JPH081731B2 - Recording device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus, and more particularly, to a recording apparatus capable of exchanging record carriers.

[Conventional technology]

For example, a rotary record carrier such as a magnetic disk or a magnetic drum is used, and a concentric or annular recording track is formed by a movable head on the record carrier, while information of a unit length per track (for example, one field or one frame). In recording devices that record video signals, etc., when attempting to record information while preventing double recording, it is necessary to properly position the head on an unrecorded portion on the record carrier prior to recording. Becomes

Regarding this, conventionally, before recording, the presence or absence of recording at the recording position on the record carrier is detected, and if there is recording, the operation of moving the head to the next recording position is repeated. There is already known a device in which the head is positioned on an unrecorded portion on the record carrier to enable recording only in this state. (For example, it is disclosed in Japanese Patent Application Laid-Open No. 54-140515, which is filed by the applicant of the present application.) In an apparatus having such a structure, for example, when the recording at one recording position is completed, Or, by forming a control sequence such that the head is moved to the next recording position at the time of the next recording operation, the position itself of the current head on the record carrier is used for the next recording on the record carrier. It is the memory for the position, so it can be turned off once, or in the case of a portable device, the battery can be removed or replaced for charging, or the battery voltage can be above the threshold. Even if it drops and becomes unusable, if the power is turned on or restored again, the head for the record carrier used for the previous recording cannot be moved in the meantime. Therefore, it is possible to continue recording without performing double recording based on the current head position and without generating an unnecessary unrecorded portion (empty track).

However, if the record carrier is replaced while the power supply is somehow cut off as described above, the current head position will be completely meaningless, and therefore, if recording is performed as it is, This may result in double recording or empty tracks.

In order to deal with such a situation, it is necessary to perform the positioning operation for the unrecorded portion of the head on the record carrier each time the power is turned on, as described above. This is unreasonable as long as the fact that the record carrier has been exchanged has not been confirmed, and also impairs the instant recordability (that is, the so-called quick-shooting property called by the camera) of the device in all cases, Furthermore, in the case of a portable type device, the power source battery is consumed more quickly.

In addition to the above, for example, even in an apparatus configured to set various conditions for recording, such as switching the head to be used according to the characteristics or type of the record carrier, there are similar problems to the above. It is a matter of concern.

In view of this, the applicant of the present invention provides a recording device in which the record carrier can be replaced by providing a means for mechanically storing that the record carrier has been taken out or newly loaded. A solution to the above problems was first proposed as Japanese Patent Application No. Sho 60-22633.

That is, when the record carrier is exchanged, it is mechanically stored by the above-mentioned storage means, and at the time of the next recording, based on the stored content of the mechanical storage means, the record carrier is stored. After confirming whether or not the head has been replaced, it is possible to reset the head to the above-mentioned unrecorded portion only when the head is replaced.

[Problems to be solved by the invention]

The present invention directly relates to a further improvement of the above-mentioned previous proposal by the applicant.

That is, if the above-mentioned mechanical storage means stores that the record carrier has been exchanged, it is necessary to reset when resetting the head to the unrecorded portion. , In this case, if the mechanical storage means is reset before the recordable position on the record carrier is known, after the resetting, power trouble (battery consumption, replacement Alternatively, if the power is temporarily interrupted due to an erroneous operation), it becomes impossible to re-set the head properly.

Therefore, the present invention is a recording device in which the record carrier can be replaced, and even if the record carrier is replaced with the power off, it can be reliably detected and a corresponding action can be taken. Moreover, the present invention is intended to provide a highly safe recording device which is as safe as possible against power supply trouble in resetting the recording means.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention is a recording device in which a record carrier can be replaced, and a search operation for determining whether or not information is recorded in each recording area on the loaded record carrier. Search means for performing, first storage means for storing the search results by the search means, and an auxiliary power supply circuit for supplying power to the first storage means and holding the stored search results, Detection means for detecting that the record carrier has been taken out of the device or newly loaded, second storage means for storing the detection result of the detection means, and stored in the second storage means. The control means for controlling the search means according to the detection result of the detection means and the search means are operated, and the search result is stored in the first storage means. Means of storage After storage operation is complete, in which a resetting means for resetting the storage contents of said second storage means.

[Action]

In the above structure, the control means causes the search means to operate when the second storage means stores that the record carrier has been exchanged.

In that case, the said 1st memory | storage means memorize | stores the search result by the said search means.

Then, after this storage is completed, the reset means resets the second storage means.

On the other hand, the first storage means is supplied with power from the auxiliary power supply circuit. Therefore, even if a power trouble occurs after resetting the second storage means, the recording means (recording head) is reset. It can be performed based on the stored contents of the first storage means.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

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

In FIG. 1, reference numeral 1 denotes a cassette as a record carrier holder, in which a flexible rotary magnetic disk 2 as a record carrier is housed. At the center of the magnetic disk 2, there is provided a center core 3 as a mounting portion made of synthetic resin or the like, and a magnetic plate 3d (third B, 3C shown) is fixed to the lower surface of the center core 3. The magnetic plate 3d is provided with a magnetic pin 3e for instructing a rotation phase so as to penetrate the center core 3. The cassette 1 is provided with upper and lower openings 1a and 1b, and stabilizers 37 and 15 (FIG. 2) for stabilizing the rotation of the magnetic disk 2 can be inserted therein, respectively. . Then, the recording magnetic head 5 abuts or closely faces the recording surface of the magnetic disk 2 through the lower surface side opening 1b.

The center core 3 is mounted on the loading side magnetic disk rotation driving spindle 6 and has an engagement hole 3c for this purpose. The engagement hole 3c is formed by two inclined surface portions 3b and a spring portion 3a. The spring 6a is attached to the spindle 6 so that the inclined surface 3b of the center core 3 is in contact therewith. Also, a magnetic plate 3d provided on the lower surface of the center core 3
On the other hand, the flange 6a of the spindle 6 is provided with a permanent magnet 7, and when the center core 3 is mounted on the spindle 6, the magnetic plate 3d is attached to the permanent magnet 7 on the spindle 6 side.
The so-called magnet / chaking is performed by the suction by means of the flange surface 6b of the flange portion 6a of the spindle 6 at this time.
When the lower surface of the center core 3 comes into contact with, the height of the magnetic disk 2 with respect to the head 5 is defined.

Reference numerals 1c and 1d denote openings on the upper and lower surfaces of the cassette 1 corresponding to the center core 3.

Next, one embodiment of the present invention using the above-described magnetic disk cassette will be described below.

First, referring to FIG. 2, in the same figure, reference numeral 11 indicates a main body chassis of the recording apparatus. The main body chassis 11 is provided with the spindle 6 and the head 5 which are rotatable and movable. ing. Further, the main body chassis 11 is provided with a hinge shaft 12. Reference numeral 16 denotes a side plate provided on the main body chassis 11, and a shaft 17 is erected on the side plate 16 and a tension lever 18 to which a spring 19 applies a biasing force in a clockwise direction to the shaft 17. It is rotatably provided. Further same side plate
A pair of pins 20 are erected in 16 and two lock levers 21 and 23 which are slidable by being guided by the pins 20 are respectively springs 22 and 22.
It is urged to the left in the figure by 24. Incidentally, 4
Reference numerals 1 and 42 denote spring hooking pins for the springs 22 and 24, which are planted in the side plate 16.

Reference numeral 31 denotes a cassette holder as a cassette receiving member, and the holder 31 is rotatably attached to the main body chassis 11 around the hinge shaft 12 by a hinge portion 31e. The holder 31 has an opening 31f for receiving the above-described cassette 1 at one end, and the cassette 1 is inserted through the opening 31f. The openings 31a and 31b provided in the holder 31 are for allowing the stabilizing plates 37 and 15 described later to enter, respectively.
The openings 31c and 31d are provided to allow the protrusions 38a to enter the spindle 6 and a center-core pressing leaf spring 38, which will be described later.

The opening 31g provided on the lower surface side is the hole 1 of the main body chassis 11.
This is for allowing the cassette sensing piece 66a of the cassette loading / unloading detection lever 66 (FIG. 5), which will be described later, to be projected through 1b.

Reference numeral 35 denotes an outer casing member, that is, an outer cover.
Is attached to the main body chassis 11 so as to be rotatable about the hinge shaft 12 by the hinge portion 35a. A locking pin 36 is provided on the tip side surface 35c of the outer cover 35.
a and 36b are implanted, and a hook member 40 for the holder 31 is provided. Reference numeral 37 denotes an upper stabilizer attached to the ceiling portion of the outer cover 35, and vibrations when the magnetic disk 2 is rotated by sandwiching the magnetic disk 2 from above and below together with the lower stabilizer 15 provided on the chassis 11 side of the main body. Also, prevent deformation. In this case, each stabilizer 37,15
Their positions are set so that an appropriate air layer is formed between the magnetic disk 2 and the magnetic disk 2. The head 5 projects through an opening 15a provided at the center of the lower stabilizer 15. Reference numeral 38 denotes a T-shaped leaf spring whose tail end 38b is fixed to the ceiling portion of the outer cover 35 by means of a screw or the like and is a T-shaped leaf spring. A position regulating member 39 that is formed so as to project to, and has ears 38c on both sides thereof fixed to the ceiling of the outer cover 35,
Therefore, the protrusion 38a is arranged so as to come to the upper portion of the spindle 6 in a state where an initial force is applied by being locked against the elasticity of the leaf spring 38.

The spring 13 arranged on the hinge shaft 12 is the holder described above.
The arms are applied to the outer cover 31 and the outer cover 35, respectively, and a turning force in the opening direction is applied between the two. The spring 14 applies a counterclockwise turning force to the outer cover 35 when one arm thereof is applied to the main body chassis 11 and the other arm is applied to the outer cover 35.

74 is provided on the chassis 11 and is arranged so that the contact piece 74a is pressed by the switch control arm 23d of the lock lever 23 so that the contact pieces 74a and 74b come into contact with each other in the states of FIGS. 3C and 4C described later. It is a normally open outer cover lock detection switch.

The structure of the storage means for mechanically storing the fact that the cassette 1 has been converted (attached / detached) will now be described with reference to FIG.

In the figure, reference numeral 61 denotes a lever pivot member fixedly provided on the back surface of the top plate of the main body chassis 11, and 62 denotes a switch operation lever pivotally supported by a shaft portion 61a of the pivot member 61 so as to be able to rotate and move. The switch operating portion 62a is bent at its tip so as to be positioned above the contact piece 70a of the switch 70 in a neutral state.
have. 63 is a spring for urging the lever 62 in the counterclockwise direction in the figure and for maintaining it in a neutral state.
The shaft 61 is wound around a shaft portion 61a, and both ends are hung on a lever 62 and a fixing pin 65, respectively. Pin 65 is the tail end of lever 62
By receiving 62b, the counterclockwise rotation thereof is arranged so that the switch operating portion 62a can be regulated at a position just above the contact piece 70a of the switch 70. 64 is a retaining member for the spring 63 and the lever 61.

66 is almost L with a cassette sensing piece 66a at its tip
A cassette-shaped attachment / detachment detection lever, which is rotatably supported by a shaft 67, and counterclockwise in the figure by a spring 68, that is, the cassette detection piece 66a (of the top plate) of the body chassis 11.
It is urged in a direction projecting to the holder 31 side through the hole 11b, and further for pushing down the falling portion 66b for receiving the arm portion 62c of the switch operation lever 62 and the same arm portion 62c against the spring 63. And the contact portion 69a of the switch 69.
A switch operation unit 66d for pressing is provided.

Reference numeral 69 is a normally-open cassette presence / absence detection switch, which is used when the cassette 1 is not loaded.
When the switch 68 is rotated counterclockwise by the spring 68, the contact piece 69a is pushed down by the switch operation portion 66d and is disengaged from the contact piece 69b to be turned off, and the cassette 1 is loaded. In the state, as shown in FIGS. 3B and 3C, the lever 66 pushes its sensing piece 66a by the lower surface of the cassette 1 and rotates it clockwise, so that the contact pieces 69a and 69b are slidable by themselves. It is arranged so that it contacts and turns on.

Reference numeral 70 denotes a normally open cassette attachment / detachment detection switch arranged so that the switch 70a of the switch operating lever 62 is turned on when its contact piece 70a is pushed down and comes into contact with the contact piece 70b. .

Reference numeral 71 denotes a gear that is rotated in association with the movement of the head 5 by a head movement mechanism described later, and is rotatably supported by a shaft 72. Reference numeral 73 is a reset lever integral with the gear 71, and the rising portion 73a of the reset lever 73 allows the head 5 to be moved by a head moving mechanism at a predetermined position outside a predetermined recording area on the magnetic disk 2. 62
The arm 62c is disengaged from the pressing portion 66c of the cassette loading / unloading detection lever 66 by pressing the tail end 62b and rotating it clockwise against the spring 63.

In the above arrangement, first, in order to load the cassette 1, the outer cover 35 is rotated counterclockwise around the hinge shaft 12 by the urging force of the spring 14 against the main body chassis 11 as shown in FIG. 3A. It is moved to open, and one end 35b is brought into contact with the main body chassis wall 11a to be stopped. In this case, the biasing force of the spring 13 causes the holder 31 to rotate clockwise with respect to the outer cover 35, but is restrained at the position shown in FIG. 3A by the hook member 40 provided on the outer cover 35. become.

Here, when the outer cover 35 and the holder 31 are opened as shown in FIG. 3A, as shown in FIG. 4A, the hook portion 18b of the tensioning lever 18 and the claw portion 21d of the locking lever 21 are engaged. It has become. Also, the bent portion 21c of the lock lever 21 and the one end 23c of the lock lever 23 are in contact with each other, so that the lock levers 21 and 23 are displaced rightward against the springs 22 and 24, respectively. It is in a locked state. Further, the claw portions 21a and 23a and 21b and 23b provided on both the lock levers 21 and 23 are the lock pins planted in the outer cover 35.
It is located outside the movement locus of 36a, 36b. In this state, the contact pieces 74a and 74b of the lock completion detecting switch 74 are in a non-contact state.

In this state, since the cassette loading / unloading detecting lever 66 is rotated counterclockwise by the spring 68 in FIG. 5, the switch operating lever 62 is driven by the falling portion 66b of the detecting lever 66. The restriction is released, and the tail end 62b is rotated counterclockwise by the spring 63 until the tail end 62b abuts on the pin 65 and the switch operation part 62a is turned to the contact piece 70a of the cassette loading / unloading detection switch 70. It is located just above. Further, the cassette presence / absence detection switch 69 has its contact piece 69a pushed down by the switch operation portion 66d of the detection lever 66, and the contact pieces 69a and 69b are in a non-contact state.

Returning to FIG. 3A again, in the state shown in the drawing, the cassette 1 is inserted from the opening 31f of the holder 31, and the outer cover 35 is rotated clockwise about the hinge shaft 12 against the biasing force of the spring 14. And the holder 31 also rotates in the same direction about the hinge shaft 12, and the spindle 6 moves through the opening 31c of the holder 31 to the center of the magnetic disk 2 at the position corresponding to the secate loading and disk mounting completion position shown in FIG. 3C. The core 1 is inserted into the engaging hole 3c, and the lower stabilizer 15 and the upper stabilizer 37 are also inserted through the openings 31b and 31a of the holder 31, respectively.
Into the openings 1b and 1a. At this time, as shown in FIG. 3B, when the outer cover 35 is further pushed in the direction of the arrow than the position corresponding to the cassette loading and disk mounting completion position shown in FIG. 3C, the outer cover 35 is provided on the outer cover 35 at this time. Of the magnetic disk 2 by the projecting end 38a of the leaf spring 38.
Center core 3 is urged toward the spindle 6 side, and its lower surface is the flange surface of the flange portion 6a of the spindle 6.
It comes to be able to contact 6b. The outer cover at this time
The quantitative difference between the pushing stroke of 35 and the required pushing amount of the center core 3 is absorbed as the bending of the leaf spring 38.

Here, when the cassette 1 is inserted into the holder 31, in the state shown in FIGS. 3B and 3C, the cassette attachment / detachment detection lever 66 shown in FIG. 5 pushes the cassette sensing piece 66a by the lower surface of the cassette 1. Therefore, it is rotated clockwise against the spring 68, and at this time, the pushing portion 66c pushes down the arm portion 66c of the switch operating lever 62. As a result, the operating lever 62 pushes down the contact piece 70a of the cassette mounting / dismounting detection switch 70 at the switch operating section 62a, and contacts the contact piece 70b to turn it on. At this time, the cassette presence / absence detecting switch 69 is turned on by its own slidability because the pressing operation portion 66d of the detecting lever 66 releases the pressing of the contact piece 69a.

Of course, if the cassette 1 is not inserted in the holder 31, the detection lever 66 will not be rotated in the clockwise direction, so that both the switches 69 and 70 remain off.

As can be understood from the above, in the present embodiment, the arm portion from the switch operating lever 62 is the cassette attachment / detachment detection lever 66.
The fact that the cassette 1 has been taken out is stored by being switched to the position in which it has been rotated until it enters into the underside of the pressing portion 66c of the, and this stored signal is then stored in the holder.
When the cassette 1 is loaded in the 31 and is pushed down together with the outer cover 35 and set to the states shown in FIGS. 3B and 3C, the cassette attachment / detachment detection switch 70 can be obtained in the ON state. is there.

Now, when the outer cover 35 is pushed in as shown in FIG. 3B, of the locking pins 36a and 36b implanted in the outer cover 35,
Pin 36b pushes down on tail end 18a of tension lever 18
By rotating 18 against the spring 19 in the counterclockwise direction about the shaft 17, the engagement between the hook portion 18b and the claw portion 21d of the lock lever 21 is released, and the lock lever is released by this engagement. As shown in FIG. 4B, 21 is moved to the left by the biasing force of the spring 22, and at this time, the claw portions 21a and 21b are located above the lock pins 36a and 36b, respectively. At this time, the locking lever 23 has a side end of the claw 23a or 23b.
The lateral abutment against the pin 36a or 36b prevents the spring 24 from traveling to the left and allows the lock lever 21 to stay with respect to traveling. After that, when the pushing of the outer cover 35 is released, the outer cover 35 tries to rotate counterclockwise about the hinge shaft 12 by the biasing force of the spring 14, but at this time, the lock pins 36a and 36b The claw portions 21a and 21b of the lock lever 21 are engaged with each other to prohibit the rotation thereof. Also, at this time, the lock lever 23 travels leftward by the biasing force of the spring 24 until it is restricted by the bent portion 21c of the lock lever 21, and its claw portions 23a, 23b and the lock lever 23 are moved.
The pins 36a and 36b engage with each other as shown in FIG. 4C. That is, at this time, the outer cover 35 is fixed to the main body chassis 11. In this state, the switch control arm 23d of the lock lever 23 causes the contact piece 74a of the lock completion detection switch 74 to come into contact with the contact piece 74b to be turned on, and the tip of the leaf spring 38 provided on the outer cover 35. As shown in FIG. 3C, the protruding portion 38a cuts off the contact with the center core 3, and the magnetic disk 2 is properly mounted on the spindle 6, and is rotated by the rotation of the spindle 6 in this state. Like

Incidentally, in order to take out the cassette 1, the bent portion 21 of the lock lever 21 projecting from the slot-shaped opening 16 of the side plate 16 is required.
By pressing e against the springs 22 and 24 to the left in FIG. 4C, the lock lever 21 can be locked by the tension lever 18 as shown in FIG. 4A. It will not be necessary to explain in detail that 23 is returned to the original position and the switch 52 is opened, and the outer cover 35 and the holder 31 are brought into the state of FIG. 3A by the action of the springs 13 and 14.

Incidentally, in FIGS. 3A, 3B and 3C, 43 is a positioning member for the cassette 1 provided on the bottom inside the holder 31, but with respect to this positioning member 43, for example, on the ceiling of the outer cover, Cassette 1 in connection with closing of the outer cover 35
It is possible to provide a leaf spring 44 or the like that presses against the positioning member so that the cassette 1 is reliably positioned with respect to the holder 31.

Here, as a modification of the cassette loading and disk mounting mechanism described above, for example, the holder 31 may be omitted, and the hinge shaft 12 and the side plate 16 of the main body chassis 11 may be used instead.
A fixed cassette receiving portion may be formed by a frame or the like having a shape conforming to the shape of the cassette 1 in a space sandwiched between the cassette 1 and the cassette 1 in the receiving portion. An elastic member such as a leaf spring, sponge, or soft rubber is applied to the outer cover 35, for example, on the ceiling thereof to act to press the cassette 1 against the main body chassis 11 in the locked state of the outer cover 35 in FIG. 3C. And the cassette 1 can be held in a fixed state with respect to the main body chassis 11. In this case, it is possible to add a means for ejecting the cassette 1 from the receiving portion of the main body chassis 11 so that the cassette 1 can be manually operated or interlocked with the opening operation of the outer cover 35. is there.

As a modification of the storage means shown in FIG. 5, for example,
Only the switches 69 and 70 and the gear 71 are disposed on the body chassis 11 side, and the operation lever 62 and the detection lever 66 are disposed on the back side of the holder 31 in a manner shown in FIG. 5, so that the cassette sensing piece 66a of the detection lever 66 is provided. Holder through opening 31g of holder 31
Levers 66 and 62 when the holder 31 and the outer cover 35 are set to the positions shown in FIGS. 3B and 3C.
Can act on the switches 69 and 70, respectively, and
The reset lever 73 may be configured to be able to act on the lever 62.

Next, the magnetic head moving mechanism will be described with reference to FIG.

In the figure, 5 is the above-mentioned magnetic head, which is fixed to the head carrier 46 via the head mounting substrate 9 at its hole 46c. Head Carrier 46 is a ball for sliding
It is supported by a guide rail 47 via 48, and is movable along the guide rail 47. The ball 48 is a V-shaped groove at each end of the head carrier 46 and the guide rail 47.
Invades 46e and 47a. 46d is an elongated hole formed in the head carrier 46 to escape the spindle 6. At the tip of the arm 46a of the head carrier 46, an engaging portion 46b with the head moving screw 54 is provided.
A spring 56 for removing the backlash is hung between the arm portion 46a and the fixing pin 57.
46 is urged downward in the direction of arrow X in the figure, that is,
The engaging backlash between 46b and screw 54 is removed.

The screw 54 is attached to the center of the shaft 51, and the shaft 51 is rotatably supported by the bearing 52.
Moreover, a worm wheel 53 and a worm gear 55 are attached to both ends thereof. Worm wheel 53
Is in mesh with a worm gear 50 mounted on the output shaft 49a of the head moving step motor 49, and the worm gear 55 is in mesh with a gear 71 in FIG.

Therefore, when the step motor 49 rotates, the rotation is transmitted to the shaft 51 through the engagement of the worm gear 50 and the worm wheel 53, and the screw 54 is rotated, so that the carrier 46 has its engaging portion 46b. The screw lead of the screw 54 is moved through the engagement between the screw and the screw 54, and the moving direction in this case depends on the rotation direction of the motor 49, and also, the unit track on the disk 2.・ Moving amount for pitch is motor
It can be controlled by the number of rotation steps of 49. Of course, in this case, the gear 71 is rotationally driven through the worm gear 55.

Reference numerals 58 and 59 denote detectors for detecting that the head 5 has deviated from a predetermined recording area on the disk 2 on the outer peripheral side and the center side of the disk 2, respectively, and the light emitting elements 58a and 59 respectively.
It has a well-known photo-coupler configuration including a and light receiving elements 58b and 59b, and is arranged so as to detect the light shielding plates 46f and 46g attached to the carrier 46.

In the following description, it is assumed that 50 compatible recording tracks can be set in the predetermined recording area on the disk 2 with a predetermined track pitch, for example (100 μm), from the outer peripheral side to the center side of the disk 1. Each track shall be numbered 1 to 50. In this case, the detector 58 indicates that the head 5 is moved to the outer circumference of the disk by one track pitch more than the first track position (hereinafter, for convenience, the position of the head 5 is referred to as the 0th track position). To detect the light-shielding plate 46f, and the detector 59 detects the time when the head 5 is moved further toward the disk center side by one track / pitch than the 50th track position (hereinafter, for convenience, The position of the head 5 is referred to as the 51st track position), and they are arranged so as to detect the light shielding plate 46g. Further, the gear 71 moves counterclockwise (clockwise in FIG. 5) in response to movement of the carrier 46 in the direction of arrow X in the figure.
In response to the movement in the direction opposite to the arrow X, it shall be rotated clockwise (counterclockwise in FIG. 5).
The reset lever 73, for example, pushes the tail end 62b of the switch operating lever 62 at its rising portion 73a when the head 50 is moved from the 0-track position to the outer circumference of the disk by a few more tracks or pitches. It is assumed that the arm portion 62c of the lever 62 and the push-down portion 66c of the detection lever 66 are set to be disengaged. Also, the carrier 46 is a step
It is assumed that the motor 49 can be moved in the direction of arrow X by the forward rotation and in the opposite direction by the reverse rotation.

Next, an electric circuit system of the recording apparatus having the above mechanical configuration will be described with reference to FIG. FIG. 1 shows an example of a circuit system when the present invention is applied to a still video recording apparatus.

In the figure, 81 is a camera section having a well-known configuration for forming a video signal, 82 is a recording circuit for recording the video signal output from the camera section 81 on the disk 2 through the head 5, and 83 is the recording circuit. A recording control circuit for controlling the recording circuit 82 so as to record one field or one frame of video signal, and 84 is a horizontal and vertical cycle signal HS.
, And a periodic signal generating circuit for generating VS, and the output thereof is given to the camera unit 81, the recording circuit 82, the recording control circuit 83, and a disk motor control circuit 89 described later. It should be noted that the recording control circuit 83 terminates the recording by the head 5 and the recording end signal RE
Is output.

Reference numeral 85 is a recording presence / absence detection circuit which constitutes a search means for detecting recording at each recording position on the disk 2, that is, the presence or absence of a video signal through the head 5, and 86 is a head 5
Is a switching switch for switching between the output of the recording circuit 82 (terminal R side) and the input of the detection circuit 85 (terminal C side).

87 is a step motor drive circuit for driving a head moving step motor 49 (FIG. 6), 88 is a disk rotation motor for rotating the disk 2 through the spindle 6, and 89 is the motor 88 for controlling. In the disk / motor control circuit, here, the reference speed signal from the internal reference oscillator, the rotation speed signal FC from the motor 88, the vertical cycle signal VS from the cycle signal generation circuit 84, and the disk 2
Based on the disk rotation transfer signal PG from the disk rotation phase detector 90 that detects the magnetic pin 3e embedded in the center core 3 of the disk, the disk 2 has a predetermined speed corresponding to the field or frame frequency of the television. (3.600 to 1.800 ram in NTSC), and
The motor 88 is controlled so that it can be rotated in a predetermined phase with respect to the timing of the vertical cycle signal VS. The control circuit 89
Outputs the servo lock-in signal SL when the motor 88 starts to rotate at the specified speed and the specified phase.

91 is a recording trigger switch 95 described later, a mode switching switch 97, the cassette presence / absence detection switch 69, the cassette attachment / detachment detection switch 70, the outer cover / lock completion detection switch 74, the carrier position detectors 58 and 59, and the recording control circuit. 83
Recording end signal from RE Servo from RE motor control circuit 89
The system and controller control the entire circuit system of FIG. 7 based on the lock signal SL and the power-on signal PO obtained when the power is turned on.

92 is an indicator including a light emitting element or a light emitting element, 93 is a power supply circuit including a battery, 93 'is a back-up (auxiliary) power supply circuit including a capacitor, 94 is a power switch, 95 is a recording trigger switch, and 96 is a trigger button. , Here the first
The power switch 94 is turned on by pushing down to the second stage, and the recording trigger and the switch 95 are turned on by pushing down to the second stage. 97 is a single shooting mode (a mode for recording one field or one frame for one operation of the trigger switch 95) and a continuous shooting mode (a mode in which recording is repeated at a predetermined speed as long as the trigger and switch 95 are turned on) ) And the mode switching switch to switch between single shooting mode when set to off and continuous shooting mode when set to on.

It is needless to say that only the trigger switch 95 can be operated by the trigger and button 96, and the power switch 94 can be operated by other members.

The recording presence / absence detection circuit 85 is configured to detect the presence / absence of an RF (radio frequency) signal when the recording signal is an FM signal, for example, and outputs a high signal when recording is present.

Further, the back-up power supply circuit 93 'charges power to its capacitor by being fed from the power supply circuit 93 when the power switch 94 is turned on, and in response to the switch 94 being turned off, this charged power is supplied to a required circuit (for example, at least It is supplied to the controller 91 and a latch circuit 100) which will be described later, and has a capability of several tens of minutes to several hours.

Reference numeral 99 is a counter for counting the drive pulses from the step motor drive circuit 87, which is driven by the control signal from the controller 91 in the forward rotation direction (X direction of the carrier (46)) to count up or rotate in the reverse direction ( Countdown by driving the carrier 46 in the direction opposite to the X direction,
Also, while the carrier position detector 58 is cleared by being turned off, the carrier position detector 59 is turned off and the output ("51") of the preset data generating circuit 98 is preset.

Reference numeral 100 is a latch circuit for latching the contents of the counter 99 in response to a load command from the controller 91, which constitutes means for electrically storing the search result of the presence or absence of recording, and is also supplied with power from the backup power supply circuit 93 '. It is like this. Reference numeral 101 is a comparison circuit for comparing the content A of the latch 100 with the content B of the counter 99, and its A = B output (A = B high) is given to the controller 91.

The system controller 91 includes a micro computer and the like as a main constituent element and is also supplied with power from the backup power supply circuit 93 '. Regarding its operation, refer to the operation flow chart below. I will explain.

In the above structure, first, the preparatory operation for recording when the power switch 94 is turned on by pushing down the trigger button 96 to the first step will be described with reference to FIG. .

When the power is turned on (step S01), the system controller 91 checks whether or not the outer cover lock completion detection switch 74 is on (step S02).
If it is not turned on, wait until it is turned on. on the other hand,
If it is on, the controller 91 then checks whether or not the cassette loading / unloading detection switch 70 is on (step S03). If it is on, the cassette 1 is exchanged (dismounted / installed). Therefore, the automatic positioning operation of the head 5 to the unrecorded position on the disk 2 described below is performed.

That is, first, the controller 91 causes the disk / motor control circuit 89 to operate the motor 88 in order to prevent the recording surface of the disk 2 from being damaged by moving the head 5 while the disk 2 is stopped. The command causes the motor 88 to rotate (step S04), and then the step motor 49 is transmitted to the step motor drive circuit 87.
The motor 49 is continuously rotated in the normal direction by instructing the continuous rotation of the motor (step S05). This allows the head 5 to be continuously moved toward the center of the disk 2, that is, in the direction of arrow X in FIG. During this time, the controller 91 determines whether the carrier position detector 59 shown in FIG. 6 is turned off (meaning that the light receiving element 59b is turned off) by the light shielding plate 48g of the carrier 46 when the head 5 reaches the 51st track position. Is repeatedly checked (step S06), and when it is turned off, a command to stop the motor 49 is once issued (step S07).

Now when the carrier position detector 59 is turned off, the counter
99 is the preset data generating data from the circuit 98 "51"
Is preset, and the content becomes "51".

Next, the controller 91 connects the switching switch 86 to the terminal c side (step S08), checks the output of the recording presence / absence detection circuit in this state (step S09), and if it is not high, the latch circuit 100 is operated and the counter is turned on. After the output of 99 is latched (step S10), step motor 4
The reverse rotation of 1 step of 9 is commanded (step S11). Thereafter, this operation is carried out when the output of the detection circuit 85 becomes high or the head 5 reaches the 0th track position.
It is repeated until 58 is turned off (step S12).

The recording presence / absence detection circuit 85 detects the presence / absence of a recording signal on the disk 2 based on the signal picked up by the head 5, and outputs a high signal if there is, and a low signal if there is no recording signal. Output a signal. At this time, the counter 99 counts down by one each time the step motor 49 reverses one step.

In the above operation, if the output of the detection circuit 85 becomes high in step S09, the system controller 91
Instructs continuous reverse rotation of the motor 49 (step S13), and at the same time checks whether or not the carrier position detector 58 is turned off (step S14), and gives an instruction to stop the motor 49 when it is turned off (step S13). Step S15). As a result, the head 5 is set to the 0th track position, at which time the counter 99 is cleared and its content becomes "0". On the other hand, at this time, the latch circuit 100 retains the data of the number of the track next to the last recorded track (not recorded) as viewed from the outer peripheral side of the disk 2, that is, the 0th track side. .

After stopping the motor 49 in step S15, the controller 91 shifts to the next step S16 and commands the reverse rotation of the motor 49 by several track pitches (hereinafter, TP).
Here, if the detector 58 is turned off in the previous step S12, step S16 is performed without going through steps S13 to SS15.
Move to In this case, the content of the latch circuit 100 is "1". Of course, even in this case the counter 99
Has been cleared and its contents are "0". Also,
If 50 tracks have been recorded, step S09 → S
At the time when the cycle of 10 → S11 → S12 → S09 is completed, the process proceeds to step S13, so that the content of the latch 100 at this time is “51”.

In step S16, the controller 91 commands the drive circuit 87 to reverse the step of the motor 49 in order to move the head 5 in the direction opposite to the arrow X by several TP. As a result, the reset lever 73 shown in FIG.
By rotating the arm counterclockwise in the figure
Of the cassette attachment / detachment detection lever 66, the cassette attachment / detachment detection switch 70 is returned to the ON state, while the operation lever 62 causes the arm 63c of the detection lever 66 to fall due to the action of the spring 63. It becomes possible to return to the neutral state where it can collide with the portion 66c. Therefore, after that, the operating lever 62
Even if the pressure applied by the reset lever 73 is released, it will abut against the falling portion 66C of the detection lever 66 and will not act on the switch 70 at all.

Now, the controller 91 changes the step motor 49 to several TPs.
After reversing for a minute, the motor 5 is instructed to continuously rotate in the forward direction to move the head 5 in the direction of arrow X (step S17), and the A = B output of the comparison circuit 101 is checked during this time. (Step S18). Here, the counter 99 counts up one by one from the content "0" by the normal rotation of the step motor 49, and the content is always the position on the disk 2 of the head 5, that is, the recording track signal. The comparison circuit 101 indicates that when the oncoming track number of the head 5 matches the contents of the latch circuit 100, A =
Bring the B output high. Therefore, when the A = B output of the comparison circuit 101 becomes high in step S18, the controller 91 commands the stop of the motor 49 in response to this (step S19),
As a result, the head 5 is positioned at the track position held by the latch circuit 100, that is, the track (unrecorded) next to the last recorded track when viewed from the 0th track.

Next, the controller 91 issues a command to stop the disk motor 88 (step S20), and then checks whether the carrier position detector 59 is off (step S2).
1) If it is not off, display the display 92 to the effect that recording is possible (or that preparation for recording is complete) is displayed (step S22), and if it is off, use the display 92. Recording of the 50th track on disk 2 is over (disk end)
A message indicating that it is being displayed is displayed (step 23), and recording is prohibited (step S24).

On the other hand, in the previous step S03, if the cassette loading / unloading detection switch 70 is not turned on, it means that the cassette 1 has not been replaced (loaded / unloaded) or the cassette 1 has not been loaded. The controller 91 further checks whether or not the cassette presence / absence detection switch 69 is turned on (step S25), that is, the cassette 1 is turned on.
If is loaded, the process proceeds to the previous step S21. On the other hand, if the detection switch 69 is not turned on, this means that the cassette 1 is not loaded (no cassette).
Causes the display 92 to display that fact (step S26), and prohibits recording (step S22).

In the present embodiment, the preparatory operation for recording is performed as described above.

Next, the recording operation of the video signal by turning on the recording trigger switch 95 after the preparation operation for recording is completed as described above will be explained with reference to FIG.

When the preparation operation for recording is completed as described above,
The controller 91 repeatedly checks whether or not the recording trigger switch 95 is turned on by pressing the trigger button 96 up to the second step unless the power is turned off (step S31). When the trigger switch 95 is turned on, the controller 91 switches the switching switch 86 to the terminal R side (step S32), then activates the camera section 81 and the synchronizing signal generating circuit 84,
The motor control circuit 89 is instructed by the rotation of the motor 88 (step S33). As a result, the camera section 81 outputs the video signal synchronized with the sync signals HS and VS from the sync signal generation circuit 84, and the recording circuit 82 outputs the video signal to the camera section 81.
The video signal from is processed as a recording signal (FM modulation, etc.) (Of course, in this state, the recording gate in the recording circuit 82 is turned off. Therefore, the recording circuit 82 is switched to the head via the switching switch 86. 5 is connected, but no recording is done). On the other hand, the motor control circuit 89 receives the speed signal FG from the motor 88, the rotation phase signal PG from the rotation phase detector 90, and the vertical synchronization signal from the synchronization signal generation circuit 84.
Based on VS, the disk 2 controls the rotation of the motor 88 at a speed corresponding to the field or frame frequency and at a predetermined phase with respect to the vertical synchronizing signal VS, and the motor 88 has a specified speed and a specified speed. When it comes to rotate in phase, the servo lock-in signal SL is set high. Here, after the controller 91 commands the operation of the motor 88,
It repeatedly checks whether the servo lock-in signal SL from the control circuit 89 has become high (step S3
4) When the servo lock-in signal SL becomes high, a recording trigger is immediately given to the recording control circuit 83 (step S35). As a result, the recording control circuit 83 causes the recording circuit 82 to perform one field or one frame period including the first vertical synchronizing signal VS immediately after the recording trigger is given based on the synchronizing signals HS and VS from the synchronizing signal generating circuit 84. Turn on the recording gate of. As a result, a recording signal for one field or one frame is given to the head 5 through the switching switch 86 and recorded on the disk 2 rotated by the motor 88 in just one rotation. Of course, in this case, the recording position of the vertical synchronizing signal VS is a predetermined rotation position with respect to the magnetic pin 3e of the center core 3.

The recording control circuit 83 operates as described above for one field or one field.
After recording for the number of frames, the recording end signal RE is made high at the same time. On the other hand, the controller 91 repeatedly checks whether or not the recording end signal RE becomes high after the recording trigger (step S36), and when this becomes high, the head 5 is moved to the next recording position, that is,
Motor drive circuit 87 to move in the direction of arrow X for 1 TP
To the step motor 37 is instructed (step S37). At this time, the counter 99 counts one
Up. Next, the controller 91 checks whether or not the mode switching switch 97 is turned on (step S38), and if it is not turned on (that is, this means that the single shooting mode is designated), the camera unit 81 as well as,
The operation of the synchronizing signal generation circuit 84 is stopped, and the motor control circuit 89 is instructed to stop the disk motor 88 (step S39). After that, the controller 91 checks whether or not the detector 59 is turned off by the movement of the head 5 (step S40), and when it is turned off, the display 92 is displayed to indicate the end of the disk ( Step S4
1) After that, recording is prohibited (step S42).

Hereinafter, unless the switch 97 is turned off, that is, the detector 59 is turned off when the single-shot mode is designated, each time the recording trigger switch 95 is turned on, the above-described operation causes the disc 2 to move to different positions. A signal for one field or one frame is recorded.

On the other hand, if the mode switching switch 97 is turned on in step S38 (that is, this means that the continuous shooting mode is designated), the controller 91 still has the trigger switch 95 at this point. Check if is turned on (step S43). If it is not turned on, the process goes to the previous step S39. If it is turned on, check if the detector 59 is turned off. If not turned off (step S44), wait for elapse of a predetermined time Δt for determining the speed or rate for continuous recording (step S45), and then return to the previous step S35 and trigger recording again. I do. If the detector 59 is off in step S44, the controller 91 instructs the stop of the motor 88 and the operation of the camera unit 81 and the synchronizing signal generator 84 as in step S39 (step S46). , And then the process proceeds to step S41.

When the switch 97 is on, that is, when the continuous shooting mode is designated, as long as the recording trigger switch 95 is on, the above-described operation causes the disk 2 to move on the disk 2 at a predetermined speed until the detector 59 is turned off. 1 field or 1 in different positions
The video signals for frames are continuously recorded.

In this case, the continuous shooting speed or rate is determined in step S45.
It can be arbitrarily changed by making the waiting time Δt in the variable.

In addition, in this recording operation, the counter 99 counts up each time the head 5 moves to the next track after the end of one track recording, and the content indicates the current position of the head 5. Therefore, the output of the counter 99 is given to the display 92 so that the initial position of the head 5 can be displayed.

As described above, according to the present embodiment, when the cassette loading / unloading detection switch 70 is turned on by the cassette conversion (mounting / unloading), the presence or absence of the recording on the disk is searched for the recording. After storing the possible positions in the latch circuit 100, the mechanical storage means of FIG. 5 is reset.
In this case, since the latch circuit 100 is supplied with power by the back-up power supply circuit 93 'even after the power supply circuit 93 is turned off, the power supply which is a concern when resetting the mechanical storage means before the search for the recordable position is performed. It becomes possible to satisfactorily solve the problem that the head 5 cannot be reset due to a trouble.

Further, in this embodiment, in positioning the head 5 at the recording position on the disk 2 in the recording preparation operation,
Starting from the last recording position on the disk 2, that is, the 50th track position, the recording positions are recorded in the reverse order from the specified order of the tracks at the time of recording, that is, in the reverse order of the recording track numbering. Checking the presence or absence of recording, the position 1TP before the position where it is judged that there is recording first, the position before this, that is, the unrecorded position immediately after the last recorded track is counted in the order of the number of the recorded track. It is stored at 100 and the head 5 is positioned at this position. Therefore, even if the disk 2 has been recorded halfway and the tracks on the way are erased, this erased track is deleted. Head 5 is not positioned with respect to
Inconvenience associated with recording on this erased track, for example, in moving the head 5 to the next recording position, the presence or absence of recording at each moving position must be determined. However, it takes time until the next recording becomes possible, and the chance of recording is lost, or there is no inconvenience that continuous recording cannot be performed properly.

[In a modification]

One embodiment of the present invention is as described above. Next, a modification of the above embodiment will be described.

In the memory means shown in FIG. 5, in addition to the modification mentioned above, as another modification, the cassette attachment / detachment detection lever 66 is used.
Instead of detecting the cassette 1 in the holder 31, it is possible to detect the loading / unloading of the cassette 1 by detecting the opening of the holder 31 or the outer cover 35 (that is, the state shown in FIG. 3A). . In the former case, the opening 31g of the holder 31 may be closed so that the sensing layer 66a of the lever 66 senses the layer surface of the holder 31, and in the latter case, the sensing layer 66a.
66a may be configured so as to detect the edge or the hook 40 (FIG. 2) of the outer cover 35. However, in either case, the function of the cassette presence / absence detection switch 69 will be impaired.Therefore, the switch 69 is detected and is made independent of the lever 66, and is changed to a normally open type switch. A detection pin or the like is fixed to (corresponding to 69b) so that it can enter the holder 31 through the opening provided on the top plate of the chassis 11 and the lower surface of the holder 31, and the holder 31 and the outer cover 35 are closed. This pin is pushed and the contact piece (69b-69
a) It may be configured so that they are turned on when they contact each other.

Incidentally, in this case, the system controller 91 may have the following control function as a control function of the recording preparation operation. That is, the ON / OFF check of the cassette presence / absence detection switch 69 of step S25 which was performed when the cassette attachment / detachment detection switch 70 is not turned on in step S03 of FIG. 8 is carried out. It should be done between the 74 on check and step S03. Others are the same as in FIG.

In the above, the case of recording or not recording on the disk 2 is shown in descending order from the 51st track side (day incremental). However, this may be done in ascending order from the 0th track side (incremental). It is a good one. In this case, the system controller 91 is configured to perform the control function according to the operation flow as shown in FIG. still,
In FIG. 10, steps having the same reference numerals as those in FIG. 8 indicate steps having the same contents, and steps having a duty indicate corresponding steps.

In FIG. 10, the disk motor 8 is shown in step S04.
After commanding the rotation of 8, the controller 91 continuously reverses the step motor 49 until the carrier position detector 58 turns off, and stops the motor 49 when the detector 58 turns off (steps S05 'to S07). As a result, the head 5 is set to the 0th track. The controller 91 then switches 86.
After switching to the C side (step S08), the output of the recording presence / absence detection circuit 85 is checked (step S09). If this is low, the latch circuit 100 is operated directly by the latch circuit 100 if the output is high. After the step (step S10), the motor 49 is rotated forward by 1 TP (step S11). This operation is repeated until the head 5 reaches the 51st track and the carrier detector 59 is turned off (step S12 '). Thus, when the head 5 reaches the 51st track, the latch circuit is
The last recorded track number will be left at 100.

Now, when the detector 59 is turned off, the controller 91 causes the motor 49 to further rotate forward by several TPs. This is an operation for resetting the mechanical storage means shown in FIG. 5, and in this modification, the gear 71 shown in FIGS. 5 and 6 is rotated by the normal rotation of the motor 49 (the movement of the carrier 46 in the arrow X direction). In FIG. 5, in the counterclockwise direction (clockwise in FIG. 6), and in the clockwise direction in FIG. 5 (counterclockwise in FIG. 6) due to the reverse rotation of the motor 49 (movement of the arrow X of the carrier 46 in the opposite direction). ), The reset lever 73 resets the lever-62 by further moving from the 51st track of the head 5 in the disk center direction (direction of arrow X).

Then, the controller 91 commands the continuous reverse rotation of the step motor 49 (step 17 '), and at the same time, checks the A = B output of the comparison circuit 101 (step S18), and stops the motor 49 when it becomes high. Let (step
S19). This time. Since the head 5 is located at the last recorded track position on the disk 2, therefore, the controller 91 is further instructed to perform the step forward rotation for 1 TP of the motor 49 (step S27). Will be set to the unrecorded position immediately after the recorded track of. The operation after step S20 is the same as that in the case of FIG.

In the above-mentioned embodiment and the modified examples, the recording track numbers on the disk 2 are sequentially assigned from the outer peripheral side of the disk toward the center side, but the numbering may be performed conversely from the center side of the disk toward the outer peripheral side. Good, 8th-10th accordingly
The operation flow in the figure is slightly changed.

Further, although the example of the still video recording apparatus integrated with the camera section has been shown above, the camera section 81 may of course be a separate body, and a battery is also used in the power supply of the recording apparatus. In addition to the model, it may be configured to use a commercial power source.

Further, the device is not limited to the video signal recording device, but may be a device for recording information such as audio signal or data. Also, the recording method is not limited to magnetic recording. Further, the record carrier may be a disc-shaped outer drum-shaped one or a tape-shaped one (such as an 8-track audio recorder).

〔The invention's effect〕

As described above in detail, according to the present invention, as a recording device capable of converting a record carrier, even if the record carrier is replaced with the power off, it is reliably detected and a corresponding action is taken. In addition, when resetting the recording means, as much as possible fail safe is used for power supply trouble, safety is improved and it is possible to always reset the recording means in good condition. It is extremely useful in such a device.

[Brief description of drawings]

FIG. 1 is a perspective view showing a holding member such as a record carrier used in an embodiment of the present invention and a drive section on the apparatus side. FIG. 2 is a perspective view showing an embodiment of the present invention, particularly cassette loading and FIG. 3A, FIG. 3B, and FIG. 3C are exploded perspective views of the disk mounting mechanism, and are sectional views showing various states of the mechanism shown in FIG. 4A, 4B, and 4C are plan views showing details of the cover / lock portion in each state in the second illustrated mechanism. FIG. 5 is a perspective view of an embodiment of the present invention, in particular, a mechanism for detecting and storing a cassette exchange (mounting / unloading) as seen obliquely from below, and FIG. 6 is a view of an embodiment of the present invention, particularly a head. The top view of a moving mechanism. FIG. 7 is a block diagram showing the configuration of an electric circuit system according to an embodiment of the present invention. FIG. 8 is a flow chart showing the control flow of the recording preparation operation of the system controller in FIG. FIG. 9 is a flow chart showing the control flow of the recording operation of the system controller. FIG. 10 is a flow chart showing a control flow of the recording preparation operation of the system controller in a modification of the above embodiment. 1 ... Magnetic disk cassette, 2 ... Magnetic disk,
5 ... Magnetic head, 6 ... Disk rotating spindle, 11
…… Main body chassis, 21,23 …… Lock cover, 31 ……
Cassette holder, 35 …… Outer cover, 46 …… Head
Carrier, 49 ... Step motor, 54 ... Skrill,
58,59 …… Carrier position detector, 62 …… Switch operating lever, 66 …… Cassette attachment / detachment detection lever, 69 …… Cassette presence / absence detection switch, 70 …… Cassette attachment / detachment detection switch,
71 ... Gear, 73 ... Reset lever, 74 ... Outer cover lock completion detection switch, 81 ... Camera section, 82 ... Recording circuit, 83 ... Recording control circuit, 85 ... Recording presence / absence detection circuit, 86
...... Switching switch, 88 ...... Disk rotation motor, 91
...... System controller, 92 …… Display unit, 93 …… Power supply circuit, 93 ′ ... Back-up power supply circuit, 94 …… Power switch, 95 …… Record trigger switch, 97 …… Mode change switch, 99 …… Counter, 100 …… Latch circuit, 101 …… Comparison circuit.

Continuation of front page (56) Reference JP-A-57-147162 (JP, A) JP-A-59-20070 (JP, A) JP-A-58-196658 (JP, A) JP-A-59-71102 (JP , A) JP-A-54-140515 (JP, A) JP-A-61-182669 (JP, A)

Claims (1)

[Claims] 1. A recording device in which a record carrier can be exchanged, and search means for performing a search operation for determining whether or not information is recorded in each recording area on the loaded record carrier, and the search. First storage means for storing the search result by the means, an auxiliary power supply circuit for supplying power to the first storage means and holding the stored search result, and the record carrier is taken out from the device. The detection result of the detection unit stored in the second storage unit, the detection unit that detects that the detection result of the detection unit is newly installed, or the second storage unit that stores the detection result of the detection unit. In response to the control means for controlling the search means and the search means, the search result is stored in the first storage means, and the storage operation in the first storage means is completed. rear, And a resetting means for resetting the contents stored in the second storage means.