KR20020078062A - Portable phone with FM audio output transmitter - Google Patents

Abstract

PURPOSE: A cellular phone in which an FM(Frequency Modulation) sound output transmitter is embedded is provided to embed a handsfree function and easily transmit information outputted through the cellular phone and transmitting information to an other person through an FM frequency. CONSTITUTION: A speaker(600) outputs first information corresponding to the first sound signal transmitted from the outside through an antenna(100). A microphone(700) inputs second information so that the second sound signal corresponding to second information is transmitted to the outside through the antenna(100). An FM sound output transmitter(800) connects to the speaker(600) and the microphone(700) for receiving the first and second sound signals, performing the FM of the received first and second sound signals, amplifies the modulated FM signal, outputting first information, and transmitting second information to the outside. A body(900) embeds the speaker(600), the microphone(700), the FM sound output transmitter(800), and the antenna(100).

Description

Mobile phone with FM audio output transmitter

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile phone having a built-in FM sound output transmitter, and more particularly, to a mobile phone having an FM sound output transmitter having a hands-free function and capable of efficiently using the mobile Internet.

The function of the mobile phone is improving day by day, and recently, a mobile internet function for listening to music through the internet has been added. However, due to regulations on the use of mobile phones and accidents due to the use of mobile phones, the awareness of the use of mobile phones while driving a vehicle is changing. Therefore, in order to fully utilize the functions of a mobile phone as well as a simple call while driving a vehicle, a separate hands-free device must be purchased. By the way, the conventional hands-free is an external type that is sometimes hindered when driving the vehicle by the connection line connected to the mobile phone.

On the other hand, when the mobile Internet using a conventional mobile phone is weak output through the mobile phone or hands-free, it is only a simple acquisition of the information to be output, there is a limit to pass the information as it is or processed to other people.

Therefore, the present invention has been made in view of the above-described problems of the prior art, the technical problem of the present invention can be incorporated into the mobile phone hands-free function, the information output through the mobile phone and the information to be transmitted through the FM frequency It is to provide a mobile phone with a built-in FM sound output transmitter with a hands-free function and an FM transmission function so that it can be easily delivered to others.

Figure 1a is a schematic diagram for explaining a mobile phone with a built-in FM sound output transmitter according to the present invention;

FIG. 1B is a block diagram illustrating the FM sound output transmitter in the cellular phone in which the FM sound output transmitter according to FIG. 1A is incorporated.

Explanation of symbols on the main parts of the drawings

100: antenna 200: duplex 300: LNA

400: PAM 500: BBA 600: Speaker

700: microphone 800: FM sound output transmitter 900: body

810: input signal processor 820: stereo modulator 830: transmitter

In order to solve the above technical problem, a mobile phone incorporating the FM sound output transmitter of the present invention includes an antenna; A speaker for outputting first information corresponding to a first sound signal transmitted from the outside through the antenna; A microphone to which the second information is input such that a second sound signal corresponding to second information is transmitted to the outside through the antenna; It is connected to the speaker and the microphone receives the first and the second sound signal and FM modulation, amplify the modulated FM signal, outputs the first information through the antenna and transmits the second information to the outside An FM sound output transmitter; The speaker, microphone, FM sound output transmitter, and the antenna is characterized in that it has a body that is built in its interior.

In this case, the FM sound output transmitter is connected to an input unit of the speaker and an output unit of the microphone, respectively, to receive and amplify the first sound signal, the second sound signal, or the first and second sound signals. An input signal processor for outputting; A stereo modulator for modulating the first sound signal or the second sound signal input through the input signal processor into a stereo signal, respectively; The transmitter may be configured to FM modulate the stereo modulated signal, amplify the modulated FM signal, output the first information through the antenna, and transmit the second information to the outside.

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

Figure 1a is a schematic diagram for explaining a mobile phone with a built-in FM sound output transmitter according to the present invention, Figure 1b is a block diagram for explaining the FM sound output transmitter in a mobile phone with a built-in FM sound output transmitter according to Figure 1a.

Referring to Figure 1a is a mobile phone with a built-in FM sound output transmitter according to the present invention, the antenna 100, duplexer 200, LNA (LOW NOISE AMPLIFIER) 300, PAM (POWER AMP MODULE) 400, BBA (BASE BAND ANALOG) 500, a speaker 600, a microphone 700 and the FM sound output transmitter 800 and the body 900 that they are all installed therein. At this time, the antenna 100, duplexer 200, LNA (300), PAM (400), BBA (500), speaker 600, microphone 700, body 900 is an example of a typical mobile phone component to be.

The duplexer 200 is a device that receives only a reception frequency band when receiving a signal from the antenna 100 and transmits only a transmission frequency band when transmitting a signal using the antenna 100. Match the input terminal of the () and the output terminal of the PAM 400 and the antenna 100.

The LNA 300 amplifies the weak signal coming from the aerial (base station) in an optimal form and then changes it down to an intermediate frequency through a down converter. The PAM 400 is an amplifying apparatus that amplifies a transmission signal in order to transmit a sufficient signal from a terminal to a base station.

The BBA 500 is a device for down-converting an intermediate frequency signal to a baseband and converting an analog baseband to a digital form for a receiver, converting a digital signal to an analog baseband for a transmitter, and converting a baseband to an intermediate frequency. .

The speaker 600 receives a signal converted into a digital form from the BBA 500, amplifies and outputs information by sound, and the microphone 700 outputs a user's voice or other sound, that is, information to be transmitted as an electric signal. The conversion is output to the BBA 500.

The FM sound output transmitter 800 performs FM modulation so that information transmitted from the outside may be heard through the radio, or FM modulation information to be transmitted to others and transmits the information through the antenna 100. At this time, the FM sound output transmitter 800, the input terminal is connected between the speaker 600 and the BBA 500 and the microphone 700 and the BBA 500 of the mobile phone described above, respectively, FM sound output transmitter ( The output terminal of 800 is installed to be connected to the duplex 200.

The configuration of the FM sound output transmitter 800 will be described with reference to FIGS. 1A and 1B.

1A and 1B, the FM sound output transmitter 800 includes an input signal processor 810, a stereo modulator 820, and a transmitter 830.

The input signal processor 810 is installed such that an input terminal is connected between the speaker 600 and the BBA 500 of the cellular phone and the microphone 700 and the BBA 500, respectively, and is output through the speaker 600 of the cellular phone. It receives and outputs a signal of information to be transmitted (hereinafter, a reception signal) and a signal of information to be transmitted (hereinafter, a transmission signal) through the microphone 700 of the mobile phone, and includes an input conversion switch, an input amplifier, and an input filter. By switching the input changeover switch, only one selected from the received signal or the transmitted signal may be input or the received signal and the transmitted signal may be selected simultaneously. Therefore, only the signal (received signal, transmitted signal, or received signal and transmitted signal) selected by the input changeover switch is input to the input amplifier and amplified, and the signal amplified by the input amplifier is filtered by the input filter.

The amplified and filtered input signal is modulated into a stereo signal by the stereo modulator 820 using the frequency generator. At this time, the received signal and the transmitted signal are modulated at different frequencies.

The transmitter 830 transmits the FM modulated signal to the duplex 200 of the cellular phone by using an FM modulator and a high frequency amplification transmitter. Accordingly, the signals modulated in stereo are modulated into FM signals by the FM modulator, and are converted into frequency signals in the FM band having an appropriate level of output strength by the high frequency amplification transmitter and output toward the duplex 200.

On the other hand, in describing the mobile phone with built-in FM sound output transmitter according to the present invention has been described taking a mobile phone with a duplex 200 as an example, but is not necessarily limited thereto. For example, in the case of a mobile phone provided with a transmitting antenna and a receiving antenna separately, the output terminal of the FM sound output transmitter may be connected to the transmitting antenna.

Next, information transmission and reception using a mobile phone incorporating an FM sound output transmitter according to the present invention will be described. In this case, the reception signal is a music that can be listened to by using the voice of another person or the mobile Internet, and the transmission signal is described using the voice of a mobile phone user as an example.

First, when the input signal processing unit is set so that only the transmission signal is input, the input signal processor has a hands-free function, so that the user's voice is transmitted through the FM sound output transmitter which is a component of the present invention.

Second, when the input signal processing unit is set so that only the reception signal is input and is converted into a frequency signal of an FM band having an output level of an appropriate level for reception by the FM radio from the transmitter, music that can be listened using the mobile Internet. Or listen to other people's voice over the radio. Therefore, in this case, not only does it have a hands-free function, but also it can receive high-quality information.

Third, when the input signal processing unit is set to receive the reception signal and the transmission signal, and is converted into a frequency signal of the FM band having an output strength of a level suitable for reception by the transmitter on the FM radio, it is possible to listen using the mobile Internet. In addition to listening to music or other people's voice over the radio, the user's voice may be transmitted through the FM sound output transmitter according to the present invention. At this time, when the mobile phone user sings to the music transmitted to the mobile Internet, it can be used as a mobile karaoke.

According to the mobile phone with the built-in FM sound output transmitter of the present invention, since the information is transmitted and received using the FM frequency, there is no need for a separate hands free.

Furthermore, in case of using the mobile Internet, voice and music information is received through the radio, so that not only high quality information can be provided, but also the received information can be processed as it is or processed using the mobile internet. Can be satisfied.

The present invention is not limited to the above embodiments, and it is apparent that many modifications are possible by those skilled in the art within the technical spirit of the present invention.

Claims (2)

An antenna; A speaker for outputting first information corresponding to a first sound signal transmitted from the outside through the antenna; A microphone to which the second information is input such that a second sound signal corresponding to second information is transmitted to the outside through the antenna; It is connected to the speaker and the microphone receives the first and the second sound signal and FM modulation, amplify the modulated FM signal, outputs the first information through the antenna and transmits the second information to the outside An FM sound output transmitter; Cell phone with a built-in FM sound output transmitter having a speaker, a microphone, an FM sound output transmitter, and a body in which the antenna is built in its interior. According to claim 1, wherein the FM sound output transmitter, An input signal processing unit connected to an input unit of the speaker and an output unit of the microphone, respectively, for receiving and amplifying the first sound signal, the second sound signal, or the first and second sound signals; A stereo modulator for modulating the first sound signal or the second sound signal input through the input signal processor into a stereo signal, respectively; And a transmitter configured to FM modulate the stereo modulated signal, amplify the modulated FM signal, and output the first information through the antenna and transmit the second information to the outside. Phones.