Mobile phone hand-free extension device

Details Mobile phone hand-free extension device Mobile phone hand-free extension device

2005-08-09

2005-08-09

Trost, William (Department: 2683)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S569100, C455S575100, C455S575900, C455S550100

Reexamination Certificate

active

06928308

ABSTRACT:
A mobile phone hand-free extension device includes a FM radio transmitter with an active frequency searching circuitry to utilize a vehicular FM radio receiver for reproducing the audio signals from the mobile phone. The active frequency searching circuitry in this invention automatically detects which frequency band the vehicular FM radio receiver is currently using and set the RF frequency of the FM transmitter to the detected frequency. The FM transmitter relays the audio signals from the mobile phone by transmitting the audio signals through radio wave to the vehicular FM radio receiver to be reproduced by the speaker of the receiver.

REFERENCES:
patent: 5457815 (1995-10-01), Morewitz, II
patent: 5613232 (1997-03-01), Toshida et al.
patent: 5867794 (1999-02-01), Hayes et al.
patent: 5987305 (1999-11-01), Reitberger
patent: 6134456 (2000-10-01), Chen
patent: 2003/0036357 (2003-02-01), McGowan
patent: 2003/0054855 (2003-03-01), Kojola et al.
patent: 2004/0038716 (2004-02-01), Gass
patent: 2001111680 (2001-04-01), None

Affiliated with

Also associated with

Rating

Mobile phone hand-free extension device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mobile phone hand-free extension device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mobile phone hand-free extension device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3441807