Automatic coin collection device for a payphone provided with no coin collection signal
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 1, 2002
Grant Date -
N/A
app pub date -
Dec 13, 1999
filing date -
Dec 13, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatic coin collection device for a payphone provided with no coin collection signal is disclosed, which has a solenoid to be activated to collect coins so as to start to count time and begin telephone communication. A call tone detector is connected to a telephone line for detecting a call tone on the line. A voice detecting circuit is connected to the telephone line for detecting a voice signal on the line. A micro-controller is provided for analyzing the detecting results of the call tone detector and the voice detecting circuit after dialing to activate the solenoid when a ring back tone disappears and a voice signal appears, or when no ring back tone is detected but a voice signal appears. With this, the user can use a payphone to make a phone call without the need of pressing a pushbutton to collect coins.
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