JPH0620331A - Optical disk and recording and reproducing device - Google Patents

Abstract

PURPOSE:To drastically improve operability by providing a recording area on a conventional read only optical disk. CONSTITUTION:A magnetic information recording area 3A capable of being written and being read by a magnetic head is provided on one surface of the optical disk 2 of which a read only optical information recording area 2A is formed on another surface. Consequently, reference information about the optical information recording area 2A is written in the magnetic information recording area 3A and when recorded information in the optical information recording area 2A is reproduced based on the reference information, the optical disk 1 with drastically improved operability is provided.

Description

Detailed Description of the Invention

[0001]

[Table of Contents] The present invention will be described in the following order. Field of Industrial Application Conventional Technology Problems to be Solved by the Invention Means for Solving the Problems (FIGS. 1 and 2) Action (FIG. 1) Example (FIGS. 1 and 2) Effect of the Invention

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc and a recording / reproducing device, and is particularly suitable for application to a read-only optical disc in which information cannot be written and a recording / reproducing device thereof.

[0003]

2. Description of the Related Art Conventionally, there are CD and CD-ROM as read-only optical disks. CD and CD-R here
Optical discs such as OM are large-capacity recording media capable of recording a large amount of information, and can be easily duplicated and provided at a low price. Therefore, they are widely used in various fields such as entertainment, education and information. ing. The CD-ROM is used, for example, in the information field to read the dictionary information recorded on the optical disk by a dedicated reproducing device as needed by the user, and in the entertainment field, the CD-ROM game machine. Widely used for etc.

[0004]

DISCLOSURE OF THE INVENTION CD-ROM
Since it is composed of a read-only optical disk, the user could not record the reference information on the CD-ROM on the same disk. Therefore, for example, when the user interrupts the reading operation of the CD-ROM in the middle of the operation, the interruption position and the information until the interruption are saved in the save area of the reproducing device side, and when the CD-ROM is used again. Is designed to continue the interrupted processing from the interrupted position of the CD-ROM again based on the save information stored in the reproducing apparatus.

However, such a method of storing the interruption information in the save area on the reproducing apparatus side can deal with the case where the interruption and continuation of one CD-ROM is repeated on the same reproducing apparatus. Using each CD-ROM, interrupting the use of each CD-ROM midway
-When the ROM is continuously used from the interruption position, the save information stored in the save area is sequentially erased, so that there is a problem that such parallel processing cannot be performed.

Further, for example, a CD-recording dictionary information and the like.
In the case of using the ROM, it is necessary to repeat the same procedure to read the information once read again, and it is very troublesome to read the same information many times. Here, there is a magneto-optical disk as an optical disk having a writable recording area on the disk, but in the magneto-optical disk, the magneto-optical disk itself is considerably expensive, and a dedicated recording / reproducing device having a complicated structure is required. There is a problem that becomes. This makes it possible to record the interruption position on each optical disk, for example, when the reading operation of the optical disk is once interrupted, or to record desired reference information of the optical disk according to the user's need. It is considered very convenient if there is a large recording area.

The present invention has been made in consideration of the above points, and it is an object of the present invention to propose an optical disk and a recording / reproducing apparatus for the optical disk, which are remarkably improved by providing a recording area in an optical disk which is conventionally read only. To do.

[0008]

In order to solve such a problem, according to the present invention, an optical information recording area 2A formed on one surface of a disk member 1 and having read-only recording information recorded thereon which can be read by an optical pickup. And a magnetic information recording area 3A formed on the other surface of the disk member 1 for recording magnetic recording information which can be written and read by a magnetic head.

In the present invention, the disk member 1 has the disk-shaped magnetic recording medium 3 attached to the other surface of the optical disk 2 having the optical information recording area 2A on one surface.

Further, in the present invention, reference information for the record information in the optical information recording area 2A is written in the magnetic information recording area 3A, and the optical information recording area 2A is based on the reference information.
The recorded information of is reproduced.

Further, in the present invention, the optical disk 1
And an optical pickup 12 provided at a position facing the optical information recording area 2A of the optical disk 1 for optically reading optical recording information from the optical information recording area 2A and a magnetic information recording area 3A of the optical disk 1. The magnetic head 13 is provided at a position to write predetermined magnetic information in the magnetic information recording area 3A or read predetermined magnetic information from the magnetic information recording area 3A.

[0012]

A magnetic information recording area 3A which is writable and readable by a magnetic head is formed on the other surface of the optical disk 1 on which a read-only optical information recording area 2A which can be read by an optical pickup is formed on one surface. As a result, the reference information for the optical information recording area 2A can be written in the magnetic information recording area 3A, and if the recorded information in the optical information recording area 2A is read based on the reference information, an optical disk with significantly improved usability can be obtained. realizable.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an optical disk as a whole, and the surface opposite to the optical information recording surface 2A of the CD-ROM 2 is used as an adhesive surface 2B to which a magnetic recording medium 3 is attached by a predetermined adhesive. ing. The magnetic recording medium 3 is a CD-ROM
It consists of a disk-shaped magnetic plate with a radius almost equal to 2.
A magnetic information recording surface 3A is formed on the surface opposite to the bonding surface 3B with the CD-ROM 2 so that predetermined information can be recorded and reproduced by a magnetic head.

Thus, one surface of the optical disc 1 serves as a read-only optical information recording surface 2A on which predetermined information is recorded by the optical recording method, and the other surface can record and reproduce desired information by a magnetic head. It is the magnetic information recording surface 3A.

Here, the optical disk 1 is loaded on a recording / reproducing device 10 as shown in FIG. The recording / reproducing apparatus 10 is provided with a spindle motor 11 for rotating and driving the optical disc 1, and an optical pickup 12 and a magnetic head 13 are provided at positions facing the optical information recording surface 2A and the magnetic information recording surface 3A, respectively. Has been.

The optical pickup 12 and the magnetic head 13 are connected by a connecting member 14 having a U-shaped cross section.
When the optical disc 1 is driven in the radiation direction or the vertical direction, the optical pickup 12 and the magnetic head 13 are also moved in the radiation direction or the vertical direction of the optical disc 1 in association with this. The optical pickup 12 is a CD-
The reproduction signal S1 is read from the optical information recording surface 2A of the ROM 2 and is sent to the signal processing unit 17 via the reproduction unit 16 as a reproduction data signal S2. The signal processing unit 17 converts the reproduction data signal S2 into the video signal S3, and then the monitor 18
Then, the information of the CD-ROM 2 is displayed on the monitor 18.

In the case of the embodiment, when the input control signal S4 for interrupting the reading of information from the optical information recording surface 2A is sent to the control section 20 by the operation panel 19 including an input keyboard, the control section 20 performs signal processing. Unit 17 and drive unit 15
The control signals S5 and S6 are transmitted to the signal processing section 17, so that the signal processing section 17 extracts the interruption information signal S7 from the reproduction data signal S2 in the interruption state and sends it to the recording / reproducing section 21. The recording / reproducing section 21 converts the interruption information signal S7 into a recording signal S8 and writes it on the magnetic information recording surface 3A by the magnetic head 13.

At this time, the drive unit 15 stops the movement of the connecting member 14 in the A direction based on the control signal S6, and also moves the connecting member 14 in the B direction to move the magnetic head 13 to the magnetic head 13.
Is brought into contact with the magnetic information recording surface 3A. Thereby, the interruption information such as the interruption position of the optical information recording surface 2A when the reading operation of the optical information recording surface 2A is interrupted is written by the magnetic head 13 at a predetermined position of the magnetic information recording surface 3A. There is.

On the other hand, the operation panel 19 is the control unit 2
When the input control signal S4 for continuously reading the record information from the position where the optical information recording surface 2A is interrupted is sent to 0, the control section 20 sends the control signal S6 to the drive section 15, whereby the drive section 15 receives the magnetic head. 13 by magnetic information recording surface 3A
The interruption information is read out from the predetermined position and is inputted to the recording / reproducing section 21 as the reproduction signal S9.

The recording / reproducing unit 21 converts the reproduction signal S9 into an interruption information signal S10 and sends the interruption information signal S10 to the control unit 20 via the signal processing unit 17. The control unit 20 sends a control signal S6 to the driving unit 15 based on the interruption information signal S10, and the driving unit 15 moves the connecting member 14 in the A direction to the position where the reading of the optical pickup 12 is stopped. After the movement, the connecting member 14 is moved in the B direction so that the magnetic head 13 is separated from the magnetic information recording surface 3A, and the focus of the optical pickup 12 is aligned with the optical information recording surface 2A. As a result, the optical pickup 12 can restart the information read from the optical information recording surface 2A, which has been interrupted, based on the interrupt information recorded on the magnetic information recording surface 3A.

In the above structure, once the reading of information from the optical information recording surface 2A is interrupted, the interrupted information is written on the magnetic information recording surface 3A by the magnetic head 13. Next, the recording / reproducing apparatus 10 reads the interruption information recorded on the magnetic information recording surface 2A by the magnetic head 13 when restarting the reading of the information on the optical information recording surface 2A again from the interrupted position, and the interruption is performed. The information on the optical information recording surface 2A is continuously read by moving the optical pickup 12 to the position where the reading is interrupted based on the information.

According to the above structure, the magnetic information recording surface 3A is formed by adhering the magnetic recording medium 3 to the other surface 2B of the optical information recording surface 2A of the CD-ROM 2, so that, for example, a CD.
If the interruption information of the ROM 2 is recorded on the magnetic recording surface 3A, the information on the optical information recording surface 2A can be read again from the position where the reading is interrupted based on the interruption information, and the usability is remarkably improved. The optical disk 1 can be realized.

Further, by providing the optical pickup 12 and the magnetic head 13 of the same construction as the conventional ones at the positions facing the optical information recording surface 2A and the magnetic information recording surface 3A of the optical disc 1, respectively, a relatively simple construction. To read information from the optical information recording surface 2A and to read the magnetic information recording surface 3A.
It is possible to realize the recording / reproducing device 10 capable of writing and reading information to and from the device.

Although the magnetic head 12 and the optical pickup 13 are connected by the connecting member 14 and driven by the same drive unit 15 in the above-mentioned embodiment, the present invention is not limited to this. The connecting member 14 may be omitted, and the magnetic head 12 and the optical pickup 13 may be independently driven by separate driving units.

In the above embodiment, the CD-RO is used.
The CD-ROM 2 is provided on the surface opposite to the optical information recording surface 2A of M2.
Although the case of adhering the magnetic recording medium 3 having substantially the same radius as the above was described, the magnetic recording medium 3 is the CD-ROM 2
Need not have the same radius as the CD-RO
Instead of adhering the disk-shaped magnetic recording medium 3 to the surface of M2 opposite to the optical information recording surface 2A, a magnetic film which can be recorded on the opposite side of the optical information recording surface 2A of the CD-ROM 2 by a magnetic head. May be formed by a method such as vapor deposition.
The magnetic information recording area may be formed on the surface of the ROM 2 opposite to the optical information recording surface 2A.

Further, in the above-mentioned embodiment, the case of recording the interruption information when the operation of the CD-ROM 2 is interrupted on the magnetic information recording surface 3A has been described, but the information to be recorded on the magnetic information recording surface 3A is Not limited to this, information such as a so-called bookmark of the CD-ROM 2 that causes the optical pickup 12 to start reading information from the information position is repeatedly displayed on the magnetic information recording surface 3A for information on the CD-ROM 2 that is repeatedly read. It may be written, and various reference information regarding the CD-ROM 2 can be written on the magnetic information recording surface 3A.

Further, in the above embodiment, the CD-R
The case where the magnetic information recording surface 3A is formed on the surface opposite to the optical information recording surface 2A of the OM2 has been described, but the present invention is not limited to this, and the magnetic information recording surface 3A is formed on the surface opposite to the optical information recording surface 2A of a CD, for example. The information recording surface 3A may be formed, and it can be applied to various read-only optical disks.

[0029]

As described above, according to the present invention, since the magnetic information recording area is formed on the surface of the read-only optical disk opposite to the optical information recording surface, the optical disk is related to the magnetic information recording area. Reference information can be written, and an optical disk with significantly improved usability can be realized.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an optical disc according to the present invention.

FIG. 2 is a block diagram showing a recording / reproducing apparatus according to the present invention.

[Explanation of symbols]

1 ... Optical disc, 2 ... CD-ROM, 2A ... Optical information recording surface, 3 ... Magnetic recording medium, 3A ... Magnetic information recording surface, 10 ... Recording / reproducing device, 12 ... Optical pickup,
13 ... magnetic head, 14 ... connecting member.

Claims (4)

[Claims] 1. An optical information recording area formed on one surface of a disk member and having read-only recording information recorded thereon which can be read by an optical pickup, and a magnetic head formed on the other surface of the disk member. An optical disk, comprising: a magnetic information recording area in which writable and readable magnetic recording information is recorded. 2. The optical disk according to claim 1, wherein the disk member has a disk-shaped magnetic recording medium attached to the other surface of the optical disk having the optical information recording area on one surface. 3. The magnetic information recording area is written with reference information for the recording information of the optical information recording area, and the recording information of the optical information recording area is reproduced based on the reference information. The optical disk according to 1. 4. The optical disc, an optical pickup provided at a position facing the optical information recording area of the optical disc, for optically reading the optical recording information from the optical information recording area, and magnetic information of the optical disc. A recording / reproducing apparatus provided with a magnetic head provided at a position facing a recording area, for writing predetermined magnetic information in the magnetic information recording area or for reading predetermined magnetic information from the magnetic information recording area.