Koninklijke Philips Corporation N.v.

Anson William Wooding

Martin E Henderson

Alan David Brav

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

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Hudson, MA, United States of America

Anson William Wooding