Personal safety device having microprocessor control and method for operating the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 23, 1993
Grant Date -
N/A
app pub date -
Sep 17, 1991
filing date -
Sep 17, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A personal safety device controlled by a microprocessor which responds to commands, such as activation and deactivation commands. The microprocessor acts to control sound emitted from two separate speakers. The sound is controlled through digital outputs of the microprocessor such that the sound emitted by the first speaker has a first sinusoidal component sin(a) and the sound emitted by the second speaker has a second sinusoidal component sin(b) yielding a complex tone when perceived by a human ear. The personal safety device further allows for coded deactivation thereby rendering it difficult for a third-party without knowledge of the code, such as a would-be attacker, to deactivate the device. Further, the personal safety device provides a detection circuit for detecting a low battery condition. Finally, a method for operating the device is disclosed.
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