JP4206004B2 - MEMORY CARD READ / WRITE DEVICE, ACCESS METHOD, PROGRAM, AND RECORDING MEDIUM THEREOF - Google Patents

Description

  The present invention relates to a memory card reading / writing device for reading information stored in a removable memory card, and more particularly to a memory card reading / writing device having a function of determining the owner of a memory card.

  In recent years, memory cards have been known as portable portable compact recording media that can simultaneously store all types of large-capacity data such as text files, music content, and video content as semiconductor memory becomes smaller and more portable. ing. The memory card is mounted on portable devices such as an audio player, a digital camera, and a PDA (Personal Digital Assistant), taking advantage of its small size. For example, an SD (Secure Digital) memory card is well known as such a memory card.

Currently, such a memory card is relatively expensive, and the owner (user) usually does not transfer or distribute the memory card to another person.
JP 2001-211170 A

  The memory card can also be expected to be cheap in the future. This is apparent from FD (Floppy (R) Disk), CD-R, and the like that are currently popular.

In such a situation, it is considered that it is not unusual to use the memory card, for example, by easily transferring it to another person or sharing it within a specific group. Specifically, for example, a case where a memory card is used for a circulation board used in a town or an exchange diary exchanged between friends corresponds to this.
Further, it is conceivable that one person owns a plurality of memory cards in accordance with data to be recorded, such as music data, image data, document files, and the like.

  However, when considering a usage pattern such as transfer to another person or sharing within a specific group, the security technology applied to the current memory card or other storage medium may hinder the usage pattern. It is possible to come.

  That is, the following problems occur when security is not provided at all when the memory card is used. For example, when data such as the exchange diary that the user does not want to be seen by other people is stored, the user or group does not want the other person to see the data. In other words, when a memory card storing such data is lost, if security is not applied, it can be said that the user's anxiety increases compared to security.

  On the other hand, when strong security is applied when using the memory card, it is necessary to notify all users of a method of canceling security by, for example, notifying a password. That is, when a single memory card is used by a plurality of people, if the above-described strong security is applied, a complicated operation is required to view data.

  As an example of the above-mentioned strong security, a technique described in JP-A-2001-211170 can be cited. In this technique, the authentication process is performed using the identification data of the memory card and the identification data of the device, thereby preventing the memory card from being used by a device other than a specific device.

  However, in this prior art, it is necessary to provide a memory card with a specific security function, and it cannot be realized in a memory card that does not have a security function currently on the market. Further, as described above, when such a strong security function is provided, the memory card cannot be used except by a specific device, and therefore cannot be used when the memory card is shared by a plurality of people.

  In other words, the data stored in the memory card for sharing is not necessarily security-free, but it has the property of causing operational problems when strong security is set.

  In addition, when a plurality of memory cards are owned, management problems arise in addition to the security problems described above. That is, one problem is related to the management of the memory card itself.

  As a method for managing the memory card itself, as in the conventional FD (R), a label on which the contents of various stored data are written can be attached to the memory card body. However, since the memory card has been miniaturized, it is difficult to label the memory card with information such as owner and contents. In addition, when holding a plurality of memory cards individually, it is troublesome to label all the memory cards, and the labels may be removed when the memory cards are inserted into and removed from the memory card reading / writing device. There is also.

  In addition, there is a problem regarding management of data stored in the memory card. That is, when different types of data are stored in the memory card, it is necessary to execute a dedicated application or use a dedicated device for each type of data in order to check the contents of the memory card. Here, if the file management software on the personal computer is used, the file name can be confirmed. However, for example, it is not easy to confirm the title of the music in the music content from the original content management method of the memory card. That is, there is a problem that it is not easy to confirm the contents of data stored in the memory card.

  In addition, there is a problem regarding management of the user of the memory card. That is, in an environment where a plurality of memory cards are shared by a plurality of users, there arises a problem that the main owner of the memory card is not known.

  The present invention has been proposed on the basis of the above-described conventional circumstances, and realizes a security that fulfills a psychological defense function, that is, a weak security function, and can cope with a loss of a memory card, and a memory. An object of the present invention is to provide a memory card reading / writing device, an access method, a program, and a recording medium for realizing various card management.

  The present invention employs the following means in order to achieve the above object. That is, the present invention is premised on a memory card reading / writing device in which a memory card can be inserted and removed. Here, the device user information acquisition unit acquires the device user information from the storage unit that stores the device user information for specifying the user of the memory card reading / writing device. The memory card user information acquisition unit acquires main memory card user information for specifying a main user of the memory card from the memory card. Then, the user information comparison unit compares the two pieces of information and outputs a comparison result. The output means performs a predetermined output based on the comparison result.

  As the output contents, when the comparison result between the device user information and the main memory card user information is inconsistent, the main memory card user information itself or a configuration for outputting information about the main user of the memory card, or inconsistency There is a configuration for outputting information indicating that.

  In this configuration, since predetermined information (warning, main memory card user information, etc.) is output, it is possible to prevent information recorded on the memory card from being inadvertently read as compared to the case where no security is provided. Alternatively, the owner of the memory card can be specified without checking the contents of the memory card in detail.

  Even if the device user information and the main memory card user information do not match, the information recorded in the memory card can be read out, viewed, and reproduced, so that strong security is provided. Compared to the case, smooth operation is possible even when a plurality of people share a memory card.

  In addition, the output content when the comparison result is coincident is information indicating the content list of the data stored in the memory card acquired by the memory card content list information acquisition unit, so that the user can change the content of the memory card. It can be easily confirmed, that is, management of data stored in the memory card is facilitated. Even when there are multiple areas in the memory card, the memory card is used by multiple users by determining the memory card user information that identifies the main user of each area. It is also possible to improve convenience when using multiple people.

  Further, there is a configuration in which history information writing means writes history information including device user information to a memory card when the comparison result does not match.

  In this configuration, the owner of the memory card can know the fact that the memory card has been used by another person. Further, when the memory card is used for an operation that requires information about the circulation process such as a circulation board, it is possible to automatically grasp the circulation process. The history information may include information related to the content read (accessed) from the memory card. In this case, the owner of the memory card can grasp which content has been browsed.

  Further, the output means outputs information indicating that a history of access to the memory card is created, and the history information writing means includes data stored in the memory card by the memory card content list information obtaining means. There is a configuration in which history information is written after obtaining information indicating the contents list.

  In this configuration, for example, information such as “when a memory card is read, a history is created”, that is, a history of access to the memory card is created as information output by the output means to the display or the like. It is possible to include information indicating that. By including such information, it is possible to strengthen psychological security when other users read the information on the memory card. Of course, since it does not become psychological security for the user who has obtained permission, smooth operation is not hindered.

  Further, when the device user information and the memory card user information do not match, there is a configuration in which the function restricting means performs a process that causes a decrease in the function of the memory card reading / writing device. Examples of processing that causes functional degradation include turning off the display backlight, lowering the display brightness, lowering the processing speed of the CPU (Central Processing Unit), overlaying predetermined display data, and outputting predetermined audio. Can be mentioned.

  With this configuration, the convenience of the memory card reading / writing device can be lowered, and as a result, the weak security function can be enhanced.

  Still further, the memory card user information acquisition unit acquires sub memory card user information for identifying a user of the memory card different from the main memory card user information from the memory card, and the user information comparison unit includes the device user information, There is a configuration that compares the sub-memory card user information and outputs a comparison result.

  In this configuration, by registering the members of the group that can use the memory card in the sub memory card user information, the user registered in the sub memory card user information can use the memory card without warning. In other words, since it can be used by the user group using the secondary memory card user information registered in the memory card, free access is permitted within the user group, and loose restrictions can be easily applied to others. Can be set.

  Further, when the comparison result is coincident, the user information generation means accepts input of new main memory card user information, and the memory card user information writing means inputs the new main memory card user information to the memory card. There is a configuration to write to.

  In this configuration, since the main memory card user information can be rewritten only for the own memory card, the memory card can be easily transferred to others while maintaining weak security. . As a result, it is possible to promote the distribution of content using a memory card.

  The user information generation means may be configured to selectively input new main memory card user information from the sub memory card user information.

  In this configuration, not only can the input be facilitated, but the main memory card user information of the self-owned memory card can be rewritten only to other user information registered in advance, such as a specific group member. Therefore, the personal information can be easily transferred to others while avoiding the leakage of personal information.

  Further, the user information generation means may be configured to be able to input information indicating that the user is not limited as new main memory card user information.

  In this configuration, by writing the main memory card user information without inputting a new user ID and a new user name, it becomes possible to distribute to an unspecified number of people without weak security as with newly purchased memory cards. .

  Further, when the comparison results are inconsistent and the main memory card user information cannot be specified, the memory card can be easily transferred by using the apparatus user information as new main memory card user information.

  Furthermore, there is a configuration in which existing device user information is stored as old device user information when new device user information is registered, and the memory card user information and old device user information are compared as necessary.

  With this configuration, for example, even when the device user information is changed due to transfer or the like, the user information of the existing memory card can be automatically rewritten, so that the convenience of the user can be improved.

  On the other hand, when the comparison result between the device user information and the main memory card user information does not match, there is a configuration in which the mail transmission means transmits a mail to the e-mail address included in the main memory card user information.

  In this configuration, when the owner of the memory card reading / writing device is different from the owner of the memory card, for example, when the user who is the owner of the memory card reading / writing device inserts the memory card, the memory card Is notified to the owner of the memory card by e-mail, so that the owner of the memory card can know the usage status of the memory card at a remote place.

  In addition, by including the information of the user of the memory card reading / writing device such as address information in the mail, it is possible to clearly know who is using it.

  Furthermore, by providing GPS and including information on the current position obtained from the GPS in the user information, it is possible to know the position of the memory card even if it is lost.

  In addition, mail receiving means for acquiring device user information for identifying the user of the partner device from the received mail is provided, and the comparing means compares the device user information of the partner device with the main memory card user information for comparison. The access control means may control the access of the memory card based on the comparison result while outputting the result. Here, the access control means can control access to the memory card from a remote place by controlling the access to the memory card based on the use conditions included in the mail.

  The use conditions can include usable, unusable, usable number of times, transfer, period setting, and the like.

  In this case, the memory card reading / writing device that transmits the email includes use permission information generating means for generating use permission information including device user information and use conditions of the memory card accessible at the destination device, A mail transmission unit that transmits the use permission information generated by the use permission information generation unit to the transmission destination device.

  Here, the memory card reading / writing device can be embodied using a computer. In that case, each means mentioned above is actualized by operating a program on a computer.

  In the memory card reading / writing device according to the present invention, the device user information and the main memory card user information are compared, and predetermined information (warning or the like) is output based on the comparison result. The owner of the memory card can be specified without checking the details. In addition, it is possible to prevent the information recorded on the memory card from being inadvertently read compared to the case where no security is provided.

  In addition, even if the device user information and the main memory card user information do not match, the information recorded in the memory card can be read, viewed and played back, so that strong security is provided. Compared to the case where the memory card is shared, a smooth operation is possible even when the memory card is shared by a plurality of people.

  Further, when the device user information and the main memory card user information match, the memory card content list information acquisition means can immediately display the content list of the memory card when the memory card is inserted. For this reason, the user can easily confirm the contents of the memory card, that is, the data stored in the memory card can be easily managed.

  Furthermore, by comparing each of the plurality of memory card user information in the memory card with the device user information, the user can automatically obtain information on his / her use area only by inserting the card. Thereby, the convenience in using a large-capacity memory card by a plurality of users can be improved.

  Furthermore, when the owner of the memory card reading / writing device is different from the owner of the memory card, history information including device user information of the device that has accessed the memory card can be recorded on the memory card. Therefore, the owner of the memory card can know the fact that the memory card has been used by another person.

  Furthermore, when a memory card is used for an operation that requires circulation history information such as a circulation board, it is possible to automatically grasp the circulation history by recording history information.

  Furthermore, when the owner of the memory card reading / writing device is different from the owner of the memory card, for example, the information output by the output means to the display or the like is “if the memory card information is read, the history is It is possible to include information indicating that a history of access to the memory card is created. By including such information, it is possible to strengthen psychological security when other users read the information on the memory card.

  Furthermore, by storing the content browsing information for the browsed content in addition to the memory card user information, the owner of the memory card can grasp which content has been referred to. For this reason, for example, even when a memory card is found after an unintentional loss, it is possible to take action based on the referenced content.

  Furthermore, when the comparison results do not match, the function of the memory card reading / writing device is deteriorated. Therefore, the convenience of the memory card reading / writing device is lowered, and as a result, the weak security function can be enhanced. .

  Furthermore, by registering the members of the group that can use the memory card in the sub memory card user information, the user registered in the sub memory card user information can use the memory card without warning. In other words, it can be used by the user group using the secondary memory card user information registered in the memory card, allowing free access within the user group and easily setting loose restrictions for others. can do.

  Furthermore, since the main memory card user information can be rewritten only for the self-owned memory card, the memory card can be easily transferred to another person while maintaining weak security. As a result, it is possible to promote the distribution of content using a memory card.

  Furthermore, a new user ID and the new user name may be selected from the sub memory card user information. In this case, not only the input is facilitated, but also the main memory card user information of the self-owned memory card is rewritten only with other user information registered in advance, such as a specific group member. Therefore, the personal information can be easily transferred to others while avoiding the leakage of personal information. In addition, by writing the main memory card user information without inputting the new user ID and the new user name, it becomes possible to distribute to an unspecified number of people without weak security, similarly to a newly purchased memory card.

  Furthermore, the old device user information is stored, and if the device user information (new device user information) and the main memory card user information do not match, the old device user information is compared. Thereby, even when the device user information is changed by, for example, transfer, the user information of the existing memory card is automatically rewritten, that is, the user can rewrite the main memory card user information. .

  Further, when the owner of the memory card reading / writing device is different from the owner of the memory card, for example, when the user who is the owner of the memory card reading / writing device inserts the memory card, the memory card Is notified to the owner of the memory card by e-mail, so that the owner of the memory card can know the usage status of the memory card at a remote place.

  Furthermore, by making the address information the current position information obtained from, for example, GPS, it is possible to know the position of the memory card even when the memory card is lost.

  Furthermore, the memory card access control means controls the access to the memory card based on the information contained in the mail, so that not only the use status of the memory card can be grasped in real time, but also the memory card can be accessed from a remote place. You can control access.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. In addition, the following embodiment is an example which actualized this invention, Comprising: It is not the thing of the character which limits the technical scope of this invention. In the following embodiments, a PDA is used as a specific example of the memory card reading / writing device. However, any device that can access the memory card may be used. The present invention can be applied to any memory card as long as it is a portable recording medium.

Furthermore, in the embodiment shown below, the memory card reading / writing device is described as a contact type access method with a memory card, but a memory card reading / writing method employing a non-contact type access method. Embedded device. In this case, the state in which the memory card is inserted in the contact type access method corresponds to the state in which the memory card reader / writer recognizes that the memory card is accessible in the non-contact type access method. Further, the state in which the memory card is removed corresponds to a state in which the memory card reading / writing device disconnects the connection with the memory card, for example, by software in the non-contact access method.
(Embodiment 1)
Hereinafter, a process of connecting and using a memory card in the memory card reading / writing device according to the first embodiment of the present invention will be described.

  FIG. 1 is a schematic functional block diagram when a PDA is specifically used as the memory card reading / writing device 100. The memory card reading / writing device 100 stores device user information 101 in the storage means 108. Further, the apparatus includes a user information acquisition unit 102, a memory card user information acquisition unit 103, a user information comparison unit 104, an output unit 105, a memory card content list information acquisition unit 106, and a history information writing unit 107. Details of the processing of each means will be described as needed.

  FIG. 2 is a conceptual diagram showing a specific operation when a memory card used by a plurality of people is inserted into the memory card reading / writing device (PDA) 100.

  In FIG. 2, the PDA 100 is connected to a memory card 120 that can be inserted and removed, and includes a display 203 for displaying display information 202 to a user of the PDA 100 and an operation button 204 for operating the PDA 100. The apparatus user information 101 for identifying the user is stored. Here, the user of the PDA 100 is “Taro Yamada”.

  Further, the memory card 120 stores main memory card user information 121 for specifying a main user of the memory card. Here, the main user of the memory card is “Ichiro Tanaka”.

  First, for example, when the power of the PDA 100 is turned on, the device user information acquisition unit 102 configuring the PDA acquires the device user information 101 for identifying the user of the PDA from the storage unit 108 and transmits it to the user information comparison unit 104. (FIG. 3: S301).

  Subsequently, for example, the PDA 100 determines whether or not the memory card 120 is inserted. Here, when the memory card 120 is detected, the memory card user information acquisition unit 103 acquires main memory card user information 121 that identifies a main user of the memory card in the memory card 120, and the user It transmits to the information comparison means 104 (FIG. 3: S302). As shown in FIG. 4A, the device user information 101 includes a 4-byte user ID 401 indicating a number for identifying a PDA user, and a 64-byte user name 402 indicating the name of the PDA user. The Similarly, the main memory card user information 121 is composed of a 4-byte user ID 401 indicating a number for identifying the main user of the memory card and a 64-byte user name 402 indicating the name of the user of the memory card. Is done.

  Next, the user information comparing means 104 compares the user ID 401 of the device user information 101 with the user ID 401 of the main memory card user information 121, and compares the comparison result with the device user information 101 and the main memory card user information 121. Are transmitted to the output means 105 (FIG. 3: S303). The above comparison result is represented by 4-byte data as shown in FIG. 5. When the comparison result does not match, it becomes “UNMATCH” defined in the value 1, and the comparison result is matching Is "MATCH" defined with a value of 0. In some cases, the new memory card or the like does not contain main memory card user information. In such a case, “NOTHING” defined as value 2 is set.

  Subsequently, when the comparison result is “UNMATCH”, the output unit 105 generates output information based on the main memory card user information and outputs it to the PDA user (FIG. 3: S304 No → S306).

  When the comparison result is “MATCH”, the output unit 105 acquires the memory card content list information 123 indicating the content list of the memory card from the memory card 120 via the memory card content list information acquisition unit 106. Then, output information is generated based on the memory card content list information and output to the PDA user (FIG. 3: S304 Yes → S305 → S306).

  As shown in FIG. 6A, the memory card content list information is composed of file list information 602 of 68 bytes or more indicating a file list for each file type, and a 4-byte file type number 601 indicating the number of file list information. The As shown in FIG. 6B, the file list information includes a 64-byte file type name 603 indicating the file type, a 128-byte file name 605 indicating the name of each file, and 4 bytes indicating the number of files. File number 604.

  The processing described above will be described below using more specific values. For example, when the memory card 120 is inserted into the PDA 100, first, as shown in FIG. 7A, the device user information 101 having the values of user ID = 0120 and user name = “Yamada” is acquired by the device user information acquisition means 102. (FIG. 3: S301). Subsequently, as shown in FIG. 8A, main memory card user information 121 having a value of user ID = 0124 and user name = “Tanaka” is acquired from the memory card 120 by the memory card user information acquisition means 103 (FIG. 8A). 3: S302). This is a situation where Mr. Yamada tried to read information recorded on Mr. Tanaka's memory card for some reason.

  Next, the user information comparing means 104 compares the user ID “0120” of the device user information 101 with the user ID “0124” of the main memory card user information (FIG. 3: S303). Here, since the comparison result is “UNMATCH”, the output means 105 generates display information based on the main memory card user information, and the memory 203 of the memory card is displayed on the display 203 of the PDA 100 as shown in FIG. 9A. Information including the name “Tanaka” 901 of the main user is output. The image at the time of output is the lower left figure of FIG. In addition, although the said output is performed using the display, for example, you may perform audio | voice output, such as "This memory card is Tanaka's thing." For output, it is effective to notify (warn) that the main memory card user information and the device user information are different. In response to the notification, for example, Mr. Yamada can read the information recorded on Mr. Tanaka's memory card by selecting the “OK” button 205. In other words, the information recorded on the memory card can be accessed without any problem except that the notification is displayed. Thereafter, information in the memory card can be browsed and reproduced according to functions provided in the PDA 100. Further, by removing the memory card in response to the above notification, it is possible to determine that the memory card is a memory card of another person without accessing the information recorded on the memory card.

  On the other hand, as shown in FIG. 7A, device user information such as user ID = 0120 and user name = “Yamada” is acquired, and as shown in FIG. 8B, user ID = 0120, user name = “Yamada”. When the main memory card user information is acquired, the comparison result is “MATCH”. This is a situation where Mr. Yamada tried to read information recorded on his own memory card.

  In this case, for example, as shown in FIG. 10, the file type name 1001 is composed of two file list information with “SD-Audio” and “SD-Video”, and “SD-Audio” Memory card content list information 1000 is obtained from the memory card, which is composed of two files with the file names “black cat tango” 1002 and “white cat waltz” 1003.

  Next, the output means 105 generates output information based on the acquired memory card content list information, and outputs a memory card content list as shown in FIG. 9B to the display 203 of the PDA 100. The image at the time of output is the lower right figure of FIG. 2, that is, when the user of the PDA 100 and the user of the memory card match, the notification (warning) described above is not output. Thereafter, information in the memory card can be browsed and reproduced according to functions provided in the PDA 100.

  As described above, the device user information is compared with the main memory card user information, and predetermined information (warning or the like) is output based on the comparison result, so that the memory can be checked without checking the contents of the memory card in detail. The owner of the card can be specified. In addition, it is possible to prevent the information recorded on the memory card from being inadvertently read compared to the case where no security is provided.

  Furthermore, even when the device user information and the main memory card user information do not match, the information recorded in the memory card can be read out, viewed, and reproduced, so that strong security is provided. Compared to the case where the memory card is shared, a smooth operation is possible even when the memory card is shared by a plurality of people.

  If the device user information and the main memory card user information match, the memory card content list can be displayed immediately via the memory card content list information acquisition means when the memory card is inserted. For this reason, the user can easily confirm the contents of the memory card, that is, the data stored in the memory card can be easily managed.

  Next, the case where the memory card is divided into a plurality of user areas will be described. FIG. 11 shows an image in which the memory card 1101 is divided into a plurality of parts. That is, the memory card 1101 is divided into a plurality of areas (A) 1104 and areas (B) 1105, each of which includes memory card user information (A) 1102 and memory card user information (B) 1103. State. The area here may be logically divided, and may be divided, for example, in units of folders.

  When such a memory card 1101 is inserted into the PDA 100, first, the user information comparison unit 104 acquires device user information via the device user information acquisition unit 102 (FIG. 12: S1201). Further, the user information comparison unit 104 further acquires the memory card user information in the memory card 1101 for each area via the memory card user information acquisition unit 103 (FIG. 12: S1202). If there is a memory card user information list 1106 in which the memory card user information and the area corresponding to the information are associated in the memory card 1101, the memory card user information list may be acquired.

  Subsequently, the user information comparison unit 104 determines whether or not the device user information is compared with all the acquired memory card user information (FIG. 12: S1203).

  If all the determinations have not been completed, the user information comparison unit 104 compares the device user information and the memory card user information (FIG. 12: S1203 No → S1205). Further, if the comparison result is coincident, the memory card content list information of the corresponding area is acquired and displayed on the display via the output means 105 (FIG. 12: S1206 Yes → S1207).

  If the comparison result does not match, comparison with another memory card user information is performed (FIG. 12: S1206 No → S1203). If all the memory card user information and device user information do not coincide with each other, the above-described warning display, weak security processing described later, and the like are performed (FIG. 12: S1203 Yes → S1204 → End). .

  As described above, by comparing a plurality of pieces of memory card user information in the memory card with the device user information, the user can automatically obtain information on his / her use area only by inserting the card. Thereby, the convenience in using a large-capacity memory card by a plurality of users can be improved.

  If there are a plurality of areas of the same user, for example, the above process may be performed each time the area (folder) is switched, or the comparison result at the time of inserting the memory card may be stored. Further, when trying to access another user's area, the above-described processing or the processing related to weak security described later may be performed.

  By the way, even if the above output (warning or the like) is performed, if the owner does not know that the information has been read, there may be a user who reads the information without any resistance. In order to cope with such a case, a function described below may be added. Of the steps shown in FIG. 13, the same processes as those in FIG.

  In the above example, when the result of comparing the user IDs of the PDA 100 and the memory card 120 is “UNMATCH”, the name of the main user of the memory card is displayed on the display 203 of the PDA 100. Here, at the same time, the apparatus user information 101 is left on the memory card.

  That is, in this case, the user ID of the acquired device user information 101 is compared with the user ID of the main memory card user information 121. If the comparison result is “UNMATCH”, the output means 105 writes the history information. The device user information 101 is output to the means 107 (FIG. 13: S303 → S304 No).

  The history information writing means 107 that has received the device user information is a memory that indicates the usage history of the memory card 120 based on the device user information and the date and time acquired from a timer (not shown) provided in the PDA 100. Card user information 1401 is generated and additional writing is performed on the history information 122 of the memory card 120 (FIG. 13: S1301).

  The memory card user information 1401 is represented by a data structure as shown in FIG. 14A, and includes a 4-byte user ID 1402 indicating a number for identifying the user of the PDA 100, and 64 bytes indicating the name of the user of the PDA 100. User name 1403 and a 128-byte use date 1404 indicating the date and time when the memory card was used.

  The history information 122 is represented by a data structure as shown in FIG. 14B, for example. Zero or more pieces of memory card user information 1401, a 4-byte memory card user number 1405 indicating the number of memory card user information, and Consists of

  The processing described above will be described below using more specific values. When the user of the PDA 100 inserts the memory card 120 into the PDA 100, first, as shown in FIG. 7A, device user information having a value of user ID = 0120 and user name = “Yamada” is acquired. As shown in FIG. 13, main memory card user information having a value of user ID = 0124 and user name = “Tanaka” is acquired (FIG. 13: S301 to S302).

  Next, the user information comparison unit 104 compares the user ID “0120” of the device user information with the user ID “0124” of the main memory card user information, and the comparison result is “UNMATCH” (FIG. 13: S303). → S304 No).

  Here, the memory card user information indicating that the user having the user ID = “0120” and the user name “Sato” shown in FIG. 15B has used “2002/3/1 10:30” is the history information. It is assumed that 1501 is recorded in advance on the memory card.

  Based on the “UNMATCH”, the output means 105 outputs device user information to the history information writing means 107. The history information writing means 107 creates memory card user information as shown in FIG. 15A and additionally writes it as new memory card user information 1502 as shown in FIG. 15B. Also, 1 is added to the number of memory card users (1405, 1503) in the history information 122 (FIG. 13: S1301). As a result, Mr. Yamada's device user information is written in the history information of Mr. Tanaka's memory card. Therefore, Mr. Tanaka can confirm that the information stored in the memory card has been viewed by Mr. Yamada by viewing the history information of the memory card at a later date.

  As described above, when the owner of the memory card reading / writing device is different from the owner of the memory card, history information including device user information of the device that has accessed the memory card can be recorded on the memory card. Therefore, the owner of the memory card can know the fact that the memory card has been used by another person.

Further, for example, when a memory card is used for an operation that requires information about the circulation process such as the circulation board, it is possible to automatically grasp the circulation process by recording the history information. The history information is preferably stored, for example, by being encrypted or stored in a secure area in the memory card.

  By the way, when the owner of the memory card reading / writing device and the owner of the memory card are different, in addition to the memory card user information described above, content browsing information indicating which content has been browsed is added to the history information. May be. In this case, when the user reads predetermined content from the memory card 120, for example, a warning to the user as shown in a display 1801 in FIG. 18A is displayed. When the user ignores the warning and reads the content, the history information writing unit 107 adds the name, date and time, and the number of times of the read content in the history information generation / write processing S1301 to the history information 122. To do. When the addition is completed, as shown in display 1802, a display indicating that the history referring to the content is stored in the memory card is performed.

  When content browsing information is added to the history information, the memory card user information 1601 included in the history information is represented by a data structure as shown in FIG. 16A. That is, the memory card user information 1601 is configured by adding the top address 1602 of the content browsing information to the structure of the memory card user information 1401 shown in FIG. 14A. The start address 1602 of the content browsing information stores the start address of the area in which the content browsing information 1603 shown in FIG. 16B is stored. The content browsing information 1603 includes a 128-byte file name 1604 that is the file name of the content read by the user corresponding to the user ID 1402, a 64-byte file type name 1605 that indicates the type of the content, and the file at the end. 128-byte last use date and time 1606 indicating the read date and time, 4-byte browsing count 1607 indicating the number of times the content has been browsed, and the head to the next content browsing information of 4 bytes that is the top address of the next content browsing information An address 1608 is included.

  A specific example in which content browsing information is added to history information is shown in FIG. 17A. In FIG. 17A, the top addresses 1701 and 1702 of content browsing information are added for each user ID to the history information shown in FIG. 15B. In the start address of the content browsing information, the start address of the area in which the content browsing information corresponding to each user ID shown in FIG. 17B is stored is described. Specifically, the related content browsing information 1703 can be referred to based on “1001” stored in the top address 1702 of the content browsing information of the user ID 0120 ”.

  The content browsing information 1703 includes a file name 1704 of the content read by the user corresponding to the user ID, a file type name 1705 indicating the type of the content, a last use date 1706 indicating the date and time when the file was last read, A browsing count 1707 indicating the number of browsing of the content and a head address 1708 of the next content browsing information are included. Further, based on the start address 1708 of the next content browsing information, it is possible to refer to content browsing information regarding another content.

  As described above, in addition to the memory card user information, by storing the content browsing information for the browsed content, the owner of the memory card can grasp which content has been referred to. For this reason, for example, when a memory card is found after unintentional loss, it is possible to take action based on the referenced content.

  The content browsing information can be displayed to the owner of the memory card as shown by a display 1803 in FIG. 18B using a predetermined history display means (not shown) provided in the PDA 1901, for example. In the display, the name of the user who browsed the content, the file name of the referenced content, the file type name, the last use date and time, the number of times of browsing, and the like are displayed.

  If the owner of the memory card reading / writing device and the owner of the memory card are different, for example, the information output by the output means to the display etc. Information indicating that a history of access to the memory card is created (for example, warning information) can be included. By including such information, it is possible to strengthen psychological security when other users read the information on the memory card. Of course, since it does not become psychological security for the user who has obtained permission, smooth operation is not prevented.

  When displaying information indicating that the history is to be created, “output information generation and output” step S1302 and “memory card content list information acquisition” step S1303 by the output means are executed before step S1301 in FIG. Is done. Note that the step S1302 is an output including the above-mentioned “information indicating that history information is created”. At this time, if the memory card is removed, the history information does not remain in the memory card. This information is not read out. By ignoring the warning and selecting, for example, the “OK” button, the “memory card contents list information acquisition” step S1303 and the “history information generation and writing” step S1301 are executed, that is, information in the memory card. Is read and the history information is saved.

  As described above, the function of recording a history has been described as a function for preventing easy reference of content by a user different from the owner, but other functions described below may be added.

  That is, when the user information comparing means 104 compares the device user information with the main memory card user information and there is a discrepancy, the function restricting means 1905 receives the notification and has a function for making the display of the PDA 1901 easier to see, for example. Turn off some backlight. FIG. 18C shows a display image when the backlight is turned off. The backlight of the display 1804 of the PDA 1901 is turned off, making it difficult to view the display content on the display. Thereby, it is difficult for the user to refer to the display content, and as a result, the weak security function can be enhanced.

In addition to turning off the backlight, examples of the process that the function restriction unit 1905 enhances the weak security function include the following.
For example,
・ Process to reduce the brightness of the display ・ Process to reduce the processing speed of the CPU (Center Processing Unit) provided in the PDA ・ For example, a warning or a display that makes it difficult to view the normal display is displayed in addition to the normal display (overlay) Processing, such as processing a buzzer regularly or constantly.

  By the processing that causes the PDA function to be degraded by such function limiting means, the convenience of the PDA 1901 can be reduced, and as a result, the weak security function can be enhanced.

  By the way, in addition to the main memory card user information, for example, information related to a user who may use (read, write) information in the memory card 120, that is, sub memory card user information is recorded. The memory card user information acquisition unit 103 may also read out the sub memory card user information. The sub memory card user information is also compared with the device user information 101 in the user information comparing means 104. The sub memory card user information is shown in FIG. 4B. In the secondary memory card user information, the number of usable user IDs 405 and a 4-byte user ID 406 are stored. Needless to say, a user name corresponding to the user ID 406 may be added.

In this configuration, for example, by registering a member of a group that can use the memory card in the sub memory card user information, a user registered in the sub memory card user information can use the memory card without warning. Become. In other words, it can be used by the user group using the secondary memory card user information registered in the memory card, allowing free access within the user group and easily setting loose restrictions for others. can do. Here, the sub-memory card user information can also be handled as user information that cannot use the memory card, for example. In this case, when the user corresponding to the sub memory card user information uses the card, the user can use the card with the above-described weak security. Furthermore, the warning display content may be changed for each sub memory card user information, or audio data for different warnings may be output.
(Embodiment 2)
Next, the memory card reading / writing device according to the second embodiment will be described. The memory card reading / writing device (PDA 1901) according to the second embodiment can rewrite main memory card user information under a predetermined condition. As shown in FIG. 19, the PDA 1901 includes a user information generating unit 1903 and a memory card user information writing unit 1904 in addition to the configuration in the first embodiment.

  First, when the user inserts the memory card 120 into the PDA 1901, the PDA 1901 acquires the device user information 101 and the main memory card user information 121, and then the user information comparison unit 104 compares the two pieces of information described above. This is the same as in the first embodiment (FIG. 20: S300).

  Here, when the apparatus user information 101 and the main memory card user information 121 match, the user information comparison unit 104 notifies the user information generation unit 1903 of the match (FIG. 20: Yes in S304).

  Subsequently, the user information generation unit 1903 that has received the message of matching outputs, for example, the display shown in FIG. 21 to the display of the PDA 1901 or the like. Here, the display includes, for example, a dialog box for requesting the user of the PDA 1901 to input a new user ID 2101 and a new user name 2102.

  For example, when the user inputs a new user ID 2101 and a new user name 2102 with respect to the above display, the input information is received by the user information generating unit 1903, and the memory card user information writing unit is used as main memory card user information. The data is written in the memory card 120 by 1904 (FIG. 20: S2001 → S2002).

  As described above, since the main memory card user information can be rewritten only for the own memory card, the memory card can be easily transferred to others while maintaining weak security. Become. As a result, it is possible to promote the distribution of content using a memory card.

  When the device user information 101 and the main memory card user information 121 do not match and the main memory card user information 121 is NULL, for example, the memory card user is assumed to be a new memory card. The information writing means 1904 writes the device user information 101 as main memory card user information in the memory card 120 (FIG. 20: S304 No → S2003 No → S2002).

  When the device user information 101 and the main memory card user information 121 do not match and some information is stored in the main memory card user information 121, other processing is performed (FIG. 20: S304 No → S2003 Yes → S2004). Here, the other processing is processing such as steps S304 No to S306 in the first embodiment, for example.

  Further, the new user ID 2101 and the new user name 2102 may be selected from the sub memory card user information described in the first embodiment. In this case, not only the input is facilitated, but also the main memory card user information of the self-owned memory card is rewritten only with other user information registered in advance, such as a specific group member. Therefore, the personal information can be easily transferred to others while avoiding the leakage of personal information.

  In addition, by writing the main memory card user information without inputting it in the dialog box that prompts for the input of the new user ID and the new user name, it can be distributed to unspecified number of people without weak security like newly purchased memory cards. Things are possible.

  By the way, the process described above does not consider the case where the device user information 101 is changed. That is, when the device user information 101 is changed by transfer or the like, all main memory card user information needs to be changed in order to use an existing memory card. However, it is very troublesome for a user who owns a plurality of memory cards.

  Therefore, the PDA 1901 stores a plurality of device user information. That is, for example, when new device user information is registered in the PDA 1901, the user information generating unit 1903 inquires of the user whether or not the old device user information is to be stored by a display display or the like. When the user selects to save the old device user information in response to the inquiry, the user information generation unit 1903 stores the old device user information in a storage unit (not shown) and then registers the new device user information. Device user information is registered as device user information. As a result of this processing, the PDA 1901 stores new device user information and old device user information. Here, any number of old device user information may be stored.

  If the user selects not to save the old device user information, the old device user information is deleted without being stored in the PDA 1901.

  Now, when the memory card 120 is inserted into the PDA 1901, the user information comparison unit 104 acquires device user information via the device user information acquisition unit (FIG. 22: S2201). The device user information here corresponds to the new device user information. Further, the memory card user information acquisition unit 103 acquires main memory card user information 121 from the memory card 120 (FIG. 22: S2202). Next, the user information comparing means 104 compares the two pieces of user information and determines whether or not they match (FIG. 22: S2203).

  Here, if they match, the user of the PDA 1901 can use the memory card 120 without any problem (FIG. 22: S2204 Yes → End).

  Here, if they do not match, the user information comparison unit 104 further determines whether there is old apparatus user information (FIG. 22: S2204 No.fwdarw.S2205). If there is no old device user information, for example, the warning shown in FIG. 9A is displayed, and thereafter, history information is stored as described above (FIG. 22: S2205 No → 2206 → End).

  Further, when there is old device user information, the user information comparison unit 104 acquires the old device user information via the device user information acquisition unit 102 and determines again whether or not it matches the main memory card user information. (FIG. 22: S2205 Yes → S2207 → S2208).

  If the old device user information matches the main memory card user information, the memory card user information writing means 1904 writes the device user information as the main memory card user information in the memory card 120 (FIG. 22: S2209 Yes → S2210). The device user information here is new device user information. Thereafter, the user of the PDA 1901 can use the memory card 120 without any problem.

  If the device user information and the main memory card user information do not match, a warning or the like is displayed as described above, and history information is stored thereafter (FIG. 22: S2209 No → 2206 → End).

In the above, the old device user information is stored, and when the device user information (new device user information) does not match the main memory card user information, the old device user information is compared. Thereby, even when the device user information is changed by, for example, transfer, the user information of the existing memory card is automatically rewritten, that is, the user can rewrite the main memory card user information. .
(Embodiment 3)
Next, a memory card reading / writing device according to the third embodiment will be described. The memory card reading / writing device (PDA 2301) according to the third embodiment enables the owner of the memory card at a remote location to grasp the current state of the memory card. As shown in FIG. 23, the PDA 2301 includes a mail transmission / reception unit 2302 and a mail information acquisition unit 2303 in addition to the configuration in the first embodiment.

  First, when the user inserts the memory card 120 into the PDA 2301, the PDA 2301 obtains the device user information 101 and the main memory card user information 121, and then the user information comparison unit 104 compares the above two pieces of information. This is the same as in the first embodiment (FIG. 24: S300).

  If the device user information 101 matches the main memory card user information 121, the PDA 2301 performs other processing (FIG. 24: S304 Yes → S2403). The other processing is processing such as steps S304 Yes to S306 in the first embodiment, for example.

  If the device user information 101 and the main memory card user information 121 do not match, the user information comparison unit 104 transmits information indicating that fact to the mail transmission / reception unit 2302 (No in S304 in FIG. 24).

  The mail transmission / reception means 2302 that has received the information indicating that the information does not match obtains the apparatus user information shown in FIG. 7B from the storage means 108, for example, via the mail information acquisition means 2303. A user name 2506 and address information 2507 are set (FIG. 24: S2401). Similarly, for example, the title 2504 shown in FIG. Here, the sender email address 2502 is the email address of the owner of the PDA 2301, and the address information 2507 is the address of the owner of the PDA 2301.

  Further, the mail transmission / reception means 2302 acquires the e-mail address 801 shown in FIG. 8C from the main memory card user information via the mail information acquisition means 2303, and sets it as the transmission destination mail address 2503 shown in FIG. 25A (FIG. 24). : S2401). The e-mail address 801 stores the e-mail address of the owner of the memory card 120.

  Further, the mail transmission / reception means 2302 obtains the current date and time from a timer (not shown) and sets it as the use date and time 2505 shown in FIG. 25A (FIG. 24: S2401).

  Based on the above information, the mail transmission / reception means 2302 creates mail transmission information 2501. The mail transmission information 2501 is specifically shown in FIG. 25B. The email transmission information 2511 includes, for example, “yamada@saijo.xx.jp” as the source email address, “tanaka@saijo.xx.jp” as the destination email address, and “memory card usage information” as the title, The current date and time “Mon 7 May 2002 15:06:44 +0900” obtained from a timer (not shown) is used for the usage date and time, “Yamada” is used for the device user name, and “Hiroshima City Saijo 1-1 1-1” is used for the address information. Stored.

  Subsequently, the mail transmission information 2511 is transmitted by the mail transmission / reception means 2302 to a terminal capable of receiving electronic mail via the Internet, for example (FIG. 24: S2402).

  As described above, when the owner of the memory card reading / writing device is different from the owner of the memory card, for example, when the user who is the owner of the memory card reading / writing device inserts the memory card In order to notify the owner of the memory card by e-mail that the memory card has been used, the owner of the memory card can know the usage status of the memory card at a remote location.

  In addition, by using the address information as current position information obtained from, for example, GPS (Global Positioning System), it is possible to know the position of the card when the card is lost.

  Subsequently, for example, a case where the above-described mail is received by a PDA corresponding to the above-described function (mail notification function) will be described.

  When the mail transmitted by the mail transmitting / receiving means 2302 is received, the PDA 2601, for example, as shown in FIG. 27, the source mail address 2502, the destination mail address 2503, the title 2504, the use date and time 2505, the device user name 2506, and the address information 2507. A display 2701 including is output. The display is the same as the reception of a normal electronic mail.

  On the other hand, the use permission information generating means 2603 constituting the PDA 2601 outputs, for example, a dialog box for prompting the user to input the use permission setting to the display of the PDA 2601. An example of the output is shown in FIG. 33A. Here, as the address 3301, the electronic mail address (sender mail address 2502) of the PDA 2301 that transmitted the mail is automatically input.

  Assume that the user (Mr. Tanaka) who uses the PDA 2601 selects “unusable” from the usage conditions 3302 and presses the OK button in the dialog box 3300 that prompts the input.

  Then, the use permission information generating unit 2603 acquires the input information and creates the use permission information 3100 shown in FIG. 31A (FIG. 28: S2801). The use permission information 3100 includes a user ID 3101, a user name 3102, and a use condition 3103. Information acquired from the device user information 101 of the PDA 2601 is stored in the user ID 3101 and the user name 3102, and values (0 to 4) shown in FIG. 31C are stored in the use condition 3103, respectively (FIG. 28: S2802 → S2803). ).

  Here, the use permission information 3110 shown in FIG. 31B specifically shows the use permission information 3100. That is, since the user selects “unusable”, the value “3” corresponding to the use condition 3103 is obtained. Further, based on the device user information 101 of the PDA 2601, for example, “0124” is stored in the user ID 3101 and “Tanaka” is stored in the user name 3102.

  Subsequently, the use permission information generating unit 2603 creates mail transmission information including the use permission information 3110 (FIG. 28: S2804). The configuration of the mail transmission information used here is shown in FIG. 32A. The mail transmission information 3201 includes a transmission source mail address 3202 stored in the device user information 101 of the PDA 2601, a transmission destination mail address 3203 which is a mail address of the PDA 2301, a title 3204, and the current date and time obtained from a timer (not shown). And the use permission information 3100 created earlier.

  FIG. 32B shows the mail transmission information 3201 specifically. The sender email address is “tanaka@saijo.xx.jp”, the destination email address is yamada@saijo.xx.jp, the title is “memory card use certificate”, and the current date and time “Mon 7 May 2002 15:06:44 +0900”, “0124” as the user ID, “Tanaka” as the device user name, and “3” as the use condition are stored.

  When the mail transmission information 3201 is created, the mail transmission / reception means 2602 transmits a mail to the PDA 2301 based on the mail transmission information 3201 (FIG. 28: S2804).

  Next, when the mail transmission / reception means 2302 receives the mail from the PDA 2601, the user information comparison means 104 acquires the use permission information 3110 included in the mail (FIG. 29: S2901).

  Further, the memory card user information acquisition unit 103 acquires the main memory card user information 121 from the memory card inserted when the use permission information 3110 is acquired or a newly inserted memory card (FIG. 29 :). S2902).

  Subsequently, the user information comparing means 104 compares whether or not the user ID 3101 included in the use permission information 3110 matches the user ID in the main memory card user information 121 (FIG. 29: S2903). .

  If the comparison result does not match, the PDA 2301 performs other processing, for example (FIG. 29: S2903 No.fwdarw.S2911). The other processing is, for example, provision of other functions of the PDA.

  If the comparison results match, then the memory card access control means 2304 determines whether the use condition is “unusable” (use condition = 3) (FIG. 29: S2903 Yes → S2904). ).

  Here, since the use condition is “unusable”, the memory card access control unit 2304 sets the use permission flag 2306 stored in the memory card 120 according to the use condition “unusable”, for example, “0”. "(FIG. 29: S2904 Yes-> S2909). The use permission flag “0” means that the memory card is locked, and means that information in the memory card (except for the main memory card user information) cannot be used (written or read). Note that “0” of the flag may mean that, for example, there is no content in the card and only a free area can be referred to, a hidden file is not shown, or the content is read-only.

  Here, when the use condition is not “unusable”, the memory card access control means 2304 releases the lock of the memory card 120 by changing the use permission flag of the memory card 120 to “1”. The following determination is performed (FIG. 29: S2904 No → S2905 → S2906).

  Subsequently, the memory card access control means 2304 determines whether it is “usable” (use condition = 4) (FIG. 29: S2906). Here, if it is “available”, the process is terminated (FIG. 29: S2906 Yes → End).

  Here, if it is not “usable”, the memory card access control means 2304 further determines whether or not the use condition is “usable only once” (use condition = 2). Here, if “can be used only once”, the removal of the memory card is detected, and when the removal is performed, the use permission flag 2306 is set to “0”, and the memory card is locked (FIG. 29: S2907 Yes → S2908 Yes → S2909). That is, the memory card 120 can be accessed while the memory card 120 is inserted.

  Next, when the use condition is not “use only once”, processing A (S2910) shown in FIG. 30 is further performed (FIG. 29: S2907 No → S2910).

  In the process A, the memory card access control means 2304 first determines whether the use condition is “transfer” (use condition = 0). Here, in the case of “transfer”, the memory card user information writing unit 2305 acquires the device user information 101 via the device user information acquisition unit 102, and the main memory card user information 121 is stored in the device user information 101. The contents are rewritten (FIG. 30: S3001 Yes → S3002 → S3003). Thereby, the memory card 120 belongs to the user of the PDA 2301.

  Further, when the determination result is not “transfer”, the memory card access control means 2304 determines whether the use condition is “only one day” (use condition = 1) (FIG. 30: S3001 No → S3004).

  Here, when the determination result is “only one day”, a timer (not shown) is started, and when one day has elapsed, the memory card access control means 2304 sets the use permission flag to “0” to thereby set the memory card. Is locked (FIG. 30: S3004 Yes → S3005 → S3006 Yes → S3007). If the determination result is not “one day only”, the memory card is locked by immediately setting the use permission flag to “0” (FIG. 30: S3004 No → S3007). Note that the above weak security may be applied instead of the lock.

  Thereafter, when each processing is completed, the PDA 2301 displays a display 3304 according to the use permission as shown in FIG. 33B, for example.

  For example, by giving a numerical value to “only one day”, for example, permission can be given in units of time. In addition, for example, the access control means counts the number of times the memory card is inserted / removed, thereby managing the number of times the memory card can be used. The memory card can be used up to a predetermined number of times of insertion / removal. Also good.

  As described above, the memory card access control means controls the access to the memory card based on the information contained in the mail, so that not only the memory card usage status can be grasped in real time, but also the memory card from a remote location. You can control access to

  The memory card reading / writing device, the access method, the program, and the recording medium thereof according to the present invention can identify the owner of the memory card without confirming the contents of the memory card in detail, and are completely secure. Compared to the case where it is not done, it is possible to prevent the information recorded on the memory card from being read inadvertently, so it is useful as a memory card reading / writing device etc. that has a function to determine the owner of the memory card It is.

1 is a schematic functional block diagram when a PDA is used as a memory card reading / writing device according to the present invention. The image figure at the time of utilizing a some memory card with a some memory card reading / writing apparatus. 5 is a flowchart showing processing of the memory card reading / writing device according to the first embodiment. The figure which shows the structure of the apparatus user information in Embodiment 1, main memory card user information, and sub memory card user information. A table showing the comparison results. The figure which shows the structure of memory card content list information and file list information. The figure which shows the specific example of apparatus user information containing apparatus user information and an e-mail address. The figure which shows the specific example of main memory card user information including main memory card user information and an e-mail address. It is a display example which shows notification (warning) and memory card content list information. The figure which shows the specific example of memory card content list information. The figure which shows the image by which the inside of a memory card is divided | segmented into plurality. The flowchart which shows the process at the time of the inside of a memory card being divided | segmented into plurality. The flowchart which shows the process of the memory card reading / writing apparatus at the time of log | history information creation. The figure which shows the structure of memory card user information and log | history information. The figure which shows the specific example of memory card user information and log | history information. The figure which shows the structure of memory card user information and content browsing information. The figure which shows the specific example of log | history information and content browsing information. The example of a display which shows a display (warning), the display of the historical information containing content browsing information, and the display at the time of backlight-off. FIG. 4 is a schematic functional block diagram of a memory card reading / writing device according to a second embodiment. 9 is a flowchart showing processing of the memory card reading / writing device according to the second embodiment. The example of a display which requires input of a new user ID and a new user name. FIG. 9 is a second flowchart showing processing of the memory card reading / writing device according to the second embodiment. FIG. 10 is a schematic functional block diagram of a memory card reading / writing device (use permission receiving side) in a third embodiment. 10 is a flowchart showing processing of the memory card reading / writing device according to the third embodiment. The figure which shows the structure of mail transmission information, and its specific example. FIG. 10 is a schematic functional block diagram of a memory card reading / writing device (use permission transmission side) in a third embodiment. An example of displaying mail related to memory card usage information 9 is a flowchart showing processing of a memory card reading / writing device (use permission transmission side) in the third embodiment. FIG. 14 is a first flowchart showing processing of the memory card reading / writing device (use permission receiving side) in the third embodiment. FIG. 10 is a second flowchart showing processing of the memory card reading / writing device (use permission receiving side) in the third embodiment. The figure which shows the table of a structure of a use permission information, a specific example, and use conditions. The figure which shows the structure and specific example of mail transmission information. The figure which shows the example of a display of a use permission registration screen and a memory card use permission certificate.

Explanation of symbols

100 Memory card reader / writer (PDA)
DESCRIPTION OF SYMBOLS 101 Device user information 102 Device user information acquisition means 103 Memory card user information acquisition means 104 User information comparison means 105 Output means 106 Memory card content list information acquisition means 107 History information writing means 108 Storage means 120 Memory card 121 Main memory card user Information 122 History information 123 Memory card contents list information

Claims (16)

In a memory card reader / writer that can access data recorded in a memory card,
Storage means for storing device user information for identifying a user of the memory card reading / writing device;
Device user information acquisition means for acquiring the device user information from the storage means;
Memory card user information acquisition means for acquiring main memory card user information for identifying a main user of the memory card from the memory card;
User information comparing means for comparing the device user information with the main memory card user information and outputting the comparison result;
Output means for performing a predetermined output based on the comparison result ;
Memory card content list information acquisition means for acquiring information indicating a content list of data stored in the memory card;
With
The output means outputs information indicating a content list of the data acquired by the memory card content list information acquisition means when the comparison result is coincident,
When the comparison result does not match, the memory card outputs information indicating the mismatch and outputs information indicating a content list of the data acquired by the memory card content list information acquisition unit Reading / writing device. Further, when the comparison result is coincident, user information generating means for receiving input of new main memory card user information;
The memory card reading / writing device according to claim 1, further comprising: memory card user information writing means for writing the inputted new main memory card user information to the memory card. The user information generation means is a sub memory card user information for identifying the user of the memory card, which is different from the main memory card user information acquired by the memory card user information acquisition means. 3. The memory card reading / writing device according to claim 2 , wherein the memory card reading / writing device is selectively inputted.   3. The memory card reading / writing device according to claim 2, wherein the output means outputs information of a main user of the memory card when the comparison result does not match. When the memory card is divided into a plurality of areas, and each area is associated with memory card user information that is the main user information for each area,
The user information comparison means compares the device user information with the memory card user information for each area,
The memory card content list information acquisition means acquires information indicating a data content list from the area associated with the memory card user information with the matching result,
2. The memory card reading / writing device according to claim 1, wherein the output means outputs information indicating a content list of data acquired by the memory card content list information acquisition means.   2. The memory card reading / writing device according to claim 1, further comprising history information writing means for writing history information composed of predetermined information including the device user information to the memory card when the comparison result does not match. Writing device. The memory card reading / writing device according to claim 6 , wherein the history information further includes information related to accessed contents in the memory card. Furthermore, it comprises a memory card content list information acquisition means for acquiring information indicating a content list of data stored in the memory card,
The output means outputs information indicating that a history of access to the memory card is created,
7. The memory card reading / writing unit according to claim 6 , wherein the history information writing unit writes the history information after the memory card content list information acquiring unit acquires information indicating a content list of data stored in the memory card. Writing device.   The memory card reading / writing device according to claim 1, further comprising a function restricting unit that performs processing that causes a decrease in function of the memory card reading / writing device based on the comparison result. The memory card user information acquisition means acquires sub memory card user information for identifying a user of the memory card different from the main memory card user information from the memory card,
2. The memory card reading / writing device according to claim 1, wherein the user information comparing means compares the device user information with the sub memory card user information and outputs the comparison result.   2. The memory card reading / writing according to claim 1, wherein the output means is mail sending means for sending a mail to an e-mail address included in the main memory card user information when the comparison result does not match. apparatus. The memory card reading / writing device according to claim 11 , wherein the mail includes information of a user of the memory card reading / writing device. In addition to GPS (Global Positioning System),
The memory card reading / writing device according to claim 12 , wherein the user information includes current position information obtained from the GPS. Further, a mail receiving means for receiving a mail and acquiring device user information for identifying a user of the counterpart device from the received mail;
User information comparing means for comparing the apparatus user information acquired from the received mail with the main memory card user information and outputting the comparison result;
The memory card reading / writing device according to claim 1, further comprising: an access control unit that controls access to the memory card based on the comparison result. 15. The memory card reading / writing device according to claim 14 , wherein the access control means controls access to the memory card based on a use condition included in the mail. 16. The memory card reading / writing device according to claim 15 , wherein the access control means manages a usable period of the memory card based on the use condition.

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