Integrated twisted pair filter with a secure RIC function

Details Integrated twisted pair filter with a secure RIC function Integrated twisted pair filter with a secure RIC function

1995-07-10

1998-10-13

Lall, Parshotam S.

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

H04J 308

Patent

active

058223258

ABSTRACT:
A repeater interface controller ("RIC") integrated circuit with integrated filters and buffer drivers is provided for use in a repeater. In one embodiment, the RIC uses two filters to filter link pulse signals and data signals for a plurality of ports. Thus, the RIC is able to concurrently provide filtered link pulses to some ports and filtered data signals to other ports. Further, because only two filters are used, the area required to implement the plurality of ports is reduced relative to conventional repeaters that use a filter for each port. In another embodiment of the present invention, a RIC includes a logic circuit and a plurality of analog multiplexers and twisted pair buffer drivers. The analog multiplexers receive signals on their input lines and select which of these signals are passed to the buffer drivers to be outputted. The logic circuit provides control signals to the analog multiplexers such that the analog multiplexers select a new input line when the signal on the new input line is approximately the same as the signal on the currently selected input line. As a result, the signal passed on to the buffer drivers remains approximately the same, thereby reducing switching noise.

REFERENCES:
patent: 4847831 (1989-07-01), Spiesman et al.
patent: 5293375 (1994-03-01), Moorwood et al.
patent: 5357145 (1994-10-01), Segaram
patent: 5361261 (1994-11-01), Edem et al.
patent: 5410188 (1995-04-01), Segaram
patent: 5432907 (1995-07-01), Picazo et al.

Affiliated with

Also associated with

Rating

Integrated twisted pair filter with a secure RIC function does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integrated twisted pair filter with a secure RIC function, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated twisted pair filter with a secure RIC function will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-320895