KR20010008167A - Portable Device Having the Functions of Storing and Receiving Coded Data - Google Patents

Abstract

PURPOSE: A walkie-talkie capable of storing and reproducing data is provided to store and reproduce audio file in the walkie-talkie without an audio reproducer. CONSTITUTION: A signal receiving part(30) receives a high frequency signal and extracts effective voice data from the signal for transmitting to a user. A signal transmitting part(31) converts the voice data of the user into a high frequency signal and transmits the high frequency signal to the outside. An effective signal detecting part(36) detects whether the effective data are being received from the signal receiving part(30) presently. A data storing part(39) stores predetermined multimedia data. A data outputting part(32) converts the multimedia data into the shape recognizable by the user and transmits the converted multimedia data to the user. A system control part(40) receives the detected result from the effective signal detecting part(36) and controls the data outputting part(32).

Description

Portable Device Having the Functions of Storing and Receiving Coded Data

The present invention relates to a portable radio capable of storing and reproducing code data, and more particularly, to a portable radio capable of storing and reproducing a compressed file of audio data.

Currently, there are many cases in the world where a portable radio, commonly referred to as a living radio or a FRS, is used for leisure or work purposes. For example, recreational roads are where several people go hiking together, play post games, etc., and for business purposes, communicate with a delivery person at a restaurant that contacts workers at construction sites or provides delivery services. Use these handheld radios, for example. In addition to these uses, it is expected that the area will be expanded to confirm the location of each other when moving to home or to check the location of children. In the case of such a portable radio, there is an advantage of providing mutual communication services, but it is necessary to provide additional services in order to cause a stronger purchase desire for users because the functions are rather simple.

On the other hand, a device having a function of storing / playing an audio file, such as an MP3 player, which is currently used, is sold at a high price point despite its simple function, and is generally configured as a separate device to listen to music. In order to carry a separate device for the inconvenience, there is not much response.

It is an object of the present invention to provide a portable radio capable of storing and reproducing data.

1 is a diagram showing the configuration of a portable radio of the prior art.

2 is a diagram showing the configuration of a conventional MP3 player.

3 is a diagram showing the configuration of a portable radio according to the present invention;

<Explanation of symbols for main parts of drawing>

30: RF / IF

31: signal conversion unit

32: voice signal recovery unit

33: RF generator

34: modulator

36: effective signal control detector

39: storage device

40: controller

41: audio decoder

42: codec

44: key input

Hereinafter, with reference to the accompanying drawings will be described in detail.

1 is a view showing the configuration of a portable radio of the prior art. The operation of the portable radio of the prior art will be briefly described with reference to FIG.

In the case of reception, the signal received through the antenna is detected by a signal having a predetermined frequency band through a radio frequency interface (RF / IF) 11, the detected signal is a radio of the present invention by the signal converter 12 Is converted into a predetermined signal to be dealt with. Typically, the signal converter 12 is composed of a band-pass filter, a mixing circuit, an amplifier circuit, and an amplitude limiting circuit. The signal converter 12 includes a desired frequency. And a signal having an amplitude characteristic. The voice signal recovery unit 13 restores the audio signal from the signal generated by the previous signal conversion unit 12 and amplifies it so as to generate a valid sound from the speaker 14 of the next stage. In addition, in the radio, voice is output through the speaker only when the other party transmits a valid signal, and sound is not output while the radio is not available. There is. The valid signal controller 15 of the drawing obtains appropriate information from the signal converter 12 to determine whether a valid signal is currently coming in, and based on the result, the circuit used in the signal converter 12 (eg, Amplification circuit and amplitude limiting circuit). For this purpose, a special circuit called a squelch detector is usually used. The squelch detector rectifies an audio noise signal among the signals handled by the signal converter 12 and corresponds to the magnitude of the signal converter. Adjust the amplifying gain (amplifying gain) of the amplifying circuit constituting (12) or the threshold voltage level of the amplitude limiting circuit. In the case of transmission, the user's voice is input through the microphone 17 and is modulated at a normal frequency in the modulator 18, and the modulated signal is composed of a radio frequency (RF) signal of a predetermined frequency in the RF generator 19. And is sent out via the RF / IF 11 and the antenna. In addition, since the radio is generally portable, power is supplied through the battery 10.

Although not shown, the radio of the present invention typically displays information necessary for the user and receives commands from the user through an LCD display and a key input. In addition, although not shown, the radio of the present invention uses a phase locked loop (PLL) circuit, a voltage controlled oscillator (VCO), or the like to properly connect the aforementioned reception path and transmission path.

2 is a view showing the configuration of a conventional MP3 player. The operation of the MP3 player of the prior art will be briefly described with reference to FIG.

The controller 23 of the MP3 player downloads the MP3 audio file or other data from the external device such as a computer through the host interface 21 and stores the MP3 audio file or other data in the storage device 22, and during playback, the audio file is stored from the storage device 22. It is loaded and sent to the audio decoder 24 for proper decoding, and the decoded contents are output through the codec 25 to an appropriate output device 28 such as a speaker or earphone. In addition, the MP3 player receives power from the battery 29 to maintain the operating state, receives the user's command through the key input terminal 26, and displays the current state to the user through the LCD display 27.

3 is a view showing the configuration of a portable radio according to the present invention. The configuration of the portable radio according to the present invention will be described with reference to FIG. 3 as follows.

First, the radio of the present invention has the function of a conventional radio as described above with reference to FIG. That is, it has a reception path composed of an antenna, an RF / IF 30, a signal converter 31, an audio signal restorer 32, an output 43, and an effective signal adjuster (detection) 36. It also has a transmission path composed of an input unit 35, a modulator 34, an RF generator 33, an RF / IF 30, and an antenna. The description of each part is similar to that described above with reference to FIG. However, the effective signal adjustment detector 36 detects whether a valid signal is input through the current reception path in addition to the above-described adjustment function performed by the valid signal controller 15 in the reception path, and controls the result of the controller ( 40) may further have a function of notifying, and optionally may further have a function of detecting when the user inputs a voice through the input unit 35 to inform the controller 40. However, the information that the user inputs the voice through the input unit 35 may be obtained through the key input 26 according to the operation scenario of the radio and may not be necessary depending on the design. Detects a user's voice input and informs the controller 40 is optional as described above.

The radio of the present invention also has the function of an MP3 player as described above with reference to FIG. That is, a function of obtaining the audio file from the host interface 38 and storing it in the storage device 39, loading the file, and reproducing and listening through the audio decoder 41, the codec 42, and the output unit 43. Has In addition, if the controller 40 is known to have a valid signal in the radio reception path from the above-described effective signal control detector 36 while playing the audio file, the controller 40 stops playback so that the audio output does not come out of the output unit 43. Instead, the voice received from the radio receiver path is output. Optionally, the audio output sound can be output very small, and the voice received from the radio receiver path can be output relatively loud by greatly reducing the size of the audio output. When the user attempts to input a voice through the input unit 35 while playing the audio file, the audio reproduction sound may not be output as described above, or the sound may be greatly reduced. As described above, the information that the user wants to input the voice may be transmitted from the RF generator 33 to the controller 40 via the effective signal control detection unit 36, or the key input 44 according to the operation scenario of the radio. May be transferred directly to the controller 40.

In terms of operation, the portable radio according to the present invention is different from the portable radio of the prior art as follows.

The portable radio of the present invention has a music mode in addition to the normal reception standby mode and the call mode, and when the user selects the music mode while the radio is in the reception standby mode, the portable radio plays a stored audio file and the user plays through the speaker or earphone Output to. When a call request is received during the music mode, the controller 40 disables the current music mode and instead enables the call mode to enable the call. When the call ends, the portable radio of the present invention disables the call mode and then automatically activates the music mode by user's keystrokes or automatically resumes playback of the audio file, preferably from a previously interrupted point. do.

When the receiver is in the standby mode, the portable radio of the present invention operates similarly to the radio of the prior art, but preferably the audio decoder 41, the codec 42, and the storage device to prevent power waste and noise ingress. 39) and host interface 38 and the like.

In addition, when the user does not want to talk in the music mode, the call mode is disabled through key input, and in this case, even when a call request is received during the music mode, the transition to the call mode may not occur.

After that, when the user is willing to make a call, the call mode can be enabled by key input so that the call can be made. Also, when the user disables the music mode, the call can be implemented.

According to the portable radio of the present invention, the storage / playback function of the audio file is added to the portable radio, thereby making it easier to carry than to carry the portable radio and the audio player separately.

According to the portable radio of the present invention, by adding an audio file storage / playback function to the portable radio, it is possible to enhance the competitiveness in the market by additionally providing an entertainment function in the use of the portable radio for leisure, sports, and business purposes. It is effective.

In the above description, the case where the audio file is stored and reproduced has been described, but the present invention can be applied in the same way even when the type of data used is not audio data, for example, image data or general data file. It can be easily thought out from the foregoing description.

Claims (3)

A signal receiver for receiving a high frequency signal and extracting valid voice data from the high frequency signal; And a signal transmitter for converting voice data of a user into a high frequency signal and transmitting the high frequency signal to the outside, wherein the portable radio includes a valid signal detector for detecting whether valid data is currently received from the signal receiver; A data storage unit capable of storing predetermined multimedia data; A data output unit converting the multimedia data into a form that can be recognized by the user and transferring the multimedia data to the user; And a system controller configured to receive a detection result from the valid signal detector and to control the data output unit, wherein the system controller is predetermined from the data output unit when a detection result of the valid signal detector is currently valid data is being received. If the output of the portable radio, characterized in that by controlling the data output unit so that the output is stopped. The portable radio of claim 1, wherein the valid signal detector further detects whether valid data is currently being transmitted from the signal transmitter. A signal receiver for receiving a high frequency signal and extracting valid voice data from the high frequency signal; And a signal transmitter for converting voice data of a user into a high frequency signal and transmitting the high frequency signal to the outside, wherein the portable radio includes a valid signal detector for detecting whether valid data is currently received from the signal receiver; A data storage unit capable of storing predetermined multimedia data; A data output unit converting the multimedia data into a form that can be recognized by the user and transferring the multimedia data to the user; And a system controller configured to receive a detection result from the valid signal detector and to control the data output unit, wherein the system controller is predetermined from the data output unit when a detection result of the valid signal detector is currently valid data is being received. And if there is an output of the portable radio, characterized in that by controlling the data output unit to reduce the output.