[0O28}The data distribution method according to claim 3 constitutes the above-
`mentioned user recording medium from a magneto-optical disc in the above-
`mentioned invention.
`
`[O029]Since it will write in the existing personal computer by built—in or a Magnetic-
`Optical disk drive by which external was carried out and reading will be possible if a
`user recording medium is constituted from a magneto—optical disc, special-purpose
`machines, such as a card reader, are not needed, but a data distribution system can be
`constituted cheaply.
`[O030]The data distribution method according to claim 4 is provided with the
`following.
`A communication system which distributes data to a user from an information
`provider according to a user's demand.
`A main data field which records software which a user demands among data
`distributed by information provider according to a communication system.
`A rewritable user recording medium provided with an attached data field which
`records attached data relevant to the above-mentioned software containing data and
`
`billing data peculiar to a user.
`A means to permit rewriting from an information provider to attached data recorded
`on a recording device by the side of an information provider who records the same
`data as attached data recorded on an attached data field of a user recording medium,
`and an information provider's recording device, and to regulate rewriting from a user.
`
`[003 1 ]Attached data which furthermore corresponds to user proper data of a user
`recording medium is searched from an information provider's recording device, A
`collation means which compares attached data of an information provider's recording
`device, and attached data of a user recording medium, continues message distribution
`processing of software when it agrees, and stops message distribution processing of
`software when not agreeing, When message distribution processing of software is
`continued by collated result of a collation means, after carrying out accounting
`according to software distributed, While making software distributed to a user from
`an information provider record on a main data field of a user recording medium, it has
`a means on which attached data which contains billing data in an attached data field
`of a user recording medium and a recording device by the side of an information
`provider is made to record.
`[003 2]Since rewriting from a user is regulated as for attached data recorded on a
`recording device by the side of an information provider, even if a user can change
`attached data of a user recording medium unjustly, the user cannot change attached
`data of a recording device by the side of an information provider. Therefore, even if a
`~ user recording medium is rewritable, a user recording medium cannot be used,
`rewriting it unjustly. With an easy structure which records attached data recorded on
`an attached data field of a user recording medium, and data of an identical content on
`a recording device by the side of an information provider, even if it uses a rewritable
`user recording medium, an unauthorized use of a user recording medium by forgery or
`alteration can be prevented.
`[0033]
`[Embodiment of the Invention]The embodiment which applied the data distribution
`method and device of this invention to game software sale distributed through a
`communication system by the software distribution contractor who is an information
`provider is described below.
`
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`
`[0034]A system configuration figure book system is faced distributing game software
`to the user who came to the store in the store from the distribution contractor who
`
`distributes the software which is an information provider, Do not stop to record game
`software but the contents of purchase and billing data of game software are also
`recorded on the removable user recording medium set to the computer of a store, The
`contents of purchase and billing data are recorded also on the computer of the
`distribution contractor who distributes software using a communication system. The
`past record and the record of a user recording medium which are recorded on the
`distribution contractor's computer are compared, and an unauthorized use is
`prevented.
`[0035]Drawing 1 is a block diagram of a software selling system. The software
`distribution contractors 1, 2, and 3 distribute the main data about games, such as
`added value data for controlling or extending operation of a respectively original
`software program, image data, voice data, and other machinery. A contractor's
`original main data is distributed to the computer 24 of the store 4 via the
`communication systems 6, 8, and 10 from which the cable which uses an ordinary
`public circuit, CATV, etc., the radio which uses optical communications, a sound
`wave, satellite broadcasting, etc., etc. get down from the software distribution
`contractors 1 and 2 and the computers 21, 22, and 23 in three. When the data volume
`to distribute becomes splenium etc. dramatically at this time, recording media, such as
`CD-ROM, may be used, it may deliver at the direct-sales store 4, and you may also
`write in the computer 24 of a store. Since the computers 21, 22, and 23 have managed
`uniquely the data recorded on these, even if it carries out direct access of them
`through a network from a user, it is impossible substantially to alter the above-
`mentioned data or to download. A secret database respectively original with the
`computers 21-23 is built, and those databases are matched with the write-in
`equipment item number item of the computer 24 of the store 4, and, specifically,
`cannot be accessed from other than store 4 registered.
`[0036]Here, only the communication function which communicates among the
`contractors’ 1-3 computers 21-23 is given to the computer 24 of the store 4. The
`computer 24 of the store 4 is installed in the inside of a shop and shop front of stores,
`such as the place in which users gather easily, for example, a convenience store etc.,
`and is installed in the store doubled with the contents of the software to sell.
`
`[OO37]. [ whether the user 15 purchases the rewritable user recording medium 13 in
`the store 4, and ] Or a communication interface is carried out to the computers 21-23
`in the contractor 1-3 of the distribution origin which carried the already purchased
`general-purpose user recording medium 13 into the store 4 (numerals l 1), and
`specified game software to purchase using the computer 24 of the store 4. Data
`communications are performed between the computers 21-23 in a contractor, and the
`store computer 24, and the game software of the request distributed by the contractors
`1-3 is written in the user recording medium 13. A user brings home the user recording
`medium 13 with which game software was written in (numerals 12), will equip a
`game main part as it is, and will play. If a user gets bored with a game within the
`limits of the amount of money which remains in the user recording medium 13, game
`software can be rewritten any number of times with a described method. The above-
`mentioned user recording medium 13 is made into the magneto-optical disc which has
`spread most.
`[0038]As shown in drawing 2, the storage area Z of the user recording medium 13
`comprises the rewriting fields Z1, such as software and data, the individual data field
`Z2, and the billing data field Z3. The main data field of this invention is constituted
`
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`
`from the rewriting field Z1, and an attached data field consists of the individual data
`field Z2 and the billing data field Z3. the communication for which the user used the
`game machine which it is going to acquire from a distribution contractor, and the
`‘personal computer -- a game —— although the data of a game or image data, music data,
`etc. rewrites and it is written in the field Z1, the other information is written in the
`individual data field Z2 and the billing data field Z3 as attached data. An individual
`data field is equivalent to a merchandise management ledger here, and a billing data
`field is equivalent to a passbook.
`[003 9]In order that a user may purchase software, when the user recording medium 13
`is set to the write-in machine 25 of the store computer 24, the store computer 24,
`While writing the game software distributed by the distribution contractors 1-3 in the
`rewriting field Z1 of the user recording medium 13, attached data is written in the
`individual data field Z2 and the billing data field Z3. At the same time it performs the
`writing to this user recording medium 13, It sends also to the computers 21-23 of the
`contractors 1-3 who distribute software via the communication systems 5, 7, and 9 of
`going up of the same data as the individual data and billing data which were written in
`in the user recording medium 13 from the store computer 24, The individual data and
`billing data of an identical content are recorded on the contractor computers 21-23
`concerned.
`[0040]The distribution contractors 1-3 subtract and do settlement processing of the
`amount of money of distribution software from the balance in billing data with
`reference to the billing data of the user's 15 user recording medium 13. Other
`settlement processings, such as addition and collation, are performed also with
`reference to individual data.
`[0041 ]The accounting system of the above-mentioned communication system can be
`used in the cases, such as distribution of added value data to many and unspecified
`users on satellite broadcasting or the Internet etc. The recording device by the side of
`the information provider of this invention, a means to regulate, a collation means, and
`the means made to record comprise the computers 21-23 by the side of an information
`provider.
`[OO42]The individual data and billing data (1) individual data drawing 3 which are
`recorded on a user recording medium are the example of a data format which assigned
`the part in the storage area Z of the user recording medium 13 which the user 15 can
`rewrite as the individual data field Z2, and memorized individual data.
`[0043]As an individual data field data format, number A5 of the name A1 of purchase
`software, the amount of money A2 of purchase software, purchased store A3,
`purchased time A4, and the write-in machine which consists of computers shall be 1
`block. Whenever it purchases software, it adds in 1 block (B1 - B5) and a unit (C1-
`C5). Accumulation record is carried out without updating the past individual data by
`this. Expansion is possible for the data format of these individual data field by
`defining specification according to the purpose.
`[O044]** As individual data of A1 to A5 at the time of purchasing "the strongest
`shogi 1997" for 5,800 yen in a ZAKOMBINI Kamata store at example of individual
`data 16:25 on April 10, 1997, In the field A1, as a name of the purchased software,
`"the strongest shogi 1997", "5800" which simplified 5,800 yen as the amount of
`money of the purchased software to A2, To A3, the write—in equipment item number
`item "00O02537" of the store which purchased "9704101625" which simplified the
`time (16:25 on April 10, 1997) which purchased the "ZAKOMBINI Kamata store" to
`A4 as a name of the purchased store to A5 is memorized, respectively.
`
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`

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`[0045]** As individual data of B1 to B5 at the time of purchasing "best golf Nagano
`Prefecture" for 4,900 yen in the MARUDAI department store Shinjuku store at 11:38
`on May 5, 1997, In the field B1, as a purchased soft name, "best golf Nagano
`Prefecture", "4900" which simplified 4,900 yen as a purchased soft amount of money
`to B-2, To B3, the number "0000027l " of the write-in machine of the store which
`purchased "970505l 138" which simplified the time (11:38 on May 5, 1997) which
`purchased the "MARUDAI department store Shinjuku store" to B4 as a name of the
`purchased store (store) in B5 is memorized, respectively.
`[O046]** As individual data of C1 to C5 at the time of purchasing "the mah-jongg
`reach of one shot" for 5,500 yen in a 4 ** department store Shibuya store at 21 :57 on
`June 20, 1997, "5500" which simplified 5,500 yen as a purchased soft name in the
`field C1 as a soft amount of money which purchased "the mah-jongg reach of one
`shot" to C2, "9706202l 57" which simplified the time (21:57 on June 20, 1997) which
`purchased "4 ** department store Shibuya store" to C4 as a name of the purchased
`store is remembered C3 to be a number "00005963" of the write—in machine of the
`
`purchased store to C5, respectively.
`[0047](2) Billing data drawing 4 is the example of use which assigned the part in the
`storage area Z of the user recording medium 13 which the user 15 can rewrite as the
`billing data field Z3, and memorized billing data.
`[0048]As a billing data field data format, billing data and amount~of—money billing
`data are included. Billing data is a user's proper data and consists of a buyer's user ID
`D1, the password D2, the date of birth D3, and the sex D4. Amount-of-money billing
`data consists of the fee collection time E1, the amount E2 of payment, the amount
`contributed E3, the balance E4, and the fee collection store E5. Whenever the amount-
`of-money billing data E1-E5 shall be 1 block and it carries out cash receipt and
`disbursement, it adds in 1 block (F1-F5), (G1—G5), and a unit (H1—H5). Accumulation
`record is carried out without updating the past individual data by this. Expansion is
`possible also for the data format of these billing data field by defining specification
`according to the purpose.
`[0049]** Register "ST781249" into the example field D1 of billing data as a buyer's
`user ID number. This is peculiar ID provided in the owner individual. The password
`"7298" determined by the intention of the person himself/herself as a password is
`registered into the field D2. When it is a buyer's date of birth, for example, February
`23, Showa 34, "1959.2.23" changed to A.D. is registered into the field D3. As a
`buyer's sex, in the case of a male, "0" is registered, and, in the case of a woman, "1" is
`registered into the field D4.
`[O050]** As billing data of E1 to E5 at the time of purchasing the charge amount of
`20,000 yen in a ZAKOMBINI Kamata store at 16:20 on April 10, 1997 (payment),
`"9704101620" which simplified time 16:20 on April 10, 1997 of the fee collection to
`E1, To E2, "20000" which simplified 20,000 yen for "0" which simplified 0 yen for
`"20000" which simplified amount of payment 20,000 yen as the amount contributed
`to E3 as the balance to E4 is memorized, respectively.
`[0051]** As billing data of F5, from F1 at the time of purchasing 5,800 yen software
`in a ZAKOMBINI Kamata store at 16:25 on April 10, 1997, To F1, "9704l 01625"
`which simplified time 16:25 on April 10, 1997 of fee collection, To F2, "l4200"
`which simplified E4+F2—F3=14,200 yen for "5800" which simplified 5,800 yen of
`software wafer purchased amount for "0" which simplified 0 yen as the amount of
`payment as the amount contributed to E3 as the balance after purchase to F4 is
`memorized, respectively.
`
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`
`[0052]** As billing data of G1 to G5 at the time of purchasing 4,900 yen software in
`the MARUDAI department store Shinjuku store at 11:38 on May 5, 1997,
`"97051138" which simplified time 11:38 on May 5, 1997 ofthe fee collection to G1,
`To G2, "9300" which simplified F4+G2-G3=9,300 yen for "4900" which simplified
`4,900 yen of software purchased amount for "0" which simplified 0 yen as the amount
`of payment as the amount contributed to G3 as the balance after purchase to G4 is
`memorized, respectively.
`A
`[0053]** As billing data of H1 to H5 at the time of purchasing 5,500 yen software in
`a 4 ** department store Shibuya store at 21 :57 on June 20, 1997, "9706202157"
`which simplified time 21:57 on June 20, 1997 of the fee collection to H1, To H2,
`"3800" which simplified G4+H2-H3=3,800 yen for "5500" which carried out simple [
`of the 5,500 yen of software purchased amount] for "0" which simplified 0 yen as the
`amount of payment to H3 as the amount contributed as the balance after purchasing
`H4 is memorized, respectively.
`[0054]Whi1e distributing software using the communication systems 5-10 which
`connect between the computer 24 installed in a data flow store, and the computer 21-
`23 installed in the distribution contractors 1-3, the data containing cash data is
`exchanged. Processing is continued, if the distribution contractors 1-3 compare with
`the past record and agree about the data sent from a software purchaser's user
`recording medium 13, if they do not agree, they will stop processing, and they take an
`appropriate measure.
`[0O55](1) When writing attached data in the attached data field Z2 of the user
`recording medium 13, and Z3 regularly via the structure store 4 of forged discovery,
`the attached data of an identical content is written also in the computers 21-23
`simultaneously installed in the distribution contractor 1-3 side. Therefore, the billing
`data of all the users’ registered user recording medium 13 is recorded on the software
`distribution contractors’ 1-3 computers 21-23. As long as there is no unjust writing to
`the user recording medium 13, the contents of the attached data of the user recording
`medium 13 and the computers 21-23 are in agreement.
`[0056]Now, as shown in drawing 5, at Step 101 from the ID number of the billing
`data in the user recording medium 13. The billing data which corresponds to an ID
`number from the billing data in the software distribution contractors’ 1-3 computer
`21 -23 is searched, and collation with the billing data currently recorded on the user
`recording medium 13 is performed. As a result of comparing at Step 102, when data
`agrees, it progresses to Step 103, and it is judged that billing data is normal, and it
`shifts to message distribution processing including accounting. When data does not
`agree, it progresses to Step 104, and it is judged that billing data is unusual, and
`message distribution processing is stopped. When required, the user recording
`medium 13 is compulsorily discharged from the write-in machine of the store
`computer 24, or the distribution contractors 1-3 specify the unauthorized use person
`of the user recording medium 13, and take an appropriate measure.
`[0057](2) If the flow right collated result after collation comes out, the software
`distribution contractors 1-3 will distribute to a store the game software for which a
`user asks using a network. When it is caught in the age limit with reference to the date
`of birth (D3) (drawing 4) in billing data at this time in the case of game software
`which has the age limit in a distribution layer, it regulates and distribution is stopped.
`A message to that effect may be made to output from the computer 24 if needed.
`[O058]The game software which received distribution is recorded on the rewriting
`field Z1 in the user recording medium 13 by computer 24 of the store 4. The required
`data mentioned above to the individual data field Z2 and the billing data field Z3 of
`
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`
`the user recording medium 13 is recorded. At this time, the same data is recorded also
`on the individual data field Z2 and the billing data field Z3 of the computers 21-23 of
`the software distribution contractors 1-3 via the communication systems 5, 7, and 9.
`[O059]Thus, he is trying for this embodiment to memorize the same attached data
`recorded on the computer of the software distribution contractor who cannot carry out
`direct access from a user by the user recording medium. For this reason, by collation
`with the attached data by the side of a user, and the attached data by the side of an
`information provider, since forgery of a user recording medium, and an alteration and
`also double use of data can also be checked, even if it is a medium which can rewrite
`a recording medium, it is strong to forgery and reliability can be improved.
`[0060]In a store, a special-purpose machine like a card reader is not needed, but since
`the existing personal computer equipped with a Magnetic—Optical disk drive can be
`used, a system can be built cheaply. Since capacity is large, unlike an IC card,
`especially the magneto—optical disc can record mass game software without
`restrictions. As long as the balance allows, rewriting of game software can be
`performed any number of times. Since a contract like a credit card which is
`troublesome and time requires is not needed when purchasing a magneto—optical disc,
`a user's expansion can be aimed at. And since software and attached data were written
`in the magneto-optical disc of one sheet, game software and the card for soft purchase
`can be purchased simultaneously, and it becomes very convenient for a user as
`compared with the case where it purchases separately.
`[O061]Since attached data, such as individual data recorded on the user recording
`medium, is recorded also on a software distribution contractor's computer, unlike a
`credit card, it can perform sale/sales management of software, and can also grasp a
`sales situation in real time. This system is cheaper than introducing a POS terminal,
`and, moreover, can build POS and a peer system.
`[OO62]Unlike a prepaid card, a user recording medium is rewritable, and since the
`attached data field which can be re-filled up there with attached data was provided, it
`is [ usually only being subtracted and ], but it can also add. For example, it becomes
`possible to add a use right to the existing attached data as attached data in a user
`recording medium by transfer from [ from the contractor who has distributed software
`] the gratitude of a questionnaire, the prize by a lottery, or others. Thus, the side which
`provides information can add the right of use of the service to a user freely.
`[O063]Since the same user recording medium can be used for it any number of times
`if cash data is written in even if a user recording medium exhausts the cash data in a
`user recording medium, it can aim at effective use of resources.
`[OO64]And since the attached data written in as attached data in the user recording
`medium was used compared with the thing of the conventional system which limited
`the request for a utilization charge to the person who possesses the credit card, the
`frame of a credit can be removed. Thus, as an accounting system involved in
`communication, attached data can be referred to safely and simply in addition to a
`credit card and a prepaid card. Since attached data is added by a block unit, and it
`leaves all past payment records and was made not to update a data content except for
`the balance in particular, even if data is altered, the alteration of data, etc. can be
`easily discovered by comparing with the past record.
`[O065]Although billing data was compared in the above-mentioned embodiment, it
`may be made to compare about all the attached data. It compares by a software
`distribution contractor's computer, and the injustice in the store was prevented, and if
`there is no such fear, it is also possible to give a verification function to a store. For
`example, the billing data of all the users’ user recording medium 13 registered into the
`
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`
`computer 24 of the store 4 is recorded. The billing data which corresponds to an ID
`number from the billing data in the computer 24 of the store 4 is searched, and it is
`made to perform collation with the billing data currently recorded on the user
`recording medium 13 from the ID number of the billing data in the user recording
`medium 13.
`
`[0066]Although the network is introduced supposing large—scale-izing, it is possible
`to also build the small—scale system not using a network.
`[0067]As a rewritable user recording medium, a game cassette, a floppy disk, There is
`a magnetic disk, a magneto-optical disc (MO), an optical disc, a removable hard disk
`(what is called zip, j az, and PD is included), or a mass IC memory card expected in
`the future.
`
`[0068]** sale The software to carry out and the thing of time fee collection by the
`contents of ** added value data, ** the thing of the fee collection by the quantity of
`added value data, and ** -- the thing of the fee collection by the quality of added
`value data, etc. are synthetic at one stem again also to that from which a fee collection
`standard is different -— it is simply and safely manageable. Attached data may be
`enciphered in order to raise security.
`[0O69]Although the record section of a user recording medium is divided into an
`individual data field and a billing data field and it was made to overlap some data in
`the above-mentioned embodiment, it collects as a data addition field and may be made
`to avoid the duplication of data. As for the software to distribute, it is needless to say
`that it is not limited to game software.
`
`DETAILED DESCRIPTION
`
`[Detailed Description of the Invention]
`[0001]
`[Field of the Invention]This invention relates to what starts a data distribution method
`and a device, especially performs distribution and fee collection of data
`simultaneously using a rewritable recording medium.
`[0002]
`[Description of the Prior Art]As a typical card used instead of cash, there are a
`prepaid card, a credit card, and an IC card.
`[0003]A prepaid card is a kind of coupon ticket which wrote in required information
`using magnetism instead of ink.
`It is the structure it will become impossible to use if only the part of the purchased
`amount currently recorded on the magnetic card can be used and it has used.
`For example, there are a pachinko card, a telephone card, an IO card, etc. The actual
`condition is that there is no effective measure to an unauthorized use.
`
`[0004]A credit card can be used by the member's store which deals with this card,
`carries out fixed time postponement of the payment and payment of a commodity
`price, and settles a commodity price by automatic accounts transfer from a bank
`account. Authorization is needed in order to prevent an unauthorized use. The
`charging method of a system utilization charge for added value data and various
`control data to come to hand using a wired telephone line, a radio telephone network,
`satellite broadcasting, etc. has the common settlement of accounts by this credit card.
`[0005]An IC card provides the memory part and microprocessor part which are
`memory storage in IC, and gives logical processing capabilities, such as data creation
`and judgment, to the card itself. Electronic money etc. hit this. By IC embedded on
`the card, the check function of truth or falsehood and the rewritable memory storage
`
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`
`function which stores the transmitted electronic money data occur. Since a rewritable
`memory storage function occurs, an IC card can also be made to pay also from other
`than a user.
`
`[0006]
`[Problem(s) to be Solved by the Invention]However, when it was going to distribute
`software using these cards, the following problems were among the conventional card
`systems mentioned above.
`[0007](l) Since the prepaid car ** user's individual data was not being interlocked
`with a management computer, it is weak to forgery of the prepaid card itself. It is
`well-known that forgery is actually actualizing with the pachinko card.
`[0008]** Since readers, such as a card reader for exclusive use, are required,
`miniaturization, power-saving, and low-pricing cannot be performed.
`[0009]** When the cash data or frequency data in a card is exhausted, it becomes
`impossible to reuse, since it cannot be re—filled up with data.
`[0010]** When purchasing software with the software vending machine currently
`installed in the form of the vending machine, communication -- a game -- when
`purchasing the communication use type software which acquires picture information
`and music information using a game or communication, it is necessary to purchase a
`prepaid card separately from those software, it sees from a user, and is dramatically
`inconvenient.
`
`[001 l](2) Since a credit card ** user will be limited to the possessor of a credit card,
`it becomes an obstacle in respect of a user's expansion.
`[O012]** For the Reasons of it being troublesome and being, the contract of the credit
`card has been an obstacle in a user's expansion.
`[001 3]** The communication system of a wire telephone network or a radio
`telephone network is used for the sales situation of software, and since there is no
`function which communicates with the computer of the contractor who distributes
`software, sale/sales management cannot be performed.
`[00l4](3) Since the IC card IC card has given logical processing capabilities, such as
`data creation and judgment, there is no fault like the prepaid card and credit card
`which were mentioned above. However, there is a problem the following point.
`[001 5]** Since much data of versatility, such as personal data, which needs to be kept
`secret is contained, in order to secure security, need advanced encoding technology
`
`and anti-copying art.
`[0016]** A system becomes very large-scale, and also the structure of an IC card also
`becomes complicated.
`[0017]** Since the storage capacity is small, it is difficult to make a mass program
`like game software record.
`[0018]** It is still difficult to realize simply and cheaply by the experimental stage.
`[00l9]It is (l) as it mentioned above especially, although distribution of software was
`already begun through the network in the game industry. In the method of — (3), the
`software distributed by the distribution contractor using cash data cannot be
`distributed simply and safely.
`[0020]In the data distribution art in which SUBJECT of this invention distributes
`software to a user from an information provider according to a user's demand, It is in
`providing the data distribution method and device which can be distributed simply
`and safely, canceling the problem of the conventional technology mentioned above
`and using a rewritable recording medium.
`[0021]
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`
`[Means for Solving the Problemlln a data distribution method with which software is
`distributed to a user from an information provider according to a user's demand as for
`the data distribution method according to claim 1, A rewritable user recording
`medium with which attached data relevant to the above-mentioned software
`
`containing data and billing data peculiar to a user is recorded is used, Attached data
`applicable to user proper data of a user recording medium is searched from an
`information provider's computer, Attached data memorized by an information
`provider's computer and attached data memorized by user recording medium are
`compared, When attached data does not agree, stop message distribution processing,
`and message distribution processing including accounting to software which a user
`demands when attached data agrees is performed, While recording attached data about
`software distributed to a user by this message distribution processing from an
`information provider, and the above-mentioned software containing billing data which
`carried out [ above-mentioned ] accounting on a user recording medium, From a user,
`the above-mentioned attached data is recorded also on an information provider's
`computer by which data management is carried out so that direct access cannot be
`carried out.
`
`[OO22]When a cause of the forged problem of a prepaid card does not manage any
`billing data (usable frequency) in a prepaid card but fee collection (usable frequency)
`in a prepaid card is only set to 0, it is having stopped at a point recognized that the
`prepaid card is used. It is made for this invention to discover a forged rewritable
`recording medium at the time of use by managing attached data as the technique of
`solving this SUBJECT, rather than preventing forgery.
`[OO23]According to this invention, when regular attached data is recorded on a user
`recording medium which a user can rewrite, attached data of an identical content is
`simultaneously recorded also on an information provider's computer.» Therefore, when
`data is unjustly written in a user recording medium or a user recording medium is
`forged regardless of an information provider's computer. Since incorrect data thru/or
`the same attached data as a user recording medium are not recorded on an information
`provider's computer, data of the past recorded on a user recording medium and an
`information provider's computer becomes inharmonious. As a result, an unauthorized
`use of a user recording medium with which forgery or data was altered can be
`effectively prevented by comparing attached data.
`[OO24]Since attached data relevant to software written in a user recording medium is
`recorded on a computer of an information provider who distributes software
`simultaneously with the purchase of software and is accumulated, it can perform
`sale/sales management of software. Since both sides of software, such as a game, and
`attached data containing