JP2003223190A - Data recording and reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data recording and reproducing apparatus preventing inadvertent reproduction of audio data in high volume even when reproducing audio data with different recording levels. <P>SOLUTION: The data recording and reproducing apparatus is provided with a warning means which gives warning if the volume value is higher than the prescribed value when the operating mode is changed from recorder mode to player mode. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data recording / reproducing apparatus, and more particularly to a data recording / reproducing apparatus having a reproducing function in consideration of a volume setting value.

[0002]

2. Description of the Related Art Conventionally, a so-called semiconductor audio player has been commercialized, which converts compressed music data recorded in a semiconductor memory into an audio signal and outputs the audio signal through headphones or the like. Among them, a function called the voice memo function that inputs dictation and meeting contents using the microphone built in the main unit, converts it into digital data in the internal circuit, and records it in the built-in semiconductor memory Some have.

In such a semiconductor audio player, normal music data among audio data, for example, music data such as pops is recorded at a relatively high recording level. On the other hand, of the audio data, music data to be recorded by the voice memo function is recorded at a relatively low recording level depending on the characteristics of the microphone or the recorded contents.

[0004]

However, in such a case, when the music data and the audio data are reproduced at the same attenuation rate with respect to the reference signal, the recording levels are different, so that the reproduction level of the audio data is different. Is lower than the playback level of music data.

Therefore, for example, when the music data is reproduced after adjusting the volume value suitable for reproducing the music data and reproducing the voice data, the reproduction level may be too high for reproducing the music data. It was a problem.

To deal with such a problem, in an actual product, a method of separately providing a reproduction level of music data and a volume value of audio data is adopted. However, in such a method, since the reproduction volume value of the music data and the reproduction volume value of the audio data are not linked, if the volume value is lowered while listening to the audio data, the reproduction volume value of the music data will be Although it has not decreased, it is determined that the reproduction volume value of the music data has also decreased, and there is a risk that the music data will be reproduced when the reproduction volume value is too large.

The object of the present invention was made in view of the above problems. The object of the present invention is to inadvertently reproduce a large volume of audio data when reproducing audio data having different recording levels. An object of the present invention is to provide a data recording / reproducing apparatus that does not have such a problem.

[0008]

A data recording / reproducing apparatus according to the present invention is capable of recording input audio data on a recording medium and reproducing the audio data recorded on the recording medium. In a data recording / reproducing apparatus having a first operation mode and a second operation mode capable of reproducing only audio data recorded on the recording medium, the volume value is changed when the operation mode is changed. A warning means is provided for giving a warning when the value is equal to or larger than a predetermined value.

Further, when the operation mode is changed, when the volume value is equal to or more than a predetermined value, a prohibition means for prohibiting reproduction of the audio data until a predetermined operation is further provided. .

Further, the warning means and the prohibition means are characterized in that the warning and the reproduction are prohibited only when the first operation mode is changed to the second operation mode.

Further, when the volume value is set to be equal to or less than the predetermined value while the reproduction of the audio data is prohibited, a canceling means for canceling the reproduction prohibition of the audio data is further provided.

Further, the first operation mode capable of both recording the input voice data in the recording medium and reproducing the voice data recorded in the recording medium, and the first operation mode recorded in the recording medium. A data recording / reproducing apparatus having a second operation mode in which only one of the reproduced audio data can be reproduced, a detection means for detecting a transition of the operation mode, a reproduction instruction means for instructing reproduction of the audio data When the reproduction of audio data is instructed by the volume value setting means for setting the volume value and the reproduction instructing means, the transition of the operation mode is detected by the detecting means and set by the volume value setting means. And a warning means for issuing a warning when the volume value is equal to or larger than a predetermined value.

Further, when the reproduction instructing means gives an instruction to reproduce the audio data, the detecting means detects the shift of the operation mode, and the volume value set by the volume value setting means is equal to or more than a predetermined value. If there is, it is characterized by further comprising a prohibition unit that invalidates the reproduction instruction of the audio data and prohibits the reproduction of the audio data.

Further, when the volume value setting means sets the volume value to the predetermined value or less while the reproduction of the audio data is prohibited, or when the reproduction instruction information again instructs the reproduction of the audio data. Further, it is characterized by further comprising a releasing means for releasing the reproduction inhibition of the audio data.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing the configuration of an audio recording / reproducing apparatus according to an embodiment of the present invention. First, in the audio recording / reproducing apparatus, each block will be described along the flow of signals when audio is recorded. As shown in FIG. 1, the audio recording / reproducing apparatus of the present embodiment includes a microphone 101 for converting audio into an electric signal and a microphone jack 102 for inputting an audio signal from an external device such as an external microphone. Then, which of these is used is selected by the input selector switch 103. The input selector switch 103 is configured to select the microphone jack 102 when the terminal connected to the external device is connected to the microphone jack 102, and to select the microphone 101 otherwise. ing. In the present embodiment, both the microphone 101 and the microphone jack 102 are monaural inputs with one audio channel.

Then, the audio signal selected by the input selector switch 103 is input to the preamplifier 104 and amplified. The control of the amplification factor or power supply of the preamplifier 104 is controlled by the control circuit CPU 116 which controls the overall operation of the audio recording / reproducing apparatus. The audio signal amplified by the preamplifier 104 is input to the input amplifier 105a of the stereo codec 105 that converts the signal between the audio signal and the digital signal. The audio signal is amplified again here, and then input to the A / D converter R105b and the A / D converter L105c that convert the analog audio signal into a digital signal. Then, the audio signal is converted into a digital audio signal here and input to the digital filter 105d. The stereo codec 105 itself supports conversion of analog signals from stereo signals to digital signals and conversion of digital signals to analog signals. Therefore, the A / D converter is also connected to the right channel and left channel 105b. Two microphones 105c are provided, but a microphone 101 or a microphone jack 102 is provided.
Is a monaural input, one input signal is input to each of the A / D converters 105b and 105b as described above.
The configuration is such that both are input to c.

Next, in the digital filter 105d, processing such as removing unnecessary quantization noise called aliasing noise generated when the above-mentioned audio signal is converted into a digital audio signal from the digital audio signal is performed. Done. Then, the digital audio signal from which the quantization noise has been removed is processed by the digital signal processing unit (hereinafter referred to as DSP).
Abbreviated. ) 114. Under the control of the CPU 116, the DSP 114 encodes (compresses and converts) the input digital audio signal in a frame unit in accordance with a predetermined format to generate encoded data.
In this audio recording / playback device, Digital Speech Standard
An encoding method called (hereinafter abbreviated as DSS) is used. The encoded data generated in this way is transferred to the memory card 117 as an encoded data recording unit. The memory card 117 is composed of a semiconductor memory such as a flash memory having a card shape that can be attached to and detached from the main body of the audio recording / reproducing apparatus. Specifically, Sm
There is Art Media (registered trademark) and the like, and a case where this voice recording / reproducing apparatus is used will be described. The encoded data is stored in the CPU via the bidirectional bus transceiver IC115.
Under the control of 116, the data is sequentially written in a predetermined address in the memory card 117. The memory card 11
The encoded data written in 7 is treated as a unit of a file (the encoded data file encoded by the DSS method will be referred to as a DSS file hereinafter). Further, since the audio recording in the audio recording / reproducing apparatus is performed in monaural, only the encoded data of the digital audio signal output from the A / D converter R105b side is recorded in the memory card 117. It has become.

Next, the function of each block will be described along with the signal flow when reproducing the encoded data recorded in the memory card 117. First, the encoded data is sequentially transferred from the memory card 117 to the DSP 114. The encoded data transferred to the DSP 114 is the CPU 116.
Under the control of, the digital audio signal is decoded (expanded and converted) in a predetermined frame unit. The memory card 117 can also record encoded data other than DSS files, as will be described later. Therefore, D
In SP114, it is determined which encoding method is used for the encoded data sent from the memory card 117, and the encoded data is decoded according to the encoding method.

Further, the audio recording / reproducing apparatus of this embodiment is a Windows Media of Microsoft Corporation (registered trademark).
(Registered trademark) method (hereinafter referred to as WMA method, and its encoded data file is referred to as WMA file), Motion P
icture Experts Groupe-1 AudioLayer3 method (hereinafter MP
3 system and the encoded data file is described as MP3 file. ) And three DSS decoding schemes. The decoded digital audio signal is transferred to the stereo codec 105. The transferred digital audio signal is subjected to removal of unnecessary quantization noise in the digital filter 105d in the stereo codec 105. After that, D / for each left and right channel
A converter R105e and D / A converter L1
In 05f, the digital audio signal is converted into an analog audio signal, the output amplifier R105g and the output amplifier L105h amplify the signal, and the signal is output from the stereo codec 105. If the original encoded data is monaural data, the same signal is input to both the left and right channels, processed, and then output.

The output signals of the left and right channel audio signals output from the stereo codec 105 are switched by the output selector switches 106 and 107 which are interlocked with each other. At the output destination of the audio signal, a headphone terminal R111 and a headphone terminal L112 for connecting an external headphone or the like to reproduce the audio signal by using an external reproduction device, and a speaker 113 provided in the main body of the audio recording / reproducing apparatus. Two are prepared. further,
Set the output selector switches 106 and 107 to 106a,
When switched to the 107a side, the headphone terminal R111 and the headphone terminal L112 are selected as the output destinations, and the audio signal is amplified by the headphone amplifier R108 and the headphone amplifier L109 at an amplification rate according to the output from the headphone terminal, and left and right. It is output for each channel. Set the output selector switches 106 and 107 to 106
When switching to the b or 107b side, the speaker 113 is selected as the output destination. The speaker 113
Since only one audio signal is built in the main body, the audio signal is amplified by the speaker amplifier 110 at an appropriate amplification rate after being combined with the signals of the left and right channels, and is output from the speaker 113. Further, the control circuit CPU 116 is connected with some circuits and the like in addition to those described above.

The display unit 119 is composed of a two-color LED and a liquid crystal display having a backlight, and displays the operating state of the audio recording / reproducing apparatus. The display drive circuit 118 controls the display unit 11 under the control of the CPU 116.
9 is driven to display. The operation switch group 120, which will be described in detail later, is an operation switch that is provided on the exterior of the audio recording / reproducing apparatus and controls various functions. Power supply circuit 1
Reference numeral 21 denotes a circuit for supplying electric power for driving the audio recording / reproducing apparatus, which includes a battery, a battery check circuit, a power-on reset circuit, a booster circuit, a step-down circuit,
And a circuit relating to power supply control such as an external power supply connection circuit.

The built-in memory 122 is composed of an EEPROM, which is a rewritable nonvolatile memory built in the main body, and has a user ID and a recording mode (standard mode /
Long-time mode) selection setting, beep sound (ON / OFF)
The various settings, parameters, etc., which are desired to be recorded even when power is not supplied to the CPU 116, such as the selection settings of the above, the reproduction position of data, and the like are recorded. The audio recording / reproducing apparatus can be connected to an external device such as a personal computer. The audio recording / reproducing apparatus is connected to an external device and performs bidirectional communication to transfer, for example, an encoded data file recorded in a hard disk of a personal computer to the memory card 117 or vice versa. The encoded data file recorded in 117 is transferred to a recording medium on the personal computer side, or the audio signal input from the microphone 101 is converted into a digital audio signal by the stereo codec 105 and encoded by the DSP 114. For example, recording the data directly on the recording medium of the personal computer side,
In addition to this, various processes can be performed.

In order to communicate with an external device such as the above-mentioned personal computer, the audio recording / reproducing apparatus of the present embodiment uses Un
It is configured to connect via an interface called iversal serial bus (hereinafter referred to as USB). The external connection terminal 124 is a connection terminal for connecting to a USB cable, is controlled by the communication driver 123, and is connected to the CPU 116 via the internal bus. The bidirectional bus transceiver IC 115 has a connection terminal on the audio recording / reproducing device side of a memory card 117 (not shown),
It is provided in the bus line in order to cut off the connection between the CPU 116 and the USB connection terminal 124. This is because when the USB cable is connected to the external connection terminal 124 and the CPU 116 is communicating with an external device and the memory card 117 is inserted, the bus lines are electrically short-circuited. And
This is for preventing the memory card 117 and the CPU 116 from being damaged. Therefore, when the memory card 117 is not loaded and the CPU 116 is communicating with an external device via the USB connection terminal 124, the bidirectional bus transceiver IC 115 is connected to the connection terminal on the audio recording / reproducing device side of the memory card 117. , CPU1
It is configured to cut off the connection with 16.

The operation mode of the audio recording / reproducing apparatus will be described below. This audio recording / reproducing apparatus has two operation modes. One is a first mode (hereinafter referred to as a recorder mode) in which a voice input from a microphone or a microphone jack can be recorded and the recorded one can be reproduced, and the other is a first mode. This is the second mode (hereinafter referred to as the player mode) specialized for reproducing the encoded data file recorded on the recording medium, in which the recording operation cannot be performed.

In the recorder / player of the present embodiment, the recorder mode is mainly intended for use in message memos, dictation, conference recording, etc., and the encoding method is a high compression DSS suitable for long-term recording. Method will be used. In the player mode, it is assumed that the user mainly listens to music, and the WMA method capable of high-quality sound reproduction,
And MP3 encoding is used.

Next, the outline of the audio recording / reproducing apparatus will be described from the outside with reference to FIGS. 2 and 3. FIG. 2 is a view of the external appearance of the audio recording / reproducing apparatus according to the present embodiment as seen obliquely from the front, and FIG. 3 is a view as seen from the oblique rear. A main display unit 202 is arranged on the front surface of the main body 201. The main display unit 202 is composed of an LCD display device, and can perform various displays such as a battery level, a recording mode, a file number, a user ID, various time displays, and an operation status display. Further, when the operation button is operated, the backlight is turned on for several seconds. Also, the record button 203
Is a button for instructing the start of voice recording. This record button 203 can be operated only in the recorder mode,
When operated in the player mode, an error alarm sounds and the recording start instruction is ignored. The stop button 204 is a button for instructing to stop those operations when the apparatus is in operation such as recording and reproducing. The playback button 205 is a button for instructing to start playback of the encoded data file recorded in the memory card 117. Rewind button 206
Is a button for rewinding the coded data file being played, decrementing the file number when selecting the coded data file to be played, and decrementing the parameter when setting the menu. is there.
The fast-forward button 207 is used for fast-forwarding or fast-forwarding reproduction of the encoded data file being reproduced, incrementing the file number when selecting the encoded data file to be reproduced, or incrementing the parameter when setting the menu. It is a button for doing. In addition, the rewind button 20
6 and the fast-forward button 207 are integrally configured, and are so-called seesaw switches. The delete button 208 is a button for deleting the encoded data file selected by using the fast-return button 206 or the fast-forward button 207 from the memory card 117. Specifically, when the coded data file to be deleted is selected and the delete button is pressed once, the coded data file to be deleted is displayed in blinking on the display window 202. The operation of pressing the delete button 208 is performed. Thereby, the desired encoded data file can be erased from the memory card 117.

The index button 209 has a different function in the recorder mode and the player mode. In the recorder mode, the index mark is added to the encoded data file being recorded. The maximum number of index marks that can be recorded is 16 per file. In the player mode, several kinds of frequency characteristics suitable for the music to be reproduced (5 kinds of normal, pops, jazz, classical music, and user-defined in this voice recording / reproducing apparatus) are prepared in advance. This is a button for selecting a desired frequency characteristic and changing the reproduced sound. The menu button 210 is a button for making various settings relating to the audio recording / reproducing apparatus such as recording mode setting, clock setting, and user ID setting. Further, in the player mode, it is possible to switch the surround effect or the special effect such as bass amplification. The folder button 211 is a button whose function is different between the recorder mode and the player mode. In the recorder mode, the memory card 11
Although a plurality of folders are prepared for storing the encoded data file in 7, it functions as a button for switching between them. In player mode,
It functions as a button for setting the playback mode.

Further, in the case of this audio recording / reproducing apparatus, all the coded files handled in the player mode are sequentially reproduced only once (normal reproduction mode), and only one file is repeatedly reproduced (one-beat peat reproduction mode). All coded files handled in player mode are repeatedly played in sequence (all-track repeat playback mode), coded files handled in player mode are randomly played repeatedly (random repeat playback mode), and coded files handled in player mode are once. Each can be played in random order (random playback mode), and can be selected from.

The headphone jack 212 is for outputting a sound signal to a headphone, an external speaker or an external sound processing device, and a headphone terminal R111 and a headphone terminal L112 are arranged inside. Also, the reproduced sound can be output from the speaker 213. The reproduction output switching mechanism outputs a reproduction signal from the headphone jack if a plug is inserted in the headphone jack 212, and outputs a reproduction sound from the speaker 213 if no plug is inserted in the headphone jack 212. Is configured. A warning signal or a warning sound can be generated from the headphone jack 212 and the speaker 213. The microphone jack 214 is a jack for inputting an audio signal from an external microphone or an external audio processing device. Separately from this, a microphone 215 is also built in the main body. Similar to the reproduction output, these audio signal input switching mechanisms input the audio signal from the microphone jack 214 if the plug is inserted into the microphone jack 214, and output the audio signal from the microphone 215 if the plug is not inserted. It is configured to input a signal.

Next, the indicator 216 mainly displays the state of the reproducing or recording operation, and uses a two-color LED. It is configured so that it lights up in green during reproduction and lights up in red during recording. The indicator 216 is also used for displaying a warning, and when a warning is given to the user for some reason, a blinking display in red is performed. The volume knob 217 has a headphone jack 2
It is for adjusting the output level from the speaker 12 and the speaker 213. In addition, the recording medium insertion port 218 is
An opening for inserting the memory card 117. The operation mode switch 219 is a switch for switching the operation mode of the audio recording / reproducing apparatus between the recorder mode and the player mode described above. The microphone sensitivity switch 220 is a switch for setting the input level of the microphone 215, and can switch between high sensitivity (conference mode) and low sensitivity (dictation mode).

The hold switch 221 sets a so-called hold function that invalidates the operation input of the push button switch and shifts the operation mode of the audio recording / reproducing apparatus to the power saving mode when the operation is stopped. , And a switch for releasing. The power jack 222 is for connecting to an external power source and receiving power from the outside. The eject knob 223 is
This is for taking out the memory card 117 inserted from the recording medium insertion port 218. The battery cover 224 is
It is a lid that covers the battery compartment. The external connection terminal 225 is
A terminal for connecting to an external device such as a personal computer for communication. This audio recording / reproducing apparatus uses a USB terminal. The main switch 226 is a switch for turning ON / OFF the operation of the audio recording / reproducing apparatus. The power switch 226 is configured to mechanically engage the eject knob 223 in the ON state so that the memory card 117 cannot be taken out. The various operation buttons described above are push button switches, and the switch state is assumed to be turned on by a pressing operation.

Next, with reference to FIG. 4, how data is recorded in the memory card 117 used in the audio recording / reproducing apparatus will be described. At the root of the memory card 117, an encoded data file 41, a song order data file 42, a DSS file folder 43, 4
4, 45 and the codec data folder 54 are recorded. The encoded data file 41 has an MP extension
3 or WMA, which indicates that they are music data files encoded by the MP3 system or the WMA system.

These are encoded data files that can be reproduced in the player mode described above. The music order data file 42 is a file that has, as table data, the reproduction order of the encoded data file that can be reproduced in the player mode described above. When it is desired to change the reproduction order of the encoded data file in the player mode, the music order file 42 is rewritten under the control of the CPU 116. The DSS file folders 43, 44, and 45 are DS
This is a folder for storing S files. In the recorder mode, in order to organize DSS files, A,
Three folders B and C are provided, and the DSS file folders 43, 44, and 45 are these folders A,
Corresponds to B and C. DSS file folders 43, 4
DSS files 46, 47, and 48 are assigned to 4 and 45, respectively.
Are stored, and these can be reproduced in the recorder mode. Further, at the time of recording, a DSS file is created in any of these DSS file folders 43, 44, 45. The reproduction order of the DSS files 46, 47, 48 is recorded in the reproduction order data files 51, 52, 53 as table data for each folder.

In consideration of the display capability of the display unit 202, the usability of the operator, etc., in the audio recording / reproducing apparatus of the present embodiment, the number of recordable files per folder is 199 in the recorder mode. 597 overall
The case. In the DSS file folder 43, a folder name data file 49 and a recovery data file 50 are recorded in addition to the above files. In the audio recording / reproducing apparatus, the folders A, B, and C described above can change the display name on the main display unit 202 to an arbitrary display name. The folder name data file 49 records data for associating the display name with the DSS folder files 43, 44, 45. Also, the recovery data file 50 is
This is a file in which data for recovery is recorded when the data in the S file folders 43, 44, 45 is destroyed. The codec folder 54 is
This is a folder for storing codec files 55 and 56 of encoded data files reproduced in the player mode. The first three characters of the file names of the codec files 55 and 56 use the extension of the corresponding encoded data file. Also, the extension of these codec files is img. The codec file for recording and playback in the recorder mode is the CPU
It is stored in the ROM in 116.

Next, FIG. 5 is a diagram showing a reproduction level adjustment table of the recording / reproducing apparatus. In the table, the index value is the value of the index displayed on the volume knob 217. For the volume instruction value, the output of the volume adjusting device 125 is set to the CPU 116.
Is the value read by A / D conversion. The set attenuation value is
It is a value indicating how much the reference signal level (or maximum signal level) output from the output amplifiers 105g and 105h is attenuated. Further, the set attenuation value is the CPU 116.
It is determined by the volume indication value read by.

Next, FIG. 6 is a diagram showing a main flow of the embodiment of the present invention. As shown in FIG. 6, initialization is performed in S1, and the process proceeds to S2. In S2, it is determined whether the recorder mode or the player mode. If it is the player mode, the process proceeds to S3. In S3, the F (flag) is set to 1 when the recorder mode is switched to the player mode.
Stand and proceed to S5. If the recorder mode was originally set without switching from the recorder mode to the player mode, 1 is not set in F and the process proceeds to S5. In S5, it is determined whether or not the record button 203 has been pressed. If the record button 203 is pressed, a warning display is displayed, the process proceeds to S7, and the record button 2
If 03 is not pressed, the process directly proceeds to S7.

Next, in S7, it is determined whether or not the play button 205 has been pressed. If the play button 205 is pressed,
The reproduction process described later is performed, and the process proceeds to S9. If the reproduction button 205 is not pressed, the process directly proceeds to S9. In S9,
Determine if the fast forward button was pressed. If the fast forward button 207 is pressed, fast forward is performed, and the process proceeds to S11, where the fast forward button 20
If 7 is not pressed, the process directly proceeds to S11. S11
Then, it is determined whether or not the fast return button 206 has been pressed. If the fast-return button 206 is pressed, rewinding is performed, and the process proceeds to S13. If the fast-return button 206 is not pressed, the process is continued at S13.
Proceed to. In S13, it is determined whether or not the stop button 204 has been pressed. When the stop button 204 is pressed, if any operation process is being performed, those processes are stopped, and the process proceeds to S15. If the stop button 204 is not pressed, the process proceeds to S15. In S15, it is determined whether the menu button 210 has been pressed. If the menu button 210 is pressed, menu setting processing is performed, and the process proceeds to S16. If the menu button 210 is not pressed, the process proceeds to S16. In S16, it is determined whether the delete button 208 has been pressed. If the delete button 208 is pressed, the deletion is performed and the process returns to S1. If the delete button 208 is not pressed, the process returns to S1.

On the other hand, if it is determined in S2 that the recorder mode is selected, the process proceeds to S19. In S19, the record button 2
It is determined whether 03 is pressed. When the record button 203 is pressed, recording is performed, the process proceeds to S21, and the record button 2
If 03 is not pressed, the process proceeds to S21. next,
In S21, it is determined whether the play button 205 has been pressed. If the playback button 205 is pressed, playback is performed and S2
If the playback button 205 is not pressed, go to step S23.
Proceed to. In S23, it is determined whether or not the fast-forward button 207 has been pressed. If the fast-forward button 207 is pressed, fast-forwarding is performed, and the process proceeds to S25. If the fast-forward button 207 is not pressed, the process proceeds to S25. In S25, it is determined whether the fast return button 206 has been pressed. If the fast-return button 206 is pressed, rewinding is performed, and the process proceeds to S27. If the fast-return button 206 is not pressed, the process proceeds to S27. In S27, it is determined whether the menu button 210 has been pressed. If the menu button 210 is pressed, menu setting processing is performed,
If the menu button 210 has not been pressed, the process proceeds to S29. In S29, it is determined whether the delete button 208 has been pressed. If the delete button 208 is pressed, the deletion is performed and the process returns to S1. If the delete button 208 is not pressed, the process returns to S1.

Next, in FIG. 7, in step S7, the reproduction button 205
It is a figure showing the flow of the reproduction processing when is pressed.
As shown in FIG. 7, when the playback mode is entered, in S30, F
It is determined whether or not 1 is set in the (flag). When 1 is set in F, the process proceeds to S32, and it is determined whether the index value of the reproduction volume is 6 or more, that is, the warning volume value. The judgment level for the volume instruction value is 18. When the reproduction volume instruction value is 6 or more, the process proceeds to S34, and a warning that the reproduction volume index value is 6 or more is issued. This warning may be displayed on the screen or may be a beep sound or the like so that it can be understood by the user. Next, after giving a warning in S34, the process proceeds to S36 to prompt the user to judge whether or not to reproduce. If the play button 205 is pressed here, S3
Proceed to step 8 to perform reproduction. On the other hand, when F is not standing in S30 (F = 0), the process proceeds to S38 and reproduction is performed. Also,
Even if the index value of the reproduction volume is less than 6 in S32, the process similarly proceeds to S38 and reproduction is performed. If the play button 205 is not pressed in S36, the process proceeds to S42, and it is determined whether or not the stop button 204 is pressed. If it is determined in S42 that the stop button 204 has been pressed, the process ends and the process returns to the original flowchart. On the other hand, if it is determined that the stop button 204 has not been pressed, S3 is performed.
Return to 6. That is, the determination in S36 and S42 is repeated until either the play button 205 or the stop button 204 is pressed. Then, after playing in S38,
The process proceeds to S40, returns F to 0, and ends.

In the embodiment of the present invention, the first operation mode capable of both recording the input audio data in the recording medium and reproducing the audio data recorded in the recording medium. And a second operation mode in which only one of the reproduction of the audio data recorded in the recording medium is possible, but the second operation mode is a mode in which only recording is not possible. Other operations such as searching and erasing data are possible. Note that the warning volume value has been described as a fixed value (index value 6, volume instruction value 18) in the present embodiment, but the present invention is not limited to this, and for example, it is recorded as a variable value in the built-in memory 122, and the menu A step of changing the warning volume value in the setting process may be added so that the user can change the value to a desired value. Further, with the same configuration, the user can determine in the menu setting process whether or not to perform the processes of S30 to S36, and according to the setting, these processes can be skipped before S30. The flow of the reproduction process may be changed.

As described above, by using the embodiment of the present invention, even if the reproduction volume is excessively high, the user is warned and the reproduction volume value is selected by the user. Higher than
At this time, by lowering the reproduction volume value, reproduction can be performed with the reproduction volume value intended by the user.

[0043]

By using the present invention, even when reproducing audio data having different recording levels,
It is possible to prevent the audio data from being inadvertently reproduced at a high volume.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an audio recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing an external appearance of the audio recording / reproducing apparatus according to the embodiment of the present invention as seen obliquely from the front.

FIG. 3 is a diagram showing an external appearance of the audio recording / reproducing apparatus according to the embodiment of the present invention as seen obliquely from behind.

FIG. 4 is a diagram explaining a data recording method of the memory card according to the embodiment of the present invention.

FIG. 5 is a diagram showing a reproduction level adjustment table of the recording / reproducing apparatus according to the embodiment of the present invention.

FIG. 6 is a diagram showing a main flow according to the embodiment of the present invention.

FIG. 7 is a diagram showing a flow of reproduction in the player mode according to the embodiment of the present invention.

[Explanation of symbols]

113 ... speaker, 117 ... memory card, 41 ... encoded data file, 54 ... codec folder, 5
5, 56 ... Codec file, 101 ... Microphone, 10
3 ... Input selector switch, 104 ... Preamplifier, 105 ...
Stereo codec, 114 ... Digital signal processing unit, 1
15 ... Bidirectional bus transceiver IC 117 ... Memory card 118 ... Display drive circuit 119 ... Display unit 120
... Operation switch group, 121 ... Power supply circuit, 122 ... Built-in memory, 123 ... Communication driver, 124 ... External connection terminal

Claims (7)

[Claims] 1. A first operation mode capable of both recording input audio data in a recording medium and reproducing audio data recorded in the recording medium, and recording in the recording medium. In a data recording / reproducing apparatus having a second operation mode in which only one of the reproduced audio data can be reproduced, a warning is issued when the volume value is equal to or more than a predetermined value when the operation mode is changed. A data recording / reproducing apparatus comprising means. 2. When the operation mode is changed, when the volume value is equal to or more than a predetermined value, a prohibition means for prohibiting reproduction of the audio data until a predetermined operation is further provided. The data recording / reproducing apparatus according to claim 1. 3. The warning means and the prohibition means carry out the warning and the prohibition of the reproduction only when the first operation mode is changed to the second operation mode. Data recording / reproducing device 4. A canceling means for canceling the reproduction prohibition of the audio data when the volume value is set to the predetermined value or less during the reproduction prohibition of the audio data. 2. The data recording / reproducing apparatus according to item 2. 5. A first operation mode capable of both recording input audio data in a recording medium and reproducing audio data recorded in the recording medium, and recording in the recording medium. A data recording / reproducing apparatus having a second operation mode in which only one of the reproduced audio data can be reproduced; When the reproduction of audio data is instructed by the volume value setting means for setting the volume value and the reproduction instructing means, the transition of the operation mode is detected by the detecting means and set by the volume value setting means. A data recording / reproducing apparatus comprising: a warning unit for issuing a warning when the volume value is equal to or larger than a predetermined value. 6. When the reproduction instructing means gives an instruction to reproduce the audio data, the detecting means detects the transition of the operation mode, and the volume value set by the volume value setting means is a predetermined value or more. 6. The data recording / reproducing apparatus according to claim 5, further comprising a prohibiting unit for invalidating the reproduction instruction of the audio data and prohibiting the reproduction of the audio data when there is. 7. When the volume value is set to a value equal to or less than the predetermined value by the volume value setting means while the reproduction of the audio data is prohibited, or when the reproduction of the audio data is instructed again by the reproduction instruction information. 7. The data recording / reproducing apparatus according to claim 6, further comprising a releasing unit for releasing the reproduction inhibition of the audio data.