JPS60242564A - Magnetic disk package - Google Patents

Abstract

PURPOSE:To inhibit securely data from being recorded on a magnetic disk by displaying fixedly the number of recorded data at an additional recording disablement position of a recording device in which the package is loaded. CONSTITUTION:Circular openings 36 and 38 are formed in an upper body 22 and a lower body 24 at corresponding positions and an annular member 40 is fitted them. The member 40 is so shaped that when the package 20 is loaded in a general image recording device, a driving spindle 100 for a display counter for the number of recorded data rotates and its tip part 102 is inserted into an openin 60 to fit a key 106 in a key groove 66. Then, the member 40 is so arranged that the groove 66 is at an angle position indicating a counted value corresponding to the additional recording disablement position of the display counter for the number of recorded data, a lock member 302 locks tightly part of a notch 300 corresponding to said position, thereby fixing the groove 66 at the display position of the counted value. Thus, the disk 10 is placed in a recording inhibition state.

Description

[Detailed description of the invention] Pihanggong 1 The present invention relates to a magnetic disk package.

For example, small-diameter magnetic disks used in image recording devices such as electronic still cameras are usually handled in a molded package made of plastic or the like. This package is equipped with a counter that displays the number of recorded images, which shows how far images have been recorded on the magnetic disk, and a recording device such as a camera reads the displayed value of this counter and sequentially records images on unrecorded tracks. and increments the counter to the recorded track number.

For example, if a supplier provides a consumer with a magnetic disk on which a set of still images is recorded, the contents of the recorded magnetic disk, that is, the images, may be damaged due to incorrect operation of the consumer's device. It is important to take measures to prevent the magnetic disk package from being intentionally destroyed. For example, a person may try to record a new image on an unrecorded track by loading a magnetic disk purchased from a video software supplier into an electronic camera, or a user may record a different image due to incorrect operation of a recordable playback device. there is a possibility.

Furthermore, if the counter display is correct, the recorded green portion will not normally be re-recorded, but if the counter display is intentionally altered, it is possible to re-record or erase the recorded track. Therefore, as a video software supplier, in order to guarantee the quality of the recorded content on the provided magnetic disks, a set of magnetic disks with images recorded on them must be used even if there are unrecorded parts. It is not desirable to be allowed to record without permission.

Therefore, in order to prevent re-recording on the recorded magnetic disk or destruction of recorded information, a write-inhibiting claw is provided on the package, and by breaking this, writing to the disk is prohibited. However, even after a nail is broken, it is possible to record again by applying tape to the corresponding part of the nail.

``-'' The present invention aims to eliminate these drawbacks of the prior art and provide a magnetic disk package that can prohibit recording on a magnetic disk in situations that can be normally assumed in devices that can use magnetic disks. purpose.

According to the present invention, a magnetic disk package having a storage means for rotatably accommodating a magnetic disk therein is capable of fixedly adding the number of recorded data to a recording device into which the package is loaded. It has display means for displaying at the position.

Next, embodiments of the magnetic disk package according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, an embodiment of a magnetic disk package according to the present invention includes a package 22 that rotatably accommodates a thin, small diameter magnetic disk 10;
and a lower body 24, and basically these
A linkage 20 is configured.

The upper body 22 and lower body 24 are formed, for example, by plastic molding and have complementary shapes that fit together to form the pancage 20.

Circular openings 2B and 28 are provided at corresponding positions approximately in the center of the upper body 22 and the lower body 24, respectively, so that the hub or core 12 at the center of the magnetic disk 10 can be exposed through these openings. pan cage 2
0 is attached to an electronic camera, an image recording device such as a video software supplier's recorder, or a user's video playback device, the drive shafts of those devices chuck the core 12, and the magnetic disk 10 can be rotated within the package 20.

The package 20 includes a shaft movable in a direction parallel to one side of the package 20 as shown by an arrow 29.

A groove 30 is provided which slidably engages shallow recesses 32 and 34 in upper body 22 and lower body 24, respectively. When this shaft 30 is moved to a position opposite to that shown in the figure, the openings of the upper body 22 and lower body 24 are exposed, and the regulating plate and magnetic hand of the apparatus are moved to the magnetic disk lO.
It can be brought into contact with the

As can be clearly seen from FIG. 2, the lower baggage body 24 includes:
A claw 70 for inhibiting recording is formed at a predetermined position. This claw 70 has the function of prohibiting the image recording device from recording on the magnetic disk IO by breaking and removing it.

In this embodiment, circular openings 36 and 38 are opened at corresponding positions in the upper body 22 and the lower body 24, respectively, and the annular member 40 is fitted into these openings. The positions of the openings O38 and 38 correspond to the positions of the recorded number display counter of a normal recordable magnetic disk package.

As can be clearly seen from FIG. 3, the annular member 4o has a flat, thin disk shape as a whole, and has a circular opening 8o in the center in the direction of the axis 68. Its upper end 44 and lower end surface (not shown) are partially annular and slightly protrude in the axial direction to form the package 1 integral 22 and the lower body 22, respectively.
is configured to engage and thereby be supported by apertures 38 and 38 of. It is advantageous if the member 40 is formed in a conspicuous color, such as red, because it can clearly indicate that this package 20 is prohibited from recording on the magnetic disk 1o, as will be explained later. It is.

In this embodiment, the annular member 40 may be a number display member of a record number display counter used in a normal magnetic disk package. Therefore, in a part of the cylindrical circumferential surface of the annular member 40, 300 notches are cut in a number corresponding to the number of recordings as shown in the figure. In this embodiment, since the recording capacity of the magnetic disk 10 is 50 fields and 25 frames, the notch 300 has a development angle of 300' at its periphery.
It has expanded over the years. Correspondingly, a display or scale 306 is formed on a part of the outer surface 304 of the package state 22 to indicate the number of records recorded, but this scale does not necessarily indicate the actual number of records recorded. Therefore, it is advantageous not to provide it.

A key groove 66 is formed around the periphery of the cylindrical opening 60. This structure is almost the same as that of a conventional magnetic disk package display counter, but differs from this in that the member 40 is non-rotatably supported by the pancage integral 22 and lower body 24 by a fixed locking member 302. different. In this embodiment, the locking member 302 is the package lower body 2.
It is fixed to a part of the inner surface 308 of 4. Of course, this may also be integrally molded into the lower body 24 or the integral part 22.

As shown in the figure, when the baggage 20 is loaded into a general image recording apparatus, the recorded number display counter drive spindle 100 rotates, and the tip end +02 of the member 40 is inserted into the opening 60 to open the key. 106 is configured to have a shape that can be fitted into the keyway 86.

In this embodiment, the annular member 40 is arranged so that the keyway 66 is at an angular position that indicates the counted value corresponding to the additional recording disabled position of the recorded number display counter, that is, 25 frames (50 fields) in this example. , the long member 3θ2 is firmly fitted into the notch 300 corresponding to this position, and the keyway θ6 is fixed at the display position of the count value.

Therefore, the keyway 66 fixedly displays the position of the 25th frame, which means that this magnetic disk 10 is prohibited from recording.

This embodiment has a simple structure because the number of components of the recorded number display counter including the ratchet mechanism is two times smaller than that of a normal magnetic disk package.

Another embodiment shown in FIG. 4 uses an annular member 40a having a single notch 310 formed in its periphery in place of the annular member 40 in the embodiment of FIG. This embodiment differs from the embodiment shown in FIG. 3 in that only a display 306a indicating a full count value "25" is formed on the outer surface 304 instead of the recorded number display 306. This display 3
06a does not have to be a number indicating a full count, but may be a display such as "FULL" or a simple symbol such as a red circle, or may not be provided as described above.

The relative angular position of the notch 310 with respect to the keyway 66 is fixed such that the keyway 86 indicates an additional recording disabled position, for example, a full-calance i value of "25" with respect to the position of the locking member 302. Therefore, in this embodiment, since the position of the key groove 66 is always uniquely determined at a predetermined position during package assembly, the number of manufacturing steps can be reduced.

Another embodiment shown in FIGS. 5 and 6 is a circular aperture 60
and the keyway 8B is the package upper body 22 and lower body 24.
formed directly on the Of course, the keyway 6B is oriented at a position where additional recording is not possible, for example, at an angular position indicating a full count value, but in this embodiment, no display is provided to indicate the position where additional recording is not possible. Compared to the embodiments described above, this embodiment does not require the annular member 40 or the locking member 302, and can be integrally molded with the package upper body 22 and lower package body 24, so that the structure is simpler.

The operation of the recording device when the magnetic disk package 20 in these embodiments is loaded into a general recording device such as an electronic still camera or an image recorder having a playback device is shown in FIGS. 7 and 8. The functions of these packages 20 will be explained with reference to the flow.

The video software supplier can record images on the magnetic disk IO housed in the package 20 using a dedicated image recording device and without using a counter to display the number of recorded images. Of course, it is preferable to remove the recording inhibit claw 70 after recording has been completed.

In all commonly available image recording apparatuses, when a normal magnetic disk package is loaded, the operation flow is shown in FIG. 7 or 8. This flow is probably a common one based on the design concept of image recording devices available to general consumers.

When a magnetic disk package is loaded into the apparatus, the presence or absence of the write inhibit claw 70 is first detected. If that pawl 70 is present, or equivalent, then the flow of FIG. 7 begins.

The counter spindle 100 is first returned to its original position (home position) (200). In some cases, the original position is the IIO track of the magnetic disk, and in other cases, it is in a position further before the 110th track.

When a normal magnetic disk package is loaded, by rotating the spindle 100 (202), the key 108 engages with the keyway of the recorded number display counter, and its rotational load increases (204). The threshold value for detecting this load increase is preferably set to a value that does not exceed the torque (for example, minimum 6 g) required for the click step of the recorded number display counter. This will read the displayed value of the counter (
20fl), and if it is full (eg 50), no further recording is done (208). If it is not full, it is possible to record to an unrecorded track.
(212).

When a package 20 containing a magnetic disk 10 is loaded into such a recording device, the following operation is performed, and even if tape or the like is attached to the portion of the package 20 corresponding to the claw, the magnetic disk 10 will not be touched. Recording will definitely be prohibited.

As the spindle 100 is rotated (202), the key 106 eventually engages the keyway 66. Since the annular member 40 is non-rotatably fixed, this engagement significantly increases the rotational load (204). Therefore, the recording device
The count value of the counter at that time is read and it is detected that it is full (20B). The recording device can thereby detect that the magnetic disk housed in the package 20 is write-prohibited, and can take measures to prohibit recording (212).

FIG. 8 shows a flowchart of a method for detecting the number of recorded data based on the position where the counter spindle 100 of the magnetic recording device engages with the recorded number display counter.

When the magnetic disk package is loaded, the counter spindle 100 is returned to its original position (step 3) as in the previous example.
00). In this state, has the spindle 100 engaged with the counter, that is, has the spindle +00 moved to the position where the key of the spindle 100 enters the keyway of the counter?
2) is determined. If this key is not entered, the spindle 100 is advanced by 1 position (304), and further the position of the spindle 100 is set to the full value of the counter (for example, 50).
(30B)
is determined, and if it is less than this value, proceed to step 3 above.
The steps 02 to 30111 are repeated.

Thereafter, when the key of the spindle 100 enters the keyway of the counter (302), it becomes possible to record (312) unless the position is in the full position (310).

On the other hand, when the magnetic disk package according to the present invention is used, the counter is full in step 310, so it is detected that the magnetic disk housed in the package 20 is write-protected. + L, you can take action to prohibit recording.

In the following explanation, the magnetic disk package of the present invention has been described in which the counter is fixed at the full position, but it is not necessarily limited to this, and the counter may be fixed at a position where no additional recording is possible. That's fine.

As described above, the magnetic disk package of the present invention can reliably prohibit recording on a magnetic disk in situations that can normally be assumed in a device capable of using a magnetic disk.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the magnetic disk package according to the present invention, Fig. 2 is a perspective view showing the bottom surface of the embodiment of Fig. 1, and Fig. 3 is a partially enlarged view of the embodiment of Fig. 1. FIG. 4 is a partially enlarged exploded perspective view similar to FIG. 3 showing another embodiment of the present invention, and FIGS. 5 and 6 show another embodiment of the present invention. FIGS. 7 and 8 are perspective views similar to FIGS. 1 and 2, respectively, and FIGS. 7 and 8 are flowcharts showing an example of the operation of the image recording device when the magnetic disk package according to the present invention is loaded into the image recording device. It is a diagram. ° minutes Akira no Kumo] 20,,,Package 22,,,Package L body 24,,,Package lower body 40,,,Annular member eo,,,Circular opening [1B,,,Keyway 302,,,Lock member Patent applicant: Fuji Photo Film Co., Ltd. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 7 Figure 8

Claims (1)

[Scope of Claims] 1. A magnetic disk package having a housing means for rotatably housing a magnetic disk therein, the package has a fixed number of needles for a recording device into which the package is loaded. A magnetic disk package characterized by having a display means for displaying at a position where additional recording is disabled. 2. In the package according to claim 1,
The display means includes an annular member having an opening that engages with a drive shaft for displaying the number of recorded sheets of the recording apparatus, and a fixing means for fixing the annular member so as to indicate a position where additional recording is not possible. magnetic disk package. 3. In the package according to claim 1,
A magnetic disk package characterized in that the display means has an opening that engages with a drive shaft of a counter for displaying the number of recorded data of the recording device, and is formed at a position corresponding to the counter of the storage means.