Data recovery device, data management server, data management system, data recovery method and program

A data management server comprising:

• a terminal device which saves a first data among the first data and a second data in association with an identification information and uploads the second data and the identification information via a network, the first data and the second data being obtained by partitioning a binary data, and the identification information being capable of identifying the first data and the second data;
• and
• a data recovery device which recovers the binary data from the first data and the second data, the data management server being connected to the terminal device and the data recovery device via the network,
• a storage unit which saves the second data uploaded from the terminal device and the identification information in association with each other;
• and
• a control unit which detects the second data corresponding to the identification information from the storage unit in response to receiving the identification information transmitted via the network from the data recovery device acquiring the first data and the identification information from the terminal device without going through the network, and transmits the detected second data to the data recovery device via the network, thereby allowing the data recovery device to recovery the binary data.

A data management system comprising:

• a data management server which saves a first data among the first data and a second data in association with an identification information and is connected via a network to a terminal device uploading the second data and the identification information via the network, the first data and the second data being obtained by partitioning a binary data, and the identification information being capable of identifying the first data and the second data;
• and
• a data recovery device which is connected to the data management server via the network (N) and recovers the binary data from the first data and the second data,
• wherein the data management server comprises
• a storage unit which saves the second data and the identification information in association with each other, the second data and the identification information being uploaded from the terminal device;
• and
• a control unit which detects the second data corresponding to the identification information from the storage unit in response to receiving the identification information transmitted from the data recovery device via the network, and transmits the detected second data to the data recovery device via the network,
• wherein the data recovery device acquires the first data and the identification information from the terminal device without going through the network, transmits the identification information to the data management server via the network, and in response to receiving the second data corresponding to the identification information transmitted from the data management server via the network, recovers the binary data from the received second data and the first data acquired from the terminal device.

A data recovery method comprising the steps of:

• allowing the data recovery device to save a first data among the first data and a second data which are obtained by partitioning a binary data, and acquire the first data without going through the network from a terminal device which uploads the second data to a data management server via a network;
• allowing the data recovery device to acquire the second data corresponding to the acquired first data from the data management server via the network;
• and
• allowing the data recovery device to recover the binary data from the acquired first data and second data.

A data recovery method executed by a data management server comprising:

• a storage unit which is connected to a terminal device and a data recovery device via a network, the terminal device saving a first data among the first data and a second data in association with an identification information, and uploading the second data and the identification information via the network, the first data and the second data being obtained by partitioning a binary data, the identification information being capable of identifying the first data and the second data, and the data recovery device recovering the binary data from the first data and the second data, and saves the second data and the identification information uploaded from the terminal device in association with each other,
• wherein the data recovery method comprises the steps of:
• detecting the second data corresponding to the identification information from the storage unit in response to receiving the identification information transmitted via the network from the data recovery device acquiring the first data and the identification information from the terminal device without going through the network;
• and
• transmitting the detected second data to the data recovery device via the network, thereby allowing the data recovery device to recover the binary data.

A data recovery method executed by a data management system comprising:

• a data management server including a storage unit which is connected to a terminal device via a network, the terminal device saving a first data among the first data and a second data in association with an identification information, and uploading the second data and the identification information via the network, the first data and the second data being obtained by partitioning a binary data, the identification information being capable of identifying the first data and the second data, and stores the second data and the identification information uploaded from the terminal device in association with each other, and a data recovery device which is connected to the data management server via the network and recovers the binary data from the first data and the second data,
• wherein the data recovery device acquires the first data and the identification information from the terminal device without going through the network, and transmits the identification information to the data management server via the network,
• wherein the data management server detects the second data corresponding to the identification information from the storage unit in response to receiving the identification information transmitted from the data recovery device via the network,
• wherein the data management server transmits the detected second data to the data recovery device via the network, and
• wherein the data recovery device recovers the binary data from the received second data and the first data acquired from the terminal device in response to receiving the second data corresponding to the identification information transmitted from the data management server via the network.

A program making a computer to execute commands of:

• acquiring a first data without going through the network from a terminal device which saves the first data among the first data and a second data and uploads the second data to a data management server via a network, the first data and the second data being obtained by partitioning a binary data;
• acquiring the second data corresponding to the acquired first data from the data management server via the network;
• and
• recovering the binary data from the acquired first data and second data.

A program making a computer of a data management server to execute commands,

• wherein the data management server comprises a storage unit which is connected to a terminal device and a data recovery device via a network and saves a second data and an identification information uploaded from the terminal device in association with each other, the terminal device saving the first data among the first data and the second data in association with the identification information, the first data and the second data being obtained by partitioning a binary data, the identification information being capable of identifying the first data and the second data, the terminal device uploading the second data and the identification information via the network, and the data recovery device recovering the binary data from the first data and the second data,
• wherein the commands comprise:
• detecting the second data corresponding to the identification information from the storage unit in response to receiving the identification information transmitted without going through the network, from the data recovery device acquiring the first data and the identification information from the terminal device without going through the network;
• and
• transmitting the detected second data to the data recovery device via the network, thereby allowing the data recovery device to recovery the binary data.