Browse Prior Art Database

IMPROVED TONE DETECTOR

IP.com Disclosure Number: IPCOM000005878D
Original Publication Date: 1990-Mar-01
Included in the Prior Art Database: 2001-Nov-13
Document File: 2 page(s) / 108K

Publishing Venue

Motorola

Related People

Authors:
Richard A. Erhart Michael J. DeLuca

Abstract

This paper describes a way to allow some simple hardware to be used to distinguish between very tightly spaced frequencies or tone signals. The hardware is purely digital in operation and can be programmed for a multitude of various tones with spacings as low as perhaps 5hz. This idea could also be used to distinguish between any tightly spaced baud rates for binary codes.