Title:
改良されたハンドセット型送受話器
Document Type and Number:
Japanese Patent JP2007516653
Kind Code:
A
Abstract:
An improved telephone handset for hearing-impaired persons. A passive device, in the form of an inductor wound about a highly magnetostrictive core, is connected with the speaker in the handset. The device has been found to improve intelligibility of speech delivered by the handset, when perceived by persons afflicted with certain types of hearing impairment.
Inventors:
Jerkin, Brett William
Barrie, Joan Birger
Barrie, Joan Birger
Application Number:
JP2006533665A
Publication Date:
June 21, 2007
Filing Date:
June 10, 2004
Export Citation:
Assignee:
Waldron, Joanne Phillips
Jerkin, Brett William
Barrie, Joan Birger
Jerkin, Brett William
Barrie, Joan Birger
International Classes:
H04M1/03; H04M1/00; H04M11/00; H04R25/00; H04M1/60
Domestic Patent References:
| JPH0445360Y2 | 1992-10-26 | |||
| JPS6374852A | 1988-04-05 | |||
| JP2000340426A | 2000-12-08 | |||
| JP2001044042A | 2001-02-16 | |||
| JPH09261797A | 1997-10-03 | |||
| JPS5513432A | 1980-01-30 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita