Data communication system

To provide a data communication system in which a host computer is connected with a plurality of peripheral storage devices, which may carry out data transfer simultaneously without any substantial increase in data transfer time. A data transfer node includes a plurality of data compression means of...

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Bibliographische Detailangaben
Hauptverfasser:	YAMASHITA AKIYOSHI, TAKAHASHI TOSHIHISA
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER MULTIPLEX COMMUNICATION PHYSICS TRANSMISSION TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	To provide a data communication system in which a host computer is connected with a plurality of peripheral storage devices, which may carry out data transfer simultaneously without any substantial increase in data transfer time. A data transfer node includes a plurality of data compression means of different compression ratios, measuring means for measuring the effective data transfer rate of data transfer performed by the data transfer node over a communication channel, selection means for selecting one of the data compression means according to the effective data transfer rate obtained by the measuring means, and means for adding a data compression method to transferred data. A data receiving node includes means for decompressing received data by recognizing the compression method of the received data based on information about the compression method contained in the transferred data.