Two-wire communications bus system

Details Two-wire communications bus system Two-wire communications bus system

2011-06-21

2011-06-21

Rinehart, Mark (Department: 2111)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

C710S107000, C340S315000, C340S870030, C375S257000, C375S259000

Reexamination Certificate

active

07966438

ABSTRACT:
A low-cost, two-wire, half-duplex high speed powered communications bus having a master/controller and one or more slave/sensor/interface units. The master/controller may have a current-limited power supply, and receive/transmit circuitry. Each slave/sensor/interface may have polarity protection and also have receive/transmit circuitry. The power supply may provide high/low voltage levels on the bus and over-current protection, and have one or more diodes for mis-wire protection. Each transmit circuit may have a tunable R-C network for limiting RF emissions. Each slave/sensor/interface may receive data and power over the two-wire bus.

REFERENCES:
patent: 4359731 (1982-11-01), Beauford et al.
patent: 4647912 (1987-03-01), Bates et al.
patent: 4689740 (1987-08-01), Moelands et al.
patent: 4721870 (1988-01-01), Rector et al.
patent: 5182466 (1993-01-01), Ohkubo
patent: 5306955 (1994-04-01), Fryer
patent: 5376928 (1994-12-01), Testin
patent: 5400017 (1995-03-01), Yoshisaka et al.
patent: 5495240 (1996-02-01), Heberle
patent: 5548240 (1996-08-01), Bayer
patent: 5559502 (1996-09-01), Schutte
patent: 5729204 (1998-03-01), Fackler et al.
patent: 6038623 (2000-03-01), Schutte
patent: 6097761 (2000-08-01), Buhring et al.
patent: 6822555 (2004-11-01), Mansfield et al.
patent: 7071727 (2006-07-01), Ganton
patent: 7230522 (2007-06-01), Stevens
patent: 7430259 (2008-09-01), North et al.
patent: 2002/0053970 (2002-05-01), Plummer
patent: 2005/0268142 (2005-12-01), Saripalli et al.
patent: 2008/0198908 (2008-08-01), Wagner
patent: 2008/0244129 (2008-10-01), Tsai
patent: 2009/0066381 (2009-03-01), Anderson et al.
Dallas Semiconductor, DS1629 2-Wire Digital Thermoneter and real time clock, Feb. 12, 2002.
Honeywell, PVL6436A, PVL6438N, PUL6438 Programmable VAV/Unitary Controllers, Installation Instructions, 24 pages, Dec. 2006.
Invensys, “MN-SXXX Series, MicroNet Sensors,” 4 pages, Mar. 2002.
Aube, Drawings of Circuits 1 and 2, 2 pages, Date of Public Use or Disclosure Not Yet Determined as of May 28, 2008.

Affiliated with

Also associated with

Rating

Two-wire communications bus system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Two-wire communications bus system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-wire communications bus system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2688833