KR19980069009A - Digital recorder with radio - Google Patents

Abstract

The present invention relates to a digital recorder with a built-in radio for recording and playing digitally without using a tape and for listening to AM or FM broadcast through a built-in radio. Is converted into a digital signal and stored in the digital voice storage, and the tapeless recorder reads and reproduces the signal stored in the digital voice storage from the central processing unit by the key input unit, and the radio is operated by the key input unit. Function as a radio to output a signal.

Description

Digital recorder with radio

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital recorder with a built-in radio. In particular, it is possible to record and play digitally without using a tape and to listen to AM or FM broadcasts through a built-in radio.

In general recorder, the recording is done with the tape inserted in the recorder. When you want to listen to the recorded contents again, you need to insert and play the tape in the recorder to hear the recorded contents.

Therefore, in the conventional recorder, there is a problem in that the structure of the recorder is complicated because of the inconvenience of using the tape and a separate structure for inserting the tape into the recorder.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and it is a digital recorder with a built-in radio that enables simple recording and playback without using a tape, as well as a built-in radio to listen to a radio when necessary. The purpose is to provide.

The present invention for this purpose is to convert the voice signal input through the microphone into a digital signal and to store in the digital voice storage, and to read and reproduce the signal stored in the digital voice storage in the digital processing unit by the operation of the key input unit It can be achieved by performing a function as a tapeless recorder and a radio which outputs a radio signal by operation of a key input unit.

1 is a block diagram of a digital recorder incorporating the present invention radio.

* Description of the symbols for the main parts of the drawings *

1: Key input unit 2: Central processing unit

3: digital voice signal processing unit 4: digital voice storage unit

5: codec IC6: microphone input

7: speaker 8: audio amplifier

9 radio circuit 10 low voltage detection unit

11 voltage amplifier 12 antenna junction

14: earphone

Hereinafter, an embodiment of a digital recorder incorporating the present invention radio will be described in detail with reference to the accompanying drawings.

1 is a block diagram of the present invention, including a play key, a radio on / off key, a stop key, a delete key, a recording key, an FF key, a REW key, a reset key, and a signal to perform a corresponding function when a key is pressed. A digital voice signal under the control of the central processing unit 2 and the central processing unit 2 to perform a corresponding control according to the signal input from the key input unit 1 A digital voice signal processing unit 3 for processing, a digital voice storage unit 4 connected to the digital voice signal processing unit 3 to store digital voice, a microphone input unit 6 for receiving a voice signal, and the digital A codec IC 5 for converting a digital signal output from the voice processing unit 3 into an analog signal and converting an analog voice signal from the microphone input unit 6 into a digital signal, and outputted through the codec IC 5. Analog signal level An audio amplifier 8 for amplifying and outputting the audio signal through the speaker 7, an audio circuit 9 for processing a radio signal under the control of the central processing unit 2, and outputting the radio signal to the audio amplifier 8; The low voltage detector 10 detects when the voltage falls below a predetermined level and outputs the detected voltage to the CPU 2, and a voltage amplifier 11 for supplying operating power to the respective units.

In the figure, reference numeral 12 is an antenna junction, 13 is an earphone jack, 14 is an earphone. However, the line of the earphone serves as an antenna, and when the earphone is connected, the speaker circuit is automatically cut off.

In the present invention configured as described above, the recording process of the digital recorder will be described in detail as follows.

That is, when recording, press REC key twice in a row to be ready for recording. In this case, the Busy LED is turned on to indicate that it is recording.

In this state, when the voice of the person who is recording is input through the microphone input unit 6, the voice analog signal is converted into a digital signal through the codec IC 5.

Then, the digital voice signal is converted into data through the digital voice processing unit 3 and the contents thereof are stored in the digital voice storage unit 4.

Here, the recording is always made of the last message, and when the message is full when the record key is pressed, a beeping sound is generated and the busy LED flashes quickly for 2 seconds and then goes out.

In addition, if the memory is released during recording, a beeping sound is generated and the recording is automatically stopped, and the busy LED goes out.

On the other hand, if the REC key is pressed during recording, the recording is paused by switching to the PAUSE function.

During this pause operation, all other inputs except for the stop key are ignored and the busy LED flashes to indicate that it is in pause.

Hereinafter, a process of reproducing voice data stored in the digital voice storage unit 4 will be described.

That is, when the user wants to play the digital recorder to listen to the stored contents while the voice is stored in the digital voice storage unit 4, when the user presses the play key of the key input unit 1, the central processing unit 2 recognizes the digital signal and the digital signal is recognized. The voice signal processing unit 3 transmits a command to be reproduced.

Therefore, when the digital voice signal processing section 3 reads the contents stored in the digital voice storage section 4, the contents are converted back into analog voice signals through the codec IC 5, and the audio amplification section 8 is read. After being input, the audio amplifier 8 is amplified to a predetermined level and output to the speaker 7 or when the earphone jack 13 is connected to the outside through the earphone 14.

Here, if the playback key is kept pressed during playback, the playback speed is doubled, and if the playback key is released, playback is performed at normal speed. At this time, the LED is lit to indicate that playback is being performed.

In addition, if you press the play key during playback, it will be converted to PAUSE function and playback will be paused.If you want to play again, press the play key again to resume playback. When performing the function, BUSY LED blinks to indicate that it is paused.

Meanwhile, in the present invention, the FF (FAST FORWARD) function and the REW (REWIND) function in general tape use can be performed. Such a function can be used during playback or in a standby state.

That is, if the FF key is pressed during playback, the next message is played. If the FF key is pressed at the last message, a warning sound is generated.

In addition, pressing the REW key during playback now plays the message. When the REW key is pressed in the first message, a warning sound is generated, and when the standby mode is pressed, the current message is changed.

On the other hand, the central processing unit 2 is connected to the low voltage detection unit 10 to detect the voltage state from time to time, if the low voltage state below a certain level is detected in the radio on mode / standby mode or recording / playback mode, the central processing unit Recognizing this in (2), and outputs the beeping sound through the audio amplifier (8) and the speaker (7) six times at 10-second intervals, at which time the input of all keys except the stop key is ignored, the key Press to generate an error tone.

When the low voltage (low battery) is detected at the moment of turning on the power, the beeping sound is repeated five times at 1 second intervals, and the set is stopped.

The present invention can delete stored message contents. If the delete key is pressed during playback, the current message is deleted and the next message is played.

If the deleted message is the last message, the previous message is played immediately after the deletion, and in the standby mode, the delete function cannot be performed in order to prevent unwanted messages from being deleted.

In addition, when the entire memory is to be deleted, if the delete key is pressed for 4 seconds in the standby state, all contents of the memory are deleted.

Hereinafter, the operation of listening to the radio built in the digital recorder of the present invention will be described.

That is, when using the radio in the digital recorder with a built-in radio of the present invention, when the radio on key of the key input unit 1 is pressed, the central processing unit 2 recognizes this and operates the radio circuit 9 to broadcast FM broadcast. Alternatively, the AM broadcast is amplified to a certain level through the audio amplifier 8 and then output to the outside through the speaker 7.

In this case, if the earphone 14 is inserted into the earphone jack 13, the FM broadcast or the AM broadcast is output through the earphone 14, where the long line of the earphone 14 serves as an antenna, and thus the radio circuit 9 → It is connected to the antenna junction (12) → earphone jack 13, so that it is possible to listen to a high-quality broadcast, the sound quality is lowered than when using the earphone 14 when not using the earphone 14 in this way It is preferable to use the earphone 14 when listening to the radio.

On the other hand, if the set does not operate normally, pressing the reset key resets the set. At this time, even if the recorded contents are stored, the recorded contents are not erased and are preserved.

As described above, the digital recorder with a built-in radio of the present invention can perform recording as well as digital recording without using a separate tape as in the related art, and thus can easily perform recording and playback, and the structure is simple. It has the effect of listening to the radio when needed.

Claims (3)

A key input unit (1) including a play key, a radio on / off key, a stop key, a delete key, a recording key, an FF key, a REW key, and a reset key and input a signal to perform a corresponding function when a key is pressed; A central processing unit (2) for performing a corresponding control according to a signal input from the key input unit (1), and a digital voice signal processing unit (3) for processing a digital voice signal under control of the central processing unit (2) And a digital voice storage unit 4 connected to the digital voice signal processing unit 3 to store digital voice, a microphone input unit 6 for receiving a voice signal, and a digital output from the digital voice processing unit 3. A signal is converted into an analog signal and the codec IC 5 converts the analog voice signal of the microphone input unit 6 into a digital signal, and the analog signal outputted through the codec IC 5 is amplified to a predetermined level. Via (7) And an audio amplifier 9 for processing the radio signal under the control of the central processing unit 2 and outputting the audio signal to the audio amplifier 8, and a voltage at a predetermined level or less. Digital low-power detection unit comprising a low voltage detection unit 10 for detecting when falling and outputting to the central processing unit (2), and a voltage amplification unit (11) for supplying operating power to the respective parts. Recorder. 2. The digital recorder with a built-in radio according to claim 1, wherein the busy LED is flashed while the REC key is pressed during the recording. 2. The digital recorder with a built-in radio according to claim 1, wherein the playback speed is doubled when the playback key is pressed during playback, and playback is performed at a normal speed when the playback key is released.