JP2002367280A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic apparatus, such as a C driver, containing a decoder or encoder which makes decoding and encoding of data possible only when authentication of an ID is performed by using a system for perform ID authentication wireless. SOLUTION: The ID authentication system comprises slave apparatus (B1 to B5) which send ID codes by a wireless system and a master apparatus (A) which receives the ID codes and collates the same and ID codes for collation recorded to a recording medium for handling the data by the decoder or the encoder. The slave apparatus have at least ID code storing means and ID code transmitting means. The master apparatus has ID code receiving means, ID code reading means and ID authenticating means and have at least okay or not deciding means which decides whether the decoding or encoding of the data by the decoder or encoder described above is okay or not in accordance with the result of the authentication of the ID authenticating means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless I / O system that enables decoding and encoding of data only when ID authentication is performed using a system for wirelessly authenticating IDs.
The present invention relates to an electronic device such as a CD drive device or a DVD drive device having a built-in decoder or encoder using a D authentication system.

[0002]

2. Description of the Related Art Conventionally, a CD on which data is recorded
-To prevent unauthorized duplication of ROMs and DVD-ROMs, and to prevent data from being viewed by anyone other than a specific person, specific information must be stored in a normally unwritable area such as a CD-ROM or DVD-ROM. There was a method of recording an ID code.

According to this, CD-ROM and DVD-R
By adding a function of reading the specific ID code to the playback device such as an OM and determining whether or not the ID code is appropriate, it is possible to determine whether the CD or the like is illegally copied.

Further, the reproducing apparatus inputs a collation ID code at the time of reproducing data, so that the CD-R
By collating with the ID code read from the OM or the like and reproducing the data only when it matches, it is possible to provide a configuration in which only a specific person who knows the collation ID code can view the data.

As a technique using a PC card as a means for inputting security information such as a collation ID code, there is Japanese Patent Application Laid-Open No. 9-185426 "Information Processing Apparatus and Control Method Thereof". This is because when a PC card is inserted into a PC card slot provided in the information processing device,
The security information recorded on the PC card and the security information recorded on the device side are read, and when the two security information match, the system operating on the device is locked or unlocked. It was done.

[0006]

However, a CD-ROM or DVD-R whose data cannot be rewritten as described above.
The recording of a specific ID code in an OM or the like must be performed only at the time of pressing a CD-ROM or the like at a factory, and the user cannot record or change the ID code. Was low.

Also, CD-R, CD-RW, DVD-R
Even when a specific ID code is recorded on a rewritable medium such as an AM, a special device for recording the ID code in a normally non-rewritable area is required, and there has been a problem that the cost increases.

When a PC card is used as a means for inputting security information such as a collation ID code, a PC card slot must be provided on the information processing apparatus side, so that a PC card slot is not usually provided. Desktop personal computers and CD drives,
In order to apply to a DVD drive, there is a disadvantage that it is necessary to add a PC card slot. In particular, general-purpose CD drive and DVD drive are optional PC
Since it is difficult to add a card slot,
It is necessary to newly design a drive incorporating a card slot, a PC card control device, and the like, and there has been a problem that manufacturing costs increase. In addition, there is a disadvantage that a person who wants to browse data always carries a PC card in which an ID code is recorded, which is inconvenient.

The present invention has been devised to solve the above-mentioned problems, and it is possible to decode and encode data only when ID authentication is performed using a system for wirelessly performing ID authentication. It is an object of the present invention to provide an electronic device such as a CD drive device or a DVD drive device having a built-in decoder or encoder.

[0010]

In order to achieve the above object, the present invention provides a system (S) for performing ID authentication, which enables data decoding only when ID code authentication is successful. In an electronic device having a built-in decoder or encoder, the ID authentication system includes a slave device that transmits an ID code by a wireless method (B1 to B1).
5) A master device (CD-ROM) that receives the ID code and collates the ID code with a collation ID code recorded in a recording medium (CD-ROM or the like) handled by the decoder or the encoder to perform ID recognition processing. And the drive device A), wherein the slave device includes at least an ID code storage unit in which a unique ID code is written in advance, and an ID code transmission unit that transmits the ID code to the master device in a wireless manner. Comprising, the master device,
ID code receiving means for receiving an ID code transmitted from a terminal constituting the slave device, and a verification I for reading a verification ID code recorded on the recording medium.
D code reading means, the ID code, and the I
ID authentication means for performing ID authentication processing by comparing with a D code, and permission / non-permission determination means for determining whether or not decoding or encoding of data by the decoder or the encoder is possible based on an authentication result of the ID authentication means. I prepared for it.

[0011] Thereby, only when an appropriate ID code is transmitted from the slave device, decoding or encoding of data by the decoder or the encoder can be enabled or disabled, and thus, such as a CD-ROM or DVD-ROM, etc. It is possible to prevent unauthorized duplication and prevent data other than a specific person from browsing. In addition, the above-described security function can be exerted only by the presence of a slave device near the master device by a wireless method, so that it is not necessary to carry a PC card as in the related art, and the convenience is improved. Further, since it is not necessary to add a PC card slot to a device such as a CD drive serving as a master device, the cost can be reduced.

The recording medium is a CD-ROM, C
DR, CD-RW, DVD-ROM, DVD-RAM
Can be any of This makes it possible to prevent illegal duplication of commonly used recording media and prevent data other than specified ones from browsing.

The ID authentication is performed at 2.4 GHz.
Frequency band (ISM: Industrial Scientific Medical band)
Can be used for ID authentication in two-way communication according to the Bluetooth standard using a carrier wave. As a result, high reliability can be expected for short-range wireless communication, and security can be improved.

The ID code previously stored in the ID code storage means constitutes a 48-bit public key (Bluetooth) provided independently for each user, constituting authentication and encryption rights in the link layer in the Bluetooth standard.
device address), 128-bit fixed secret key used for authentication, 8-bit to 128-bit variable secret key used for encryption, 128-bit RA generated by pseudorandom number device
ND. This allows
It is possible to transmit and receive a highly confidential ID code.

[0015] Further, the ID code storage means, the ID code transmission means, and the ID code reception means of the master device of the slave device can be constituted by modules conforming to the Bluetooth standard.
Thereby, transmission and reception of the ID code with high reliability can be performed.

[0016] The slave device may be a portable telephone conforming to the Bluetooth standard. As a result, it is possible to authenticate the ID code using a portable telephone that is becoming common to carry at all times, and it is possible to improve convenience.

[0017] The slave device may be an electronic device conforming to the Bluetooth standard. As a result, the ID code can be authenticated by a personal computer, a printer, a digital camera, or the like that conforms to the Bluetooth standard, which is expected to spread,
Convenience can be improved.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a block diagram schematically showing a wireless ID authentication system S according to the present embodiment and a CD-ROM drive A equipped with a decoder or encoder using the system.

Since the drive system of the CD-ROM drive A and the control system for reproducing the CD-ROM and the like have a normal configuration, the description is omitted.

The ID code authentication section A1 of the CD-ROM drive A has a CPU (or microcomputer) 1 for controlling the entire authentication process. This CP
The components described below, including U1, are interconnected via a bus 10.

Reference numeral 2 denotes a memory such as a RAM constituting a work area of the CPU 1 and the like. Reference numeral 3 denotes a CD under control based on the result of the ID code authentication process by the CPU 1.
A CD as a recording medium by the ROM drive device A
A decoder for decoding data read from a ROM (not shown); Reference numeral 4 denotes an I / O by the CPU 1 when the CD-ROM drive A supports a rewritable recording medium such as a CD-R or a CD-RW.
An encoder that encodes data to be written under control based on the result of the D code authentication process.

Reference numeral 5 denotes a module conforming to the Bluetooth standard, which is a bidirectional wireless system using the 2.4 GHz ISM band as a carrier. According to the Bluetooth standard, one master device (a device that controls the frequency and timing that is a communication reference in the Bluetooth standard) and up to seven slave devices (a device that synchronizes the frequency and timing with the master device in the Bluetooth standard) are used. This is a type of two-way communication system for connecting and transmitting data via a wireless network. In the present embodiment, a CD-ROM
The drive device A becomes the master device, and the drive device A shown in FIG.
Various electronic devices B5 to B5 constitute a slave device.

In the Bluetooth standard, a master device performs a call scan on a slave device,
Predetermined distance (usually 10m or less in line of sight, maximum 100
If a device that is a slave device exists in m), the device transmits a slave ID to the master device, and when a connection is established, a network called a piconet is formed between the master device and the slave device. It has become.

The module 5 has a configuration as shown in FIG. 2, for example. FIG. 2 is a block diagram showing a schematic configuration of the module 5. Reference numeral 100 denotes a signal processing LSI connected to the CPU 1 for transmitting and receiving signals, reference numeral 101 denotes a transmission / reception dedicated IC including a transmission circuit and a reception circuit,
02 is a transmission transformer for reception, 103 is a transmission transformer for transmission, 104 is a transmission / reception switch,
Reference numeral 105 denotes a noise filter, and reference numeral 106 denotes an antenna.

The module 5 includes a 48-bit public key that constitutes an authentication and encryption right in the link layer according to the Bluetooth standard and is independently assigned to each user.
(Bluetooth device address), 128 used for authentication
Bit fixed secret key, secret key variable from 8 to 128 bits used for encryption, generated by pseudorandom number device 12
An 8-bit RAND is provided, and the data is stored in the signal processing LSI 100, the transmission / reception dedicated IC 101, or a dedicated ROM (not shown). In the present embodiment, the public key, the secret key, or the 128-bit R
One of the ANDs is used as an ID code.

A CD-ROM as a recording medium (not shown)
In a predetermined area of the ROM, a collation ID code to be collated with the ID code is recorded. As the collation ID code, for example, the same ID code as that for permitting authentication may be recorded, or a specific code associated with the ID code in a predetermined manner may be recorded. When the same ID code is recorded as the collation ID code, in the authentication process, it is determined whether the ID code transmitted from the slave device matches with the collation ID code, and a predetermined association is established. When the specified specific code is recorded, it is determined whether or not the ID code transmitted from the slave device satisfies a predetermined condition.

Also, the same as the module 5
It is also mounted on various electronic devices B1 to B5 constituting a slave device. Examples of the various electronic devices B1 to B5 include a desktop personal computer B1, a notebook personal computer B2, a printer B3, a digital camera B4, and a mobile phone B5.

Next, with reference to FIGS. 3 and 4, I-to-D operations performed between the CD-ROM drive device A as a master device and various electronic devices B1 to B5 as slave devices.
The processing procedure of the D authentication processing will be described.

FIG. 3 shows a CD-RO as a master device.
FIG. 4 is a flowchart illustrating a processing procedure of ID authentication processing performed by the M drive device A, and FIG. 4 is a flowchart illustrating a processing procedure of ID code transmission processing performed by various electronic devices B1 to B5 as slave devices.

In the flowchart of FIG. 3, it is first determined in step S1 whether or not a CD-ROM as a recording medium is inserted in the CD-ROM drive A, and if so, the process proceeds to step S2. In step S2,
After reading out the collation ID code recorded in the predetermined area of the CD-ROM, the process proceeds to step S3.

In step S3, an ID code of a device existing in the vicinity is read. Although the specific reading procedure conforms to the Bluetooth standard, in brief, the module 5 of the CD-ROM drive device A as the master device is operated based on a predetermined switch operation or at a predetermined time interval. Scans the slave devices, and if the devices B1 to B5 corresponding to the Bluetooth standard as shown in FIG. 1 exist within a predetermined distance, the modules 5 of the devices B1 to B5 perform I / O according to the procedure shown in FIG.
Send the D code. Here, the processing procedure will be described with reference to the flowchart of FIG. First, step S1
In 00, it is determined whether or not a call scan has been performed,
If it has not been received, it stands by, and if it is determined that it has been received, it proceeds to step S101. Step S
At 101, a call response signal is transmitted to the master device. The master device transmits an FHS packet for establishing a connection based on the call response signal. In step S102, it is determined whether or not the FHS packet has been received. If the FHS packet has not been received, the process stands by. If it is determined that the FHS packet has been received, the process proceeds to step S103, where the ID code is transmitted to the master device. Send.

Thus, the reading of the ID code in step S3 of the flowchart of FIG. 3 is performed.

Next, in step S4, the CD-ROM
From the slave device B1
It is determined whether the ID codes read from .about.B5 match or not. If not, the process returns to step S1. If it is determined that the ID codes match, the process proceeds to step S5. In this example, it is determined whether the collation ID code and the ID code match or not. Instead, it is determined whether the collation ID code and the ID code satisfy a predetermined condition. You may.

In step S5, the data (image data, text data, etc.) read from the CD-ROM is decoded, and in step S6, the data is reproduced, and the process ends.

Thus, the CD-ROM drive A
If there is any of the slave devices B1 to B5 in which an ID code to permit the reproduction of the CD-ROM is present in the vicinity of the CD-ROM, the reproduction of the CD-ROM can be performed by the above procedure. Therefore, even if the CD-ROM is duplicated, it cannot be reproduced unless there is any of the slave devices B1 to B5 that record the ID code to be permitted to be reproduced, so that illegal duplication can be substantially prevented. Also,
For example, when the device that records the ID code to be permitted to be reproduced is limited to the portable telephone B5, only the person who owns the portable telephone B5 can reproduce the CD-ROM, so confidentiality is required. It is possible to increase the security by limiting the viewers of data and the like.

Although the invention made by the inventor has been specifically described based on the embodiments, the present invention is not limited to the above embodiment, and can be changed without departing from the gist of the invention.

For example, in the present embodiment, the CD-ROM drive device A has been exemplified as the master device, but the present invention is not limited to this.
-RW drive device, DVD-ROM drive device, D
The present invention can be applied to a VD-RAM drive device and the like.

Also, a CD-R drive, a CD-RW
In the case of a device such as a drive device or a DVD-RAM drive device that handles a writable recording medium, based on the result of the ID code authentication process, not only reproduction but also writing of data to the recording medium is permitted. it can. Accordingly, for example, only a person who has a portable telephone that records an ID code to which data writing should be permitted can write data, which can contribute to prevention of data tampering and the like.

[0040]

According to the present invention, the decoding or encoding of data by the decoder or the encoder can be enabled or disabled only when an appropriate ID code is transmitted from the slave device.
This has the effect of preventing unauthorized duplication of the OM, DVD-ROM, etc., and preventing data other than a specific person from browsing.

[Brief description of the drawings]

FIG. 1 is a block diagram schematically showing a wireless ID authentication system according to an embodiment and a CD-ROM drive device equipped with a decoder or an encoder using the system.

FIG. 2 is a block diagram illustrating a schematic configuration of a module.

FIG. 3 is a flowchart illustrating a procedure of an authentication process performed by a master device.

FIG. 4 is a flowchart illustrating an ID code transmission process performed by a slave device.

[Explanation of symbols]

 A CD-ROM drive device (master device) 1 CPU 2 memory 3 decoder 4 encoder 5 module B1 to B5 slave device

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Claims (8)

[Claims] 1. An electronic device incorporating a decoder or an encoder capable of decoding data only when an ID code is authenticated using an ID authentication system, wherein the ID authentication system is 2.4 GHz. Device that transmits an ID code by a wireless method conforming to the Bluetooth standard that uses the frequency band as a carrier wave, and a CD that receives the ID code and is used by the decoder or the encoder
-ROM, CD-R, CD-RW, DVD-ROM, D
A master device that performs an ID recognition process by collating with a collation ID code recorded on any recording medium of a VD-RAM, wherein the slave device has an ID in which a unique ID code is written in advance. Code storage means; and ID code transmission means for transmitting the ID code to a master device in a wireless manner, wherein the master device stores an ID code transmitted from a terminal constituting the slave device. ID code receiving means for receiving, collation ID code reading means for reading a collation ID code recorded on the recording medium, and performing ID authentication processing by comparing the ID code with the collation ID code ID authentication means, and decoding of data by the decoder or the encoder based on an authentication result of the ID authentication means. Electronic apparatus, characterized in that others comprise a permission determination means for determining whether the encoding, at least. 2. An electronic device incorporating a decoder or an encoder that enables decoding of data only when ID code authentication is established by using an ID authentication system, wherein the ID authentication system uses a wireless system. A slave device that transmits an ID code, and a master device that receives the ID code and collates with a collation ID code recorded on a recording medium handled by the decoder or the encoder to perform ID recognition processing. The slave device includes at least an ID code storage unit in which a unique ID code is written in advance, and an ID code transmission unit that transmits the ID code to a master device by a wireless method. ID code reception for receiving an ID code transmitted from a terminal constituting the slave device And a collation ID code reading unit that reads a collation ID code recorded on the recording medium; an ID authentication unit that compares the ID code with the collation ID code to perform an ID authentication process; An electronic device, comprising: at least a determination unit that determines whether decoding or encoding of data is performed by the decoder or the encoder based on an authentication result of the ID authentication unit. 3. The recording medium is a CD-ROM, a CD-ROM,
The electronic device according to claim 2, wherein the electronic device is any one of R, CD-RW, DVD-ROM, and DVD-RAM. 4. The electronic apparatus according to claim 2, wherein said ID authentication is ID authentication in bidirectional communication according to the Bluetooth standard using a frequency band of 2.4 GHz as a carrier. . 5. An ID code previously stored in the ID code storage means constitutes a link layer authentication and encryption right in the Bluetooth standard, and includes a 48-bit public key independently assigned to each user, 128-bit fixed secret key used for encryption, 8-12 used for encryption
The electronic device according to any one of claims 2 to 4, wherein the electronic device is configured by one of a secret key variable up to 8 bits and a 128-bit RAND generated by a pseudo random number device. 6. The device according to claim 1, wherein said ID code storing means, said ID code transmitting means, and said ID code receiving means of said master device are constituted by modules conforming to said Bluetooth standard. The electronic device according to claim 2. 7. The electronic device according to claim 2, wherein the slave device is a portable telephone conforming to the Bluetooth standard. 8. The electronic device according to claim 2, wherein the slave device is an electronic device conforming to the Bluetooth standard.