JP4118351B2 - Audio information recording device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an audio information recording apparatus for recording audio signals on a recording medium, and more particularly to an audio information recording apparatus having a function of automatically dividing a series of audio information into a file at a predetermined time.
[0002]
[Prior art]
Some audio information recording apparatuses typified by a tape recorder have a function of recording an index mark (separation information) at a content delimiter and detecting the position at a high speed later. In the audio information recording apparatus having such a function, the recording of the delimiter information is instructed by the user to record the mark.
[0003]
Also, one way to use such a voice information recording device is to record a conversation with a customer over the telephone and keep the recorded contents for long periods as evidence. It has become commonplace.
[0004]
[Problems to be solved by the invention]
However, in order to make the user record the delimiter information, it is necessary to set a special instruction button and instruction method in advance and have the user recognize the operation method. Actually, the recording of the delimiter information is often forgotten. In such a case, the delimiter of the file is unclear, so it is managed when the recorded audio information is later played back or saved. Was often difficult. Further, when it is necessary to store the recorded contents for a long time, it is necessary to periodically change the recording medium.
[0005]
The present invention has been made in view of the above points, and by automatically dividing a series of audio information every time a predetermined time elapses, the audio that facilitates management of the audio information at the time of reproduction or storage An object is to provide an information recording apparatus.
[0006]
[Means for Solving the Problems]
To achieve the object, the first audio information recording apparatus of the present invention, in the audio information recording apparatus capable of transferring recorded on the recording medium the voice file to an external apparatus, an analog audio signal A / D Audio recording means for recording converted audio data as audio files on a recording medium, time management means for managing time, and whether or not there is an open audio file when a predetermined time has elapsed An open state detecting means for detecting the sound file, a control means for closing the open sound file when there is an open sound file, and a transfer state of the sound file recorded on the recording medium. a transfer state detecting means, when it is not being transferred in a state where the voice file is closed to the external device is detected and transfers the audio file to the external device And a transmission means.
[0007]
In the second audio information recording apparatus of the present invention, in the first audio information recording apparatus, the audio recording unit is configured to close an audio file being recorded by the control unit during recording of audio data. In this case, a new audio file is generated and recording of the audio data is continued.
[0008]
The third audio information recording apparatus of the present invention, in the first audio information recording apparatus, said transfer means, when the predetermined time has elapsed during the stop of the recording of the audio data by the audio recording means The above transfer is performed.
[0009]
According to a fourth audio information recording apparatus of the present invention, in the first audio information recording apparatus, the transfer state detecting unit detects a transfer state from header information of the audio file.
[0010]
Further, the fifth audio information recording apparatus of the present invention is the first audio information recording apparatus, wherein when the transfer by the transfer means is completed, a header of the audio file recorded on the recording medium is added. Transfer information recording means for writing transfer completion information is provided.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram of an audio information recording apparatus which is an embodiment of the audio information recording apparatus of the present invention. In this audio information recording apparatus, an analog signal obtained from the microphone 1 is amplified by an amplifier (AMP) 2, passed through a low-pass filter (LPF) 3, and then converted by an analog / digital (A / D) converter 4. It converts into a digital signal, and inputs into the digital signal processing (DSP) part 5 which is a component of an audio | voice information transfer means. The digital signal processing unit 5 compresses the sound during the recording operation and expands the sound during the reproduction operation. The operation of the digital signal processing unit 5 is controlled by the system control unit 6, and the compressed sound is sent to the system control unit 6.
[0013]
The system control unit 6 which is a constituent element of the audio information recording unit, time management unit, control unit, and transfer control unit is configured so that the digital signal processing unit 5, the recording medium 7, In addition, the operation of the voice information transfer input / output unit 8 is controlled. That is, the audio data supplied from the digital signal processing unit 5 is recorded on the recording medium 7 based on a predetermined format, or the data recorded on the recording medium 7 is read and supplied to the digital signal processing unit 5. Here, the recording medium 7 is composed of a semiconductor memory such as a flash memory, a magnetic tape, or the like, and may be built in the apparatus or detachable from the apparatus.
[0014]
The read data expanded by the digital signal processing unit 5 is converted into an analog signal by a digital / analog (D / A) converter 9 during reproduction, amplified by an amplifier (AMP) 10, and then output to a speaker 11. The In addition, a digital audio signal is output to the audio information transfer output unit 8 during transfer.
[0015]
In addition, the system control unit 6 controls the drive circuit 12 to display various information such as the operation mode and the current date and time on the display unit 13, and also controls the power supply control unit 14.
[0016]
The buttons connected to the system control unit 6 include a record button REC, a playback button PLAY, a stop button STOP, a fast forward button FF, a fast reverse button REW, a menu selection button MENU, a time setting button UP, and DOWN.
[0017]
Here, it is possible to set the current date and time and when to automatically divide a series of recorded audio information by operating the menu selection button MENU and the time setting buttons UP and DOWN. In this embodiment, the audio information recorded on the recording medium is divided at midnight, and the audio information recorded in one day is set as one audio file.
[0018]
Next, the operation of the audio information recording apparatus having such a configuration will be described in detail with reference to flowcharts.
When power is supplied to the system control unit 6, the system control unit 6 starts an operation as shown in the flowchart of FIG.
[0019]
That is, first, the external conditions of the system control unit 6 and the initial setting of the internal storage unit are performed and displayed on the display 13 (step S1). After completing the initial setting, the apparatus is stopped (step S2), and it is detected whether any of the operation buttons is pressed (step S3).
[0020]
When it is detected that one of the operation buttons has been pressed, it is first detected whether or not it is the record button REC that has been operated (step S4). If the record button REC is pressed, the digital signal processing unit 5 is detected. Is controlled to compress the audio information input from the A / D converter 4 and enter the recording process for recording on the recording medium 7 (step S5).
[0021]
If it is not the record button REC that has been operated, then the playback button PLAY is detected (step S6). Here, if the playback button PLAY is pressed, the data recorded from the recording medium 7 is read out, sent to the digital signal processing unit 5 for expansion processing, and the audio information is sent to the D / A converter 9 The process is started (step S7).
[0022]
When the playback button PLAY is not pressed, the state of the button is detected as to whether or not the fast-forward button FF is pressed (step S8). If the fast-forward button FF has been pressed, a fast-forward process is performed in which the operation position is fast-forwarded at an appropriate speed (for example, 100 times that during reproduction) (step S9).
[0023]
If the fast-forward button FF has not been pressed, it is detected whether the fast-rewind button REW has been pressed (step S10). If the fast-rewind button REW has been pressed, a fast-return process for moving the operating position in the direction opposite to that in the fast-forward operation is entered (step S11).
[0024]
If the fast reverse button REW has not been pressed, whether the menu button MENU has been pressed is detected (step S12). If the menu button MENU is pressed, each time is set according to the menu while detecting the operation of the time setting button UP / DOWN button (step S13).
[0025]
If the menu button MENU has not been pressed, it is assumed that the stop button STOP has been pressed, and the process returns to step S2.
In addition, when the stop button STOP is pressed, the processes in steps S4 to S13 exit from the processes and return to step S2.
[0026]
Next, the recording process in step S5 will be described in more detail with reference to the flowchart of FIG.
When it is detected that the recording button REC has been pressed, the recording process is started. First, an encoding start command signal for compressing the audio information input from the A / D converter 4 is sent to the digital signal processing unit 5 ( Step S21). Next, in order to perform recording on the recording medium 7, it is detected whether or not an open file exists (step S22). If there is no open file, the recording position is read (step S23), A new audio file is created and opened (step S24). The current date and time information is recorded in the header portion of the created audio file (step S25). Various attributes such as recording date and time, whether the file is open, whether it has been transferred, and the like are recorded in the header portion of the audio file.
[0027]
Thereafter, the input frame unit audio data sent from the digital signal processing unit 5 is received (step S28), converted into a predetermined recording format and recorded on the recording medium (step S29), and then recorded at the current address position. The position is updated (step S30).
[0028]
If there is an open file in step S22, it is detected whether a predetermined time set in advance has passed (step S26). If the predetermined time has passed, the delimiter information is stored in the recording medium. After recording and closing the file (step S27), the process proceeds to step S24. If the predetermined time has not passed in step S26, the process proceeds to step S28. Here, as described above, for example, the predetermined time is set to midnight when the date changes.
[0029]
When the steps S21 to S30 are completed, it is detected whether or not the stop button STOP has been pressed (step S31). If not, the process returns to the step S22, and if it has been pressed, the process proceeds to the digital signal processing unit 5. After outputting the encoding stop command (step S32), the recording process is exited.
[0030]
Next, the stop process in step S2 will be described with reference to the flowchart of FIG.
As shown in the figure, when the system control unit 6 is in a stopped state, it closes an open file and transfers it to an external device at a predetermined time.
[0031]
When it is detected that the stop button STOP has been pressed, a stop mode is output to each circuit unit (step S41).
[0032]
Next, it is detected whether there is an open file (step S42), and if there is an open file, it is detected whether a preset time has passed (step S43), and the time when that time is reached Then, the delimiter information is recorded on the recording medium, and the file is closed (step S44).
[0033]
Next, it is detected from the header information of the audio file recorded on the recording medium 7 whether or not there is an audio file that has been closed and has not yet been transferred to the external device (step S45). If the specified file does not exist, the process is exited. If an untransferred file exists, a file transfer command is output to the digital signal processing unit 5 and the recording medium 7 (step S46), and then a data output command is output to the audio information transfer input / output unit 8 (step S47). .
[0034]
Thereafter, it is detected whether or not the file transfer is completed (step S48). When the transfer is completed, transfer completion information is recorded in the file header (step S49), and the process is exited.
[0035]
As described above, in the present embodiment, there is provided means for making it possible to manage the voice information easily in units of dates by converting the input voice information separator information into a file without the user being aware of it.
[0036]
FIG. 5 is a system development view using the audio information recording devices 15 and 16 according to the embodiment of the present invention. In this system, audio information recording devices 15 and 16 are cables 17 and 20, data transfer devices 18 and 21, communication cables 19 and 22, telephone lines 28 and 29, telephone line network 23, telephone line 30, communication cable 24, data A transfer device 25 and a cable 26 are connected to a data storage device 27 such as a personal computer.
[0037]
The audio information recorded by the audio information recording devices 15 and 16 is transferred to the data storage device 27 at a remote location via the data transfer devices 18 and 21 when a predetermined time comes. The data storage device 27 manages the files by rearranging the audio files transferred separately from the plurality of audio information recording devices 15 and 16 in the order of date based on the recording date and time information. The data storage device 27 can be connected to an exchangeable recording medium such as a magneto-optical disk, and if such a recording medium is used, a large number of audio files can be stored efficiently in an easily searchable manner. Is possible. Also, the recording medium on the audio information recording apparatus side can be used efficiently.
[0038]
Therefore, the system described above significantly improves the work efficiency of an insurance company or police that needs to store a large amount of voice information for a long period of time, is inexpensive, and has excellent expandability.
[0039]
【The invention's effect】
According to the present invention, audio information can be easily managed, work for storage can be reduced, and a recording medium can be used efficiently.
[Brief description of the drawings]
FIG. 1 is a block diagram of an audio information recording apparatus as an embodiment of the present invention.
FIG. 2 is an operation flowchart of a system control unit.
FIG. 3 is an operation flowchart of a recording process.
FIG. 4 is an operation flowchart of a stop process.
FIG. 5 is a system development view using the audio information recording apparatus according to the embodiment of the present invention.
[Explanation of symbols]
1 Microphone 2, 10 Amplifier (AMP)
3 Low-pass filter (LPF)
4 Analog / Digital (A / D) Converter 5 Digital Signal Processing Unit (DSP)
6 System control unit 7 Recording medium 8 Audio information transfer input / output unit 9 Digital / analog (D / A) converter 11 Speaker 12 Drive circuit 13 Display unit 14 Power control unit 15, 16 Audio information recording device 17, 20, 26 Cable 18, 21, 25 Data transfer device 19, 22, 24 Communication cable 28, 29, 30 Telephone line 23 Telephone line network 27 Data storage device REC Recording button PLAY Play button STOP Stop button FF Fast forward button REW Fast reverse button MENU Menu selection button UP, DOWN time setting button

Claims (5)

In an audio information recording device capable of transferring an audio file recorded on a recording medium to an external device,
Audio recording means for recording audio data input by A / D converting an analog audio signal as an audio file on a recording medium;
A time management means for managing time;
An open state detecting means for detecting whether or not there is an open audio file when a predetermined time has elapsed;
Control means for closing the open audio file when there is an open audio file;
Transfer state detecting means for detecting a transfer state of the audio file recorded on the recording medium;
Transfer means for transferring the audio file to the external device when it is detected that the audio file is closed and not transferred to the external device;
An audio information recording apparatus comprising:   The voice recording means generates a new voice file and continues recording voice data when the voice file being recorded by the control means is closed during recording of voice data. Item 2. The audio information recording apparatus according to Item 1.   2. The audio information recording apparatus according to claim 1, wherein the transfer unit performs the transfer when the predetermined time elapses while recording of audio data by the audio recording unit is stopped.   The audio information recording apparatus according to claim 1, wherein the transfer state detection unit detects a transfer state from header information of the audio file.   The audio according to claim 1, further comprising transfer information recording means for writing transfer completion information in a header of the audio file recorded on the recording medium when transfer by the transfer means is completed. Information recording device.

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