Browse Prior Art Database

INTEGRATED ALARM SYSTEM AND CORDLESS PHONE

IP.com Disclosure Number: IPCOM000005984D
Original Publication Date: 1990-Oct-01
Included in the Prior Art Database: 2001-Nov-22
Document File: 4 page(s) / 127K

Publishing Venue

Motorola

Related People

Morris Anthony Moore: AUTHOR

Abstract

In the very near future, personal communications systems such as the CT-2 system going into service in the U.K. and the DECT system under development in Europe will be wide spread. As these and similar systems become available, personal wmmunications devices such as cordless phones will be carried at all times. The same unit will serve as your cordless phone at home, business cordless phone at work, and will provide access to a network of telepoint units (wireless phone booths) elsewhere. It may even serve as a wireless access device communicating with a mobile pro- tocol converter to utilize wide area cellular systems. In this context and in the residential cordless application, it is possi- ble to integrate the functions of the cordless phone with an alarm system.

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Page 1 of 4

0 M MO-ROLA

Technical Developments Volume 11 October 1990

INTEGRATED ALARM SYSTEM AND CORDLESS PHONE

by Morris Anthony Moore

   In the very near future, personal communications systems such as the CT-2 system going into service in the U.K. and the DECT system under development in Europe will be wide spread. As these and similar systems become available, personal wmmunications devices such as cordless phones will be carried at all times. The same unit will serve as your cordless phone at home, business cordless phone at work, and will provide access to a network of telepoint units (wireless phone booths) elsewhere. It may even serve as a wireless access device communicating with a mobile pro- tocol converter to utilize wide area cellular systems. In this context and in the residential cordless application, it is possi- ble to integrate the functions of the cordless phone with an alarm system.

   This could be done on two levels. At the first level, the alarm system is separate and is only activated and deac- tivated under control of the personal communications base. Figure 1 (a) shows the portable communicating with the base via RF. The base is connected to the fixed telephone network via normal local loop wnnections means.

RF link

iTi"-

Personal Communicator

Fixed Base station

*

Phone line connection

Activate/

De-activate _ Alarm System Control Line

Figure 1 (a) Fixed System

0 Motorola, Inc. 1990 a2

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Page 2 of 4

MOZOROLA Technical Developments Volume 11 October 1990

Figure 1 (b) shows how this might also be done in mobile applications. The base may be a protocol translator into a cellular system or other wide area wireless wmmunications system.

RF link

PY

RF link to Wide-area System

Mobile

Personal

Communicator

Translator/ Base station

Activate/ De-activate - Alarm System Control Line

Figure 1 (b) Mobile System

   The key element is the addition of the line to a security (alarm) system and an algorithm which uses this interface in conjunction with knowledge of whether the portable is in the coverage area of the base to activate and deactivate the alarm system. The portable communicates at regular intervals with the base when it is within its range. This allows the base to monitor whether one of its assigned portables is "at home". If none of the assigned portables (there may be only one) is within rang...