Radio frequency-based proximity detection system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 2, 2012
Grant Date -
N/A
app pub date -
Nov 3, 2009
filing date -
Nov 3, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A detection system includes a base station and a sensor. The base station defines a detection area and is configured to transmit a detection signal at a first frequency. The base station is further configured to facilitate selective variation of the detection area. The sensor is configured to detect the detection signal and transmit a communication signal at a second frequency in response to the detection signal. Movement of the sensor between the detection area and an area outside of the detection area affects detection of the detection signal. The first frequency is less than the second frequency.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully