JPH11126237A - Information recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To actualize a detecting means with simple constitution by arranging a holding means which holds a recording medium at a specific position when the recording medium is mounted and a means which detects whether or not there is the recording medium on a mount base by using part of the holding means on the mount base. SOLUTION: The mount base 30 is supported on a guide shaft 31 and in the process wherein the mount base 30 is moved linearly and reciprocally along an information track, i.e., the longitudinal direction, information is recorded and reproduced by an optical head. The mount base 30 is provided with a 1st holding means which holds an optical card C on a 1st reference surface 30a as the reference plane of the mount base 30 and a 2nd holding means 30b which settles the optical card C on a 2nd reference surface 30b as a vertical reference surface for card positioning formed on the mount base 30 so that the card information track becomes parallel to the moving direction of the optical head. When the optical card C is inserted, the attitude of a depression member 41 changes and a light shield part 41a is put over an optical detector 44 to detect the optical card C being inserted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

2. Description of the Related Art In general, information recording / reproducing apparatuses include a magnetic system and an optical system, and among them, an optical information recording / reproducing apparatus has recently attracted attention. As a device for recording / reproducing information using a light beam, there are an information recording / reproducing device such as a CD and a laser disk for rotating a disk-shaped recording medium, and an optical card type for reciprocating a card-shaped recording medium. Information recording and playback device,
Further, an information recording / reproducing apparatus using an optical tape is known.

[0002] These devices are used properly depending on the purpose. Among them, information recording / reproducing devices employing an optical card have attracted attention because they are particularly excellent in storage capacity and portability of a recording medium. Are gathering. Tracks are formed at intervals of several microns on the optical card employed here. In this apparatus, spots of several microns are formed between the tracks by a light beam to record / reproduce information. Do. At this time, recording / reproducing is performed by driving the mounting table on which the optical card is mounted and the optical head in directions orthogonal to each other and irradiating the optical beam onto the optical card while following the light beam in parallel with the track. A device has been devised.

FIG. 9 shows such an information recording / reproducing apparatus.
As shown in the figure, the mounting table S on which the rectangular optical card C is mounted
Is linearly reciprocated along an information track T of a card, and an optical head H is moved in a direction crossing the information track T. A mounting table of such a conventional information recording / reproducing apparatus has a card C as shown by reference numeral 1 in FIG.
And is movably supported by a bearing or a slide bearing (not shown) along a guide shaft 11 provided in parallel with the X direction.
The mounting table 1 has a movement stroke slightly longer than the card length in the X direction, and is linearly reciprocated by a driving system, for example, a belt driving system (not shown) using a voice coil motor or a servomotor.

In order to reliably record / reproduce information, it is necessary that the card C be accurately positioned and not displaced when reciprocating linearly. Therefore, the mounting table 1 is provided with a card holding mechanism.
Here, the long side edge C1 of the card C parallel to the information track T is pressed by the urging member 12, and the other long side edge of the opposite card C facing the information track T is parallel to the guide shaft 11. Is pressed against a vertical reference plane (not shown) of the mounting table formed in the above.

[0005] Further, a pressing member 14 is provided on the mounting table 1 at both long side edges of the card C and opposed to the card surface, and the pressing member 14 is supported by a shaft 13. The card C is pressed and gripped from above by pressing the spring 15 toward the upper surface (horizontal reference surface) of the mounting table 1. In addition, these pressing members 14 not only serve to hold the card, but also correct the warpage of the card,
It also has the role of optically ensuring recording / reproduction.

In such an information recording / reproducing apparatus, when performing recording / reproducing on an optical card, the optical card C is used as shown in FIG.
As shown in (1), it is inserted from an opening 5 provided on the side of the device 3 and is conveyed to the mounting table 1 by a conveyance system including a roller pair indicated by reference numeral 4. When the card is inserted, the mounting table 1 is in the standby position (shown by a solid line) and
The lock member 16 is locked so as not to move.

As shown in FIG. 11, the card is pressed against the opposite vertical reference surface by the urging member 12 by the above-described transport system, and the pressing member 14 and the upper surface of the mounting table 1 are connected to each other. And the card is pushed until the short side edge C2 of the leading end of the card is pressed against the butting portion 1a on the back side of the mounting table 1. Thus, at this position, the loading of the card C on the mounting table 1 is settled. After the card loading is settled, the lock 16 is released by a drive system (not shown) such as a solenoid or a motor, and the mounting table 1 moves to shift to a recording / reproducing operation.

When the flash card C is held on the mounting table 1 in a state where the card C does not hit the hitting portion 1a, as shown in FIG. Because of the offset, the acceleration / deceleration area of the head covers the recording area of the card, and accurate recording / reproduction cannot be performed. Therefore, in order to accurately position the card on the abutting portion 1a, there is a method of increasing the force for pushing the card C into the mounting table 1 and the pushing time to provide an operation margin. In order to improve the performance, a method of providing a card settling detecting means and using it as a trigger for unlocking is adopted as in the examples of FIGS.

In the specific example shown in FIG. 11, near the card stabilizing butting surface 1 a provided on the mounting table 1,
A mechanical switch 17 is arranged, and at a position where the card hits the abutting surface 1a and the loading is settled, a switch as a card settling detection system is pressed to detect the card settling.

In the specific example shown in FIG. 12, a slider member 18 which is movable on the mounting table 1 in the insertion direction when it comes into contact with the leading end C2 of the card is provided. Further, a light shielding portion 18a provided at the tip of the slider member 18
And an optical detector 20 for detecting the position is provided. Then, the optical card C is moved to the stabilizing abutment surface 1a.
At the position where the light detector 18 a comes into contact with the optical detector 2.
0 is shaded and card settling is detected. When there is no card, the slider member 18 is returned in the insertion direction by the urging member 19, and the light shielding portion 18 a is separated from the optical detector 20.

By providing such a card settling detection system, it is possible to prevent a bad setting of the card from adversely affecting recording / reproduction.

[0012]

However, in the above-mentioned conventional example, since a mechanical switch and a dedicated mechanism for detection must be provided, the load is considerably increased in cost. The present invention has been made based on the above circumstances, and has as its object to realize a detecting means with a simpler configuration, and to further provide an inexpensive information recording / reproducing apparatus.

[0013]

According to the present invention, a rectangular card-shaped information recording medium is held on a mounting table, and the mounting table and the optical head are relatively moved. In the information recording / reproducing apparatus for performing recording / reproducing of information by using, the mounting table uses a holding unit for holding the recording medium at a predetermined position when the recording medium is mounted, and a part of the holding unit. Means for detecting the presence or absence of the recording medium in the mounting table.

With this configuration, it is possible to configure a simple detecting means for detecting the setting of the card on the mounting table without increasing new components, and to provide an inexpensive information recording / reproducing apparatus. it can.

[0015]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be specifically described with reference to FIGS. (First Embodiment) First, a first embodiment shown in FIGS. 1 and 2 will be described. Here, FIG. 1 shows a state of the mounting table before mounting the card, and FIG. 2 shows a state of the mounting table after mounting the card. In each drawing, the upper part (a) is a plan view, and the lower part (b) is a side view.

As shown in FIG. 1, the mounting table 30 is supported by a guide shaft 31 via a bearing pair or a slide bearing (not shown), and is guided in the longitudinal direction thereof. Numeral 30 is linearly reciprocated by driving means (not shown) such as a voice coil motor in the same information track direction as the longitudinal direction, and in the process, information is recorded / reproduced by an optical head (not shown). Do. In this case, the optical head moves linearly in a direction orthogonal to the longitudinal direction, and aligns a light beam with a desired information track.

On the mounting table 30, an optical card C is mounted.
A first holding unit for holding the card information track T with respect to a first reference plane which is a reference plane for positioning a card formed on the mounting table 30 so that the moving direction of the optical head is parallel to the card information track T. Reference plane 30 which is a vertical reference plane for
b is provided with a second holding means for setting the card.

A holding plate 32 for pressing the surface of the optical card C, which is located on both sides of the mounting table 30 and has the first reference surface formed on the lower surface (only reference numeral 32a is shown), And pressing means 34, 3 for pressing the optical card C against the holding plates 32, 33 from the opposing card back side as first holding means.
5 are configured. These holding plates are located to face each long side edge of the optical card, and the pressing means 34, 35
A plurality is provided side by side in the direction of each long side edge. Since the pressing means can be configured within the thickness of the mounting table 30 by pressing at a plurality of places, it is possible to reduce the thickness and exert an advantage of applying a uniform pressing force in the longitudinal direction of the optical card.

In this embodiment, each pressing means 3
The mounting table 30 is rotatable about a rotation shaft 36.
, And is constituted by a rotation pressing piece attached thereto. A coil spring 37 is attached to the rotating shaft 36 and urges the distal ends of the pressing pieces 34 and 35 so as to press them in the directions of the holding plates 32 and 33.

Among the pressing pieces, when the optical card is inserted, the pressing piece (pressing means 35) located at the innermost side of the mounting table 30 extends around the rotation shaft 36 in the direction opposite to the tip. The light-shielding portion 35a is provided and has an L-shape as a whole. An optical detector 38 is provided below the mounting table 30 in the vicinity of the light-shielding portion 35a.

When the optical card C is not on the mounting table 30, as shown in FIG.
Are in a state of not shielding the optical detector 38 from light. Then, when the optical card C is inserted on the mounting table 30, as shown in FIG. 2, the posture of the pressing piece (the pressing means 35) changes depending on the card thickness, and the light shielding portion 35a
Blocks light from the optical detector 38, and the optical card C
Is detected.

In order to increase the detection accuracy of the position setting of the optical card C, the pressing piece constituting the detecting means in combination with the optical detector 38 is located as close as possible to the abutment surface 30a on the back side of the mounting table 30. Desirably. For this reason, a light blocking portion, that is, a detecting device is not provided in the pressing device 34 on the front side, and a light blocking portion 35a is provided in the pressing device 35 on the back side.

As described above, since a part of the mechanism for holding the optical card C is also used as a part of the optical card detecting means, the mechanical switch and the slider mechanism in the conventional example become unnecessary. Can be constructed at low cost. On the other hand, with respect to the side of the mounting table 30, the optical card C
The second holding means for pressing the long side edge C1 of the optical card C from the opposite side to the vertical reference plane 30b for performing the positioning and for setting the position is used to secure the setting stability. , Pressing members 40, 41 provided at least at two positions, a front side and a back side, with respect to at least a card insertion direction;
And it is comprised from the coil springs 43 and 43 which urge this.

The pressing means 3 in the first holding means
Similarly to FIGS. 4 and 35, each pressing member is formed so as to be rotatable about a rotation shaft 42, and a coil spring 4
3 and 43, respectively. Of these pressing members, when inserting a card, the pressing member 41 which is the deepest side of the mounting table 30 is provided with a light shielding portion 41a as in the case of the pressing means 35. An optical detector 44 is provided at the position.

When the optical card C is not on the mounting table 30 as shown in FIG.
1a is separated from the optical detector 44 so as not to be shielded. Then, when the optical card C is inserted, as shown in FIG. 2, the posture of the pressing member 41 is changed by the optical card C, and the light shielding portion 41 a overlaps the optical detector 44 to shield the light. , Optical detector 4
4, the insertion of the optical card C can be detected.

The change in the attitude of the first or second holding means is used to make the optical card detection means function. When the insertion of the card is confirmed by this, the lock (not shown) of the mounting table 30 is released. The mounting table 30 is moved, and the operation shifts to a recording / reproducing operation. Although not shown in this embodiment, since the optical card detection means has already confirmed that the optical card C is present on the mounting table 30, another optical card is inserted again. Even if an attempt is made, a control system in the apparatus can be configured to restrict insertion so that the transport system does not operate.

When the power of the apparatus is turned on, an initialization operation is performed to check the state of the apparatus. At this time, when the optical card C is present on the mounting table 30, the optical card detecting means performs this operation. It can also be used as a means to confirm that. Here, when the presence of the optical card C is confirmed, the above-described control system ejects the optical card C once, continues the predetermined initialization operation, or notifies the outside of the presence of the optical card C. L provided on the exterior of the device
Processing for turning on a display means such as an ED is also performed.

(Embodiment 2) Next, a second embodiment will be described with reference to FIGS. Note that FIG.
4A and 4B are a plan view and a side view showing a state of the mounting table before mounting the card, and FIGS. 4A and 4B are plan views showing a state of the mounting table after mounting the card. It is a figure and a side view. FIG. 5 is a circuit diagram of the optical card detecting means.

As in the first embodiment, first mounting means for holding the optical card C in a plane (contacting the surface of the optical card C with a reference plane) is mounted on the mounting table 50; Moving direction of optical head (not shown) and card information track T
And a second holding means for setting the position of the optical card C with respect to a vertical reference plane for card positioning formed on the mounting table 50 so that the optical card C is parallel to the optical card C.

When the surface of the optical card C is in contact with the reference plane, the holding plate 5 holds the optical card C in a plane.
2, 53 are provided by lower surfaces (52a: only one of them is shown), and are provided on both sides of the mounting table 50 along the long side edges thereof.
At a position facing the holding plate, the optical card C includes a plurality of pressing members 54 for pressing the optical card C against the holding plates 52 and 53 from the back side.

The pressing member 54 is formed of an elastic leaf spring having electric conductivity, is arranged in parallel along the long side edge, and is arranged so that the card insertion direction and the longitudinal direction of the leaf spring are parallel. I have. In addition, when the optical card C is inserted among the pressing members 54, as shown in FIG. 3, the mounting table 50 has an electrical conductivity corresponding to the pressing member that is the deepest side of the mounting table 50. Contact point 55 is provided.

When the optical card C is not on the mounting table 50, the leaf spring and the contact 55 are in contact with each other as shown in FIG. 3, but when the card C is inserted into the mounting table 50. As shown in FIG. 4, the leaf spring 54 is bent by the thickness of the card and the contacts are separated from each other, so that a switch function can be performed. In this embodiment, the leaf spring as the pressing member 54 and the contact 55 are each connected to a circuit as shown in FIG. 5 by a cable. This circuit forms a simple switch circuit,
It serves as card detection means for identifying the presence or absence of a card.

Similarly to the first holding means, the second holding means is formed of an elastic leaf spring 56 having electrical conductivity, is located on one side of the mounting table 50, and has a vertical reference surface on the opposite side. (Denoted by reference numeral 50b) to press the side edge of the optical card C. Moreover, the mounting table 50 is also used here.
A contact 57 is provided on the mounting table 50 at a position corresponding to the leaf spring 56 on the back side of the plate spring. When the leaf spring 56 bends, a mechanical switch circuit is formed between the leaf spring 56 and the leaf spring. Has formed.

(Embodiment 3) The third embodiment has a configuration shown in FIGS. That is, FIG. 6 is a perspective view showing the mounting table 60 turned upside down, and FIGS. 7 and 8 are cross-sectional views taken along the line AA of FIG. 7 shows the state of the card detecting means before the card is mounted, and FIG. 8 shows the state of the detecting means after the card is mounted.

Here, similarly to the first embodiment, holding plates 62 and 63 (the lower surfaces of which serve as reference planes) for holding the optical card C in a plane are provided on both sides of the mounting table 60. Also, a first holding means for pressing the optical card C against the holding plates 62 and 63 is provided. Further, although not shown, similar to the above-described embodiment, the moving direction of the optical head and the optical card Second holding means for positioning the optical card C on a card positioning reference plane formed parallel to the information track T is provided.

As shown in FIG. 6, the first holding means presses the surface of the card C against the reference plane and presses from the back side of the optical card C facing the reference plane to hold the card C in a planar manner. It is composed of pressing means. The pressing means is composed of four elastic wires 65 and eight rollers 64, each of which is bent in a substantially ω shape.
Each of the two rollers 64 is pivotally supported at both ends of an elastic wire 65 extending in a direction perpendicular to the card insertion direction, and a central portion of the elastic wire 65 is formed on the mounting table 60. It is locked by a stop 66.

As described above, the two rollers 64 paired with the same elastic wire are arranged in four pairs in the card insertion direction along each long side edge on both sides of the mounting table 60. In the biasing force of the elastic wire 65,
It is pressed against the reference plane. In this embodiment, both ends of the elastic wire 65 are independently inserted into the groove 68 formed on the mounting table 60 so as to bend in the card thickness direction but not in the card insertion direction. Have been. Further, the roller 64 is formed so that the peripheral edge thereof has an R curved surface so that the edge thereof does not hit the surface of the optical card C even when the elastic wire 65 is bent.

Further, the rollers 64 as these pressing members
7 and 8, when the optical card C is inserted, the contact 67 having electrical conductivity is provided on the mounting table 60, as shown in FIGS. Are provided, and the elastic wire 65 used here is made of a material having electric conductivity.

As shown in FIG. 7, when the optical card C is not on the mounting table 60, the contact 67 and the wire 65 come into contact with each other by the urging force of the elastic wire 65, and are electrically connected. Although in the conductive state, as shown in FIG. 8, when the optical card C is inserted into the mounting table 60, the elastic wire 65 bends due to the card thickness, and the elastic wire 65 and the contact 67 are separated from each other. become. Thus, similarly to the second embodiment, the elastic wire 65 as the pressing means and the contact 67 form a part of the switch circuit. Card detection means that functions to identify the card.

[0040]

According to the present invention, as described in detail above, information is recorded / reproduced by holding a rectangular card-shaped information recording medium on a mounting table and relatively moving the mounting table and the optical head. In the information recording and reproducing apparatus that performs the above, the mounting table is a holding unit for holding the recording medium at a predetermined position when the recording medium is mounted, and a unit for detecting the presence or absence of the recording medium in the holding unit Therefore, the information recording / reproducing apparatus configured here uses the card detecting means for detecting the setting of the optical card on the mounting table, and uses a part of the holding means for holding the optical card on the mounting table. Thus, the configuration can be simplified, and as a whole, the effect of being simple and inexpensive to manufacture can be obtained.

[Brief description of the drawings]

FIG. 1 is a diagram showing a state before a card is placed according to a first embodiment of the present invention.

FIG. 2 is also a state diagram after a card is placed.

FIG. 3 is a diagram showing a state before placing a card according to a second embodiment of the present invention.

FIG. 4 is also a state diagram after a card is placed.

FIG. 5 is a circuit diagram of a card detecting unit according to the second embodiment.

FIG. 6 is an inverted perspective view of a mounting table according to a third embodiment of the present invention.

FIG. 7 is also a state diagram before a card is placed.

FIG. 8 is also a state diagram after a card is placed.

FIG. 9 is a plan view showing a configuration of a conventional example.

FIG. 10 is a side view showing a configuration of a conventional example.

FIG. 11 is a perspective view showing a mounting table of a conventional example.

FIG. 12 is a perspective view showing another mounting table of the conventional example.

FIG. 13 is an explanatory diagram for explaining a defective state of card stabilization.

[Explanation of symbols]

 C optical card 30, 50, 60 mounting table 32, 33, 52, 53, 62, 63 holding plate 34, 35 pressing means (pressing piece) 40, 41 biasing member 38, 44 optical detector 54, 56 leaf spring 55, 57, 67 Contact 64 Pressing roller 65 Elastic wire 66 Locking part 68 Groove

Claims (9)

[Claims] 1. An information recording / reproducing apparatus for recording / reproducing information by holding a card-shaped information recording medium on a mounting table and relatively moving the mounting table and the optical head, wherein the mounting table includes: Holding means for holding the recording medium at a predetermined position when the recording medium is mounted, and means for detecting the presence or absence of the recording medium on the mounting table using a part of the holding means; An information recording / reproducing apparatus characterized in that: 2. The storage device according to claim 1, wherein the holding unit is configured to contact the first surface of the card-shaped recording medium with a first reference surface on a mounting table, and to oppose an edge of the recording medium. A second means for holding the recording medium in contact with a second reference surface provided on the mounting table,
2. The information recording / reproducing apparatus according to claim 1, wherein at least one of the means has means for detecting a posture of the means when holding the recording medium. 3. The method according to claim 1, wherein the first holding unit changes a posture so as to be displaced in a thickness direction of the recording medium depending on the presence or absence of the recording medium on the mounting table.
3. The information recording / reproducing apparatus according to claim 2, wherein the displacement is optically or electrically detected. 4. The method according to claim 1, wherein the second holding unit changes a posture of the recording medium so as to be displaced in a short side direction depending on the presence or absence of the recording medium on the mounting table.
3. The information recording / reproducing apparatus according to claim 2, wherein the displacement is optically or electrically detected. 5. The card according to claim 1, wherein the detection unit includes a conductor that is in an electrically conductive state when the first holding unit and the first reference surface of the mounting table are in contact with each other. 4. The information recording / reproducing apparatus according to claim 2, wherein the conductor portions contact each other when the card-shaped recording medium is not mounted on the mounting table, and are separated when the card is mounted. apparatus. 6. The card according to claim 6, wherein the detecting means includes a conductor portion which is in an electrically conductive state when the detecting means comes into contact with the second holding means and the second reference surface of the mounting table. 5. The information recording / reproducing apparatus according to claim 2, wherein the conductor portions contact each other when the card-shaped recording medium is not mounted on the mounting table, and conversely, separate when the card is mounted. apparatus. 7. A conductor according to claim 5, wherein the conductor of the first or second holding means is made of a leaf spring or a spring wire for applying an urging force for holding the recording medium. 7. The information recording / reproducing device according to item 6. 8. A plurality of the first or second holding means are provided side by side with respect to an insertion direction of the recording medium to the mounting table, and the detection means is provided on the mounting table with respect to the insertion direction. The information recording / reproducing apparatus according to any one of claims 2 to 7, wherein the information recording / reproducing apparatus is arranged corresponding to one of the first or second holding means provided on the innermost side of the information storage medium. 9. The first reference surface includes a holding plate for pressing a flat surface of the recording medium, and the first holding unit is configured to hold the first reference surface with respect to the holding plate from a side facing the reference surface. Biasing the recording medium, and pressing means for gripping between the reference surface, the pressing means, one end is fixed to the mounting table so as to be orthogonal to the insertion direction of the recording medium, and the other end A wire that can be bent in the thickness direction of the recording medium and is an electrically conductive material whose bending is restricted in the insertion direction; and a wire provided at the tip thereof and turned around the wire in the insertion direction with the wire as an axis. 8. The information recording / reproducing apparatus according to claim 7, wherein the information recording / reproducing apparatus comprises a roller which is movable and has a curved surface also in a direction orthogonal to the direction.