Foster Electric Company, Limited

Mitel Corporation

Takuro Yamaguchi

Yuichi Sakamoto

Hideo Koreeda

Yoshio Koike

Yoshinori Wada

Mark A Armstrong

A speaker system functioning as a stand capable of power supply to a mobile phone and hand-free communication and being capable of derived surround reproduction or stereo reproduction is provided. An enclosure (), on which a mobile phone is placed, includes therein supply means () for supplying electric power to the mobile phone, communication means () for enabling hand-free communication by the mobile phone through a microphone (), processing means for introducing signals from the mobile phone and performing a predetermined processing, and a pair of speakers (') provided on both sides of the enclosure in a state in which back sides thereof are substantially face to each other for generating sounds based on output signals from the processing means.

Speaker system

A receiver including a vibrator plate vibrating together with a voice coil in response to electrification of said voice coil which comprises an electrostatic discharge prevention plate having a central opening arranged above the vibrator plate with a small air gap provided therebetween. A metal cover around the top and sides of the receiver is imbedded in plastic for inhibiting electrostatic discharge via the cover. As a result the discharge path length through the air is substantially increased, reducing the likelihood of electrostatic discharge from the ear of the user.

Telephone receiver with electrostatic discharge prevention

Growing community of inventors

Tokyo, Japan

Takuro Yamaguchi