Multiplex communications – Channel assignment techniques – Carrier sense multiple access
Patent
1998-04-20
2000-06-06
Jung, Min
Multiplex communications
Channel assignment techniques
Carrier sense multiple access
370465, H04L 12413
Patent
active
060728035
ABSTRACT:
A communication protocol detection system for enabling a network system to detect and interface one or more network devices each operating according to at least one of a plurality of different communication protocols. In one embodiment, a network interface card (NIC) is capable of operating according to one of two different communication protocols, such as the 10Base-T and 100Base-TX Ethernet Standards. The NIC includes two corresponding transceivers, where the transceivers are interfaced to a network connector for interfacing an external network device. Control logic initially enables the 10Base-T transceiver to determine if link pulses are detected. If link pulses are detected, the 100Base-T transceiver is enabled to determine if it detects the link pulses. If so, the 100Base-T transceiver is used to establish communications, and if not, the 10Base-T transceiver is used. Preferably, the 100Base-T transceiver is re-enabled a predetermined number of times to determine if the network device is a 100 Mbps device. In another embodiment, a repeater includes a plurality of interface circuits, each including a plurality of transceivers. Each of the transceivers of each of the interface circuits of each port is connected to a corresponding repeater module through an array of buses. Control logic enables the transceivers one at a time within each interface circuit and correspondingly monitors the corresponding link signal. When an enabled transceiver detects link pulses, that transceiver is used to establish communications. If a link signal indicates termination of communications, enabling of the transceivers one at a time is resumed.
REFERENCES:
patent: 5305317 (1994-04-01), Szczepanek
patent: 5438570 (1995-08-01), Karras et al.
patent: 5469545 (1995-11-01), Vanbuskirk et al.
patent: 5541957 (1996-07-01), Lau
patent: 5568525 (1996-10-01), de Nijs et al.
patent: 5574722 (1996-11-01), Slykhouse et al.
patent: 5586117 (1996-12-01), Edem et al.
patent: 5600644 (1997-02-01), Chang et al.
patent: 5617418 (1997-04-01), Shirani et al.
patent: 5687174 (1997-11-01), Edem et al.
patent: 5754552 (1998-05-01), Allmond et al.
Allmond David M.
Bennett Arthur T.
Hoang Hieu M.
Hoang Thao Minh
Nouri Ahmad
Compaq Computer Corporation
Jung Min
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