Circuit and method for twisted pair current source driver

Details Circuit and method for twisted pair current source driver Circuit and method for twisted pair current source driver

1994-03-29

1996-01-16

Chin, Stephen

Pulse or digital communications

Cable systems and components

375220, H04B 300

Patent

active

054854881

ABSTRACT:
A mechanism and method for efficiently communicating information regarding particular communication rate ("speed signal") between two or more communication stations (of a communication network). The transmitter operates on the IEEE P1394 High Performance Serial Bus to supply both differential and common mode signaling required by the IEEE standard for exemplary data transfer rates of 100 and 200 Mbit transmission. The present invention includes a transmission circuit that may operate in a differential signal mode and simultaneously in a common mode signal mode both utilizing a twisted pair cable. Data may be transmitted on the twisted pair at small differential signals. Information regarding the signal speed between two coupled units may be simultaneously transmitted using variations in the common mode voltage over the twisted pair. Communication may be initiated at a slower communication rate and then upgraded as appropriate for the two units. The present invention allows an efficient single circuit mechanism for communication units to transmit differential data and also to signal the use of a high speed communication rate with a common mode voltage. The present invention is especially useful within networks having units of varying versions and signal transfer rates.

REFERENCES:
patent: 4583214 (1986-04-01), Miyashita et al.
patent: 5243623 (1993-09-01), Murdock
Nippon Denki, Patent Abstracts of Japan, vol. 9, No. 219 (M-410)(1942) Sep. 6, 1985.
Sundstrom, R. et al., A Low Power Differential Bus Utilizing Novel Split Level Bus Technique Sep. 17-18, 1990, pp. 144-147.

Affiliated with

Also associated with

Rating

Circuit and method for twisted pair current source driver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit and method for twisted pair current source driver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit and method for twisted pair current source driver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-315091