Signal detecting system using telephone lines for signal...

Details Signal detecting system using telephone lines for signal... Signal detecting system using telephone lines for signal...

2007-11-27

2007-11-27

Nguyen, Phung T. (Department: 2612)

Communications: electrical

Condition responsive indicating system

With particular coupling link

C340S506000, C348S207990

Reexamination Certificate

active

11362778

ABSTRACT:
A signal detecting system using telephone lines for signal transmission includes at least one detecting device, at least one alarm device, and at least one telephone line. Each detecting device includes an RF receiver, a filter, a signal amplifier, a direct converting receiver, and a level converter. Each alarm device includes a controller and a warning device. By means of the signal detecting system, abnormal signals (such as signals from a pinhole camera) around a detecting area can be detected and transmitted through telephone lines, and thus activate a warning device.

REFERENCES:
patent: 6665079 (2003-12-01), Tocci et al.
patent: 2004/0046871 (2004-03-01), Ichikawa et al.
patent: 2005/0075117 (2005-04-01), Jang

Affiliated with

Also associated with

Rating

Signal detecting system using telephone lines for signal... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Signal detecting system using telephone lines for signal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal detecting system using telephone lines for signal... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3847796