Speaker-phone base for a portable telephone

Details Speaker-phone base for a portable telephone Speaker-phone base for a portable telephone

2000-06-10

2004-08-24

Chiang, Jack (Department: 2642)

Telephonic communications

Terminal

Having loudspeaking conversation capability

C379S446000

Reexamination Certificate

active

06782099

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to telephone systems and, more specifically, to a speaker-phones.
2. Description of the Prior Art
Portable telephones, such as cellular telephones, often have attachments that allow hands-free operation. Some such attachments include headset systems and also speaker-phone attachments. Speaker-phone attachments allow the user to turn the portable telephone into a speaker-phone by tapping the audio signal from the portable telephone, amplifying it and sending it to a speaker. Such attachments usually require connecting a jack on the telephone to the speaker-phone attachment via a loose wire terminated by a plug. Plugging the plug into the jack can be awkward and the loose wire sometimes gets tangled with other wires.
Therefore, there is a need for a speaker-phone attachment for a portable telephone that allows direct connection.


REFERENCES:
patent: 5539821 (1996-07-01), Blonder
patent: 5822427 (1998-10-01), Braitberg et al.
patent: 6138041 (2000-10-01), Yahia

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