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1. (WO2001039389) COMMUNICATION METHOD AND COMMUNICATION DEVICE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/039389 International Application No.: PCT/JP2000/008125
Publication Date: 31.05.2001 International Filing Date: 17.11.2000
IPC:
H04B 3/54 (2006.01) ,H04L 5/14 (2006.01) ,H04L 12/28 (2006.01) ,H04L 27/26 (2006.01) ,H04L 29/06 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
3
Line transmission systems
54
Systems for transmission via power distribution lines
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5
Arrangements affording multiple use of the transmission path
14
Two-way operation using the same type of signal, i.e. duplex
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12
Data switching networks
28
characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27
Modulated-carrier systems
26
Systems using multi-frequency codes
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
29
Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/-H04L27/136
02
Communication control; Communication processing
06
characterised by a protocol
Applicants: MATSUMOTO, Wataru[JP/JP]; JP (UsOnly)
HANE, Toshihisa[JP/JP]; JP (UsOnly)
MIZUGAI, Yoshinori[JP/JP]; JP (UsOnly)
NARIKAWA, Masafumi[JP/JP]; JP (UsOnly)
MITSUBISHI DENKI KABUSHIKI KAISHA[JP/JP]; 2-3, Marunouchi 2-chome Chiyoda-ku, Tokyo 100-8310, JP (AllExceptUS)
Inventors: MATSUMOTO, Wataru; JP
HANE, Toshihisa; JP
MIZUGAI, Yoshinori; JP
NARIKAWA, Masafumi; JP
Agent: SAKAI, Hiroaki; Tokyo Club Building 2-6, Kasumigaseki 3-chome Chiyoda-ku Tokyo 100-0013, JP
Priority Data:
11-33199322.11.1999JP
Title (EN) COMMUNICATION METHOD AND COMMUNICATION DEVICE
(FR) PROCEDE ET DISPOSITIF DE COMMUNICATION
Abstract:
(EN) A communication method for perming data communication between communication devices multi-connected to a transmission line by using a multi-carrier modulation/demodulation technique, wherein when the multi-connected communication devices perform data transmission at the same time, a control apparatus (1) which functions as a master manages and arbitrates the communication status of the line to realize drastic reduction of the transmission delay, thereby realizing data communication for a call or moving picture reproduction which requires the real time.
(FR) L'invention concerne un procédé de communication destiné à permettre la communication de données entre des dispositifs de communication multiconnectés à une ligne de transmission, lequel procédé utilise une technique de modulation/démodulation multi-porteuses. Ledit procédé est caractérisé en ce que, lorsque les dispositifs de communication multiconnectés procèdent à la transmission des données en même temps, un appareil (1) de commande fonctionnant comme maître gère et arbitre le statut de communication de la ligne, de manière à réduire de façon drastique les retards de transmission, ce qui permet de procéder, en temps réel, comme voulu, à la communication des données relatives à un appel ou à la reproduction d'une image animée.
front page image
Designated States: CA, CN, IL, KR, NO, US
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)