JP2003110692A - Voice recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a voice recording and reproducing device capable of easily identifying a removable medium on which desired speech data are recorded. SOLUTION: The voice recoding and reproducing device is provided with, a first recording and reproducing section 5 for recording voice data received form a communication channel and index data related to the voice data, a second recording and reproducing section 7 for recording information to identify the voice data and index data recorded in the first recording and reproducing section 5 and the removable medium to the removable medium, and a voice data information recording section 8 for recording the index data recorded in the removable medium and the medium management information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio recording / reproducing apparatus, and more particularly to an audio recording / reproducing apparatus for recording and reproducing audio information transmitted / received via a communication line such as a telephone.

[0002]

2. Description of the Related Art There is known a voice recording / reproducing apparatus which is connected to a plurality of telephone lines, encodes voice signals of telephone calls inputted to each line, records the voice data as voice data, and further reads and reproduces the recorded voice data. ing. This device detects the start and end of a call for each line by a call detection device. For the line in which the call is detected, the date and time of the call and the input channel information are associated with the voice data of the line and recorded as index data. At the time of reproduction, it is possible to retrieve and reproduce call data including the voice data and the like based on the index data.

In order to detect the busy period from the start to the end of the call for each line, a level detection system for judging the busy state when the signal level of the input voice signal exceeds a certain threshold value. Alternatively, there is a voltage detection method that judges by the DC voltage of the line that changes depending on the state of the connected telephone (on-hook state or off-hook state).

Since a recording medium (hard disk or the like) for recording the call data has a finite capacity, when the call data is stored for a long period of time, the call data recorded on the recording medium is stored in a DAT (Digital Audio Tape) or the like. It is common to record and save it on a removable medium (see Japanese Patent Laid-Open No. 7-307788).

Further, a label or the like indicating the date and time when the call data is recorded is attached to the removable medium for use in searching the call data.

[0006]

As described above, if the removable medium is attached with a label recording the date and time when the call data is recorded and the date and time when the desired call data to be searched is recorded, By viewing the label, it is possible to identify the removable medium in which the desired call data is recorded. But,
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. If you want to retrieve the call data of a specific person code, you have to play and check the removable media one by one.

The present invention has been made in view of these problems, and provides a voice recording / reproducing apparatus capable of easily specifying a removable medium in which desired call data is recorded.

[0009]

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

A first recording / reproducing unit for recording audio data input from a communication line and index data related to the audio data, and audio data and index data recorded in the first recording / reproducing unit and a removable medium are recorded. A second recording / reproducing unit for recording information for identification on the removable medium and an audio data information recording unit for recording index data and media management information recorded on the removable medium are provided.

[0011]

1 is a diagram showing an audio recording / reproducing apparatus according to an embodiment of the present invention. In the figure, the signal input unit 1 includes a busy detection unit 101 and a voice compression unit 102. The busy detection unit 101 sends a busy detection signal to the device control unit 201 when detecting that there is a voice input above a certain level on the communication line. The voice compression unit 102 compresses and encodes the input voice signal and outputs it.

The control unit 2 includes a device control unit 201 and a storage unit 20.
2 and a search condition comparison unit 203. The control unit 2
When the recording start button provided on the operation unit 3 is operated,
The audio signal input to the signal input unit 1 is compression-encoded, and the compression-encoded audio data is recorded in the audio data recording area unit 501 of the recording / reproducing unit 5.

In addition, the device control section 201 has a busy detection section 10
When the new busy detection signal is received from 1, the recording / reproducing unit 5 is controlled to record the input audio signal as new audio data. In addition, when the backup start button provided in the operation unit 3 is operated, the device control unit 201 changes the audio data recorded in the audio data recording area unit 501 of the recording / reproducing unit 4 into the audio data of the removable media recording / reproducing unit 7. Control is performed to record the backup data in the recording area unit 701. At this time, the storage unit 202 records a unique media management number given to each removable medium under the control of the device control unit 201.

When the search button provided in the operation section 3 is operated, the device control section 201 controls the index recording area section 502 of the recording / reproducing section 5 or the index recording area 702 of the removable media recording section 7. ,
Search condition comparison unit 2 for the recorded index data
Enter in 03. The search condition comparison unit 203 compares the input index data with the search condition input from the operation unit 3, and outputs a signal of the comparison result to the device control unit 201. The device control unit 201 determines whether or not there is voice data that matches the search condition based on the signal of the comparison result that is input from the search condition comparison unit 203. If there is voice data that matches the search condition, the display unit indicates that fact. Display in 6. At the same time, the audio data recorded in the audio data recording area section 501 of the recording / reproducing section 5 or the audio data recording area section 701 of the removable media recording / reproducing section 7 is read out and output to the audio output section 4.

The operation unit 3 is provided with operation buttons such as a recording start button, a recording stop button, a backup start button, a backup stop button, a reproduction start button, a reproduction stop button, a search condition input button, and a search button. It is possible to instruct start / stop of recording, start / stop of backup of recorded voice data, input of search conditions, start of search, and reproduction / stop reproduction of searched call data.

The audio output unit 4 comprises an audio expansion unit 401, an audio amplification unit 402 and a speaker 403. The audio decompression unit 401 is used for the audio data recording area unit 50 of the recording / playback unit 5.
1 or decompresses the compressed audio data recorded in the audio data storage area 702 of the removable media recording / reproducing unit 7, and further performs analog conversion,
It is output to the voice amplifier 402. The audio amplification unit 402 amplifies the input audio signal and outputs it to the outside through the speaker 403.

The recording / reproducing unit 5 is an HDD (Hard Disk Drive).
A recording device such as e), in which a recording area of a recording medium in the recording device is recorded with an audio data recording area portion 501 for recording audio data and index data which is heading information for managing the audio data. The index recording area section 502 is divided. The control unit 2 performs recording and reproduction processing of the input audio data and index data using the respective divided areas.

The display unit 6 displays the search conditions and the search results input by the operation buttons of the operation unit 3 under the control of the control unit 2.

The removable media recording / reproducing unit 7
A recording area in a removable medium such as an AT is divided into three parts: an audio data recording area part 701 for recording audio data, an index recording area part 702 for recording index data, and a media management information recording part 703. . The audio data and the index data recorded in the recording / reproducing unit 5 are recorded as backup data in the audio data storage area 701 and the index recording area 702 of the removable medium, and the media management information recording unit 703 manages the removable medium. Record a unique control number for.

In the voice data information recording unit 8, the index data including the management number relating to the call data backed up in the removable media recording / reproducing unit 7 and the media management number of the removable medium are controlled by the control unit 2 as described later. Are recorded in association with each other.

Next, the call recording operation of the voice recording / reproducing apparatus of this embodiment will be described with reference to FIGS.

FIG. 2 is a flow chart for explaining a call recording operation of the voice recording / reproducing apparatus. FIG. 3 is a diagram showing changes in index data updated by a call recording operation, and FIG. 3A shows index data before updating and FIG. 3B shows index data after updating.

As shown in FIG. 3, the index data is the channel number into which the voice signal of the call is input, the management number for managing the recorded call data, the call start date and time,
It consists of information indicating the date and time when the call ended and whether or not the backup was made to a removable medium. Therefore, the index data is newly created every time the call data is recorded.

The management number is a number for managing the recorded call data, is a unique number that does not overlap in each call data, and is given consecutive numbers. Here, the management number is 000000
It is an integer starting from 01 and incremented by 1 each time call data is recorded. Also, as the information indicating whether or not the data is backed up to removable media,
“0” is assigned as information indicating that backup has not been performed, and “1” is assigned as information indicating that backup has been performed.

In FIG. 2, if the recording start button of the operation unit 3 is operated after the power source of the audio recording / reproducing apparatus is turned on, the apparatus enters the recording start standby state.

When a call is started at a certain line terminal connected to the voice recording / reproducing apparatus, the busy detecting unit 101 detects busy based on the input voice level (step Sl), and a detection signal is sent to the device control unit 201. Is output. When the detection signal is input, the device control unit 201 controls the recording / reproducing unit 5 to record the audio data input to the signal input unit 1 and compressed and processed as new audio data in the audio data recording area unit 501 ( Step S2). At the same time, the index recording area section 5 of the recording / reproducing section 5 is used as index data such as the channel number of the channel where recording is started and the call start date and time.
The recording / reproducing unit 5 is controlled so that the data is recorded in No. 02 (step S3).

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 5 to stop recording the input signal (step S5). At the same time, the recording / reproducing unit 5 is controlled so that the index data of the call end date / time is recorded in the index recording area unit 502 of the recording / reproducing unit 5 (step S6). At this time, information indicating whether or not it has been backed up is recorded in the index recording area section 502 as unbacked up (“0”), as shown in the lower side of FIG.

As described above, FIG. 3 shows an example of index data after recording a plurality of call data. Figure 3
As shown in (a), the management number 000046 before the start of recording.
Up to 91 call data are recorded. After the recording, as shown in FIG. 3B, the management number 00004696
Up to the call data of will be recorded.

Next, the backup operation of the audio recording / reproducing apparatus to the removable medium will be described with reference to FIGS. 4, 5 and 6.

FIG. 4 is a flow chart for explaining the backup operation to the removable medium, FIG. 5 is a diagram showing changes in the voice data information recorded in the voice data information recording section 8 in accordance with the backup operation, and FIG. It is a figure which shows the change of the index data updated with a backup operation.

Among the index data, the voice data information recorded in the voice data information recording section 8 is the channel number to which the voice signal of the call is input, the management number for managing the recorded call data, the call start date and time, the call. It is composed of 5 elements, which are the 4 elements of the end date and time and the media management number indicating to which removable medium the data is backed up. The voice data information is created every time the call data is backed up to the removable medium.

The recording operation described in FIG. 2 is repeated to record the voice data and the index data in the voice data recording area 501 and the index recording area 502, and then the backup start button of the operation unit 3 is operated to perform the backup operation. Start.

The device control section 201 confirms whether or not the media management information is recorded in the media management information recording section 703 (step Sll). If it is not recorded, a new media management number is added to the media management information recording section. 703
The recording is controlled to be recorded (step S12). At this time, the recorded media management number is a new media management number not recorded in the storage unit 202. For example,
The previous media management number is 030801 and 030
If 802 is not recorded, the new media management number is set to 030802, and this media management number is also recorded in the storage unit 202 (step S13).

The device control section 201 reads the index data of the audio data recorded in the index recording area section 502 (step S14), and determines the information indicating whether the index data has been backed up (step S15). ). If this information is "0", that is, if it is not backed up, the removable media recording area unit 7 is controlled to record the audio data in the audio data recording area unit 701 of the removable media recording area unit 7 (step S16). At the same time, of the index data recorded in the index recording area unit 502, the recording / reproducing unit 7 is configured to record the channel number, the management number, the call start date / time, and the call ending date / time in the index recording region unit 702 of the recording / reproducing unit 7. Control (step S17).

Further, the audio data information recording section 8 is also controlled to record the index data recorded in the index recording area section 702 and the media management information recorded in the media management information recording section 703 (S18).

Further, the information indicating whether or not the index recording area section 502 has been backed up is changed to "1", that is, the information indicating that the backup has been completed (S19).

It is judged whether or not the next index data exists (step S20), and if it exists, the process returns to step S14.

FIG. 5 is a diagram showing changes in the audio data information recorded in the audio data information recording section 8 in accordance with the backup operation. Before the backup is started, as shown in FIG. 5A, data indicating that the audio data up to the management number 00004691 is recorded on the removable medium with the medium management number 030801 is recorded in the audio data information recording unit 8. As shown in FIG. 5B, after the backup is completed, the management number is 00006692-0000.
Audio data up to 4696 is media management number 0308
No. 02 removable data is recorded in the audio data information recording unit 8.

As described above, FIG. 6 shows the index recording area portion 70 after a plurality of call data are backed up.
It is an example of the index data of 2. Before the backup is started, no call data is recorded as shown in FIG. After the backup is completed, as shown in FIG. 6B, the call data of management numbers 0000462 to 00004696 are recorded.

Next, a search operation of the call data recorded in the recording / reproducing section 5 will be described with reference to FIGS. 7 and 8.
FIG. 7 is a flowchart for explaining the search operation of the call data recorded in the recording / reproducing unit 5, and FIG. 8 is a diagram showing an example of the search result displayed on the display unit 6.

The operation unit 3 is operated to input, for example, a certain channel number as a search condition (search key), and the operation for searching the call data recorded by this channel number is started (step S31). The device control unit 201 controls the index recording area unit 502, reads the index data relating to the recorded call data (step S32), and inputs the read data to the search condition comparison unit 203 (step S33). The search condition comparison unit 203 compares the read index data with the search condition, and outputs the comparison result to the device control unit 201 (step S34). It is determined whether or not the comparison result shows a match with the search condition (step S35), and if it shows a match, the matching index data is displayed on the display unit 6 as the search result (step S36). Next, it is determined whether or not the next index data exists (step S37), and if it exists, step S32.
Return to. Although the search operation of the call data recorded in the recording / reproducing unit 5 has been described above, the call data recorded in the removable media recording / reproducing unit 7 can be similarly searched.

In FIG. 8, the index data is shown in FIG.
When the data is as shown in (b), it is the search result when the channel number 1 is searched as the search condition.

Next, the operation of searching for the backed up call data will be described with reference to FIGS. 9 and 10. FIG. 9 is a flowchart showing a search operation of the backup call data, and FIG. 10 is a view showing an example of the search result displayed on the display unit 6.

The operation unit 3 is operated to input, for example, a call start date and time and a channel number as a search condition (search key), and an operation for searching the call data recorded by the call start date and time and the channel number is performed. Start (step S41). The device control unit 201 controls the voice data information recording unit 8, reads the index data relating to the recorded call data (step S42), and inputs the read data to the search condition comparison unit 203 (step S43). The search condition comparison unit 203 compares the read index data with the search condition, and outputs the comparison result to the device control unit 201 (step S44). It is determined whether or not the comparison result shows a match with the search condition (step S45), and if it shows a match, the matching index data is displayed on the display unit 6 as the search result (step S46). Next, it is determined whether or not the next index data exists (step S47),
If it exists, the process returns to step S42.

In FIG. 10, the index data is shown in FIG.
In the case of the data as shown in (b), it is a search result when the call start date and time 2001.01.03, 13:00 to 14:00, and channel number 1 are searched as search conditions.

Next, the reproducing operation will be described with reference to FIG. FIG. 11 is a flowchart explaining the reproducing operation.

As described above, when the call data that matches the search conditions are searched and the operation section 3 is operated to instruct the reproduction of the call, the device control section 201 controls the recording / reproducing section 5 and the index recording area section. The management number of the retrieved call data is read from 502 (step S51), the recording / reproducing unit 5 is controlled based on the read management number, the voice data to be reproduced is read from the voice data recording area unit 501, and the read voice is read. The data is input to the voice decompression unit 401 (step S52).

The voice expanding unit 401 expands the compressed voice data, performs analog conversion, and outputs the analog data to the voice amplifying unit 402 (step S53). Voice amplifier 40
2 amplifies the input audio signal and outputs it from the speaker 403 to the outside (step S54).

As described above, according to this embodiment, a unique media management number is recorded on each removable medium. Also, each time the call data is backed up, the index data relating to the call data recorded and the management number of the backed up removable medium are recorded in the voice recording / reproducing device side (voice data information storage unit 8 or storage unit 202). become.

As a result, when the call data backed up in the removable medium is searched, it is possible to know in which removable medium the voice data as the search result was backed up. As a result, desired call data can be easily searched and reproduced.

[0051]

As described above, according to the present invention, it is possible to provide a recording / reproducing apparatus capable of easily specifying a removable medium in which predetermined call data is recorded.

[Brief description of drawings]

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

FIG. 2 is a flowchart illustrating a call recording operation of the voice recording / reproducing device.

FIG. 3 is a diagram showing changes in index data updated by a call record.

FIG. 4 is a flowchart illustrating a backup operation of the audio recording / reproducing apparatus to a removable medium.

FIG. 5 is a diagram showing changes in audio data information recorded in an audio data information recording unit in accordance with a backup operation.

FIG. 6 is a diagram showing changes in index data updated with a backup operation.

FIG. 7 is a flowchart illustrating a call data search operation.

FIG. 8 is a diagram showing an example of a search result.

FIG. 9 is a flowchart showing a search operation for backed up call data.

FIG. 10 is a diagram showing an example of a display result.

FIG. 11 is a flowchart illustrating a reproduction operation.

[Explanation of symbols]

1 Signal input section 2 control unit 3 operation part 4 Audio output section 5 Recording / playback section 6 Display 7 Removable media recording / playback unit 8 Voice data information recording section 101 Busy detection section 102 voice compression unit 201 Equipment control unit 202 storage 203 Search condition comparison unit 401 voice decompression unit 402 voice amplifier 403 speaker 501 voice data recording area section 502 Index recording area section 701 audio data recording area section 702 index recording area section 703 Media management information recording unit

Claims (2)

[Claims] 1. A first recording / reproducing unit for recording audio data input from a communication line and index data related to the audio data, and audio data, index data and removable recorded in the first recording / reproducing unit. Second, recording information for identifying the medium on the removable medium
And a voice data information recording unit for recording index data and media management information recorded on the removable medium. 2. The operation unit according to claim 1, further comprising an operation unit for inputting a search code for searching the audio data recorded in the first or second recording / reproducing unit, and an element matching the search code. An audio recording / reproducing apparatus comprising: a search means for searching index data from information recorded in the audio data information recording section and a display means for displaying a result of the search.