JP2013020565A - Memory system, memory device, and operation method for memory system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of making it difficult to duplicate application software.SOLUTION: A memory information protection system 1A includes an information processor 10 which executes an application, and a memory device 20A which has a storage unit 210 and is electrically connected to the information processor 10. The information processor 10 has a data acquisition unit 102 which acquires corresponding data used for progress of the application, and a specific information output unit 103 which outputs specific information obtained by using the corresponding data acquired by the data acquisition unit 102. The memory device 20A has a storage control unit 221 which performs storage control for storing the specific information in the storage unit 210. The memory information protection system 1A also has a continuation information acquisition unit 104 which acquires continuation information used for continuing the application on the basis of the stored specific information, and the information processor 10 continues to execute the application by using the continuation information.

Description

  The present invention relates to information protection technology.

  A technique is known in which a memory device storing application software is attached to an information processing device, and the application software stored in the memory device is executed in the information processing device to realize a predetermined function.

  Such a memory device is equipped with a security function in order to prevent duplication of application software. For example, in Patent Document 1, application software is stored in a memory device in an encrypted state, and the information processing device can execute the application software without acquiring key data for decrypting the application software. It is configured not to be able to. Therefore, in Patent Document 1, copying of application software is restricted until appropriate key data is acquired.

JP 2009-258850 A

  However, in Patent Document 1, when key data corresponding to encrypted application software is specified, the application software can be executed, and the application software may be copied without permission. It was.

  Therefore, an object of the present invention is to provide a technique capable of making it difficult to copy application software.

  A first aspect of a memory system according to the present invention includes: an information processing apparatus that executes an application; and a memory device that includes a storage unit and is electrically connected to the information processing apparatus. A data acquisition means for acquiring data used for the progress of the application, and an output means for outputting specific information obtained by using the data acquired by the data acquisition means, wherein the memory device stores the specific information Storage control means for performing storage control to be stored in the storage means, and the memory system includes continuation information acquisition means for acquiring continuation information used for continuing the application based on the stored specific information. And the information processing apparatus continuously executes the application using the continuation information.

  Further, a second aspect of the memory system according to the present invention is the first aspect, wherein the data acquisition unit sequentially acquires data used for application progress according to application progress, and the output The means sequentially outputs specific information obtained from each of the sequentially acquired data.

  Moreover, the 3rd aspect of the memory system which concerns on this invention is the said 1st aspect or the said 2nd aspect, Comprising: The said continuation information acquisition means continues an application using the memorize | stored specific information. By generating continuous application software, the continuous application software is acquired as the continuous information, and the information processing apparatus executes the continuous application software to continuously execute the application.

  A fourth aspect of the memory system according to the present invention is the second aspect, wherein the storage control means determines whether or not the storage order of the specific information input from the information processing apparatus is appropriate. When the storage order is determined to be valid, the specific information is stored in the storage means. When the storage order is determined to be invalid, the specific information is not stored in the storage means.

  A fifth aspect of the memory system according to the present invention is the second aspect, wherein the storage unit of the memory device is stored in the storage unit and continuous application software for continuing the application. A determination value indicating a normal storage order of each specific information to be stored in advance, and the memory device receives an output request of the continuous application software issued from the continuous information acquisition unit and the information processing device. Output control means for performing output control of the continuation application software, wherein the continuation information acquisition means uses each specific information stored in the storage means to indicate a storage order of the specific information. Order data is acquired as the continuation information, and the output control means compares the storage order data with the determination value. To determine whether the storage order of the specific information is valid, and if the storage order of the specific information is determined to be valid, the continuous application software is output, and the storage order of the specific information If it is determined that is not valid, the continuous application software is not output.

  Further, a sixth aspect of the memory system according to the present invention is any one of the first aspect to the fifth aspect, wherein the data acquisition means uses the progress of the application as data used for the progress of the application. Corresponding application software corresponding to the situation and specific data including specific information are sequentially acquired as the application progresses, and the information processing apparatus sequentially executes the corresponding application software included in the corresponding acquired data And proceed with the application.

  Further, a seventh aspect of the memory system according to the present invention is any one of the first aspect to the sixth aspect, wherein the memory device stores data used for application progress, and the data The acquisition means acquires data used for application progress from the memory device.

  The memory device according to the present invention is a memory device electrically connected to an information processing device that executes an application, and the information processing device stores data used for the progress of the application according to the progress of the application. Data acquisition means for acquiring, and output means for outputting specific information obtained using the data acquired by the data acquisition means, wherein the memory device stores the specific information in the storage means. Storage control means for performing storage control to be stored, the information processing apparatus or the memory device, based on the stored specific information, continuation information acquisition means for acquiring continuation information used to continue the application, And the memory device supplies power to an information processing device that continuously executes an application using the continuation information. They are connected to each other.

  An operation method of a memory system according to the present invention is an operation method of a memory system including an information processing apparatus that executes an application and a memory device that is electrically connected to the information processing apparatus. In the information processing apparatus, a step of acquiring data used for the progress of the application, b) a step of outputting specific information obtained using the data acquired in the step a), c) the specific information in the memory device And d) a step of acquiring continuation information used for continuing the application based on the specific information stored in the memory device; and e) a step of continuously executing the application using the continuation information. And have.

  According to the present invention, it is possible to make replication of application software difficult.

It is a figure which shows the external appearance structure of a memory information protection system. It is a figure which shows the operation | movement outline | summary of the memory information protection system which operate | moves as a game system. It is a block diagram which shows the function structure of the memory information protection system which concerns on 1st Embodiment. It is a flowchart which shows operation | movement of the memory information protection system which concerns on 1st Embodiment. It is a figure which shows the acquisition information of corresponding | compatible application software. It is a flowchart which shows the process using continuation information. It is a flowchart which shows the process using continuation information. It is a flowchart which shows the process using continuation information. It is a block diagram which shows the function structure of the memory information protection system which concerns on 2nd Embodiment. It is a flowchart which shows operation | movement of the memory information protection system which concerns on 2nd Embodiment. It is a block diagram which shows the function structure of the memory information protection system which concerns on 3rd Embodiment. It is a flowchart which shows operation | movement of the memory information protection system which concerns on 3rd Embodiment. It is a flowchart which shows the output operation | movement of continuation application software. It is a figure which shows the structure of the memory information protection system which concerns on a modification. It is a figure which shows the structure of the memory information protection system which concerns on a modification.

  Each embodiment will be described below with reference to the drawings. In addition, the element which attached | subjected the same code | symbol in different drawing shall show the same or corresponding element.

<1. First Embodiment>
[1-1. Configuration Overview]
FIG. 1 is a diagram showing an external configuration of a memory information protection system (also simply referred to as “memory system”) 1A.

  As illustrated in FIG. 1, the memory information protection system 1A includes an information processing device 10 and a memory device 20A.

  The memory device 20A stores (stores) application software (application program) for executing a predetermined application on a computer. The memory device 20A has a form such as a card or a cartridge, for example, and is configured to be detachable from the information processing device 10.

  The information processing apparatus 10 sequentially acquires data (corresponding data) corresponding to the progress status of the application from the memory device 20A, and advances the application by sequentially executing application software included in the corresponding data. Further, the information processing apparatus 10 stores specific information obtained from each corresponding data in the memory device 20A. Then, at a predetermined stage after the application progresses, the memory information protection system 1A generates continuation information used to continue the application based on the specific information stored in the memory device 20A, and uses the generated continuation information. To continue the application.

  Such information processing apparatus 10 includes, for example, an information terminal apparatus such as a personal computer (personal computer) or a PDA (Personal Digital Assistant). When the application software stored in the memory device 20A is a game program, the information processing device 10 functions as a game device body such as a stationary game machine or a portable game machine.

  Here, an outline of the operation of the memory information protection system 1A will be described by taking as an example a case where a game program is stored as application software in the memory device 20A and the information processing device 10 functions as a game device main body that executes the game program. To do. FIG. 2 is a diagram showing an outline of the operation of the memory information protection system 1A that operates as a game system.

  Specifically, as shown in FIG. 2, in the first stage of the progress of the game, the information processing apparatus 10 acquires A correspondence data DA corresponding to the first stage from the memory device 20 </ b> A. The A game program PA included in the data is executed to enable the game in the first stage. At this time, the information processing apparatus 10 transfers and stores the A specifying information KA included in the A correspondence data DA to the memory device 20A.

  Next, in the second stage of the progress of the game, the information processing apparatus 10 acquires the E correspondence data DE corresponding to the second stage from the memory device 20A, and acquires the E game program PE included in the E correspondence data DE. Run to enable the game in the second stage. Further, at this time, the information processing apparatus 10 transfers the E specifying information KE included in the E correspondence data DE to the memory device 20A to be stored.

  Similarly, in the third stage of the progress of the game, the information processing apparatus 10 acquires the B correspondence data DB corresponding to the third stage from the memory device 20A, and executes the B game program PB included in the B correspondence data DB. Run to enable the game in the third stage. At this time, the information processing apparatus 10 transfers and stores the B specifying information KB included in the B correspondence data DB to the memory device 20A.

  Then, in the final stage of the progress of the game, the memory information protection system 1A generates the Z game program PZ for the final stage using the specific information KA, KE, KB stored in the memory device 20A, and the Z game The program PZ is executed in the information processing apparatus 10 so that the game in the final stage can be executed.

  As described above, the memory information protection system 1A temporarily stores each piece of specific information obtained from each piece of corresponding data according to the progress status. Then, at the final stage of the game, the stored specific information is used to acquire the Z game program used to execute the final stage game as continuation information. According to such a memory information protection system 1A, since it is not possible to acquire all game data without advancing the game, the concept of advancing the game becomes important, and duplication of the game data becomes difficult.

[1-2. Function block]
Next, the functional configuration of the memory information protection system 1A will be described. FIG. 3 is a block diagram showing a functional configuration of the memory information protection system 1A according to the first embodiment.

  As shown in FIG. 3, the information processing apparatus 10 configuring the memory information protection system 1A includes a control unit 100 and an interface (I / F) 110 for electrically connecting the information processing apparatus 10 to the memory apparatus 20A. And.

  The control unit 100 is configured as a microcomputer, and mainly includes a CPU, a RAM, a ROM, and the like (all not shown).

  The control unit 100 implements various functions by reading a program stored in the ROM and executing the program by the CPU.

  Specifically, the control unit 100 functionally implements the execution control unit 101 by executing a program stored in the ROM.

  The execution control unit 101 controls execution of application software by the CPU. Further, when starting (starting up) an application, the execution control unit 101 reads initial application software for startup from the memory device 20A (for example, the first storage unit 200 of the memory device 20A), and the initial application software The software is executed by the CPU and the application is started.

  Further, in the control unit 100, the data acquisition unit 102, the specific information output unit 103, and the continuation information acquisition are performed by executing the above-described program stored in the ROM or by executing application software on the CPU according to the control of the execution control unit 101. The unit 104 is functionally realized.

  The data acquisition unit 102 has a function of acquiring data corresponding to the application progress status (also referred to as “corresponding data”) from the memory device 20A according to the application progress status. The correspondence data acquired by the data acquisition unit 102 includes application software (corresponding application software) corresponding to the progress of the application and specific information. The corresponding application software is executed by the CPU under the control of the execution control unit 101.

  The specific information output unit 103 has a function of acquiring specific information from the corresponding data acquired by the data acquisition unit 102 and outputting the specific information to the memory device 20A. The specific information is output every time corresponding data including the specific information is acquired.

  The continuation information acquisition unit 104 has a function of acquiring continuation information used to continue the application using the specific information stored in the memory device 20A. Specifically, the continuation information acquisition unit 104 reads specific information from the memory device 20A, and acquires continuation information based on the read specific information.

  On the other hand, the memory device 20A constituting the memory information protection system 1A includes a first storage unit 200 and a second storage unit 210 as a storage unit, and a security unit 220.

  The first storage unit 200 is a non-volatile storage unit such as a mask ROM, and stores a plurality of correspondence data 201 corresponding to the progress of the application. FIG. 3 shows an aspect in which A correspondence data, B correspondence data, C correspondence data, D correspondence data, E correspondence data, and the like are stored as the correspondence data 201. Each of these correspondence data includes corresponding application software and specific information.

  In FIG. 3, for the sake of simplification of explanation, each correspondence data is illustrated in the order of A → B → C..., But the storage order of each correspondence data is random. Is preferred.

  The first storage unit 200 receives the output command for the corresponding data issued from the information processing apparatus 10 and outputs the corresponding data 201 to be output. For example, when the A correspondence data is an output target, the A correspondence data is output, and when the B correspondence data is an output target, the B correspondence data is output.

  Note that the first storage unit 200 is not limited to a mask ROM, and may be a flash memory, an EP-ROM, a hard disk (HD), or the like.

  The security unit 220 includes a storage control unit 221 and a read control unit (output control unit) 222.

  The storage control unit 221 performs storage control in which specific information input from the information processing apparatus 10 is stored in the second storage unit 210.

  The read control unit 222 performs output control of information stored in the second storage unit 210 in accordance with an output command input from the information processing apparatus 10. For example, when the output command input from the information processing apparatus 10 is an output command for specific information, the specific information stored in the second storage unit 210 is output to the information processing apparatus 10.

  The second storage unit 210 is a rewritable nonvolatile storage unit such as a flash memory, and stores specific information input from the information processing apparatus 10 according to the control of the storage control unit 221. FIG. 3 shows an aspect in which A specific information, E specific information, B specific information, and the like are stored as the specific information 211.

  The security unit 220 and the second storage unit 210 function as a duplication prevention unit 230 that prevents duplication of application software used for application execution.

[1-3. Operation of Memory Information Protection System 1A]
Next, the operation of the memory information protection system 1A will be described. FIG. 4 is a flowchart showing the operation of the memory information protection system 1A. In FIG. 4, a flowchart showing the operation of the information processing apparatus 10 is shown on the left side, and a flowchart showing the operation of the memory device 20A is shown on the right side. FIG. 5 is a diagram showing acquisition information of corresponding application software. 6 to 8 are flowcharts showing processing using continuation information.

  Before the operation of the memory information protection system 1A starts, the memory device 20A is mounted on the information processing device 10 and the respective interfaces are electrically connected. Then, in response to the power-on of the information processing apparatus 10, the information processing apparatus 10 is activated and the power is supplied to the memory device 20A to start the operation as a system.

  As shown in FIG. 4, in the information processing apparatus 10, when the power is turned on, the initial control software is read from the memory device 20A by the execution control unit 101 (step SP101).

  In step SP102, the execution control unit 101 causes the CPU to execute initial application software, and an application is started.

  In step SP103, the data acquisition unit 102 acquires the correspondence data 201 stored in the memory device 20A.

  The information of the correspondence data 201 to be acquired first after activation is incorporated in the initial application software. Specifically, the initial application software includes a command for acquiring the corresponding data 201 to be acquired first, and the command for acquiring the corresponding data 201 is issued by executing the initial application software. In response to the acquisition command, the data acquisition unit 102 issues an output command (output request) for the corresponding data 201 to be acquired to the memory device 20A. Receiving the output command, the memory device 20A outputs the correspondence data 201 to be acquired to the information processing device 10. The information processing apparatus 10 temporarily stores the correspondence data 201 acquired in this way in the internal RAM.

  In the next step SP104, the corresponding application software included in the corresponding data 201 acquired in step SP103 is executed by the CPU under the control of the execution control unit 101.

  In step SP105, the specific information output unit 103 outputs the specific information 211 included in the correspondence data 201 to the memory device 20A. The specific information output command is incorporated in the corresponding application software being executed. In other words, a specific information output command is issued by executing the corresponding application software. The specific information output unit 103 receives the output command and outputs the specific information 211 included in the correspondence data 201 to the memory device 20A.

  When an end operation for ending the operation of the information processing apparatus 10 (for example, an operation for turning off the power of the information processing apparatus 10) is executed during the execution of the corresponding application software, the operation of the information processing apparatus 10 ends ( Step SP106).

  If a continuation information acquisition command is issued while the corresponding application software is being executed, the operation process proceeds to step SP108 via step SP107. In step SP108, the continuation information acquisition unit 104 reads the specific information from the memory device 20A, and the continuation information acquisition operation is performed based on the specific information.

  Examples of the continuation information acquired by the continuation information acquisition unit 104 include the following.

  For example, the continuation information acquisition unit 104 may acquire application software as continuation information using each specific information. Specifically, when each piece of specific information read from the memory device 20A is an element of application software, the continuation information acquisition unit 104 generates continuation information by generating application software using each piece of specific information. get. The acquired application software is executed by the CPU under the control of the execution control unit 101.

  When the continuation information acquisition unit 104 acquires continuation information by generating application software, the continuation information acquisition unit 104 can also be expressed as “software generation means”. The application software acquired using the specific information is software that continues the application, and is also referred to as “continuation application software”.

  Further, for example, the continuation information acquisition unit 104 may generate key information as continuation information using each specific information. The key information is used for decrypting the encrypted corresponding data acquired from the memory device 20A.

  Further, for example, the continuation information acquisition unit 104 may generate, as continuation information, acquisition information (acquired application software acquisition information) for acquiring the next application software, that is, continuation application software, using each specific information. .

  As shown in FIG. 5, the acquisition information of continuous application software includes information related to a method of reading continuous application software (also referred to as “read information of continuous application software”). The read information of the continuous application software includes a read address indicating the storage destination of the continuous application software. In addition, when the continuous application software is distributed and stored at a plurality of addresses, in addition to the plurality of read addresses, information regarding the read procedure indicating the read order may be included as read information of the continuous application software. Good.

  Further, the acquisition information of the continuous application software may include information on a generation method of the continuous application software (also referred to as “continuation application software generation information”). Examples of the information related to the generation method of the continuous application software include a decryption key for generating the continuous application software or bit shift information when generating the continuous application software.

  In addition, the information regarding the acquisition method for each of the acquisition information of the continuous application software, the key information, and the continuous application software exemplified as the continuous information may be included in one of the specific information. It may be included in the corresponding application software being executed.

  Returning to the description of the operation (FIG. 4), in step SP109, processing using the acquired continuation information is executed, and the application is continuously executed. Here, the process using the continuation information will be described for each case according to the type of continuation information.

  For example, when the continuation application software is acquired as the continuation information, the process shown in FIG. 6 is executed.

  Specifically, in step SP301, the continuation application software acquired as continuation information is executed by the CPU according to the control of the execution control unit 101. Thereby, continuous execution of the application is realized.

  If the end operation for ending the operation of the information processing apparatus 10 is executed during the execution of the continuous application software, the operation of the information processing apparatus 10 is ended (step SP302).

  For example, when the key information is acquired as the continuation information, the process shown in FIG. 7 is executed.

  Specifically, in step SP401, the data acquisition unit 102 acquires the correspondence data 201 stored in the memory device 20A. The acquisition of the correspondence data 201 is started in response to the issuance of the acquisition command of the correspondence data incorporated in the correspondence application software currently being executed. It is assumed that the corresponding data acquired here is encrypted.

  In the next step SP402, the corresponding data acquired in step SP401 is decrypted using the key information acquired as the continuation information.

  In step SP403, the corresponding application software included in the decrypted corresponding data (the corresponding application software corresponds to the continuation application software) is executed by the CPU under the control of the execution control unit 101. Thereby, continuous execution of the application is realized.

  When the end operation for ending the operation of the information processing apparatus 10 is executed during the execution of the continuous application software, the operation of the information processing apparatus 10 is ended (step SP404).

  In step SP401, the mode of acquiring the corresponding data has been exemplified. However, the type of the acquired data is not limited to the corresponding data, and may be the continuous application software itself. When the continuous application software itself is acquired, the continuous application software is encrypted.

  For example, when the acquisition information of the continuation application software is acquired as the continuation information, the process as shown in FIG. 8 is executed.

  Specifically, in step SP501, the data acquisition unit 102 acquires continuous application software from the memory device 20A using the acquisition information of the continuous application software.

  In the next step SP502, the acquired continuous application software is executed by the CPU under the control of the execution control unit 101. Thereby, continuous execution of the application is realized.

  When the end operation for ending the operation of the information processing apparatus 10 is executed during the execution of the continuous application software, the operation of the information processing apparatus 10 ends (step SP503).

  Thus, in the process using continuation information (step SP109), the continuation of the application is realized by using the continuation information.

  Returning to FIG. 4, when the operation of the information processing apparatus 10 is continued (step SP106) and the acquisition operation of the continuation information is not performed (step SP107), the operation process is shifted again to step SP103. In step SP103, new correspondence data is acquired from the memory device 20A, and processing using the new correspondence data (each processing from step SP104 to step SP107) is executed. That is, each process from step SP103 to step SP107 is repeatedly executed until the application progresses and the situation where continuation information is required.

  In this way, the information processing apparatus 10 sequentially acquires the corresponding data used for the progress of the application and continuously executes the application until the application progresses to a situation requiring continuation information, and the identification included in the corresponding data. Output information sequentially. Then, when the application progresses, the information processing apparatus 10 acquires the continuation information using the specific information stored in the memory device 20A and causes the application to be continuously executed.

  On the other hand, in the memory device 20A, when power supply is started, an operation corresponding to step SP101 of the information processing device 10 is executed, and initial application software is output from the first storage unit 200 (step SP201).

  In step SP202, a command (input command) input from the information processing apparatus 10 to the memory device 20A is analyzed. If the input command is an output command for corresponding data, the operation process moves to step SP203, and if the input command is an output command for specific information, the operation process moves to step SP205.

  In step SP203 which is shifted when the input command is an output command of corresponding data, the operation corresponding to step SP103 of the information processing apparatus 10 is executed, and the output target corresponding data 201 is output from the first storage unit 200. The

  Then, in the next step SP204, the operation corresponding to step SP105 of the information processing apparatus 10 is executed, and the specific information 211 output from the information processing apparatus 10 is the second according to the control of the storage control unit 221 of the security unit 220. It is stored in the storage unit 210.

  In step SP205, which is shifted when the input command is an output command for specific information, an operation corresponding to step SP108 of the information processing apparatus 10 is executed, and the specific information is stored in the memory device according to the control of the read control unit 222. Output from 20A.

  When the operation of step SP204 or the operation of step SP205 ends, the operation process moves to step SP202.

  Thereafter, the same processing as described above is executed. That is, in step SP202, an input command is analyzed, and when an output command of corresponding data is input, the operation process moves to step SP203. In step SP203, the corresponding data is output. In step SP204, the specific information output from the information processing apparatus 10 is stored in the second storage unit 210.

  When an output command for specific information is input to the memory device 20A, the operation process proceeds from step SP202 to step SP205, and in step SP205, the specific information is output from the memory device 20A.

  In this manner, in the memory device 20A, the processes from step SP202 to step SP205 are executed in accordance with the operation of the information processing apparatus 10 until the application is terminated.

  As described above, the memory information protection system 1 </ b> A includes the information processing apparatus 10 that executes an application and the memory device 20 </ b> A that includes the storage unit 210 and is electrically connected to the information processing apparatus 10. The information processing apparatus 10 includes a data acquisition unit 102 that acquires correspondence data used for application progress, and a specific information output unit 103 that outputs specific information obtained using the correspondence data acquired by the data acquisition unit 102. The memory device 20A includes a storage control unit 221 that performs storage control to store specific information in the storage unit 210. Furthermore, the memory information protection system 1A includes a continuation information acquisition unit 104 that acquires continuation information used to continue the application based on the stored specific information. The information processing apparatus 10 uses the continuation information. Continue to run the application.

  As described above, the memory information protection system 1A stores the specific information obtained using the correspondence data in the memory device 20A while acquiring the correspondence data used for the progression of the application according to the progression of the application. And since memory information protection system 1A is the composition which acquires continuation information used in order to continue an application based on specific information memorized by memory device 20A, without carrying out an application, it is in memory device 20A. The continuation information used to continue the application cannot be acquired simply by extracting the stored data. Therefore, it becomes possible to prevent an unauthorized duplicator's action to extract only the data stored in the memory device 20A and copy the application software, thereby making it difficult to copy the application software.

  In the memory information protection system 1A, the information processing apparatus 10 sequentially acquires corresponding application software corresponding to the progress of the application according to the progress of the application. Then, the corresponding application software acquired sequentially is sequentially executed to realize continuous execution of the application. For this reason, unless the application is advanced, the correct application software in the order of the application cannot be obtained sequentially. Therefore, simply extracting the data stored in the memory device 20A can duplicate the application software. Becomes difficult.

<2. Second Embodiment>
Next, a second embodiment will be described. In the memory information protection system 1B according to the second embodiment, the storage control of the specific information in the memory device is performed in consideration of the storage order of the specific information. The memory information protection system 1B of the second embodiment has substantially the same structure and function as the memory information protection system 1A of the first embodiment, except that the storage order of the specific information is taken into account when storing the specific information. doing. For this reason, in the memory information protection system 1B, portions common to the memory information protection system 1A are denoted by the same reference numerals and description thereof is omitted.

[2-1. Constitution]
As described above, in the memory information protection system 1B of the present embodiment, the storage control of the specific information in the memory device is performed in consideration of the storage order of the specific information. Hereinafter, the memory information protection system 1B that performs such storage control will be described in detail. FIG. 9 is a block diagram showing a functional configuration of the memory information protection system 1B according to the second embodiment.

  As shown in FIG. 9, the memory device 20 </ b> B constituting the memory information protection system 1 </ b> B stores the storage order information 212 in the second storage unit 210. The storage order information 212 is information related to the storage order (storage order) of specific information in the memory device 20B, which is determined according to the progress of the application, and is stored in advance in the second storage unit 210 when the memory device 20B is manufactured. ing. The storage order information 212 is output to the security unit 220 according to the control of the storage control unit 221 of the security unit 220.

  The security unit 220 includes a storage control unit 221 and a read control unit 222.

  The storage control unit 221 performs storage control in which specific information input from the information processing apparatus 10 is stored in the second storage unit 210.

  Specifically, the storage control unit 221 grasps the specific information input from the information processing apparatus 10. Then, the storage control unit 221 determines whether or not the storage order of the specific information input from the information processing apparatus 10 is correct (whether it is appropriate) based on the storage order information 212 obtained from the second storage unit 210. To do. If the storage order of the specific information is correct, the storage control unit 221 causes the second storage unit 210 to store the input specific information. On the other hand, if the storage order of the specific information is not correct, the storage control unit 221 discards the specific information without storing the input specific information.

[2-2. Operation]
Here, the operation of the memory information protection system 1B will be described. FIG. 10 is a flowchart showing the operation of the memory information protection system 1B. In FIG. 10, a flowchart showing the operation of the information processing apparatus 10 is shown on the left side, and a flowchart showing the operation of the memory device 20B is shown on the right side.

  When the memory device 20B is attached to the information processing apparatus 10 and the information processing apparatus 10 is powered on, the operation of the system is started.

  Specifically, as illustrated in FIG. 10, in the information processing apparatus 10, each operation process (step SP101 to step SP109) described in the first embodiment is executed, and the information processing apparatus 10 of the first embodiment and A similar operation is performed.

  On the other hand, in the memory device 20B, when power supply is started, an operation corresponding to step SP101 of the information processing device 10 is executed, and initial application software is output from the first storage unit 200 (step SP211).

  In the next step SP212, a command (input command) input from the information processing apparatus 10 to the memory device 20B is analyzed. When the input command is a corresponding data output command, the operation process proceeds to step SP213. When the input command is a specific information output command, the operation process proceeds to step SP217.

  In step SP213, which is shifted when the input command is an output command of corresponding data, the operation corresponding to step SP103 of the information processing apparatus 10 is executed, and the output target corresponding data 201 is output from the first storage unit 200. The

  In the next step SP214 to step SP216, an operation corresponding to step SP105 of the information processing apparatus 10, that is, a storage operation of specific information is executed.

  Specifically, in step SP214, the storage control unit 221 grasps the specific information input from the information processing apparatus 10.

  In the next step SP215, the storage control unit 221 determines whether the storage order of the specific information is appropriate (appropriate). The validity determination of the storage order of the specific information is obtained from, for example, the storage history information (storage history information) regarding the specific information already stored and the specific information specified as the storage target in step SP214 and the second storage unit 210. This can be done by comparing with the storage order information 212. When determining the validity of the storage order using the storage history information, the security unit 220 updates (generates) the storage history information and stores it in the second storage unit 210 each time the specific information is stored. Just keep it.

  When it is determined in step SP215 that the storage order of the specific information is appropriate, the operation process moves to step SP216. In step SP216, the storage control unit 221 stores the specific information in the second storage unit 210. When the storage of the specific information is finished, the operation process moves to step SP212.

  On the other hand, if it is determined in step SP215 that the storage order of the specific information is not valid, the operation process moves to step SP212 without passing through step SP216. That is, when it is determined that the storage order of the specific information is not appropriate, the operation process is shifted to step SP212 without storing the input specific information.

  In step SP217, which is shifted when the input command is an output command for specific information, an operation corresponding to step SP108 of the information processing apparatus 10 is executed, and the specific information is stored in the memory device according to the control of the read control unit 222. 20B. When the output of the specific information ends, the operation process moves to step SP212.

  Thereafter, the same repetition process as described above is executed. That is, in step SP212, the input command is analyzed, and when the corresponding data output command is input, the operation process proceeds to step SP213. In step SP213, the corresponding data is output, and in steps SP214 to SP216, the storage operation of the specific information output from the information processing apparatus 10 is executed.

  When an output command for specific information is input to the memory device 20B, the operation process proceeds from step SP212 to step SP217, and in step SP217, the specific information is output from the memory device 20B.

  As described above, in the memory device 20B, the processes from step SP212 to step SP217 are executed in accordance with the operation of the information processing apparatus 10 until the application ends.

  As described above, the memory device 20B of the memory information protection system 1B monitors whether the storage order of the specific information is correct. If the storage order is correct, the memory device 20B stores the input specific information and the storage order is correct. If not, the input specific information is not stored. According to this, since the specific information cannot be input to the memory device 20B in the correct order unless the application is advanced in the correct order, the specific information used for acquiring the continuation information without causing the application to proceed. It cannot be stored in the memory device 20B. Therefore, in order to acquire continuation information and continue the application, it is necessary to advance the application. Therefore, without executing the application, only the data stored in the memory device 20B is extracted and the application software is extracted. It becomes possible to prevent the act of unauthorized duplicators who try to duplicate

<3. Third Embodiment>
Next, a third embodiment will be described. In the memory information protection systems 1A and 1B according to the first and second embodiments, the information processing apparatus 10 has the continuation information acquisition unit 104 that acquires the continuation information. However, the memory device 20A (20B) has the continuation information. The aspect which has an acquisition part may be sufficient.

  In the third embodiment, an example of the memory information protection system 1C in the case where the memory device 20C includes a continuation information acquisition unit is illustrated. In the memory information protection system 1C, parts common to the memory information protection system 1A are denoted by the same reference numerals and description thereof is omitted.

[3-1. Constitution]
As described above, in the memory information protection system 1C of the present embodiment, the memory device 20C has the continuation information acquisition unit, and the continuation information is acquired in the memory device 20C. FIG. 11 is a block diagram showing a functional configuration of a memory information protection system 1C according to the third embodiment.

  As shown in FIG. 11, the memory device 20 </ b> C constituting the memory information protection system 1 </ b> C stores the continuation application software 213 and the determination value 214 in the second storage unit 210.

  The continuation application software 213 is software that continues the application, and is stored in advance in the second storage unit 210 in the memory information protection system 1C.

  The determination value 214 is a value (predetermined value) indicating the normal storage order (correct storage order) of the specific information in the memory device 20C, and is stored in advance in the second storage unit 210. The determination value 214 is used to determine whether or not the storage order of the specific information in the memory device 20C is correct. The determination value 214 is sent to the security unit 220 according to the control of the read control unit 222 of the security unit 220. Is output.

  The security unit 220 includes a storage control unit 221, a read control unit 222, and a continuation information acquisition unit 223.

  The storage control unit 221 performs storage control in which specific information input from the information processing apparatus 10 is stored in the second storage unit 210. Note that the specific information stored in the second storage unit 210 includes information related to the storage time (storage time) when the specific information is stored. Information regarding the storage time is added by the specific information output unit 103 when output from the information processing apparatus 10 or by the storage control unit 221 when storing the specific information in the second storage unit 210.

  The read control unit 222 performs output control of information stored in the second storage unit 210 in accordance with an output command input from the information processing apparatus 10. The read control unit 222 according to the present embodiment performs output control of the continuous application software stored in the second storage unit 210 according to the output command of the continuous application software.

  The continuation information acquisition unit 223 has a function of acquiring continuation information used to continue the application using the specific information stored in the memory device 20C.

  Specifically, the continuation information acquisition unit 223 reads the specific information from the second storage unit 210 and acquires the continuation information based on the read specific information. The continuation information acquired here is information reflecting the storage order of each specific information stored in the second storage unit 210, and can be calculated by the following method, for example.

  That is, the continuation information acquisition unit 223 specifies the storage order of the specific information by comparing the storage times included in the specific information. Then, the continuation information is obtained by multiplying each specific information by a value indicating the storage order (for example, 1, 2, 3...) And adding the upper 1 byte of the value after the multiplication. The continuation information calculated in this way is data indicating different values depending on the storage order, and is also referred to as “storage order data” or “storage order value”.

[3-2. Operation]
Here, the operation of the memory information protection system 1C will be described. FIG. 12 is a flowchart showing the operation of the memory information protection system 1C. In FIG. 12, a flowchart showing the operation of the information processing apparatus 10 is shown on the left side, and a flowchart showing the operation of the memory device 20C is shown on the right side. FIG. 13 is a flowchart showing the output operation of the continuous application software.

  When the memory device 20C is attached to the information processing apparatus 10 and the information processing apparatus 10 is powered on, the operation of the system is started.

  Specifically, as shown in FIG. 12, in the information processing apparatus 10, the execution control unit 101 reads initial application software from the memory device 20C (step SP111).

  In step SP112, as in step SP102 described above, the execution control unit 101 causes the CPU to execute initial application software, and an application is started.

  In step SP113, the corresponding data 201 stored in the memory device 20C is acquired by the data acquisition unit 102 as in step SP103 described above.

  In the next step SP114, the corresponding application software included in the corresponding data 201 acquired in step SP113 is executed by the CPU under the control of the execution control unit 101, as in step SP104 described above.

  In step SP115, as in step SP112 described above, the specific information output unit 103 outputs the specific information 211 included in the correspondence data 201 to the memory device 20C.

  When an end operation for ending the operation of the information processing apparatus 10 (for example, an operation for turning off the power of the information processing apparatus 10) is executed during the execution of the corresponding application software, the operation of the information processing apparatus 10 is The process ends (step SP116).

  In addition, when an instruction to acquire continuous application software is issued during the execution of the corresponding application software, the operation process proceeds to step SP118 via step SP117.

  In step SP118, the data acquisition unit 102 issues an output command for continuous application software, and the continuous application software is read from the memory device 20C.

  In the next step SP119, the continuous application software is executed by the CPU under the control of the execution control unit 101. Thereby, continuous execution of the application is realized.

  In this way, the information processing apparatus 10 sequentially acquires the corresponding data used for the progress of the application and continuously executes the application until the application progresses to a situation requiring continuation information, and the identification included in the corresponding data. Output information sequentially. When the application progresses, the information processing apparatus 10 issues an output command of the continuous application software to the memory device 20C and acquires the continuous application software from the memory device 20C. Then, the information processing apparatus 10 continuously executes the application by executing the acquired continuous application software.

  On the other hand, in the memory device 20C, when power supply is started, an operation corresponding to step SP111 of the information processing device 10 is executed, and initial application software is output from the first storage unit 200 (step SP221).

  In step SP222, a command (input command) input from the information processing apparatus 10 to the memory device 20C is analyzed. If the input command is a corresponding data output command, the operation process moves to step SP223, and if the input command is a continuous application software output command, the operation process moves to step SP225.

  In step SP223, which is shifted when the input command is an output command for corresponding data, the operation corresponding to step SP113 of the information processing apparatus 10 is executed, and the output target corresponding data 201 is output from the first storage unit 200. The

  Then, in the next step SP224, the operation corresponding to step SP115 of the information processing apparatus 10 is executed, and the specific information 211 output from the information processing apparatus 10 is changed to the second according to the control of the storage control unit 221 of the security unit 220. It is stored in the storage unit 210.

  In step SP225, which is shifted when the input command is an output command of continuous application software, an output operation of continuous application software corresponding to step SP118 of the information processing apparatus 10 is executed.

  In the output operation of the continuous application software, the operation shown in FIG. 13 is executed.

  Specifically, in step SP601, the continuation information acquisition unit 223 acquires storage order data as continuation information.

  In step SP602, the read control unit 222 compares the storage order data with the determination value to determine whether or not the storage order data matches the determination value.

  If the storage order data matches the determination value, the operation process proceeds to step SP603 on the assumption that the storage order of the specific information is appropriate. In step SP603, the read control unit 222 outputs continuous application software.

  On the other hand, if the storage order data does not match the determination value (if they do not match), the output operation of the continuous application software ends without passing through step SP603, assuming that the storage order of the specific information is not valid. That is, if it is determined that the storage order of the specific information is not correct, the continuous application software is not output.

  As described above, in the output operation of the continuation application software, the continuation information acquisition unit 223 acquires the storage order data as continuation information. Then, the read control unit 222 determines whether the storage order of the specific information is valid using the storage order data. If the storage order is valid, the continuation application software is output and the storage order is not valid. In this case, continuous application software is not output.

  When the operation of step SP224 or the operation of step SP225 ends, the operation process moves to step SP222, and the same processing as described above is repeatedly executed.

  In this way, in the memory device 20C, steps from step SP222 to step SP225 are executed in accordance with the operation of the information processing device 10 until the application is terminated.

  As described above, the memory device 20C of the memory information protection system 1C stores the continuous application software in advance. Then, the memory device 20C acquires continuation information that reflects the storage order of the specific information, and determines whether the storage order of the specific information is correct using the continuation information. If the storage order of the specific information is correct, the continuous application software stored in advance in the memory device 20C is output. If the storage order of the specific information is not correct, the continuous application software is not output.

  According to this, since the specific information cannot be input to the memory device 20C in the correct order unless the application is advanced in the correct order, accurate continuation information cannot be acquired without the application being advanced. Therefore, in order to acquire accurate continuation information and acquire continuation application software, it is necessary to advance the application. Therefore, only the data stored in the memory device 20C is extracted without executing the application. Thus, it is possible to prevent an unauthorized duplicator who tries to copy the application software.

<4. Modification>
Although the embodiments of the present invention have been described above, the present invention is not limited to the contents described above.

  For example, in each of the above-described embodiments, the correspondence data 201 is stored in the first storage unit 200. However, the present invention is not limited to this. FIG. 14 is a diagram illustrating a configuration of a memory information protection system 1D according to a modification. FIG. 15 is a diagram illustrating a configuration of a memory information protection system 1E according to a modification.

  Specifically, as illustrated in FIG. 14, in the memory information protection system 1D according to the modification, the correspondence data 201 is stored in the second storage unit 210 of the memory device 20D. As described above, in the memory device 20A (20B, 20C) of each of the above embodiments, the correspondence data 201 and the initial application software stored in the first storage unit 200 are stored in the second storage unit 210. It may be. In such a memory information protection system 1D, the memory device 20D only needs to include at least the second storage unit 210 as a storage unit.

  Further, as shown in FIG. 15, in the memory information protection system 1E according to the modification, the correspondence data 201 is stored in an external storage device other than the memory device 20E. As described above, in the memory device 20A (20B, 20C) of each of the above embodiments, the correspondence data 201 and the initial application software stored in the first storage unit 200 are stored in an external storage device other than the memory device 20E. It may be a mode to keep. In the memory information protection system 1E, the memory device 20E only needs to include at least the second storage unit 210 as a storage unit.

  In this case, the information processing apparatus 10 acquires corresponding data and initial application software via the network. For example, when the storage device is a server, the information processing apparatus 10 downloads initial application software and desired main data via the Internet.

  In addition, the operation of the security unit 220 in each of the above embodiments may be realized by executing a predetermined program in a CPU to which a ROM and a RAM are connected, or hardware using a logic circuit. The aspect implement | achieved as may be sufficient.

  In each of the above embodiments, each piece of specific information transferred from the information processing device 10 to the memory device 20A (20B, 20C) may be encrypted. Specifically, the specific information output unit 103 of the information processing apparatus 10 performs an encryption process on the specific information when transmitting the specific information to the memory device 20A (20B, 20C). Then, the storage control unit 221 of the memory device 20A (20B, 20C) performs a decoding process on the specific information input from the information processing device 10, and stores the specific information after decoding in the second storage unit 210.

  According to this, it is possible to make it difficult to analyze the specific information transferred between the information processing device 10 and the memory device 20A (20B, 20C), and thus make it difficult to copy the application software.

  Furthermore, the specific information output unit 103 may perform different encryption processing for each specific information. According to this, the analysis of the specific information can be made more difficult.

  Information relating to encryption of each specific information may be included in advance in each corresponding data including the specific information. Information relating to decoding used in the memory device 20A (20B, 20C) may be stored in the second storage unit 210 in advance.

  Moreover, although each said embodiment illustrated the aspect in which the correspondence data 201 contained the specific information 211, it is not limited to this. Specifically, a hash value may be calculated by applying a hash function to the correspondence data 201, and the hash value may be used as the specific information 211. When the hash value is used as the specific information 211 in this way, the continuation information acquisition unit 104 acquires, for example, key information or acquisition information of continuation application software as continuation information.

  Thus, by using the specific information 211 as a hash value, it becomes difficult to analyze the specific information itself, so that it is difficult to copy application software.

  Note that the continuation information may include a parameter for referring to a look-up table used for specifying the read address of the storage destination of the continuation application software. In this case, the continuation information acquisition unit 104 acquires a parameter using the hash value and refers to the lookup table using the parameter, thereby specifying the read address of the storage destination of the continuation application software.

  Moreover, although each said embodiment illustrated the aspect which acquires continuation information in the last stage of the progress of an application, it is not limited to this. Specifically, the continuation information may be acquired at an intermediate stage of the application progress. Moreover, it is good also as an aspect which acquires continuation information in multiple times in the progress state of an application.

  In the second embodiment, if it is determined in step SP215 (FIG. 10) that the storage order of the specific information is not valid, the operation process is transferred to the next process without storing the input specific information. Although it was made to transfer, it is not limited to this. Specifically, when it is determined that the storage order of the specific information is not appropriate, the progress of the application may be stopped by stopping the output of the corresponding data thereafter.

1A, 1B, 1C, 1D, 1E Memory information protection system (memory system)
DESCRIPTION OF SYMBOLS 10 Information processing apparatus 20A, 20B, 20C, 20D, 20E Memory apparatus 100 Control part 101 Execution control part 102 Data acquisition part 103 Specific information output part 104,223 Continuation information acquisition part 200 1st memory | storage part 201 Corresponding data 210 2nd memory | storage Unit 211 specific information 212 storage order information 213 continuation application software 214 judgment value 220 security unit 221 storage control unit 222 read control unit (output control unit)
230 Duplication prevention part

Claims (9)

A memory system,
An information processing apparatus for executing an application;
A memory device having storage means and electrically connected to the information processing device;
With
The information processing apparatus includes:
Data acquisition means for acquiring data used for application progress;
Output means for outputting specific information obtained using the data obtained by the data obtaining means;
Have
The memory device includes:
Storage control means for performing storage control for storing the specific information in the storage means;
Have
The memory system includes:
Continuation information acquisition means for acquiring continuation information used to continue the application based on the stored specific information;
Have
The information processing apparatus is a memory system that continuously executes an application using the continuation information. The data acquisition means sequentially acquires data used for the progress of the application according to the progress of the application,
The memory system according to claim 1, wherein the output unit sequentially outputs specific information obtained from the sequentially acquired data. The continuation information acquisition means acquires the continuation application software as the continuation information by generating continuation application software that continues the application using the stored specific information,
The memory system according to claim 1, wherein the information processing apparatus executes the continuous application software to continuously execute the application.   The storage control unit determines whether or not the storage order of the specific information input from the information processing apparatus is valid. When the storage control unit determines that the storage order is valid, the storage control unit stores the specific information in the storage unit. The memory system according to claim 2, wherein the specific information is not stored in the storage unit when it is determined that the storage order is not valid. The storage means of the memory device includes:
Continuous application software to continue the application, and
A determination value indicating a normal storage order of each specific information to be stored in the storage means;
Is stored in advance,
The memory device includes:
The continuation information acquisition means;
An output control means for receiving an output request of the continuous application software issued from the information processing apparatus and performing output control of the continuous application software;
Further comprising
The continuation information acquisition means acquires, as the continuation information, storage order data indicating the storage order of each specific information using each specific information stored in the storage means,
The output control means determines whether or not the storage order of the specific information is appropriate by comparing the storage order data and the determination value, and the storage order of the specific information is appropriate. 3. The memory system according to claim 2, wherein when the determination is made, the continuous application software is output, and when it is determined that the storage order of the specific information is not valid, the continuous application software is not output. The data acquisition means sequentially acquires corresponding data including corresponding application software corresponding to the progress status of the application and specific information as data used for the progress of the application according to the progress of the application,
The memory system according to claim 1, wherein the information processing apparatus sequentially executes corresponding application software included in corresponding data that is sequentially acquired to advance the application. The memory device stores data used for application progress,
The memory system according to claim 1, wherein the data acquisition unit acquires data used for progress of an application from the memory device. A memory device that is electrically connected to an information processing device that executes an application,
The information processing apparatus includes:
Data acquisition means for acquiring data used for application progress according to application progress;
Output means for outputting specific information obtained using the data obtained by the data obtaining means;
Have
The memory device includes:
Storage means;
Storage control means for performing storage control for storing the specific information in the storage means;
Have
The information processing device or the memory device is
Continuation information acquisition means for acquiring continuation information used to continue the application based on the stored specific information;
Have
The memory device is electrically connected to an information processing device that continuously executes an application using the continuation information. An operation method of a memory system including an information processing device for executing an application and a memory device electrically connected to the information processing device,
a) in the information processing apparatus, obtaining data used for application progress;
b) outputting specific information obtained using the data acquired in the step a);
c) storing the specific information in the memory device;
d) obtaining continuation information used to continue the application based on the specific information stored in the memory device;
e) continuously executing the application using the continuation information;
A method for operating a memory system comprising:

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