Portable telephone with a speaker having an improved acoustic ch

Details Portable telephone with a speaker having an improved acoustic ch Portable telephone with a speaker having an improved acoustic ch

1996-03-27

1999-03-16

Le, Huyen

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Mounting or support feature of housed loudspeaker

381345, 379433, 455575, 455 90, H04R 2500

Patent

active

058839666

ABSTRACT:
In a thin foldable telephone or similar portable telephone, a speaker is mounted on an exclusive speaker casing mounted on the body casing of the telephone. The speaker casing is automatically protruded from the body casing when the telephone is used, or retracted into the body casing when the telephone is not used.

REFERENCES:
patent: 5461672 (1995-10-01), Enokido et al.
patent: 5603100 (1997-02-01), Yasuda
patent: 5668867 (1997-09-01), Nagai

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