circuit that controls the shutter operation timing and signal recording timing based on the vertical synchronization signal V _D from the gate circuit 203 and the charge motor 5 described later.
1, a motor control circuit for the disk rotation motor 102, and a shutter control circuit. 208 is the output of the timing control circuit 207, the second illustrated switch 63
The above-mentioned charging signal is based on the output of the inverter, which will be described later, whose output changes from high to low when turned on, and the power up clear signal PUC1, which is output from the first power up clear circuit, which will be described later, when the power is turned on. A motor control circuit 209 controls the operation of the motor 51, and 209 is the motor control circuit 20.
This is a motor drive circuit that drives the motor 51 under the control of the motor 8. Note that 210 and 211 conceptually represent the exposure system charge mechanism and head moving mechanism, respectively, which are energized by the motor 51 described in FIGS. 2 and 4. 212 is a motor control circuit for controlling the rotation of the disk rotation motor 102, which receives an FG signal (rotation tach signal) from the motor 102.
and a rotational phase detector 213 that generates one pulse per rotation of the disk 1 by detecting the magnetic pin 2e provided in the center core 2 of the disk 1.
The output of the above timing signal generation circuit 205
The motor 102 is controlled based on the vertical synchronization signal V _D from the motor 102 (that is, it has a speed servo and a phase servo) so that the disk 1 is rotated at 3600 rpm (or 1800 rpm) and at a predetermined phase as described above.

214 is a battery as a power source; 215 is the aforementioned cassette loading detection switch that is turned on in response to loading of the cassette 3;
The power supply battery 214 is connected to the power supply battery 214 through a parallel connection circuit. 216 is a battery switch connected in series to the detection switch 215; 217 is a switching circuit for controlling power supply to required circuits;
Reference numeral 218 is a falling synchronization type RS-flip-flop that controls the switching circuit 217, and 219 and 220 turn on the power in response to turning on the power switch 216 and turning on the switching circuit 217, respectively.
first and second power up clear circuits outputting up clear signals PUC1 and PUC2;
221 is the first power up clear circuit 21
222 is an AND gate that receives the output of the delay circuit 221 and a signal that becomes high when the switch 63 is turned on;
3 receives the output of the AND gate 222 and the output of an inverter to be described later whose output changes from high to low when the switch 63 is turned on.
Gate V, its output is the flip-flop 2 above.
18 set inputs S. The flip-flop 218 is configured to be reset by a power-up clear signal PUC1 from a first power-up clear circuit 219, and the switching circuit 217 It is connected so that it is turned on when the Q output of 218 is high.

225 is a release switch turned on by operating a release button (not shown); 224 and 226 are switches 63 and 226 whose output changes from high to low in response to a change from off to on of the switches 63 and 225, respectively; With the connected inverter,
The output of the inverter 224 is the motor control circuit 2
08 and flip-flop 218, and the output of inverter 226 is applied to a trigger input of a D-flip-flop, which will be described later. 227 receives the potential at the connection point between the switch 63 and the resistor connected to it at its D input, and also connects the inverter 2
26 is a falling synchronous D-flip-flop connected to be triggered by the falling edge of the output of switch 2; 228 is a clear signal PUC2 from the second power up clear circuit 220 and switch 2;
The OR gate receives the potential at the connection point between the flip-flop 25 and the resistor connected thereto, and its output is applied to the reset input R of the flip-flop 227. 2
29 is the output of the inverter 224 and the switch 22
An AND gate 230 is connected to receive the potential at the connection point between 5 and the resistor connected thereto, and an AND gate 230 grounds the output of the AND gate 229 in the single shooting mode S, and in the continuous shooting mode. A mode changeover switch connected so as to be ungrounded at C, 231
is an OR gate connected to receive the output of the AND gate 229 and the output of the flip-flop 227. Note that the single shooting mode is a mode in which one shot is taken each time the release switch 225 is turned on, and the continuous shooting mode is a mode in which shooting is performed at a predetermined frame as long as the release switch 225 is turned on. This is a mode that repeats at high speed.

232, in response to the fall of the output of the OR gate 231, the permanent magnet 37a in the second illustrated electromagnet 37 is activated for a predetermined duration, that is, the permanent magnet 37a in the second illustrated electromagnet 37 is activated by the coil 37b.
The adsorption piece 43 of the lever 41 is energized by
233 is an excitation circuit that energizes the coil while the output of the one-shot circuit 232 is high; 234 is arranged, for example, in the well-known finder optical path; The exposure time is determined by a digital value based on the brightness signal from the TTL photometry element 235 and the digital preset aperture value data from the preset aperture data input circuit 236, and responds to the low output of the flip-flop 227. A well-known digital exposure time determination circuit 237 stores this information, and 237 is the timing signal generation circuit 207.
Timing signal from and exposure time determination circuit 23
A shutter control circuit that controls the travel timing of the second shutter leading blade 13 and the second shutter blade 14 based on the exposure time data from 4, and includes the coil 67a of the leading blade holding electromagnet 67 and the trailing blade holding electromagnet 67 shown in FIG. Controls energization of the coil 68a of the electromagnet 68.

In the above configuration, 51, 63, 208, 20
9, 218 and 221 to 224 are connected to the power supply battery 2 by turning on the power switch 216.
14 directly, i.e. the switching circuit 21
7, while 11, 2
0,102,201-207,212 and 225
The circuit elements indicated by 237 are switching circuits 21
It is connected so that it is supplied with power through 7. or,
The power up clear signal PUC2 from the second power up clear circuit 220 is applied to circuits shown as 205 to 207, 234, etc. in addition to the OR gate 228.

In particular, specific configurations of the timing control circuit 207, motor control circuit 208, and shutter control circuit 237 will be explained with reference to FIG.

First, the timing control circuit 207 includes three falling synchronized D-flip-flops 301, 302, and 303 connected in series and an AND gate 3.
It consists of 04. 3 flip flops 30
1 to 303 are all power up clear signals from the second power up clear circuit 220.
The flip-flop 301 is reset by the PUC 2 and is connected to be triggered by the fall of the vertical synchronization signal V _D from the timing control circuit 207, and the flip-flop 301 at the first stage is connected to the switch 20. It is connected so that its D input receives the potential at the connection point with the resistor. AND gate 304 is flip-flop 3 in the middle stage
02 Q output and final stage flip-flop 3
03, and the output is sent to the gate circuit 20.
3. In addition, flip-flop 302
The outputs of 303 and 303 are connected to the shutter control circuit 233.
and is given to the motor control circuit 208 as a timing control signal.

Next, the motor control circuit 208 connects the OR gate 31
1 and 314, a delay circuit 312, an AND gate 313, and a falling synchronous RS-flip-flop 311. The OR gate 311 receives the power up clear signal PUC1 from the first power up clear circuit 219 and the output of the inverter 224, and its output is a flip-up clear signal PUC1.
It is applied to the reset input R of the flop 315.
The delay circuit 312 delays the clear signal PUC1 by a small amount of time, the AND gate 313 receives the output of the delay circuit 312 and the output of the inverter 224, and the OR gate receives the output of the AND gate 313. The output from flip-flop 303 in timing control circuit 207 is applied to the set input of flip-flop 315. and the flip-flop 315
The Q output of is given to the motor drive circuit 209 as a control signal.

Next, the shutter control circuit 237 includes one-shot circuits 321 and 328, excitation circuits 322 and 32
9, an oscillation circuit 323, a counter 324, a digital comparator 325, an inverter 326, and an AND gate 327. One-shot circuit 321 outputs a single pulse in response to the falling edge of the output of flip-flop 301 in timing control circuit 207, and excitation circuit 322 responsively outputs a single pulse during the high period of this pulse. By energizing 67a, the shutter leading blade 13
Release the button. On the other hand, the counter 324 is reset by the high output of the flip-flop 301, and is enabled for counting by the low output, and counts the output clock of the oscillation circuit 323. Then, the comparator 325 converts the count value (A) of the counter 324 into the exposure time determining circuit 2.
34 output data (B), and when the two match (A=B), the "A=B" output is made high.
The "A=B" output is inverted by an inverter 326 and applied to an AND gate 327 receiving the output of flip-flop 302 in timing control circuit 207. As will be understood from the description below, the counter 324, comparator 325, and inverter 326 adjust the shutter speeds 13 and 1 based on the output data of the exposure time determining circuit 234.
Configure a circuit to control the opening time of 4, and at that time,
AND gate 327 is timing control circuit 20
Timing signal from 7 (flip-flop 3
This circuit constitutes a circuit that defines the long-term upper limit of the shutter open time to a period corresponding to one field of a video signal, that is, 1/60 second in this case, based on the output of 02. One shot circuit 328
outputs a single pulse in response to the fall of the output of the AND gate 327, and in response, the excitation circuit 329 energizes the coil 68a during the high period of this pulse, thereby increasing the shutter rear blade 1.
Release 4. Note that the one-shot circuits 321 and 328, like the one-shot circuit 224 in FIG.
The time constant etc. of No. 4 are selected so as to output a single pulse that maintains a high level for a period sufficient to release the attraction and holding by the permanent magnet.

Next, the operation of the electric circuit system having the above configuration will be further explained with reference to FIG.

First, when the cassette 3 is loaded into the camera, the detection switch 215 is turned on, and when the power switch 216 is turned on in this state (see FIG.
Power is supplied to circuit elements 15, 218, 219, 221 to 224, thereby causing the first power up clear circuit 219 to output a power up clear signal PUC1 as shown in FIG. 7b.
Then, by this clear signal PUC1, the flip
Flop 218, flip-flop 315 in motor control circuit 208, etc. are reset. Here, if the phase of the key 126b of the counter drive shaft 126 and the phase of the keyway 4c of the counter 4 of the cassette 3 do not match, the switch 63 is off, and the flip-flop 315 sends a clear signal.
After the delay time (Δt) by the delay circuit 312 has elapsed since the reset by the PUC1, it is set by its output and its Q output becomes high as shown in FIG. 7d. As a result, the motor drive circuit 209 starts the charging motor 51, and thus the head 105 is moved by the head moving mechanism 211 as described above.

As described above, the drive of the motor 51 is connected until the phase of the key 126b of the counter drive shaft 126 matches the phase of the keyway 4c of the counter 4 of the cassette 3 and the two are engaged. and drive shaft 1
When the key 126b of 26 and the keyway 4c of the counter 4 match in phase and engage, the switch 6, which had been off until then, is activated, as shown in FIG. 7c.
3 is turned on, the flip-flop 315 is reset and its Q output becomes low, as shown in FIG. 7d, so that the motor 51 is stopped. When the switch 63 is turned on, the flip-flop 218 is set and its Q output becomes high, as shown in FIG.
1,20,201-207,212,220,2
Power is now supplied to circuit elements 25 to 234. At this time, the second power up clear circuit 220 outputs the power up clear signal PUC2 as shown in FIG.
The circuits shown as 207, 227, 234, etc. are now reset. Therefore, the motor 102 starts rotating the disk 1, the imaging system is activated although in a non-exposure state, and the recording processing circuit 202 outputs a recording signal to the gate circuit 203. At this time, the timing signal generation circuit 205 outputs the vertical synchronization signal V _D to the timing control circuit 207 and the motor control circuit 212 as shown in FIG. 7g. Also, at this time, as shown in Figure 7i, the flip-flop 2
27 becomes high, the exposure time determining circuit 234 determines the appropriate exposure time based on the output of the photometric element 235 and the preset aperture value data from the aperture value data input circuit 236.

First, the operation in the single-shot mode S will be explained. In the single-shot mode S, the output of the AND gate 229 is grounded by the switch 230, and therefore the OR gate 231 is connected to the flip-flop. It will respond only to the output of 227.

In this state, when the release switch 225 is turned on by the release operation (Fig. 7h), the flip-flop 225 is turned on as shown in Fig. 7i.
27 is triggered and its output becomes low, which causes the exposure time determining circuit 234 to memorize or hold the determined exposure time at that point.
On the other hand, the one-shot circuit 232 to which the output of the flip-flop 227 at this time is applied through the OR gate 231 outputs a single pulse as shown in FIG. 7j in response to the fall of this output.
In response to this, the excitation circuit 233 starts to energize the coil 37b of the electromagnet 37. As a result, the aperture is narrowed down and the mirror 21 is raised as explained above with reference to FIG. The switch 20 is turned on as shown in FIG. 7k. And switch 2
0 turns on, the first-stage flip-flop 301 in the timing control circuit 207 is triggered by the fall of the vertical synchronizing signal V _D immediately after that, as shown in FIG. 7 l and m, and its Q output becomes The output changes from low to high and from high to low. Then, due to the fall of the output at this time, the one-shot circuit 3 in the shutter control circuit 237 is activated.
21 outputs a single pulse as shown in FIG. The blade 13 moves and exposure of the image sensor 11 is started.
Further, as the output of the flip-flop 301 becomes low, the counter 324 in the shutter control circuit 237 is also released from the reset state and starts counting the output pulses of the oscillation circuit 323. Then, the exposure time previously determined by the exposure time determining circuit 234 is shorter than 1/60 second, and therefore, before 1/60 second has elapsed after the flip-flop 301 is triggered. The count value A of the counter 324 is
4, the "A=B" output of the comparator 325 changes from low to high, and therefore the output of the inverter 326 changes from high to high as shown in FIG. In order to change to low, the output of AND gate 327 changes from high to low (at this point, the output of flip-flop 302 in timing control circuit 207 is still high, as shown in FIG. 7o). . As a result, the one-shot circuit 328 outputs a single pulse as shown in FIG. As explained in FIG. 2, the rear shutter blade 14 moves and
1 exposure is completed.

On the other hand, if the exposure time determined by the exposure time determination circuit 234 is 1/60 seconds or more, the timing control circuit 207 triggers the first stage flip-flop 301 and then outputs the next vertical synchronization signal.
V _D triggers the flip-flop 302 to change its Q output from low to high and from high to low as shown in FIG. 7n and o. Then, due to the change of the Q output from high to low at this time, the shutter control circuit 237 outputs an AND signal.
Since the output of the gate 327 changes from high to low, the one-shot circuit 328 outputs a single pulse as shown by the broken line in FIG. in the end,
In this case, the exposure time of the image sensor 11 is limited to 1/60 second. Incidentally, the broken line in FIG. 7s shows an example of the change in the output of the inverter 326 in this case.

Now, when the Q output of the flip-flop 302 becomes high, the output of the AND gate 304 in the timing control circuit 207 becomes high, as shown in FIG. When reading the image signal obtained by the image sensor 11 during the exposure period, a recording signal based on the read image signal is sent from the recording processing circuit 202 to the recording amplifier 204 via the gate circuit 203.
Eventually, the data will be recorded on one track of disk 1 through head 105. Thereafter, the flip-flop 303 in the timing control circuit 207 is triggered by the next vertical synchronization signal V _D and its output becomes low as shown in FIG. The output becomes low, which turns off the gate circuit 203 and ends recording.

On the other hand, when the output of the flip-flop 303 changes from high to low, the flip-flop 315 in the motor control circuit 208 is set as shown in FIG. 51 is activated, the head moving mechanism 211 moves the head 105 to the next track position, and the exposure system charging mechanism 212 charges the exposure mechanism. Then, when the charge shaft 54 makes exactly one revolution and the switch 63 is turned on as shown in FIG. 7c, the flip-flop 315 is reset as shown in FIG. 7d, and its Q output becomes low. Motor 51 is stopped. In this single-shot mode S, the output of the AND gate 229 is grounded by the switch 230, so the camera suspends operation in this state.

To perform the next photograph in this single-shot mode S, the release switch 225 may be turned off once and then turned on again. That is, when the release switch 225 is turned off, the flip-flop 227 is reset through the OR gate 228 and its output goes high again, which causes the exposure time determining circuit 231 to operate again to determine the appropriate exposure time. It becomes like that. And the release
When the switch 225 is turned on, the flip-flop 227 is triggered and its output goes low, which causes the exposure time determining circuit to
34 begins to store or hold the determined exposure time data, and at the same time, a single pulse is output from the one-shot circuit 232 to release the mirror 21. On the other hand, at this time, in the timing control circuit 207, the flip-flops 301 to 303 all have their Q outputs set to low due to the switch 20 being turned off as the mirror 21 is reset by the rotation of the charge motor 51. is high. Therefore, when the mirror 21 rises and the switch 20 is turned on again as described above, the shutter blades 13 and 1 are turned on by the above-described operation.
4. Travel timing control and gate circuit 20
3 on/off control. As described above, upon completion of recording, the charging motor 51 is activated to reset the mirror 21, move the head 105 to the next track position, and charge the exposure mechanism thereafter. .

On the other hand, in continuous shooting mode C, switch 23
0 causes the output of AND gate 229 to be ungrounded, causing OR gate 231 to respond to both the output of flip-flop 227 and the output of AND gate 229. That is, as described above, when the camera completes preparations for the next photograph and the release switch 225 is turned on while the switch 63 is on, the flip-flop 227 is triggered as described above. When the output changes from high to low, the camera is released and a picture is taken.
If the switch 225 is kept on, the charging motor 51 will be activated after the first photograph has been taken, and the mirror 21 will be reset as described above.
When the head 105 is moved to the next track position and the exposure mechanism is charged, the switch 63, which was turned off at the time of release, is turned on, as shown in FIG. 7c, at a point in FIG. 7i. As shown by the chain line, the output of the AND gate 229, which went high when the switch 63 was turned off, changes to low, and at this point, the Q output of the flip-flop 227 remains low, so the OR gate is turned off. 23
1's output changes from high to low, which retrigger the one shot circuit 232 and cause the camera release to occur again. This operation continues as long as the release switch 225 is kept on, and photography is thus performed in continuous shooting mode C. Incidentally, the dash-dotted lines in FIG. 7 indicate the input and output of each circuit in this continuous shooting mode C.

Of course, if the release switch 225 is turned off during the process, the current shooting will be completed, and the camera will stop with the above-mentioned preparations for the next shooting completed.

Incidentally, in this continuous shooting mode C, since the output of the flip-flop 227 remains low, the exposure time is fixed to the value determined at the time of the first photographing. Further, in this case, the frame speed, that is, the number of shots per unit time, is determined exclusively by the rotational speed of the motor 51 and the time required for the operation of the mechanism. Therefore, in this case,
For example, the rotation speed of the motor 51 may be made variable to make the frame speed during continuous shooting variable.

It should be noted that if the power switch 216 is turned off while the motor 51 is stopped, the camera will be powered off in a state where preparations for the next photograph are completed. In this case, by sequentially turning on the power switch 216 and then the release switch 225 again, the next photograph can be taken through the above-described operations. In this case, the switch 63 is already in the on state when the power switch 216 is turned on, and therefore the output of the inverter 224 is low, so the flip-flop 315 in the motor control circuit 208 is turned on. - Although it is reset by the clear signal PUC1, it is not set, and therefore the motor 51 is not started.
Further, since the switch 63 is on, the flip-flop 218 is reset by the power up clear signal PUC1, and then set by the output of the delay circuit 221 after the delay time has elapsed, and therefore, In this case, after the power up clear signal PUC1 passes through the delay circuit 221, the switching circuit 217
turns on, 11, 20, 102, 201~
Power supply to the circuit elements 207, 212, and 225 to 237 is started.

Incidentally, when recording at the last track position in a predetermined recording area on the disk 1 is finished and the head 105 is moved to the next track position, at this time, the end detection switch is activated as explained in FIG. 1
47 is turned off, and thereafter, charging of the exposure mechanism is completed and the charge shaft locking lever 60 locks the charge shaft 54, so that the switch 6 is turned off.
4 is turned off, power supply to all circuits is stopped regardless of whether the power switch 216 is turned on, and therefore, the camera comes to stop at this point.

One embodiment of the present invention is as described above, but here, in the embodiment described above, particularly in the configuration of the electric circuit system shown in FIG. When the phase of the key 126b and the phase of the keyway 4c of the counter 4 on the side of the cassette 3 loaded in the camera do not match, power is supplied exclusively to the charging motor 51 and its accompanying circuit elements. , and only when the phases of the two match and the two are engaged, power is supplied to the main circuit elements of the camera for exposure control, imaging, recording, and disk drive. This is useful in terms of power saving, and is particularly effective for cameras that use batteries as a power source as in the embodiment.

〔effect〕

As described in detail above, according to the present invention, the structure of the energizing system for the recording head moving means and energy storage means is simplified as a camera equipped with a control means for controlling the exposure state of the movable recording head and the imaging means. As a result, the internal mechanism structure does not become large-scale or complicated, which greatly contributes to making it smaller and more compact, and allows single-shot and continuous-shot functions to be realized with simple means. This is extremely useful for this type of camera.

Furthermore, when recording to the final recording track on the record carrier is completed, an auxiliary force for operating the shutter control means is stored in the energy storage means regardless of whether the recording mode is single-shot imaging mode or continuous-shot imaging mode. After that, by turning off the power, there is no unnecessary power consumption, and when the camera is used next time, it is possible to perform a quick photographing operation without malfunctioning, and the operability is improved.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an example of a record carrier used in an embodiment of the present invention together with its storage container;
FIG. 2 is a perspective view showing the mechanical structure of the main part of the exposure system according to an embodiment of the present invention, and FIGS. 3a and 3b show the charging shaft and FIG. 4 is a perspective view showing the mechanical structure of the disk and head drive unit according to an embodiment of the present invention, and FIG. 5 is an electrical diagram showing the state of the accompanying members. 6 is a circuit block diagram showing the configuration of the circuit system; FIG. 6 is a circuit block diagram showing specific examples of the timing control circuit, charge motor control circuit, and shutter control circuit in the circuit system shown in FIG. 5; FIG. ,6
A timing chart showing the input and output of the main circuits during operation of the illustrated circuit system. 1...Record carrier, 11...Imaging means, 12-1
9...21, 24, 28, 39... Components of exposure state control operating means, 15c, 17c, 25...
...Storage means, 105...Recording head, 106-1
11, 121-138... Components of the head moving means, 51-56, 59... Components of the energizing mechanism (51 is a drive source), 102... Record carrier drive motor, 202... Recording processing circuit, 203... Recording gate circuit, 207... Timing control circuit, 2
08...Charge motor control circuit, 225...
Release means, 63,224,226-231...
. . . Components of the operation control means for single-shot/continuous shooting mode (230 is a mode changeover switch), 234 . . . exposure time determination circuit, 237 . . . shutter control circuit,
37,67,68...Electromagnet, 20,64,14
7,215,216...Switch.

Claims (1)

[Scope of Claims] 1. Imaging means for converting a subject image into an imaging signal corresponding thereto; and shutter control means operated by an energizing force stored in an energy storage means to control the exposure state of the imaging means. a recording head for recording an imaging signal output from the imaging means on a recording track on a record carrier; a head moving means for moving the recording head to each recording track on the record carrier; a common driving source for driving the moving means and accumulating an auxiliary force for operating the shutter control means in the accumulating means; an end detection means for detecting completion of recording on the final recording track of the record carrier; and actuation of the shutter control means each time the release means is operated; a single-shot imaging mode in which the recording operation of the imaging signal by the recording head, the subsequent movement of the recording head to the next recording track by the head moving means, and the energy storage operation of the energy storage means are performed in sequence; , selectively executes a continuous shooting mode in which such an operation is repeated as long as the release means is operated, and the end detection means detects that recording to the final recording track is completed. control means for storing an auxiliary force for operating the shutter control means in the energy storage means and then turning off the power when the shutter control means is operated. 2. The camera according to claim 1, wherein the control means is configured to drive the head moving means and charge the energy storage means in a time-sharing manner.