KR20010027960A - Wireless Hands Free Kit For Cell ular Phone - Google Patents

Abstract

PURPOSE: The wireless hands-free unit for a cellular phone is provided to enable a cellular phone subscriber to call conveniently when the subscriber wants to make a call via the cellular phone. CONSTITUTION: A handset(100) includes a microphone(4) for converting a voice signal to an electric signal, a modulator(5) for modulating the signal output from the microphone(4) to a radio signal, and a transceiver(3) for transmitting the output signal of the modulator(5) and receiving a radio input signal. The handset(100) further includes a de-modulator(2) for demodulating the signal received from the transceiver(3), a speaker(1) for converting the demodulated signal to a voice signal, and an incoming switch(6) for enabling the incoming of a signal. A terminal interface part(200) includes a transceiver(7) for transmitting and receiving a signal to/from the handset(100), a de-modulator(9) for demodulating the signal received from the handset(100), a modulator(8) for modulating the signal applied from a terminal, a transmission reception part(10) for transmitting and receiving the signal received from the handset(100) to/from the terminal, and an incoming switch(11).

Description

Wireless Hands Free Kit for Cell Phones {Wireless Hands Free Kit For Cell ular Phone}

The present invention relates to a device for transmitting and receiving a call of a cellular phone user, and more particularly, to an apparatus for wirelessly implementing a conventional wired hands-free function that enables a user to make a call without directly lifting a terminal.

The present invention relates to a call apparatus for facilitating a user's call when a mobile subscriber wants to make a call with a cellular phone.

Currently, wired hands-free consisting of earphones and microphones are widely used for the convenience of mobile phone subscribers. The use of wired handsfree has brought a lot more convenience to the user when talking on the phone with a conventional mobile phone, but since wired handsfree literally gives users the freedom of "hands", it is also "wired". In some cases, the user's activity is somewhat limited.

It is an object of the present invention to provide users with more freedom and convenience of activities that wired handsfree cannot provide.

1 is a block diagram of a wireless handsfree kit for a mobile phone according to the present invention.

Figure 2 is a detailed block diagram of the modulation / demodulation in the wireless handsfree kit for a mobile phone according to the present invention.

<Description of the code | symbol about the principal part of drawing>

100: handset donation

1: Speaker (converts electrical signals to audio signals)

2: demodulator (demodulates signals)

3: Transceiver (Wireless transmission / reception)

4: microphone (converts voice signal to electric signal)

5: modulator (modulates the signal)

6: Incoming switch (response switch when receiving call)

200: terminal matching unit

7: Transceiver (Wireless transmission / reception)

8 modulator (modulates a signal)

9: demodulator (demodulates signals)

10: terminal transceiver (transmit / receive to terminal)

11: incoming call switch (response switch when receiving call)

12: mobile communication terminal

300: modulator

13: voice signal before modulation

14,23: frequency converter

15,21: frequency generator

16: encoder

17, 22: scrambler

18, 25: amplifier

19: Modulated and Encrypted Signal

400: demodulator

20: demodulated voice signal

24: decoder

Hereinafter, with reference to Figure 1 which is a block diagram of a wireless handsfree kit for a mobile phone according to the present invention will be described in detail.

The wireless hands-free kit of the present invention comprises a handset unit 100 and a terminal matching unit 200.

The handset unit 100 includes a microphone 4 for converting a voice signal from a user into an electric signal, and a modulator 5 for modulating a signal output from the microphone 4 into a signal for wireless transmission. Transceiver 3 for transmitting a modulated signal wirelessly or receiving a signal input wirelessly, a demodulator 2 for demodulating a signal received from the transceiver, converting the demodulated signal to a voice signal Speaker (1), consisting of the incoming switch 6 for receiving when the bell rings when incoming.

The terminal matching unit 200 is wired to a cell phone through an ear jack of the mobile communication terminal 12 and wirelessly transmits to a handset and receives a signal from the handset (Transceiver) ( 7) a demodulator 9 for demodulating the signal received from the handset to the terminal, a modulator 8 for modulating the signal received from the terminal to the handset, and a wired and wired signal received from the handset. It consists of a terminal transceiver 10 and the incoming switch 11 for receiving a signal from the terminal.

According to the present invention of such a configuration, when the bell rings in the telephone, the terminal transceiver 10 detects a signal and automatically arrives, or can be received through the incoming switch 11 in the terminal matching unit 200. In addition, the call can be received by the incoming switch 6 of the handset 100.

Figure 2 is a detailed block diagram of the modulation / demodulation in the wireless handsfree kit for a mobile phone according to the present invention. Hereinafter, the present invention will be described in more detail with reference to FIGS. 1 and 2.

When the call is connected, the incoming signal is modulated by the voice signal through the handset 100, and the modulated signal is encrypted by the encoder 16 to prevent eavesdropping and then wirelessly transmitted to the handset through the transceiver.

The signal received through the transceiver 3 in the handset unit 100 is decoded by the decoder 24 and then demodulated and converted into an audible frequency through the speaker 1 or earphones.

The voice signal 13 of the user is converted into an electrical signal through the microphone 4, modulated and encrypted by the modulator 5, and then wirelessly transmitted to the terminal matching unit 200 through the transceiver.

The signal 20 received through the transceiver 7 of the terminal matching unit 200 is demodulated and decrypted through the demodulator 9, and then a voice signal is transmitted to the terminal via the terminal transceiver 10.

The wireless handsfree kit of the present invention implements a conventional wired handsfree kit wirelessly and adds an eavesdropping function to guarantee freedom of activity to a mobile phone user, and has excellent communication and eavesdropping prevention characteristics.

Claims (2)

A microphone 4 for converting a voice signal from a user into an electric signal, a modulator 5 for modulating a signal output from the microphone 4 into a signal for wireless transmission, and a modulated signal Transceiver 3 for wirelessly transmitting or receiving a signal input wirelessly, a demodulator 2 for demodulating a signal received from the transceiver, a speaker for converting the demodulated signal to a voice signal (1), the handset unit 100 consisting of an incoming switch 6 for receiving when the bell rings when the incoming, and Transceiver 7 for transmitting to the handset and receiving signals from the handset wirelessly, a demodulator 9 for demodulating the signal received from the handset to the terminal, and transmitting the signal received from the terminal to the handset. It consists of a modulator (8) for modulating, a terminal transceiver (10) and a terminating switch (11) for transmitting a signal received from a handset and receiving a signal from a terminal by wire. Wireless hands-free kit for a mobile phone, characterized in that it comprises a terminal matching unit 200 is connected to the terminal (Cellular Phone) by wire through an jack (Earjack). The radio hands-free kit according to claim 1, characterized in that the singer modulator (5, 8) encrypts the signal by the encoder (16) for communication and prevention of eavesdropping.