JP3478286B2 - optical disk - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc and an optical disc device using the same, and more particularly to an optical disc having a storage means for digital data on a part of a recording surface thereof and the optical disc device.

[0002]

2. Description of the Related Art Of optical disks, a compact disk (hereinafter abbreviated as CD) which is an optical disk for reproducing music is a CD-ROM to which data is recorded for a computer.
Is becoming widely used.

[0003]

The CD-ROM is made of plastic and a large amount of data-recorded discs can be produced inexpensively by using a mold. On the other hand, the CD-ROM is a read-only disc and is later formed on the disc. No data can be recorded. Therefore, even if the data on the disc is processed and the result is recorded and stored on the disc, it cannot be recorded, which is inconvenient. Of course, there are recordable optical discs, but the optical disc cannot be produced by the above-mentioned method, which requires a complicated production process and becomes expensive. When data is recorded and shipped, the data must be recorded on each disc. Further, in order to record, a large amount of optical output of the optical head is required as compared with a read-only device, and the price of the recording / reproducing device becomes high.

An object of the present invention is to provide a means for recording on a read-only optical disk later at a low cost.

[0005]

Therefore, an optical disc of the present invention is an optical disc having an optically reproducible data recording area, and an input unit for inputting data in a non-contact manner and a data input by the input unit. And a data storage means for storing the stored data and an output means for outputting the stored data in a non-contact manner.
It is installed in a circle centered on the same axis as the rotation center axis of the disk.
And a power supply input means for contactlessly inputting a power supply to the data storage means, separately from the input means and the output means. Further, an optically reproducible data recording area, input means for inputting data in a contactless manner, data storage means for storing data input by the input means, and output for outputting the stored data in a contactless manner An optical disc having means, wherein the data storage means performs error correction on the data input by the input means.

Further, in the optical disk device of the present invention, an optically reproducible data recording area, input means for inputting data, data storage means for storing data input by the input means, and stored data are stored. Outputting means for outputting and power supply inputting means for non-contactly inputting power to be supplied to the data storing means, means for rotating the optical disc, optical pickup for reproducing data in the data recording area, and optical disc Has output means for contactlessly outputting data to the input means in the optical disc, and input means for inputting data output from the output means in the optical disc in a non-contact manner, and further supplies power to the power supply input means in the optical disc. The power supply output means for non-contact output is separate from the output means for non-contact data output and / or the input means for non-contact data input. Characterized in that it has.

By recording the data necessary for the digital data recording / reproducing means formed on a part of the read-only optical disk, for example, the data on the disk is processed and the result is recorded on the disk. It can be recorded and saved.

[0007]

The present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an embodiment of the optical disc of the present invention. A digital data storage means 3 is formed concentrically with the recording track 2 of the optical disc 1. Reference numeral 4 is a hole for mounting the disc on the recording / reproducing apparatus. FIG. 2 shows an outline of the internal function of the digital data storage means 3.
The cross section is shown in FIG. Inside the digital data storage means 3 for storing digital data, it is necessary to rectify and smooth the output of the antenna 5 and the antenna 5 for electromagnetically coupling with an external antenna to input power. A power supply unit 6 for supplying power to various places, an antenna 7 for inputting / outputting digital data, a data processing unit 8 for processing digital data input / output by the antenna 7, and a digital data
Memory 9 for storing data. The antennas 5 and 7 are circumferentially installed near the surface of the digital data storage means 3 as shown in FIG. 3, and the magnetic material 10 is used to further increase the efficiency of the antenna and to avoid mutual interference between the antennas 5 and 7. Is attached. Reference numeral 12 is a circuit board, which is fixed to the optical disc on the side thereof. Also,
Numeral 11 is a fluororesin-coated surface having a slippery surface so that the antennas 5 and 7 can be protected and the digital data storage means 3 can be operated even if the digital data storage means 3 is brought into contact with the antenna on the apparatus side. It is a layer.

A block diagram of the inside of the data processing unit 8 is shown in FIG.
Shown in. The operation will be described. Necessary power is supplied from the antenna 5. First, recording of data will be described. When a command to record data, data to be recorded and its address are input from the antenna 7, the command detection unit 13 extracts the command from the input data and the command is sent to the control unit 14. Given. Destined by the command
The data detector 15 detects and stores the data to be stored from those data, detects the address of the memory to be recorded, and sends it to the data recorder 16. The data recording unit 16 gives the address to the memory 9 and records the data stored in the data detection unit 15 in the memory 9. Next
The reproduction of data will be described. A command to reproduce the data from the antenna 7, the address of the first data to be reproduced and the data
When the amount of data is input, the command detection unit 13 extracts the command from the input data and the command is given to the control unit 14. In response to the command, the data reproducing section 17 gives the address to be reproduced to the memory 9 and the memory 9
The data stored in is reproduced and stored. The data output unit 18 outputs the data stored in the data reproducing unit 17 to the antenna 7.

FIG. 7 shows an embodiment of an optical disk recording / reproducing apparatus of the present invention. The signal obtained from the optical pickup provided on the actuator 25 is amplified by the optical signal processing unit 26, the data is demodulated, the error is corrected, and the bus 2
4 is output. Recording of digital data will be described.
When data and an address to be recorded in the memory 9 on the optical disk are input from the bus 24 to the recording unit 27, a recording command is input to the control unit 29, and the command is given to the recording unit 27, the recording unit 27 transmits the recording command, the data to be recorded and the address to the optical disc via the antenna 23. Recording is performed on the optical disk by these data. Next, reproduction of digital data will be described. When a reproducing command is input to the control unit 29, the command is given to the reproducing unit 28, and the address of the first data to be reproduced and the amount of the data are given to the reproducing unit 28, the reproducing unit 28 receives the command. 28 transmits a reproduction command, the address of the first data to be reproduced, and the amount of data to the optical disk via the antenna 23. Furthermore, from the optical disk to the antenna 2
It stores the data transmitted via 3 and outputs the data to the bus 24. The power supply drive circuit 30 supplies the power to the antenna 23 only when performing the above-mentioned recording or reproduction processing.
Is supplied to the optical disc via.

The structure of the antenna 23 will be described. The cross section is shown in FIG. An antenna 20 for power transmission and an antenna 39 for data transmission are circumferentially provided at positions corresponding to the positions of the antennas on the optical disk. Further, a magnetic body 37 is attached to increase the efficiency of the antenna and to avoid mutual interference between the antennas 20 and 39. Further, 38 protects the antennas 20 and 39, and further the antenna 2 on the device side.
3 is a layer processed to have a slippery surface such as a fluororesin processing so that the digital data storage means 3 can be operated by being brought into contact with the digital data storage means 3. The antenna 23 is supported by a support member 35 and a spring 34 which are coupled to the device, and absorbs a height variation due to the rotation of the optical disc in a contact state. In this way, the magnetic bodies 10 and 37 are provided and the layer 1 is formed.
In order to rotate the optical disk by bringing them into contact with each other by 1, 38, data can be recorded / reproduced while the optical disk is rotating, and the power supply and the data can be transmitted with high efficiency. Of course, it is possible to omit them, but in that case, the transmission efficiency becomes poor. Needless to say, conductors are drawn from the antennas 20 and 39.

FIG. 5 shows another embodiment of the optical disk of the present invention. Instead of the antenna 7, an optical coupling element 19 composed of a light emitting element and a light receiving element is used to transmit digital data. The optical coupling element 19 is installed almost in the center of the disk and enables transmission of data while the disk is rotating.

FIG. 6 shows a sectional view of the antenna 23 and the optical disc of the recording / reproducing apparatus when the optical disc having the optical coupling element 19 is used. Reference numerals 21 and 19 are optical coupling elements. The central portion of the digital data storage means 3 is recessed as shown in the figure, and the optical disc 1 can be mounted on the table 22 of the recording / reproducing apparatus as shown in the figure. Crosstalk between antennas can be reduced by exchanging data with light as in the present invention.

Various semiconductor memories can be used as the memory used in the present invention. The digital data storage means 3 may be removable.

Further, the data processing section 8 or the control section 14
It is possible to perform functions such as encryption processing of recorded data or protection of data by a personal identification number by configuring the above with a microprocessor. Also, error correction of data transmitted through the antenna may be performed.

[0016]

According to the present invention, a recording / reproducing means for digital data is formed on a part of a reproduction-only optical disk, and means for recording / reproducing the data is provided. By recording the data necessary for the recording / reproducing means of the digital data of the optical disk, for example, it becomes possible to process the data on the disk and record and store the result on the disk.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of an optical disc having a data recording means of the present invention.

FIG. 2 is a diagram illustrating an outline of functions of a digital data storage unit shown in FIG.

FIG. 3 is a sectional view of a digital data storage unit 3 shown in FIG.

FIG. 4 is a block diagram of a data processing unit 8.

FIG. 5 is a diagram showing another embodiment of the optical disc having the data recording means of the present invention.

6 is a sectional view of the digital data storage unit 3 and the antenna 23 shown in FIG.

FIG. 7 is a diagram showing an embodiment of an optical disc recording / reproducing apparatus of the present invention.

FIG. 8 is a cross-sectional view of an antenna 23 of the optical disc recording / reproducing apparatus of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Optical disk, 2 ... Recording track, 3 ... Digital data storage means, 5/7/22/25 ... Antenna, 9 ... Memory, 19 ... Optical coupling element

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Junya Kadama, 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Hitachi, Ltd. Information & Video Media Business Department (72) Hiroaki Nakamura 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Address: Hitachi, Ltd., Information & Video Media Business Department (56) Reference JP-A-5-54460 (JP, A) JP-A-63-187486 (JP, A) Kai 62-134783 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G06K 19/07-19/08 G11B 7/004

Claims (5)

(57) [Claims] 1. An optical disc having an optically reproducible data recording area, comprising input means for inputting data in a contactless manner, data storage means for storing data input by the input means, and the stored data. Output means for outputting the contactless data in a non-contact manner, the input means and the output means
Is approximately coaxial with the rotation center axis of the optical disk.
An optical disc, characterized in that it has a power supply input means that is provided in a circular shape and that inputs power supplied to the data storage means in a contactless manner, separately from the input means and the output means. 2. The optical disc according to claim 1 , wherein the data storage unit performs error correction on the data input by the input unit. 3. The optical disc according to claim 1, wherein the input unit and / or the output unit is an electromagnetic coupling unit, and the power supply input unit is an optical coupling unit. 4. The optical disc according to claim 1, wherein the input unit and / or the output unit is an optical coupling unit, and the power input unit is an electromagnetic coupling unit. 5. The optical disc according to any one of claims 1 to 4, further comprising: a magnetic body that strengthens electromagnetic coupling between the input means and / or the output means,
An optical disc having an output means and a power input means so as to surround the input means .