Communication apparatus

Details Communication apparatus Communication apparatus

2007-11-27

2007-11-27

Nguyen, Simon (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

C455S067110, C455S270000, C455S295000, C375S232000

Reexamination Certificate

active

10913495

ABSTRACT:
A communication apparatus has an A/D converter which converts an analog signal which was received, into a digital signal, a converter which converts a reception signal so as to enable handling of phase information, a carrier detector which detects presence or absence of the reception signal, a synchronous circuit which extract synchronization timing from the reception signal, an equalizer which corrects the reception signal so as to cancel influence of a transmission path, a transmission path estimator which estimates a state of a power line transmission path, and a judging unit which judges the reception signal, which was amended by the equalizer, by use of a threshold value.

REFERENCES:
patent: 5497398 (1996-03-01), Tzannes et al.
patent: 5631610 (1997-05-01), Sandberg et al.
patent: 5636246 (1997-06-01), Tzannes et al.
patent: 5995539 (1999-11-01), Miller
patent: 6397368 (2002-05-01), Yonge, III et al.
patent: 6442129 (2002-08-01), Yonge, III et al.
patent: 6507622 (2003-01-01), Maki et al.
patent: 6532256 (2003-03-01), Miller
patent: 6754170 (2004-06-01), Ward
patent: 6952441 (2005-10-01), Peeters
patent: 7058002 (2006-06-01), Kumagai et al.
patent: 7161896 (2007-01-01), Hart et al.
patent: 2002/0041637 (2002-04-01), Smart et al.
patent: 2002/0126768 (2002-09-01), Isaksson et al.
patent: 2002/0137467 (2002-09-01), Tzannes
patent: 2003/0016773 (2003-01-01), Atungsiri et al.
patent: 2003/0043732 (2003-03-01), Ketchum et al.
patent: 2003/0133473 (2003-07-01), Manis et al.
patent: 2003/0210749 (2003-11-01), Asjadi
patent: 2004/0005022 (2004-01-01), Zhu et al.
patent: 2004/0105512 (2004-06-01), Priotti
patent: 2004/0160990 (2004-08-01), Logvinov et al.
patent: 2004/0190648 (2004-09-01), Anim-Appiah et al.
patent: 62294339 (1987-12-01), None
patent: 11163807 (1999-06-01), None
patent: 11252031 (1999-09-01), None
patent: 11275165 (1999-10-01), None
patent: 2001298439 (2001-10-01), None
patent: 9810545 (1998-03-01), None
M. C. Sun, et al., “Power-Line Communications using DWMT Modulation,” International Symposium on Circuits and Systems, IEEE, XP002271367, vol. 4, pp. 493-496, May 26-29, 2002.
H. S. Malvar; “Signal Processing with Lapped Transforms,” Artech House, Inc., pp. 204-209 and 214-219, 1992.
Japanese Office Action dated Nov. 22, 2006 with English translation.

Affiliated with

Also associated with

Rating

Communication apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Communication apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Communication apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3866154