Mobile phone call receiving device capable of automatically turning off car stereo

• US 20030104834A1
• Filed: 12/05/2001
• Published: 06/05/2003
• Est. Priority Date: 12/05/2001
• Status: Abandoned Application

• Current Assignee: Mao-Shen Wang
• Original Assignee: Mao-Shen Wang
• Inventors: Wang, Mao-Shen
• Application Number:
  US10/001,955
• Publication Number:
  US 20030104834A1
• Time in Patent Office: Days
• US Class Current: 455/557
• CPC Class Codes: H04B 1/082 to be used in vehicles H04B1/086 takes precedence; holding or mounting accessories B60R11/02
• CPC Class Codes: H04B 1/20 for coupling gramophone pick-up, recorder output, or microphone to receiver
• CPC Class Codes: H04M 1/6083 by interfacing with the vehicle audio system

Abstract

Mobile phone call receiving device capable of automatically turning off car stereo for a user to safely use the mobile phone when driving. The device includes: a main frame for sensing a radio-frequency signal input by the mobile phone and sending out a carrier signal and an extension which according to the carrier signal turns off the car stereo or silences the car stereo. When receiving a mobile phone call, the device is able to turn off the car stereo or silence the car stereo so that a user can concentratively use the mobile phone without minding turning off or silencing the car stereo.

Claims

1. Mobile phone call receiving device capable of automatically turning off car stereo for a user to safely use the mobile phone when driving, the device comprising:

a main frame for sensing a radio-frequency signal input by the mobile phone and sending out a carrier signal; and

an extension which according to the carrier signal turns off the car stereo or silences the car stereo.

2. Device as claimed in claim 1, wherein the main frame includes:

a mobile phone high frequency sensing amplifier which via an antenna senses and amplifies the radio-frequency signal sent out by the mobile phone;

a microprocessor coupled with the mobile phone high frequency sensing amplifier for calculating the time of radio-frequency signal, whereby when the radio-frequency signal lasts for over 3 seconds, the microprocessor sends out an oscillation control signal;

a carrier oscillation circuit coupled with the microprocessor, whereby when receiving oscillation control signal, the carrier oscillation circuit sends out a carrier oscillation signal;

a power plug coupled with the carrier oscillation circuit for transmitting the carrier oscillation signal via a power wire;

a choke coil coupled with the power plug for choking the carrier oscillation signal of the power plug to output D.C. power;

a stabilizing circuit coupled with the choke coil for stabilizing the D.C. power and then outputting the D.C. power;

an amplifier for amplifying the mobile phone earphone signal input; and

an output plug coupled with the amplifier for externally connecting with a speaker for outputting audiofrequency signal.

3. Device as claimed in claim 1, wherein the carrier oscillation signal is 27 MHz.

4. Device as claimed in claim 1, wherein the extension includes:

a carrier filter coupled with the ACC power wire for filtering carrier oscillation signal;

a high frequency choke filter circuit coupled with the ACC power wire for choking the carrier oscillation signal to provide D.C. power;

an amplifier coupled with the carrier filter for amplifying the carrier oscillation signal;

a wave detector coupled with the amplifier for detecting a half-period carrier oscillation signal;

a driving amplifier coupled with the wave detector for amplifying the half-period carrier oscillation signal; and

an interrupter coupled with the high frequency choke filter circuit, the driving amplifier and a silencing input wire, whereby when the half-period carrier oscillation signal appears, the interrupter cuts off the ACC power wire to turn off the car stereo or grounds the silencing input wire to silence the car stereo.