Method and apparatus for full duplex signaling across a...

Details Method and apparatus for full duplex signaling across a... Method and apparatus for full duplex signaling across a...

2007-01-02

2007-01-02

Ghebretinsae, Temesghen (Department: 2611)

Pulse or digital communications

Cable systems and components

Transformer coupling

C375S219000, C375S319000

Reexamination Certificate

active

10857469

ABSTRACT:
Simultaneous bi-directional communication of digital signals across an isolation barrier, such as a pulse transformer, is presented. On the pimary side of the barrier, a voltage driver drives a digital transmit data stream, that is encoded to be DC balanced in both current and voltage domains, across the barrier. On the secondary side, an impedance switching circuit modulates the load impedance of the voltage driver in accordance with a digital receive data stream. The modulation of the load impedance is detected on the primary side by sampling the sourced current of the voltage driver to extract the digital receive data. The voltage driver may be sampled at predictable points in time when the current it is sourcing is primarily dependent upon the load impedance of the secondary side. Alternatively, the magnetizing inductance current of the isolation barrier can be subtracted from the current sourced due to the known transmit data.

REFERENCES:
patent: 5384808 (1995-01-01), Van Brunt et al.
patent: 5506900 (1996-04-01), Fritz
patent: 5654984 (1997-08-01), Hershbarger et al.
patent: 2 249 919 (1992-05-01), None
patent: WO 81/00658 (1981-03-01), None

Affiliated with

Also associated with

Rating

Method and apparatus for full duplex signaling across a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for full duplex signaling across a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for full duplex signaling across a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3807982