Surveillance system using pulse-coded rays

Details Surveillance system using pulse-coded rays Surveillance system using pulse-coded rays

2004-09-28

2008-11-25

Diep, Nhon T (Department: 2621)

Television

Special applications

Observation of or from a specific location

Reexamination Certificate

active

07456860

ABSTRACT:
Five infrared sensors are located in different height positions between respective main bodies10A to10H, and all of these infrared sensors transmit and receive 35 infrared rays pulse-coded in conformity with a start-stop system. In addition, these pulse-coded infrared rays have the signal width of, for example, 450 μs, and are serially transmitted with a predetermined delay time in a period of 20 ms by a delayed synchronizing-signal. Intrusion surveillance is performed by identifying the pulse codes of these infrared rays. According to this, since not only interference among a plurality of infrared sensors is prevented, but also infrared rays are outputted in a short time, the occurrence of false alarms etc. decreases remarkably.

REFERENCES:
patent: 4829442 (1989-05-01), Kadonoff et al.
patent: 5984175 (1999-11-01), Popp
patent: 7233745 (2007-06-01), Loechner
patent: 06-315150 (1994-11-01), None
patent: 09-016865 (1997-01-01), None

Affiliated with

Also associated with

Rating

Surveillance system using pulse-coded rays does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Surveillance system using pulse-coded rays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surveillance system using pulse-coded rays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4042936