Inventors:
Dong Tran - San Francisco CA, US
International Classification:
H04B003/00
Abstract:
The Stereonet Device is a switching device that contains two stages of a switching circuit. This device is for the user to input another source of an audio signal and a voice pick-up microphone audio signal to their stereo system. The users of this invention are mostly automobile drivers or passengers. This device will work with almost every stereo system in the market today. It may become a crucial stereo adapter and an important feature for future automobile stereo systems. The other source of audio signals mentioned above can be car in-dash CD players, cassette players, CD changers, portable cassette players, portable CD players, MP3 players, notebook computers, cellular phones, or any other audio signal source. The voice pick-up microphone audio signal mentioned above is a microphone on a clipper that can be clamped to the cellular phone to pick up the voice sound and convert it to audio signal input to the Stereonet Device. With the cellular phone placed in the holder, the driver has his hands free while talking on the cell phone and listening to the other party through the car stereo system speakers. There are many cellular phones with a voice dialer function in the market currently, allowing car drivers to talk on the phone in the car totally hands free with the Stereonet Device. The Stereonet Device can connect to the stereo system either before or after the volume control section of the stereo unit. It will input the signal from the pre-amp section of the stereo unit, and output the signal to the power-amp section of the stereo unit. The Stereonet Device only deals with switching analog audio signals. It doesn't generate any RF signals, and thus will not do any harm to any appliance surrounding it. The Stereonet Device also has an external output to let the user add an external amplifier and/or subwoofer amplifier to their stereo systems. The Stereonet Device has its own volume control to adjust volume level of the external source input signal and cellular phone volume. This will not mess up the user's stereo system's volume settings, and avoid excessively low or loud audio volume when switched back to the user's stereo system.
