JP2003187524A - Rental system using rfid chip mounted recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rental business system capable of preventing unauthorized use, protecting recorded information and managing rental conditions for information such as music or images recorded on a computer recording medium so as to be reproduced. <P>SOLUTION: This system is configured, which uses an RFID chip mounted recording medium (RFID mounted recording medium, i.e., a CD, a DVD or the like), encrypts rental information (content) to be protected and records it on the recording medium surface, writes a decoding key or rental conditions (rental data, the number of times of use, or the like) on the RFID chip, protects the information and manages rental time. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a CD in a rental shop.
Hardware and software technologies that enable a rental form with a higher degree of freedom than conventional rental forms when renting out content on large-capacity digital recording media such as DVDs and DVDs, and rentals backed by that technology Regarding the system.

[0002]

2. Description of the Related Art Currently, rental business is very popular. Above all, videotape rental has become part of our daily lives. Recently, DVDs are becoming the object of rental instead of videotapes. DV
Since D is a digital image, there is no deterioration of information even when used for a long time like a tape. Moreover, since it does not take up much space, many products can be displayed. On the other hand, the leakage of information by copying data is becoming a problem. Under such circumstances, new attempts are being made.

In "Information recording medium and information recording medium recording / reproducing apparatus" (Japanese Patent Laid-Open No. 2001-23315), a second UTOC of a disk is used.
It describes an apparatus that records access information such as access date, number of pages, and charges in an area and enables a rental shop to charge a charge according to the access status. In the "optical disc recording / reproducing apparatus" (Japanese Patent Laid-Open No. 7-130147), the same kind of invention limited to the optical disc of the above-mentioned published patent is mentioned. "Rental system using disc-shaped recording medium, rental disc reproducing device and rental disc cartridge used in such system" (Japanese Patent Laid-Open No. 10-154180) allows rewriting to a rental disc cartridge for storing a disc medium such as a DVD. An IC memory such as a flash memory is attached, and the disk medium can be rotated with the disk medium housed therein.
It describes a system for charging based on information used in rental shops and a device that enables it.

Recently, RFID chips have attracted attention as IC chips. Application fields using RFID chips include personal authentication, product identification, and position measurement. RFID (Radio
Frequency IDentification: Non-contact automatic identification technology by radio frequency) is a technology that stores information and enables non-contact reading. For example, there is a high-speed toll collection system in which an RFID is used to automatically identify a car at a high-speed toll gate, and a high-speed toll is automatically collected according to automatic identification.
In this method, personal information is recorded on the RFID chip mounted on the car, the RFID information is read by a RFID reader installed at the tollgate in a contactless manner, and the read personal information is sent to the central computer, Charges will be made.

The RFID chip can read recorded information in a non-contact manner, operates without a battery, and has excellent durability and weather resistance. RF
The ID chip is battery-less, but the radio waves emitted from the RFID reader / writer cause a current to flow in the RFID chip due to electromagnetic induction, and the circuit built into the RFID chip operates. Computer circuits can be built into the RFID chip, not only as a tool for recording and storing information, but also as logic circuits for security management.
In addition, the RFID chip uses a non-volatile RAM (a type of memory that can read and write and save the records in the memory), and is usually used as a ROM. For example, a usage pattern in which a RFID chip is embedded in a commuter pass and automatic ticket processing is performed in a non-contact type, and a usage pattern in which an RFID chip is embedded in an identification card to perform personal authentication are considered.
Depending on the size of the RFID chip and the length of the antenna connected to it, contactless operation is possible from a distance of a few millimeters to a distance of several meters. Therefore, application in a wide range of fields is expected.

There are many patent applications relating to RFID, such as "Unauthorized access prevention method in non-contact data carrier system" (Japanese Patent Laid-Open No. 2000-259571) and "Merchandise management system" (Japanese Patent Laid-Open No. 2001-031218). The former is a method of preventing unauthorized access to an RFID computer, and the latter is a management method of attaching an RFID chip to a product to manage the product.

[0007]

As mentioned in the prior art, the maximum rental period for videotapes, DVDs, or music CDs at rental video stores is often one week. However, if you forget to return it, the return deadline is 1
There are quite a few cases where it takes much longer than a week and the video must be returned without watching it. In the case of music, it may be repeatedly listened to, but in the case of a movie, once viewed, it is rare to be seen repeatedly a few times. There are many users who think that they can be seen by the number of times.

[0008] In addition, in the case of repeatedly watching after a while, in the form in which the current rental shop is used, it is necessary to visit the rental shop again. For such rental, the rental method of collecting a rental fee according to the number of times of use (number of times of access) is flexible and convenient for the user. Such a rental method is
Means listed in "Information recording medium and information recording medium recording / reproducing apparatus" and "Rental system using disc-shaped recording medium, rental disk reproducing apparatus and rental disc cartridge used in such system" mentioned in the prior art It is possible if used. However, in the case of the charging method according to the usage amount, unless the charging rule is clarified, the turnover ratio of the lending medium and the fund may be deteriorated.

In view of the above points, the problem to be solved by the present invention is to use a technique different from the above-mentioned published patents for CD and DV.
It is to develop a system that enables a rental business such as D and provide a rental system with many advantages to both users and rental shops. Another object of the present invention is to protect recorded information on a recording medium (prevent unauthorized use of information by illegal copying).

[0010]

In order to solve the problems to be solved by the above-mentioned invention, in the present invention, a recording medium on which an RFID chip is mounted (RFID-equipped recording medium, specifically a CD
, DVD, etc.) to encrypt the rental information (content) you want to protect and record it on the surface of the recording medium, and write the decryption key and lending conditions (lending date, number of uses, etc.) to the RFID chip to protect and lend information. Build a system to manage time.

The invention described in claim 1 is a CD or a DV.
In a rental system in which contents such as music, movies and games are recorded on a digital recording medium such as D, and the digital recording medium is lent, (1) an RFID chip is placed in a place different from the content recording area of the digital recording medium. , The encrypted content is recorded in the recording area, the lending management means of the RFID chip-equipped recording medium for lending to the user by recording lending management information such as the decryption key and the lending period in the RFID chip, ( 2) A user who rents the recording medium equipped with the RFID chip can reproduce and use the content within the range of the lending management information recorded in the RFID chip by using a player with an RFID reader / writer.
It is a recording medium rental system equipped with an RFID chip, which is provided with a lending control means which makes it impossible to reproduce contents when the content exceeds the lending management information.

The invention described in claim 2 is a CD or a DV.
In a rental system in which contents such as music, movies and games are recorded on a digital recording medium such as D, and the digital recording medium is lent, (1) an RFID chip is placed in a place different from the content recording area of the digital recording medium. Embedded content, the encrypted content is recorded in the recording area, the lending management information including the lending management information including the lending deadline in the RFID chip and rented to the user, (2) the RFID A user who rents a chip-mounted recording medium can reproduce and use the content within the loan period recorded in the RFID chip using a player with an RFID reader / writer, and when the loan period is exceeded. It is a recording medium rental system equipped with an RFID chip, which is provided with a lending control means that makes it impossible to reproduce contents by .

The invention described in claim 3 is a CD or a DV.
In a rental system in which contents such as music, movies and games are recorded on a digital recording medium such as D, and the digital recording medium is lent, (1) an RFID chip is placed in a place different from the content recording area of the digital recording medium. Embedding, recording the encrypted content on the recording area, recording the lending management information including the maximum number of times of use in the RFID chip and lending to the user, the lending management means of the RFID chip-equipped recording medium, (2) Each time a user who rents a recording medium equipped with an RFID chip uses it, the number of times of use is written in the RFID chip by the RFID reader / writer of the user,
A recording medium rental system equipped with an RFID chip, comprising: a means for prohibiting use when the maximum number of uses and the written number of uses become equal.

The invention described in claim 4 is a CD or DV.
In a rental system in which contents such as music, movies and games are recorded on a digital recording medium such as D, and the digital recording medium is lent, (1) an RFID chip is placed in a place different from the content recording area of the digital recording medium. , The encrypted content is recorded in the recording area, the lending management means of the RFID chip-equipped recording medium for lending to the user by recording lending management information such as the decryption key and the lending period in the RFID chip, ( 2) A user who rents the recording medium equipped with the RFID chip can reproduce and use the content within the range of the lending management information recorded in the RFID chip by using a player with an RFID reader / writer.
Lending control means that content cannot be reproduced when the content exceeds the lending management information, (3) a medium information management center that comprehensively manages the RFID chip mounted recording medium, and a rental shop affiliated with the medium information management center A recording medium rental system equipped with an RFID chip, characterized in that the medium information management center is provided with means for collectively managing information such as the decryption key and the location of the recording medium.

Using the system of the present invention, the user can
When renting a chip-mounted recording medium at a rental store, have the rental store write down the lending conditions (the lending period or the number of times of use) on the recording medium, or use an automatic lending terminal installed in the rental store. By using the RFID chip of the recording medium to write lending conditions by the user himself,
When paying out the rental fee and guarantee money according to the lending conditions and playing the content with a player with an RFID reader / writer at home, if the lending conditions are reached, the use is prohibited (decryption key disappears) and the user Allow a margin for the storage medium to be returned, set a security deposit return period in addition to the loan period, and return the storage medium at any time within that range, and if it is a rental shop affiliated with the medium information management center It can be returned to any store. In addition, if it is within the deposit return period, the deposit will be refunded to the user when returning the recording medium, or if the deposit return period has passed, the deposit will be confiscated and the recording medium will be owned by the user. You can also do so.

To extend the usage period by rewriting the lending conditions through the Internet, or to update the lending conditions through the Internet even when the range of the lending conditions is exceeded, so that the contents of the recording medium can be used. When the recording medium owned by the user has passed after the deposit return period, the recording medium is also permitted to be transferred to a third party. Through the media information management center, the decryption key can be rented or purchased without a deposit, and the recording medium can be used again.

When it is not confusing, each term may be expressed as follows. RFID chip: RFID RFID chip mounted recording medium: RFID recording medium or simply medium Information recording surface of RFID recording medium: recording surface (specifically, CD surface,
DVD surface, etc.) Encrypted information: Encrypted information or content decryption key, decryption key: Decryption key or simply key RFID reader / writer: RFID input / output device RFID reader / writer equipped player: Player

Contents such as music, movies and games are recorded on digital recording media such as CDs and DVDs displayed in rental stores. In the present invention, a recording area (recording surface) is defined as this digital recording medium. An RFID recording medium with an RFID chip embedded in another area is used. The content to be recorded on the recording surface is encrypted, and the decryption key for decrypting the content is recorded on the RFID chip. The decryption key is written in the RFID at the same time when the encrypted content is written in the recording medium, or is written at the time of lending.

In the latter case, since it is difficult to manage the key because the key corresponding to the medium has to be written, the former is usually easier as a rental business.
However, when the rental shop and the medium information management center are connected to the Internet, the keys can be easily managed and more strict information management can be performed, which is preferable in terms of information protection. The latter method can be easily performed by collectively managing the media by the media information management center.

In any case, when the medium is rented out at the rental shop, the lending management information such as the lending period is written in the RFID of the medium by the player with the RFID reader / writer. The user plays and uses the content with a player with an RFID reader / writer. The player first reads the key from the RFID and uses the key to reproduce while playing back the encrypted content recorded on the recording surface. When the rental conditions are exceeded, the key is erased and the content cannot be played.

There are the following methods for lending of the present invention. (1) A loan method with a fixed period, which is currently generally used. (2) Lending method with usage count. (3) A free lending method that collects deposit and rental fee at the time of lending.

In the case of (1), the lending method is currently used in a general rental shop, and the key is written in the RFID at the time of shipping. In this case, the role of RFID is only to prevent unauthorized use by copying the content. However,
It is also possible to write the lending conditions in the RFID and check the lending conditions with the user's player. In this case, when the lending conditions expire (for example, if the lending condition is 1
In the case of a weekly lending deadline, the content may not be played back after one week).

In the cases (2) and (3), the lending conditions are written in the RFID so that the contents of the medium cannot be used when the lending conditions are reached. For example, in the case of (2), the usage count (play count) is recorded each time the user sets the medium in the player and plays the content, and when the maximum usage count written in the rental store is exceeded, Stop playing. If the key is written out when writing the rental conditions, the key is also erased. In the case of (3), basically the user is free to return it at any time, and the return rental store is also free (it is possible to return even if it is not a rental store that borrowed the medium). However, if the return time is set indefinitely, the turnover rate of products will deteriorate.

For this reason, the current rental store basically has a maximum lending period of about one week, but according to the present invention, a long lending period such as half a month or one month is set in addition to the content expiration date. It is possible. If the loan period (lending period) is exceeded, a security deposit will be automatically collected and the medium itself will be owned by the user. For this reason, the return period of the medium is referred to as a “guarantee return period”. Of course, even if the deposit return period is not exceeded, if the lending conditions (expiration date or number of uses) set at the time of lending are exceeded, the content of the medium cannot be reproduced. If the user returns the medium within the deposit return period, the deposit will be repaid without incurring the late charge. However, if the period for returning the deposit is exceeded, the medium will belong to the user, but it will be irrational to have a medium that is no longer usable. In order to avoid this absurdity, in such a case, the user purchases the key and makes the medium permanently available. Of course, keys can be rented without a deposit.

In the case of free lending, it is assumed that the return rental shop is also free, but if it is simply free, the rental shop cannot manage the products. Currently, among chain stores, there is a form where you can rent at any store and return to any store, but
In the present invention, the medium information management center and the rental store (member store) are connected via the Internet, and the medium information management center collectively manages the medium.

If the user wishes to postpone the use of the medium,
There is also a route that allows you to change rental conditions by connecting to the media information management center online at a rental store. In the case of managing media collectively at the media information management center, the lending conditions and keys are written to the RFID when lent, and when the lending conditions are exceeded, the lending conditions in the RFID are erased and the keys are erased. . When it becomes a user-owned medium, the medium may be given to a third party. However, in order for a third party to use the content in the medium,
You must purchase or rent a key from the Media Information Management Center.

Further, according to the present invention, it is possible to lend by an automatic lending terminal connected to the medium information management center via the Internet installed in the rental shop. When using the automatic lending terminal, the user can operate the lending by himself without passing through the clerk. In this case, the user sets the medium in the case, puts the deposit and the rental fee,
By entering the lending conditions, the lending conditions and the key are written in the RFID.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described with reference to the drawings. FIG. 1 is a system configuration diagram in which the structures of a recording medium with an RFID chip and a player with an RFID reader / writer handled in the present invention are viewed from the hardware side. Player 2 with RFID reader / writer here
Works as a control device for writing lending conditions and the like in the RFID of a medium at a rental store, but as a user, it works as a player for playing / using contents.

First, the apparatus as seen from the user side will be described. The RFID chip mounted recording medium 1 has an information recording medium surface 130,
It is composed of an RFID chip 110 (RFID) and an antenna 120, and the antenna is connected to the RFID. The reach of radio waves varies depending on the length of the antenna. In the RFID recording medium rental system of the present invention, the player 2 is provided with the RFID input / output device 2
RFID input / output device 210
Like the RFID chip mounted recording medium 1, is composed of an RFID chip 211 and an antenna 212. The antenna may be built into the RFID, but due to the small chip, the antenna 12
Without 0 and 212, the distance that radio waves reach (operating distance) is about a few millimeters. Therefore, in the embodiment of the present invention, a circular antenna is externally attached so as not to affect the information recording medium surface 130. It is attached. In the embodiment of the present invention, the range of radio waves (operating distance) can be extended to 2-3 centimeters. Further, an example of specifications of the RFIDs 110 and 211 used in the present invention is given below.

[0030] RF: ISO14443-B CPU: 8bit FRAM: 32KB ROM: 32KB RAM: 1KB

RF is an abbreviation for "Radio Frequency", and the radio frequency standard is ISO14443-B. FRAM and RAM are basically the same, but the former stores lending information such as keys and lending conditions, and the latter is used as a backup. Both are read / write memories, but unlike ordinary RAM,
It is a non-volatile memory. The above memory sizes of RAM and FRAM are examples, and the memory size varies depending on the lending conditions such as the length of the key, the lending period, the number of times of use, or the number thereof. Security processing software is recorded in the ROM to prevent unauthorized access. One recording medium can contain multiple types of contents. In this case, it is also possible to rent the content unit in the recording medium.

The player 2 is provided with a head 4 (optical reading head in the case of CD or DVD) for reading encrypted information from a recording medium. The encrypted information read from the recording surface 130 is the RFID input / output device (RFID chip 211).
Decryption is performed using the key read in step 2, and the decryption is performed by the decoder 230 (IC chip with built-in decryption software).

The output destination of the information decrypted by the player 2 is a personal computer, a television or an audio device 3. That is, the result that the user sees (or hears) is the image or music output to the monitor or speaker connected to the output device.

In order for the user to receive the key (decryption key) for decrypting the encrypted content from the Internet 9, first, the controller 3 connects to the medium information management center,
Notify the information provider of the medium ID and the information ID. Based on the information, the medium information management center distributes the corresponding key on the Internet, and the user side directly transmits the key to the RFID 211 of the player 2 via the control device. The RFID 211 performs security processing on the input information (key in this case), and transmits it to the RFID 110 when there is no security problem. The RFID 110 performs security processing on the input information, and if there is no problem, writes the key in the FRAM of the RFID 110.
As a result, the user can use the content corresponding to the key.

First, the method of obtaining a key via the Internet has been described, but the basis of the present invention is the lending of a medium at a rental shop. Therefore, next, a case where FIG. 1 is viewed from a rental shop will be described. In this case, there are a method of using the Internet 9 and a method of writing the lending conditions only at the rental shop. The former case is the same as the above method,
In the latter case, you don't need to be connected to the internet. However, in the control device 3 (usually a personal computer is used), the management information of all the media (rental products) to be rented is recorded in the hard disk (not shown) connected to the control device, and the lending conditions at the time of lending are RFID recording media. At the same time as writing to RFID 110 of 1, the rental conditions will be recorded on the hard disk. When a medium is managed by the medium information management center via the Internet, since the medium information management center manages the lending conditions and the like, the rental store does not need to manage the medium information such as the lending conditions and the like.

FIG. 2 shows a rental form that is generally used at present. When the rental shop 6 independently lends the RFID chip mounted recording medium 1 on which contents such as music, video and game software are recorded. 3 is a diagram showing a flow of the RFID recording medium 1. FIG. There are three ways of lending. 1
One is to write the key in the RFID of the RFID recording medium 1 in advance,
In this method, the RFID recording medium 1 is lent out at the counter in exchange for the rental fee (650). The loan condition is a loan with a deadline such as the same day or one week, and it will be returned by the return date (561)
Is the way. Since the RFID of the recording medium is not rewritten by the player, the content of the recording medium can be reproduced even after the lending date. Therefore, if the rental is overdue, the rental shop collects the overdue charge from the user. In this case, the RFID of the recording medium serves only to prevent fraud by copying.

Another method is to use the player 62 with RFID input / output device at the rental shop 6 and the PC 6 with the RFID recording medium 1
It is a method to write the key and lending conditions on the RFID of and ask the user to pay the rental fee and the deposit. The user 5 brings back the RFID recording medium 1 in which the key and the rental conditions are written, and reproduces it on the player 52 with the RFID input / output device at home.
Use on PC5. In this case, the player 52 checks the lending conditions written in the RFID for each reproduction, and deletes the key when the lending conditions are not satisfied. That is, when the lending conditions have expired, the contents of the recording medium cannot be used at that time.

The third method is a rental method using a rental fee and a guarantee money. FIG. 3 is a diagram showing the relationship between lending conditions and guarantee money. There are two lending conditions: the rental period and the number of times of use. In either case, there is a period for returning the deposit. In the case of rental for a limited time, the content can be played and used any number of times during the rental period. However, after the rental period, the content cannot be played or used. The deposit return period is set longer than the rental period, and the deposit is returned if the recording medium is returned within the deposit return period. For example, 1
Assuming that you rented for a weekly rental period, the deposit return period is 1
In terms of months, the content cannot be played after one week, but if returned within one month, the deposit will be returned at the time of return. Of course, overdue fees will not be charged even after the rental period. In the case of rental with a number of times, the recording medium can be reproduced and used any number of times as long as the number of times of use is within the set maximum number of times of use. In the example in the figure, the maximum number of uses is n, so up to n times will be played regardless of the deadline.
It can be used. However, if the deposit return period has expired, even if the usage count remains (case 2),
The deposit will be confiscated. Of course, the recording medium becomes the property of the user in exchange for the confiscation of the deposit. If the deposit is returned, the deposit will be refunded when the recording medium is returned.

Even if the recording medium is owned by the user, it cannot be reproduced or used on the recording medium whose rental conditions have expired. If the user wants to use the recording medium forever, he / she purchases a new key at a rental store and has it written on the RFID of the recording medium.

In order to further increase the degree of freedom of the rental form, it is necessary to make the rental system using the Internet shown in FIG. Information on the recording medium is collectively managed by the medium information management center 7. Rental store 6 gives user 5 R
The form for lending the FID recording medium 1 is the same as that for lending at a single rental store, but the key and lending conditions are transmitted by the server S7 of the medium information management center 7, received by the personal computer PC6 of the rental store, and entered by the RFID. Written by the player 62 with an output device. Therefore, the key of each medium and the lending condition are collectively managed by the server of the medium information management center. In this form,
Not only is the user free to return the recording medium, but also the rental rental store can be freely selected.

However, if all of them are made free, not only the turnover ratio of the product (rental recording medium) is deteriorated, but also it becomes difficult to manage the product such as damage of the product due to long-term lending. Attach The recording medium is rented by collecting a rental fee from the user and depositing a security deposit. The security deposit is returned to the user when the recording medium is returned, but as shown in FIG. 3, the return period is within the deposit return period. If the loan condition is limited, a guarantee deposit return period longer than the rental period is provided. If the rental period is within this range, the late fee will not be collected even after the rental period, and the guarantee deposit will also be returned. In that sense, it is more free than the conventional form. Further, although it is possible to return the recording medium to any rental store other than the rental store that borrowed the recording medium, there is a limit to the range of rental stores that are members of the medium information management center. The server of the media management center keeps track of where in the store the loaned recording medium was rented, which user owned it, and when it was returned to which store.

The user rents the recording medium under the lending conditions, but if he / she wants to extend the recording medium further while borrowing, the medium information management center changes the lending condition through the Internet 9 (extends the period or updates the number of times of use). Is possible. Of course, you can extend it at a rental shop. In this case, the deposit return period is also reset (in terms of processing, the loan date is reset). Further, when the deposit return period has expired and the deposit has been confiscated and becomes a recording medium owned by the user, a route through which the user can purchase a key is prepared for the recording medium. The place of purchase may be a medium information management center or a rental store (however, a member store <store connected to the medium information management center via the Internet>).

When purchasing from the medium information management center 7, the key is transmitted from the server S7 and the receiving device PC of the user.
It is received at 5, and is written in the RFID of the RFID recording medium 1 by the player 52 with the RFID input / output device. Players with RFID input / output device from the rental store when purchasing from the rental store 6
The RFID recording medium 1 of the user is set in 62, the personal computer PC6 receives the key transmitted from the server S7, and the player 62 with the RFID input / output device writes the key in the RFID of the recording medium. The recording medium from which the key was purchased can be used permanently. Of course, it is possible to purchase a key with a condition (rental form). For example, the key can be purchased (key rental) under the condition that the key can be used 10 times, which is cheaper than the case of purchasing a permanent key. Unlike in the case of normal rental, in this case, since the recording medium is already owned by the user, it is not necessary to deposit the deposit at the rental store or the medium information management center. It is also possible to transfer the recording medium to a third party.

Lending is available with a term and by the number of uses. This lending form is written in the RFID as lending conditions. Figure 5 shows the case of a loan with a term and the case of a loan with the number of times of use.
It is an example showing the contents written in the RFID. The writing location may be RFID FRAM or RAM. In either case, it is a writable nonvolatile memory. It is also assumed that a loan and rental fee will be collected at the time of loan, and the loan will be refunded to the user if it is returned within the bond return period.

In the case of lending with a period, as shown in the figure, the owner identifier W (= 0), the decryption key K, the deposit return period Dmx, the lending date Ds, and the lending period Dr are written in the RFID at the time of lending. For example, Dmx = 30 days, Ds = yyyy year mm month dd
If the loan is made on the day, Dr = 7 days, 1 from the loan date
After a week, the player deletes the key K and the content cannot be played or used. However, there is 30 days to return the medium, and if you return the recording medium within 30 days, the deposit will be returned. After the deposit return period, the deposit will not be returned even if the recording medium is returned,
The recording medium belongs to the user. At this time, the owner identifier W is rewritten to "1".

In the case of lending with the number of times of use, the owner identifier W (= 0), the decryption key K, and the deposit return period D at the time of lending
mx, loan date Ds, maximum number of uses Nmx, number of uses N
Write (= 0) to RFID. The number of times of use N is incremented by 1 each time the user plays the content of the recording medium with the player, and when N ≧ Nmx, the key K is erased by the player, and the content of the recording medium can be played and used. Disappear. When N <Nmx, the content can be reproduced even if the deposit return period Dmx is exceeded. However, even if the recording medium is returned after passing Dmx, the deposit is not returned. Instead, the recording medium is owned by the user, and the owner identifier W is rewritten to "1".

The user can apply for extended use from the media information management center via the Internet. Even if W = 0 (for rental) at the time of applying for extension or W = 1 (ownership), no deposit is required for extension. When the extension process is performed, if W = 0, the lending date Ds is rewritten with the date of extension. That is, the newly rewritten Ds to Dmx
If you return the recording medium to the rental store during the period, the deposit will be returned. In the case of private ownership, the key can be purchased, in which case the recording medium can be used permanently.

By writing the key in the RFID, it is possible to prevent the illegal use by copying the contents, but it is possible to buy the illegally obtained recording medium such as shoplifting from the medium information management center on the Internet. There is no point in key management. This contradiction has been resolved by the central management of media at the media information management center. This is because whether the recording medium is in the user or in the rental store is managed by the medium ID. Therefore, when the user makes a purchase request for the key for the recording medium that should be in the rental store, , Because it can be determined that the recording medium is illegally owned by the user. Further, in order to obtain the confirmation of the illegal possession, the owner identifier is set to "-1" when it is displayed at the rental shop. That is, it is possible to make the following determination based on the owner identifier W. W = 0: Owned by rental store (write 0 when rented) W = 1: Owned by personality (write 1 when confiscating deposit at rental store) W = -1: Under display (Write -1 when user returns) )

If the owner identifier is defined in this way, if the user makes a postponement application or key purchase application directly to the media information management center, the server reads W and W = -1. Sometimes it is determined that the recording medium is fraudulently owned (medium obtained without going through the window of the rental store due to shoplifting etc.), the server refuses the application, and the medium information management center investigates the source of the medium etc. To do.

It is possible to record a plurality of contents on one recording medium and rent them in units of contents. In this case, as shown in FIG. 6, a plurality of contents C1, C2, ... Cj on the information recording medium surface 130 of the RFID recording medium 1 are recorded, and management of each content is performed by managing the content IDj of the header H and the content. Use the pointer Pj. The key Kj and the lending condition CDj are written in the RFID 110 for each lending content IDj. However, the owner identifier W and the deposit return period Dmx are managed for each recording medium. In the case of n contents 1 medium, the contents are lent out, but the management of the other recording media is the same as the case of 1 contents 1 medium.

[0051]

Industrial Applicability The present invention is a rental system that prevents unauthorized use of information by copying and enables protection management of information by using a recording medium equipped with a FRID chip. Because the information is encrypted and recorded on the recording medium,
This is because the decryption key (decryption key) is recorded on the RFID chip, so even if the encrypted information on the recording medium can be copied, the key cannot be copied.

Although the present invention can be applied to a conventional rental form, the medium information management center can collectively and uniformly manage the recording medium by connecting the rental store and the medium information management center via the Internet. . As a result, the user can borrow the recording medium with a high degree of freedom and can use it as a convenient rental system. In the latter case (net management), you have to pay a deposit in addition to the rental fee, but if you return it within the deposit return period, the deposit will be returned, so it can be used as a deposit for the next rental. Moreover, since the deposit is about the recording media plus alpha, there is no burden of buying the product itself.

If the deposit return period has expired, the deposit will be confiscated, but the recording medium itself will be
Moreover, if a key is purchased from a medium information management center through a rental shop or the Internet, the recording medium can be used as a personal item forever, and the key can be borrowed in a rental form without a deposit. Therefore, unlike the past, there is no need to incur an extraordinary late charge due to forgetting to return the item. The return period is essentially the period for returning the deposit, and it is possible to return with a margin. Even if the deposit is confiscated, you can effectively use the recording medium as your own,
There is no absurdity that the deposit is a loss.

On the other hand, for a rental store, it is possible to prevent the rented product from being returned or the loss of the product due to shoplifting. This is because the rented recording media will be unavailable when the lending conditions are no longer met, and the user will have no choice but to return the product for the purpose of returning the deposit. .
Even if the product is not returned, there is no loss of the product because the deposit is held down. Shoplifted products cannot be used because the key has not been written on them, meaning that shoplifting has become less meaningful and helps prevent shoplifting.

[Brief description of drawings]

FIG. 1 is a hardware configuration diagram focusing on an RFID chip-equipped recording medium used in an RFID chip-equipped recording medium rental system of the present invention and a player with an RFID reader / writer.

FIG. 2 is a system configuration diagram for explaining a mode in which the rental medium is rented by a rental shop alone (loan that is not netted) in the RFID chip-mounted recording medium rental system of the present invention.

FIG. 3 is a diagram for explaining the relationship between the deposit return period and the lending conditions in the RFID chip mounted recording medium rental system of the present invention.

FIG. 4 is a system configuration diagram of a relationship between a medium information management center, a rental store, and a user in a recording medium rental system equipped with an RFID chip according to the present invention, viewed from the flow of recording medium and information.

FIG. 5 is a data format diagram for explaining the contents recorded in the RFID in order to manage the information of the RFID chip mounted recording medium in the present invention (in the case of one content and one medium).

FIG. 6 is a data format diagram for explaining the contents recorded on the recording surface and the RFID for managing information of the RFID chip mounted recording medium in the present invention (in the case of n contents 1 medium).

[Explanation of symbols]

1 RFID chip mounted recording medium (RFID recording medium: C
(D, DVD, etc.) 110 RFID chip 120 Antenna (tag) 130 Information recording medium surface (recording surface) 2 RFID reader / writer player (RF
210 Player with ID input / output device) 210 RFID reader / writer (RFID input / output device) 211 RFID chip 212 Antenna (tag) 230 Decoder (hardware decryption software) 3, control device such as PC personal computer 4 Head 5 use Person 52 Player with RFID input / output device 561 Return of recording medium (to rental store) 570 Request for extension of loan period or purchase of key (to media information versus management center) PC5 PC, TV, audio device, etc. However, when using the Internet Is a device that can be connected to the internet 6 Rental shop 62 Player with RFID input / output device 650 Recording medium lending (to user) 670 Key transmission request at lending (to information management center) PC 6 PC 7 Medium information management center 750 Key or lending Send and record conditions Write to body (to user) 760 Send key or lending condition and write to recording medium (to store) S7 server 9 Internet Cn contents H, Hn header Pn pointer (start address where encrypted information is recorded ) IDn information identifier (information ID, content ID) K, Kn key (decryption key, decryption key) CDj lending condition (lending period or number of times of use) medium ID medium identifier W owner identifier Dmx guarantee return period Ds lending date Dr Lending period Nmx Maximum number of uses N Number of uses

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G11B 27/00 G06K 19/00 Q H04L 9/10 H (72) Inventor Mitsuru Iwamura Nakamura, Nerima-ku, Tokyo 2 −14−17 F term (reference) 5B035 BB09 BC00 CA23 5B058 CA15 YA20 5D044 AB05 AB07 BC03 CC06 DE17 DE50 EF05 GK17 HL08 5D110 AA14 BB02 DA04 DA11 DA14 DB08 DE01 EA07 5J104 NA27 PA10 PA14

Claims (4)

[Claims] 1. A rental system in which contents such as music, movies and games are recorded on a digital recording medium such as a CD or a DVD, and the digital recording medium is lent, (1) A content recording area of the digital recording medium Is embedded with an RFID chip in another location, the encrypted content is recorded in the recording area, the RFID chip is recorded with the lending management information such as the decryption key and the lending period, and the RFID chip mounted record is lent to the user. Media lending management means (2) The user who borrowed the RFID chip mounted recording medium
The RFID using a player with a D reader / writer
It is characterized in that it has a lending control means capable of reproducing and using the content within the range of the lending management information recorded on the chip, and not being able to reproduce the content when exceeding the range of the lending management information. Recording media rental system with RFID chip. 2. A rental system in which contents such as music, movies, games, etc. are recorded on a digital recording medium such as a CD or a DVD, and the digital recording medium is lent, (1) a content recording area of the digital recording medium Is an RFID chip embedded in another location, the encrypted content is recorded in the recording area, the lending management information including the lending period is recorded in the RFID chip, and the RFID is lent to the user.
Lending management means for chip-mounted recording medium (2) The user who borrowed the RFID chip-mounted recording medium
The RFID using a player with a D reader / writer
RFID chip-equipped record, which is equipped with a lending control means that allows the content to be played back and used within the range of the lending deadline recorded on the chip, and that the content cannot be played when the lending deadline is exceeded. Media rental system. 3. A rental system in which contents such as music, movies and games are recorded on a digital recording medium such as a CD or a DVD, and the digital recording medium is lent, (1) a content recording area of the digital recording medium Embeds an RFID chip in another location, records encrypted content in the recording area, records lending management information including the maximum number of times of use in the RFID chip, and lends it to the user.
Lending management means for a recording medium equipped with an RFID chip (2) Each time a user who borrows the recording medium equipped with an RFID chip uses it, an RFID reader / writer for the user
A recording medium rental system equipped with an RFID chip, comprising: means for prohibiting use when the number of times of use is written in the RFID chip and the maximum number of uses and the written number of uses become equal. 4. A rental system in which contents such as music, movies and games are recorded on a digital recording medium such as a CD or a DVD, and the digital recording medium is lent, (1) a content recording area of the digital recording medium Is embedded with an RFID chip in another location, the encrypted content is recorded in the recording area, the RFID chip is recorded with the lending management information such as the decryption key and the lending period, and the RFID chip mounted record is lent to the user. Media lending management means (2) The user who borrowed the RFID chip mounted recording medium
The RFID using a player with a D reader / writer
Lending control means that content can be played and used within the range of lending management information recorded on the chip, and content cannot be played back when it exceeds the range of lending management information (3) RFID chip mounted record A medium information management center that comprehensively manages the medium and a rental store affiliated with the medium information management center are connected via the Internet, and the medium information management center collectively manages the decryption key and the location information of the recording medium. A recording medium rental system equipped with an RFID chip, which is provided with a means for performing.