Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2007-06-12
2007-06-12
Fan, Chieh M. (Department: 2611)
Pulse or digital communications
Receivers
Angle modulation
C375S345000, C370S228000, C370S243000, C370S242000, C714S748000, C714S713000
Reexamination Certificate
active
09895493
ABSTRACT:
The communication system includes two communication channels for communication of protection and control information between two protective relays on a power line portion of an electric power system. A switch provided at the receiving relay connects one communication channel and provides a connecting link between the communication channel and the receiving relay. The transmitted data is applied on both communication channels and processed substantially identically. When the one communication channel is indicated to be faulty, the switch in the receiving relay is operated to connect the second communication channel, thereby substantially preventing delay in the receipt of the data from the transmitting relay.
REFERENCES:
patent: 3663762 (1972-05-01), Joel, Jr.
patent: 4760487 (1988-07-01), Kwong et al.
patent: 5543995 (1996-08-01), Kumagai et al.
patent: 5793750 (1998-08-01), Schweitzer et al.
patent: 5838525 (1998-11-01), Ward et al.
patent: 5982595 (1999-11-01), Pozzuoli
patent: 2001/0015107 (2001-08-01), Feller
Cook Alex McFarron Manzo Cummings & Mehler, Ltd.
Fan Chieh M.
Schweitzer Engineering Laboratories Inc.
Zheng Eva
LandOfFree
System and method for aligning data between local and remote... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for aligning data between local and remote..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for aligning data between local and remote... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3882424