Browse Prior Art Database

REMOTE CONTROL CHANNEL SCAN WITH TALKBACK

IP.com Disclosure Number: IPCOM000005827D
Original Publication Date: 1990-Mar-01
Included in the Prior Art Database: 2001-Nov-09
Document File: 1 page(s) / 50K

Publishing Venue

Motorola

Related People

Doug Eaton: AUTHOR [+2]

Abstract

The traditional operation of channel scan in a base station/console system has the console operator remotely con- trolling the activation of the receiver scan mode in the base station. This allows the station receiver to begin scanning as many as 8 different channels. When receiver activity is detected on one of the scanned channels the audio will be directed to the console operator At this point the operator hears the channel activity but has no visual indication or other means to tell him which channel he is monitoring. Therefore he does not know which channel to transmit back on.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 72% of the total text.

Page 1 of 1

MOlYlROLA Technical Developments Volume 10 March 1990

REMOTE CONTROL CHANNEL SCAN WITH TALKBACK

by Doug Eaton and Ron Hansen

Statement of Problem

   The traditional operation of channel scan in a base station/console system has the console operator remotely con- trolling the activation of the receiver scan mode in the base station. This allows the station receiver to begin scanning as many as 8 different channels. When receiver activity is detected on one of the scanned channels the audio will be directed to the console operator At this point the operator hears the channel activity but has no visual indication or other means to tell him which channel he is monitoring. Therefore he does not know which channel to transmit back on.

   In order for the console operator to identify a scanned channel some kind of signalling must be sent back to the console when receiver activity is detected. The most practical means of accomplishing this is by using Tone Remote control. The basic operation would use 8 function tones for channel select commands, two for scan on/off and two for exclude/include channels. When channel activity causes the scan to stop on a channel the station will send back the corresponding function tone that is normally used to select that channel. No additional hardware in the base station is needed to generate this feature.

The console then will decode the function tone received and display by means of LED panel the channel that is active. The operator can im...