JP5163381B2 - Information processing system, originality management server device, content management server device, information processing method of originality management server device, information processing method of content management server device, program, and recording medium - Google Patents

Description

  The present invention relates to an information processing system, an originality management server device, a content management server device, an information processing method for an originality management server device, and an information processing method for managing the originality of content and enabling tracking of the branching of the content management server device. The present invention relates to an information processing method, a program, and a recording medium.

  Conventionally, it is common to digitize and manage documents handled by companies, and various document management systems are used. Since electronic documents can be easily duplicated or altered, document management systems that focus on guaranteeing the originality have been devised to prevent them.

For example, Patent Document 1 proposes a technique for guaranteeing the originality of a document composed of a plurality of contents by using an encryption technique.
JP 2001-147898 A

  Many of the conventional document management systems have functions that make it possible to prevent fraud in document management operations by preventing the copying and falsification of electronic documents, or by leaving a history of those documents as a trail. I have.

  However, in actual business, “document duplication” is very effective as a backup application, and depending on the business, it may be necessary to constantly update the document. In such a business, rather than preventing duplication and falsification, being able to properly grasp the “branch of documents” such as duplication and deletion contributes to the productivity improvement of the document management business. This applies not only to document management work but also to content management work in general.

  The present invention has been made in view of such circumstances, and an information processing system, an originality management server device, a content management server device, and an originality management server that manage originality with respect to content and that can track the branch of the originality. It is an object to provide an information processing method for an apparatus, an information processing method for a content management server apparatus, a program, and a recording medium.

The present invention is an information processing system comprising an originality management server device for managing originality of content, and a content management server device that manages content according to information managed by the originality management server device, wherein the original The property management server device includes: an original ID generating means for generating an original ID indicating the original content and a set of the duplicate contents; a copy number generating means for generating an identifier indicating whether the original ID is original or duplicated; Originality information encryption means for encrypting or decrypting the copy number and owner information, original identification means for identifying the original content by the original ID and the copy number, and an original that accepts designation of the original content by the original ID and the copy number Setting means and a list of all duplicate contents for the original ID A copy list acquiring means for acquiring, an owner identifying means for identifying the owner in units of original IDs, and a transition recording means for recording transitions of contents in units of original IDs, wherein the content management server device is characterized by the originality An original ID issuance request means for requesting generation of an original ID to the management server apparatus , a copy number issuance request means for requesting generation of a copy number to the originality management server apparatus , an encrypted original ID and copy number, those comprising a originality information storage means for storing in association with the content, and the transition information transmitting means for transmitting the transition information of the content to the original management server.

  Also, the originality management server apparatus of an information processing system comprising an originality management server apparatus for managing originality of content and a content management server apparatus that manages content according to information managed by the originality management server apparatus. An original ID generating means for generating an original ID indicating the original content and a set of the duplicate contents, a copy number generating means for generating an identifier indicating whether the original ID is original or a copy, and the original ID and the copy number. Originality information encryption means for encrypting or decrypting owner information; original identification means for identifying original content by original ID and copy number; and original setting means for receiving designation of original content by original ID and copy number; , Get a list of all duplicate contents for original ID A duplicate list acquisition means that, those with and owner identification means for identifying its owner in the original ID unit, and a transition recording means for recording the transition of the content in the original ID units.

The content management server apparatus of the information processing system includes an originality management server apparatus for managing originality of content and a content management server apparatus that manages content according to information managed by the originality management server apparatus. An original ID issuance request means for requesting the originality management server apparatus to generate an original ID, a duplicate number issue request means for requesting the originality management server apparatus to generate a duplicate number, and an encrypted original ID. the replication number, but with the originality information storage means for storing in association with the content, and the transition information transmitting means for transmitting the transition information of the content to the original management server.

  An originality management server device of an information processing system comprising an originality management server device for managing originality of content and a content management server device that manages content according to information managed by the originality management server device. An information processing method comprising: an original ID generating step for generating an original ID indicating an original content and a set of the copied content; a replica number generating step for generating an identifier indicating whether the original ID is original or duplicated; and an original ID An originality information encryption step for encrypting or decrypting the copy number and owner information, an original identification step for identifying the original content by the original ID and the copy number, and designation of the original content by the original ID and the copy number Original setting step and original ID A copy list acquisition step for acquiring a list of all copy content, an owner identification step for identifying the owner in units of original IDs, and a transition recording step for recording content transitions in units of original IDs .

Also, information on the content management server device of an information processing system comprising an originality management server device for managing originality of content and a content management server device that manages content according to information managed by the originality management server device A processing method comprising: an original ID issuance request step for requesting the originality management server device to generate an original ID; a duplicate number issuance request step for requesting the originality management server device to generate a duplicate number; and an encryption the original ID and replication number that is, those having the originality information storing step of storing in association with the content, and the transition information transmission step of transmitting the transition information of the content to the original management server.

  Therefore, according to the present invention, since the originality of the content is managed and the branch can be traced, it is possible to appropriately grasp “the branch of the document” such as copying and deletion.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows an example of an information processing system according to an embodiment of the present invention.

  In this figure, a content management server device CV stores content managed by this information processing system, and accepts operations such as copying and deletion of the stored content by the content management client device CC. The device OV stores information for managing the originality of the content stored in the content management client device CC.

  These content management client device CC, content management server device CV, and originality management server device OV are connected to a local area network LAN and can exchange various data with each other. For communication among the content management client device CC, content management server device CV, and originality management server device OV, an appropriate communication application using TCP / IP as a basic protocol is applied.

  For example, for communication between the content management client device CC and the content management server device CV, a communication application in an appropriate Web server / client format is used, so that the user of the content management client device CC uses a Web browser. It is possible to perform various operations on the content management server device CV by using GUI operations. Communication between the content management server device CV and the originality management server device OV is performed using an appropriate communication application.

  These content management client device CC, content management server device CV, and originality management server device OV can be constructed using a data processing device such as a general personal computer device, for example. It is shown in 2.

  In the figure, a CPU (Central Processing Unit) 1 controls the operation of this data processing unit, and a ROM (Read Only Memory) 2 stores programs executed by the CPU 1 at startup and necessary data. A RAM (Random Access Memory) 2 is for configuring a work area of the CPU 2 and the like.

  The character generator 4 is for generating graphic character display data, the clock circuit 5 is for outputting the current date and time information, and the local area network interface circuit 6 is a local processor for this data processing device. The local area network transmission control unit 7 is used for connection to an area network LAN. The local area network transmission control unit 7 exchanges various data with other data terminal devices via the local area network LAN. This is for executing the suite communication control process.

  The magnetic disk device 8 is for storing various data such as various application programs, work data, file data, contents to be stored and managed, and the optical medium driving device 9 is an optical recording medium 10 ( For example, it is for accessing (reading / writing) data of a CD-ROM, DVD, etc., and the screen display device 11 is for displaying a screen for a user to operate this data processing device, The display control unit 12 is for controlling the display content of the screen display device 11.

  The keyboard device 13 is for performing various key operations on the data processing device, and the screen instruction device 14 is for performing operation operations such as indicating an arbitrary point on the screen display device 11. The input control unit 15 is for capturing input information of the keyboard device 13 and the screen instruction device 14.

  The USB host unit 16 is for realizing a USB host function, and is provided with a socket 17 for attaching and detaching various USB devices such as a USB memory MM.

  These CPU 1, ROM 2, RAM 3, character generator 4, clock circuit 5, local area net transmission control unit 7, magnetic disk device 8, optical medium drive device 9, display control unit 12, input control unit 15, and USB host unit 16 is connected to an internal bus 18, and data exchange between these elements is mainly performed via the internal bus 18.

  FIG. 3 shows an example of functional blocks of the originality management server apparatus OV.

  In the figure, an original ID generating means 21 generates an original ID so as to be unique in the originality management server, and stores it in the original management table 22 on the storage device (magnetic disk device 8) together with user information.

  The duplicate number creating means 23 assigns a duplicate number in units of original IDs and stores the information in the branch management table 24 on the storage device. If it is the first numbering in the original ID unit, owner information is set in the corresponding record of the original management table 24.

  The originality information encryption means 25 decrypts and returns the encrypted original ID and copy number information. In addition, the original ID and the copy number information are encrypted and returned.

  The original identification unit 26 passes the encrypted original ID and copy number information to the original information encryption unit 25 and receives the decrypted information. It is checked against the branch management table 24 on the storage device, and the original ID and the copy number are identified and returned. If the original of the original ID has been deleted, this is also returned.

  The original setting means 27 passes the encrypted original ID and copy number information to the original information encryption means 25 and receives the decrypted information. Based on the information, a flag (original flag) indicating the original is set in the corresponding record of the branch management table 24 on the storage device. If the original flag is set in another record of the same original ID, the setting of the other original flag is canceled.

  The copy list acquisition unit 28 passes the encrypted original ID and copy number information to the originality information encryption unit 25 and receives the decrypted information. It is compared with the branch management table 24 on the storage device, and a record having the same original ID and having no original flag set is obtained as a duplicate list.

  The owner identifying unit 29 passes the encrypted original ID and the user information to the original information encryption unit 25 and receives the decrypted information. It is checked against the original management table 22 on the storage device to determine whether or not the user is the owner of the content indicated by the original ID.

  The transition recording unit 30 passes the encrypted original ID, the copy number, and the user information to the originality information encryption unit 25 and receives the decrypted information. Such information and information related to the transition are stored in the transition information table 31 on the storage device. When the transition information indicating content movement is received, the storage destination of the content is set in the corresponding record of the branch management table 24.

  4A shows an example of user information, FIG. 4B shows an example of one record stored in the original management table 22, and FIG. 4C shows storage in the branch management table 24. An example of one record to be recorded is shown, and FIG. 4D shows an example of one record stored in the transition management table 31. FIG. 4E shows an example of one record stored in the original management table 46 described later.

  FIG. 5 shows an example of a functional block diagram of the content management server device CV.

  In the figure, an original ID issuance request means 41 requests the originality management server apparatus OV to issue an original ID.

  The copy number issuing means 42 requests the originality management server device OV to issue a copy number.

  The originality information storage unit 43 passes the received encrypted original ID and copy number to the content management unit 44 in a form associated with the content.

  The transition information transmission unit 45 passes information on new creation, duplication, movement, and deletion of content to the originality management server device OV.

  The content management unit 44 manages the content by the content number, and manages the encrypted original ID / copy number and the content number in association with each other in the original information table 46 on the storage device (magnetic disk device 8).

  FIG. 6 shows an example of processing of this information processing system when creating new content.

  When the user of the content management client device CC instructs the content management server device CV to create a new content, the content management server device CV passes the user information to the originality management server device OV and issues an original ID. Is requested (step 101).

  As a result, the originality management server device OV generates an original ID (step 102), records the original ID and user information in the original management table (step 103), encrypts the original ID, and stores it in the content management server device CV. Pass (step 104).

  Thereby, the content management server device CV passes the encrypted original ID to the originality management server device OV and requests the issuance of a duplicate number (step 105).

  As a result, the originality management server device OV decrypts the original ID (step 106), generates a copy number for the original ID (step 107), and records the original ID and the copy number in the branch management table (step 108). ), And encrypts the copy number and returns it to the content management server device CV (step 109).

  As a result, the content management server device CV passes the encrypted original ID and copy number to the originality management server device OV and requests original setting (step 110).

  As a result, the originality management server device OV decrypts the encrypted original ID and copy number (step 111), scans the corresponding record on the branch management table using the original ID and copy number, and sets the original flag. Is set to ON (step 112).

  Further, the content management server device CV performs content registration by assigning the content number (step 113), and records the encrypted original ID / replication number and the content number in the original information table (step 114).

  Next, the content management server device CV passes the encrypted original ID / copy number and user number to the originality management server device OV and requests a transition record of the “new creation” transition type (step 115).

  Thereby, the originality management server device OV decrypts the original ID / replication number (step 116) and records the original ID, the copy number, the user information, and the transition type in the transition information table (step 117).

  7 and 8 show an example of processing of this information processing system at the time of content reference.

  When the user of the content management client device CC instructs the content management server device CV to refer to the content, the content management server device CV acquires the encrypted original ID / replication number for the content number from the original information table. (Step 201), the encrypted original ID / duplication number is passed to the originality management server apparatus OV to request original identification (Step 202).

  Thereby, the originality management server device OV decrypts the encrypted original ID / duplication number (step 203), and obtains a record group having the same original ID in the branch management table information (step 204).

  Then, it is checked whether or not there is a record in which the original flag is on and the deletion flag is off in the record group (step 205). When the result of step 205 is YES, the copy number of the record is It is checked whether or not the copy number is the same (step 206).

  When the result of step 206 is YES, the originality management server apparatus OV returns that the document exists as an original in the content management server apparatus CV (step 207). Accordingly, the document management server device notifies the user of the result of the original type using the GUI (step 208).

  When the result of step 206 is NO, the originality management server device OV returns that the original exists in the content management server device CV but the content is a copy (step 209). Next, the routine proceeds to step 208.

  On the other hand, when the result of step 205 is NO, the originality management server device OV checks whether there is a record in which the original flag is on and the deletion flag is on in the record group (step 210). ) When the result of step 210 is YES, it is checked whether the copy number of the corresponding record is the same as the copy number (step 211).

  When the result of step 211 is YES, the originality management server device OV returns to the content management server device CV that the document is original but has been deleted (step 212). Next, the routine proceeds to step 208.

  When the result of step 211 is NO or when the result of step 210 is NO, the originality management server device OV indicates that the content is a duplicate in the content management server device CV, and the original does not exist. Is returned (step 213). Next, the routine proceeds to step 208.

  FIG. 9 shows an example of processing of this information processing system at the time of content replication.

  When the user of the content management client device CC instructs the content management server device CV to copy the content, the content management server device CV acquires the encrypted original ID / replication number for the content number from the original information table. (Step 301), the encrypted original ID is transferred to the originality management server apparatus OV and a request for issuing a copy number is made (Step 302).

  Thereby, the originality management server device OV decrypts the original ID (step 303), generates a copy number for the original ID (step 304), and records the original ID and the copy number in the branch management table (step 305). ) Encrypt the copy number and return it to the content management server device CV (step 306).

  As a result, the content management server device CV performs content registration by assigning the content number (step 307), and records the encrypted original ID / replication number and content number in the original information table (step 308), The encrypted original ID / copy number and user information are passed to the originality management server device OV, and a transition record of the “copy” transition type is requested (step 309).

  Thereby, the originality management server device OV decrypts the original ID / replication number (step 310), and records the original ID / replication number, user information, and transition type (replication) in the transition information table (step 311).

  FIG. 10 shows an example of processing of this information processing system when moving content.

  When the user of the content management client device CC instructs the content management server device CV to move the content, the content management server device CV acquires the encrypted original ID / replication number for the content number from the original information table. (Step 401), the encrypted original ID is transferred to the originality management server apparatus OV, and a request for issuing a copy number is made (Step 402).

  Thereby, the originality management server device OV decrypts the original ID (step 403), generates a copy number for the original ID (step 404), and records the original ID and the copy number in the branch management table (step 405). ) And encrypts the copy number and returns it to the content management server device CV (step 406).

  As a result, the content management server device CV registers the content by assigning the content number (step 407), and records the encrypted original ID / replication number and content number in the original information table (step 408), The encrypted original ID / duplication number and user information are passed to the originality management server apparatus OV, and a transition record of the “move” transition type is requested (step 409).

  Thereby, the originality management server device OV decrypts the original ID / replication number (step 410) and records the original ID / replication number, user information, and transition type (movement) in the transition information table (step 411).

  FIG. 11 shows an example of processing of this information processing system at the time of content deletion.

  When the user of the content management client device CC instructs the content management server device CV to delete the content, the content management server device CV acquires the encrypted original ID / replication number for the content number from the original information table. Then, the content management server device CV passes the encrypted original ID / copy number to the originality management server device OV and requests original identification (step 502). As a result, the operations of steps 203 to 213 shown in FIGS.

  Next, the content management server apparatus CV passes the encrypted original ID and the user information to the originality management server apparatus OV and requests owner identification (step 503).

  Thereby, the originality management server device OV decrypts the encrypted original ID (step 504), scans the corresponding record on the original management table using the original ID, and acquires owner information (step 505). .

  Further, the content management server device CV deletes the record on the content and the original management table (step 506), and checks whether the document is the original and the user is the owner (step 507). If the result of step 507 is NO, the process at this time is terminated.

  On the other hand, when the result of step 507 is YES, the content management server apparatus CV passes the encrypted original ID to the originality management server apparatus OV and requests a copy list (step 508).

  Thereby, the originality management server device OV decrypts the encrypted original ID (step 509), scans the branch management table using the original ID, the original ID is the same, the original flag is OFF, and Then, all records whose deletion flag is off are acquired (step 510), the copy numbers of all the acquired records are encrypted (step 511), and the list of encrypted copy numbers is returned to the content management server device CV (step 511). 512).

  As a result, the content management server device CV displays the copy list using the GUI, and accepts the original designation from the user (step 513). Here, it is checked whether one in the replication list is designated (step 514). If the result of step 514 is NO, the processing at this time is terminated.

  On the other hand, when the result of step 514 is YES, the content management server device CV passes the encrypted original ID / copy number corresponding to the designated content to the originality management server device OV and requests original setting. (Step 515).

  As a result, the originality management server device OV decrypts the encrypted original ID / copy number (step 516), scans the corresponding record on the branch management table using the original ID and the copy number, and sets the original flag. Set to ON (step 517).

  Further, the content management server device CV passes the encrypted original ID / replication number to the originality management server device OV and requests a transition record of the “delete” transition type (step 518).

  As a result, the originality management server device OV decrypts the original ID / replication number (step 519), records the original ID / replication number, user information, and transition type in the transition information table (step 520). The branch management table is scanned using the duplicate number, and the deletion flag of the corresponding record is set to ON (step 521).

  12 and 13 show an example of processing of the information processing system at the time of content restoration.

  When the user of the content management client device CC instructs the content management server device CV to restore the content, the content management server device CV selects one content to be restored (step 601) and selects the content from the original information table. The encrypted original ID / replication number for the content number is acquired (step 602), and the content management server apparatus CV passes the encrypted original ID / replication number to the originality management server apparatus OV to request original identification. (Step 603). Thereby, the operations of steps 111 and 112 shown in FIG. 6 are performed.

  Next, the content management server device CV restores the document (step 604). Here, the content management server device CV checks whether or not the original of the document exists (step 605). When the result of step 605 is YES, it checks whether or not the document is original (step 606). When the result of step 606 is YES, the content management server apparatus CV accepts a user selection as to whether or not the restoration target document is an original by using the GUI (step 607).

  Here, when the user selects “original” and the result of step 608 is YES, the content management server apparatus CV passes the encrypted original ID / copy number to the originality management server apparatus OV, and sets the original. Is requested (step 609). Thereby, the operations of steps 111 and 112 shown in FIG. 6 are performed.

  Next, it is checked whether or not all the contents to be restored have been completed (step 610). When the result of step 610 is NO, the process returns to step 601 to return to the selection of unprocessed contents to be restored, and thereafter Execute the process. If the result of step 610 is YES, this process is terminated.

  On the other hand, when the result of step 605 is NO, the content management server device CV checks whether the document is original (step 611). When the result of step 611 is YES, the content management server device CV Then, the encrypted original ID / replication number is transferred to the originality management server apparatus OV, and an original setting is requested (step 609). Thereby, the operations of steps 111 and 112 shown in FIG. 6 are performed. Next, the process proceeds to step 610, and the subsequent processing is executed. If the result of step 611 is NO, the process proceeds to step 610, and the subsequent processing is executed.

  On the other hand, when the result of step 608 is NO, the content management server CV acquires the encrypted original ID / replication number for the content number from the original information table (step 615), and the encrypted original ID. Is sent to the originality management server apparatus OV and a request for issuing a replication number is made (step 616).

  As a result, the originality management server device OV decrypts the original ID (step 617), generates a copy number for the original ID (step 618), and records the original ID and the copy number in the branch management table (step 619). ), Encrypting the copy number and returning it to the content management server device CV (step 620),

  As a result, the content management server device CV records the encrypted original ID / replication number and content number in the original information table (step 620).

The block diagram which showed an example of the information processing system concerning one Example of this invention. The block diagram which showed an example of the structure of the data processor. The block diagram which showed an example of the functional block of the originality management server apparatus OV. User information, an example of one record stored in the original management table 22, an example of one record stored in the branch management table 24, an example of one record stored in the transition management table 31, and an original management table 46 is a schematic diagram showing an example of one record stored in 46. FIG. The block diagram which showed an example of the functional block diagram of the content management server apparatus CV. The flowchart which showed an example of the process of this information processing system at the time of new content creation. The flowchart which showed an example of the process of this information processing system at the time of content reference (following FIG. 8). The flowchart which showed an example of the process of this information processing system at the time of content reference (continuation of FIG. 7). The flowchart which showed an example of the process of this information processing system at the time of content replication. The flowchart which showed an example of the process of this information processing system at the time of content movement. The flowchart which showed an example of the process of this information processing system at the time of content deletion. 14 is a flowchart showing an example of processing of the information processing system at the time of content restoration (following FIG. 13). The flowchart which showed an example of the process of this information processing system at the time of content restoration (continuation of FIG. 12).

Explanation of symbols

CV content management server device OV originality management server device CC content management client device

Claims (8)

An information processing system comprising an originality management server device for managing originality of content and a content management server device that manages content according to information managed by the originality management server device,
The originality management server device includes:
An original ID generating means for generating an original ID indicating a set of the original content and its duplicate content;
A copy number generating means for generating an identifier indicating whether the copy is original or copied in units of original ID;
Originality information encryption means for encrypting or decrypting an original ID, a copy number, and owner information;
Original identification means for identifying original content by original ID and copy number;
Original setting means for accepting specification of original content by original ID and copy number;
Copy list acquisition means for acquiring a list of all copy contents for the original ID;
Owner identification means for identifying the owner in original ID units;
Transition recording means for recording content transitions in units of original IDs,
The content management server device includes:
Original ID issuance request means for requesting the originality management server device to generate an original ID;
A copy number issuance request means for requesting the originality management server device to generate a copy number;
Originality information storage means for storing the encrypted original ID and the copy number in association with the content;
The information processing system characterized in that it comprises a transition information transmitting means for transmitting the transition information of the content to the original management server. The originality management server device of an information processing system comprising an originality management server device for managing originality of content and a content management server device that manages content according to information managed by the originality management server device. ,
An original ID generating means for generating an original ID indicating a set of the original content and its duplicate content;
A copy number generating means for generating an identifier indicating whether the copy is original or copied in units of original ID;
Originality information encryption means for encrypting or decrypting an original ID, a copy number, and owner information;
Original identification means for identifying original content by original ID and copy number;
Original setting means for accepting specification of original content by original ID and copy number;
Copy list acquisition means for acquiring a list of all copy contents for the original ID;
Owner identification means for identifying the owner in original ID units;
An originality management server device comprising transition recording means for recording content transitions in units of original IDs. The content management server device of an information processing system comprising an originality management server device for managing originality of content and a content management server device that manages content according to information managed by the originality management server device,
Original ID issuance request means for requesting the originality management server device to generate an original ID;
A copy number issuance request means for requesting the originality management server device to generate a copy number;
Originality information storage means for storing the encrypted original ID and the copy number in association with the content;
A content management server device comprising transition information transmitting means for transmitting content transition information to the originality management server device. Information processing of the originality management server device of an information processing system comprising an originality management server device for managing originality of content and a content management server device that manages content according to information managed by the originality management server device A method,
An original ID generation step for generating an original ID indicating a set of the original content and its duplicate content;
A copy number generation step for generating an identifier indicating whether the copy is original or copied in units of original ID;
An originality information encryption step for encrypting or decrypting an original ID, a copy number, and owner information;
An original identification step for identifying the original content by the original ID and the copy number;
An original setting step for accepting specification of the original content by the original ID and the copy number;
A copy list acquisition step of acquiring a list of all copy contents for the original ID;
An owner identification step for identifying the owner in original ID units;
An information processing method for an originality management server device, comprising: a transition recording step for recording content transitions in units of original IDs. Information processing method of the content management server device of an information processing system comprising an originality management server device for managing the originality of content and a content management server device for managing content according to information managed by the originality management server device Because
An original ID issuance requesting step for requesting the originality management server device to generate an original ID;
A copy number issuing request step for requesting the originality management server device to generate a copy number;
An originality information storage step for storing the encrypted original ID and the copy number in association with the content;
An information processing method of the content management server apparatus characterized by comprising a transition information transmission step of transmitting transition information of the content to the original management server.   A program for causing a computer to function each step of the information processing method of the originality management server device according to claim 4.   6. A program causing a computer to function each step of the information processing method of the content management server apparatus according to claim 5.   A computer-readable recording medium storing the program according to claim 6 or 7.