JP2008053874A - Audio recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an audio recording and reproducing device that makes a person other than an administrator recognize that there is no speech communication contents and enables the administrator to reproduce apparently deleted audio data again by apparently deleting the audio data requested to be deleted at a request to delete the recorded audio data and then disabling the audio data to be carelessly reproduced. <P>SOLUTION: The audio recording and reproducing device includes: a discrimination unit which discriminates a signal indicating the request to delete an audio signal from an input signal; a first recording and reproducing unit which records and reproduces the audio signal as audio data; a second recording and reproducing unit which records and reproduces index information; a data conversion processing unit which converts the data format of the recorded audio data to a format other than that of the audio data and also preforms conversion into the original audio data; and a control unit. When the discrimination unit discriminates the signal indicating the request for deletion, the control unit makes control to record information indicating the request for deletion in the second recording and reproducing unit, and also to convert the recorded audio data into data in the format other than the format of the audio data. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an audio recording / reproducing apparatus for recording or reproducing an audio signal of a call input from a communication line such as a telephone line.

  Recorded for each call detected by means for detecting the start and end of a call for each line in a voice recording / reproducing apparatus that is connected to a plurality of telephone lines and encodes the voice signal of the incoming call and records it as voice data A configuration in which recording is performed on a device, date and time of a call, and input channel information are recorded as index information in association with audio data, and specific audio data is searched and reproduced based on the index information Is generally used as an audio recording / reproducing apparatus.

In order to detect the busy period from the start to the end of the call for each line, a level detection method that determines that the call is busy when the signal level of the input voice signal exceeds a certain threshold, or connection For example, there is a voltage detection system that determines whether or not the telephone is busy by a DC voltage of a line that changes depending on whether the telephone set is on-hook or off-hook. In general audio recording / reproducing apparatuses, the level detection method described above is often used.
The voice data recorded by such a voice recording / reproducing apparatus is generally recorded to provide evidence of a telephone call or as an example of a telephone call at a call center. It is possible to search and reproduce desired audio data from the recorded audio data by operating an operation unit of the audio recording / reproducing apparatus.

However, from the viewpoint of personal information protection in recent years, the contents of a call made between a company operator and a customer may become personal information. It has been demanded that the three parties cannot easily reproduce the contents of the call and that the recorded voice data is not leaked to the outside.
Also, at present, in order to protect personal information, when a company records the contents of a call made between an operator and a customer, there is a need to avoid recording the contents of the call according to the intention of the customer. .
Therefore, in a conventional voice recording / reproducing apparatus, when a specific DTMF (Dual Tone Multi Frequency) code for stopping recording of voice data is input by an operator's operation during a call, the call is recorded. There is one that can be canceled and audio data recorded so far can be deleted (for example, see Patent Document 1).

JP 2000-232535 A

  In the case of a voice recording / reproducing apparatus that records a call, it may not always be desirable to have a configuration in which the contents of a call can be easily deleted in consideration of the purpose of use as evidence that a call has been made. For example, when a business operator and a customer make a transaction through a telephone line call, the other party or another third party can call the content of the call, even though this call record must be recorded as evidence of the transaction. If the content of a specific signal for deleting is leaked to the outside, the content of the call to be recorded in the audio recording / reproducing apparatus may be deleted without permission. In this case, if the content of the call is deleted, the content of the call cannot be reproduced again, and the evidence of the transaction content disappears, and there is a possibility that a dispute over the transaction content will occur later. Therefore, when deletion of a call content is requested by a specific signal, even if the audio data is apparently deleted, in the unlikely event, the call content that should have been deleted can be restored and reproduced. It is desirable to do so. However, if the voice data requested to be deleted is apparently deleted, and the original voice data is left as it is, the voice data is deleted in the process of operating the voice recording / reproducing device. There is a possibility that the audio data that should have been reproduced may be erroneously reproduced, and a great deal of cost and labor will be spent on the management of such audio data.

  Also, when a voice recording / reproducing device is used in a company, usually, an administrator who manages the contents of a call recorded by the voice recording / reproducing device, and an employee such as a general operator other than the administrator respectively use the voice recording / reproducing device. Play back the recorded call contents. For example, when an employee reproduces the contents of a call, there is a case where the employee reproduces the contents of the call to listen again and confirm when performing a procedure based on the contents of the call recorded in the voice recording / reproducing apparatus. On the other hand, when the administrator plays the call contents, the recorded call contents that are no longer required to be recorded are deleted, or the call contents are backed up to another recording medium. In some cases, it may be played back to confirm the content of the call. As described above, in a company, it is common for an administrator who manages call contents and a general employee other than the administrator to reproduce the call contents recorded in the audio recording / reproducing apparatus according to their intended use. It is. In the conventional audio recording / reproducing apparatus, when an administrator and a person other than the administrator as described above reproduce and use the audio data recorded in the audio recording / reproducing apparatus, not only the administrator but also a person other than the administrator is used. Even if it exists, all the contents of the audio | voice data recorded by the display part are usually displayed. For this reason, for example, when a person other than the administrator knows the content of a specific signal for deleting the content of the call, it becomes possible to delete the recorded audio data displayed on the display unit, There is a risk of accidentally deleting the contents of a call recorded by a person other than the person.

  In the present invention, when there is a request to delete the voice data of the recorded call, the voice data requested to be deleted is apparently deleted and the voice data is not inadvertently reproduced. When the user operates, it is recognized that there is no call content that has been requested to be deleted, and when it is necessary to reproduce the audio data that is apparently deleted by the administrator, the audio data that is apparently deleted is reproduced again. An object of the present invention is to provide an audio recording / playback apparatus capable of performing the above.

  According to the first aspect of the present invention, in a voice recording / reproducing apparatus that records and reproduces a voice signal of a call input via a communication line as voice data, a call detection unit that detects the start and end of a call, and a voice signal A DTMF code detection unit for detecting a predetermined DTMF code from the DTMF code, and a determination for determining whether or not the DTMF code detected by the DTMF code detection unit includes a specific DTMF code indicating a voice signal deletion request And a first recording / reproducing unit that records or reproduces a voice signal of a call input from a communication line as voice data between a call start and a call end detected by the call detection unit; A second recording / reproducing unit that records or reproduces index information related to an audio signal recorded in the recording / reproducing unit; and a sound recorded in the first recording / reproducing unit A data conversion processing unit that converts the data format of the data into data of a format other than audio data, or converts the converted data into audio data; the first recording / reproducing unit; the second recording / reproducing unit; and the data A control unit that controls the conversion processing unit, and the control unit detects the second DTMF code when the determination unit detects a specific DTMF code indicating a deletion request after the call detection unit detects the start of a call. Information indicating a deletion request is recorded as index information to be recorded in the recording / reproducing unit, and the data conversion processing unit converts the audio data recorded in the first recording / reproducing unit into data of a format other than audio data. It is characterized by controlling.

  The invention according to claim 2 of the present application is the audio recording / reproducing apparatus according to claim 1, wherein an operation unit for inputting authentication information, authentication information indicating an administrator in advance, and authentication information indicating information other than the administrator are stored in advance. An information storage unit; and a comparison unit that compares and collates a plurality of authentication information stored in the authentication information storage unit and the authentication information input from the operation unit. If the authentication information input from the operation unit is verified to be authentication information indicating the administrator stored in the authentication information storage unit based on the result, the deletion request is sent to the second recording / reproducing unit. The index information recorded as information is controlled to be displayed on the display unit as a display indicating that a request for deleting an audio signal has been made, and the authentication information input from the operation unit is the authentication information storage means If it collated with the authentication information indicating other than the storage administrators, and controlling so as not to display the in-down index information recorded as information indicating the deletion request to the second recording and reproducing unit.

  According to the voice recording / reproducing apparatus of the present invention, when there is a request to delete the voice data of the recorded call, the voice data requested to be deleted is apparently deleted and the voice data is not played back carelessly. Therefore, when a person other than the administrator operates, it is recognized that there is no content of the call that has been requested to be deleted, and when the administrator needs to reproduce the audio data that is apparently deleted, this apparent It is possible to provide a voice recording / playback apparatus that can play back the deleted voice data again.

  Embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is used about the part same as the component shown by the prior art.

FIG. 1 is a block diagram showing a configuration of an audio recording / reproducing apparatus according to an embodiment of the present invention.
The audio recording / reproducing apparatus of the present embodiment includes a signal input unit 1, a control unit 2, an operation unit 3, an audio output unit 4, a recording / reproducing unit 5, an ID data management unit 6, a display unit 7, and a data conversion processing unit 8. .

The signal input unit 1 includes a call detection unit 101, a voice compression unit 102, and a DTMF code detection unit 103.
The call detection unit 101 detects whether or not a call is in progress based on the presence or absence of a voice input voltage of a certain level or higher on the communication line, and outputs a detection signal indicating that the call is in progress to the device control unit 201. The audio compression unit 102 performs audio compression encoding processing on the input audio signal and outputs it as audio data. The audio data output from the audio compression unit 102 is recorded in the audio data recording area unit 501 of the recording / reproducing unit 5 as audio data. A plurality of signal input units 1 are provided in the audio recording / reproducing apparatus, and each is assigned with an individual channel number for identification. The DTMF code detection unit 103 detects a DTMF code from the input signal and outputs the detected DTMF code to the determination unit 202.

  The recording / reproducing unit 5 includes a recording medium such as an HD (Hard Disk), and records an audio data recording area unit 501 for recording audio data and index data which is heading information for managing the audio data. The index recording area unit 502 is provided. The recording / reproducing unit 5 records the input audio data in the audio data recording area unit 501 or reproduces the audio data recorded in the audio data recording area unit 501 under the control of the control unit 2. The recording / playback unit 5 records index data related to the audio data to be recorded in the audio data recording area unit 501 in the index recording area unit 502 or outputs the index data recorded in the index recording area unit 502.

  The control unit 2 includes a device control unit 201, a determination unit 202, a search condition comparison unit 203, an ID data comparison unit 204, and a built-in clock 205. When a recording start button (not shown) provided in the operation unit 3 is operated, the control unit 2 records the audio data compressed and encoded by the audio compression unit 102 in the audio data recording area unit 501 of the recording / reproducing unit 5. Control as follows. When the detection signal indicating that the call detection unit 10 is in a call is output, the device control unit 201 controls the recording / reproducing unit 5 to record the audio data input as new audio data. The built-in clock 205 is based on the detection signal of the call detection unit 101 and is used as a reference when recording the date and time when the device control unit 201 starts or ends recording of audio data as index data in the index recording area unit 502. It will be.

  When the DTMF code is input from the DTMF code detection unit 103 while recording the audio data, the determination unit 202 determines whether the input DTMF code is a specific DTMF code indicating a request to delete the audio data. And outputs a signal of the determination result to the device control unit 201. When a determination result signal indicating that a specific DTMF code indicating a voice data deletion request has been input is output from the determination unit 202, the device control unit 201 adds to the sound data recorded in the index recording area unit 502. Control is performed to change the value of the deletion request status of the corresponding index recording area 502. When a search button (not shown) provided in the operation unit 3 is operated, the device control unit 201 controls the display unit 7 to display a message requesting input of a login ID and a password for confirming the operation authority. .

The ID data management unit 6 includes a data input / output control unit 601 and an ID data storage unit 602.
The data input / output control unit 601 reads ID data and password data stored in the ID data storage unit 602 under the control of the device control unit 201, and performs control such as recording of new ID data and password data. The ID data storage unit 602 stores a log ID and password data input from the operation unit 3 and a data set of assigned channel numbers.

  In the audio recording / reproducing apparatus of the present embodiment, ID data, password data, and assigned channel number data are set in advance. Further, the assigned channel number is, for example, that the assigned channel number is “1” in the data set of the login ID given to the operator in charge of the channel of channel number 1. In the case of a manager who is not directly in charge of answering a telephone call on the line, the assigned channel number is “MGR”.

  The ID data comparison unit 204 checks whether or not the login ID and password input from the operation unit 3 match the login ID and password stored in the ID data storage unit 602, and indicates a comparison result Is output to the device control unit 201.

  The device control unit 201 receives a signal indicating a comparison result from the ID data comparison unit 204, and the login ID and password input from the operation unit 3 are stored in the ID data storage unit 602. If it matches any of them, the display unit 7 is controlled to display a message prompting the user to input a search condition. The search condition input from the operation unit 3 is input to the search condition comparison unit 203 under the control of the device control unit 201. The search condition comparison unit 203 compares the index data recorded in the index recording area unit 502 with the search condition input from the operation unit 3 and outputs a signal indicating the comparison result to the device control unit 201. When the device control unit 201 receives a signal indicating the comparison result from the search condition comparison unit 203 and recognizes that the search condition matches, the device control unit 201 displays a display indicating that there is audio data that matches the search condition on the display unit 7, At the same time, the audio data recorded in the audio data recording area 501 of the recording / reproducing unit 5 is read out and controlled to be output to the audio output unit 4.

  The operation unit 3 includes operation buttons such as a recording start button, a recording stop button, a voice data search / playback button, a numeric keypad for inputting a login ID and a password, and the like. The search / playback instruction is issued.

The audio output unit 4 includes an audio expansion unit 401, an audio amplification unit 402, and a speaker 403.
The audio expansion unit 401 performs audio expansion processing on the compressed audio data recorded in the audio data recording area unit 501 of the recording / playback unit 5, performs analog conversion, and outputs the result to the audio amplification unit 402. The audio amplifying unit 402 amplifies the input audio signal and outputs the audio signal from the speaker 403 to the outside.

  The display unit 7 displays the information recorded in the recording / reproducing unit 5, for example, the date and time when the recording of the audio data being reproduced is started and the channel number under the control of the control unit 2. The search condition when the search operation is performed is displayed.

  The data conversion processing unit 8 converts the audio data recorded in the audio data recording area unit 501 into data that is not recognized as audio data under the control of the device control unit 201. As for the data conversion method, for example, a data conversion method as disclosed in Japanese Patent Laid-Open No. 2000-106554 is used to convert the data into data different from the audio data. In the audio recording / reproducing apparatus of this embodiment, as a data conversion method, the audio data is different from the audio data by XOR (exclusive OR) with a specific bit string, for example, a bit string of “01010101” in units of 8 bits. Shall be converted to

  Further, the data conversion processing unit 8 converts the data converted into data different from the audio data by the above-described method into the original audio data under the control of the device control unit 201. Also for this data conversion method, for example, a data conversion method as disclosed in Japanese Patent Laid-Open No. 2000-106554 is used to convert data converted to data different from audio data into original audio data.

FIG. 2 is a diagram showing an example of a voice recording system for a call provided with the voice recording / reproducing apparatus of the present embodiment.
In FIG. 2, reference numerals 902 and 903 denote voice recording / reproducing apparatuses of the present embodiment, 9 denotes a telephone line, 901 denotes a PBX (Private Branch exchange), and 904a, 904b, and 904c denote line terminals. A call signal received via the telephone line 9 is connected to one of the line terminals (line terminals 904a, 904b, 904c) by the PBX 901. The voice recording / reproducing apparatus of this embodiment is connected between the PBX 901 and these line terminals, and receives and records an incoming call signal.

  FIG. 3 is a diagram showing the contents of the index data recorded in the index recording area 502. FIGS. 3 (a) to 3 (d) are recorded by the call recording operation of the audio recording / reproducing apparatus of this embodiment to be described later. It is a figure which shows the process of the change of index data.

The index data is composed of six elements: the channel number to which the voice signal of the call is input, the management number for managing the recorded voice data, the file name, the voice start date / time, the voice end date / time, and the deletion request status. Each time audio data is recorded, this index data is created.
The management number is a number for the control unit 2 to manage the audio data recorded in the audio data recording area unit 501. In this embodiment, the management number is represented by an 8-digit number, and the management number is incremented by 1 each time a call signal is recorded. The channel number is the channel number of the signal input unit 1 to which the call signal is input. The file name is the file name of the voice signal of the call recorded in the voice data recording area 501. In this embodiment, the file name is represented by “cc_yyyymmddhhmm.wav”. Here, “cc” of the file name indicates the channel number described above, “yyyymmdd” indicates the recording date, “hhmm” indicates the recording start time, and “.wav” indicates the extension.

  The voice start date and time is the date and time when recording of the voice signal of the call is started in the voice data recording area 501. In this embodiment, date / time information is acquired from the built-in clock 205. The voice end date and time is the date and time when recording of the voice signal of the call is finished in the voice data recording area unit 501, and the date and time information is acquired from the built-in clock 205.

  The deletion request status is information for identifying whether the recorded audio data has received a deletion request and has been subjected to data conversion processing. In the present embodiment, “0x00000000” indicates that the device control unit 201 has not received a deletion request, and “0x00000001” indicates that the device control unit 201 has received a deletion request. A state in which the audio data recorded in the recording area unit 501 is converted by the data conversion processing unit 8 is defined as “0x10000001”.

Next, the call recording operation of the audio recording / reproducing apparatus of the present embodiment will be described.
FIG. 4 is a flowchart for explaining the call recording operation of the audio recording / reproducing apparatus of the present embodiment.

After the recording start button of the operation unit 3 is operated, the call detection unit 101 detects the presence or absence of the start of the call according to the input level of the voltage signal input from the telephone line (step S1).
When the call detection unit 101 detects the start of a call, the call detection unit 101 outputs a detection signal indicating the start of the call to the device control unit 201. When the detection signal indicating the start of a call is input, the device control unit 201 records the audio data input to the signal input unit 1 and compressed by the audio compression unit 102 in the audio data recording area unit 501 of the recording / reproducing unit 5. The recording / reproducing unit 5 is controlled (step S2). At this time, the device control unit 201 controls the recording / reproducing unit 5 so as to record the channel number, audio start date / time, deletion request status, etc. of recording as index data in the index recording area unit 502 of the recording / reproducing unit 5 ( Step S3). At this time, the deletion request status recorded in the index recording area unit 502 is “0x00000000 (no deletion request)”.

  The call detecting unit 101 detects whether or not the call has ended according to the level of the audio signal input from the telephone line (step S4). Until the call ends, the device control unit 201 monitors whether or not the determination unit 202 has determined a DTMF code indicating a voice data deletion request from the DTMF code input to the DTMF code detection unit 103 (step). S5). When the determination unit 202 determines a DTMF signal indicating a voice data deletion request from the signal input to the DTMF code detection unit 103, the device control unit 201 sets the deletion request status recorded in the index recording area unit 502 to “0x00000001”. It is controlled to change to “(deletion requested)” (step S6).

  In step S4, when the call detecting unit 101 detects the end of the call, the device control unit 201 controls the recording / reproducing unit 5 to stop recording the audio data (step S7). Further, the device control unit 201 controls the recording / reproducing unit 5 to record the index data of the audio end date / time in the index recording area unit 502 of the recording / reproducing unit 5 (step S8).

The device control unit 201 refers to the deletion request status recorded in the index recording area unit 502 (step S9), and determines whether or not the deletion request status is “0x00000001 (with deletion request)” (step S10). .
When the deletion request status is “0x00000001 (with deletion request)”, the device control unit 201 converts the voice data of the call recorded in the voice data recording area unit 501 into data after the data conversion processing unit 8 performs data conversion processing. The recording / reproducing unit 5 is overwritten on the recording area unit 501 (step S11), and the recording / reproducing unit 5 is controlled so as to update the deletion request status of the index recording area unit 502 from “0x00000001 (with a deletion request)” (Step S12), and the operation ends.

  FIGS. 3A to 3D are diagrams showing the process of changing the index data described in FIG. 4, and FIG. 3A shows the audio data up to the management number 00004691 in the recording / playback unit 5 before the start of recording. 3 (b) shows a state in which recording of the audio data of management number 00004692 is started after recording is started, and FIG. 3 (c) shows a request for deleting the audio data of management number 00004692. FIG. 3 (d) shows a state in which recording of audio data up to the management number 00004697 is completed, and then a deletion request is received for the audio data of the management number 00004692 and the management number 00004695. The state in which the audio data of the number 00004692 and the management number 00004695 is converted into data different from the audio data It is to figure.

  Before the start of recording, the audio data of management number 00004690 and management number 00004691 has already been recorded, and since deletion of these data has not been requested, the deletion request status is an index indicating 0x00000000 (no deletion request). Data is recorded in the index recording area 502. When new recording is started from the state of FIG. 3A, recording of audio data of management number 00004692 is started as shown in FIG. 3B. When there is a request to delete voice data with management number 00004692 from the state of FIG. 3B, the deletion request status of voice data with management number 00004692 is updated to 0x00000001 (with a deletion request) as shown in FIG. 3C. To do. When voice data is newly recorded from management number 00004694 to management number 00004697 from the state of FIG. 3 (c), and after these recordings are completed, a deletion request is received for the voice data of management number 00004692 and management number 00004695. As shown in FIG. 3D, the data conversion processing unit 8 converts the audio data of the management number 00004692 and the management number 00004695 into data different from the audio data, and the deletion request status is “0x10000001 (data conversion processing). ”).”

Next, the audio data search / playback operation of the audio recording / playback apparatus of this embodiment will be described.
First, a case where a manager (login ID: MGRa) as an administrator performs a search / playback operation of audio data recorded in the recording / playback unit 5 will be described with reference to FIGS. 5, 7, and 8 (a).

FIG. 5 is a flowchart for explaining the search / playback operation of the audio data recorded by the manager (login ID: MGRa) as the administrator in the recording / playback unit 5.
FIG. 7 is a diagram showing ID data, password data, and assigned channel number data stored in advance in the ID data storage unit 602.
FIG. 8 is a diagram showing the display contents of the display unit 7. FIG. 8A shows the audio data of management number 00004690 to management number 00004697 as shown in FIG. 4D, and management number 00004692. When the voice data of the number 00004695 is converted into data different from the voice data and the deletion request status is “0x10000001 (data conversion process completed)”, the manager (login ID: MGRa) as the administrator It is a figure which shows the display content of the display part 7 after performing the search operation of audio | voice data. The description of FIG. 8B will be described later.

  In the case of performing search / playback operation of the voice data recorded in the recording / playback unit 5, as shown in FIG. 4D, the voice data of the management number 00004690 to the management number 00004697 is recorded, and the management number 00004692 and the management number are recorded. A case will be described in which the sound data of 00004695 is converted into data different from the sound data, and the deletion request status is “0x10000001 (data conversion process completed)”.

  As shown in FIG. 5, when the voice data search / playback button of the operation unit 3 is operated (step S41), the device control unit 201 controls the display unit 7 to perform a display requesting input of a login ID and a password. (Step S42). The device control unit 201 monitors whether or not a login ID and a password have been input by the operation of the operation unit 3 (step S43). For example, by the operation of the operation unit 3, “MGRa” as the login ID and “4321 as the password. ", The device control unit 201 searches the ID data recorded in the ID data storage unit 602 for data whose login ID is" MGRa ", and the login ID and password input in step S43. Are compared (step S44). Then, it is determined whether or not the login ID and the password match (step S45). If the login ID and the password match, a message prompting the input of the search condition is displayed on the display unit 7 (step S46).

  Subsequently, when the operation of the operation unit 3 is performed to search for audio data based on search conditions such as a channel number and audio start date and time (step S47), the device control unit 201 reads index data from the index recording area unit 502. Reading (step S48) and comparing whether or not the search condition is met (step S49), it is determined whether or not the matched voice data exists in the voice data recording area 501 (step S50). Here, when the matched audio data exists in the audio data recording area unit 501, the device control unit 201 displays information such as the audio start date and time, the channel number, among the index data recorded in the index recording area unit 502. The display unit 7 is controlled to do so (step S51).

  At this time, the audio data whose index data deletion request status is “0x00000001 (with deletion request)” or “0x10000001 (data conversion processed)” has been deleted on the display unit 7 as shown in FIG. Explicitly indicate “Deleted” to indicate

  When any audio data is selected from the audio data displayed on the display unit 7 by the operation of the operation unit 3 and a reproduction operation is performed (step S52), the device control unit 201 records in the index recording area unit 502 The deletion request status of the index data of the audio data being referred to is referred to (step S53).

  Here, the device control unit 201 determines whether or not the deletion request status of the index data of the audio data recorded in the index recording area unit 502 is “0x00000000 (no deletion request)” (step S54). If the selected audio data is audio data stored in the index data as “0x00000000 (no deletion request)”, the audio data is read from the audio data recording area 501 based on the file name indicated by the index data. (Step S57), the read audio data is output to the audio output unit 4 (Step S58).

  If the selected audio data is “0x00000001 (with a deletion request)” or “0x10000001 (data conversion process completed)”, the display unit 7 displays that the audio data has been deleted (step S56). Quit without playing audio data.

  Thereafter, as shown in FIG. 8A, the administrator selects the audio data that is displayed indicating that the audio data has been deleted from the audio data information displayed on the display unit 7. When a re-conversion button (not shown) provided in the operation unit 3 is operated, the data conversion processing unit 8 converts the data converted into data different from the audio data into the original audio data. The device control unit 201 sets the deletion request status of index data corresponding to the data converted into the original audio data by the data conversion processing unit 8 among the index data recorded in the index recording area unit 502 to “0x10000001”. It is controlled to update from “(data conversion process completed)” to “0x00000000 (no deletion request)”.

  Next, with reference to FIGS. 6, 7, and 8 (b), an operator other than the manager whose assigned channel number is “MGR” performs a search / playback operation of audio data recorded in the recording / playback unit 5. explain.

FIG. 6 is a flow chart for explaining the search / playback operation of the audio data recorded in the recording / playback unit 5 by the operator (login ID: bbbb) who is in charge of channel number 2 who is an operator other than the administrator.
FIG. 7 is a diagram showing ID data, password data, and assigned channel number data stored in advance in the ID data storage unit 602.
In FIG. 8B, the audio data of management number 00004690 to management number 00004697 is recorded as shown in FIG. 4D, and the audio data of management number 00004692 and management number 00004695 is converted into data different from the audio data. FIG. 10 is a diagram showing the display content of the display unit 7 after an operator other than the administrator performs a voice data search operation when these deletion request statuses are “0x10000001 (data conversion processed)”.

  In the case of performing search / playback operation of the voice data recorded in the recording / playback unit 5, as shown in FIG. 4D, the voice data of the management number 00004690 to the management number 00004697 is recorded, and the management number 00004692 and the management number are recorded. A case will be described in which the sound data of 00004695 is converted into data different from the sound data, and the deletion request status is “0x10000001 (data conversion process completed)”.

  As shown in FIG. 6, when the voice data search / playback button of the operation unit 3 is operated (step S61), the device control unit 201 controls the display unit 7 to perform a display requesting input of a login ID and a password. (Step S62). The device control unit 201 monitors whether or not a login ID and a password are input by the operation of the operation unit 3 (step S63). For example, by operation of the operation unit 3, “bbbb” is set as the login ID and “2345” is set as the password. ", The device control unit 201 searches the ID data recorded in the ID data storage unit 602 for data whose login ID is" bbbb ", and the login ID and password input in step S43. Are compared (step S64). Then, it is determined whether or not the login ID and the password match (step S65). If the login ID and the password match, a message prompting input of search conditions is displayed on the display unit 7 (step S66).

  Subsequently, when the operation of the operation unit 3 is performed to search for audio data according to a search condition such as a channel number or audio start date and time (step S67), the device control unit 201 reads index data from the index recording area unit 502. Read (step S68). The device control unit 201 refers to the assigned channel number stored in the ID data storage unit 602 (step S69), and the index data read in step S68 for the index data related to the assigned channel number corresponds to the search condition. Are compared (step S70). In this embodiment, when the assigned channel number is 2, the index data deletion request status of “0x00000001 (with deletion request)” or “0x10000001 (data conversion processed)” is not set as a search target. And

  Next, it is determined whether or not the matched audio data exists in the audio data recording area 501 (step S71). Here, when the matched audio data exists in the audio data recording area unit 501, the device control unit 201 displays information such as the audio start date and time, the channel number, among the index data recorded in the index recording area unit 502. The display unit 7 is controlled to do so (step S72). At this time, the audio data whose index data deletion request status is “0x00000001 (with a deletion request)” or “0x10000001 (data conversion processing completed)” is excluded from the search target by the processing described in step S70. As shown in (b), it is not displayed on the display unit 7.

  When any audio data is selected from the audio data displayed on the display unit 7 by the operation of the operation unit 3 and a reproduction operation is performed (step S73), the device control unit 201 records in the index recording area unit 502. The deletion request status of the index data of the audio data is referred to (step S74).

  Here, the device control unit 201 determines whether or not the deletion request status of the index data of the audio data recorded in the index recording area unit 502 is “0x00000000 (no deletion request)” (step S75). If the selected audio data is audio data stored in the index data as “0x00000000 (no deletion request)”, the audio data is read from the audio data recording area 501 based on the file name indicated by the index data. (Step S76), the read audio data is output to the audio output unit 4 (step S77).

  As described above, in the audio recording / reproducing apparatus according to the present embodiment, when there is a request for deletion of the call contents for the audio data recorded in the recording / reproducing unit 5, the audio data requested for deletion is different from the audio data. When the data is converted into data and a person other than the administrator performs a search operation on the recorded voice data, the voice data requested to be deleted is not displayed on the display unit 7. As a result, when a person other than the administrator operates the operation unit 3 to display the audio data recorded in the audio data recording area unit 501 on the display unit 7, the content of the call requested to be deleted is recorded in the recording / reproducing unit 5. Can be recognized by a person other than the administrator as not recorded. As a result, even if a person other than the administrator knows the content of a specific signal for deleting the call content, the voice data requested to be deleted is not displayed on the display unit. It is possible to prevent the recorded call contents from being deleted.

  In addition, when there is a request to delete the content of the call, the audio recording / reproducing apparatus of the present embodiment converts the audio data that has been requested to be deleted into data different from the audio data. In the process of operation, it is possible to prevent erroneous reproduction of audio data that should have been erased.

  Further, the audio recording / reproducing apparatus of the present embodiment is provided in the operation unit 3 with respect to data displayed as deleted data on the display unit 7 when reproduction of audio data requested by the administrator is required. By operating the re-convert button, data that has been converted to data different from the audio data can be converted back to the original audio data, so the administrator can play back the audio data that was requested to be deleted again. can do.

The block diagram which shows the structure of the audio | voice recording / reproducing apparatus which is one Example of this invention. The figure which shows an example of the audio | voice recording system of the telephone provided with the audio | voice recording / reproducing apparatus of a present Example. The figure which shows the content of the index data recorded on the index recording area | region part 502. FIG. The flowchart figure explaining the call recording operation | movement of the audio | voice recording / reproducing apparatus of a present Example. The flowchart figure explaining search reproduction | regeneration operation | movement of the audio | voice data recorded on the recording / reproducing part 5 by the manager (login ID: MGRa) which is an administrator. FIG. 6 is a flowchart for explaining a search / playback operation of voice data recorded in the recording / playback unit 5 by an operator (login ID: bbbb) who is in charge of channel number 2 who is an operator other than the administrator. The figure which shows the data of ID data, the password data, and the charge channel number which are beforehand memorize | stored in the ID data storage part 602. FIG. 8A is a diagram showing the contents displayed on the display unit after the voice data search operation of the voice recording / reproducing apparatus of the present embodiment. FIG. 8A shows a manager (login ID: MGRa) that is an administrator searches for voice data. The figure which shows the display content of the display part 7 after operation | movement, FIG.8 (b) is a figure which shows the display content of the display part 7 after operator other than an administrator searches voice data.

Explanation of symbols

1 signal input unit, 2 control unit,
3 Operation unit, 4 Audio output unit,
5 recording / playback unit, 6 ID data management unit,
7 display section, 8 data conversion processing section,
9 Telephone line,
101 call detection unit, 102 voice compression unit,
103 DTMF code detector,
201 device control unit, 202 discrimination unit,
203 search condition comparison unit, 204 ID data comparison unit,
205 Built-in clock,
401 voice decompression unit, 402 voice amplification unit,
403 speaker,
501 audio data recording area, 502 index recording area,
601 data input / output control unit, 602 ID data storage unit,
901 PBX, 902 903 voice recording / playback device,
904a 904b 904c Line terminal

Claims (2)

In a voice recording / reproducing apparatus for recording / reproducing a voice signal of a telephone call inputted through a communication line as voice data,
A call detector for detecting the start and end of a call;
A DTMF code detector that detects a predetermined DTMF code from the audio signal;
A determination unit for determining whether or not the DTMF code detected by the DTMF code detection unit includes a specific DTMF code indicating an audio signal deletion request;
A first recording / reproducing unit that records or reproduces a voice signal of a call input from a communication line as voice data between a call start and a call end detected by the call detection unit;
A second recording / reproducing unit that records or reproduces index information related to an audio signal recorded in the first recording / reproducing unit;
A data conversion processing unit that converts the data format of the audio data recorded in the first recording / reproducing unit into data of a format other than audio data, or converts the converted data into audio data;
A controller for controlling the first recording / reproducing unit, the second recording / reproducing unit, and the data conversion processing unit;
The control unit, when the call detection unit detects the start of a call and when the determination unit detects a specific DTMF code indicating a deletion request, issues a deletion request as index information to be recorded in the second recording / reproducing unit. The audio recording / reproducing apparatus is characterized in that the data conversion processing unit controls the audio data recorded in the first recording / reproducing unit to be converted into data of a format other than audio data. The audio recording / reproducing apparatus according to claim 1.
An operation unit for inputting authentication information;
Authentication information storage means for storing authentication information indicating an administrator and authentication information indicating other than the administrator in advance,
A comparison unit that compares and compares a plurality of authentication information stored in the authentication information storage unit and the authentication information input from the operation unit;
When the control unit collates that the authentication information input from the operation unit is authentication information indicating an administrator stored in the authentication information storage unit based on a result of the comparison and collation by the comparison unit, The index information recorded as information indicating the deletion request in the second recording / playback unit is controlled to be displayed on the display unit as a display indicating that the audio signal deletion request has been requested, and input from the operation unit When the authentication information is verified to be authentication information other than the administrator stored in the authentication information storage means, the index information recorded as information indicating the deletion request is not displayed on the second recording / reproducing unit. It is characterized by controlling.

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