Relay node system and relay control method of the same system
First Claim
1. A relay node system, which receives a data stream having a series of data elements transmitted from a transmitting node and which re-outputs the data stream to a receiving node, comprising:
- data receiving means for receiving said data stream transmitted from said transmitting node;
storing means for temporarily storing data of said received data stream; and
data transmitting means for reading said data stored in said storing means to be transmitted to said receiving node,wherein said storing means includes;
primary buffer means, having a high-speed memory, for temporarily storing data of said data stream;
secondary buffer means having a memory capacity slower and larger than said primary buffer means; and
data transfer means for executing a save processing and a restore processing, said save processing including processing for detecting danger of an overflow at an input side of said primary buffer means to transfer data from said primary buffer means to said secondary buffer means by a block unit, and said restore processing including processing transferring data saved to said secondary buffer means to said primary buffer means by a block unit for the data transmission by said data transmitting means.
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Accused Products
Abstract
A relay node system, which receives a data stream having a series of data elements transmitted from a transmitting node and which re-outputs the data stream to a receiving node, comprises data receiving section for receiving the data stream transmitted from the transmitting node, storing section for temporarily storing data of the received data stream, and data transmitting section for reading the data stored in the storing section to be transmitted to the receiving node, wherein the storing section includes primary buffer section, having a high-speed memory, for temporarily storing data of the data stream, secondary buffer section having a memory capacity slower and larger than the primary buffer section, and data transfer section for executing a save processing and a restore processing, the save processing including processing for detecting danger of an overflow at an input side of the primary buffer section to transfer data from the primary buffer section to the secondary buffer section by a block unit, and the restore processing including processing transferring data saved to the secondary buffer section to the primary buffer section by a block unit for the data transmission by the data transmitting section.
66 Citations
20 Claims
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1. A relay node system, which receives a data stream having a series of data elements transmitted from a transmitting node and which re-outputs the data stream to a receiving node, comprising:
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data receiving means for receiving said data stream transmitted from said transmitting node; storing means for temporarily storing data of said received data stream; and data transmitting means for reading said data stored in said storing means to be transmitted to said receiving node, wherein said storing means includes; primary buffer means, having a high-speed memory, for temporarily storing data of said data stream; secondary buffer means having a memory capacity slower and larger than said primary buffer means; and data transfer means for executing a save processing and a restore processing, said save processing including processing for detecting danger of an overflow at an input side of said primary buffer means to transfer data from said primary buffer means to said secondary buffer means by a block unit, and said restore processing including processing transferring data saved to said secondary buffer means to said primary buffer means by a block unit for the data transmission by said data transmitting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A relay control method in a relay node system, which receives a data stream having a series of data elements transmitted from a transmitting node and which re-outputs said data stream to a receiving node, comprising the steps of:
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receiving said data stream transmitted from said transmitting node; writing data of said data stream to primary buffer means; reading data written to said primary buffer means in accordance with an output rate to said receiving node requested to the corresponding data stream; executing a save processing for transferring the following data from said primary buffer means to secondary buffer means having a memory capacity slower and larger than said primary buffer means by a block unit when danger of an overflow occurs at an input side of said primary buffer means; and executing a restore processing for transferring data saved in said secondary buffer means by said save processing to said primary buffer means from said secondary buffer means such that said data can be continuously output to said receiving node following on storage data of said primary buffer means. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification