JP2007189398A - Voice recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a voice recording device capable of recording the call conversation content which is judged to be needed to record on a user side, in a recording medium without troublesome operation. <P>SOLUTION: A buffer memory is provided for writing sequentially and storing voice data corresponds to the voice during call conversation, from the start of the call conversation. According to the record start command, the voice data read from the buffer memory are recorded in a recording medium while the vice data stored in the buffer memory are read out. According to the end of call, all the content of the buffer memory is re-written to an initial value. In this constitution, if the user performs the recording start operation after starting the call conversation, all the conversation content from the start of the call conversation can be recorded in the recording medium. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

   The present invention relates to a voice recording apparatus for recording voice during a telephone call on a recording medium.

  In recent years, communication systems have been constructed that enable voice calls using telephones using the Internet protocol. As a telephone used in such a communication system, a so-called soft phone constructed by software on a personal computer (hereinafter referred to as a PC) is known. Furthermore, as such a soft phone, one having a recording function for recording a voice during a call has been proposed (see, for example, Patent Document 1).

  In a softphone having such a recording function, a voice during a call is recorded on a recording medium such as a hard disk in response to a recording start command from the user.

  However, after starting a call, if the user starts recording after feeling the need for recording based on the content of the call, it is not possible to record all conversations that need to be recorded from the beginning. Occurred.

  Therefore, a method is conceivable in which recording is always performed simultaneously with the start of the call, and the recorded content is reproduced after the call is finished, so that the user can determine whether or not the recorded content is necessary.

However, if such a method is adopted, the user must listen to this even when the recording time is long. Furthermore, from the viewpoint of securing the free space of the hard disk, there is a problem that an operation to delete unnecessary recording data on the user side is necessary and the operation is troublesome.
JP 2005-057511 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide an audio recording apparatus capable of recording a call content, which is determined to be necessary for recording on the user side, on a recording medium without performing troublesome operations. .

  A voice recording apparatus according to the present invention is a voice recording apparatus for recording voice data corresponding to voice during a call on a recording medium, a buffer memory for sequentially writing and storing the voice data from the start of the call, and a recording start The voice data read from the buffer memory is recorded on the recording medium while reading the voice data stored in the buffer memory in accordance with a command in the order of writing, and the buffer is recorded in response to the end of the call. Recording control means for rewriting all the stored contents of the memory to predetermined initial values.

  According to the voice recording apparatus of the present invention, even when the user performs a recording start operation after the start of the call, it is possible to record all the call contents from the start of the call on the recording medium.

  A buffer memory for sequentially writing and storing voice data from the start of the call is provided, and the voice data read from the buffer memory is read onto the recording medium while reading the voice data stored in the buffer memory in response to a recording start command. The data is recorded, and all the contents of the buffer memory are rewritten to the initial values when the call ends.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram showing a part of the configuration of a personal computer in which a softphone including a voice recording apparatus according to the present invention is constructed.

  As shown in FIG. 1, in this personal computer (hereinafter referred to as a PC), a softphone 1 is built by software.

  Also connected to the PC are a headset 2 as a telephone receiver, an IP (Internet Protocol) network 3 as a telephone line, a display device 4, and an operation device 5 for receiving various operations from the user. Further, this PC is equipped with a buffer memory 6 made of, for example, a RAM (Random Access Memory) and a recording memory 7 made of a hard disk device.

  The headset 2 has a built-in microphone that converts voice uttered by the user into a voice signal and a speaker that acoustically outputs the voice signal from the other party.

  The controller device 5 receives a call start command, a telephone number input, a call request command, a call end command, and a recording start command from the user, and supplies signals corresponding to the commands to the softphone 1. That is, when a user performs a telephone number input and a call request command operation using the operation device 5 when starting a call using the softphone 1, the operation device 5 displays a telephone number signal indicating a series of input numbers. At the same time, a call request command signal is supplied to the softphone 1. When the user performs a call start command operation using the operation device 5 to start a call in response to a call request from the other party, the operation device 5 supplies a call start command signal to the softphone 1. In addition, when the user performs a recording start command operation using the operation device 5 in order to record a voice during a call, the operation device 5 supplies a recording start command signal to the softphone 1. When the user performs a call end command operation using the operation device 5 in order to end the call, the operation device 5 supplies a call end command signal to the softphone 1.

  The softphone 1 includes a telephone transmission / reception processing unit 11, a recording control unit 12, a voice text conversion processing unit 13, and a call content monitor image generation unit 14 constructed by software.

When the call transmission / reception processing unit 11 receives a call request packet via the IP network 3, the telephone transmission / reception processing unit 11 should inform the user that there is a call request from the transmission source (calling party) indicated by the call request packet. An image signal is supplied to the display device 4. Here, when the user performs a call start command operation on the operation device 5, the operation device 5 supplies a call start command signal to the telephone transmission / reception processing unit 11 and the recording control unit 12. Then, after executing the call start command operation, the user uses the headset 2 to start a conversation with the call partner. During this time, the telephone transmission / reception processing unit 11 determines whether or not an audio signal is supplied from the headset 2, and if it is determined that the audio signal is supplied, the audio signal is converted into an audio packet as audio data. This is converted and sent out on the IP network 3. As a result, the voice packet corresponding to the voice uttered by the user toward the microphone of the headset 2 is transmitted via the IP network 3 to the transmission source (calling party) that made the call request as described above. Further, the telephone transmission / reception processing unit 11 uses the voice packet corresponding to the voice uttered by the user as described above as the transmission voice packet P _TX , and uses the buffer memory 6, the recording memory 7, the recording control unit 12, the voice text conversion processing unit 13, and the like. The call contents are supplied to the monitor image generation unit 14 respectively.

When the user inputs the subscriber telephone number of the other party using the operation device 5 and performs a call request command operation, the operation device 5 calls the call request command together with a telephone number signal indicating the subscriber phone number. The signal is supplied to the telephone transmission / reception processing unit 11 and the recording control unit 12. In response to the telephone number signal and the call request command signal, the telephone transmission / reception processing unit 11 generates a call request packet including transmission destination address information corresponding to the telephone number and sends it to the IP network 3. Thereafter, when a voice packet as voice data is received via the IP network 3, the telephone transmission / reception processing unit 11 demodulates the received voice packet into a voice signal and supplies this to the headset 2. Thereby, the sound based on the voice packet transmitted from the call partner is acoustically output from the speaker of the headset 2. Further, the telephone transmission / reception processing unit 11 converts the received voice packet as the received voice packet _{PRX into} the buffer memory 6, the recording memory 7, the recording control unit 12, the voice text conversion processing unit 13, and the call content monitor image generation circuit. 14 respectively.

Buffer memory 6 in response to a write signal WR1, which is supplied from the recording control unit 12, sequentially writes in storing the received voice packet P _RX and transmitting voice packets P _TX is supplied from the telephone transmitting and receiving unit 11. During this time, when the read signal RD is supplied from the recording control unit 12, the buffer memory 6 reads the stored contents ( _PRX or _PTX ) in the order of writing and supplies them to the recording memory 7. At this time, the buffer memory 6 supplies an empty signal EP to the recording control unit 12 when all the stored contents ( _PRX or _PTX ) have been read. Further, when the erase signal ER is supplied from the recording control unit 12, the buffer memory 6 deletes the stored content by rewriting the stored content to the initial value (for example, 0).

Recording memory 7, if the record write signal WRR1 is supplied from the recording control unit 12 successively stores captures received voice packet P _RX or transmit voice packet P _TX is read from the buffer memory 6 . On the other hand, if the record write signal WRR2 from the recording control unit 12 is supplied, the recording memory 7 takes in directly received voice packet P _RX or transmit voice packet P _TX is supplied from the telephone transmitting and receiving unit 11 sequentially I will remember it. Further, when the reproduction signal RP is supplied from the recording control unit 12, the recording memory 7 reads the stored reception voice packet _PRX or transmission voice packet _PTX and uses this as a reproduction voice packet. 12 is supplied. At this time, the recording control unit 12 supplies the reproduced voice packet to the telephone transmission / reception processing unit 11. Then, the telephone transmission / reception processing unit 11 demodulates the reproduced audio packet into an audio signal and supplies the audio signal to the headset 2. Thus, from a speaker built in the headset 2, sound corresponding to the received voice packet P _RX or transmit voice packet P _TX is stored in the recording memory 7 is acoustic output. That is, the voice during a call recorded in the recording memory 7 is reproduced.

Incoming text speech text processing apparatus 13, first, by performing a speech recognition process on the received audio packet P _RX and transmitting voice packets P _TX, representing the voice represented by such voice packets at string The data is converted into data and supplied to the call content monitor image generation unit 14. That is, the speech text processing apparatus 13 uses the received text data T _RX that represents the voice represented by the received voice packet P _RX as a character string, and the voice represented by the transmitted voice packet P _TX as a character string. The transmitted transmission text data T _TX is supplied to the call content monitor image generation unit 14.

As described above, the call content monitor image generation unit 14 sequentially receives the reception voice packet P _RX , the transmission voice packet P _TX , the reception text data T _RX, and the transmission text data T _TX individually. Then, based on these pieces of information, the call content monitor image generation unit 14, as shown in FIG. 2, the time axis display unit TM, the other party utterance time zone display unit TZ _PA , the own side utterance time zone display unit TZ _SF , And an image signal representing the call content monitor image having the voice text display unit TXT.

That is, the call content monitor image generation unit 14 extracts time information indicating the time at which the call is started and the current time from the header information of each of the received reception voice packet _PRX and transmission voice packet _PTX. Based on the information, an image signal representing the time axis display unit TM as shown in FIG. 2 is generated that represents the time from the call start time to the current time on a horizontal (or vertical) axis including a plurality of reference times. Further, the call content monitor image generation unit 14 is based on the transmission voice packet _PTX , and a belt-like region BE indicating a section in which the user (self) speaks along the time axis indicated by the time axis display unit TM. generates an image signal representing a time-series manner the placed such in FIG their side speech time zone display unit TZ _SF (indicated by hatching). Further, the call content monitor image generation unit 14, based on the received voice packet _PRX , along a time axis indicated by the time axis display unit TM, a belt-like region BE (hatched line) indicating a section in which the other party speaks at shown) to generate an image signal representing a time-series manner the placed such in FIG mating speech time zone display unit TZ _PA a. Furthermore, the call content monitoring image generation section 14, each strip each region BE of the self side speech time zone display unit TZ _SF and mating speech time zone display unit TZ _PA, N packet of at the head portion (N is a natural number) _Is extracted from the received text data T _RX or the transmitted text data T _TX . Then, the call content monitor image generation unit 14 generates an image signal representing the voice text display unit TXT in which the character string indicated by the extracted text data is arranged in association with each belt-like region BE as shown in FIG. To do. That is, for each utterance time zone, text data for n characters (n is a natural number) corresponding to the voice at the head portion is extracted from the received text data _TRX or the transmitted text data _TTX , and this is extracted as voice. It is displayed on the text display section TXT.

The call content monitor image generation unit 14 includes image signals corresponding to the time axis display unit TM, the other party utterance time zone display unit TZ _PA , the own side utterance time zone display unit TZ _SF , and the voice text display unit TXT as described above. Is supplied to the display device 4. At this time, the display device 4 displays a call content monitor image as shown in FIG. 2 according to the image signal.

  Therefore, according to the call content monitor image, the user can visually overlook the call content from the call start time to the current time.

  The recording control unit 12 starts recording control as shown in FIG. 3 when transmission / reception of a voice packet with the calling party is started after the call start command signal or the call request command signal is supplied from the operation device 5.

In FIG. 3, first, the recording controller 12 repeatedly supplies the write signal WR as described above to the buffer memory 6 at predetermined intervals (step S0). By executing the consuming steps S0, buffer memory 6 is successively written in storing the received voice packet P _RX and transmitting voice packets P _TX is supplied from the telephone transmitting and receiving unit 11. That is, the buffer memory 6 in response to a call initiation, we are going to store the received voice packet P _RX and transmitting voice packets P _TX corresponding to the call voice. Next, the recording control unit 12 determines whether or not the recording start command signal is supplied from the controller device 5 (step S1). If it is determined in step S1 that the recording start command signal is supplied, the recording control unit 12 determines whether or not the empty signal EP is supplied from the buffer memory 6 (step S2). If it is determined in step S2 that the empty signal EP has not been supplied, that is, if there is an audio packet that has not been read out in the buffer memory 6, the recording control unit 12 repeatedly reads out every predetermined period. While supplying the signal RD to the buffer memory 6, the recording write signal WRR1 is supplied to the recording memory 7 (step S3). By executing step S 3, the received voice packet P _RX and the transmitted voice packet P _TX stored in the buffer memory 6 are read out and stored in the recording memory 7. That is, from the buffer memory 6, read the received voice packet P _RX and transmitting voice packets P _TX corresponding to call voice up to the call start time - current time is sequentially than is gradually stored in the recording memory 7 . On the other hand, if it is determined in step S2 that the empty signal EP has been supplied, that is, if all the audio packets stored in the buffer memory 6 have already been read, the recording control unit 12 performs the predetermined cycle. The recording recording signal WRR2 is repeatedly supplied to the recording memory 7 every time (step S4). By executing step S4, the received voice packet P _RX and the transmitted voice packet P _TX transmitted from the telephone transmission / reception processing unit 11 are directly stored in the recording memory 7.

  After execution of step S3 or S4, or when it is determined in step S1 that the recording start command signal has not been supplied, the recording control unit 12 determines whether or not a call end command signal has been supplied from the controller device 5. A determination is made (step S5). If it is determined in step S5 that the call end command signal is not supplied, the recording control unit 12 returns to the execution of step S1 and repeatedly executes the operation as described above. On the other hand, when it is determined in step S5 that the call end command signal has been supplied, the recording control unit 12 supplies the erasure signal ER to the buffer memory 6 (step S6). By executing step S6, the buffer memory 6 deletes the stored contents by rewriting all the stored contents to initial values (for example, 0).

  Therefore, according to such recording control, even when the user performs a recording start operation during a call, the call contents are recorded in the recording memory 7 from the start of the call.

  Therefore, the user starts the recording only when it is determined that the call contents need to be saved while visually confirming the contents of the call from the start of the call to the present time by using the call contents monitor image as shown in FIG. If the operation is performed, all the contents of the call from the start of the call are recorded.

  In the above embodiment, the contents of the buffer memory 6 are immediately stored in the recording memory 7 in response to the recording start command operation (steps S1 to S3), but immediately after the end of the call, that is, step 5 in FIG. And the contents of the buffer memory 6 may be stored in the recording memory 7 at the time between S6 and S6.

In the above embodiment, the call content monitor image as shown in FIG. 2 is generated based on the received voice packet _PRX and the transmitted voice packet _PTX transmitted from the telephone transmission / reception processing unit 11 during a call. A call content monitor image as shown in FIG. 2 may be generated based on the voice packet reproduced from the recording memory 7.

  In the above embodiment, the case where the voice recording apparatus according to the present invention is applied to a soft phone has been described. However, the present invention is also applicable to an analog telephone.

It is a figure which shows schematic structure of the personal computer with which the soft phone provided with the audio | voice recording apparatus by this invention is constructed | assembled. It is a figure which shows an example of a call content monitor image. It is a figure which shows the flow of the recording control implemented in the recording control part.

Brief description of symbols

DESCRIPTION OF SYMBOLS 1 Softphone 2 Headset 3 IP network 4 Display apparatus 5 Operation apparatus 6 Buffer memory 7 Recording memory 11 Telephone transmission / reception process part 12 Recording control part 13 Speech text conversion process part 14 Call content monitor image generation part

Claims (5)

A voice recording device that records voice data corresponding to voice during a call on a recording medium,
A buffer memory for sequentially writing and storing the audio data from the start of the call;
The voice data read from the buffer memory is recorded on the recording medium while reading the voice data stored in the buffer memory in accordance with a recording start command in the order of writing, and at the end of the call And a recording control means for rewriting all the stored contents of the buffer memory to a predetermined initial value. Voice text processing means for converting voice based on the voice data into text data represented by a character string by performing voice recognition processing on the voice data;
The voice recording apparatus according to claim 1, further comprising: an image generation unit configured to generate an image signal for displaying the character string represented by the text data on a display.   3. The display device according to claim 2, wherein the display unit also displays an image representing a horizontal or vertical time axis including a plurality of reference times from the start time of the call to the current time. The voice recording device described.   The image generation means detects the other party's utterance time zone spoken by the other party and the own side utterance time zone spoken by the other side based on the audio data, and associates the band-like regions individually representing these on the time axis. The voice recording apparatus according to claim 3, wherein the voice recording apparatus is displayed on the display.   The image generating means corresponds to the character string of n characters (n is a natural number) corresponding to the voice at the head of each of the other party utterance time zone and the own side utterance time zone, corresponding to the display position of the band-like region The voice recording apparatus according to claim 4, wherein the voice recording apparatus is displayed on the display.

Images