Data management system, data management method, server apparatus, receiving apparatus, control program, and computer-readable recording medium recording same

• US 7,979,391 B2
• Filed: 02/14/2006
• Issued: 07/12/2011
• Est. Priority Date: 02/25/2005
• Status: Expired due to Fees

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Kiyama, Jiro, Watanabe, Shuichi
• Primary Examiner(s): Lee; Wilson
• Assistant Examiner(s): SHECHTMAN, CHERYL MARIA
• Application Number:
  US11/666,071
• Publication Number:
  US 20080091687A1
• Time in Patent Office: 1,974 Days
• Field of Search: 707/620, 709/203, 369/30.01
• US Class Current: 707/620
• CPC Class Codes: G06F 16/40 of multimedia data, e.g. slideshows comprising image and additional audio data retrieval of still image data G06F16/50; retrieval of audio data G06F16/60; retrieval of video data G06F16/70
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• CPC Class Codes: Y10S 707/99934 Query formulation, input preparation, or translation
• CPC Class Codes: Y10S 707/99938 Concurrency, e.g. lock management in shared database
• CPC Class Codes: Y10S 707/99942 Manipulating data structure, e.g. compression, compaction, compilation

Abstract

A server apparatus (1) includes a deletion information decision section (104) and a management information update section (105). The deletion information decision section (104) decides a file from among files of an AV content already stored in a storage section (202) of a receiving apparatus (2), the file to be decided being so deleted as to be prevented from being used in the receiving apparatus (2) when files constituting an AV content that is to be newly transmitted is stored in the storage section (202). The management information update section (105) transmits, to the receiving apparatus (2), management information including deletion information for specifying the file thus decided. The receiving apparatus (2) includes a deletion section (205) for deleting, from the storage section (202), the file specified by the deletion information of the management information received from the server apparatus (1).

Claims

1. A server apparatus operably connected to at least one receiving apparatus, the server apparatus comprising:

at least a central processing unit for executing instructions of a control program, and a computer-readable storage medium including memory for storing the control program, the server apparatus further comprising;

file decision means for deciding a first data file from among a plurality of data files which have been already stored in a storage section of the receiving apparatus, the first data file to be decided being deleted or restricted from use in the receiving apparatus when a second data file that is to be newly transmitted to the receiving apparatus is stored in the storage section; and

management information transmitting means for transmitting, to the receiving apparatus, file specifying information for specifying the first data file decided by the file decision means as being subject to deletion or restriction from use,

the receiving apparatus receiving the second data file.

2. The server apparatus as set forth in claim 1, wherein the management information transmitting means transmits, to the receiving apparatus, management information including (i) the file specifying information and (ii) information specifying the second data file.

3. The server apparatus as set forth in claim 1, further comprising:

file selection means for selecting the second data file in accordance with deletion history information received from the receiving apparatus, the deletion history information specifying the first data file deleted from the storage section, wherein the second data file is newly transmitted to the receiving apparatus.

4. A data management system, comprising:

the server apparatus as set forth in claim 1; and

the receiving apparatus for receiving, from the server apparatus, the second data file, the receiving apparatus comprising;

a receiving apparatus storage section for storing the plurality of data files; and

file management means for restricting use of or deleting the first data file which has already been stored in the receiving apparatus storage section and which is specified by file specifying information received from the server apparatus, wherein the file specifying information is for specifying the data file being deleted or restricted from use in the receiving apparatus.

5. The data management system as set forth in claim 4,

wherein the server apparatus further comprises file selection means for selecting the second data file in accordance with deletion history information received from the receiving apparatus, the deletion history information specifying the first data file deleted from the receiving apparatus storage section, wherein the second data file is newly transmitted to the receiving apparatus, and

the receiving apparatus further comprises history information transmitting means for transmitting, to the server apparatus, the deletion history information.

14. A control program for operating the server apparatus as set forth in claim 1 or claim 8,

the control program causing a computer to function as each of the means.

16. A computer-readable recording medium in which a control program as set forth in claim 14 is recorded.

6. A receiving apparatus for receiving, from at least one server apparatus, a plurality of data files, the receiving apparatus comprising:

a storage section for storing the plurality of data files; and

file management means for restricting use of or deleting a data file from the plurality of data files which have already been stored in the storage section and which are specified by file specifying information received from the server apparatus, wherein the file specifying information is for specifying the data file being deleted or restricted from use in the receiving apparatus.

7. The receiving apparatus as set forth in claim 6, further comprising:

history information transmitting means for transmitting, to the server apparatus, deletion history information specifying the data file deleted from the storage section.

8. A server apparatus for transmitting, to at least one receiving apparatus, a plurality of data files, the server apparatus comprising:

at least a central processing unit for executing instructions of a control program, and a computer-readable storage medium including memory for storing the control program, the server apparatus further comprising;

management information transmitting means for transmitting, to the receiving apparatus, management information specifying a second data file that is to be newly transmitted to the receiving apparatus, the receiving apparatus receiving the second data file,

wherein the second data file is transmitted to the receiving apparatus after a first data file is deleted or restricted from use in the receiving apparatus, the second data file corresponding to the first data file which has already been stored in a storage section of the receiving apparatus.

9. The server apparatus as set forth in claim 8, further comprising:

file selection means for selecting the second data file in accordance with deletion history information received from the receiving apparatus, the deletion history information specifying a first data file having been deleted from a storage section of the receiving apparatus, wherein the second data file is newly transmitted to the receiving apparatus.

10. A data management system, comprising:

the server apparatus as set forth in claim 8; and

the receiving apparatus for receiving, from the server apparatus, the plurality of data files, the receiving apparatus comprising;

a storage section for storing the plurality of data files;

file decision means for (i) receiving, from the server apparatus, management information specifying the second data file that is to be newly received from the server apparatus, and for (ii) deciding, in accordance with the management information, a first data file which has been already stored in the storage section, the first data file to be decided being deleted or restricted from use in the receiving apparatus when the second data file is stored in the storage section; and

file management means for restricting use of the first data file decided by the file decision means, or for deleting the first data file from the storage section.

11. The data management system as set forth in claim 10,

wherein the server apparatus further comprises file selection means for selecting the second data file in accordance with deletion history information received from the receiving apparatus, the deletion history information specifying the first data file deleted from the storage section, wherein the second data file is newly transmitted to the receiving apparatus, and

the receiving apparatus further comprises history information transmitting means for transmitting, to the server apparatus, the deletion history information.

12. A receiving apparatus for receiving, from at least one server apparatus, a plurality of data files, the receiving apparatus comprising:

a storage section for storing the plurality of data files;

file decision means for (i) receiving, from the server apparatus, management information specifying a second data file that is to be newly received from the server apparatus, and for (ii) deciding, in accordance with the management information, a first data file which has been already stored in the storage section, the first data file to be decided being deleted or restricted from use in the receiving apparatus when the second data file is stored in the storage section; and

file management means for restricting use of the first data file decided by the file decision means, or for deleting the first data file from the storage section,

wherein the second data file, which corresponds to the first data file, is received from the server apparatus after the first data file is deleted or restricted from use by the file management means.

13. The receiving apparatus as set forth in claim 12, further comprising:

history information transmitting means for transmitting, to the server apparatus, deletion history information specifying the first data file deleted from the storage section.

15. A control program for operating the receiving apparatus as set forth in claim 6 or claim 12,

the control program causing a computer to function as each of the means.

17. A computer-readable recording medium in which a control program as set forth in claim 15 is recorded.