Self-calibration procedure in physical layer transceiver for...

Details Self-calibration procedure in physical layer transceiver for... Self-calibration procedure in physical layer transceiver for...

2007-05-08

2007-05-08

Harold, Jefferey (Department: 2614)

Telephonic communications

Subscriber line or transmission line interface

C379S093050, C379S027010

Reexamination Certificate

active

09336709

ABSTRACT:
A novel method of configuring a physical layer transceiver for providing data communications via residential wiring. A transmit section of the transceiver produces a pulse signal having selected amplitude. This pulse signal received by an input circuit in a receiver section of the transceiver is used for adjusting the gain of the input circuit to a fixed optimum level. In particular, the gain of the input circuit may be adjusted in response to at least one pulse. A calibration circuit of the transceiver includes a comparator for comparing the receive signal produced at the output of the input circuit, with a threshold level, and controller that supplies the input circuit with a gain control value, and sets the threshold level. The controller reduce the gain control value to decrease the gain of the input circuit when the receive signal exceeds the threshold level. The gain control value is increased to raise the gain of the input circuit when the receive signal is less than the threshold level.

REFERENCES:
patent: 4637064 (1987-01-01), Roberts et al.
patent: 6029047 (2000-02-01), Ishida et al.
patent: 6069899 (2000-05-01), Foley

Affiliated with

Also associated with

Rating

Self-calibration procedure in physical layer transceiver for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self-calibration procedure in physical layer transceiver for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-calibration procedure in physical layer transceiver for... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3725528