Title:
TELEPHONE SET TERMINAL USING BONE CONDUCTION TYPE EAR MICROPHONE AND EAR MICROPHONE CONNECTOR
Document Type and Number:
Japanese Patent JPH0766861
Kind Code:
A
Abstract:
PURPOSE: To obtain the telephone set terminal and the connector used therefor using a bone conduction type ear microphone preventing howling and able to make clear transmission reception.
CONSTITUTION: A bone conduction type ear microphone 12 is connected to an external connection terminal 16 of a handset via a connector 11. A vibration acceleration sensor type microphone 24 is adopted for a transmitter of the bone conduction type ear microphone 12 and a transmission signal level is controlled by a reception signal level of the connector 11.
Inventors:
MIYASHITA FUMIAKI
TAKASAKI TORU
TAKASAKI TORU
Application Number:
JP21289393A
Publication Date:
March 10, 1995
Filing Date:
August 27, 1993
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE
SANPO SANGYO KK
SANPO SANGYO KK
International Classes:
H04M1/60; (IPC1-7): H04M1/60
Attorney, Agent or Firm:
Takehiko Suzue
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