JP2002093028A - Magnetic disk recording and reproducing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the reliability of a magnetic disk recording and reproducing device by easily discriminating whether a large-sized magnetic disk cartridge or an adapter where a small-sized magnetic disk cartridge is held is loaded in the magnetic disk recording and reproducing device and preventing the magnetic disk recording and reproducing device from malfunctioning as to a magnetic disk recording and reproducing device which can be loaded with the small- sized magnetic disk cartridge by putting and holding it in the adapter so that the small-sized magnetic disk cartridge can be magnetically recorded and reproduced directly by a magnetic disk recording and reproducing device for the general large-sized magnetic disk cartridge. SOLUTION: The adapter 1 is provided with a discrimination member 14 which shows the operable range of the magnetic head that the magnetic disk recording and reproducing device is equipped with and the magnetic disk recording and reproducing device is provided with a detecting means which detects whether or not the discrimination member 14 is present and a magnetic head control means which varies the operation range of the magnetic head according to whether or not the discrimination member 14 is present.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic disk recording / reproducing apparatus for a large magnetic disk cartridge in which a small magnetic disk medium is rotatably incorporated. The present invention relates to a magnetic disk recording / reproducing system capable of reproducing.

[0002]

2. Description of the Related Art Conventionally, magnetic layers are formed on both sides of a disk-shaped base made of a flexible polyester sheet or the like fixedly supported on a center core, and magnetic recording is performed on the magnetic layers by a magnetic head while being driven to rotate. A magnetic disk cartridge containing a magnetic disk medium (a so-called floppy (registered trademark) disk) to be reproduced and stored in a flat case is provided. The recording medium for computers is mainly used because of its advantages such as easy handling and low cost. It is used as

The magnetic disk cartridge is provided with a magnetic head insertion window through which a magnetic head for magnetic recording and reproduction is brought into and out of both sides of the magnetic disk medium for external contact or close proximity. The portion is provided with a shutter member for preventing the intrusion of dust and the like when not in use.

[0004]

Since the recording medium using the magnetic disk cartridge described above is suitable for recording image information and the like, the recording medium is not limited to a computer but can be various small devices such as a digital camera (small system). )
In such a small system, a magnetic disk cartridge having a reduced size is desired. With the advent of such small magnetic disk cartridges, digital cameras and the like have been reduced in size and spread.

In a magnetic disk cartridge that is widely used, that is, a large magnetic disk cartridge, the recording capacity is increased by improving the recording method and the magnetic disk medium. If this technology is applied, the magnetic disk cartridge can be reduced in size. Is feasible,
With this small magnetic disk cartridge, recording and reproduction can be performed only by a small magnetic disk recording / reproducing device set for exclusive use.

On the other hand, for example, when processing image information or the like photographed and recorded by a digital camera by a computer, when a small magnetic disk cartridge cannot be loaded in a magnetic disk drive of the computer, the computer and a small system such as a digital camera are generally used. Must be connected by a cable, and processing such as transferring recorded information to the computer side must be performed. However, the operation of transferring information by connecting such a cable is complicated and troublesome.

Therefore, in order to enable recording and reproduction of a small magnetic disk cartridge by a magnetic disk recording / reproducing apparatus for a large magnetic disk cartridge, an adapter having an external dimension substantially matching the large magnetic disk cartridge is prepared. It is conceivable to enable recording and reproduction of a small magnetic disk cartridge by loading the adapter mounted with a disk cartridge into the magnetic disk recording / reproducing device, but in a large magnetic disk cartridge and a small magnetic disk cartridge, Since the size of the center core and the outer diameter of the magnetic disk media are different from each other, the magnetic disk recording / reproducing device requires an adapter mounted with a large magnetic disk cartridge or mounted with a small magnetic disk cartridge. Identify whether the Hama, it is necessary to change the range of movement of the magnetic head.

However, since the external dimensions of the large magnetic disk cartridge and the adapter are almost the same in terms of required functions, it is difficult to simply identify them from the magnetic disk recording / reproducing apparatus side.

In view of the above circumstances, the present invention makes it easy to identify whether a magnetic disk recording / reproducing apparatus is loaded with a large magnetic disk cartridge or an adapter mounting a small magnetic disk cartridge. To prevent malfunction of the magnetic disk recording / reproducing device,
An object of the present invention is to provide a magnetic disk recording / reproducing system with improved reliability.

[0010]

According to a magnetic disk recording / reproducing system of the present invention which solves the above-mentioned problems, an identification member indicating an operable range of a magnetic head provided in a magnetic disk recording / reproducing apparatus is provided on the adapter. And a magnetic disk recording / reproducing apparatus provided with a detecting means for detecting the presence or absence of the identification member, and a magnetic head driving means for changing an operation range of the magnetic head according to the presence or absence of the identification member. It is.

[0011] The identification member may be provided at at least one location on the front or side face in the insertion direction of the adapter, or at least one location on the bottom or top face of the adapter.

Further, the identification member may be configured to perform its function when the small magnetic disk cartridge is mounted on the adapter.

[0013]

According to the present invention, the identification member is provided on the adapter side, the detection means for detecting the presence or absence of the identification member is provided on the magnetic disk recording / reproducing apparatus side, and the operating range of the magnetic head is determined according to the presence or absence of the identification member. With the provision of the magnetic head control means for changing the value, the malfunction of the magnetic disk recording / reproducing apparatus can be prevented, and the reliability is improved.

[0014] Further, by configuring the identification member so as to function when the small magnetic disk cartridge is mounted on the adapter, safety can be further enhanced.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments of the invention shown in the drawings.

FIG. 1 is an external perspective view showing a first embodiment of an adapter used in a magnetic recording / reproducing system according to the present invention, together with a small magnetic disk cartridge.
Is a sectional view of the small magnetic disk cartridge taken along the line II-II in FIG. 1, FIG. 3 is an external perspective view of a large magnetic disk cartridge used in the magnetic recording / reproducing system according to the present invention, and FIG. FIG. 4 is a cross-sectional view along the line IV.
In addition, in each figure, in order to clarify the structure, the thickness and the like of each part are shown in a ratio different from the actual size.

The adapter 1 is formed so that the planar outer shape and thickness of the substantially flat main body 2 made of synthetic resin substantially coincide with a large-sized magnetic disk cartridge 50 shown in FIG. The recording / reproducing apparatus for a large magnetic disk cartridge (not shown) is provided so as to be inserted from the direction A. The adapter 1 is provided with a storage section 3 for detachably storing and holding a small magnetic disk cartridge 30 loaded in a digital camera or the like. The storage section 3 is formed in a concave shape on the upper surface of the adapter 1 from the side surface toward the center.

The above-mentioned large magnetic disk cartridge 50
Is a flat case 52 as shown in FIGS.
A disk-shaped magnetic disk medium 54 held by a center core 53 is rotatably accommodated in a (hard case), and liners 58 are interposed above and below the disk-shaped magnetic disk medium 54. The magnetic disk medium 54 has a disk-shaped base made of a flexible polyester sheet or the like and magnetic layers formed on both surfaces.

The case 52 is formed by fixing the inner surfaces of two shell halves in a lid-like manner. A window 56 for inserting a magnetic head is provided from the front end surface of the case 52 to the upper and lower surfaces. I have. In the center of the lower surface of the case 52, a center core hole 57 for driving a magnetic disk medium, which exposes the center core 53, is opened in a circular shape. The large magnetic disk cartridge 50 is inserted and loaded into the magnetic disk recording / reproducing apparatus from the direction A with the front end face forward.

Further, the case 52 is provided with a shutter member 59 having a substantially U-shaped cross section which is slidable in an opening and closing direction orthogonal to the direction A in order to open and close the magnetic head insertion window 56. It is assembled. When the magnetic head insertion window 56 is opened, the magnetic head is inserted into the magnetic disk medium 54.

In this case, assuming that the minimum diameter of the recording portion of the magnetic disk medium 54 is D ₁ and the maximum diameter is D ₂ , the allowable movable range of the magnetic head is L ₁ .

The magnetic disk cartridge 50
Although not shown, the magnetic disk recording / reproducing apparatus for inserting a magnetic disk has a magnetic head at the back and a drive unit below the magnetic head, and is provided on the center core 53 of the magnetic disk medium 54 of the inserted magnetic disk cartridge 50. When the rotation drive member (spindle) of the drive unit is engaged and rotationally driven, and the shutter member 59 is opened, the magnetic head approaches the recording surface of the magnetic disk medium 54 through the magnetic head insertion window 56 of the case 52. Recording and reproduction.

On the other hand, the small magnetic disk cartridge 30
1 and 2, the diameter of the magnetic disk medium 54 of the large magnetic disk cartridge 50 is smaller than that of the magnetic disk medium 54 of the large magnetic disk cartridge 50 in a flat case 32 (hard case) thinner than the case 52 of the large magnetic disk cartridge 50. And a small magnetic disk medium 34 having a small size. The magnetic disk medium 34 has the center core 3
3 and rotatably accommodated therein, and liners 38 are interposed above and below it. This magnetic disk medium 34
Is a disk-shaped base made of a flexible polyester sheet or the like in which magnetic layers are formed on both surfaces.

The case 32 is formed by fixing the inner surfaces of two shell halves in a lid-like manner.
2 is provided with a magnetic head insertion window 36 cut out so as to communicate from the front end surface to the upper and lower surfaces. The center core 33 is provided at the center of the lower surface of the case 32.
The center core hole 37 for driving the magnetic disk medium is exposed in a circular shape, and the annular projection 4 projecting downward is formed on the inner surface of the case 32 above the center core hole 37.
0 is formed and inserted inside the center core 33 to regulate the movement of the magnetic disk medium 34 in the radial direction.

Further, a shutter member 39 which is slidable in an opening / closing direction orthogonal to the insertion direction A of the adapter 1 is attached to the case 32 to open / close the magnetic head insertion window 36, and the sliding member is slidable. Moving range case 32
A shallow sliding groove is formed on the surface of. Then, when the shutter member 39 moves in the opening direction and the magnetic head insertion window 36 opens, the magnetic head can be approached to the magnetic disk medium 34.

The shutter member 39 is formed to have a substantially U-shaped cross section. The shutter member 39 is provided so as to cover the upper surface, the front end surface, and the lower surface of the magnetic head insertion window portion 36 at the closed position, and when the shutter member slides. The window 36 for inserting a magnetic head provided in the case 32 is opened.

In the small magnetic disk cartridge 30, if the minimum diameter of the recording portion of the magnetic disk medium 34 is d ₁ and the maximum diameter is d ₂ , the allowable movable range of the magnetic head is L ₂ , and the large magnetic disk cartridge 50 Are all smaller than the minimum diameter D ₁ and the maximum diameter D ₂ of the recording portion of the magnetic disk medium 54 and the allowable movable range L _{1 of the} magnetic head.

Next, the adapter 1 has a storage section 3 for detachably storing and holding the small magnetic disk cartridge 30, and a position corresponding to the center core hole 37 of the small magnetic disk cartridge 30 stored in the storage section 3. A first opening 5 into which the rotary drive member of the magnetic disk drive can be inserted, and a position corresponding to the magnetic head insertion window 36 of the small magnetic disk cartridge 30 housed in the housing 3. And a second opening 6 into which a magnetic head can be inserted. Therefore, the adapter 1 is loaded into the magnetic disk recording / reproducing apparatus with the small magnetic disk cartridge 30 stored in the storage section 3 so that recording and reproduction can be performed on the magnetic disk medium 34 of the small magnetic disk cartridge 30 by the magnetic head. .

The first opening 5 opens in a circular shape at the center of the bottom surface 3a of the storage portion 3 and opens at the same position and the same shape as the center core hole 57 of the large magnetic disk cartridge 50 described above. . Further, the second opening 6 is provided in the main body 2.
Is formed in a tunnel shape rearward from the rectangular opening of the front end face 2a toward the storage section 3, and the rear end section is formed on the front face 3b of the storage section 3.
It is open to. The opening shape of the front end face 2a of the main body 2 in the second opening 6 is provided at least in the same position and in the same shape as the opening shape of the magnetic head insertion window 56 of the large magnetic disk cartridge 50.

The accommodating portion 3 of the adapter 1 inserts and holds the small magnetic disk cartridge 30 from a side surface direction perpendicular to the direction A of insertion into the magnetic disk recording / reproducing apparatus. In part 3,
A shutter opening / closing projection 11 as a shutter opening / closing means is provided. The shutter opening / closing projection 11 opens a shutter member 39 that opens and closes the magnetic head insertion window 36 of the small magnetic disk cartridge 30 in response to the insertion operation of the small magnetic disk cartridge 30, and when the insertion is completed, the shutter member 39 is opened. The shutter 39 is held in the open state, and the shutter member 39 is operated in the closed state with the take-out operation. Further, the storage section 3 includes a holding projection 12 as guide means for guiding the inserted small magnetic disk cartridge 30 to the storage and holding position.

More specifically, a concave groove 41 extending in the direction of insertion into the adapter 1 is provided on the front end surface of the small magnetic disk cartridge 30, and an engaging step 42 also extending on the rear end surface is also formed in the insertion direction. Have been. On the other hand, on the front surface 3b of the storage unit 3, the shutter opening / closing protrusion 11 is provided on one side of the second opening 6, and the holding protrusion 12 is provided on the opposite side.
The small magnetic disk cartridge 30 extends in the insertion direction of the
Is provided so as to be engageable with the concave groove 41. The shutter opening / closing projection 11 can be engaged with one end of the shutter member 39 through the concave groove 41 of the small magnetic disk cartridge 30.
At the time of insertion into the storage section 3, the shutter member 39 is locked and opened. A holding step 13 is provided on the rear surface 3c of the storage section 3 so as to extend in the lateral direction and engage with the engaging step 42 of the small magnetic disk cartridge 30.

The small magnetic disk cartridge 3
0, the front and rear concave grooves 41 and the engaging step portions 42, and the storage portion 3
By engaging the shutter opening / closing convex portion 11, the holding convex portion 12, and the holding step portion 13 on the front and rear surfaces of the small magnetic disk cartridge 30, the insertion of the small magnetic disk cartridge 30 into the adapter 1 is performed, and the storage portion 3 of the small magnetic disk cartridge 30 is accommodated.
The upper and lower parts are prevented from coming off, and the uneven shape of the front and rear portions is different, thereby preventing the small magnetic disk cartridge 30 from being erroneously inserted in the front and back and front and rear directions.

The adapter 1 has a front end face 2 of the main body 2.
A shutter member 10 that opens and closes the second opening 6 formed in “a” is provided. This shutter member 10
This corresponds to a shutter member 59 that opens and closes the magnetic head insertion window 56 in the large magnetic disk cartridge 50, and is similarly opened and closed according to the insertion operation by a shutter opening and closing mechanism installed in the magnetic disk drive. The installation of the shutter member 10 may be omitted.

Further, the front end face 2 of the main body 2 of the adapter 1
a is provided with an identification member 14 for identifying on the magnetic disk recording / reproducing apparatus side that the adapter 1 has been inserted and loaded into the magnetic disk recording / reproducing apparatus. The magnetic disk recording / reproducing apparatus is provided with a detecting means for detecting the presence or absence of the identification member 14, and when either the large disk cartridge 50 or the adapter 1 is inserted and loaded into the magnetic disk recording / reproducing apparatus. when the magnetic disk recording and reproducing apparatus can not detect the identification member 14, it is determined that the large-sized disk cartridge 50 is inserted loaded, the operating range of the magnetic head is controlled to be in the L _1. On the other hand, when the magnetic disk recording and reproducing apparatus detects an identification member 14, it is determined that the adapter 1 was mounted the small disk cartridge 30 is inserted loaded, controlled so that the operating range of the magnetic head is the L ₂ I do.

As the identification member 14 provided on the adapter 1 side and the corresponding detection means provided on the magnetic disk recording / reproducing apparatus side, for example, the following are conceivable.

(1) The identification member 14 is a hole or a notch, and the detecting means is a limit switch type sensor capable of mechanically contacting the hole or the notch.

(2) The identification member 14 is a light reflecting member, and the detecting means is a light emitting element / light receiving element. Light emitted from the light emitting element is reflected by the light reflecting member and received by the light receiving element.

(3) Assume that the identification member 14 is a semiconductor element on which information is recorded, and the detecting means is capable of detecting the information.

The identification member 14 of the adapter 1 may be provided not only on the front face of the main body 2 as shown in FIG. 1 but also on the side face in the insertion direction, or may be provided on at least one of the front face or the side face in the insertion direction. . Also, the identification member 14 is the adapter 1
It may be provided at least at one location on the bottom surface or the top surface of the main body 2 of FIG. Although the identification member is provided on the large magnetic disk cartridge 50, the identification member 14 provided on the adapter 1 is provided at a position different from the installation position of the identification member provided on the large magnetic disk cartridge 50.

As is clear from the above description, according to the present embodiment, the identification member 14 is provided on the adapter 1 side, and the detection means for detecting the presence or absence of the identification member 14 is provided on the magnetic disk recording / reproducing apparatus side. By providing the magnetic head control means for changing the operating range of the magnetic head according to the presence or absence of the identification member 14, malfunction of the magnetic disk recording / reproducing apparatus can be prevented, and reliability is improved.

Next, FIG. 5 is an external perspective view showing a second embodiment of the adapter used in the magnetic recording / reproducing system according to the present invention in a state where a small magnetic disk cartridge is housed.

In the present embodiment, the main body 2 of the adapter 1
A plurality of holes 2 are formed on the upper surface of the
4 is provided as an identification member.
Below the 4, a shielding member 25 of the hole 24 is provided so as to be able to protrude and retract into the storage section 3. And this shielding member 25
The first which shields the hole 24 while projecting into the storage part 3
And a second position in which the hole 24 is immersed from the inside of the storage portion 3 and is slidable, and is urged toward the first position by a spring (not shown). I have.

Therefore, when the small magnetic disk cartridge 30 is not stored in the storage section 3 of the adapter 1, the shielding member 25 is at the first position and shields the hole 24. Does not work. Therefore, even if the adapter 1 in which the small magnetic disk cartridge 30 is not stored in the storage section 3 is loaded into the magnetic disk recording / reproducing device, the magnetic disk recording / reproducing device does not matter.

On the other hand, the small magnetic disk cartridge 30
Since the shielding member 25 is pushed by the small magnetic disk cartridge 30 and moves to the second position to open the hole 24 as the
The hole 24 will function as an identification member,
What is necessary is just to provide a detecting means capable of detecting the hole 24 on the magnetic disk recording / reproducing apparatus side.

In the present embodiment, the hole 2 as an identification member
4 is configured so as to exhibit a function in accordance with mounting of the adapter to the small magnetic disk cartridge 30 by the mounting of the adapter, thereby further improving the safety.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing a first embodiment of an adapter used in a magnetic recording / reproducing system according to the present invention, together with a small magnetic disk cartridge.

FIG. 2 is a sectional view of the small magnetic disk cartridge taken along the line II-II in FIG. 1;

FIG. 3 is an external perspective view of a large magnetic disk cartridge used in the magnetic recording / reproducing system according to the present invention.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

FIG. 5 is an external perspective view showing a second embodiment of the adapter used in the magnetic recording / reproducing system according to the present invention in a state in which a small magnetic disk cartridge is housed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Adapter 2 Main body 3 Storage part 5 1st opening 6 2nd opening 11 Shutter opening / closing convex part 12 Holding convex part 13 Holding step part 14 Identification member 24 Hole (identification member) 25 Shielding member 30 Small magnetic disk cartridge 32 Case 34 Magnetic disk medium 36 Window for inserting magnetic head 39 Shutter member 41 Groove 42 Engagement step 50 Large magnetic disk cartridge

Claims (1)

[Claims] A small magnetic disk cartridge rotatably containing a small magnetic disk medium can be recorded and reproduced by a magnetic disk recording / reproducing apparatus for a large magnetic disk cartridge rotatably containing a large magnetic disk medium. A magnetic disk recording / reproducing system, wherein an adapter having an outer dimension substantially matching the small magnetic disk cartridge and the large magnetic disk cartridge is provided, and the adapter having the small magnetic disk cartridge mounted thereon is mounted on the magnetic disk recording / reproducing system. In the magnetic disk recording / reproducing system capable of recording / reproducing the small magnetic disk cartridge by being loaded into a device, the adapter is provided with an identification indicating an operable range of a magnetic head provided in the magnetic disk recording / reproducing device. A material is provided, and the magnetic disk recording / reproducing device is provided with a detecting means for detecting the presence or absence of the identification member, and a magnetic head control means for changing an operation range of the magnetic head according to the presence or absence of the identification member. A magnetic disk recording and reproducing system.