KR19990064931A - Radio ear-mic - Google Patents

Abstract

This display relates to a radio ear-microphone with a radio function added to the hand-free ear-microphone connected to the CELLULAR PHONE (hereafter referred to as a mobile phone).

The present invention has a built-in radio signal output means capable of performing a radio function in the control unit of the middle of the ear-mic, to control the operation of the radio from outside the control unit, the power of the radio to supply its own power It can be used and can be used to supply power to the phone.

Description

Radio ear-microphone {RADIO EAR-MIC}

As mobile phones become widespread, it is common to use hand-free ear microphones to perform other tasks at the same time as telephone calls.

However, in such a case, it is difficult to use the ear-microphone only for making a call and to use it for other purposes when the call is not made. Therefore, the frequency or class of use is extremely limited to always be mounted on the mobile phone.

In case of making a call, the microphone is used after the call, but when the call is not made, it is used as a radio so that it can be always carried and used to maximize the efficiency of the use.

The present invention relates to a hand-free ear microphone, and more particularly, to a radio ear microphone capable of performing a radio function as well as using an ear microphone.

In general, the ear-mic is equipped with a receiver that can be mounted on a mobile phone to hear the voice of the other party and a transmitter that sends its own voice to the other party.

Therefore, in the past, the existing earphones or microphones, which use separate ones, are generally incompatible with the product, and thus, there is no use other than a mobile phone that can simply use an ear-mic. There was a problem that is limited to a short time, but by adding a radio circuit to the control unit when not making a call to listen to the radio to expand the use of the use.

① To maximize the efficiency of the antenna for receiving radio signals for listening to the radio.

② When using its own power supply, it is necessary to replace the consumable battery, so that the mobile phone's power is supplied stably so that it can be used stably at all times.

③ In the future, when a JACK that can use an external power source is used in a mobile phone, the modified PLUG of the present invention can be used.

1 and 1-1 are representative views of an ear-mic with a radio function according to the present invention.

2 and 2-2 show the whole perspective view of the present invention.

(1) CELLULAR PHONE (2) EAR MIC JACK (3) PHONE PLUG

(4) FUNCTION BUTTON (5) SEARCH BUTTON (6) VOLUME CONTROL BUTTON

(7) RESET BUTTON (8) MIC (9) SPEAKER

3 and 3-3 are a working principle diagram of an ear-mic with a radio function according to the present invention.

Missing configuration and action of the invention

Missing Effect of Invention

Schematic description

1. General

-Operating Power: DC 1.8V ~ 5V

Operating Current: 4.2mA ~ 6.6mA

-Operating temperature: -10 ℃ ~ 70 ℃

-Storage temperature: -55 ℃ ~ 150 ℃

2. Power Supply

-BT1's DC 3V power is supplied to the circuit when SW101 is located at RADIO ON to enable RADIO listening.

-When making a telephone call or not listening to the radio, switch off the power supply of BT1 by switching SW101 (FUCNTION BUTTON) to TALK (Fig. 3).

-When making a telephone call, press SW101 (FUCNTION BUTTON) to connect with the other party. (Fig. 3-1)

3. Signal receiver

-The signal received through the antenna is input to PIN11, 12 of U1 through C7, C6, L2.

4. Frequency control part

-When SW2 (SEARCH BUTTON) is pressed, the circuit automatically starts searching in the frequency direction higher than the current position to find the strongest signal received first.

-At this time, the FM frequency band (88MHz ~ 108MHz) is searched. When searching from low frequency to high frequency, and when the highest frequency is 108MHz, no further searching is performed.

-Press SW1 (RESET BUTTON) to switch to the lowest frequency.

5. Voice transmitter

-User's voice is input to MIC1 and transmitted to MIC terminal of JP1.

6. Voice receiver

-Sound from the radio signal is output to SP1 from the PIN2 AF OUTPUT of U1.

-In a telephone call, the other party's voice is output to SP1 through the JP1 SPK terminal.

7. Volume control

-The intensity of the signal output to EAR-PHONE is controlled by RV101 (VOLUME CONTROL BUTTON).

Claims (1)

This product relates to a radio ear-mic with a radio function added to the hand-free ear-microphone connected to CELLULAR PHONE (hereafter referred to as a mobile phone). It can also be used as a portable radio with earphones. The present invention has a built-in radio signal output means capable of performing a radio function in the control unit of the middle of the ear-mic, to control the operation of the radio from outside the control unit, the power of the radio to supply its own power It can also be used, and it can be used to supply power to the phone.