Automatic mode changing method for car audio system with hands-free therein

• US 6,980,837 B2
• Filed: 11/25/2003
• Issued: 12/27/2005
• Est. Priority Date: 09/06/2003
• Status: Expired due to Fees

• Current Assignee: Hyundai Autonet Co Ltd (Hyundai Mobis Co., Ltd.)
• Original Assignee: Hyundai Mobis Co., Ltd.
• Inventors: Chung, Chang-Ho
• Primary Examiner(s): LE, DANH C
• Application Number:
  US10/720,338
• Publication Number:
  US 20050054386A1
• Time in Patent Office: 763 Days
• Field of Search: 455/569.2, 455/569.1, 455/575.9, 340/540, 340/539.1, 379/387.01
• US Class Current: 455/569.2
• CPC Class Codes: H04B 1/082 to be used in vehicles H04B1/086 takes precedence; holding or mounting accessories B60R11/02
• CPC Class Codes: H04M 1/6083 by interfacing with the vehicle audio system

Abstract

The present invention relates to an automatic mode converting method between an audio mode and a hands-free mode for a hands-free built-in car audio system of which a car audio function is organically combined with a hands-free function, in which the mode changing is carried out, depending on whether there is a voice signal output from a mobile phone. The automatic mode converting method, wherein the car audio system has a mode converting function conducting mode conversion between a hands-free mode for outputting a received voice signal from a mobile phone and an audio mode for outputting an audio sound source of the car audio system, includes the steps of: deciding whether a DTMF tone signal is input from the mobile phone; if the DTMF tone signal is input from the mobile phone, converting a current mode to the hands-free mode; and if a duration time of a greater level of the received voice signal from the mobile phone than a predetermined reference level lasts longer than a predetermined reference time, automatically converting the current mode to the audio mode.

Claims

1. An automatic mode converting method for a car audio system with a hands-free therein, wherein the car audio system has a mode converting function conducting mode conversion between a hands-free mode for outputting a received voice signal from a mobile phone and an audio mode for outputting an audio sound source of the car audio system, the method comprising:

deciding whether a DTMF tone signal is input from the mobile phone;

converting a current mode to the hands-free mode, if the DTMF tone signal is input from the mobile phone; and

automatically converting the current mode to the audio mode, if a duration time of a greater level of the received voice signal from the mobile phone than a predetermined reference level lasts longer than a predetermined reference time.

2. The method according to claim 1, further comprising:

converting the current mode to the audio mode, regardless of whether or not the reference time is passed, if a manual operation key signal of the mode conversion function is input.