JPS6326883A - Information storing medium and its manufacture - Google Patents

Abstract

PURPOSE:To make operation of an operator simple by displaying information that correlates the body of an information storing medium and a cassette in a display section provided in the cassette and storing it in an information storing layer of the body of the information storing medium. CONSTITUTION:To manufacture an information storing medium, an optical disk 13 is inserted into a disk cartridge 12 manufactured separately and a bar code 15 that indicates information of manufacture corresponding to the inserted optical disk 13 is stuck on the side of the cartridge 12. Manufacture's serial number and date of manufacture of the optical disk 13 are read optically from the bar code 15, and read data are stored optically in the information storing layer of the disk 13. Thereby, troubles such as key inputting the number and data of manufacture etc. can be reduced, and accordingly, storing process can be simplified, and efficiency of operation of an operator can be heightened. Further, a computer that generates stored data corresponding to the number and date of manufacture by key inputting becomes unnecessary, and whole manufacturing unit can be made small.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an information storage medium such as an optical disk capable of storing, reproducing, or erasing information, and a method of manufacturing the same.

(Prior Art) In recent years, information storage devices that use optical disks to store information have been
Compared to conventional magnetic information storage devices,
It is possible to greatly increase the number of information holders, and it is possible to obtain a good and stable information reproduction state with little noise, and it is not easily affected by external influences, the storage state is extremely stable, and it is also non-contact state. They are becoming more and more widely used because they have the characteristics of being able to perform information processing without causing any adverse effects such as damage to optical discs and information processing heads.

In addition, with this increased use, there has recently been a strong desire for this type of information storage device to improve operability and protect the optical disk.

Therefore, an information storage medium that enables information processing on an optical disc by storing the optical disc (information storage medium main body) in a disc cartridge (cassette) and inserting the entire disc cartridge into the device without touching the optical disc directly. is being developed.

For this type of information storage medium, in order to clarify the quality and warranty period of the optical disc during product management, shipping destination management, maintenance, etc., the serial number of the optical disc is used at the time of manufacturing the optical disc. It is designed to store information such as the date of manufacture and date of manufacture.

However, information such as the serial number and date of manufacture was stored only on the optical disc, and no information was displayed on the disc cartridge.

For this reason, when storing serial numbers, manufacturing dates, etc. on optical discs, the manufacturing equipment and computer are connected online, and the stored data is stored according to information such as the serial number and manufacturing date entered by the operator. is generated by a computer, and is stored in a predetermined area of the information storage layer of the optical disc by a manufacturing device connected online.

Therefore, when storing information on an optical disk, the equipment required for the storage process is large-scale, and the operator's operations related to this storage process are ff! It was getting messy.

(Problems to be Solved by the Invention) The first object of the present invention is to eliminate the drawback that cassettes do not have any display, and display a display that displays information that associates the information storage medium body with the cassette. The present invention aims to provide an information storage medium in which the main body of the information storage medium and the cassette that accommodates the main body of the medium can correspond to each other.

A second object of the present invention is to simplify the storage process by eliminating the disadvantages that the equipment required for storage processing is large-scale and the operator's operations related to this processing are complicated. It is an object of the present invention to provide a method for manufacturing an information storage medium that can improve operability for an operator.

[Structure 1 of the invention (Means and effects for solving the problem) The information storage medium of the present invention comprises an information storage medium main body having an information storage layer capable of storing, reproducing or erasing information, and this information storage medium. In an information storage medium having a cassette for storing a main body, information associating the information storage medium main body with the cassette is displayed on a display section provided on the cassette, and an information storage layer of the information storage medium main body is displayed. is what is stored in the .

The method for manufacturing an information storage medium of the present invention manufactures an information storage medium having an information storage medium body having an information storage layer capable of storing, reproducing, or erasing information, and a cassette that houses the information storage medium body. In the method of It is stored separately in the information storage layer of the main body.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows the external appearance of a disk cartridge (cassette) 12. As shown in FIG. This disk cartridge 12 is
An optical disk 13 serving as an information storage medium body having an information storage layer in which grooves (tracks) are formed in a spiral shape is housed inside.

As shown in FIG. 2, this optical disc 13 has a circular substrate made of glass or plastic, covered with a metal such as tellurium or bismuth.
The layer is coated in a donut shape, and a notch, that is, a reference position mark 11, is provided near the center of the metal coating layer. Also, on the optical disk 13, the reference position mark 11 is set to "0" and 25
It is divided into 6 sectors.

On the optical disk 13, fixed length information is stored over a plurality of blocks, and 300,000 blocks of information are stored on 36,000 tracks on the optical disk 13.

The starting position of each block above is the block number.

As a block header A consisting of a track number and the like, data modulated by the 2-7 code conversion method during the manufacture of the optical disc 13, for example, is stored.

Further, the optical disc 13 has a no-storage track area 1a and a user-inaccessible area 1b from the innermost track.
, and a user-accessible area 1c.

The non-memory track area 1a is, for example, the innermost track area 1a.
It consists of 0 tracks and is provided as a margin area for detection and eccentricity correction of the innermost track.

The user-inaccessible area 1b is made up of blocks corresponding to an access error, for example, 200 blocks (hex), because an optical head (described later) is accessed during access. The block in this user-inaccessible area 1b contains the block header A.
, and information associating the disc cartridge 12 and the optical disc 13 (details will be described later) are stored.

The user accessible area 1C includes a defective block management information storage area 1d and a data block storage area 1e.
It is made up of.

The defective block management information storage area 1d stores defective block management information consisting of a defective block start address and the number of consecutive defective blocks.

In the optical disc 13, a shutter 14 provided on the disc cartridge 12 slides to open and close a window, so that a part of the information storage layer is exposed in accordance with the opening and closing of the window. . Note that the optical disc 13 has two sides (A side/B side) or one side (A side).
It is a read-only type that allows the stored information to be played back, a write-once type that allows additional information to be stored, or a rewritable type that allows the stored information to be erased. .

On the other hand, on one side of the disk cartridge 12,
As information for associating the optical disc 13 and the disc cartridge 12, a bar code (display part) 15 indicating manufacturing information consisting of, for example, the serial number and manufacturing date of the optical disc 13 is attached.

FIG. 3 shows that the optical disc 13 is
This figure shows a manufacturing device 21 that stores manufacturing information and the like. That is, a disk cartridge insertion slot (not shown) is formed on the front surface of the main body 21 of the apparatus. Also, inside the device main body 21, there is a disk rotation motor (
(not shown), an optical head 26 that performs storage processing on the information storage layer on the lower surface side of the optical disc 13 by moving in the radial direction of the optical disc 13 by a linear motor (not shown); A detection unit 2 that optically reads the barcode 15
It also includes J5 and a control section 30 that drives them.

That is, in response to the insertion of the disc cartridge 12, the manufacturing apparatus 21 optically reads the barcode 15 affixed to the disc cartridge 12 by the detection unit 29 based on a change in reflectance, and uses the read barcode 15 to read the barcode 15 attached to the disc cartridge 12. The displayed manufacturing information such as the manufacturing number and manufacturing date is optically stored in the information storage layer of the optical disc 13 by the optical head 26.

Next, a method for manufacturing the information storage medium will be explained. First, when manufacturing an optical disc, for example, an optical disc 13 is inserted into a separately manufactured disc cartridge 12, and a bar code 15 on one side of the disc cartridge 12 displays manufacturing information corresponding to the inserted optical disc 13. Attach. This disk cartridge 12 is then set in the manufacturing apparatus 21 through a disk cartridge insertion slot (not shown).

Then, the control section 30 uses a mechanism (not shown) to slide the shutter 14 of the disk cartridge 12 to open the window to expose a portion of the internal optical disk 13, and also drives a disk rotating motor (not shown). The optical disc 13 is rotated.

Also, at this time, the optical head 26 is accessed to a predetermined area by a coloring near motor (not shown), and preformatting on the optical disc 13 is started. Next, the control unit 30 inspects each area by reproducing the data stored by preformatting with the optical head 26, and the defective block management information storage area 1.
Defective blocks are managed by d.

Thereafter, the control section 30 drives the detection section 29 to optically read the barcode 15 from the disk cartridge 12, and causes the optical head 26 to access a predetermined area by a coloring near motor (not shown).

In this state, the control section 30 supplies the manufacturing information read from the barcode 15 by the detection section 29 to the optical head 26 . Thereby, the optical head 26 optically stores the manufacturing information in a predetermined area of the corresponding information storage layer, i.e., a block within the user-inaccessible area 1b. As a result, the serial number and manufacturing date displayed by the barcode 15 affixed to the disc cartridge 12 are stored as bit information in the user-inaccessible area 1b of the optical disc 13.

Then, when this storage process is completed, the control unit 30
A mechanism (not shown) slides the shutter 14 to close the window, and at the same time, the disk cartridge 12 is ejected from the disk cartridge insertion slot. Note that the manufacturing information may be stored before preformatting.

As mentioned above, a bar code indicating the serial number and manufacturing date of the optical disc is affixed to the disc cartridge in which the optical disc is stored, and when the optical disc is manufactured,
The serial number and manufacturing date of the optical disc are optically read from this barcode, and the read serial number and manufacturing date are optically stored in the information storage layer of the optical disc.

As a result, it is possible to reduce the effort of manually inputting the serial number and date of manufacture, thereby simplifying the storage process and improving operability for the operator. Also,
Since there is no need for a computer to manually generate storage data according to the serial number and date of manufacture, the entire manufacturing apparatus can be downsized.

In general, it is possible to reduce the time required for key human labor, and it is also possible to prevent discrepancies in the serial number or manufacturing date between the disc cartridge and the optical disc that occur due to incorrect input by the operator. This improves performance and reliability, and also ensures a one-to-one correspondence between the disk cartridge and the optical disk. This makes it easier to manage products, shipping destinations, etc. using disk cartridges.

Further, information is stored as bit information in a user-inaccessible area of the optical disc.

This prevents the user from rewriting or erasing the date of manufacture, for example.

Therefore, by replacing the disc cartridge with the optical disc, it is possible to prevent the quality, warranty period, etc. of the optical disc from becoming unclear during maintenance or the like.

In the above embodiment, the storage process of manufacturing information such as the serial number and date of manufacture is performed together with the preformatting process of the optical disc, etc., depending on the manufacturing equipment. Alternatively, only the storage process of manufacturing information may be performed using a dedicated device.

In this case, manufacturing information including a serial number, manufacturing date, etc. has been described as an example of information for associating an optical disc and a disc cartridge, but the present invention is not limited to this. Further, in addition to the manufacturing information, for example, characteristics of the optical disc such as reflectance, threshold value of laser power, polarity of reproduction signal, etc. may be added, and these may be read and stored in the optical disc.

Generally speaking, a bar code as a display part is provided on one side of the disk cartridge, but the bar code is not limited to this, for example, it can be placed on the front side of the disk cartridge as shown in FIG. It may be provided on the surface of the.

Furthermore, as an example of mechanically reading information, a case has been described in which the display unit is displayed with a bar code and information is optically read from the bar code. For example, as shown in FIG. Information can be read magnetically, or as shown in Figure 7, symbols 32 such as optical letters and numbers can be read by normal character reading, or information can be read mechanically from what is displayed by uneven surfaces. It's okay.

Furthermore, as an example of a device that stores information mechanically,
Although we have described optical storage using an optical head on an optical disk as an information storage medium body, for example, there is a method using a magnetic head on a magnetic disk or floppy disk as an information storage medium body, or an information storage medium body. It may also be performed using an optical head and a magnetic field generator for a magneto-optical disk.

[Effects of the Invention] As detailed above, according to the present invention, as a first effect, it is possible to provide an information storage medium in which the information storage medium body and the cassette that accommodates this medium body can be matched.

As a second effect, it is possible to provide a method for manufacturing an information storage medium that can simplify storage processing and improve operability for operators.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view schematically showing the structure of a disk cartridge, FIG. 2 is a plan view showing the structure of an optical disk, and FIG. 3 is a schematic diagram of the manufacturing apparatus. The configuration diagram, FIGS. 4 and 5 are perspective views showing modified examples of the mounting position of the display section, and FIGS. 6 and 7 are plan views showing modified examples of the display section, respectively. 12... Disk cartridge (cassette), 13...
. . . Optical disk (information storage medium main body), 15 . . . Barcode (display section), 21 . . . Manufacturing device, 26 . Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 2 Figure 3 Figure 4 Figure 1 FN5

Claims (6)

[Claims] (1) In an information storage medium having an information storage medium body having an information storage layer capable of storing, reproducing, or erasing information, and a cassette that houses the information storage medium body, the information storage medium body and the cassette An information storage medium characterized in that information associating the above is displayed on a display section provided on the cassette and is stored in an information storage layer of the information storage medium main body. (2) The information storage medium according to claim 1, wherein the information storage medium body is an optical disc. (3) The information storage medium according to claim 1, wherein the information that associates the information storage medium body with the cassette indicates the serial number and manufacturing date of the information storage medium body. . (4) The information storage medium according to claim 1, wherein the display section displays information associating the information storage medium main body and the cassette with a bar code. (5) The information storage medium according to claim 1, wherein the display section displays information associating the information storage medium body and the cassette on a magnetic tape. (6) In a method for manufacturing an information storage medium having an information storage medium body having an information storage layer capable of storing, reproducing, or erasing information, and a cassette for storing the information storage medium body, the information storage medium A display section for displaying information associating the main body and the cassette is provided on the cassette, the information displayed on the display section is mechanically read, and the read information is mechanically transferred to the information storage layer of the information storage medium main body. 1. A method for producing an information storage medium, the method comprising: storing information on an information storage medium;