Ring discriminator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 11, 1997
Grant Date -
N/A
app pub date -
Dec 30, 1994
filing date -
Dec 30, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ring discriminator comprised of apparatus for receiving an input ringing signal, a counter, apparatus for applying clock pulses to the counter, apparatus for enabling the counter to count clock pulses from a cycle of ringing current, and apparatus for determining a clock pulse count on the counter to distinguish a frequency characteristic of the ringing signal.
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