JPH0419754B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image recording device, and particularly to an image recording device capable of recording an image signal on a recording medium.

[Prior Art] For example, an image recording apparatus capable of magnetically recording an image signal for each track of a recording medium has already been proposed as, for example, Utility Model Application No. 52-95408.

Such a recording device is essentially different from a device that records an image using a photosensitive film in that it is necessary to record while rotating the recording body or the recording head relative to each other, and it is difficult to record well. In order to do this, it is important to stably rotate the recording medium.

Another big problem is how to perform the above-mentioned relative rotation only when necessary for power saving, and how to stably perform good recording throughout.

This problem is particularly serious in an apparatus that has the function of relatively driving the recording medium and the recording head as described above, as well as the function of converting the object into an image signal.

Therefore, in view of the above-mentioned points, Japanese Patent Application Laid-open No. 53-42517 proposes a structure in which a first switch that starts the rotation of the motor and a second switch that issues an instruction to start recording can be operated separately. Devices have been proposed that rotate the motor only when necessary.

[Problems to be Solved by the Invention] However, in the apparatus disclosed in this publication, when the power of the apparatus is turned off during recording, the rotational state of the motor becomes unstable during recording. As expected, a major problem arose: stable recording was not possible.

Such a problem is a big problem that cannot be solved conventionally, and it is difficult to perform good processing. Furthermore, in devices that also have the function of converting the object into an image signal, there is a major problem in that the operation of converting the object into an image signal becomes unstable or impossible during recording, making it impossible to perform stable recording.

In view of the above, it is an object of the present invention to provide an image recording apparatus which has a high power saving effect and is capable of performing stable recording to the end under any circumstances.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention includes: a photoelectric conversion means (corresponding to CCD 9 in one embodiment of the present invention) that photoelectrically converts a subject image to generate an image signal; A recording means (also a head 15) for recording the image signal on the body, a driving means (also a motor) for relatively driving the recording medium and the recording means when recording.
Mo), an operating section (also button 34 in Fig. 3) for switching between the first state and the second state according to the operation; A recording trigger switch (switch SWR ₂ in FIG. 7) for generating a recording trigger in response to a recording instruction operation subsequent to the above operation, when switched to the first state by operation of the operation section; The photoelectric conversion means and the driving means are operated, and the recording means starts recording in response to the recording trigger, and when the second state is switched to the second state by operation of the operation section, the photoelectric conversion means , a first control means (also Tr1,
DFC, IV _2, etc.), when the recording means is switched to the second state by operating the operation unit during the recording operation, the above-mentioned state is changed to the second state at least until the recording of the image signal for one screen being recorded is completed. It is characterized by having a driving means and a second control means (also COM, AP, OG1, FF, etc.) that continues to drive the photoelectric conversion means and then stops the driving.

[Examples] Examples of the present invention will be described below with reference to the accompanying drawings. The embodiment shown here is a case in which the present invention is applied to a handy camera. First, referring to FIGS. 1 to 3, the camera is indicated by CA in the figures. TL is a photographic lens, 1 is a focusing ring, and 2 is a zooming control rod. Reference numeral 3 denotes a half mirror for extracting the viewfinder light, which is arranged behind the photographic lens L in the camera body. Reference numeral 4 denotes a half mirror for taking out the photometric light, which is placed in the reflected optical path from the mirror 3, and a photometric element 5 is placed so as to receive the reflected light from the mirror 4. Reference numeral 6 denotes a total reflection mirror, and behind the mirror 6, a finder optical system having a known configuration is arranged. 7 is an eye cup for the finder. Reference numeral 8 denotes a photographic diaphragm, which is placed behind the mirror 3, and is constructed so that it is possible to cut the diaphragm. 9
is a CCD image sensor as a solid-state image sensor,
Here, we use the well-known frame transfer type two-dimensional imaging.
CCD is used. In addition, as described below,
As is well known, a lenticular lens and a color stripe filter are arranged in front of the imaging section of the CCD 9. Reference numeral 10 denotes a cartridge loading chamber of the camera CA, into which, as shown, a magnetic recording cartridge 12 rotatably housing a magnetic recording disk 11 is loaded. As shown in FIG. 2, the cartridge 12 rotatably supports the disk 11 on a shaft 12a, and a part of its housing has a central opening for receiving a disk drive spindle 14 on the camera CA side. 12a, and a slot 12c for receiving a magnetic head 15, which is also provided on the camera CA side. Above disk 11
As shown in FIG. 1, it has a center hole 11a, is rotatably supported by the shaft 12a in the center hole 11a, and has an arcuate slot 11b concentric with the shaft center hole 11a. Cartridge 1
The plate spring 13 provided in the center opening 12b is biased toward the center opening 12b. As shown in FIG. 2, the loading chamber 10 is depressed at its depth, and when loading the cartridge 12, the cartridge loading chamber lid 16 is opened as shown in FIG. It is inserted obliquely as shown by the line, and at this time, it is tilted in the direction of the arrow in the figure at a position where the spindle 14 can be inserted into the center opening 12b and the magnetic head 15 can be inserted into the slot 12c. It is loaded in a normal position according to
At this time, the tip of the head 15 is connected to the disk 1.
The magnetic recording section 11c comes into contact with the first magnetic recording section 11c. This recording section 1
1c can have a plurality of recording tracks, for example 40, separated from each other, and each track records a magnetic signal for one frame of a still image, as will be described later. Further, the disk 11 itself has flexibility, and the head pressure of the head 15 can be obtained by its elasticity.
Note that when the cartridge 12 has the loading chamber cover 16 closed, the leaf spring 17 attached to the cartridge 12,
18 (shown in the second diagram). The disk drive spindle 14 has a drive pin 14 that can be engaged with the arcuate slot 11b of the disk 11.
a, and is connected to the shaft 19a of the flywheel 19, and the flywheel shaft 19a is subject to rotational play and thrust play due to the bearing metal member 20 at the boss portion 21 of the camera frame. It is mounted on a shaft so that it does not. It should be noted that special attention must be paid to the problem of rattling of the shaft 19a since it has an extremely large effect on recording performance.

M ₀ is a motor for rotationally driving the flywheel 19, and a rubber belt 23 is stretched between the output pulley 22 and the flywheel 19. Reference numeral 25 denotes a head holding member that holds the head 15 at a bent arm portion 25a at its tip, and is a support that is attached to a part of the camera frame along the slot 12c of the cartridge 12. The rod 24 is slidably supported along the rod 24, is biased by a spring 26 in the direction indicated by the arrow in FIG. Ratchet teeth 25 formed to define the spacing between magnetic tracks in the recording section 11C of the disk 11
It has b. Note that when the head holding member 25 is displaced by the spring 20 to the final end position in the direction of the arrow in FIG. Each element is designed to In this case, the number of teeth of the ratchet teeth 25b is the same as that of the disc 1.
For example, it is set to 40 to match the number of tracks set in 1. Therefore, the total number of set positions for the head 15 is 41. Reference numeral 27 denotes a ratchet feed pawl for engaging the ratchet teeth 25b and shifting the holding member 25 one tooth at a time, and is biased by a spring 28 in the direction of engaging with the ratchet teeth 25b. It is coupled to the movable armature Am of the plunger Pl. The plunger Pl is designed to project the armature Am against the spring 29 by a stroke sufficient to accurately shift the holding member 25 by one tooth when energized. Reference numeral 30 denotes a locking claw for holding the holding member 25 in the forwarded position, and is rotatably supported by a shaft 31 installed in a part of the camera frame. , is biased by a spring 32 in the direction of engagement with the ratchet teeth 25b.
33 is a reset member for automatically returning the holding member 25 to the initial position where the head 15 is in contact with the outermost track of the disk 11 when the loading chamber cover 16 is opened; The lid 16 has a hook portion cut out, and is attached to a portion of the lid 16 in such a manner that the hook portion can engage with the tail end 30b of the locking claw 30. Therefore, when the lid 16 is closed, the reset member 33
As a result, the locking pawl 30 is rotated against the spring 32, and at this time, the feed pawl 27 also rotates against the locking pawl 3.
Depending on the head 30a at the tip of 0, the protrusion 27 at the tip
a is pressed and the armature is pressed against the spring 28.
It is rotated about the link connection point with Am as a fulcrum, and both are released from engagement with the ratchet teeth 25b, thereby allowing the holding member 25 to automatically return to the above-mentioned initial position. This reset member 33 has some flexibility, and when the lid 16 is opened beyond a certain angle, the engagement with the locking pawl 30 is released, and when the lid 16 is closed, its head By abutting against and overcoming the tail end 30b of the locking pawl 30, the hook portion is set at a position where it can engage with the tail end 30b. Therefore, it would be a good idea to make the edge portion of the tail end 30b of the locking pawl 30 rounded as shown in FIG.

In FIGS. 1 and 3, 34 is a release button, which here is of a so-called two-step release type. Reference numeral 35 denotes a grip section, in which a power source battery E is accommodated. Also, in Figure 1, EU is an electric circuit unit, the details of which will be described later. Further, in FIG. 3, numeral 36 is a motor selection dial, which can be switched to indexes "S", "C ₁ ", "C ₂ " and "MV". Here, these indicators mean that "S" refers to one image shot, "C ₁ " refers to continuous image shots at a rate of, for example, 7.5 images per second, and "C ₂ " refers to, for example, a continuous image shot at a rate of about 7.5 images per second.
MV stands for a continuous image shot at a rate of about 3.75 images per second, and "MV" stands for a moving image shot at a rate of 30 images per second, or the common video recording speed. (Note that shot means to take a picture). 37 is a slide for selecting the shift of the head 15 relative to the recording track between automatic and manual when shooting one image, and can be switched between indexes "A" and "M"; index "A" is ``M'' stands for automatic shift; ``M'' stands for manual shift. Reference numeral 38 is a push button for shifting the head 15 when the manual shift mode "M" is selected, and is capable of operating the plunger Pl according to a circuit configuration to be described later. still,
Manual shifting of the head 15 is clearly unreasonable in the case of modes "C ₁ ", "C ₂ " and "MV", and therefore here, for example, as shown in FIG. In the modes "C ₁ ", "C ₂ " and "MV", switching from "A" to "M" of the slide 37 is prohibited, and this switching is allowed only in the case of the mode "S". The cam 39 automatically resets the slide 37 to the "A" position when the mode is switched to "C ₁ ", "C ₂ " or "MV" while the slide 37 is in the "M" position. is provided in interlocking relation with the dial 36, so that the cam 39 faces a follower portion 40a of a pin-slot engagement plate 40 on which the slide 37 is provided. In addition, 41 is a click stop.
It's a spring. Furthermore, the mode symbols shown in parentheses for the cam 39 indicate the cam area corresponding to each mode.

Returning to Figure 3 again, 42 is a jack for external output of a video signal (NTSC signal), and a general VTR device can be connected here, and this is especially true when the mode is set to "MV". used. That is, the number of image frames that can be recorded on the disk 11 is only 40 at most according to the above example, so even if you try to record a moving image on this disk 11 at video recording speed, it will end up being around 1 second. Also, even if you increase the number of tracks on a disk, there is a limit to how many tracks there are, so it is unreasonable to use a disk to shoot video shots, but here we will introduce this jack for the MV mode. 42 makes it possible to shoot long moving pictures in combination with a VTR device, further expanding the camera's functionality. 43 is a remote control jack, to which a remote controller is connected.

The above is the configuration of the main parts of this camera CA, but let's move on to the electrical circuit unit EU.
The details of the circuit configuration will be explained below.

First, FIG. 5 shows the configuration of an imaging-video signal (NTSC signal) generation-magnetic recording system, where 44 is an oscillation circuit that generates a relatively low frequency clock pulse on the order of KHz, and 45 is the oscillation circuit. 46 is a synchronous control circuit that generates various synchronous control signals necessary for synchronously controlling the circuit system shown here based on clock pulses from 44;
An oscillation circuit 47 generates a relatively high frequency clock pulse on the order of Hz, and an oscillation circuit 47 generates a clock pulse from the oscillation circuit 46 and a synchronization control circuit 45.
Based on the CCD synchronous drive control signal (this is basically a vertical synchronous signal, for example),
This is a sink driver that outputs various signals necessary to synchronously drive the CCD9. Furthermore, here
As schematically shown in FIG. 6, the CCD 9 consists of a large number of optical sensors arranged in a matrix.
An imaging section (photosensitive section) 9a consisting of elements,
An analog device for time-sequentially transferring the charges stored in the storage unit 9b, which captures charges corresponding to each pixel accumulated in the imaging unit 9a and stores them in correspondence with the address of each element.・As is well known, it consists of a shift register 9c.
Everything except the imaging section 9a is shielded from light, and
As shown in FIG. 5, a color stripe filter 48 and a lenticular lens 49 are arranged on the front surface of the imaging section 9a. The sink above
Among the signals given to the CCD 9 from the driver 47, there is a signal for controlling the accumulation of charge in the imaging section 9a, and a signal for controlling the accumulation of charges in the imaging section 9a. A clock pulse is used to transfer the charge to the storage section 9b in an extremely short period of time every second, and the electric charge taken into the storage section 9b is passed through the shift register 9c for example at 1/60 seconds (this is a clock pulse for transferring the electric charge to the storage section 9b in an extremely short period of time every second). It includes clock pulses, etc. for outputting everything in time series (i.e., reading out stored charges) during the period (corresponding to the time of 1V-1 partial scan), and these signals and pulses are The timing is defined based on a control signal from the synchronization control circuit 45. Incidentally, although not shown in FIG. 6, it goes without saying that the charge transferred by the shift register 9c is ultimately converted into a voltage, current, or the like and output. In addition, since this type of frame transfer type CCD is already well known, further detailed explanation will be omitted.

Now, returning to Figure 3 and continuing the explanation, 50,
51 is a sample/hold circuit for removing noise components in the pressure of the CCD 9, and these are control signals (sampling signals) from the synchronous control circuit 45.
It is controlled by 52 is a video signal (NTSC
A luminance signal circuit 53 that outputs a luminance signal Y depending on the output from the sample and hold circuit 50, and a color signal generation circuit that outputs color signals R-Y and B-Y depending on the output from the sample and hold circuit 51. Signal output circuit 54 and these circuits 53, 5
Based on the signals Y, R-Y, B-Y from 4
The color signal output circuit 54 and the encoder 55 are provided with a synchronization control signal from the synchronization control circuit 45, as is well known. Incidentally, since this type of video signal generation circuit is already well known, only the display based on functional blocks will be given here. 56 is a magnetic recording circuit for video signals, which here includes a low pass filter 57, a pre-emphasis circuit 58, an FM modulation circuit 59, a high pass filter 60, a band pass filter 61, a frequency conversion circuit 62, a low
A well-known configuration of a so-called color subcarrier low-pass conversion multiplex recording system consisting of a pass filter 63, a mixing circuit 64, and a recording amplifier 65 is adopted. Although the operational functions of circuits employing this method are already well known, to briefly mention them here, first, when an NTSC signal, that is, a composite color video signal, is input from the video signal generation circuit 52, this video From the signal, a low pass filter 57 and a band pass filter 61 each output a luminance signal Y,
The 3.58MHz color subcarrier signal _fc is separated. The separated luminance signal Y is subjected to pre-emphasis by a pre-emphasis circuit 58, FM-modulated by an FM modulation circuit 59, and then sent to a high-pass filter 60.
It is applied to the mixing circuit 64 as an FM luminance signal excluding a part of the lower band according to the chrominance subcarrier signal f _c
is balanced modulated in the frequency conversion circuit 62 by the signal _fo of a predetermined frequency from the synchronization control circuit 45,
The low-pass filter 63 takes out the difference signal, that is, the low-frequency conversion color subcarrier signal f _s −f _o −f _c and supplies it to the mixing circuit 64 . A mixed signal (that is, a VTR signal) of the color signal carried on the color subcarrier _fs and the FM luminance signal excluding a part of the lower band is obtained, and this is sent to the head 15 through the amplifier 55. This is to record on the track of the disc 11.

Next, a first specific example of the sequence control system according to the present invention will be described with reference to FIG. 10, although the figure numbers are different. In the example shown in FIG. 10, one magnetic head is used both for detecting unrecorded tracks and for recording, and its operation mode is set to the above-mentioned counter.
By appropriately switching using the output of CNT ₁ , it is possible to automatically detect whether or not there is already a record at the position to be recorded without using a dedicated detection head. In the figure, reference numeral 15 denotes a magnetic head for detection and recording, which is provided at the input stage of the analog switch ASW and the unrecorded/recorded track detection circuit (i.e., amplifier AP, signal integration circuit HIC, and comparator COM). Analog
An inverter IV ₄ of the signal which is connected to the switch ASW' and is to be applied to said analog switch ASW at said analog switch ASW'.
This is done so that an in part output based on the . Therefore, according to this circuit configuration, the counter
When the output of CNT ₁ is low, analog switch ASW' is turned on and head 15' is not activated.
It is used to detect recorded tracks, and at this time unrecorded tracks are detected and the counter is
When the output of CNT ₁ becomes high, the analog switch ASW is turned on and the head 15' is used for recording on the unrecorded track.

Further, SW ₁ is a switch linked to the dial 36, and is configured to be in a closed state in all modes other than the "MV" mode. Tr ₁ is the switching transistor, SWR ₁ is the release button 3
The first stage camera release switch is turned on at the first stage of transistor Tr 4, and is connected to the base of the transistor Tr ₁ . PMC is the output of photometric element 5,
This is a photometry circuit that determines an appropriate aperture value based on the charge accumulation time of the imaging section 9a in the CCD 9.
In this embodiment, this accumulation time is uniquely defined by the time factor in the control signal given to the sink driver 47 from the synchronization control circuit 45 shown in FIG. If you follow the instructions,
This is a fixed time of about 1/60 second, and therefore, in this case, the photometric circuit PMC is given fixed information regarding this time. By the way, this time corresponds to the exposure time of the film in a camera that uses general silver halide film, so the PMC of this photometry circuit can be used as is in the photometry circuit configuration of a well-known film camera. It is. Reference numeral 66 denotes an aperture driving means such as a meter or a motor that adjusts the aperture 8 to a proper aperture value in response to the output of the photometric circuit PMC, and its output shaft is connected to the aperture 8.
is connected to. As mentioned above, the aperture 8 in this case has a so-called aperture cut configuration (the purpose of this is to prevent so-called "burn-in" of the CCD 9). For example, when a meter is used as the diaphragm driving means 66, a spring is applied to the movable coil so that the diaphragm 8 is held in a fully closed state when the coil is not energized. Alternatively, if you use a motor, you can connect a power storage means such as a capacitor to it and apply the holding power of this storage means when the output from the photometric circuit PMC is cut off. It would be good if the aperture 8 could be forcibly driven to close down depending on the situation.

Reference numeral 67 denotes a scale member for displaying the aperture value, which is driven together with the aperture 8 by the aperture driving means 66. For example, it is a scale member with an aperture value scale written on a transparent film, and is placed at a visible position within the camera viewfinder. The aperture value at which the diaphragm 8 has been adjusted is displayed depending on the coincidence of the scale with the fixed index 68. La ₁ is the scale member 67
This is a lamp for illuminating the lamp from behind, and is connected to the output stage of the transistor Tr _1.It is connected to the output stage of the transistor Tr ₁ , and is powered and lit when the transistor Tr ₁ becomes conductive. ,
Therefore, in addition to illuminating the scale member 67, it also functions to display that the release button 34 has been pressed down to the first stage. MCC is a motor control circuit for controlling the constant speed rotation of the motor _M0 , _SW2 is a switch that is connected to the dial 36 and is only turned on in modes " _C1 " and " _C2 ", and OSP is a This is a one-shot pulse circuit that outputs a momentary high pulse when powered by the conduction of transistor Tr ₁ , and this pulse resets flip-flop FF ₁ via OR gate OG ₁ . OR gate to input R
It is applied via OG ₂ to the set input S of flip-flop FF ₂ and via the OR gate OG ₃ to the reset input R of flip-flop FF ₃ . SWR ₂ is a release switch that is turned on at the second stage of the release button 34, and its ON-OFF
The signal is applied to the set input S of the flip-flop _FF1 via the differentiating circuit PFC and the inverter _IV2 . In addition, flip-flop FF ₁ is a switch.
When SWR ₂ is turned on, it is set and its output becomes low, and since this output is applied to the base of transistor Tr ₁ , the release button 34 is pressed to the second stage. If the transistor Tr ₁ is held for a long time, the transistor Tr ₁ will not become non-conductive even if the press of the release button 34 is immediately released, and as will be described later, the switch SWR ₂ is turned off. ,and,
When the detection head 15A detects a recorded track, this holding is released and it becomes non-conductive.

DLC is a delay circuit having a delay time corresponding to the time required for the motor _M0 to start up (50 to 100 msec), and its output is applied to the AND gate _AG1 .

CNT ₁ inputs the vertical synchronization signal (FIG. 8a) from the synchronization control circuit 45 shown in FIG. , c and d are output. AG ₅ is an AND gate that ANDs the above A output and B output, and its output _is as shown in Figure 8e.
This is an AND gate that ANDs the output, and the output is as shown in FIG. 8f. And now, the 8th
If the period of the input shown in figure a is 1/30 sec, the period of A output is 1/15 sec, the period of B output is 1/7.5 sec,
The cycle of the C output is 1/3.75 sec, and the high level time of the outputs of AND gates AG ₅ and AG ₆ and the A output is 1/30 sec, so each output is set to mode "S" and "C" respectively. It can be used as a recording control signal in ` <sub>`1</sub> '' and ``C ₂ '', and these outputs A
The outputs of the AND gates AG ₅ and AG ₆ are selected in modes "S", "C ₁ ", and "C ₂ ", respectively, by a switch AW ₃ interlocked with a dial 36. The output of the counter CNT ₁ selected by this switch SW ₃ is output from the output stage of the imaging-video signal generation-magnetic recording system circuit 69 (that is, the amplifier circuit 65 shown in FIG. 5) having the configuration shown in FIG. Analog switch for recording control installed between head 15
It is attached to the ASW, and recording is controlled by this. Further, the clear terminal CL of the counter _CNT1 is provided with the Q output of the flip-flop _FF2 , and counting is possible only when this Q output is low.

La ₂ is turned on by the transistor Tr ₂ which receives the Q output of the flip-flop FF ₂ at its pace, and lights up when the Q output is low, that is, when the counter CNT ₁ is counting, and recording is started. This is a lamp that indicates that the

AP is an amplifier that amplifies the output of head 15 above.
HIC is a signal integration circuit that integrates the signal output from the amplifier AP, COM is a comparator, and if the output of the comparator COM is a recorded track,
High, low for unrecorded tracks, and this is AND gate AG ₃ , or gate
Granted to OG ₁ , OG ₂ and OG ₃ . Further, an inverted signal of the output of the comparator COM is applied to AND gates _AG1 and _AG2 . CNT ₂ is a counter that receives a clock pulse from the 5th oscillation circuit 14 shown in the figure and divides the frequency thereof, and by giving two appropriate outputs thereof to AND gate AG ₄ , drives the plunger Pl. I am trying to obtain a pulse with a duty that is sufficient for this purpose. The and
The output of gate _AG4 is applied to AND gate _AG3 , and the output of AND gate _AG3 is applied to the base of transistor _Tr3 .

La ₃ is a lamp that lights momentarily to indicate this when the track has already been recorded in the mode "S-M", that is, the mode from 1 image shot to manual head shift. It is connected to the collector side of the transistor Tr 3 in mode "M" by the switch SWM ₁ interlocked with the transistor Tr ₃ . In addition, in mode "A", the switch SWM ₁ connects the plunger Pl to the transistor Tr ₃ .
Connect to the collector of SWP is a push switch turned on by the push button 38, and SWM ₂ is linked to the slide 37,
This is a switch that connects the switch SWP to the plunger Pl in mode "M".

In addition, the jack 42 for external output of the above NTSC signal
is connected to the circuit 69, ie, more specifically, to the output stage of the video signal generating circuit 52 shown in FIG. Further, the remote jack 43 is connected to switches SWR 1 and SWR ₁ through diodes D ₁ and D ₂ as shown in the figure.
Connected in parallel with SWR ₂ .

SWE is a normally-closed end switch that is released when all tracks on disk 11 are finished recording.
The switch is connected in series with the transistor _Tr1 . Incidentally, it would be reasonable to use the configuration shown in FIG. 7, for example, as a configuration for activating this end switch SWE. That is, the illustrated configuration has a part of the camera frame with its tail end as the axis 7.
0, and a pin 71 set on the head holding member 25 is engaged with a slot 72a in the middle thereof, so that the track count member swings in accordance with the feeding of the holding member 25. A holding member 72 is provided so that the number of recorded tracks can be displayed on a track number scale plate 75 disposed in a window 74 by means of a pointer 73 attached to the tip of the counting member 72. 25 is shifted to the left in the figure by the total number of ratchet teeth 25b, that is, when the disc 11 is off the track of the innermost circumference of the recording section 11c, it is further shifted inward by one tooth. When the end switch SWE is turned on, the end switch SWE can be opened by the switch opening protrusion 76 at the tip of the count member 72. Incidentally, the power supply to the circuit system shown in FIG. 5 is controlled by the transistor _Tr1 , similar to the photometric circuit PMC.

Now, next, the operation of the camera having the above electrical system configuration will be explained. As mentioned above, this camera has a mode of "S-A".
(1 image shot - automatic head shift), "S-
M” (1 image shot - manual head shift),
"C ₁ " (continuous shot at 7.5 images/sec), "C ₂ " (3.75
(continuous shots at images per second) and "MV" (video shots depending on the VTR speed using a VTR device)
There are five modes, but for ease of understanding, first, the case of mode "S-A" will be explained with reference to the timing chart of FIG. 9.

First, the camera CA is loaded with a cartridge 12 in which all tracks on the disk 11 are unrecorded (at this time, the head 15 is set at its initial position as described above, ), and the dial 36 is in the "S" mode position, switch SW ₁ is in the on state, switch SW ₂ is in the open state, and the switch is in the "S" mode position.
SW ₃ is connected to the A output terminal of counter CNT ₁ . Further, when the slide 37 is set to the "A" mode position in this state, the switch SWM ₁ is connected to the plunger Pl side, the switch SWM ₂ is opened, and the camera CA becomes the "S-A" mode.

In this state, while looking through the viewfinder, the camera CA
Aim the camera at the desired object and press the release button 34 to the first step to release the release switch.
Since SWR ₁ is turned on, transistor Tr ₁ becomes conductive, and therefore, the photometric circuit PMC is activated and the aperture 8 is turned on.
is adjusted from the fully aperture state to the appropriate aperture value, the lamp La ₁ lights up, the scale plate 67 is illuminated, and the motor M ₀ starts and the disc 1 is turned on.
1 is driven to rotate. This situation is shown in FIGS. 9a, b, d to f. Also, transistor
When Tr ₁ becomes conductive, the one-shot pulse circuit OSP outputs a pulse as shown in Figure 9g, which powers up and clears flip-flop FF ₃ , and flip-flops FF ₁ and FF 3. FF ₂ is reset and set, respectively, and its output and Q output go high as shown in FIG. 9h and i. On the other hand, when the transistor Tr ₁ becomes conductive, power is supplied to the circuit system shown in FIG. 5, and driving of the CCD 9 is started.
The signal H output will start. Furthermore, at this time,
The synchronization control circuit 45 gives a vertical synchronization pulse as shown at K in FIG. 9 to the counter _CNT1 , which is a flip- _flop .
Since the Q output of FF ₂ is low, it is locked in a clear state, that is, in a non-counting state, and does not count the pulses at all, so its A output is low as shown in Figure 9l. The analog switch ASW remains off. Also, at this time,
A clock pulse is now applied to the counter CNT ₂ from the oscillation circuit 44. Also, transistor
After Tr ₁ conducts, the time required for motor M ₀ to reach steady speed has elapsed,
As shown in Figure 9j, the output of the delay circuit DLC becomes high, and therefore, at this point, the AND gate
1 input of AG ₁ goes high.

Also, since the disk 11 is completely unrecorded at this time, no signal appears in the output of the detection head 15, so the output of the comparator COM is low as shown in Figure 9n. . Therefore, the plunger Pl is not energized and the head 15 is in the initial position, that is, in the recording section 1 of the disk 11.
It is held at a position in contact with the outermost track in 1c. Also, at this point, inverter IV ₁
One input of AND gate AG ₁ becomes high depending on the output from .

Now, in this state, when the release button 34 is pressed down to its second stage (as shown in FIG. 9a), the release switch SWR ₂ is turned on as shown in FIG. 9c, and the The output of inverter IV ₂ is inverted from low to high, so flip-flop FF ₁ is set, and at this time the output of AND gate AG ₂ goes high, so that it is applied to the set input S of flip-flop FF ₃ . The output of the AND gate _AG2 is applied to set the flip-flop _FF3 , and its Q output goes high as shown in FIG. 9m. According to this and gate
Since all three inputs of AG ₁ are high, its output is high at this point, and therefore the Q output of flip-flop FF ₂ is inverted to low as shown in Figure 9i, so that the counter CNT ₁ is cleared and starts counting input pulses.

Incidentally, when the output of the inverter _IV2 is inverted from low to high, the flip-flop _FF1 is set and its Q output becomes low as shown _in FIG. Even if the release button 34 is released at this point, the power supply to the circuit system is not cut off and the following operation continues.

Now, when the counter CNT ₁ starts counting its input pulses and its A output goes high as shown in Figure 9l, this causes the analog switch to
When the ASW is turned on, the output of the fifth amplifier circuit 65 shown in the figure is applied to the recording head 15', so that the signal for one frame of the target image is magnetically recorded on the outermost track of the disk 11. Become. Here, the A output at this time is, in this embodiment, the vertical synchronization signal (FIG. 8a) from the synchronization control circuit 45 divided by two as explained with reference to FIG.
The high level time is 1 of this vertical synchronization signal.
On the other hand, in the circuit system shown in Figure 5, as is well known, the CCD
Since the readout of the output is repeated twice successively, two fields and one frame of signals are magnetically recorded on the track of the disk 11 after all. Also, for that reason, the motor control circuit M ₀
It is designed for constant speed control at 1800 rpm.

In this way, when 1/30 second elapses after the A output of the counter CNT ₁ becomes high, the A output becomes low again and the analog switch ASW turns off.
During this time, recording of one frame's worth of signals on the track of the disk 11 is completed in a two-field format. At this point, the output of the comparator COM becomes high as shown in _FIG .
The output of gate AG ₁ goes low. At this time, the flip-flop _FF2 is set by the high output of the comparator COM, and its Q output becomes high as shown in FIG. 9i. As a result, the counter CNT ₁
is cleared and is restricted to a non-counting state, so its A output remains low after the end of recording, as shown in FIG. 9l, and the analog switch ASW also remains off. Also, when the output of comparator COM becomes high, the output pulse from AND gate AG _{4 becomes}
Transistor Tr ₃ conducts to the base of transistor Tr ₃ through the plunger.
Pl is electrically conductive, and therefore, the head holding member 25 is moved to its ratchet tooth 25b by the second illustrated feed pawl 27.
The advance by one tooth causes head 15' to be shifted to the second track of disk 11, and since disk 11 is now completely unrecorded, head 15' The output of the signal is missing, so the comparator
At this point, the output of COM becomes inverted to low as shown in FIG. 9n. Furthermore, the comparator
When the COM output goes high, flip-flop _FF3 is reset. Also, comparator
When the COM output goes high, the flip-flop
FF ₁ is reset and its output goes high as shown in FIG. 9h, so that transistor Tr ₁ is no longer held energized. Therefore, if the release button M has been released from the press at this point and the release switches SWR ₁ and SWR ₂ are turned off, the transistor Tr ₁ becomes non-conductive and the power supply to the entire circuit system is cut off. It becomes like being able to do it. Also, regarding the timing to release the press of the release button 34, for example, as shown by _A in FIG. If so, as described above, the conduction of the transistor Tr ₁ is maintained by the movement of the flip-flop FF ₁ , so the camera automatically performs the above operation and shifts the head 15' to the second track. On the other hand, if the transistor Tr 1 is released when the first stage is pressed but not the second stage, as shown in B in _FIG . Because conductivity is not maintained, the camera stops immediately when the release button 34 is released.

Although the explanation is complicated, while the Q output of flip-flop FF ₂ is low, that is,
During recording, the transistor Tr ₃ becomes conductive, causing the lamp La ₂ to light up, thus displaying the fact that recording is in progress. Furthermore, this lamp La ₂
It would be convenient to arrange the lights so that they can be seen in the viewfinder.

In this mode “S-A”, the camera is 1
After the frame worth of recording is completed, the head 15' is stopped or on standby while being automatically shifted to the next track. Each time the above operation is repeated, one frame worth of image signal is sequentially recorded on each track of the disk 11.

The number of recorded tracks at this time is sequentially indicated on the track number scale plate 75 by a pointer 73 attached to the tip of the seventh counting member 72 shown in the figure. Furthermore, when recording to the innermost track of the disk 11 is completed and the head 15' is automatically shifted, the end switch SWE is opened by the protrusion 76 at the tip of the count member 72, and the entire circuit system is The power supply appears to be cut off momentarily.

Now, the above is a case in which no recording has been made on the disk 11 at all, but if, for example, a cartridge in which recording has already been done up to the middle track is loaded, the situation will be as follows. That is, first, if the first track of disk 11 is already recorded, the switch SWR ₁
Since the output of the comparator COM becomes high when the motor _M
Pl is energized to shift the head 15' to the next track. Also, at this time, the inverter
Since the output of IV ₁ becomes low, even if flip-flop FF ₁ is set at this time, that is,
Even if switch SWR ₂ is closed, its output remains low, so the flip-flop
FF ₃ set is not performed. On the other hand, head 15'
If the new track is not recorded when the shift is performed, the recording prohibition is canceled because the output of converter COM becomes low, and the output of AND gate AG ₂ becomes high. Since the flip-flop FF ₃ is then set, one frame worth of signal is recorded on this new track as described above, but if this new track is also already recorded, the output of the comparator COM is Since it remains high, recording is prohibited and head 15' remains high.
Then, a shift to the next track is performed.

Therefore, if a cartridge is used in which some of the tracks have already been recorded, recording will be prohibited for the already recorded tracks, and automatic shifting of the heads 15' will be performed without double recording. Then, when an unrecorded track is detected, recording begins on the unrecorded track.

Now, the above was for the mode "S-A", but next, in the case of the mode "S-M", that is, 1 image shot - manual head shift, slide 3
7 to the "M" position.
Since the SWM ₁ is switched from the plunger Pl side to the lamp La ₃ and the push switch SWP is connected to the plunger Pl via the switch SWM ₂ , the track that the head 15' is in contact with has already been recorded. is detected, the head 15'
However, the automatic shift to the next track is not performed, but instead the lamp La ₃ lights up momentarily to display a notice that the track opposite the head 15' has already been recorded. In this case, the head 15' can be shifted to the next track by pressing the push button 38 and turning on the switch SWP.

Therefore, in this mode "S-M", if the contact track of the head 15' has not been recorded from the beginning, even if recording is performed in the same manner as described above by the camera release. , even if the output of the comparator COM becomes high at the end of this recording, the lamp La ₃ lights up momentarily and the head 15'
The shift to the next track is not performed, and the shift of head 15' in this case is performed by the push switch.
This is done by introducing SWP. On the other hand, if the track connected to the head 15' has already been recorded from the beginning, the lamp La ₃ will light up momentarily, so if the switch SWP is turned on at this point, the head 15' will be shifted to the next track, and this track will be switched on. If it is unrecorded, it will be recorded on this unrecorded track.
Of course, if this track has already been recorded, the lamp La ₃ will turn on again for a moment to warn you, so eventually the lamp La ₃ will remain on until the head 15' reaches the unrecorded track.
The warning is repeated by the lighting of the button 38, and it is not until the head 15' reaches the unrecorded track by repeatedly pressing the push button 38 that recording is started on the unrecorded track.

Next, in the case of mode "C ₁ " or "C ₂ ", that is, continuous image shot, switches SW ₁ to _{SW 3} are set by switching the dial 36 to the mode "C ₁ " or "C ₂ " position. In either case, the mode is switched to the "C ₁ " or "C ₂ " terminal.

Therefore, the differentiator circuit DFC is short-circuited by the switch SW ₂ , and while the switch SWR ₂ is on, the flip-flop FF ₁ remains set, and therefore the release button 34 remains set.
While the button is pressed up to the second stage, as long as the corresponding track of the head 15' is an unrecorded track, recording will not be inhibited and recording will continue and continuous image shots will be performed. . Of course, in this case, as can be understood from the operation in mode "S-A" described above, if there is a recorded track on the way, the comparator COM is activated when this recorded track is detected.
Since the output of
The flop FF ₂ is set and the counter CNT ₁ is cleared (that is, recording is prohibited), and the plunger Pl is energized to automatically shift the head 15' to the next track, and this track is unused. If it is recording, recording will be performed on that track. This operation continues as long as the release button 34 is pressed down to the second position.

Note that the conductivity of the transistor Tr ₁ is maintained in the same manner as in the above case. Further, in the case of mode "C ₁ ", the output of AND gate AG ₅ is selected by the switch SW 3, and in the case of mode "C ₂ ", the output of AND gate AG ₆ is selected by the switch SW ₃ . , here, as explained with reference to FIG. 10, the mode "C ₁ "
In the case of , it becomes a continuous shot of 7.5 images/second,
In addition, in the case of mode "C ₂ ", continuous shots are made at 3.75 images/second.

By the way, this camera has an external output jack of 42.
When a general VTR device is connected to the , and dial 36 is set to mode "MV", the normal VTR speed,
That is, it is possible to shoot moving pictures at a speed of 2 fields - 30 frames/sec. That is, when the dial 36 is set to mode "MV", the switch
SW ₁ to _{SW 3} are all switched to their mode "MV" terminals, so in this case, all you have to do is press the release button 34 to its first step and turn on switch SWR ₁ . The circuit 69 is activated, and the jack 42 outputs an NTSC signal, which is then magnetically recorded within the VTR device in a well-known manner.

Now, in the embodiment shown above, the head is mechanically shifted with respect to the tracks of the disk 11, but in the end, the magnetic head is shifted to a multi-channel head corresponding to the number of tracks of the disk 11. Therefore, by providing this in a fixed manner and sequentially switching channels, the eleventh embodiment describes an example in which it is possible to determine whether a track has already been recorded or to record to an unrecorded track at the end of each track.
This will be explained with reference to the figures. Note that FIG. 11 only shows the configuration of the main parts to obtain the above functions, and other necessary parts are as follows.
The configuration shown in FIG. 10 will be adopted and explained.

In the figure, CNT ₃ is a counter with a built-in decoder for channel shift, and its clear terminal CL
The output of the one-shot pulse circuit OSP mentioned above is applied to the circuit. IV ₅ is an inverter for obtaining an inverted signal of the output of the one-shot pulse circuit OSP, OC is a one-shot circuit triggered by the rising edge of the output of the inverter IV ₅ , and OG ₄ is the one-shot pulse circuit. This is an OR gate configured to receive both the output of the circuit OC and the Q output of the AND gate _AG3 , and the output of the OR gate _OG4 is used as a count-up clock to the clock input terminal of the counter _CNT3 .
It is designed to be added to CK.

Heads ₁₅₁ to _15o are fixedly provided so as to correspond to each track of the disk 11, respectively, and are used as heads for detecting and recording recorded tracks, which constitute a so-called multi-channel head. , ASW′ ₁ to ASW′ _o are each head 15 ₁ to 15 _o, respectively.
Both are connected to the input stage of the recorded track detection circuit, that is, the amplifier AP. ASW ₁ to ASW _o are analog switches connected to the heads 15 ₁ to 15 _o , respectively, and all are connected to the output stage of the imaging/video signal generation/magnetic recording system circuit 69. AND ₁ ~ AND _o are the above switch SW ₃
This is an AND gate that ANDs the A output _of counter CNT ₁ or the output of AND gate AG ₅ or AG ₆ , which is selected depending on , are assigned to analog gates ASW ₁ to ASW _o , respectively. Note that outputs 1 to n of the counter CNT ₃ are applied to the analog switches ASW' ₁ to ASW' _o , respectively.

According to the above configuration, first, in the first stage of the release, the one-shot pulse circuit OSP to the ninth
As shown in FIG. g, when a one shot pulse is output, the counter CNT ₃ is cleared by the power amplifier, and its outputs 1 to n all become low. Next, the one-shot circuit OC is triggered by the rising edge of the output of the inverter IV ₅ and outputs a one-shot pulse, which causes the counter CNT ₃ to count by one.
When it is turned on, its output 1 becomes high. Therefore, if the mode is set to "C ₁ " or "C ₂ " and the output of counter CNT ₁ is low, only analog switch ASW' ₁ is turned on and the detection head is turned on. 15 ₁ output is amplifier
It will be added to AP. And head 15
If the first track where ₁ , 15 and ₂ are in contact with each other is not recorded, as mentioned above, the output of the counter CNT ₁ becomes high, so the output of AND Goethe AND ₁ becomes high, and therefore, Recording is performed on the first track by the recording head ₁₅₁ . When this recording is finished and detection head ₁₅₁ detects that it has already been recorded, the Q output of AND gate _AG3 becomes high in the same way as described above, so that counter _CNT3 is set to one. After counting up, the output 2 becomes high, and therefore the analog switch ASW' ₂ is turned on, so the detection head ₁₅₂ determines whether the second track is unrecorded or not. If it is detected and unrecorded, recording of the second track is started by the recording head ₁₅₂ when the output of the counter _CNT1 becomes high in the same manner as described above. Also, if it has already been recorded, the Q output of AND gate AG ₃ goes high, so the counter CNT ₃ counts up by one and its output 3 goes high, so the third track is On the other hand, the above-mentioned detection is performed, and if the mode is "C ₁ " or "C ₂ ", as in the case of the above-mentioned embodiment, as long as the release button 34 is pressed down, unrecorded tracks can be accessed. Recording appears to be repeated.

In addition, when the mode is "S", after recording to the unrecorded track is completed, the Q output of AND gate AG ₃ becomes high, and the counter CNT ₃ counts up by one, and the flip-flop starts.・Flop
The camera stops working due to the tilt of FF ₃ , and after releasing the release button 34,
When pressed again, the channels of detection heads ₁₅₁ to _15o are switched starting from detection head ₁₅₁ until an unrecorded track is detected, and when an unrecorded track is detected, the recording corresponding to this track is switched. Recording will start depending on the head.

In addition, the counter selected by switch SW ₃
The inverted signal of the A output of CNT ₁ or the output of AG ₅ or AG ₆ by inverter IV ₆ is
AND with each output 1 to n of CNT ₃ .
It is input to the gates AND′ ₁ to AND′ _o , and each output of the AND gates AND′ ₁ to AND′ _o is converted into an analog signal.
It is constructed so as to be attached to the switches ASW′ ₁ to ASW′ _o .

According to the structure shown in FIG. 11, no mechanical structure for head shifting as shown in FIG. 2 is required. In addition, when adopting this configuration, the configuration for "A"-"M" switching, that is,
It would be inconvenient to have slide 37 and push button 38 and switches SWM ₁ , SW ₂ and SWP. By the way, in this case, if the lamp La ₃ is connected to the collector of the transistor Tr ₃ , the counter
Count up of CNT ₃ , i.e. head 15 ₁
This will display the status of channel switching from ~15 _o .

In order to display the number of recorded tracks when the configuration shown in Fig. 11 is adopted, for example, as shown in each figure, a display unit DU consisting of a decoder driver and a seven-segment LED for display is provided. , the outputs 1 to n of the counter _CNT3 may be provided to the decoder in the display unit DU to display the outputs digitally, or alternatively, an LED consisting of n LEDs may be used.
It would be better to display the number of dots using a dot array display. Particularly in this case, it is convenient to do this within the display camera viewfinder.

Further, as a configuration for controlling the end switch SWE, for example, the n+1st output terminal of the counter CNT ₃ is connected to the base of a transistor TR ₄ whose collector side is connected to an electromagnet Mg as shown in the figure. Then, when this n+1 output becomes high, the electromagnet Mg is energized, thereby opening the end switch SWE.

In the examples, the imaging-video signal generation-magnetic recording system circuit employed in the apparatus of the present invention is as follows:
In particular, a configuration using a CCD image sensor as an image sensor has been shown, but it goes without saying that there is no problem in using a conventional image tube such as a videocon as this image sensor. Further, as for the recording medium, although a magnetic disk is shown in the embodiment, other magnetic drums or the like can be easily used by slightly modifying the mechanism of the camera CA.

[Effects of the Invention] As explained above, according to the present invention, the power saving effect is high, and the photoelectric conversion of the subject image and the recording of the image signal can be reliably and stably performed to the end in any case.

[Brief explanation of drawings]

FIG. 1 is a transparent perspective view of the main parts of a camera incorporating an embodiment of the device of the present invention, FIG. 2 is a cross-sectional view of FIG. 1, and FIG. 3 is a cross-sectional view of FIG. 1. −
4 is a plan view of essential parts showing the related structure of the mode select dial and mode select slide shown in FIG. 3, and FIG. 5 is an imaging-video signal applicable to the device of the present invention. A block circuit diagram showing the basic configuration of an example of a generation/magnetic recording system circuit, FIG. 6 is a schematic diagram of a CCD image sensor as a solid-state image sensor employed in the circuit shown in FIG. 5, and FIG. 7 is a diagram shown in FIG. 10. A transparent perspective view of a main part showing a configuration suitable for the circuit for displaying the number of recorded tracks; FIG. 8 shows an input signal of a counter for outputting a recording control signal in the circuit shown in FIG. 10; Timing chart showing the relationship between the output signals and Figure 9 is mode "S" (one image shot)
10 is a timing chart showing the output relationship of the main circuit parts of the illustrated circuit, FIG. 10 is a circuit diagram showing the first embodiment of the configuration of the electric circuit system in the device of the present invention, and FIG. FIG. 12 is a circuit diagram showing a configuration of a main part of a modified example of the circuit shown in FIG. 10, especially a modification. 11... Recording body (magnetic disk), 11c...
Recording section where recording track is revised, 15', 1
5' ₁ to 15' _o ...detection and recording means (detection/recording head), Pi...means for mechanically shifting the head 15', _CNT3 ...means for switching channels of multi-channel head, _AG2 , FF ₃ , AG ₁ ,
FF ₂ ... Component of double recording prohibition means.

Claims (1)

[Scope of Claims] 1. A photoelectric conversion means for photoelectrically converting a subject image to generate an image signal, a recording means for recording the image signal on a recording medium, and a method for connecting the recording medium and the recording means during recording. a driving means for relatively driving; an operating section for switching between a first state and a second state according to an operation; and recording following the operation when the operating section is switched to the first state by operating the operating section; a recording trigger switch for generating a recording trigger in response to an instruction operation; a recording trigger switch that operates the photoelectric conversion means and the driving means and generates the recording trigger when the operation section is switched to the first state; a first control means that causes the recording means to start recording in response to the above, and stops the operation of the photoelectric conversion means and the driving means when the second state is switched by the operation of the operation section; When the recording means is switched to the second state by operating the operation section during the recording operation of the recording means, the driving means and the photoelectric conversion means are operated until at least recording of image signals for one screen during recording is completed. An image recording apparatus comprising: a second control means that continues to drive and then stops the drive.