Modem with power-off ring detection
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 7, 1987
Grant Date -
N/A
app pub date -
May 9, 1985
filing date -
May 9, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A modem which can detect an incoming call and provide an indication of the incoming call to a host computer while the power to the modem is turned off, comprising a switchable power supply that can be turned on and off by a remote input from the host computer, a ring detector circuit that monitors for incoming calls and notifies the host computer through an open drain output without using power from the computer, and isolator circuits that provide isolation on all the input/output lines between the modem and the computer to prevent power leakage from the computer's power source when the switchable power supply is turned off.
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