System for adapting a conventional telephone line to a data...

Details System for adapting a conventional telephone line to a data... System for adapting a conventional telephone line to a data...

2007-05-01

2007-05-01

Woo, Stella (Department: 2614)

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

C379S106040, C379S106080

Reexamination Certificate

active

10507264

ABSTRACT:
The system includes a device (1) for detecting hung up/picked up line, which provides a signal showing whether the line is open or closed, a device (2) for closing or opening the line (7), which provides the data to be transmitted, a device (3) for detecting a conventional call, a module (4) for exterior connection, a power supply circuit (5), which receives electrical current from the telephone line (7) itself and control means (6) which, on receiving a signal through the connection module (4), transmit an appropriate signal to the device (2) for closing and opening the line (7), which transmits the data of a message to be transmitted.

REFERENCES:
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patent: 4644103 (1987-02-01), Rosenfeld
patent: 4833618 (1989-05-01), Verma et al.
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patent: 5434911 (1995-07-01), Gray et al.
patent: 5677947 (1997-10-01), Oliver
patent: 5815558 (1998-09-01), Bradley et al.
patent: 6347135 (2002-02-01), Xia et al.
patent: 6690677 (2004-02-01), Binder
patent: 7003102 (2006-02-01), Kiko

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