KR20000049348A - The family radio service having the function of playing the mp3 file - Google Patents

Abstract

PURPOSE: A family radio service(FRS) having an MP3 play function, is provided to listen to music by playing an MP3 file in not communicating in wireless. CONSTITUTION: A family radio service(FRS) having an MP3 play function, comprises a key controller(206), a controller(206), a display(232), an interface device(234), a storage(230), a signal converting device(212) and a voice output device(116). The key controller(206) receives an input of a user. The controller(206) detects a received user input from the key controller, and generates a control signal according to pre-stored program. The display(232) displays an operation state of an equipment and a guide according to a control signal of the controller. The interface device(234) transceives data from an output port of a computer. The storage(230) stored data inputted from the interface device. The signal converting device(212) outputs by amplifying and filtering voice data of the storage and voice data transmitted from a data transceiving device, according to a control signal of the controller. And the voice output device(116) outputs voice data received from the signal converting device.

Description

FM RADIO SERVICE HAVING THE FUNCTION OF PLAYING THE MP3 FILE}

The present invention relates to an FRS, and more particularly to an FRS having an MP3 playback function.

In general, the Family Radio Service (hereinafter referred to as FRS) is a radio that can be used freely without paying radio bills, although it does not require permission or notification even though it varies from country to country. The frequency of the FRS is 27 MHz short-wave frequency (HF) is used, recently, 448 MHz ultra-high frequency (UHF) is mainly used.

The FRS using the ultra high frequency (UHF) of 448MHz uses FM modulation method, 0.5W maximum allowable output, 15 channels, and the communication distance based on the plain without obstacle is 3km maximum.

If you frequently communicate wirelessly to friends and colleagues in the outdoors or nearby areas, such as university campuses, you do not have to pay a separate communication fee.

Hereinafter, the configuration of the conventional FRS will be described in more detail.

1 is a block diagram showing the structure of a conventional FRS, in which the FRS 100 includes an antenna 102 serving as a medium for transmitting and receiving a voice signal, a data transmitting and receiving unit 104 for modulating and demodulating the voice signal, and a prestored program. Control unit 106 for generating a control command, a key input unit 108 for transmitting a user input to the control unit 106, a status display unit 110 for displaying a function and an operation state of the device to a user, and receiving A signal converter 112 for amplifying / filtering one data or sampling data to be transmitted, an internal speaker 114, a voice output unit 116 such as an external speaker or earphone, separately provided, and a counterpart such as a microphone It is configured to include a voice input unit 118 that can speak to.

The method of using the FRS having such a configuration is to talk to the other party while pressing a call button, like a general radio, and when the call button is released, the state of the other party can be heard.

Additional functions of FRS include transmit / receive sensitivity, wireless channel designation, battery level display, voice activated transmission (VOX), button lock, channel display, and reception melody function.

The transmission / reception sensitivity of the FRS is displayed on the LCD of the status display unit 110 in the same manner as a bar graph, and when there is a lot of noise in the current channel, another channel can be designated by pressing the corresponding button of the key input unit 108.

In addition, by detecting the power of the power supply unit 120 to display the remaining battery, VOX function to detect the human voice and transmit to another FRS, button lock function to prevent other people from using, and the currently used channel and It also additionally supports a channel display function to display available channels and a number of melody functions to set desired music.

However, the conventional FRS described above is not only a baggage when not making a wireless call, but also an inconvenience to carry a portable device when carrying other portable devices that can listen to music.

Therefore, it is necessary to increase the functionality of the FRS by adding a function to play MP3 files even when wireless communication is not used.

Disclosure of Invention The present invention has been made to solve the above-mentioned problems and to meet the above-mentioned needs, and an object thereof is to provide an FRS having an MP3 function.

1 is a block diagram showing the configuration of a general FRS.

Figure 2 is a block diagram showing the configuration of the FRS having a MP3 playback function according to an embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

206: control unit 212: signal conversion unit

230: storage unit 232: status display unit

234: interface unit 300: computer

The present invention for achieving the above object is a key control unit for receiving a user input; A control unit for detecting a user input received from the key control unit and generating a control signal according to a pre-stored program; A status display unit for displaying an operation state and a guide text of the device according to a control signal of the controller; An interface unit for transmitting and receiving data from an output port of the computer; A storage unit for storing data input through the interface unit; A signal converter for amplifying, filtering, and outputting voice data transmitted from the storage unit and the voice data transmitted from the data transmitter / receiver according to a control signal of the controller; And a voice output unit for outputting voice data received from the signal converter.

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

2 is related to an FRS having an MP3 playback function according to an embodiment of the present invention. The FRS 200 includes an antenna 102 serving as a medium for wireless communication and a signal transmitted / received through the antenna 102. A data transmission / reception unit 104 for converting / demodulating, a control unit 206 for generating a control command according to a program stored in an internal memory, a key control unit 208 for receiving a user input, and the control unit 206 In accordance with the transmitted control signal is provided with a status display unit 232 for displaying the status and function of the device.

In addition, the interface unit 234 for receiving the MP3 file transmitted from the output port of the computer 300, the signal conversion unit 212 for amplifying or filtering the signal transmitted from the data transmission and reception unit 104, An internal speaker 114 for outputting an audio signal output from the signal converter 212 is provided.

The output terminal of the signal converter 212 is provided with two input / output terminals, the voice output unit 116 for outputting the voice signal transmitted such as earphones or speakers, and the like for inputting a voice signal such as a microphone The voice input unit 118 is connected to each other. The voltage level of the power supply unit 220 may vary depending on the manufacturer's design rule, but it is common to use a DC voltage having a specific level among 5V to 24V.

The detailed function and operation of the FRS having the MP3 playback function will be described. However, it is assumed that a user receives a wireless signal from a friend while listening to the MP3 file.

The user selects a desired song from among songs stored in the computer 300 by pressing a corresponding button of the key control unit 208, and the control unit 206 that recognizes a user's command transmitted from the key control unit 208 is a status display unit. (232) displays the current work. In this case, the status display unit 232 is configured to include a liquid crystal display and a LED display having a plurality of colors.

In addition, the control unit 206 stores the MP3 data input through the interface unit 234 connected to the output port of the computer 300 in the storage unit 230 and records the location thereof. In this case, the storage unit 230 may use a nonvolatile memory such as a flash memory, and its capacity can be increased later as an option.

To listen to the MP3 file pre-stored in the storage unit 230, the user selects a desired song by pressing a selection button of the key control unit 208, and when the play button is pressed, the controller 206 selects the MP3 file selected by the user. The file is output to the internal speaker 114 or the audio output unit 116 for listening.

While the user listens to the MP3 file with an earphone or an external speaker, a wireless signal for a call from a friend having another FRS is captured by the antenna 102 and transmitted to the data transmission / reception unit 104. 206 immediately stops the MP3 playback operation.

At the same time, the voice signal demodulated by the data transmission / reception unit 104 is amplified and filtered through the signal conversion unit 212 and output to the internal speaker 114 or the voice output unit 116, thereby allowing the user to use another FRS. You will be able to hear your friend's voice and will be in a call.

On the other hand, a radio reception function may be added to the above-described configuration so that radio listening, MP3 playback, and wireless communication functions can be selected, and a general radio receiver may be used.

Embodiments disclosed as described above are intended to illustrate the central idea of the present invention by way of example, and of course, modifications may be made depending on the manufacturer's design in a range not departing from the central idea.

According to a preferred embodiment of the embodiment according to the present invention described above has the following advantages.

First, in case of no wireless communication, it is possible to listen to music by playing MP3 file, thereby increasing user convenience.

Second, because it has a built-in MP3 player, not only can you sell it to a lot of young people at low prices, but it also maximizes portability and economy because you do not need to purchase an MP3 player.

Claims (6)

A key control unit for receiving a user input, A control unit for detecting a user input received from the key control unit and generating a control signal according to a pre-stored program; A status display unit for displaying an operation state and a guidance text of the device according to the control signal of the controller; An interface unit for transmitting and receiving data from an output port of a computer, A storage unit for storing data input through the interface unit; A signal converter for amplifying, filtering, and outputting the voice data stored in the storage unit and the voice data transmitted from the data transmitter / receiver according to a control signal of the controller; And a voice output unit for outputting voice data received from the signal converter. The method of claim 1, The voice output unit FRS having an MP3 playback function, characterized in that one of the earphones, speakers. The method of claim 1, And the storage unit is a nonvolatile memory, and the control unit is a programmable microprocessor with firmware. The method of claim 1, The control unit further comprises stopping the playback of the MP3 file, if there is a signal transmitted from the other FRS FRS having an MP3 playback function. The method of claim 1, The data input and output method of the interface unit FRS having an MP3 playback function, characterized in that selected from the group consisting of serial, parallel, USB port and the like. The method of claim 1, And a receiver for an airwave radio broadcast, and having an MP3 playback function, wherein a radio listening, MP3 playback, and wireless communication can be selected according to a user input.