US 7,388,876 B2Granted

Method and system for transmitting data in two steps by using data storage provided in data transmission equipment in network

AssigneeFujitsu Limited

InventorsTakuya Miyashita, Chiyoko Komatsu, Yoshinobu Takagi, Hirotaka Morita

Life of this patent

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Abstract

In a method for transmitting data from a first node to a second node through an interlinking network including data transmission equipments: the data is transmitted from the first node to one of the data transmission equipments together with a first request for storage of the data in the one of the data transmission equipments; the data is stored in a storage unit provided in the one of the data transmission equipments in response to the first request; a second request for the data is transmitted from the second node to the one of the data transmission equipments; the data is read out from the storage unit in response to the second request; and the data is transmitted from the one of the data transmission equipments to the second node.

Claims12

Dependent claims

Data transmission equipment for use as a constituent of a multiplex transmission network, comprising:

a reception unit which receives data;
a control information extraction unit which extracts control information from said data received by the reception unit;
a data acquisition unit which determines whether or not said control information includes a request for storage of said data, and acquires the data when said control information includes the request for storage of the data;
a data storage unit which stores the data acquired by the data acquisition unit;
a data erasing unit which determines whether or not said control information includes a request for erasing of said data stored in said data storage unit, and erases the data from the data storage unit when said control information includes the request for erasing of the data;
and
a data lock unit which determines whether or not said control information includes a request for locking said data stored in said data storage unit, and locks the data stored in said storage unit so that said stored data is protected against unintended erasing when said control information includes the request for locking the data.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/115,542Filed 3 Apr 2002
Priority: JP 2001-3442779 Nov 2001
Published: US 2003/0091057 A115 May 2003
Granted: 17 Jun 2008
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04L 49/9057
Buffering arrangements: arrangements for supporting packet reassembly or resequencing
H04L 67/561
Provisioning of proxy services: adding application-functional data or data for application control, e.g. adding metadata
H04L 67/568
Provisioning of proxy services: storing data temporarily at an intermediate stage, e.g. caching
H04J 2203/001
Switching elements: using a shared central buffer