JPH10289564A - Recording medium device and recording medium reproducing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to provide a restriction to read data from a recording medium or externally output the read data, and to substantially block a duplication of an original recording medium. SOLUTION: An optical disk 5 is loaded with a non-contact data carrier 1 having registered management information for limitedly allowing a specific reproducing system to read data or externally output the read data by a reproducing device 4. A host 3 for controlling the reproducing device 4, when receiving a reproducing instruction, communicates with non-contact data-carrier 1 and receives management information, comparing the received management information with the system-peculiar management information given to the host computer beforehand, and instructing the reproducing device 4 to execute reproducing the disk, only in a case of an agreement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to, for example, a CD-RO
The present invention relates to a recording medium device and a recording medium reproducing system applicable to optical recording media such as M, magnetic recording media such as magnetic disks and magnetic tapes, and other various recording media.

[0002]

2. Description of the Related Art Various types of digital recording media, such as optical disks, magnetic disks, magneto-optical disks, and magnetic tapes, for recording software information and the like have been commercialized. Such a digital recording medium allows the user to make an almost perfect copy from the original without any restrictions, which is a useful property for the user, but on the other hand, the copyright of the original creator is copyrighted. The problem of damage occurs.

[0003] Such a problem causes a recording / reproducing system capable of high-precision digital copying to run in a manner that rejects it, hindering the development of excellent information transmission technology, and in the negative direction from the development of technology. The phenomenon that has to be focused on is created. For example, when copying digital information on the original recording medium, noise is mixed into the copy information, or signal processing is performed such that the quality of the copy information gradually deteriorates as the number of copies increases.
Alternatively, measures are taken to reduce the sampling frequency.

[0004]

The recording medium on which digital information is recorded as described above has a problem in that it can be easily copied. Conventionally, the extent to which copying on the user side is permitted has been regarded as a problem due to copyright issues. For this reason, measures to restrict the copying of digital information in perfect form on the recording / playback system have been considered. However, such a movement has been reversed in view of the development of information transmission technology, and it is difficult to determine that it is a preferable method.

Accordingly, the present invention provides a recording medium device capable of restricting the reading of data from a recording medium and the external output of the read data, and substantially preventing the duplication of an original recording medium. And a recording medium reproduction system.

Further, according to the present invention, it is possible to set restrictions on reading out information from a recording medium and external output without modifying the recording data on the recording medium. For the purpose of providing.

[0007]

In order to achieve the above object, a recording medium device according to the present invention has a storage device in which management information for restricting readout by a reproducing device or external output of readout record data is stored. A non-contact data carrier comprising means for receiving an inquiry signal from the playback apparatus and transmitting the management information as a response signal.

[0008] The recording medium reproducing system of the present invention is a recording medium reproducing system for reproducing a recording medium on which the non-contact data carrier is mounted, a communication means for communicating with the non-contact data carrier, and the non-contact data carrier. Requesting means for requesting transmission of the management information through the communication means, receiving means for receiving the management information transmitted from the non-contact data carrier through the communication means in response to the request of the requesting means, And control means for performing control for restricting reading from the recording medium or external output of the read recording data based on the management information received by the receiving means.

That is, the recording medium reproduction system of the present invention controls the reading of the recording medium or the external output of the read recording data from the recording medium through communication of management information with a non-contact data carrier mounted on the recording medium. There is a characteristic in that it is performed. More specifically, unique management information such as a customer approval number and a serial number, which are fixedly held by the system, are registered in the contactless data carrier, and when a playback request is issued, the management is performed from the contactless data carrier. A request for information transmission is made, the received management information is compared with the system-fixed management information, and if they match, execution of the above operation is permitted. If they do not match, execution of the above operation is prohibited.

Therefore, according to the present invention, it is possible to limit a reproduction system capable of reading out the recorded data for each recording medium or externally outputting the read recording data,
Also, even if the user can copy the recording data of the original recording medium to another recording medium,
As a result of the comparison check of the management information, the execution of the reproduction command for the recording medium in the reproduction system is rejected, so that the duplication of the original recording medium can be substantially prevented.

The registration of the management information in the contactless data carrier may be performed by a reproduction system. In this case, the reproduction system identifies the type of the set recording medium through communication with the non-contact data carrier, and transmits system-specific information such as a serial number to the type of the recording medium set for the first time in the system. And register it in the contactless data carrier. In order to recognize the type of recording medium set in the system for the first time, the name of the recording medium along with the management information on the non-contact data carrier,
In addition to registering the identification information such as the date of manufacture, the system receives and registers the identification information from the non-contact data carrier of the set recording medium. This allows
By comparing the identification information of the newly set recording medium with the registered identification information, it is possible to determine whether the recording medium is the first set recording medium in the system.

If the recording medium is not the first recording medium set in the system, the system requests the non-contact data carrier to transmit management information, compares the management information, and reads out the recording data from the recording medium or externally stores the read recording data. Execute control to regulate output.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a recording medium reproducing system according to a first embodiment of the present invention.

As shown in FIG. 1, the recording medium reproducing system according to this embodiment includes a non-contact data carrier 1 as a transponder mounted on a recording medium such as an optical disk, and a non-contact data carrier 1. For example, magnetism, induction fields,
A read writer 2 as an interrogator for performing non-contact communication via a transmission medium such as a microwave (radio wave); and a read writer 2
It mainly comprises a host computer 3 capable of exchanging information with the non-contact data carrier 1 through the network, and a reproducing device 4 for reading and reproducing information from a recording medium under the control of the host computer 3. .

FIG. 2 shows the structure of a recording medium reproduced by the recording medium reproducing system of this embodiment. Here, an example in which an optical disk is used as a recording medium will be described. The non-contact data carrier 1 is mounted (embedded) on a portion other than the recording area of the optical disc 5, for example, on the inner peripheral portion of the recording area.
Have been. Further, as shown in FIG.
May be located at any position as long as it can communicate with the non-contact data carrier 1 mounted on the optical disk 5 set in the reproducing apparatus 4.

As shown in FIG. 1, the lead writer 2 comprises:
A main control unit 11 for performing the overall control; an interface unit 12 for controlling input / output of data to / from the host computer 3; and a storage such as a readable / writable RAM for storing information and the like received from the non-contact data carrier 1. Part 1
3, a signal converter 14 for converting transmission information from a parallel signal to a serial signal and for converting a reception signal from the non-contact data carrier 1 from a serial signal to a parallel signal.
And a transmission signal, for example, ASK (Amp litude ShiftKeyin).
g) system, a modulation unit 15 for modulating a signal for transmission by a FSK (Frequency Shift Keying) system, a demodulation unit 16 for demodulating a received signal, a transmitting antenna 17, and a receiving antenna 1.
8 is provided.

On the other hand, the non-contact data carrier 1 has a main control section 21 for controlling the whole non-contact data carrier 1.
And a storage unit 2 such as an EEPROM that does not require a power supply backup
2, a signal conversion unit 23 that converts transmission information from a parallel signal to a serial signal, and converts a reception signal from the reader / writer 2 from a serial signal to a parallel signal, and transmits a transmission signal using an ASK method, an FSK method, or the like. , A demodulation unit 25 for demodulating a received signal, a transmission antenna 26, and a reception antenna 27.

The storage section 22 of the non-contact data carrier 1 stores various management information relating to the optical disk 5, in which the reading of data by the reproducing apparatus 4 or the external output of the read data is restricted, that is, specified. Management information for permitting only the reproduction system of this type. These management information are transmitted as a response signal of the non-contact data carrier 1 when an inquiry signal is received from the reader / writer 2 connected to the host computer 3.

When the host computer 3 receives a disc reproduction command from the user, it transmits an inquiry signal through the read writer 2 and requests the non-contact data carrier 1 to transmit management information. In response to the request, the management information transmitted from the non-contact data carrier 1 is received, and based on the management information, control is performed to restrict the reading from the disk 5 by the reproducing device 4 or the external output of the read data. It has been.

Next, the operation of the recording medium reproducing system of the present embodiment will be described with reference to the flowchart of FIG.

When a reproduction command is given to the host computer 3, the host computer 3 first
, An inquiry signal for requesting transmission of management information is transmitted to the non-contact data carrier 1 mounted on the optical disk 1 (step S1). The contactless data carrier 1 that has received the inquiry signal (step 2) reads the management information stored in the storage unit 22 (step S3),
This management information is transmitted as a response signal (step S
4).

After receiving the management information (step S5), the host computer 3 compares the management information with system-specific management information given to the host computer 3 in advance (step S6). The system-specific management information given to the host computer 3 may be any information, such as its serial number, date of manufacture, etc., as long as it can identify each product.

As a result of the comparison, when the respective information do not match, the host computer 3 does not instruct the reproducing device 4 to execute the disk reproduction despite the reproduction instruction being given (step 7). Only when the pieces of information match, the reproduction apparatus 4 is instructed to execute the disk reproduction (step 8). The reproducing device 4 starts driving the disk in accordance with the instruction to execute the disk reproduction, and starts reading and reproducing data from the disk 5.

Therefore, in this embodiment, for each recording medium such as an optical disk, it is possible to limit a reproduction system capable of reading the data or outputting the read data to an external device. Even if data is read from the medium and this is recorded on another recording medium to produce a duplicate of the original recording medium, in the management information check step, reading from the recording medium or external output of the read data is Since the rejection is made in all the reproduction systems having the configuration of the present embodiment, duplication of the original recording medium can be substantially prevented.

In addition, by registering management information of a plurality of reproduction systems in a non-contact data carrier according to an agreement between a disk provider and a user, a user can share an optical disk common to a plurality of systems. It is also possible to make it reproducible.

Next, the operation of the recording medium reproducing system according to the second embodiment of the present invention will be described with reference to the flowchart of FIG.

This embodiment is characterized in that the reproduction system registers management information in the non-contact data carrier 1 mounted on the optical disk 5 by itself.

In the storage unit 22 of the non-contact data carrier 1 mounted on the optical disk 5, in the initial state, information that can individually identify the optical disk, such as the name of the disk and the date of manufacture, is stored. Shall be.

Hereinafter, the operation of the recording medium reproducing system will be described with reference to the flowchart of FIG.

When a reproduction command is given to the host computer 3, the host computer 3 first
, An inquiry signal for requesting transmission of identification information to the non-contact data carrier 1 mounted on the optical disc 1 is transmitted (step S1). The contactless data carrier 1 that has received the inquiry signal (step 2) reads the identification information stored in the storage unit 22 (step S3),
This identification information is transmitted as a response signal (step S
4).

After receiving the identification information (step S5), the host computer 3 compares the identification information with the already stored identification information, and determines that the optical disk set this time is the first type of optical disk. It is determined whether or not there is (step S6). That is, the host computer 3 stores the identification information of the optical disk that has been reproduced in the past, and the host computer 3 compares the identification information with the identification information to determine whether the optical disk set this time is the first optical disk set. Can be identified.

If the optical disk is set for the first time, the host computer 3 transmits system-specific information such as a serial number and registers it as management information in the storage unit 22 of the non-contact data carrier 1 (step S7). .
If it is not the first loaded optical disc,
The host computer 3 requests the contactless data carrier 1 to transmit the management information (step S8), and receives the management information transmitted from the contactless data carrier 1 in response to the request (step S9). Hereinafter, similarly, the host computer 3 performs control for restricting reading from the optical disc or external output of the read recording data by the reproducing device 4 by comparing the management information. Therefore, according to the recording medium reproduction system of this embodiment, after purchasing the recording medium, only the reproduction system in which the recording medium is set first is allowed to read data from the recording medium or to externally output the read data. Becomes Further, even if data is read from a recording medium by a specific reproduction system and is recorded on another recording medium to produce a duplicate of the original recording medium, in the management information check step, reading from the recording medium or Since the external output of the read data is rejected in all the reproduction systems having the configuration of the present embodiment, duplication of the original recording medium can be substantially prevented.

The system for comparing and collating management information on the host computer has been described above. The comparison and collation of management information are performed by the main controller on the non-contact data carrier side, and the comparison and collation result is transmitted to the host computer. You may comprise so that it may transmit and perform the same control.

In this embodiment, an example is described in which a non-contact data carrier is mounted on an optical disk. However, other recording medium devices, for example, as shown in FIG.
A non-contact data carrier may be embedded in the case side surface of the AT 31.

In the recording medium reproducing system according to the present embodiment, when the reproducing apparatus 4 receives a disc reproducing command from the user, the host computer 3 communicates with the non-contact data carrier 1 through the read writer 2 to read out. Alternatively, the control for restricting the external output of the read data is performed. For example, a microcomputer for performing overall control in the reproducing apparatus is made to communicate with the non-contact data carrier 1 through the read writer 2, and the above control is performed. You may make it perform.

[0037]

As described above, according to the present invention,
For each recording medium, it is possible to limit a reproducing system capable of reading the recorded data or a reproducing system capable of externally outputting the read recorded data, and even if the recording medium is duplicated, the reproduction system can reproduce the recorded data. Therefore, duplication of the original recording medium can be substantially prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a recording medium reproducing system according to a first embodiment of the present invention;

FIG. 2 is a diagram showing a structure of a recording medium reproduced by the recording medium reproducing system of FIG. 1;

FIG. 3 is a diagram showing a positional relationship between a non-contact data carrier and a read writer in the recording medium reproducing system of FIG. 1;

FIG. 4 is a flowchart showing a procedure of readout restriction control in the recording medium reproduction system of FIG. 1;

FIG. 5 is a flowchart showing a procedure of read restriction control in the recording medium reproduction system according to the second embodiment of the present invention;

FIG. 6 is a diagram showing another application example of the recording medium according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Non-contact data carrier 2 ... Read writer 3 ... Host computer 4 ... Reproducing device 5 ... Optical disk 22 ... Storage part of non-contact data carrier

Claims (4)

[Claims] 1. A storage means for storing management information for restricting read-out by a playback device or external output of read-out recording data, and a response signal which receives an interrogation signal from the playback device and sends the management information to a response signal. A recording medium device comprising a non-contact data carrier equipped with a transmitting means for transmitting the data as a non-contact data carrier. 2. A storage means for storing management information for restricting readout by a playback device or external output of read-out recording data, and a response signal for receiving an inquiry signal from the playback device side and sending the management information to a response signal A recording medium reproducing system for reproducing a recording medium mounted with a non-contact data carrier, comprising: a transmitting and receiving unit that transmits the non-contact data carrier; and a communication unit that performs communication with the non-contact data carrier; Requesting means for requesting transmission of management information through the communication means; receiving means for receiving management information transmitted from the non-contact data carrier through the communication means in response to a request from the requesting means; receiving by the receiving means Restricts reading from the recording medium or external output of the read recording data based on the management information Recording medium reproducing system characterized by comprising a control means for controlling that. 3. A storage unit and system-specific management information for restricting an external output of read data or read record data by the playback device, which is transmitted from the playback device, and registers the management information in the storage device. A non-contact data carrier comprising: a registration unit; and a transmission unit that receives a query signal from the playback device and transmits management information stored in the storage unit as a response signal. Recording medium device. 4. A storage unit, and a registration unit for receiving management information for controlling the external output of read data or read recording data by the playback device, which is transmitted from the playback device, and registering the management information in the storage unit. And a recording medium reproduction system for reproducing a recording medium mounted with a non-contact data carrier, the transmission medium including transmission means for transmitting management information stored in the storage means in response to a request from the reproduction apparatus. Communication means for communicating with the contact data carrier; management information transmitting means for transmitting predetermined system-specific management information through the communication means and registering the information in the storage means of the non-contact data carrier; and the recording medium. Request means for requesting transmission of registration management information to said contactless data carrier through said communication means when a reproduction request of Receiving means for receiving the management information transmitted from the contactless data carrier in response to the request through the communication means, and comparing the management information received by the receiving means with the system-specific management information, A recording medium reproducing system, comprising: a control unit that controls a read operation from the recording medium or an external output of the read recording data based on the comparison result.