JP2000232509A - Recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record a DTMF code useful for the retrieval with a small storage capacity by providing a control section or the like that controls retrieval and reproduction of audio data from a recording and reproducing section according to a retrieval condition set by a retrieval condition setting section. SOLUTION: DTMF code detection condition comparison sections 202-205 store a detection condition of a DTMF code entered from a retrieval/detection condition input section 305 of an operating panel 3 to an internal memory and compare it with a detection signal outputted from a DTMF code detection section 103 and output the comparison result to a device control section 201. The device control section 201 receives the signals denoting the comparison results outputted from a plurality of the DTMF code detection condition comparison sections 202-205, selects the DTMF code matching the detection condition and records it to an index recording area of a recording and reproducing section 5 as its control. Since the DTMF code required for the retrieval is selected and recorded by a recorder in this way, a storage device with a small capacity is enough for the purpose.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a call recording / reproducing apparatus for recording and reproducing a voice signal of a telephone call on a telephone line.

[0002]

2. Description of the Related Art A voice signal connected to a plurality of telephone lines and communicating is encoded, and the encoded voice data and a DTMF code output from a dial of a telephone are simultaneously recorded in a recording device. A call recording / reproducing apparatus for searching using a DTMF code is disclosed in Japanese Patent Application Laid-Open No. 7-307788 (recording apparatus for telephone conversation contents).

[0003]

In the above-mentioned conventional call recording / reproducing apparatus, the operator inputs a specific code for classifying the contents of the call after the call is completed. For this reason, it is necessary to buffer in the memory all the DTMF codes input from the other party's telephone number input to the automatic answering system or the like before the call is started, and to record them in the recording device. In particular,
In order to support calls on a telephone line connected by multiple channels, a large-capacity memory and storage device for recording the telephone number or DTMF code of the other party have been required.

In the conventional call recording / playback apparatus, since the meaning of the input DTMF code is not defined, the DTMF code is determined by taking the logical sum or the logical product of the plurality of input DTMF codes. Can not.

In the prior art, it is not possible to easily determine what kind of call the contents of the call record is from a call list that is searched and displayed as a list.

[0006] Further, if a specific call that is not desired to be heard by an unspecified person is not recorded, even if a specific person wants to know the contents of the call at a later date, he or she cannot hear it again.

Further, in order to cope with the above-mentioned problem, a telephone call may be recorded but search cannot be performed. In this case, record the specific code of the search exclusion at the same time as the call,
When searching, call records containing this specific code will be excluded from the search. However, the specific code for the search exclusion must be changed periodically or at any time in case the code is leaked. In this case, an accurate search exclusion operation is performed unless the old exclusion code in the index data is changed to the new exclusion code based on data in which all change histories of exclusion codes different in search exclusion used before the change are recorded. Can not do.

According to the present invention, a DTMF code useful for retrieval can be recorded with a small storage capacity by setting a detection condition of a DTMF code to be recorded. A detailed search of a call record can be performed using a code, and a confidential call recording a specific code is prevented from being searched. It is still another object of the present invention to provide a call recording / reproducing apparatus capable of retrieving a call record recorded before a change even when a specific code is changed and used at an arbitrary time.

[0009]

SUMMARY OF THE INVENTION According to the present invention, there is provided a call recording / reproducing apparatus for recording and reproducing call information inputted from a telephone line. A DTMF code detection unit for detecting an input DTMF code, a DTMF code detection condition comparison unit for comparing DTMF code output from the DTMF code detection unit with a DTMF code detection condition, and storage of the DTMF code detection condition comparison unit Part D
A detection condition input unit for inputting a TMF code detection condition;
Audio data output from the audio compression unit and the DTM
A recording / reproducing unit that records and reproduces a DTMF code output from an F-code detecting unit; a search condition setting unit that sets a search condition of audio data of the recording / reproducing unit;
The MF code detection condition comparison unit selects a DTMF code which matches the detection condition and records the DTMF code in the recording / reproduction unit, and further controls the recording / reproduction unit in accordance with the search condition set by the search condition setting unit. And a control unit for controlling to search and reproduce audio data from the DT.
When the DTMF code detected by the DTMF code detection unit and the detection exclusion detection condition stored in the DTMF code detection condition comparison unit match, the MF code detection condition comparison unit detects the exclusion of the search by the control unit. This is a call recording and reproducing device that outputs a condition matching signal.

The present invention also relates to a call recording / reproducing apparatus for recording and reproducing call information input from a telephone line, wherein the control unit determines that the DTMF code detected by the DTMF code detection unit is the DTMF code detection condition. When the comparison unit matches the detection condition to be excluded from the search, control is performed such that the code of the search exclusion is recorded in the recording / playback unit together with the audio data, and further, the search condition set in the search condition setting unit is satisfied. Therefore, when searching for audio data from the recording / reproducing unit, the call recording / reproducing apparatus controls to exclude audio data having a search exclusion code from the search.

Further, the present invention relates to a call recording / reproducing apparatus for recording and reproducing call information input from a telephone line, wherein the control unit determines that the DTMF code detected by the DTMF code detection unit is the DTMF code detection condition. When the comparison unit matches the detection exclusion detection condition, control is performed so that the detection exclusion code stored in the DTMF code detection condition comparison unit is converted into a different code and recorded in the recording / reproducing unit. A call recording / reproducing apparatus characterized in that:

The present invention also relates to a call recording / reproducing apparatus for recording / reproducing call information input from a telephone line, wherein the control unit determines that the search condition set in the search condition setting unit is the DTMF code detection condition comparison. A call recording / reproducing apparatus for controlling to search and reproduce voice data from the recording / reproducing unit using the converted retrieval exclusion code when a search condition to be excluded from search stored in the unit is matched.

Further, according to the present invention, in a call recording / reproducing apparatus for recording and reproducing call information input from a telephone line, the DTMF code detection condition comparing section stores a detection condition to be excluded from the search. And a second recording unit for storing search conditions to be excluded from the search.

Further, according to the present invention, in a call recording and reproducing apparatus for recording and reproducing call information input from a telephone line, a search exclusion code stored in a first storage unit of the DTMF code detection condition comparison unit and a second exclusion code are stored. The call exclusion code stored in the storage unit is a different code.

Further, according to the present invention, in a call recording / reproducing apparatus for recording and reproducing call information input from a telephone line, the control unit includes a product of a plurality of detection conditions as a detection condition in the DTMF code detection condition comparison unit. Alternatively, the present invention is a call recording / reproducing apparatus for controlling a sum or a combination of a product and a sum as a detection condition, selecting a DTMF code that matches the search condition, and recording the DTMF code in the recording / reproducing unit.

Further, according to the present invention, in a call recording / reproducing apparatus for recording and reproducing call information input from a telephone line, the control unit includes a plurality of search conditions as search conditions set by the search condition setting unit. A call recording / reproducing apparatus that controls a search / reproduction of audio data from the recording / reproducing unit in accordance with a search condition using a product or a sum or a combination of a product and a sum.

Further, according to the present invention, in a call recording / reproducing apparatus for recording and reproducing call information input from a telephone line, a detection condition stored in a storage unit of the DTMF code detection condition comparison unit or the search condition setting unit is used. A call recording / reproducing apparatus including a display unit for displaying set search conditions or audio data recorded in the recording / reproducing unit.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a block diagram of a call recording / reproducing apparatus according to one embodiment of the present invention.

The signal input unit 1 includes an incoming call detection unit 101, a voice compression unit 102, and a DTMF code detection unit 103. Incoming call detecting section 101 detects a signal indicating that an incoming call has been received. As the signal indicating that the call has been received, a signal is used which detects the presence or absence of a voice input voltage of a certain level or higher in the telephone line or the difference between the voltage when the telephone line is on-hook and the voltage when the telephone line is off-hook. The signal detected by the incoming call detection unit 101 is sent to the device control unit 201. Also, the incoming call detection unit 10
When the external control input changes or when certain conditions, such as when the external control input is continued for a certain period of time, are satisfied, it is determined that the call has started or ended, and a recording start signal and a recording stop signal are output to the device control unit 201. I do.

The above recording start condition and recording stop condition are as follows:
Different incoming call detection conditions, i.e., a signal that detects the presence or absence of a voice input voltage on the telephone line or a signal that detects the difference between the voltage at the time of on-hook and off-hook of the telephone line, or the product or signal of a signal that detects a change in the external control input condition The sum may be output. This function can be used when recording only a part that meets a specific condition in a conversation or not recording only a part that meets a specific condition.

The voice compression section 102 performs voice compression processing on the input voice signal and outputs the voice signal as voice data. The output audio data is recorded in the audio data recording area 501 of the recording / reproducing unit 5.

The DTMF code detection section 103 detects a DTMF code from an input signal and outputs the detected DTMF code to the device control section 201.

The control unit 2 includes a device control unit 201 and a plurality of DTMF code detection condition comparison units 202 to 205. By operating a recording start button provided on the operation panel 3, the control unit 2 records audio data and a DTMF code obtained by compressing the input signal input to the signal input unit 1 in the recording area of the recording and reproducing unit 5. Control to do. The control unit 2 displays information recorded on the recording device on the recording content display unit 6, and at the same time, controls to read audio data recorded on the recording device and output it to the audio output unit 4.

The device control unit 201 receives the comparison result signals output from the plurality of DTMF code detection condition comparison units 202 to 205, selects a DTMF code that matches the detection condition, and records the index in the recording / reproducing unit 5. It is controlled to record in the area.

DTMF code detection condition comparison units 202-2
Reference numeral 05 denotes a DTMF code detection condition input from the search / detection condition input unit 305 of the operation panel 3 (designation of the number of characters, designation of a code input at the beginning or end of a call, or identification of a specific code). Designation for occurrences of the number of times and their logical sum / logical product)
Stored in the internal memory of the TMF code detection condition comparison unit,
The detection signal is compared with the detection signal output from the TMF code detection unit 103, and the comparison result is output to the device control unit 201.

In this embodiment, different codes are stored in the two internal memories of the DTMF code detection condition comparison unit 205, respectively. "First search exclusion" in the first internal memory
And the second internal memory stores a search condition which is a code of “second search exclusion”.

The operation panel 3 includes a recording start button 301,
Operation buttons such as a recording stop button 302, a reproduction start button 303, a reproduction stop button 304, a search / detection condition input unit 305, and list selection buttons 306 and 307 are provided.
The operation buttons on the operation panel 3 are used to start and stop recording or reproduction of an input signal, and to input search conditions of a call record recorded in an internal memory of the DTMF code detection condition comparison unit or to make a call from a search list. Instructs selection of recording.

The audio output unit 4 includes an audio expansion unit 401, an audio amplification unit 402, and a speaker 403. Voice expansion unit 4
01 performs audio decompression processing on the compressed audio data recorded in the audio data recording area 501 of the recording / reproducing unit 5. The audio amplification unit 402 amplifies the audio signal that has been subjected to the audio expansion process and converted to analog. Speaker 403
Outputs an audio signal to the outside.

The recording / reproducing unit 5 includes a hard disk drive (HDD).
e) and the like. The recording area of the recording unit in the recording apparatus includes an audio data recording area 501 and an index recording area 502. The recording area of the audio data and the index data input according to the instruction of the control unit 2. Perform recording and playback.

The recorded content display unit 6 includes a search result display area 601 and a search condition display area 602, and the control unit 2
And a display unit for displaying search conditions output from the server and search results of the searched call records.

Next, the operation of the telephone call recording / reproducing apparatus of this embodiment will be described. FIG. 2 is a flowchart illustrating the operation of setting the DTMF code detection condition of the call record according to the present embodiment.

First, after the call recording / reproducing apparatus is started, it is determined whether or not to set a condition for detecting a call record.
(step 1) The DTM is input from the search / detection condition input unit 305 of the operation panel 3.
A condition for detecting the F code is set and input. DTMF
The detection conditions set in each of the code detection condition comparison units 202 to 205 are compared with the DTMF code detection condition comparison units 202 to 205.
The data is stored in an internal memory included in the storage unit 205. (Step 2) The operation of setting the detection conditions is performed for the number of times the detection conditions can be set. (step3)

As an example of the above-mentioned detection conditions, for example, when a telephone number transmitted from the other party is to be detected, "from the beginning of the call""10 characters (in the case of a public line)"
Set. If the response of the other party to the automatic answering system is to be detected, for example, if "# 1" is pressed after pressing the 6-digit member number after the start of the call, "before the first # 1"""6characters" is set as the detection condition.
When the call classification number input after the end of the call is to be detected, for example, if the input has three digits, “the last character of the call” and “three characters” are set.

To set a call excluded from search, for example, specify “#####” of the DTMF code, and
In the first internal memory of the F code detection condition comparison unit 205,
"First search exclusion" is set and stored as "######", and at the same time, the DTMF code '****' is designated, and the second internal part of the DTMF code detection condition comparison unit 205 is specified. The information is set and stored in the memory as “second search exclusion” and “****”. As described above, in the present embodiment, the conditions of various DTMF codes are assumed, and the detection conditions are set for each DTMF code.

FIG. 3 is a flowchart for explaining the operation of the telephone call recording apparatus of the present embodiment for recording a telephone call.

First, after setting the conditions for detecting the DTMF code described with reference to FIG. 2, the recording start button 301 is pressed. (Step 4) After the recording start button is pressed, the call recording device is in a standby state until the call start information is input from the incoming call detection unit 101 until the recording stop button 302 is pressed. (step5),
(step14)

When the call start information is input, the recording of the audio data output from the audio data compression unit 102 in the audio data recording area unit 501 is started, an index for the recorded audio data is created, and the index data is indexed. The data is recorded in the recording area 502. (step5), (step
6) Index data includes information such as DTMF code and recording time.

When the DTMF code detection condition comparison unit 205 receives a match output excluding the search during the recording of the voice data, the device control unit 201 recognizes the call being recorded as the search exclusion call and sets the DTMF code as the DTMF code. Writes a character string that does not exist, for example, “NO PLAY”, into the index recording area 502 as the call record index data. (Step 24), (Step 25) After that, the recording is continued until the information of the call termination from the incoming call detection unit 101 is input. (step7), (step8), (step2
4), (step25), (step9)

When the information of the call termination is output from the incoming call detection unit 101, the recording is terminated, and the call start time,
Index data of a call record such as a call duration is recorded in the index recording area 502. (step10), (ste
p11)

The device control unit 201 monitors the outputs of the DTMF code detection condition comparison units 202 to 205 and, if a coincidence output is obtained, additionally records the DTMF code relating to the call record as index data in the index recording area unit 502. (step8), (step9), (step10), (step12), (s
tep13) The above recording operation is performed for all channels connected to the telephone line. (step14)

FIG. 4 is a flowchart for explaining the operation of the call recording device of this embodiment for retrieving the call record and reproducing the call record.

When a call record is being recorded or stopped, a DTMF code search condition is input from the search / detection condition input unit 305. (step15)

When the search condition input in step 15 is DTMF
If the search condition matches the second search condition stored in the code detection condition comparison unit 205, the device control unit 201 converts the input search condition into a code of a character string of "NO PLAY" and searches for a call record. . (step26), (step27)

If the search condition does not match the search condition stored in the DTMF code detection condition comparison unit 205, the device control unit 201 uses the DTMF code search condition, which is the input search condition, to search for the code of the character string "NO PLAY". Search for missing call records. (step26), (step16)

That is, the DTMF code detection condition comparison unit 20
No search can be performed unless a search condition corresponding to the character string of “second search condition” stored in No. 5 is input. The reason that the detection condition to be excluded from the search at the time of recording and the search condition to be excluded from the search at the time of the search are set by different codes is that who knows the detection condition to be excluded from the search at the time of recording (first search condition). However, even if the search condition can be used, the search condition to be excluded from the search (second search condition) is a search condition that can be known only by a specific person such as a system administrator. Thus, when a condition that the call content cannot be searched is input, only the specific person cannot search, and the secret of the call content can be protected. In addition, since a person other than a specific person cannot perform an operation of searching for and deleting a secret call record, the call record can be reliably recorded.

The call records that satisfy the search conditions are displayed in a list in the search result display area 601 of the record content display unit 6, and the input DTMF code search conditions and the search results stored in the DTMF code detection condition comparison units 202 to 204. The contents of the condition are displayed in the search condition display area 602, and an input for selecting a call record to be reproduced is awaited. (step17),
(step28), (step18)

In the index data, a predetermined specific character string, “NO PLAY” in this embodiment,
Is displayed, it is converted to a character string of a first search condition excluding "NO PLAY" from the search and displayed. (step28),
(step29), (step18)

When performing the above search and list display,
When the second search condition (second search condition stored in the DTMF code detection condition comparison unit 205) to be excluded from the search is changed between the time when the call is recorded and the time when the search is performed, the search at the time of the search is performed. If the second search condition to be excluded is not known, list display and reproduction cannot be performed. In other words, if the second search condition at the time of the search is known, all the call records can be searched and reproduced.

Further, if the first search condition and the second search condition are set to the same code, only one type of search exclusion code can be used. Call records that are excluded from the search can be searched.

Here, when the telephone number of the destination called by the operator, for example, "03-4567-8901" is to be searched, "from the beginning of the call""10 characters (in the case of a public line)" Is set, and call information in which the telephone number is recorded is searched. For example, when the Tokyo area is to be searched, the same setting is performed, and a call in which a character string starting with '03' is recorded is searched.

When a specific member number pressed before the first “# 1” after the start of the call, for example, “987654” is to be searched, “before the first # 1” and “6 characters” are set. , The above member number is searched.

If it is desired to search for a call from an important customer, and if the call classification number input after the call is set to '999', the “last character of the call” and “3 characters” are set, and '9' is set.
Search for 99 '.

To specify a call excluded from the search, the code of the second search condition at the time of the search, in this embodiment, "****" is set as the search condition to be excluded from the search. Perform a search. As described above, in this embodiment, DT
Various searches can be performed by assuming the conditions of the MF code.

If there is no call record that satisfies the search condition, a message to that effect is displayed on the display unit, and the search and reproduction process is terminated. (step17, step23)

Next, a desired call record is selected from the list of call records with the list selection buttons 306 and 307, and the reproduction start button 303 is pressed. (step 19) The device control unit 201 reads the selected call record from the audio data recording area unit 501 of the recording / reproducing unit 5 and outputs it to the audio decompression unit 401. The audio data is expanded and converted into an analog audio signal, and then output as audio from a speaker 403 via an audio amplifier 402. (ste
p20) This audio output is output until the designated call recording ends or the playback stop button 304 is pressed. (step21, s
tep22)

[0056]

As described above, according to the present invention, a DTMF code required for retrieval is selected from a large amount of DTMF codes input during a telephone call connected via multiple channels and recorded in a storage device. This eliminates the need for a large-capacity storage device.

According to the present invention, the input DTM
Since the meaning of the F code has been defined,
The DTMF code can be determined by taking the logical sum or the logical product of the TMF codes, and the voice data of the call record and the index data of the call record can be accurately detected or searched.

Further, according to the present invention, it is possible to easily determine what kind of call the content of the call record is from the searched call list.

Further, according to the present invention, even if the specific code is changed at an arbitrary time so that another person cannot search the call record recorded by inputting the specific code, the search record recorded in the recording / reproducing unit can be obtained. A call record / playback device that can search the entire call record excluding the search by entering the specific code after the change without managing the change history of the search exclusion code because the exclusion code is not changed. Can be obtained. In addition, since two types of codes are used as search exclusion codes, which are different between recording and searching,
It is possible to obtain a call recording / reproducing apparatus in which only a specific person such as a system administrator can search a call record excluded from the search and listen to the contents of the call.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a call storage / playback apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating an operation of setting a DTMF code detection condition of the call recording / reproducing apparatus of the embodiment.

FIG. 3 is a flowchart illustrating an operation of recording a call of the call recording / reproducing apparatus of the embodiment.

FIG. 4 is a flowchart illustrating an operation of searching a call record and reproducing a voice of the call record / playback apparatus of the present embodiment.

[Explanation of symbols]

Reference Signs List 1 signal input unit, 2 control unit 3 operation panel unit, 4 audio output unit 5 recording / reproducing unit, 6 recorded content display unit 101 incoming call detection unit, 102 audio compression unit 103 DTMF code detection unit, 201 device control unit 202, 203, 204, 205 DTMF code detection condition comparison unit 301 recording start button, 302 recording stop button 303 reproduction start button, 304 reproduction stop button 305 search / detection condition input unit, 306, 307
List selection button 401 Audio expansion unit, 402 Audio amplification unit 403 Speaker, 501 Audio data recording area 502 Index recording area, 601 Search result display area 602 Search condition holding area

Claims (9)

[Claims] 1. A call recording / reproducing apparatus for recording and reproducing call information input from a telephone line, an audio compression unit for compressing an audio signal input from the telephone line, and a DTMF code for detecting a DTMF code input from the telephone line. And a DT output from the DTMF code detector.
DT comparing MF code and DTMF code detection conditions
An MF code detection condition comparison unit, a detection condition input unit for inputting a DTMF code detection condition to a storage unit of the DTMF code detection condition comparison unit, and audio data output from the audio compression unit and the DTMF code detection unit. A recording / reproducing unit that records and reproduces the output DTMF code; a search condition setting unit that sets a search condition for audio data recorded in the recording / reproducing unit; and a detection condition that is compared by the DTMF code detection condition comparison unit. Control to select and record the DTMF code that matches with the search condition in the recording / reproducing unit, and further control to search and reproduce audio data from the recording / reproducing unit according to the search condition set in the search condition setting unit. A DTMF code detection condition comparison unit, wherein the DTMF code detection unit detects the DTMF code detected by the DTMF code detection unit.
When the F code matches the detection exclusion detection condition stored in the DTMF code detection condition comparison unit, the communication unit outputs a detection condition matching signal to exclude the search to the control unit. 2. The call recording and reproducing apparatus according to claim 1, wherein the control unit compares the DTMF code detected by the DTMF code detection unit with the DTMF code detection condition comparison unit and excludes the DTMF code from the search. When it matches the detection condition, control is performed to record a code indicating search exclusion together with audio data in the recording / reproducing unit, and further, audio data is transmitted from the recording / reproducing unit according to the search condition set in the search condition setting unit. A call recording / reproducing apparatus for performing a control so that voice data having a code indicating search exclusion is excluded from the search. 3. The call recording / reproducing apparatus according to claim 1, wherein the control unit compares the DTMF code detected by the DTMF code detection unit with the DTMF code detection condition comparison unit. When the detection condition that matches the search exclusion is met, control is performed so that the detection exclusion code stored in the DTMF code detection condition comparison unit is converted into a different code and recorded in the recording / reproducing unit. Call recording and playback device. 4. The call recording / reproducing apparatus according to claim 3, wherein the control unit searches for the search condition set by the search condition setting unit to be excluded from the search stored in the DTMF code detection condition comparison unit. If the condition is met,
A call recording / reproducing apparatus which controls to retrieve and reproduce audio data from the recording / reproducing unit using a search exclusion code converted into a different code. 5. The call recording / reproducing apparatus according to claim 1, wherein the DTMF code detection condition comparison unit includes a first storage unit for storing detection conditions to be excluded from the search and a search to be excluded from the search. A call recording / reproducing device comprising a second storage unit for storing conditions. 6. The call recording / reproducing apparatus according to claim 1, wherein a search exclusion code stored in a first storage unit of the DTMF code detection condition comparison unit and a second storage unit are stored in a second storage unit. The call recording / reproducing apparatus, wherein the search exclusion codes are different codes. 7. The call recording / reproducing apparatus according to claim 1, wherein the control unit determines, as a detection condition in the DTMF code detection condition comparison unit, a product or a sum of a plurality of detection conditions or a sum of the products. A call recording / reproducing apparatus, wherein a control is performed such that a DTMF code that matches the search condition is selected and recorded in the recording / reproducing unit. 8. The call recording / reproducing apparatus according to claim 1, wherein the control unit sets a product or a sum or a product of a plurality of search conditions as a search condition set by the search condition setting unit. A call recording / playback apparatus, wherein a combination of sums is used as a search condition, and control is performed to search and play back audio data from the recording / playback unit in accordance with the search condition. 9. The call recording / reproducing apparatus according to claim 1, wherein the search condition stored in the storage unit of the DTMF code detection condition comparison unit or the search condition set by the search condition setting unit is selected. A call recording / reproducing apparatus comprising a display unit for displaying audio data recorded in the recording / reproducing unit.