Browse Prior Art Database

CT-2 TELEPOINT SITE LOCATOR

IP.com Disclosure Number: IPCOM000006132D
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2001-Dec-06
Document File: 1 page(s) / 60K

Publishing Venue

Motorola

Related People

Robert Stengel: AUTHOR [+2]

Abstract

The cordless telephone second generation (CT-2) requires wireless access within 300 yards of a telepoint terminal outside of the home base unit. A CT-2 user in an unfamiliar location may have difficulty in locating the closest telepoint site. This accessibility limitation would render the CT-2 communicator useless outside of familiar locations, such as during business or vacation travel. A simple means of determining the CT-Z unit location and comparing this with stored telepoint site information would provide the user with the nearest telepoint site location.

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MOTOROLA INC. Technical Developments :Volume 12 April 1991

CT-2 TELEPOINT SITE LOCATO~R

by Robert Stengel and Gary Rapps ~

  The cordless telephone second generation (CT-2) requires wireless access within 300 yards of a telepoint terminal outside of the home base unit. A CT-2 user in an unfamiliar location may have difficulty in locating the closest telepoint site. This accessibility limitation would render the CT-2 communicator useless outside of familiar locations, such as during business or vacation travel. A simple means of determining the CT-Z unit location and comparing this with stored telepoint site information would provide the user with the nearest telepoint site location.

  The CT-2 unit transmission range is limited by the less than 40 milliwatt RF transmitter power level. When the CT-2 unit is outside of the telepoint range there is no outbound communications, the portable transmission is too weak to be received and processed by the telepoint site receiver. However, the receiver could process location transmissions such as LORAN or GPS (Global Position System) and determine the CT-~'S location. The unit's location could then be

compared with Telepo~int site location information stored within the CT-2 memory. The unit's location, such as au address ,or longitude and latitude (determined by other equipment), could be entered into the unit with the keypad. Providing a location input or means of interfacing and processing location signals will give telep...