Patent · US Expired

Circuit connecting a voice-controlled device to a telephone station and line

US4837808A · kind A · utility

10Cited by

13References

7Claims

0Family size

Assignee

Alcatel N.V. · NL

Inventors

Manfred Immendorfer · Ditzingen, DE
Dieter Kopp · Hemmingen, DE
Thomas Hormann · Bornsteiner Straße, DE

Key dates

Filing date	Oct 13, 1987
Grant date	Jun 6, 1989
Priority date	—
Expiry date	Oct 13, 2007

Classification

Technology area (CPC H)Electricity
CPC primaryH04Q3/42
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

The present invention is directed to a circuit arrangement for connecting a voice-controlled additional facility associated with a telephone station to a telephone line. According to the invention a telephone station (32) is connected with a voice-controlled additional facility (2). The additional facility (2) performs voice-controlled telephone dialing and/or voice-controlled operation of a videotex terminal. This is implemented by a connection unit (14) inserted in the telephone line (16). The connection unit (14) cooperates with the exchange to permit calls to be initiated, in the known manner, by means of a keypad at the telephone station (32). Any type of telephone station (32) can be connected to the voice-controlled additional facility (2) without any engineering modifications.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.