Information processing system
First Claim
1. An information processing system comprising:
- at least two information processing devices being connected through a communication network so as to be communicated with each other in order to enable data transfer so that both of said information processing devices hold information data containing the same content, and each having a memory used to store said information data; and
wherein said data stored in said memory is made up of unit data being split into a predetermined unit and said data is of a hierarchical tree structure in which nodes are expressed by tags and wherein each of said nodes existing in a lowest layer in said hierarchical tree structure corresponds to each piece of said unit data and to each of said tags expressing each of said nodes in said lowest layer are added identifying information used to identify each piece of said unit data and time information indicating a time of storing each piece of said unit data into said memory, and wherein each of said information processing devices includes a replication control unit which, by using said identifying information and said time information, detects inconsistent portion of said data held by each of said information processing devices and performs replication of said inconsistent portion of said data only between said information processing devices.
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Accused Products
Abstract
Information processing system is provided which includes at least two information processing devices connected through a communication network so as to be communicated with each other for transmission of data so that both devices can have information data showing the same contents and each having a memory to store the data.
The data in each of memories is constructed of unit data split into a predetermined unit. The data is of a hierarchical tree structure in which the data to be replicated exists in a lowest layer and each of nodes in the tree structure is expressed by tags. To the tag are added identifying information and time information. Each of the above devices has replication control section adapted, by using the identifying and time information, to detect inconsistent portions of the information and to replicate only the inconsistent portions between the devices.
17 Citations
12 Claims
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1. An information processing system comprising:
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at least two information processing devices being connected through a communication network so as to be communicated with each other in order to enable data transfer so that both of said information processing devices hold information data containing the same content, and each having a memory used to store said information data; and
wherein said data stored in said memory is made up of unit data being split into a predetermined unit and said data is of a hierarchical tree structure in which nodes are expressed by tags and wherein each of said nodes existing in a lowest layer in said hierarchical tree structure corresponds to each piece of said unit data and to each of said tags expressing each of said nodes in said lowest layer are added identifying information used to identify each piece of said unit data and time information indicating a time of storing each piece of said unit data into said memory, and wherein each of said information processing devices includes a replication control unit which, by using said identifying information and said time information, detects inconsistent portion of said data held by each of said information processing devices and performs replication of said inconsistent portion of said data only between said information processing devices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification