Wireless assembly comprising an ear pad and an intermediate module connected to a mobile telephone

• US 20040077387A1
• Filed: 09/23/2003
• Published: 04/22/2004
• Est. Priority Date: 03/30/2001
• Status: Abandoned Application

• Current Assignee: Alban Sayag, Philippe Rachel, Roland Sayag
• Original Assignee: Alban Sayag, Philippe Rachel, Roland Sayag
• Inventors: Sayag, Alban, Sayag, Roland, Rachel, Philippe
• Application Number:
  US10/472,448
• Publication Number:
  US 20040077387A1
• Time in Patent Office: Days
• US Class Current: 455/575.2
• CPC Class Codes: H04M 1/05 specially adapted for use on head, throat or breast
• CPC Class Codes: H04M 1/6066 including a wireless connection

Abstract

The system comprises an ear-piece (2) and an intermediate module (3) connected to the mobile telephone (1). The ear-piece and intermediate module communicate with one another in half-duplex transmission under the control of the ear-piece via a wireless radio link at a frequency of less than 1 GHz, preferably at 434 MHz. The audio signals from the telephone or the ear-piece are converted into digital form before being transmitted by a digital transmission-receipt circuit using phase modulation. The transmitted signals are reconverted into analog form before being applied to a receiver (4) of the ear-piece or to an audio input of the telephone. A control button (19) located, on the ear-piece can enable the ear-piece to be powered on, the telephone to be remotely connected and disconnected, and a microphone (5) of the ear-piece to be actuated when the microphone is telescopic. This system enables hands-free use of the telephone without any health hazards.

Claims

1. A wireless system comprising an ear-piece (2) and an intermediate module (3) connected to a mobile telephone (1), the ear-piece and intermediate module both comprising a transmission-receipt circuit (18, 12) to communicate digital data to one another at a preset transmission frequency, a system characterized in that the transmission-receipt circuits (18, 12) of the ear-piece and intermediate module are digital transmission-receipt circuits using phase modulation, the ear-piece and intermediate module communicating digital data to one another in half-duplex transmission at a frequency of less than 1 GHz under the control of respective microprocessor-based control circuits (17, 11) connected to the digital transmission-receipt circuits, the control circuit (17) of the ear-piece (2) supplying synchronisation signals to the control circuit (11) of the intermediate module (3).

2. The system according to claim 1, characterized in that the ear-piece (2) and intermediate module (3) both comprise:

an audio output (14, 8) connected to a receiver (4) in the ear-phone and to an audio input of the telephone in the intermediate module,

an audio input (13, 7) connected to a microphone (5) in the ear-piece and to an audio output of the telephone in the intermediate module,

an analog-to-digital conversion circuit (15, 9) connected between the audio input (13, 7) and the associated control circuit (17, 11), and

a digital-to-analog conversion circuit (16, 10) connected between the control circuit (17, 11) and the associated audio output (14, 8).

3. The system according to one of the claims 1 and 2, characterized in that the transmission frequency is 434 MHz.

4. The system according to one of the claims 1 and 2, characterized in that the transmission frequency is 868 MHz.

5. The system according to any one of the claims 1 to 4, characterized in that a pre-determined digital address is assigned to each system, the control circuits (17, 11) of the ear-piece (2) and of the intermediate module (3) inserting this address in the data to be transmitted.

6. The system according to any one of the claims 1 to 5, characterized in that, as the ear-piece (2) comprises means (20) for providing an electrical power supply to the ear-piece and a control button (19), the latter controls both power supply of the ear-piece and connection and disconnection of the telephone via the intermediate module (3), whose control circuit (11) is connected via a control output (21) of the intermediate module to a control input of the telephone.

7. The system according to claim 6, characterized in that the intermediate module (3) is a standard module connected to the telephone (1) by a connector (23) comprising a micro-processor (28) containing the specific communication protocol of the telephone (1) to which it is connected.

8. The system according to one of the claims 6 and 7, characterized in that the micro-phone (5) of the ear-piece (2) is telescopic and is actuated automatically by the control button (19) of the ear-piece.