The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 19, 2002
Filed:
Feb. 08, 2000
Kyeong Ok Kang, Daejeon, KR;
Jin Woo Hong, Daejeon, KR;
Hee Soo Kim, Kyunggi-do, KR;
Ki Bang Lee, Seoul, KR;
Electronics and Telecommunications Research Insitute, Daejeon, KR;
Abstract
A telephone system is provided with a receiver equipped to enable a hearing-impair person to receive a telephone call through bone-conduction and air-conduction hearing. Such a receiver comprises a frame supporting a main vibration source including a cylindrical bobbin and a voice coil wound around the bobbin to convert a voice signal into a variation of a magnetic field; a vibration generator including a yoke arranged inside a lower portion of the bobbin, an electromagnet arranged on the yoke to create a gap with the bobbin, and an upper plate arranged on the electromagnet to support the electromagnet; an auxiliary vibration source including an air-conduction vibrator arousing air-conduction hearing and a bone-conduction vibrator arousing a bone-conduction hearing; and a vibration transmitter arranged to transmit vibrations from the main vibration source and the bone-conduction vibrator of the auxiliary vibration source to a transmission portion where a bone-conduction hearing transmission is selected for bone-conduction hearing.