KR100367283B1 - Telephone that is dialed with electronic dialing tone-sound of a cellular phone - Google Patents

Abstract

The present invention relates to a telephone which is connected with an electronic dial tone sound of a cellular phone, and has a high sensitivity external microphone 1 for receiving an electronic dial tone sound generated by the cellular phone 12, and a phone plug for connecting an earphone. ), An extension cable (3) connected to the earphone jack hole of the cellular phone, an earphone (4) connected to the phone plug, a transmission / reception amplifier circuit (5) for amplifying the received signal, and a telephone network can be manually and automatically connected. The ring oscillation unit 9 which vibrates by connecting the piezoelectric buzzer 8 by detecting a ring signal flowing into the wired telephone network 13 and the rectifier 7 using the hook switch 6 and the wired telephone network 13. It can be connected to wired telephone network by dial tone sound of mobile phone, and it is possible to simultaneously talk between wired and wireless by wireless connection through base station under wired network connection. Hands-free is available, and can be used just like a regular landline phone to a cell phone so you can use it more useful to combine the convenience of utility and telephone of the mobile phone.

Description

Telephone which is connected by electronic dial tone sound of cell-phone {TELEPHONE THAT IS DIALED WITH ELECTRONIC DIALING TONE-SOUND OF A CELLULAR PHONE}

The present invention relates to a telephone which is connected by an electronic tone tone of a mobile telephone.

More specifically, it is a kind of cellular phone that transmits an electronic dial tone sound signal generated by a cellular phone to a wired telephone network so that a telephone line can be connected to serve as a unique wireless telephone function of a cellular phone and a general wired telephone function. A secondary telephone of a telephone.

The conventional mobile phone is composed of a system for making a wireless call through a wireless base station or using a control signal at a long distance through the base station by an electronic dial tone tone.

Therefore, the mobile phone cannot be connected to the wired telephone network, and only the wireless communication through the base station is possible, so the utility of the mobile phone was not so high.

On the other hand, general telephones are wired, but there is no system that can be used in connection with a mobile phone.

In addition, there are economical restrictions on the use of mobile phones, which have relatively low telephone toll rates and relatively expensive mobile phones.

SUMMARY OF THE INVENTION An object of the present invention is to provide a new auxiliary telephone of a mobile telephone which can be used as a wireless telephone through a base station and a landline telephone through a wired telephone network by combining a portable telephone with an auxiliary telephone capable of a landline telephone.

Another object of the present invention is a dial tone sound generated from a mobile phone, which allows dialing connection to a wired telephone network through an auxiliary phone, and the auxiliary phone adopts a micro component, so that the body becomes extremely small and light, and is easy to handle. Hand free is possible, and it is combined with a mobile phone to expand the utility of the mobile phone and to enhance the convenience of the phone.

Still another object of the present invention is to enable a conventional mobile phone to be used both wirelessly and wirelessly by a wireless telephone function between base stations having a unique function and a wired telephone function of an auxiliary telephone of the present invention.

The present invention connects the extension cable of the auxiliary telephone to the earphone jack hole of the mobile telephone, and is connected to the wired telephone network by the function of the auxiliary telephone by the electronic dial tone sound generated from the cellular telephone. A new auxiliary telephone that can be used in various ways, such as a telephone call by a connected Leviser and an external microphone, whereby the cellular phone can be disconnected from the wired telephone network by pressing the send button and simultaneously making a three-way call through a wireless telephone connection through the base station. Of course, this secondary phone does not have a dial system as a combination of a mobile phone and is used as a hand-free through the earphone and microphone connected to the phone plug of the secondary phone.

The secondary telephone of the mobile phone according to the present invention includes a high-sensitivity external microphone for receiving an electronic tone signal generated by the mobile phone, a phone plug for connecting earphones, an input / output extension cable for connecting the earphone jack hole of the mobile phone, and an earphone. It consists of a transmission and reception amplification circuit for amplifying the received signal, a hook switch capable of manually and automatically connecting the telephone network, a rectifier and a ring oscillator using the power of the wired telephone network. Is not different from the known telephone apparatuses, but there is no dialing mechanism. Instead, a highly sensitive microphone is formed to receive the dial tone sound of the cellular phone. It is characterized in that the connection mechanism is provided to be used in combination with a mobile phone.

When the auxiliary telephone is connected to the earphone jack hole of the cellular phone with an extension cable and dialed with the cellular phone in the off-hook state, the dial tone sound signal generated by the cellular phone is received by the extension cable or a high-sensitivity external microphone and the frequency is 600. The filtered and filtered frequency is filtered by a filter band passing only ~ 1400 kHz, controlled by an automatic gain control circuit that adjusts to an appropriate level on the wireline, and then amplified into a signal of an appropriate level by a transmitting and receiving signal amplifier. It is sent over the line and connected to the caller's telephone. At this time, there is no wireless connection through the base station because the send button of the mobile phone is not pressed.

The hookswitch is implemented manually and by selecting it to automatically turn on and off when a specific dial key is pressed. During a call, the busy signal is displayed by the light emitting diode. The earphone jack is connected to the phone plug, and the call received by the mobile phone is communicated through the external microphone with the earphone. The call received by the wired telephone network is switched off by pressing the hook switch to make the call through the earphone and the external microphone. With the wired network connected, you can dial the mobile phone and press the send button to make simultaneous calls between the three wires and wirelessly.

The auxiliary telephone of the present invention has the advantage of being able to make a call at a lower cost because it can be connected to a mobile phone by using a digital dial tone sound signal of the mobile phone so that a landline can be connected to a landline network without passing through a base station. .

In addition, it is convenient to make wireless calls through a telephone connection through a base station, which is a unique feature of a mobile phone. By the combination of the wired call function and the wireless call function, the utility of the mobile phone is increased by that much and the convenience of the phone is further increased, thereby making it possible to use the conventional mobile phone more conveniently.

1 is a block diagram showing the configuration of the present invention

Figure 2 is an embodiment of the present invention

[Description of Signs of Important Parts of Drawing]

1: external microphone, 2: phone plug, 3: extension cable,

4: earphone, 5: transmitting and receiving signal amplifier, 6: hook switch,

7: bridge rectifier, 8: buzzer, 9: ring oscillator,

10: frequency band filter, 11: automatic gain control circuit, 12: mobile phone,

13: wired telephone network, 14: trunk line connection cord, 15: auxiliary telephone,

16 extension cable

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the configuration of an auxiliary telephone of a cellular phone of the present invention.

The auxiliary telephone 15 is connected to the earphone jack hole of the mobile telephone 12, and an input / output extension cable 3 for receiving an electronic dial tone sound and a phone plug 2 for plugging in a jack of the earphone 4 and a call and A high sensitivity microphone 1 for detecting dial tone sounds is provided. A filter 10 for filtering the reception signal of the microphone 1, an automatic gain control circuit 11 for controlling the reception frequency to an appropriate level, and a transmission / reception signal amplifier 5 are connected. The hook switch 6 is selected so as to be off-hook automatically when the manual and specific dial keys are pressed to realize the function. The ring oscillator 9 has a capacitor and a resistor connected in series and a light emitting diode connected in series so as to rectify the intermittent beeping sound of 20 to 60 kHz flowing through the wired telephone network 13 so that the lamp flashes when the ring signal is input. It is. An integrated circuit comprising a rectifying circuit portion and an oscillating circuit portion is configured such that two interrupted oscillation frequencies ring with the buzzer 8. Reference numeral 14 is a connection jack for connecting to a trunk line, which is a wired telephone network.

The operation of the present invention configured as described above is as follows. That is, it is possible to make a telephone call through the base station by dialing the cellular phone 12 and pressing the send button.

Also, as shown in FIG. 2, when the extension cable 3 of the auxiliary telephone 15 is connected to the earphone jack of the cellular phone 12, and the cellular phone 12 is dialed, a dial tone sound signal causes the extension cable 3 to be connected. When the dial tone sound signal is input to the circuit of the auxiliary telephone 12 and dialed close to the external microphone 1 with the extension cable 3 separated from the mobile telephone 12, the dial tone tone signal of the auxiliary telephone 15 It is received by the external microphone 1 and this received frequency is filtered through a frequency band filter 10 passing only a frequency of 600-1400 kHz. Therefore, external noises, etc. do not affect this signal transmission. The filtered frequency signal is controlled by the automatic gain control circuit unit 11 at an appropriate level on the wired telephone network line, amplified by the transmit / receive signal amplifier 5, and then sent on the wired telephone network line and connected to the telephone number. When a telephone line is connected through an extension cable or an external microphone, the same function as a normal telephone is as a landline call. That is, when the earphone 4 is plugged into the ear and the telephone is communicated through the external microphone 1, the voice current is transmitted to the counterpart telephone through the wired telephone network 13 through the telephone circuit of the auxiliary telephone 15. There is no dial-up through the wireless base station because you do not press the send button even if you dial with a cell phone.

In the wired call state, the extension cable is disconnected from the mobile phone 12, the mobile phone 12 is dialed, and the send button is pressed through the base station to make simultaneous calls between the three parties.

Wired telephone network Auxiliary phone is connected to the mobile phone, so that the wired network can be connected by the dial tone sound of the mobile phone. Therefore, the function of the mobile phone is expanded by two functions such as wireless call and wired call. .

In addition, even when the battery of the mobile phone is discharged, there is an advantage that you can talk using the power of the wired telephone network.

The auxiliary telephone does not have a dial system mechanism, but it can be used as a regular telephone by combining a mobile phone, and hands-free function can be realized by using an earphone.

The components of the auxiliary telephone are extremely small and lightweight, so they are extremely small compared to the general telephones with dial mechanisms, and are easy to handle and convenient to use. There are many effects such as being available.

Claims (1)

The auxiliary telephone 15, which connects and uses the cellular phone 12, includes an input / output extension cable 3 for receiving an electronic dial tone sound, a phone plug 2 for plugging in a jack of the earphone 4, and a high sensitivity microcomputer. The phone 1, the filter 10 in the 600 kHz to 1400 kHz frequency band for filtering the received signal of the microphone 1, the automatic gain control circuit 11 for controlling the reception frequency to an appropriate level, and the transmission and reception signal. It consists of an amplifier 5, a hook switch 6 which automatically selects off-hook when a manual and specific dial key is pressed, a rectifier circuit 7, a buzzer 8 and a ring oscillator 9, The auxiliary telephone 15 is connected to the earphone jack hole of the cellular phone 12 through the extension cable 3, and the telephone is connected to the wired telephone network by a dial tone sound of the cellular phone. Telephone connected by dial tone.