KR100354134B1 - UnPBX apparatus and method for realtime processing of multi channel voice data - Google Patents

Abstract

The present invention relates to an UnPBX apparatus for processing multi-channel voice data in real time, and a method of processing the same, wherein the UnPBX apparatus provides a voice mail service to subscribers by receiving a trunk line from a public switched telephone network, and provides the voice mailbox service. Server means for storing voice data of subscribers in an internal storage device, controlling recording and reproducing of voice data according to a subscriber's selection, and a memory buffer for storing data necessary for recording or reproducing the voice data for each channel. It comprises a voice data processing means for transmitting the voice data of the various subscribers via the multi-channel to the server means in real time, and delivers the voice data reproduced by the server means to the multi-channel subscribers in real time, multi-channel voice To process the data in real time And a gong.

Description

UnPBX apparatus and method for realtime processing of multi channel voice data}

The present invention relates to an UnPBX device, and more particularly, to an UnPBX device for processing multi-channel voice data in real time and a processing method thereof.

In general, an UnPBX device is a device for integrating a switch, a computer interworking technology, a digital voice processing technology, a fax image processing technology, a digital switching technology, and the like into a PC to provide various and rapid services. A device sold to a customer is referred to as a solution, and the present invention provides a voice mail or voice answering service to subscribers by receiving a trunk line from a variety of services of the UnPBX device, in particular, a public switched telephone network (PSTN). An UnPBX apparatus for processing multi-channel voice data in real time and a processing method thereof.

In order to provide a voice mail system (VMS) or an interactive voice response (IVR) service to subscribers in the UnPBX device as described above, arbitrary voice is automatically recorded or recorded in the voice mailbox within the UnPBX device. A process of reproducing the voice message is required, and the recording and reproducing process of the voice message is operated in an expansion slot of a server means installed to control the UnPBX device.

In particular, in the case of multiplexing the modules for this purpose, efficient interface control is needed due to the common memory of the limited Industry Standard Architecture (ISA) interface in order to process recording and playback of the voice message in real time.

FIG. 1 is a schematic configuration diagram of a conventional UnPBX device for providing a voice mailbox service. Referring to FIG. 1, an UnPBX device for providing a voice mailbox service according to a conventional method may be implemented as a PC. And a plurality of voice signal processing boards 20 connected to expansion slots of a PC constituting the server 10.

At this time, the server 10 has an auxiliary memory (HDD) 11 for storing voice data of subscribers and a main memory for temporarily storing data for data transmission / reception with the voice signal processing board 20 ( 12) and a control unit 13 for controlling the operations of the auxiliary storage device 11 and the main memory 12, storing voice data of the subscribers, and recording and reproducing voice data according to the subscriber's selection. To control.

Meanwhile, the voice signal processing board 20 stores a common memory 21 for transmitting / receiving data to and from the main memory 12 through an ISA interface, and stored in the common memory 21 by an interface with an external channel. And a control unit 23 for controlling the operations of the common memory 21 and the channel-specific voice signal processing unit 22 for processing the recording or reproduction data.

In the case of the conventional UnPBX device, a 16-bit ISA interface is used between the voice signal processing board 20 and the server 10, and mutual data is transferred through a common memory 21 in the voice signal processing board 20. Give and take

In this case, since 128Kbytes are allocated to the expansion board area in general PC, if the expansion board area is divided by 16 which is the total number of expansion slots, a common memory area of 8KByte is allocated per board.

Also, for real-time processing, the voice data, which is adaptively differential pulse code modulated (ADPCM) at 32 Kbps, must be transmitted within 4 KBytes per second. Real-time processing of voice signal is possible only when data transmission / reception process is done. In other words, at least 2 KByte of common memory is required for transmitting / receiving voice signal data of one channel.

Therefore, the conventional method of processing data directly to the common memory of 8KByte has the disadvantage that only 4 channels can be processed per board.

In order to solve this drawback, there is a method of transmitting / receiving a channel signal of 4 channels or more by extending a basic area used in a video signal, which is a video chip mounted with a basic chip. The disadvantage is that you have to modify the BIOS selectively to use the area as common memory.

In addition, after the memory area is expanded by using a memory page technique, the extended area may be used as a common memory area. In this method, an adjustment is required to share a bus between processors. The disadvantage is that the efficiency of data transfer between interfaces is reduced due to the problem that other processors cannot use it when occupying the bus.

Therefore, in the present invention, in order to solve the disadvantage that the use of the channel per board as described above, in the voice signal processing board to store the data required for recording or reproducing the voice data for voice mailbox or answering machine service for each channel It is an object of the present invention to provide an UnPBX device and a method of processing the same, which implement a memory buffer to process multi-channel voice data in real time.

In order to achieve the above object, the UnPBX device provided by the present invention stores server's voice data in an internal storage device to provide the voice mailbox service, and controls the recording and playback of voice data according to a subscriber's selection. And a memory buffer for storing data necessary for recording or reproducing the voice data for each channel, to deliver voice data of various subscribers through multiple channels to the server means in real time, and to reproduce the voice data reproduced by the server means. Voice data processing means for delivering to the multi-channel subscribers in real time, and in particular, the voice data processing means transmits / receives data through an interface with the server means, and the voice data transmitted from the server means and the Temporary voice data to be sent to the server means The device stores a common memory unit, a plurality of channel memory buffers for temporarily storing voice data to be recorded or reproduced for each channel, and performs signal processing on externally received voice data, and stores them in the corresponding channel memory buffer. A plurality of channel voice signal processing units for reading voice data to be reproduced through a channel of the channel from the memory buffer of the channel and transmitting the same to the channel, the common memory unit, a plurality of channel memory buffers, and a plurality of channel voice signal processing units The control unit is configured to control the control unit to transmit the voice data of the various subscribers through the multi-channel to the server means in real time, and to deliver the voice data reproduced by the server means to the multi-channel subscribers in real time.

On the other hand, in order to achieve the above object, the multi-channel voice data processing method of the UnPBX apparatus provided by the present invention comprises the steps of configuring a memory buffer for storing data necessary for recording or reproducing voice data in the voice data processing means for each channel; And real-time access of a common memory for temporarily storing transmission / reception data between the server means and the voice data processing means by the plurality of channel-specific memory buffers, and voice data of multiple subscribers through multiple channels by the real-time access. It consists of a process of processing in real time.

1 is a schematic configuration diagram of a conventional UnPBX device for providing a voice mail service;

2 is a schematic structural diagram of an UnPBX device for providing a voice mail service according to an embodiment of the present invention;

3 is a schematic structural diagram of a memory structure according to an embodiment of the present invention;

4 is a flowchart illustrating a method of storing voice data in an UnPBX device according to an embodiment of the present invention;

5 is a process flow diagram for a method for reproducing voice data of an UnPBX device according to an embodiment of the present invention;

<Description of the symbols for the main parts of the drawings>

100: server 110: auxiliary storage

120: main memory 130: control unit

200: voice signal processing board 210: common memory

220: memory buffer for each channel 230: voice signal processor for each channel

240: control unit

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

2 is a schematic configuration diagram of an UnPBX apparatus for providing a voice mailbox service according to an embodiment of the present invention, FIG. 3 is a schematic configuration diagram of a memory structure according to an embodiment of the present invention, and FIG. A flowchart of a method of storing voice data in an UnPBX device according to an embodiment of the present invention, and FIG. 5 is a flowchart of a method of reproducing voice data of an UnPBX device according to an embodiment of the present invention.

Referring to FIG. 2, the UnPBX apparatus for providing a voice mailbox service according to an embodiment of the present invention includes a server 100 implemented as a PC and a plurality of voices connected to expansion slots of a PC configuring the server 100. It consists of a signal processing board 200.

In this case, the server 100 may include an auxiliary memory device (HDD) 110 for storing voice data of subscribers and a main memory for temporarily storing data for data transmission / reception with the voice signal processing board 200. 120, and a control unit 130 for controlling the operation of the auxiliary memory device 110 and the main memory 120, and stores the voice data of the subscribers, the recording and playback of the voice data according to the subscriber's selection To control.

In addition, the voice signal processing board 200 stores a common memory 210 for transmitting / receiving data with the main memory 120 through an ISA interface and data necessary for recording or reproducing the voice data for each channel. A plurality of channel-specific memory buffers 220, a channel-specific voice signal processor 230 for processing recording or reproduction data stored in the common memory 210 by an interface with an external channel, the common memory 210, It is composed of a control unit 240 for controlling the operation of a plurality of channel-specific memory buffer 220 and a plurality of channel-specific voice signal processing unit 230, and delivers the voice data of the various subscribers through the multi-channel to the server means in real time The voice data reproduced by the server means is delivered to the multi-channel subscribers in real time.

3 is a schematic configuration diagram of a memory structure according to an embodiment of the present invention. Hereinafter, the configuration of the voice signal processing board 200 will be described in more detail with reference to FIGS. 2 and 3. .

First, the common memory 210 that transmits / receives data through the main memory 120 of the server 100 and the ISA interface is configured to transmit the voice data or the voice data transmitted from the server 100 for reproduction. A device for temporarily storing voice data to be transmitted to 100, 8KByte area per board is allocated as in the prior art, and a plurality of recording areas 212 and 213 for temporarily storing recording data to be transmitted to the server 100. And a plurality of playback areas 214 and 215 for temporarily storing playback data transmitted from the server 100, and data stored in the recording areas 212 and 213 and the playback areas 214 and 215. It is composed of a reserved area (211) for temporarily storing the processing instruction information for the plurality of channels are shared by the memory buffer 220 for each channel.

At this time, the recording areas 212 and 213 and the reproduction areas 214 and 215 each have a size of 1.5 KByte, and the reserved area 211 is 2 KByte.

Meanwhile, the plurality of channel-specific memory buffers 220 are devices for temporarily storing audio data to be recorded or reproduced for each channel, and include eight storage areas 221, 222, 223, 224, which each store 1.5 KByte of data. 225, 226, 227, and 228, which access the recording areas 212, 213 or the playback areas 214, 215 of the common memory 210 in real time and transmit them from the voice signal processor 230 of the corresponding channel. The voice data of the corresponding channel stored in the recording areas 212 and 213 of the common memory 210 and the voice data of the corresponding channel stored in the reproduction areas 214 and 215 of the common memory 210. Transmit to 230.

In addition, the voice signal processor 230 performs a signal processing on the voice data received from the outside to store in the memory buffer 220 of the channel, and to reproduce the voice data to be reproduced through any channel of the memory of the channel. A device that reads from the buffer 220 and transmits the data to the channel, and transmits the recording voice data received from the outside to be stored in the empty space of the memory buffer 220 for each channel or from the memory buffer 220 for each channel to the corresponding channel. And common buffers 231, 232, and 233 for temporarily storing voice data for reproduction.

The controller 240 controls the common memory 210, a plurality of channel-specific memory buffers 220, and a plurality of channel-specific voice signal processing units 230 to receive voice data of various subscribers through multiple channels in real time. And transmits the voice data reproduced in the server 100 to the multi-channel subscribers in real time.

That is, when a voice of a subscriber transmitted through an arbitrary channel is to be recorded, voice data of the corresponding subscriber received through the voice signal processor 230 for each channel is stored through the memory buffer 220 for each channel through the common memory ( If the control is to be stored in the empty space of 210, and the audio data stored in the server 100 is to be reproduced through an arbitrary channel, the reproduction data stored in the common memory 210 through the memory buffer 220 for each channel. Read to control the transmission to the voice signal processor 23 for each channel.

Referring to FIG. 3, in the case of voice data transmitted through an arbitrary channel for recording, an empty space of the channel-specific memory buffer 220 is temporarily stored in the common buffer area 232 of the channel-specific voice signal processor 230. In the case of the playback voice data transmitted from the server 100 to the recording area 212 of the common memory 210 through the first storage area 221, that is, After the temporary storage is performed in the listening area 215, an empty space of the channel-specific memory buffer 220, that is, the seventh storage area 227, is transmitted to the outside through the common buffer area 233 of the channel-specific voice signal processor 230. Is sent.

On the other hand, the method for processing voice data in real time through the UnPBX device of the present invention having the configuration as described above is a memory buffer for storing the data necessary for recording or playback of the voice data in the voice data processing board 200 for each channel ( After configuring 220, the plurality of channel-specific memory buffers 220 access the common memory 210 to temporarily store transmission / reception data between the server 100 and the voice data processing board 200 in real time. The voice data of the multiple subscribers through the multi-channel is processed in real time. A detailed method thereof is illustrated in FIGS. 4 and 5.

First, FIG. 4 is a flowchart illustrating a method of storing voice data in an UnPBX device according to an embodiment of the present invention. Referring to FIG. 4, when a user wants to record voice of a subscriber transmitted through an arbitrary channel, the server ( If a recording command is generated in step 100 (s401), after initializing the memory buffer for each channel (s402), and waiting for receiving recording data from the outside (s403), the received recording data is stored in the memory buffer for each channel. (s404).

In operation S405, the recording data stored in the memory buffer for each channel is transferred to an empty place of the recording area of the common memory, and the contents stored in the common memory are stored in the storage device of the server 100 (s406).

In addition, the server 100 repeatedly performs the above-described process (s403 to s406) until the recording end command occurs, and when the recording end command is generated from the server 100 (s407), the recording end command is input to the voice signal processor. Notify (s408).

Then, the remaining data of the memory buffer for each channel is stored in the storage device of the server 100 through the common memory (S409), and then the recording process is terminated (S410).

FIG. 5 is a flowchart illustrating a method of reproducing voice data of an UnPBX device according to an embodiment of the present invention. Referring to FIG. 5, when the voice data stored in the server is to be reproduced through an arbitrary channel, the server may be used. When a playback command is generated in S501, the memory buffer for each channel is initialized (s502), and then the playback data area of the common memory is monitored (s503).

When the common memory is monitored (s503), if there is playback data transmitted from the server in the playback data area of the common memory (s504), the playback data is stored in the memory buffer for each channel (s505) and then the memory buffer for each channel Is reproduced through the audio signal processing for each channel (s506).

Then, the above-described series of processes s503 to s506 are repeatedly performed until a reproduction end command is generated from the server or the voice data processing board.

On the other hand, when a reproduction end command is generated from the server or the voice data processing board (s507), the terminal determines whether the termination command is generated (s510), and when the termination command is generated at the server (s511), it is stored in the reproduction area of the common memory. After all of the reproduction data have been processed, the reproduction end command is notified to the voice data processing means to terminate the reproduction process (S512).

If a reproduction end command is generated in the voice data processing board, the server terminates the reproduction process after notifying the reproduction end command to the server means (S513).

On the other hand, when the playback data stored in the common memory is to be transmitted to the empty space of the memory buffer for each channel, first, the empty space of the memory buffer for each channel is checked (s508), and the empty space of a predetermined area or more in the memory buffer for each channel If this is not secured, transmission of the reproduction data stored in the common memory is suspended until an empty space of the predetermined area or more is secured (s509).

That is, when there are not more than two empty spaces of the memory buffer for each channel, the controller of the voice data processing board transmits a signal FULL indicating that there is no free space in the memory buffer for each channel to the server side, and for each channel. When there are two or more free spaces in the memory buffer, the controller of the voice data processing board transmits a signal FREE indicating that there is free space in the memory buffer for each channel to the server.

Then, the controller of the server recognizes the signal, and when the signal FREE indicating that there is a free space is transmitted from the voice data processing board side, the controller transmits the reproduction data to the memory buffer for each channel, and processes the voice data. If a signal (FULL) is sent to the board that indicates that there is no free space, wait until a signal (FREE) occurs indicating that there is free space in the memory buffer for each channel before transmitting the corresponding data.

As described above, the apparatus and method of the present invention enable real-time transmission of multi-channel voice data of 4 channels or more using a limited common memory of a PC server ISA interface expansion slot, and a memory buffer for each channel added to the voice data processing board. By adjusting the capacity of the software, there is an advantage that the processing capacity can be freely adjusted.

Claims (10)

In the UnPBX device that receives a trunk line from a public switched telephone network to provide voice mailbox service to subscribers, Server means for storing voice data of subscribers in an internal storage device for providing the voice mailbox service and controlling recording and reproduction of voice data according to a subscriber's selection; It includes a memory buffer for storing the data necessary for recording or reproducing the voice data for each channel to deliver the voice data of the multiple subscribers through the multi-channel to the server means in real time, and the voice data reproduced in the server means in real time An UnPBX apparatus for real-time processing of multi-channel voice data, comprising: voice data processing means for delivering to multi-channel subscribers. The method of claim 1, wherein the voice data processing means A common memory unit for transmitting / receiving data through an interface with the server means, and temporarily storing voice data transmitted from the server means and voice data to be transmitted to the server means; A plurality of channel memory buffers for temporarily storing voice data to be recorded or played back for each channel; Performs signal processing on the voice data received from the outside and stores them in the corresponding channel memory buffer, and reads the voice data to be reproduced through an arbitrary channel from the memory buffer of the corresponding channel and transmits them to the channel. Processing unit, Controlling the common memory unit, a plurality of channel-specific memory buffers, and a plurality of channel-specific voice signal processing units to deliver voice data of multiple subscribers through multiple channels to the server means in real time, and to reproduce the voice data reproduced by the server means. An UnPBX apparatus for real-time processing of multi-channel voice data, characterized in that the control unit for controlling to deliver to the multi-channel subscribers in real time. The method of claim 2, wherein the common memory unit A plurality of recording areas for temporarily storing recording data to be transmitted to the server means; A plurality of reproduction areas for temporarily storing reproduction data transmitted from the server means; A reservation area for temporarily storing processing instruction information for data stored in the recording area and the reproduction area, UnPBX device for real-time processing multi-channel voice data, characterized in that shared by the plurality of channel-specific memory buffers. The memory buffer of claim 2, wherein the channel-specific memory buffer Consists of a number of storage areas for storing data of unit length, Approaching the recording area or the playback area of the common memory unit in real time, the voice data transmitted from the voice signal processor of the corresponding channel is stored in the recording area of the common memory unit, and the voice data of the corresponding channel stored in the playback area of the common memory unit UnPBX device for processing multi-channel voice data in real time, characterized in that for transmitting to the voice signal processor of the channel. The voice signal processor of claim 2, wherein the voice signal processor for each channel is used. And a common buffer configured to temporarily store recording voice data received from the outside and stored in an empty space of the memory buffer for each channel, and for reproducing voice data for transmission from the memory buffer for each channel to the corresponding channel. UnPBX device that processes multi-channel voice data in real time. The method of claim 2, wherein the control unit When recording the voice of the subscriber transmitted through an arbitrary channel, control to store the voice data of the subscriber received through the voice signal processor for each channel in the empty space of the common memory through the memory buffer for each channel, When the voice data stored in the server means is to be reproduced through any channel, the control unit for controlling to read the reproduction data stored in the common memory through the memory buffer for each channel to transmit to the voice signal processor for each channel UnPBX device that processes multi-channel voice data in real time. Server means for storing voice data of subscribers in an internal storage device and controlling recording and reproducing of the voice data according to a subscriber's selection, and performing voice processing on the voice data for recording or reproducing under control of the server means. In the voice data processing method of the UnPBX device configured to perform voice data processing means for providing subscribers voice mail service, A memory buffer for storing data necessary for recording or reproducing voice data in the voice data processing means for each channel, The plurality of channel-specific memory buffers access in real time a common memory for temporarily storing transmission / reception data between the server means and the voice data processing means. A method for processing real-time multichannel voice data of an UnPBX device, which processes voice data of several subscribers through multiple channels in real time. The method of claim 7, wherein the multi-channel voice data processing method of the UnPBX device is performed. If you want to record the subscriber's voice transmitted through any channel, A first process of initializing the channel-specific memory buffer when a recording command is generated by the server means; A second process of storing externally received recording data in the memory buffer for each channel; A third step of finding an empty place among the recording areas of the common memory and transmitting the recording data stored in the memory buffer for each channel; A fourth step of storing the recorded data stored in the common memory in a storage device of the server means; A fifth process of repeating the second process to the fourth process until a recording stop command occurs in the server means; A sixth step of notifying the voice data processing means of the recording end command generated by the server means; And storing the remaining data of the memory buffer for each channel in the storage device of the server means through the common memory and ending the recording process. The method of claim 7, wherein the multi-channel voice data processing method of the UnPBX device is performed. In case that the voice data stored in the server means is to be reproduced through an arbitrary channel, A first process of initializing the channel-specific memory buffer when a play command is generated in the server means; A second step of monitoring a reproduction area of the common memory and storing the reproduction data transmitted from the server means in the reproduction area of the common memory in a memory buffer for each channel; Reproducing the contents of the channel-specific memory buffer; A fourth process of repeating the second process and the third process until a reproduction end command is generated from the server means or the voice data processing means; A fifth process of processing all the reproduction data stored in the reproduction area of the common memory when the reproduction end command is generated by the server means, and notifying the reproduction end command to the voice data processing means to terminate the reproduction process; And a sixth process of notifying the server means of the reproduction end command when the reproduction end command is generated by the voice data processing means to terminate the reproduction process. The method of claim 9, wherein the second process If the free space of the memory buffer for each channel is not determined and the free space of the predetermined area is not secured, the transmission of the reproduction data stored in the common memory is suspended until the free space of the predetermined area is secured. Real-time multi-channel voice data processing method of the UnPBX device.