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1. WO1997015123 - METHOD AND APPARATUS FOR DUAL PURPOSE TWISTED PAIR INTERFACE CIRCUIT FOR MULTIPLE SPEED MEDIA IN A NETWORK

Publication Number WO/1997/015123
Publication Date 24.04.1997
International Application No. PCT/US1996/016507
International Filing Date 16.10.1996
Chapter 2 Demand Filed 19.05.1997
IPC
H04L 12/413 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
28characterised by path configuration, e.g. LAN or WAN
40Bus networks
407with decentralised control
413with random access, e.g. carrier-sense multiple-access with collision detection (CSMA-CD)
H04L 29/08 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
29Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/-H04L27/136
02Communication control; Communication processing
06characterised by a protocol
08Transmission control procedure, e.g. data link level control procedure
CPC
H04L 12/40136
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
28characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
40Bus networks
4013Management of data rate on the bus
40136Nodes adapting their rate to the physical link properties
H04L 69/323
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
69Application independent communication protocol aspects or techniques in packet data networks
30Definitions, standards or architectural aspects of layered protocol stacks
32High level architectural aspects of 7-layer open systems interconnection [OSI] type protocol stacks
322Aspects of intra-layer communication protocols among peer entities or protocol data unit [PDU] definitions
323in the physical layer, i.e. layer one
Y02D 30/50
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
30Reducing energy consumption in communication networks
50in wire-line communication networks, e.g. low power modes or reduced link rate
Applicants
  • 3COM CORPORATION [US]/[US]
Inventors
  • WADHAWAN, Ruchi
  • OWENS, Craig
Agents
  • WOODS, Michael, E.
Priority Data
08/544,74518.10.1995US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR DUAL PURPOSE TWISTED PAIR INTERFACE CIRCUIT FOR MULTIPLE SPEED MEDIA IN A NETWORK
(FR) PROCEDE ET DISPOSITIF DESTINES A UN CIRCUIT D'INTERFACE EN PAIRES TORSADEES A DOUBLE USAGE POUR SUPPORT A VITESSE MULTIPLE DANS UN RESEAU
Abstract
(EN)
A method and apparatus is provided allowing a dual-speed network adapter to connect to the same physical connector without the use of mechanical or electromechanical switches. On the transmit side, the invention uses a differential amplifier buffer (130) to selectively couple high speed transmit paths to the network, with the differential amplifier (130) connected to the same output impedance as one of the two drivers (110, 140) circuits. On the receive path, the invention allows data to be received in parallel by two receiver circuits (30, 70), with one circuit isolated from the other with a pair of very high impedance emitter/followers (40, 50).
(FR)
L'invention concerne un procédé et un dispositif pour la configuration d'un adaptateur de réseau à double vitesse permettant de coupler le même connecteur physique sans utiliser d'interrupteur mécanique ou électromécanique. Du côté émission, le système comporte un tampon d'amplificateur différentiel (130) pour le couplage sélectif des trajets d'émissions grande vitesse au réseau, l'amplificateur différentiel (130) étant couplé à la même impédance de sortie que l'un des deux attaqueurs (110, 140). Du côté réception, le système permet de recevoir des données en parallèle sur deux circuits de réception (30, 70), chacun des deux circuits étant isolés de l'autre par le biais d'une paire de montages de type émetteur/suiveur à très haute impédance (40, 50).
Also published as
Latest bibliographic data on file with the International Bureau