Method and system for downloading data to network nodes
AssigneeNEC Corporation
InventorYasuyo Okanoue
Life of this patent
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Abstract
A network system comprises a terminal storing a update data file, a gateway device having a temporary memory, and a network comprising a plurality of nodes. Each node is provided with an active memory for storing a current data file and at least a backup memory for storing the update data file. Data of the update data file are sequentially transferred from the terminal to the backup memory of each node through the gateway device in which the date are stored into the temporary memory. After the update data file has been stored in the backup memory, the update data file is caused to be active and the current data file to be non-active.
Claims30
A system comprising:
- a first device comprising a first memory for storing a first data file;
- a second device comprising a second memory for storing the first data file received from the first device;
- and
- a network which is connected to the second device and receives the first data file from the second device,
- the network comprising a plurality of nodes in a predetermined configuration,
- each the node comprising:
- a plurality of memories each having a capacity which is not smaller than an amount of the first data file, one of the plurality of memories storing a second data file;
- and
- control means for controlling the plurality of memories such that another of the plurality of memories stores the first data file received from the second device.
In a system comprising a transfer device and a network connected to the transfer device, the network comprising a plurality of nodes each comprising a plurality of memories, one of the plurality of memories storing a first data file, a data transfer method for transferring a second data file to each node, comprising the steps of:
- sequentially transferring data of the second data file to the transfer device;
- sequentially transferring the data of the second data file from the transfer device to the network, while storing the data of the second data file in the transfer device;
- storing the data of the second data file received from the transfer device onto another memory of each node.
A data updating system comprising:
- a first device comprising a first memory for storing a first data file;
- a second device comprising a second memory for storing the first data file received from the first device;
- and
- a network which is connected to the second device and receives the first data file from the second device,
- the network comprising a plurality of nodes in a predetermined configuration,
- each node comprising:
- a plurality of memories each having a capacity which is not smaller than an amount of the first data file, one of the plurality of memories storing a current data file;
- and
- control means for controlling the plurality of memories such that another of the memories stores the first data file received from the second device to use the first data file as an active data file.
In a system comprising a transfer device and a network connected to the transfer device, the network comprising a plurality of nodes each comprising a plurality of memories, one of the plurality of memories storing a first firmware file, a firmware download method for downloading a second firmware file to each the node, comprising the steps of:
- sequentially transferring data of the second firmware file to the transfer device;
- sequentially transferring the data of the second firmware file from the transfer device to the network, while storing the data of the second firmware file in the transfer device;
- storing the data of the second firmware file received from the transfer device onto another memory of each node.
Dependencies are inferred from the claim text.