Receiver and portable communication device

Details Receiver and portable communication device Receiver and portable communication device

2005-02-08

2005-02-08

Le, Huyen D. (Department: 2643)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S417000, C381S386000, C381S396000

Reexamination Certificate

active

06853735

ABSTRACT:
An electromagnetic receiver of a balanced armature type is employed as a receiver to be mounted in a portable telephone. The balance armature receiver has lower power consumption and higher electric acoustic conversion efficiency. The balanced armature receiver provides a required output even though small in size. The receiver occupies a considerably reduced space in the portable telephone, compared with a conventional portable telephone having a conventional dynamic receiver. The longitudinal wall of the receiver is parallel to the upper edge of a liquid crystal display panel, so that the liquid crystal display panel is extended upward and considerably enlarged.

REFERENCES:
patent: 3588383 (1971-06-01), Carlson
patent: 5461672 (1995-10-01), Enokido et al.
patent: 6078677 (2000-06-01), Dolleman et al.

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