Wireless mobile telephone adapter for automobiles

Details Wireless mobile telephone adapter for automobiles Wireless mobile telephone adapter for automobiles

1997-10-27

2001-01-09

Hunter, Daniel S. (Department: 2749)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S575100

Reexamination Certificate

active

06173195

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to mobile telephone adapters, and more particularly to a wireless mobile telephone adapter for automobiles.
2. Description of the Prior Art
FIG. 1
shows a mobile telephone adapter for use in a car according to the prior art. This structure of mobile telephone adapter comprises a speaker
11
, a connector
1
for connection to socket for cigarette lighter of the car to receive power supply from it and to provide received power supply to the speaker
11
, a plug
14
for connection to a socket
13
of a mobile telephone
12
to receive caller's voice signal for output through the speaker
11
, a microphone
15
for receiving the user's voice signal for transmission to the caller through the mobile telephone
12
via the plug
14
, and an electric cable
16
connecting the plug
14
and the microphone
15
to the connector
1
through the speaker
11
. This structure of mobile telephone adapter has drawbacks. Because the plug
14
, the microphone
15
and the speaker
11
are connected together by the electric cable
16
and the electric cable
16
has a certain length, the whole assembly cannot be firmly retained in place. When driving, the microphone
15
tends to be shaken with the electric cable
16
, causing the transmission quality to be affected.
SUMMARY OF THE INVENTION
This invention relates to mobile telephone adapters, and more particularly to a wireless mobile telephone adapter for automobiles.
This invention has been accomplished to provide a wireless mobile telephone adapter for automobiles which eliminates the aforesaid problem. According to the present invention, the wireless mobile telephone adapter comprises a connector adapted for connecting to a socket of a mobile telephone to receive power supply and caller's signal from it, a first amplifier and a modulator circuit and a transmitter circuit connected in series to the connector and adapted to transmit caller's signal from the mobile telephone to a car radio, a microphone and a second amplifier connected in series to the connector and adapted to transmit the user's voice signal to the mobile telephone for output to the opponent's mobile telephone.


REFERENCES:
patent: 5367556 (1994-11-01), Marui et al.
patent: 5721783 (1998-02-01), Anderson
patent: 5802167 (1998-09-01), Hong
patent: 5867794 (1999-02-01), Hayes et al.

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