JP4043591B2 - Optical disc storage case - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This invention relates to storage case of the optical disk, and more particularly relates to a configuration in which the remaining amount display of the recording capacity of the optical disk to be accommodated.
[0002]
[Prior art]
In recent years, an optical disk has been used as a data recording medium used in an information processing apparatus such as a personal computer.
[0003]
One type of optical disk is a writable optical disk having a format that can be written once to pre-recorded data.
The writable optical disc that can be additionally written is configured such that when one of the already recorded data is updated, the already recorded data cannot be read, and new data can be recorded.
[0004]
By the way, when a write-once type optical disc is to be additionally recorded, preparing a new optical disc can be useless.
Therefore, it is desirable to be able to determine the recording capacity of an existing optical disk in order to reduce waste of cost.
For this reason, conventionally, a battery, a writable ROM, a display unit, and a display control unit are incorporated in the cartridge together with the optical disc, and the optical disc is mounted on the optical disc recording / reading device, and writing is performed from the ROM terminal connected to the device. An optical disc has been proposed in which the remaining amount of data that can be recorded on an optical disc is written in a possible ROM and the remaining amount data is displayed on a display unit by pressing a switch provided on the cartridge (for example, JP-A-9-17154).
[0005]
[Problems to be solved by the invention]
However, in the configuration described in the above publication, it is necessary to equip parts for displaying the remaining amount, which causes an increase in the cost of the optical disc.
[0006]
In addition, since a space for housing these remaining amount display parts is required, the size of the optical disk increases, and along with this, the optical disk recording / playback apparatus on the equipment side that uses the optical disk also becomes large and uses the optical disk. There is a risk that the equipment will be large. Further, since the remaining amount of the optical disk can be displayed only after the remaining amount data from the optical disk recording / reproducing apparatus is input, the optical disk itself can be displayed in a place where such data cannot be input, for example, in a stored place. The remaining amount cannot be determined for.
[0007]
The object of the present invention is to solve the above-mentioned problems with the conventional optical disc, without causing a change in size, without causing an increase in cost, and without requiring an operation for taking in remaining amount data from other devices. An object of the present invention is to provide an optical disc having a configuration capable of easily determining the remaining amount.
[0008]
[Means for Solving the Problems]
The invention described in claim 1 is an optical disk storage case for storing a writable optical disk, wherein the side facing the recording surface of the optical disk is formed transparent, and is configured to open and close by combining a pair of lid members. In a storage case having a main body and a transparent disc holder that is loaded inside the case main body and supports the optical disc through a center hole thereof, a side facing the recording surface of the case main body, and the disc holder a transparent sheet material to be loaded between, the sheet material is a substantially the same shape and the case body inner surface, the contour of the outer shape and the central hole of the optical disk is being displayed, the remaining recording capacity of the optical disc It is characterized in that a display unit capable of discriminating the amount is provided.
[0009]
According to a second aspect of the present invention, in the optical disk storage case according to the first aspect, the remaining capacity of the recording capacity is indicated by the distance from the center when the recording linear velocity in the data recording layer is constant. The relationship between the scale Y1 shown and the capacity X1 of the optical disk is
Y1 = A1 + B1 · √ (X1)
A1, B 1 : Constant
It is characterized by being set as .
[0010]
According to a third aspect of the present invention, in the optical disk storage case according to the first aspect, the remaining capacity of the recording capacity is indicated by a scale Y2 indicating a distance from the center when the rotational speed of the optical disk is constant. The relationship with the capacity X2 of the optical disk
Y2 = A2 + B2 · X1
However, A2, B2: Constant
It is characterized by being set as .
[0017]
【Example】
The details of the present invention will be described below with reference to the illustrated embodiments.
[0018]
FIG. 1 is a reference example of an optical disc for explaining the principle for determining the remaining storage capacity of the optical disc . In FIG. 1, a known acrylic resin disc is used for the optical disc 1. The data recording layer 1A, which is one side, is provided with a display unit 2 for determining the remaining recording capacity on the surface.
As shown in FIG. 2, the display unit 2 includes a scale portion (indicated by reference numeral 2 </ b> A for the sake of convenience) in which numerals are written on a line extending along the radial direction of the optical disc 1.
[0019]
The scale part 2A is marked based on the following conditions.
First, when the recording linear velocity of the optical disc 1 is constant (Cnstant Linear Velocity), if the distance from the disc center is Y, the disc capacity is X, and the constants are A1 and B1,
Y1 = A1 + B1 · √ (X1) is obtained.
[0020]
Secondly, when the rotational speed of the optical disk 1 is constant (Constant Angular Velocity), the setting Y2 = A2 + B2 · X2 is obtained.
After such a relationship is set and the printing interval of the scale portion 2A is determined, as shown in FIGS. 3 and 4, a scale portion 2A is formed with a number for displaying a necessary remaining amount. . By setting the printing interval of the scale portion 2A, the remaining capacity of the recording capacity can be discriminated in accordance with the recording areas recorded at the same recording density on the inner peripheral side and the outer peripheral side of the optical disc 1.
[0021]
As the printing material for the scale portion 2A, a material that transmits light of a specific wavelength is used. When the optical disc 1 is a write-once type writable type, the light in the vicinity of the wavelength 780 nm of the recording light for data reproduction is A material that transmits but does not transmit light of other wavelengths is used. Thereby, since the visible light wavelength of human beings is 360 nm to 760 nm, the printing can be visually observed. The printing material in this case is preferably a red colorant.
[0022]
In the configuration of the reference example as described above, as shown in FIG. 1, in the case of the optical disc 1 in which a recorded area (for convenience, indicated by reference numeral 1A1) and an unrecorded area (for convenience, indicated by reference numeral 1B1) are mixed. First, by visually observing the scale part 2A of the display unit 2 on the surface of the optical disc 1, the position of the unrecorded area 1B and the corresponding position of the scale part 2A are determined, and the scale part 2A is printed at the boundary position between the two areas. By confirming the contents, the remaining capacity of the recording capacity of the optical disc 1 can be determined. In this case, the recording area 1A1 is different from the case where the reflection state of the light by the internal dye layer and the reflection layer and also the protective layer (polycarbonate) on the surface is not irradiated with the laser beam. It is possible to distinguish it from the unrecorded area 1B.
[0023]
Next, a description will be given of an embodiment of the present invention using the above-described recording capacity remaining amount determination principle.
Optical disc 1 is often stored are accommodated in a case for protection. Therefore, the remaining capacity of the recording capacity in the accommodated state can be determined.
Figure 5 illustrates the housing case of an optical disc according to the present invention.
In FIG. 5, the housing case 3 of the optical disc 1 is configured to be able to be opened and closed by combining a pair of lid members, and has a boss 3A1 corresponding to a center position support portion that can be inserted through the center hole 1C of the optical disc 1 loaded therein. And a disc jacket 3B serving as a protective sheet loaded between the disc holder 3A and the inner surface of the case body 3 ′ facing the recording surface of the optical disc 1. In addition, a protective sheet (not shown) such as paper is loaded inside the housing case 3 between the surface opposite to the recording surface of the optical disc 1 and the inner surface of the housing case 3.
[0024]
A part of the disk holder 3A and the disk jacket 3B is transparent, or, as indicated by reference numeral 3B1 'in FIG. 8, a notch having a longitudinal direction in the radial direction of the optical disk 1 is provided. 'Also formed transparent.
[0025]
As shown in FIG. 6, the case main body surface 3 ′ is provided with a display unit 7 for determining the remaining recording capacity of the optical disc 1.
The display portion 7 is formed with a scale portion (not shown) with the same setting as the reference example for explaining the principle for discrimination shown in FIG. 3 or FIG. The scale is marked with a desired color by silk printing or the like. The scale portion is not limited to color display, and may be formed on the surface of the case main body 3 ′ by engraving or convex portions.
[0026]
Since the present embodiment is configured as described above, the optical disk 1 is mounted on the disk holder 3A in the storage case 3, and the disk holder 3A is mounted in the storage case 3.
When the disc holder 3A is mounted in the storage case 3, a part or the whole of the optical disc 1 can be seen through from the case body 3 'side of the storage case 3 as shown in FIG. In addition, the boundary position between the recorded area 1A and the unrecorded area 1B of the optical disc 1 can be determined via the display unit 7 provided in the case body 3 ′.
[0027]
Note that the display unit 7 is not limited to being provided in the case main body 3 ′, and as shown in FIG. 8, when a notch 3B1 ′ is formed in a disc jacket (indicated by reference numeral 3B ′ for convenience). Alternatively, a notch 3B1 ′ may be used, and a display unit (indicated by reference numeral 7 ′ for convenience) may be provided along the longitudinal direction of the notch 3B1 ′. In this case, as in the case shown in FIG. 5, the case main body surface 3 ′ is transparent, and the portion of the disc holder 3A corresponding to the notch 3B1 ′ of the disc jacket 3B ′ can be seen through. Has been.
In such a configuration, as shown in FIG. 9, the boundary position between the recorded area 1A and the unrecorded area 1B of the optical disc 1 is indicated on the scale portion of the display portion 7 ′ via the notch 3B1 ′ of the disc jacket 3B ′. Accordingly, the remaining capacity of the recording capacity of the optical disc 1 can be determined by seeing through the disc jacket 3B ′ from the case main body surface 3 ′ of the housing case 3.
[0028]
As a configuration for determining the remaining recording capacity of the optical disc 1, the configuration shown in FIGS. 10 and 11 may be used.
In FIG. 10, reference numeral 30 denotes a transparent sheet material that has substantially the same shape as the inner surface of the housing case 3 and is loaded into the recording surface of the optical disc 1 and the case main body 3 ′ of the housing case 3 (see FIG. 5). On the surface of the sheet material 30, there are provided a contour line 30A indicating the outer shape of the optical disc 1 and a contour line 30B indicating the shape of the center hole 1C of the optical disc 1.
A display unit 31 is formed in the vicinity of the contour line 30B along the radial direction of the optical disc 1, and the display unit 31 has a scale unit 32 with the same settings as those shown in FIG. 3 or FIG. Is formed. In this case, the case main body surface 3 ′ and the desk jacket 3B (see FIG. 5) of the housing case 3 (see FIG. 5) are transparent so that the sheet material 30 can be seen through.
[0029]
In the above configuration, when the disc jacket 3A on which the optical disc 1 is mounted is accommodated in the accommodating case 3, the sheet material 30 is disposed in the recording surface of the optical disc 1 and the case main body 3 ′ in the accommodating case 3. In this case, the sheet material 30 is positioned in advance inside the case main body 3 ′ of the housing case 3, and since the shape is substantially the same, the sheet material 30 is not inadvertently displaced in the case main body surface 3 ′.
[0030]
When the housing case 3 is closed, the optical disc 1 can be seen through from the outside through the case body 3 ′ and the sheet material 30. Since the sheet material 30 is positioned within the case main body surface ′ of the housing case 3, the contour lines 30 </ b> A and 30 </ b> B can be matched with the corresponding portions of the optical disk 1. For this reason, in the optical disc 1, the remaining capacity of the recording capacity is confirmed by associating the boundary position between the recorded area and the unrecorded area with the scale part 32 of the display unit 31 provided on the sheet material 30. It will be.
[0031]
The sheet material 30 is not limited to the same shape as the case main body 3 ', and as shown in FIG. 11, the sheet material 30 is inserted into the boss portion 3A1 that is the center position supporting portion of the disc holder 3A together with the center hole 1C of the optical disc 1. It is also possible to adopt a configuration in which possible holes (indicated by reference numeral 30B ′ for convenience) are formed and formed in the same disk shape as the optical disc 1 (hereinafter, this sheet material is indicated by reference numeral 30 ′).
A display portion 31 similar to that shown in FIG. 10 is provided on the surface of the sheet material 30 ′, and a scale portion 32 is formed on the display portion 31. In this case, since the sheet material 30 ′ is a member located on the opposite side of the disc jacket 3 A across the optical disc 1, the recording surface of the optical disc 1 is located on the opposite side of the case body surface 3 ′ of the housing case 3. The disc jacket 3A is mounted in the orientation. For this reason, the surface of the housing case 3 opposite to the case main body surface 3 ′ is transparent so that the recording surface of the optical disk 1 can be seen through.
[0032]
In such a configuration, the sheet material 30 ′ is placed on the recording surface of the optical disc 1 with the recording surface facing away from the disc jacket 3 A in the disc jacket 3 A, and is supported together with the optical disc 1 in the center of the disc jacket 3 A. The center position is aligned with the optical disc 1 by being inserted into the boss portion 3A1 that is a portion.
The optical disc 1 is seen through from the outside through the sheet material 30 ′ and the surface of the housing case 3 opposite to the case main body surface 3 ′, and the optical disk 1 has a display portion 31 formed on the sheet member 30 ′. The remaining capacity of the recording capacity is determined by visually checking the correspondence between the recorded position 1A and the unrecorded area 1B on the optical disc 1 with respect to the scale 32.
[0033]
In place of the sheet members 30 and 30 ', as shown in FIG. 12, the optical disk 1 has a longitudinal direction in the radial direction, and the boss 3A1 in the housing case 3 is inserted together with the center hole 1C of the optical disk 1. Display using a display piece 40 composed of a rectangular piece in which possible holes 40A are formed, and a scale portion 42 formed on the surface of the display piece 40 with the same setting as shown in FIG. 3 or FIG. A configuration in which the portion 41 is provided is also possible.
[0034]
【The invention's effect】
According to the first aspect of the present invention, the scale portion for checking the remaining capacity of the recording capacity in a state where the shape or the center position of the optical disc is aligned is provided, so that the remaining amount of the optical disk can be seen through the scale portion. This makes it possible to check the remaining amount of the optical disk without using an optical disk recording / reproducing apparatus .
[0035]
According to the second aspect of the present invention, when the recording linear velocity of the optical disc is constant, the remaining capacity of the recording capacity matched to the recording format can be determined. It becomes possible to confirm .
[0036]
According to the third aspect of the invention, when the number of rotations of the optical disk is constant, the remaining amount of the recording capacity matched to the recording format can be confirmed, so that the actual remaining amount can be confirmed accurately. .
[Brief description of the drawings]
FIG. 1 is a perspective view for explaining a configuration of an optical disc according to an embodiment of the present invention.
2 is a plan view of the optical disc shown in FIG. 1. FIG.
FIG. 3 is a diagram for explaining an example of a scale portion provided on the optical disc shown in FIG. 1;
4 is a diagram for explaining another example of a scale portion provided on the optical disc shown in FIG. 1; FIG.
5 is a perspective view for explaining a configuration of a case for housing the optical disc shown in FIG. 1. FIG.
6 is a perspective view showing a state in which the case shown in FIG. 5 is closed. FIG.
7 is a plan view of the state shown in FIG. 6. FIG.
8 is a perspective view of members constituting a display unit used when housing the optical disc shown in FIG. 1 in a case.
9 is a plan view of a case using the member shown in FIG. 9. FIG.
10 is a perspective view showing another example of a member constituting a display unit used when housing the optical disc shown in FIG. 1 in a case.
11 is a perspective view showing another example of members constituting the display unit shown in FIG.
12 is a perspective view showing still another example of the member shown in FIG. 11. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Optical disk 1A Recorded area 1B Unrecorded area 2, 7 Display part 2A, 32, 42 Scale part 3 Accommodating case 3 'Case main body surface 3A Disk holder 3A1 Boss part 3B, 3B' Disc jacket 3C center Holes 30, 30 ', 40 Sheet member 30A Optical disc contour 30B Optical disc center hole contour 30B' Holes 31, 41 into which the bosses of the disc jacket can be inserted Display portions 32, 42 Scale portion

Claims (3)

An optical disk storage case for storing a writable optical disk,
A case body configured to open and close in combination with a pair of lid members, the side facing the recording surface of the optical disc is formed transparently,
In a storage case having a transparent disc holder that is loaded inside the case body and supports the optical disc through the center hole thereof,
A transparent sheet material loaded between the side of the case body facing the recording surface and the disk holder;
The sheet material is a substantially the same shape and the case body inner surface, the contour of the outer shape and the central hole of the optical disk is being displayed, characterized in that the remaining amount of the recording capacity of the optical disc provided with a display unit capable of discriminating An optical disk storage case. In the optical disk storage case according to claim 1 ,
When the recording linear velocity in the data recording layer is constant, the recording capacity remaining amount display shows the relationship between the scale Y1 indicating the distance from the center and the capacity X1 of the optical disk.
Y1 = A1 + B1 · √ (X1)
A1, B 1 : Constant
An optical disk storage case characterized by being set as follows . In the optical disk storage case according to claim 1,
The recording capacity remaining amount display indicates that the relationship between the scale Y2 indicating the distance from the center and the capacity X2 of the optical disk when the rotational speed of the optical disk is constant.
Y2 = A2 + B2 · X1
However, A2, B2: Constant
An optical disk storage case characterized by being set as follows .

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