Patent · US Expired

Ultrasonic proximity detector for a telephone device

US7010098B2 · kind B2 · utility

15Cited by

13References

10Claims

0Family size

Assignee

Mitel Corporation · CA

Inventors

Philippe Moquin · Gatineau, CA
Stephane Dedieu · Ottawa, CA

Key dates

Filing date	Sep 6, 2001
Grant date	Mar 7, 2006
Priority date	—
Expiry date	Jul 8, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH04M2250/12
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

An ultrasonic proximity detector for a telephone device to detect the proximity of an object thereto includes an ultrasound signal generator generating ultrasound that is broadcast by a speaker of the telephone device. Processing circuitry is coupled to a microphone of the telephone device. The processing circuitry processes broadcast ultrasound that is picked up by the microphone to detect the proximity of an object to the telephone device.

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