Active T-coupler for fiber optic local networks which permits co

Details Active T-coupler for fiber optic local networks which permits co Active T-coupler for fiber optic local networks which permits co

1979-05-25

1980-11-11

Pitts, Harold I.

Communications: electrical

Digital comparator systems

340147LP, 455612, H04Q 900, H04B 900

Patent

active

042335892

ABSTRACT:
An active T-coupler for fiber optic local networks which permits collision detection wherein two input 36, 44 optical fibers are coupled to photodetectors 360, 440, respectively. Two output 34, 46 optical fibers are coupled to receive light from light sources 340, 460. Driving sources 340, 460 are gate circuits 342, 462, which function in a manner similar to an OR gate, via driver circuits 341, 461. These OR gates receive electrical signals from the host station or an input light fiber detector. Further, the input detectors 360, 440 provide electrical signals to the driving OR gates 342, 462 to pass the signal on, i.e. repeat, or drive OR gate 370 to transmit the signal to the host station. Thus the coupler can act as an optical repeater or transmit originally generated light signals in either the forward or reverse directions. Further, the host station can monitor the electrical signals from the input detectors to detect the occurrence of a data collision while transmitting and thereby react appropriately.

REFERENCES:
patent: 4063220 (1977-12-01), Metcalfe

Affiliated with

Also associated with

Rating

Active T-coupler for fiber optic local networks which permits co does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Active T-coupler for fiber optic local networks which permits co, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active T-coupler for fiber optic local networks which permits co will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1694189