Patent · US Active

Speakerphone and extension speakerphone for use in personal emergency response system

US8515022B2 · kind B2 · utility

4Cited by

3References

16Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Anson William Wooding · Hudson, US
Martin E. Henderson · Wayland, US
Alan Brav · Middleton, US

Key dates

Filing date	Jun 1, 2009
Grant date	Aug 20, 2013
Priority date	—
Expiry date	Mar 19, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04M1/715
WIPO fieldControl
WIPO sectorInstruments

Abstract

A personal emergency response system (PERS) includes a base unit (16) and one or more extension units (20). The base unit includes a speaker (64), a microphone (72), a telephone interface circuit (40), a microcontroller (46), and an autodialer (48). Each extension unit includes a speaker (164), a microphone (172), a telephone interface circuit (140), and a controller (146) without an autodialer. The base unit controller (46) and the extension unit controller (146) are programmed such that in a help mode, the base unit controller and the extension unit controller assume a master/slave relationship.

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