Out-of-band signaling using detector with equalizer,...

Details Out-of-band signaling using detector with equalizer,... Out-of-band signaling using detector with equalizer,...

2008-11-25

2010-10-05

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S065000, C327S074000, C327S077000

Reexamination Certificate

active

07808282

ABSTRACT:
Power-down mode is activated when equal voltages are detected on a pair of differential inputs. The voltage difference across the differential inputs is equalized by an equalizer and then applied to a multiplier and smoothed and filtered by a low-pass filter to produce an average signal. The average signal is compared to a reference voltage to detect when the voltage difference across the differential inputs is too small. A power-down signal is activated when the average signal is too small. The reference voltage compared can be generated by an equalizer, multiplier, and low-pass filter to match process, temperature, and supply-voltage variations in the primary signal path. The multipliers can be implemented with Gilbert cells. The equalizers can receive control signals to control attenuation of different frequency components.

REFERENCES:
patent: 4154978 (1979-05-01), Tu
patent: 4188574 (1980-02-01), Allington
patent: 5726592 (1998-03-01), Schulte et al.
patent: 6002717 (1999-12-01), Gaudet
patent: 6445165 (2002-09-01), Malik et al.
patent: 6448806 (2002-09-01), Roth
patent: 6593801 (2003-07-01), Hattori
patent: 6791371 (2004-09-01), Cheung
patent: 6897712 (2005-05-01), Ficken et al.
patent: 6982592 (2006-01-01), Petrovic et al.
patent: 7009827 (2006-03-01), Lee et al.
patent: 7394863 (2008-07-01), Schoenborn

Affiliated with

Also associated with

Rating

Out-of-band signaling using detector with equalizer,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Out-of-band signaling using detector with equalizer,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Out-of-band signaling using detector with equalizer,... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4188123