BACKUP SYSTEM, BACKUP DEVICE, BACKUP REQUEST DEVICE, BACKUP METHOD, BACKUP REQUEST METHOD, BACKUP PROGRAM AND BACKUP REQUEST PROGRAM
First Claim
1. A backup system in which a plurality of backup request devices is connected to a backup device, wherein:
- the backup request device includes;
a content data storage section that stores a piece of content data; and
a transmission section that regards the piece of content data as a piece of backup target data and transmits to the backup device, along with a piece of device identification information, a piece of backup information that includes a piece of data quality information indicating the data quality of the piece of backup target data and a piece of content identification information, andthe backup device includes;
a storage section that stores a piece of backup data that is the same content as the piece of backup target data and whose data quality is higher than or equal to the piece of backup target data such that the piece of backup data is associated with the piece of content identification information;
a receiving section that receives from the backup request device the piece of backup information and the piece of device identification information; and
a control section that stores, when the receiving section receives the piece of backup information and the piece of device identification information, the piece of backup information in the storage section such that the piece of backup information is associated with the piece of device identification information.
1 Assignment
0 Petitions
Accused Products
Abstract
In a backup system, a backup request device includes: a storage section that stores a piece of content data; and a transmission section that regards the piece of content data as a piece of backup target data and transmits, along with a piece of device identification information, a piece of backup information including a piece of data quality information and a piece of content identification information, while a backup device includes: a storage section that stores a piece of backup data that is the same content as the piece of backup target data and whose data quality is higher than or equal to the piece of backup target data such that it is associated with the piece of content identification information; and a control section that stores the received piece of backup information in the storage section such that it is associated with the received piece of device identification information.
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Citations
21 Claims
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1. A backup system in which a plurality of backup request devices is connected to a backup device, wherein:
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the backup request device includes; a content data storage section that stores a piece of content data; and a transmission section that regards the piece of content data as a piece of backup target data and transmits to the backup device, along with a piece of device identification information, a piece of backup information that includes a piece of data quality information indicating the data quality of the piece of backup target data and a piece of content identification information, and the backup device includes; a storage section that stores a piece of backup data that is the same content as the piece of backup target data and whose data quality is higher than or equal to the piece of backup target data such that the piece of backup data is associated with the piece of content identification information; a receiving section that receives from the backup request device the piece of backup information and the piece of device identification information; and a control section that stores, when the receiving section receives the piece of backup information and the piece of device identification information, the piece of backup information in the storage section such that the piece of backup information is associated with the piece of device identification information.
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2. A backup device connected to a plurality of backup request devices, comprising:
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a storage section that stores a piece of backup data that is the same content as a piece of backup target data or piece of content data stored in the backup request device and whose data quality is higher than or equal to the piece of backup target data such that the piece of backup data is associated with a piece of content identification information; a receiving section that receives from the backup request device a piece of backup information and a piece of device identification information, the piece of backup information containing a piece of data quality information indicating the data quality of the piece of backup target data and the piece of content identification information; and a control section that stores, when the receiving section receives the piece of backup information and the piece of device identification information, the piece of backup information in the storage section such that the piece of backup information is associated with the piece of device identification information. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A backup request device connected to a backup device, comprising:
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a storage section that stores a piece of content data; and a transmission section that regards the piece of content data stored in the storage section as a piece of backup target data and transmits to the backup device, along with a piece of device identification information, a piece of backup information that includes a piece of data quality information indicating the data quality of the piece of backup target data and a piece of content identification information, the backup device storing a piece of backup data that is the same content as the piece of backup target data and whose data quality is higher than or equal to the piece of backup target data such that the piece of backup data is associated with the piece of content identification information. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A backup method comprising:
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a step of storing in a storage section a piece of backup data, which is the same content as a piece of backup target data or piece of content data that a backup request device requests to be backed up and whose data quality is higher than or equal to the piece of backup target data, such that the piece of backup data is associated with a piece of content identification information; a step of receiving from the backup request device a piece of backup information and a piece of device identification information, the piece of backup information containing a piece of data quality information indicating the data quality of the piece of backup target data and the piece of content identification information; and a step of storing the piece of backup information in the storage section such that the piece of backup information is associated with the pierce of device identification information.
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19. A backup request method comprising:
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a step of storing a piece of content data in a storage section; and a step of regarding the piece of content data as a piece of backup target data and transmitting to a backup device, along with a piece of device identification information, a piece of backup information that includes a piece of data quality information indicating the data quality of the piece of backup target data and a piece of content identification information, the backup device storing a piece of backup data that is the same content as the piece of backup target data and whose data quality is higher than or equal to the piece of backup target data such that the piece of backup data is associated with the piece of content identification information.
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20. A backup program for causing a computer to execute:
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a step of storing in a storage section a piece of backup data, which is the same content as a piece of backup target data or piece of content data that a backup request device requests to be backed up and whose data quality is higher than or equal to the piece of backup target data, such that the piece of backup data is associated with a piece of content identification information; a step of receiving from the backup request device a piece of backup information and a piece of device identification information, the piece of backup information containing a piece of data quality information indicating the data quality of the piece of backup target data and the piece of content identification information; and a step of storing the piece of backup information in the storage section such that the piece of backup information is associated with the pierce of device identification information.
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21. A backup request program for causing a computer to execute:
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a step of storing a piece of content data in a storage section; and a step of regarding the piece of content data as a piece of backup target data and transmitting to a backup device, along with a piece of device identification information, a piece of backup information that includes a piece of data quality information indicating the data quality of the piece of backup target data and a piece of content identification information, the backup device storing a piece of backup data that is the same content as the piece of backup target data and whose data quality is higher than or equal to the piece of backup target data such that the piece of backup data is associated with the piece of content identification information.
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Specification