KR200257838Y1 - Opreating switch module of ear mic for handphone - Google Patents

Abstract

The present invention relates to an ear microphone for a mobile phone (EAE MICROPHONE), and more specifically, an ear microphone operation switch that can be commonly used in a CDMA (code division multiple access) terminal and a GSM (Global System for Mobile Communications) terminal. A module comprising: a first capacitor provided between one end of a speaker of an ear microphone and a speaker terminal of an ear microphone jack, a first resistor connected in parallel to the first capacitor, a first switch connected in series with the first resistor, And a second capacitor connected to the microphone in parallel with the microphone, a zener diode connected in parallel with the capacitor, and a second switch connected in parallel with the second capacitor and the zener diode and simultaneously opened and closed with the first switch. It is done.

According to the present invention, the same ear microphone can be sold for the CDMA terminal and the GSM terminal from the viewpoint of the manufacturer and the seller of the ear microphone, so it is not only easy to develop the market for the ear microphone, but also the user can replace the terminal according to the movement of the place. There is an advantage in using the same ear microphone.

Description

Ear microphone operation switch module for cell-phones {OPREATING SWITCH MODULE OF EAR MIC FOR HANDPHONE}

The present invention relates to an ear microphone for a mobile phone (EAE MICROPHONE), and more specifically, an ear microphone operation switch that can be commonly used in a CDMA (code division multiple access) terminal and a GSM (Global System for Mobile Communications) terminal. It is about a module.

Earphones for conventional mobile phones are manufactured and sold separately for CDMA terminals (including cellular phones and PCS phones) and GSM terminals. The ear microphone for a mobile phone is provided with an operation switch module that can generate a call and a call waiting signal of the mobile phone. In the case of a CDMA terminal, the mobile phone is connected through the speaker terminal ST of the ear microphone jack as shown in FIG. While a call and call waiting switch signal is generated and transmitted to the other hand, in the case of a GSM terminal, a call and call waiting switch signal is transferred to a mobile phone through a microphone terminal MT of an ear microphone jack, as shown in FIG. That is, a pulse is generated every time the switch S1 is turned on and off in FIG. 1A and is delivered to the mobile phone through the speaker terminal ST of the ear microphone jack, and the controller of the mobile phone is in a call state when a pulse is input while the mobile phone is waiting for a call. If a pulse is input in the call state, the control to switch to the call waiting state is performed. Also in FIG. 1B, whenever a switch S2 is turned on and off, a pulse is transmitted to the mobile phone through the microphone terminal MT of the generated door ear jack jack, and the control unit of the mobile phone is in a call state when a pulse is input while the mobile phone is waiting for a call. If a pulse is input in the call state, the control to switch to the call waiting state is performed.

Therefore, the mobile phone ear microphone is not compatible between the CDMA terminal and the GSM terminal, which is disadvantageous due to the limited quantity of a single model for the producer and seller, and the mobile communication method from the user's point of view to the business trip. If you go to this other place and talk, you will not be able to continue using your ear microphone.

Therefore, there is a need for a mobile phone ear microphone that can be used interchangeably regardless of the type of terminal.

The present invention solves the problems of the prior art described above, the technical problem to be achieved by the present invention is to provide an operation switch module for an ear microphone that can be used compatible with the CDMA terminal and GSM terminal.

Fig. 1A is a circuit diagram showing an operation switch structure of a conventional microphone for a CDMA terminal.

Figure 1b is a circuit diagram showing the structure of the operation switch of the conventional microphone for the ear microphone.

Figure 2 is a circuit diagram showing the operation switch wiring structure of the ear microphone for a mobile phone according to the present invention.

3a to 3c is a terminal pattern diagram of an ear microphone operation switch for a mobile phone according to the present invention.

4A is a plan view of a metal dome for a dome switch to be mounted on the terminal pattern shown in FIG.

Fig. 4B is a side view of the metal dome shown in Fig. 4A.

* Description of the symbols for the main parts of the drawings *

1: microphone 2: speaker 3: metal dome for dome switch

MT: Microphone terminal of ear microphone Jack ST: Speaker terminal of ear microphone Jack

The ear microphone operation switch module for a mobile phone according to the present invention includes a first capacitor provided between one end of an ear microphone speaker and a speaker terminal of an ear microphone jack, a first resistor connected in parallel to the first capacitor, and the first resistor. A first switch connected in series with the microphone, a second capacitor connected in parallel with the microphone at one end thereof, a zener diode connected in parallel with the capacitor, and a second switch connected in parallel with the second capacitor and the zener diode and simultaneously opened and closed with the first switch Characterized in that configured to include.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

Figure 2 is a circuit diagram showing the operation switch wiring structure of the ear microphone for a mobile phone according to the present invention. 2, one end of an ear microphone speaker is provided with an operation switch module for a conventional CDMA terminal. The pulse for operating the CDMA terminal is a first capacitor C1 'provided between one end of the ear microphone speaker and the speaker terminal ST of the ear microphone jack, and a first resistor R1' connected in parallel to the first capacitor. It may be generated by a first switch S1 ′ connected in series with the first resistor. The pulse for the operation of the GSM terminal is a second capacitor (C2 ') connected in parallel to the microphone at one end, the zener diode (Z2') and the second capacitor (C2 ') and the zener diode (Z2') connected in parallel to the capacitor ) May be generated by a second switch S2 ′ connected in parallel with

The present invention is configured such that the first switch (S1 ') and the second switch (S2') is always on and off at the same time, a switch structure for this configuration is shown in Figures 3 and 4.

3A to 3C are terminal pattern diagrams of an ear microphone operation switch for a mobile phone according to the present invention, and FIG. 4A is a plan view of a metal dome for a dome switch to be mounted on the terminal pattern shown in FIG.

3A to 3C, two terminals A 'and B' of the first switch S1 'and two terminals C' and D 'of the second switch S2' are integrally formed, The terminal pattern adopts one of the patterns shown in Figs. 3A, 3B or 3C. After the terminal pattern is formed on the substrate, a metal dome for the known dome switch shown in Figs. 4A and 4B is mounted thereon. When the dome of the switch thus formed is pressed and released, a momentary short occurs between the terminals shown in FIGS. 3A to 3D due to the elasticity of the metal dome, and then is opened. A pulse is generated and transmitted to the terminal ST and the microphone terminal MT.

In this way, one ear microphone can be used as a combination for a CDMA terminal and a GSM terminal.

According to the present invention, the same ear microphone can be sold for the CDMA terminal and the GSM terminal from the viewpoint of the manufacturer and the seller of the ear microphone, so it is not only easy to develop the market for the ear microphone, but also the user can replace the terminal according to the movement of the place. There is an advantage in using the same ear microphone.

Claims (2)

A first capacitor provided between one end of the ear microphone speaker and the speaker terminal of the ear microphone jack; A first resistor connected in parallel to the first capacitor; A first switch connected in series with the first resistor; A second capacitor connected in parallel with the microphone at one end of the microphone; A zener diode connected in parallel with the capacitor; And A second switch connected in parallel with the second capacitor and the zener diode and simultaneously opening and closing with the first switch; Ear microphone operation switch module for mobile phones, characterized in that configured to include. The dome switch of claim 1, wherein the first switch and the second switch are integrally formed so as to be turned on and off simultaneously. (Figure 3a), (Figure 3b) or The ear microphone operation switch module for mobile phones, characterized in that being selected from (Fig. 3d).