JP2003288099A - Voice recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a voice recorder for easily retrieving voice data not stored in an external storage device and for storing the retrieved voice data in the external storage device. <P>SOLUTION: A voice recorder 702 successively records the voice data generated by performing voice compression of call signals inputted via a communication line. The voice recorder is provided with: a recording part having a voice data recording area part 401 that records the voice data, and an index data recording area part 402 for recording index data for managing the voice data; a control part 2 that generates and stores a call file corresponding to a new piece of voice data whenever the new piece of the voice data is recorded in the voice data recording area part and deletes storage of the call files whenever the call files are outputted according to a transfer request from the outside; and a data input/output part 5 that outputs the call files and the voice data according to the transfer request from the outside. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voice recording device, and more particularly to a voice recording device for recording a voice signal transmitted / received via a communication line such as a telephone.

[0002]

2. Description of the Related Art A voice recording apparatus which is connected to a plurality of telephone lines and encodes an input voice signal of a call and records it as voice data is usually a detector for detecting the start and end of the call for each telephone line. Each time a call is detected, it is recorded in the voice recording device. At this time, information such as the date and time of the call, the channel, etc. is associated with the voice data and recorded as index data, so that specific voice data can be searched and reproduced based on the index data.

In order to detect a period (busy period) from the start to the end of the call for each telephone line, it is determined that the voice signal is busy when the signal level of the input voice signal exceeds a certain threshold value. There is a level detection method, or a voltage detection method that determines that the telephone is busy based on the DC voltage of the line that changes depending on whether the connected telephone is on-hook or off-hook.

Further, since the capacity of the audio recording device for recording the audio data is limited, in order to store the audio data for a long period of time, the audio data recorded in the audio recording device is stored in a DAT (Digital Audio Tape) or the like. It is necessary to record it on removable media and save it.
In this case, the removable medium is managed by attaching a label in which information such as when audio data is recorded is attached. Therefore, by using this label, the audio data recorded on the removable medium can be searched. Since the number of telephone lines that can be connected to the voice recording device is limited, a plurality of voice recording devices are required for a large-scale call center that uses several hundred lines.

[0005]

As described above, when a label recording the date and time when the call data is recorded is attached to the removable medium, and when the date and time when the desired call data to be searched is recorded are known. It is possible to identify the removable medium in which the desired call data is recorded by browsing the label.
However, when there are many removable media in which call data is recorded, it is difficult to identify the removable media in which the desired call data is recorded from a large number of removable media.

On the other hand, when the date and time when the desired call data is recorded is unknown, for example, when the person-in-charge code is recorded as index data by DTMF (Dual Tone Multi-Frequency) included in the voice signal of the call, etc. In the case of searching the call data of a specific person-in-charge code, it is necessary to play the removable media one by one and check the data.

In addition, when a plurality of voice recording devices are installed and the operation mode (free seating) in which the terminal (telephone) used by the operator changes day by day is adopted, a call of a specific operator is made. Audio data may be recorded on separate audio recording devices. Therefore, when trying to retrieve the voice data of a call made by a specific operator, it is necessary to retrieve all the removable media in which the call data of all the voice recording devices are recorded.

As a solution to these problems, an external storage device (for example, a large-capacity hard disk device) for transferring and storing all the audio data recorded in the audio recording device is prepared,
Of the audio data recorded in the audio recording device in the storage device, untransferred audio data is searched for in the external storage device, transferred and stored therein, and the desired audio data is stored in the transferred and stored external storage device. It is possible to search the data. However, if this idea is simply realized, the processing load of the control unit for controlling the voice recording device increases. That is, in addition to the recording process of the audio data, the control unit needs processes such as retrieval or transfer of data requested from the large capacity external storage device.

The present invention has been made in view of these problems, and it is possible to easily retrieve unsaved voice data in an external storage device and transfer the retrieved voice data to the external storage device for storage. Provided is a voice recording device capable of performing.

[0010]

The present invention adopts the following means in order to solve the above problems.

A voice recording device for sequentially recording voice data generated by voice-compressing a call signal input via a communication line, the voice recording device comprising: a voice data recording area section for recording the voice data; A recording section having an index data recording area section for recording index data for managing the audio data, and a call file corresponding to the audio data each time new audio data is recorded in the audio data recording area section. A control unit that deletes and stores the call file each time a call file is generated and stored and is output based on a transfer request from the outside, and a data input that outputs the call file and voice data based on the transfer request from the outside. Equipped with an output section.

[0012]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram showing the configuration of a voice recording device 702 according to the embodiment of the present invention. As shown in the figure, the signal input unit 1 is the busy detection unit 1
01 and audio compression unit 102. Busy detection unit 10
1 detects the busy state by the presence or absence of a voice input voltage above a certain level in the communication line, and sends a detection signal to the device control unit 201 of the control unit 2. Audio compression unit 102
Performs audio compression coding processing on the input audio signal and outputs it as audio data. The output audio data is recorded in the audio data recording area section 401 of the recording section 4.

The control unit 2 includes a device control unit 201 and a generated file name storage unit 202. When the recording start button provided in the operation unit 3 is operated, the control unit 2 causes the audio data obtained by compression-encoding the input signal input to the signal input unit 1 to be recorded in the audio data recording area unit 401 of the recording unit 4. Control to record. Upon receiving the busy detection signal from the busy detection unit 101, the device control unit 201 controls the recording unit 4 to record the input signal as new voice data. In the generated file name storage unit 202, a call file name generated by the device control unit 201 when new voice data is recorded in the recording unit 4 is recorded.

The operation unit 3 is provided with operation buttons such as a recording start button and a recording stop button, and gives an instruction to start / stop recording an input signal.

The recording unit 4 is a recording device such as an HDD (Hard Disk Drive), and records an audio data recording area 401 for recording audio data and index data which is heading information for managing the audio data. An index recording area section 402 for performing the operation is provided. The recording unit 4
The input voice data and the index data generated in association with the voice data are recorded in the voice data recording area unit 401 and the index recording area unit 402, respectively.

The data input / output unit 5 is a data input / output control unit 5.
01, interface unit 502, address storage unit 50
3, a file name data conversion unit 504 and a voice data conversion unit 505. The interface unit 502 transmits a message from the voice data server 6 to a LAN (Local Area) described later.
a Network) 703. The data input / output control unit 501 also generates the generated file name storage unit 202 or the voice data recording area unit 4 according to the input electronic message.
The necessary information is extracted from 01, and the extracted information is stored in the file name data conversion unit 504 or the voice data conversion unit
Output to 05. The file name data conversion unit 504 or the voice data conversion unit 505 uses the extracted information as LA
Converted to data suitable for transmission via the N703,
The data is output to the voice data server 6 via the interface unit 502. The address storage unit 503 stores the address of the voice data server that has transmitted the message, and transmits the generated file name or voice data to this address. The voice data server is one or a plurality of servers including a personal computer having a large-capacity recording device, and collects index information and voice data recorded in the recording unit 4 and records and manages them for a long period of time. To do.

FIG. 2 is a diagram for explaining a recording / reproducing system equipped with the audio recording device 702. A call received via a communication line network such as a telephone is called a PBX (Private Branch eXchan
ge) 701 via a plurality of line terminal devices 705a, 70
5b or 705c. In addition, PBX7
The output of 01 is also connected to the voice recording device 702 as described above, and the call signal is voice-compressed and recorded.

The voice data server 6 is connected to a plurality of voice recording devices 702 via a LAN 703, and the LAN 70
The audio data recorded in the audio recording device 702 can be acquired via the S.

Next, the call recording operation of the voice recording device 702 will be described with reference to FIGS. 3 and 4. FIG. 3 is a flow chart for explaining the call recording operation, and FIG. 4 is a diagram showing changes in index data recorded by the call recording operation.

As shown in FIG. 4, the index data has five elements: a channel number to which a call signal is input, a management number for managing recorded voice data, a file name, a call start date and time, and a call end date and time. The index data is created every time the audio data is recorded.

The management number is a number for the control unit 2 to manage the recorded voice data, and is a unique number which does not overlap and is continuous in each voice data. Here, the management number is a six-digit number that starts from 000001 and is incremented by 1 each time voice data is recorded.

The file name is the voice data recording area section 40.
When the voice data 2 is recorded as a call file, it is generated and given by the control unit 2, and is a name that does not overlap in each call file like the management number. Here, the file name is composed of the channel number and the call start date and time. The call file name generated at this time is also stored in the generated file name storage unit 202. By using the call file name stored in the generated file name storage unit 202, the voice data server 6 can output desired voice data without the control of the control unit 2 as described later.
It is possible to acquire from 01.

In the flowchart shown in FIG. 3, first, after the power source of the voice recording device 702 is turned on, when the recording start button of the operation unit 3 is operated, the telephone call signal recording start standby state is set.

When a call is started at a certain line terminal device connected to the voice recording device 702, the busy detection unit 101 detects busy based on the input voice level (step Sl), and the device control unit 201 is notified. Output the detection signal. Device control unit 20
When the detection signal is input, the control unit 1 controls the recording unit 4 to record the audio data, which is input to the signal input unit 1 and is compressed, as new audio data in the audio data recording area unit 401. At this time, the device control unit 201 generates the call file name (for example, “cc_yyyymmddhhmm.wav” (where cc = channel number, yyyymmdd: call start date, hhmm: call start time), and records the generated call file name. Notify the unit 4 (step S2) Then, record the channel number of the channel that started recording, the management number, the call file name, the call start date and time, etc. in the index recording area unit 402 of the recording unit 4 as index data. The recording unit 4 is controlled (step S3).

Next, the busy detection unit 101 outputs a silence detection signal to the device control unit 201 when detecting the end of the call due to the disappearance of the voice signal voltage above a certain level (step S4). Upon receiving the silence detection signal, the device control unit 201 controls the recording / reproducing unit 4 to stop recording the input signal (step S5). Then, the recording unit 4 is controlled to record the index data of the call ending date and time in the index recording area unit 402 of the recording and reproducing unit 4 (step S6). Next, the device control unit 201 records the call file name corresponding to the voice data for which the call has ended in the generated file storage unit 202 (step S7).

As described above, FIG. 4 is a diagram showing changes in the index data recorded by the call recording operation. As shown in FIG.
Up to the call data of 004691 is recorded. After the recording, as shown in FIG. 4B, the management number 0000
This means that the call data from 4692 to the management number 00004696 has been additionally recorded.

Next, a call file name output operation of the voice recording device will be described with reference to FIGS. FIG. 5 is a flowchart for explaining a call file name output operation, and FIG. 6 is a diagram showing an example of a call file name output request message and an output response message. The call file name output request message includes a command data section 61 and a terminal address section 6 as shown in FIG.
It consists of two. The data of the command data section 61 is
This message is fixed data indicating that it is a call file name output request message, and the data in the terminal address section 62 is data representing the address of the line terminal device that transmitted this message.

The call file name output response message is shown in FIG. 6 (b).
As shown in, the command data portion 63 and the data number portion 64
And a variable length call file name data section 65. The data of the command data section 63 is fixed data indicating that this message is a call file name output response message, and the data of the data number section 64 is data indicating the number N of call file names transmitted by this message. . The call file name data section 65 is the call file name read from the generated file name storage section 202. In addition, FIG.
(C) is a figure which shows the specific example of a call file name output response message. In this example, referring to FIG. 4B, it is shown that the call file name regarding the voice data of the management numbers 0000462 to 00004696 is output.

In the flowchart shown in FIG. 5, when the interface unit 502 receives a call file name output request message from the voice data server 6 via the LAN (step S21), the received output request message is sent to the data input / output control unit 501. (Step S22). When the data input / output control unit 501 determines that the message is a call file name output request message based on the command data of the command data unit (S23), the address data of the terminal address unit 62 is stored in the address storage unit 503. (Step S24). The data input / output control unit 501 reads out all the call file names generated every time new voice data is recorded in the voice data recording area unit 401 and stored in the generated file name storage unit (step S25), and reads them. The call file name is transmitted to the data conversion unit 504 (step S26). At this time, the data input / output control unit 501 generates the read call file name from the generated file name storage unit 20.
It deletes from 2 (step S27). The file name data conversion unit 504 converts the received call file data into the call file name response message format shown in FIG. 6B (step S28), and the data input / output control unit 501 converts the converted call. The file name output response message is transmitted to the voice data server 6 having the address recorded in the address storage unit 503 via the interface unit 502 (step S29).

Next, the output operation of audio data by the audio recording device will be described with reference to FIGS. 7 and 8. FIG. 7 is a flowchart for explaining a voice data output operation, and FIG. 8 is a diagram showing an example of a voice data output request message and a voice data output response message. The voice data output request message is shown in Fig. 8 (a).
As shown in FIG. 7, it comprises a command data section 81, a terminal address section 82, and a designated file name section 83 representing the file name of the audio data to be output. The data in the command data section 81 is fixed data indicating that this message is a call file name output request message, and the data in the terminal address section 82 is data representing the address of the line terminal device that transmitted this message.

As shown in FIG. 8B, the voice data output response message includes a command data portion 84 and an output file name portion 8
5, a packet number portion 86, a data size portion 87, a fixed length voice data portion 88 and a data continuation identifier 89. The data in the command data section 84 is fixed data indicating that this message is a voice data output response message, and the data in the output file name section 85 is a file name representing the outputted voice data. The packet number part is data indicating the order of the divided audio data, the data size part 87 is data indicating the size of the audio data part 88, and the data continuation identifier 89 is data indicating the presence or absence of continuous audio data. Further, FIG. 8C is a diagram showing a specific example of the voice data output response message. In this example, referring to FIG. 4B, management number 00004692 and file name 0
2_200101041342. This shows that the voice data of wav is divided into two packets (telegrams) and output.

In the flowchart shown in FIG. 7, when the interface section 502 receives a telegram from the voice data server 6 via the LAN (step S41), the received telegram is input to the data input / output control section 501 (step S42). . When the data input / output control unit 501 determines from the data of the command data unit 81 of the electronic message that the electronic message is a voice data output request electronic message (step S43), the address data of the terminal address unit 82 of the electronic message is stored in the address storage unit. It is stored in 503 (step S44). The data input / output control unit 501 extracts the file name of the audio data to be output from the specified file name unit 83 of the electronic message (step S45), and transfers the audio data specified by the audio data recording area unit 401 to the audio data conversion unit 505. The output is controlled (step S46). Upon receiving the voice data, the voice data conversion unit 505 converts the voice data into a voice data output response message format shown in FIG. 8B. That is, since the length of the voice data differs for each call, if it cannot be accommodated in one telegram, the voice data is divided into a plurality of telegrams and output (step S47). The data input / output control unit 501 controls to output the voice data output response message to the voice data server 6 of the address stored in the address storage unit 503 via the interface 502.

Next, the operation of acquiring voice data by the voice data server will be described with reference to FIGS. 9 and 10. Figure 9
Is a flowchart for explaining the operation of acquiring voice data,
FIG. 10 is a diagram for explaining a database constructed in the voice data server.

As shown in FIG. 10, the voice data server 6
The database built on top of this is the device number of the voice recording device that recorded the voice data, the call file name, the channel number where the call signal was input, the call start date and time, and voice data acquisition that indicates whether or not the voice data has been acquired. It consists of five elements of the identifier, and these data are created every time the file name of the audio data is acquired. The voice data acquisition identifier is “0” when not acquired and “1” when acquired.
Further, the channel number and the call start date and time can be extracted from the naming rule of the acquired file name. Further, the voice recording device number for identifying the voice recording device 702 may have the same voice data management number when a plurality of voice recording devices 702 are connected to the voice data server 6, and the voice data in this case is It is necessary for identification.

In the flowchart shown in FIG. 9, the voice data server 6 issues a call file name output request message to the voice recording device 702 (step S61). After receiving the call file name output request message, the voice recording device 702a or 702b transmits the call file name output response message, and the voice data server 6 receives the message (step S62). The voice data server 6 extracts the channel number and the call start date and time from the received call file name (step S63), adds the voice recording device number to these data, and additionally registers them in the database (step S6).
4). At this time, all the voice data acquisition identifiers corresponding to the newly registered data are treated as unacquired (“0”). That is, as shown in FIG. 10A, the newly-acquired file (file name 2_200-010415)
03. WaV, 18_200101041505. Wa
V, 07_2001010441514. The voice data acquisition identifier of wav) is “0”.

After building the database, the voice data server 6
Searches the database to determine whether or not there is unacquired voice data (step S65), and if there is unacquired voice data, issues a voice data output request message to the voice recording device 702 to acquire the data ( Step S66). After receiving the voice data output request message, the voice recording device 702 transmits a voice data output response message including the requested voice data, and the voice data server 6 receives the voice data output response message (step S67). .

The voice data server 6 extracts the data of the voice data section 88 from the received voice data output response message (step S68). If it is divided into a plurality of electronic messages, the data of the audio data portion 88 extracted from each electronic message is combined to restore the audio data (step S6).
9) The restored voice data is recorded in the database in the voice data server (step S70). Next, the audio data acquisition identifier for the acquired audio data is set to "1".
It is changed to be acquired (step S71).

As a result, as shown in FIG.
Newly earned file (file name 2_200-0
1041503. WaV, 18_2001010415
05. WaV, 07_2001010441514. wa
The voice data acquisition identifier of v) is “1”.

As described above, according to this embodiment, the audio data recorded in the recording section of the audio recording device can be easily obtained from the externally connected audio data server. Further, the voice data server 6 obtains and refers to the call file name (the call file name corresponding to the unacquired voice data) stored in the generated file name storage unit 202, thereby performing the voice data recording control of the device control unit 201. Can asynchronously acquire unacquired voice data from the recording unit 4. Therefore, the audio data can be acquired without affecting the recording process of the device control unit 201.

[0040]

As described above, according to the present invention, it is possible to easily retrieve voice data that has not been stored in the external storage device and store the retrieved voice data in the external storage device.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an audio recording device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a recording / reproducing system.

FIG. 3 is a flowchart illustrating a call recording operation.

FIG. 4 is a diagram showing changes in index data recorded by a call recording operation.

FIG. 5 is a flowchart illustrating a call file name output operation.

FIG. 6 is a diagram showing an example of a call file name output request message and an output response message.

FIG. 7 is a flowchart illustrating an audio data output operation.

FIG. 8 is a diagram illustrating an example of a voice data output request message and a voice data output response message.

FIG. 9 is a flowchart illustrating a voice data acquisition operation.

FIG. 10 is a diagram illustrating a database constructed in a voice data server.

[Explanation of symbols]

1 Signal input section 2 control unit 3 operation part 4 recording section 5 Data input / output section 6 Voice data server 101 Busy detection section 102 voice compression unit 201 Equipment control unit 202 Generated file name storage section 401 audio data recording area section 402 Index data recording area 501 data input / output control unit 502 Interface section 503 address storage unit 504 File name data converter 505 Voice data converter 701 PBX 702 Audio recording device 705a, 705b, 705c Line terminal device

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Claims (2)

[Claims] 1. A voice recording device for sequentially recording voice data generated by voice-compressing a call signal input via a communication line, the voice recording device comprising a voice data recording area for recording the voice data. Section and a recording section having an index data recording area section for recording index data for managing the audio data, and a call corresponding to the audio data every time new audio data is recorded in the audio data recording area section. A control unit that generates and stores a file and deletes the storage of the call file each time the call file is output based on a transfer request from the outside, and the call file and voice data based on the transfer request from the outside. An audio recording device comprising a data input / output unit for outputting. 2. A voice recording device for sequentially recording voice data generated by compressing a voice signal input via a communication line, the voice recording device comprising a voice data recording area for recording the voice data. Section and an index data recording area section for recording index data for managing the audio data, and each time new audio data is recorded in the audio data recording area section, a call file corresponding to the audio data is generated. Each time the call file is output based on a transfer request from the outside, the storage of the call file is deleted, and the voice data corresponding to the output call file is output based on the request from the outside. A voice recording device characterized by.