KR200234020Y1 - Voice recorder having wireless reception or transmission function - Google Patents

Abstract

Voice recorder according to the present invention, a central processing unit for executing and controlling various functions, a wireless receiver for receiving a radio signal, an audio amplifier for amplifying a signal input from the radio receiver or the microphone, input from the audio amplifier A selector for selecting whether to digitally or analogize or bypass the signal, a power amplifier for amplifying the digital / analog converted or bypassed analog signal to output the signal to the speaker, and an analog signal input from the selector Is transmitted to the digital signal or the stored digital signal to an analog signal, and the wireless transmission of the signal output from the sub-decoder or the signal bypassing the sub-decoder by the central processing unit Wireless transmitter for transmitting, digital signal output from the decoder / decoder A digital signal processing unit for receiving the data through the central processing unit, compressing or restoring the digital signal, and recording and converting the compressed and compressed data information from the encoding / decoding unit and the digital signal processing unit into digital signals according to the control of the central processing unit. In operation, the memory unit includes a memory unit. The central processing unit receives the data information from the memory unit during wireless transmission, restores the compressed data through the digital signal processing unit, and transmits the stored data information to the encoding / decoding unit. It is characterized by converting into an analog signal suitable for wireless transmission.

Description

VOICE RECORDER HAVING WIRELESS RECEPTION OR TRANSMISSION FUNCTION}

The present invention relates to a voice recorder having a wireless transmission or wireless reception function, and more particularly, by adding a wireless function to reproduce recorded content using a wireless device such as a radio or to output radio signals or radio waves from a wireless microphone. It relates to a voice recorder capable of receiving and recording a wireless signal such as.

The voice recorder, which applied a conventional tape recorder, has been able to store signals using only a simple memory without a tape due to the development of various digital technologies, compression techniques, and memory integration technologies. As a result, it has developed into a digital voice recorder capable of miniaturization, long time recording, easy management of recorded messages, and fast playback.In addition, tape recording and playback technologies have been changed to semiconductor application technologies such as A / D conversion, compression, and storage of signals. It became.

However, while the use of the existing voice recorder has increased in accordance with the demand for small size, light weight, and the use of language courses, there have been many inconveniences in actual use. For example, a voice recorder that can be heard only with earphones or built-in speakers while driving is almost impossible to use for a language study in a vehicle, and has a problem in that a place where a larger output is required is to be inconvenienced.

Therefore, the present invention is to solve the above problems, an object of the present invention is to add a voice transmission and reception function to the voice recorder, a voice recorder capable of receiving or outputting or recording voice signals from a wireless microphone or other wireless transmitters. Is in providing.

An additional object of the present invention is to provide a voice recorder capable of reproducing a recorded voice signal using a wireless device such as a radio by adding a wireless transmission and reception function to the voice recorder.

1 is a block diagram of a voice recorder according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: keypad 20: central processing unit

30: Liquid crystal display part 40: Audio amplification part

50: selection part 60: copying / decoding section

70: power amplifier 80: digital signal processor

90: memory unit 100: wireless transmission unit

110: wireless receiver

As a technical idea for achieving the object of the present invention, the present invention is a central processing unit for executing and controlling various functions;

A wireless receiver for receiving a wireless signal;

An audio amplifier for amplifying a signal input from the wireless receiver or microphone;

A selection unit for selecting whether to digitally or analog convert or bypass the signal input from the audio amplifier;

A power amplifier for amplifying a digital / analog converted or bypassed analog signal to output the signal to a speaker;

A sub / decoder for converting an analog signal input from the selection unit into a digital signal or converting a stored digital signal into an analog signal;

A wireless transmitter for wirelessly transmitting a signal output from the encoder / decoder or a signal bypassing the encoder / decoder under the control of the central processor;

A digital signal processor for processing the digital signal output from the encoder / decoder through the central processor to be compressed or decompressed and output; And

And a memory unit for storing data information, which is converted and compressed into digital signals from the encoder / decoder and the digital signal processor, during the recording operation under the control of the central processor.

The central processing unit converts the stored data information into an analog signal suitable for wireless transmission by recovering the compressed data through the digital signal processing unit after receiving the data information from the memory unit and transmitting the stored data information to the sub / decoding unit. It is characterized by.

Hereinafter, the configuration of the embodiment of the present invention and its configuration will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a voice recorder according to the present invention. Referring to this, each component and its operation will be described below.

Referring to the block diagram of the voice recorder shown in FIG. 1, a keypad 10 having function keys for performing various functions and a signal input through the keypad 10 are sensed to execute various functions. Amplifying the analog signal input through the central processing unit 20 for generating a control signal for controlling, the liquid crystal display 30 for displaying a variety of information required by the user according to the control signal of the central processing unit 20, the microphone The audio amplifier 40 receives the signal from the audio amplifier 40, and whether or not to pass or bypass the signal flow under the control of the central processing unit 20 or passes through the decoder 60. Selector 50 for controlling, the sub-decoder 60 for converting the analog signal input from the selector 50 to a digital signal or a digital signal to an analog signal, the negative / Power amplifier 70 for amplifying the magnitude of the signal to output the analog signal converted from the luxury unit 60, the signal to compress or decompress the digital signal input through the encoder / decoder 60 Of the memory unit 90 and the selection unit 50 for storing data information converted and compressed from the digital signal processor 80, the encoder / decoder 70, and the digital signal processor 80 into digital signals. The wireless transmitter 100 converts a signal through or not through the encoder / decoder 60 into a wireless signal according to the control of the central processor 20, and transmits the signal through an antenna, and the central processor 20. After receiving the wireless signal according to the control signal of the) is configured to a wireless receiver 110 for transmitting the received signal to the audio amplifier 40.

First, a keypad 10 has a function key set for a user to perform various functions. That is, various function keys, such as a recording key, a playback key, a recording mode setting key, and a volume key, are provided.

The central processing unit (CPU) 20 senses a signal input through the keypad 10 and generates a control signal necessary to execute and control various functions.

That is, the user interprets the key input by the user to execute various functions such as recording, playback, setting of various options, and the like, and transmits text or pictures through the liquid crystal display unit 30 to convey various information to the user. Display information.

In addition, peripheral devices such as the encoding / decoding unit 60, the digital signal processing unit 80, the memory unit 90, the wireless transmitter 100, and the wireless receiver 110 are necessary for realizing various functions.

At this time, a control program for executing a function is stored in a ROM embedded in the central processing unit 20 and operated by the stored program.

The LCD 30 displays various information necessary for the user according to the control signal of the central processing unit 20, that is, an operation mode, a remaining memory amount, a remaining battery level, a number of recorded messages, a recordable time, a current time, and wireless reception. Display information.

The audio amplifier 40 may attenuate an analog signal input from the microphone or the wireless receiver 110 according to a user's selection. That is, it receives a signal input from the microphone or the wireless receiver 110, and adjusts the size to remove a noise of a suitable sound quality.

The selector 50 controls the flow of the signal not to input the signal from the audio amplifier 40 to the negative / decoder 60 or pass through the negative / decoder 60 under the control of the central processing unit 20. It plays a role.

The encoder / decoder 60 (Coder / Decorder, CODEC) 60 converts an analog signal input from the selector 50 through an audio amplifier 40 into a digital signal or converts a digital signal stored in the memory 90. It receives the data restored by the digital signal processing unit 80 and converts it into an analog signal.

The power amplifier 70 amplifies a signal received from the selector 50 or the decoder / decoder 60 into a signal suitable for output to a speaker.

The digital signal processor (DSP) 80 is an arithmetic unit for processing digital signals and compresses a digital signal input through the encoder / decoder 60 or receives compressed data stored in the memory unit 90. After the restoration again serves to send to the decryption / decryption unit (60).

The memory unit 90 converts a signal input through the microphone or the wireless receiver 110 into a digital signal in the recording / decoding unit 60 in the recording mode and stores the compressed data through the digital signal processing unit 80. to be.

The wireless transmitter 100 converts a signal input through the microphone through the audio amplifier 40 and the selector 50 into a wireless signal, and then transmits the signal through a antenna at a specific frequency, such as a radio receiver. To restore the data stored in the memory in the digital signal processor 80, and then convert the analog-converted signal from the decoder / decoder 60 into a wireless signal and then through an antenna. It is responsible for transmitting. At this time, the flow of the signal is controlled by the central processing unit 20.

The radio receiver 110 receives a radio signal such as radio waves through an antenna and performs frequency tuning under the control of the central processing unit 20 to transmit the received signal to the audio amplifier. In order to wirelessly transmit and receive through the antenna at a specific frequency, the central processing unit 20 controls frequency tuning with other radio transceivers.

Although not shown elsewhere, an example of a basic function that operates after a key is pressed will be described in connection with the present invention.

If the user wants to transmit wirelessly, the user presses a setting mode key. The central processing unit receives the information of the key pressed from the keypad unit 10 and reads that the setting mode key has been pressed. The central processing unit 20 again displays the information pressed on the liquid crystal display unit 30. After confirming the information displayed on the liquid crystal display 30, the user presses a key for setting the current mode to the wireless transmission mode. When the key is input again, the central processing unit 20 stores the current setting mode as the wireless transmission mode.

When the user presses the record button in the wireless transmission mode, the voice is input through the microphone and amplified through the audio amplifier 40, and then the signal is input to the selector 50 to control the encoding / decoding unit 60. Send to the wireless transmitter 100 without passing through. The signal input to the wireless transmitter 100 is converted into a wireless signal having a specific frequency by the control of the central processing unit and then transmitted. For example, the signal is received at a specific frequency through a radio and reproduced through a radio speaker.

Next, an example will be described when the user presses the play button in the wireless transmission mode.

When the user presses the play key on the keypad unit 10, the central processing unit 20 determines whether the current mode is a wireless transmission mode, and transmits the data stored in the memory unit 90 to the digital signal processing unit 80. The digital signal processing unit 80 restores the data sent by the central processing unit 20 and sends the data to the encoding / decoding unit 60. The encoder / decoder 60 receives data from the digital signal processor 80 and converts the data into an analog signal. The converted analog signal is input to the wireless transmitter 100 and is converted into a wireless signal having a specific frequency by the control of the central processing unit in the same manner as described above, and then transmitted. Play through the speaker

An embodiment is described when a user wants to operate in a wireless reception mode.

When the user sets the wireless reception mode in the setting mode, the central processing unit stores the current setting mode as the wireless reception mode. When the user presses the recording key in the wireless reception mode, the central processing unit 20 receives the information of the key pressed from the keypad 10 and starts the wireless recording function.

The central processing unit 20 displays the current state on the liquid crystal display unit 30 and then controls to receive a radio signal of a specific frequency through the wireless receiving unit 110 instead of receiving an input from the microphone. The central processing unit 20 controls the selection unit 50 so that a signal is transmitted to the sub / decoder 60 through the audio amplifier 40 through the audio signal received through the wireless receiver 110. The data encoded through the unit 60 is transferred to the digital signal processor 80 under the control of the central processor.

The digital signal processing unit 80 compresses the input data and transmits the contents to the central processing unit 20, and the central processing unit 20 stores the data in the memory unit 90. In some cases, the central processing unit 20 may store the compressed data in the memory unit 90 directly from the digital signal processing unit 80 according to a system configuration.

When the user inputs a stop key during recording, the central processing unit 20 receives this information from the keypad unit 10 to stop the current operation, and displays the stop on the liquid crystal display unit 30.

In addition, when the user presses the play key on the keypad unit 10 in the present wireless reception state, the central processing unit 20 reads it and starts the appropriate operation and displays the contents on the liquid crystal display unit 30. That is, the central processing unit 20 controls the radio receiver 110 to receive a signal, and the signal is transmitted to the audio amplifier 40. The central processing unit 20 controls the selector 50 so that the signal passing through the audio amplifier 40 is transferred directly to the power amplifier without passing through the encoder / decoder 60 and the signal amplified suitably in the power amplifier. Will be output through the speaker.

As described above, according to the voice recorder to which the wireless transmission and reception function of the present invention is added, the following effects are obtained.

First, using the various function keys on the keypad to set the current mode to wireless transmission or wireless reception mode and pressing the play or record key does not perform normal playback or recording operations, but transmits or receives signals through the wireless transmitter or the wireless receiver. You can do it. Using this principle, the radio can play back the contents stored in the voice recorder or vice versa.

Second, using this principle, since the signal received through the microphone built in the voice recorder may be transmitted through the wireless transmitter 100, the voice recorder may be utilized as a wireless microphone.

Third, using this principle, it is possible to play using other wireless devices without passing through existing earphones or speakers, and if the output of another wireless device can be adjusted very large, there is an advantage that the output can be played without limitation.

Claims (3)

A central processing unit for executing and controlling various functions; A wireless receiver for receiving a wireless signal; An audio amplifier for amplifying the radio signal input from the radio receiver or the microphone; A selection unit for selecting whether to digitally or analog convert or bypass the signal input from the audio amplifier; A power amplifier for amplifying a digital / analog conversion or bypassed analog signal to output a received signal to a speaker; A sub / decoder for converting an analog signal input from the selection unit into a digital signal or converting a stored digital signal into an analog signal; A wireless transmitter for wirelessly transmitting a signal output from the encoder / decoder or a signal bypassing the encoder / decoder under the control of the central processor; A digital signal processor for processing the digital signal output from the encoder / decoder through the central processor to be compressed or decompressed and output; And And a memory unit for storing data information, which is converted and compressed into digital signals from the encoder / decoder and the digital signal processor, during the recording operation under the control of the central processor. The central processing unit converts the stored data information into an analog signal suitable for wireless transmission by recovering the compressed data through the digital signal processing unit after receiving the data information from the memory unit and transmitting the stored data information to the encoding / decoding unit. A voice recorder having a wireless transmission and reception function, characterized in that. The voice recorder with a wireless transmission and reception function according to claim 1, comprising a keypad having function keys for performing various functions. The voice recorder having a wireless transmission and reception function according to claim 1, further comprising a liquid crystal display for displaying information necessary for a user under the control of the central processing unit.