KR101174349B1 - System for playing audio data - Google Patents

Abstract

PURPOSE: An audio data reproducing system is provided to delete and store audio data in parallel using a message queue when the audio data are stored. CONSTITUTION: A second audio data processing unit extracts and records audio data, stored in a message queue, in at least one flash which is selected from a flash package. The second audio data processing unit deletes data which are recorded in at least one flash which is not selected from the flash package. An audio data transmitting unit(310) transmits recorded audio data to a TCP socket. An audio data reproducing unit(320) receives the recorded audio data using a TCP socket. The audio data reproducing unit reproduces the received audio data.

Description

Voice data playback system {System for playing audio data}

The present invention relates to a system for reproducing real-time stored voice data.

Recently, the black box system has been developed in various fields such as aviation and ships. The most important function of such a black box system is how to manage and store data efficiently. However, since voice data has continuous signal characteristics, the storage speed greatly affects the storage speed. If the voice data cannot be processed at regular intervals, the sound quality is greatly degraded.

On the other hand, the flash can be stored only if the sector area to be stored is deleted before storing. Therefore, when data is stored in the flash memory, the data is stored and then stored. However, since the deletion speed is slower than the storage speed, it takes a lot of time to store the data, so it is very difficult to store the voice data in the flash in real time.

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above problems, and a voice data storage device and method for processing data deletion and storage in parallel using a message queue when storing voice data, and a voice data reproducing system are provided. For the purpose of suggestion.

The present invention has been made to achieve the above object, the first voice data processing unit for storing voice data in a message queue (Message Queue); And extracting and recording voice data stored in the message queue into at least one selected flash selected from a flash package including flashes when the voice data can be processed, and to at least one unselected flash not selected from the flash package. A voice data storage device comprising a second voice data processor for deleting recorded data.

Preferably, the second voice data processing unit, a message queue generating unit for generating the message queue; A message queue obtaining unit obtaining voice data stored in the message queue; A data deletion unit for performing the deletion in units of sectors or blocks of the unselected flash based on an input command; A data recording unit which performs the recording in the same unit as the deletion while increasing the offset when the deletion is performed; An offset determination unit that determines whether the offset is equal to or greater than a reference value each time the recording is performed; And an offset processing unit for reselecting the selected flash from the flash package if it is equal to or greater than a reference value, and controlling the recording to be performed again if it is not equal to or greater than the reference value.

Preferably, the second voice data processing unit performs the recording and the deletion at the same time, each recording and the deletion for the same number of flashes, or whenever the voice data is stored in the message queue. The recording and the deletion are performed in real time.

Preferably, the first voice data processing unit includes: a message queue handle obtaining unit obtaining a message queue handle associated with the message queue when the message queue is created; A memory allocator configured to allocate memory to the message queue based on the message queue handle; A voice data acquisition unit for acquiring voice data; A voice data compression unit for compressing the obtained voice data; A voice data determination unit that determines whether to continue to store the compressed voice data based on the input command; And a voice data storage unit for storing the contents of the compressed voice data in a memory-allocated message queue if the storage target is to be continuously stored, and storing information on the voice data stored in the message queue if the storage target is no longer stored.

The present invention also provides a method for processing voice data, comprising: a first voice data processing step of storing voice data in a message queue; And extracting and recording voice data stored in the message queue into at least one selected flash selected from a flash package including flashes when the voice data can be processed, and to at least one unselected flash not selected from the flash package. And a second voice data processing step of deleting the recorded data.

Advantageously, said second voice data processing step comprises: a message queue generation step of generating said message queue; A message queue obtaining step of obtaining voice data stored in the message queue; A data deletion step of performing the deletion on a sector basis or a block basis constituting the unselected flash based on an input command; A data recording step of performing the recording in the same unit as the deletion while increasing the offset when the deletion is performed; An offset determination step of discriminating whether or not the offset is equal to or greater than a reference value each time the recording is performed; And an offset processing step of reselecting the selection flash from the flash package if it is equal to or greater than a reference value, and controlling the recording to be performed again if it is not equal to or greater than the reference value.

Preferably, the second voice data processing step is performed when the recording and the deletion are performed simultaneously, the recording and the deletion are respectively performed for the same number of flashes, or when the voice data is stored in the message queue. The recording and the deletion are performed in real time every time.

Preferably, the first voice data processing step includes: a message queue handle obtaining step of obtaining a message queue handle associated with the message queue when the message queue is created; A memory allocation step of allocating memory to the message queue based on the message queue handle; Obtaining voice data; A speech data compression step of compressing the obtained speech data; A voice data determination step of determining whether to continue to store the compressed voice data based on the input command; And storing the contents of the compressed voice data in a memory-allocated message queue if the storage target is to be stored, and storing information on the voice data stored in the message queue if the storage target is no longer a storage target.

The present invention also provides a first voice data processor for storing voice data in a message queue; When the voice data can be processed, voice data stored in the message queue is extracted and recorded in at least one selected flash selected from a flash package including flashes, and recorded in at least one unselected flash not selected from the flash package. A second voice data processor which deletes the data; A voice data transmitter for transmitting the recorded voice data to a TCP socket; And a voice data reproducing unit for receiving the recorded voice data using the TCP socket and reproducing the received voice data.

Preferably, the voice data transmitter comprises: a TCP socket processor configured to configure the TCP socket for transmitting the recorded voice data to the voice data reproducing unit; A condition discriminating unit configured to first determine whether the recorded speech data meets a predetermined condition based on the information on the recorded speech data; A voice data extraction unit for extracting the recorded voice data in sector units or block units from a flash on which voice data is recorded while increasing an offset if the condition is met; A transmitter for transmitting the extracted voice data to a configured TCP socket; An offset comparison unit for secondly determining whether the offset is equal to or greater than a reference value each time the transmission by the transmission unit is performed; And if the reference value is equal to or greater than the reference value, the first determination is performed again after changing the sector or block for extraction until there is no more voice data to extract; And a determination performing control unit controlling to perform the first determination again.

Preferably, the voice data reproducing unit, the TCP socket connection unit for performing a connection with the configured TCP socket when the TCP socket is configured by the voice data transmission unit; A voice data receiver configured to receive and store the recorded voice data from the configured TCP socket when the connection is performed; A TCP socket deletion unit for deleting the configured TCP socket when the reception is completed; A sound device generator for generating a sound device for performing the playback; A decoding unit for decoding the stored voice data; And a sound device driving control unit which sets a reproduction position for the reproduction and reproduces the decoded voice data at the reproduction position set through the generated sound device.

The present invention can obtain the following effects. First, by using the message queue when storing the voice data, the voice data can be stably stored in the flash memory. Second, by deleting and storing data in parallel, the time taken to store the voice data can be shortened, and real-time storage of the voice data is also possible.

1 is a block diagram schematically illustrating a voice data storage device according to a preferred embodiment of the present invention.
2 is a block diagram specifically showing a module constituting the voice data storage device.
3 is a block diagram schematically showing a voice data reproducing system according to a preferred embodiment of the present invention.
4 is a block diagram specifically showing a module constituting the voice data reproducing system.
5 is a block diagram schematically illustrating a flash storage system according to an exemplary embodiment.
6 is a flowchart illustrating a data acquisition and compression process of the data acquisition and compression module.
7 is a reference diagram for explaining a voice storage method of the voice storage module.
8 is a flowchart illustrating a voice storage process of the voice storage module.
9 is an exemplary view of a voice storage system.
10 is a configuration diagram of the voice storage system explaining the main functions of the voice storage system.
11 is a flowchart related to a data transmission method of a data transmission module.
12 is a flowchart related to a voice reproducing method of the voice reproducing module.
13 is experimental result data for a flash storage system.
14 is a flowchart schematically showing a method of storing voice data according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the following will describe a preferred embodiment of the present invention, but the technical idea of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art.

1 is a block diagram schematically illustrating a voice data storage device according to a preferred embodiment of the present invention. 2 is a block diagram specifically showing a module constituting the voice data storage device. The following description refers to FIGS. 1 and 2.

According to FIG. 1, the voice data storage device 100 includes a first voice data processor 110, a second voice data processor 120, a power supply unit 130, and a first main controller 140.

The first voice data processing unit 110 stores the voice data in a message queue. As shown in FIG. 2A, the first voice data processor 110 may include a message queue handle acquirer 111, a memory allocator 112, a voice data acquirer 113, and a voice data compressor 114. ), A voice data determination unit 115 and a voice data storage unit 116.

When the message queue is generated by the second voice data processing unit 120, the message queue handle obtaining unit 111 acquires a message queue handle related to the message queue. The memory allocator 112 performs a function of allocating memory to the message queue based on the message queue handle.

Meanwhile, the voice data acquisition unit 113 performs a function of obtaining voice data. The voice data compressor 114 performs a function of compressing the obtained voice data. The voice data determination unit 115 determines whether to continue to store the compressed voice data based on the input command. If the compressed voice data continues to be stored, the voice data storage unit 116 stores the contents of the compressed voice data in a memory allocated message queue. On the other hand, if the compressed voice data is no longer a storage target, the voice data storage unit 116 stores the information on the voice data stored in the message queue.

When the voice data stored in the message queue can be processed, the second voice data processor 120 performs a function of extracting and recording the voice data into at least one selected flash selected from a flash package including flashes. In this case, the second voice data processor 120 deletes data recorded in the unselected flash for at least one unselected flash not selected from the flash package. One flash may be divided into a plurality of blocks, and each block may be divided into a plurality of sectors. The second voice data processor 120 may record or delete voice data in units of sectors or blocks.

The second voice data processor 120 may simultaneously perform data recording and data deletion. Alternatively, the second voice data processor 120 may perform data recording and data deletion on the same number of flashes, respectively. Alternatively, the second voice data processor 120 may perform data recording and data deletion in real time whenever the voice data is stored in the message queue. In view of this function of the second voice data processor 120, the second voice data processor 120 may include a message queue generator 121 and a message queue acquirer 122 as shown in FIG. 2B. The data deleting unit 123, the data recording unit 124, the offset determining unit 125, and the offset processing unit 126 may be included.

The message queue generating unit 121 performs a function of generating a message queue. The message queue acquisition unit 122 performs a function of acquiring voice data stored in the message queue. The data deleting unit 123 deletes data in sector units or block units of the unselected flash based on the input command. When data deletion is performed by the data deletion unit 123, the data recording unit 124 performs data recording in units of sectors or blocks of the selected flash while increasing an offset. In this embodiment, data deletion and data recording apply the same unit. For example, if the data deletion unit 123 performs data deletion in sector units, the data recording unit 124 also performs data recording in sector units. The offset determination unit 125 performs a function of determining whether the offset is equal to or greater than the reference value each time data recording is performed. If it is determined that the offset is greater than or equal to the reference value, the offset processing unit 126 performs a function of reselecting the selection flash from the flash package. On the other hand, if it is determined that the offset is less than the reference value, the offset processing unit 126 performs a function of controlling data recording to be performed again.

The power supply unit 130 supplies power to each unit (module) constituting the voice data storage device 100.

The first main control unit 140 performs a function of controlling the overall operation of each module constituting the voice data storage device 100.

3 is a block diagram schematically showing a voice data reproducing system according to a preferred embodiment of the present invention. 4 is a block diagram specifically showing a module constituting the voice data reproducing system. The following description refers to FIGS. 3 and 4.

According to FIG. 3, the voice data reproducing system 300 includes a voice data storage device 100, a voice data transmitting unit 310, a voice data reproducing unit 320, and a second main control unit 330.

The voice data transmitter 310 transmits the voice data recorded by the voice data storage device 100 to the TCP socket. As shown in FIG. 4A, the voice data transmitter 310 includes a TCP socket processor 311, a condition determiner 312, a voice data extractor 313, a transmitter 314, and an offset comparator. 315 and the determination performing control unit 316.

The TCP socket processing unit 311 performs a function of configuring a TCP socket for transmitting voice data to the voice data reproducing unit 320. The condition determining unit 312 performs a first function of determining whether the voice data meets a predetermined condition based on the information on the voice data. If it is determined that the voice data meets the condition, the voice data extracting unit 313 performs a function of extracting the voice data in units of sectors or blocks from the flash on which the voice data is recorded while increasing the offset. The transmitter 314 transmits the extracted voice data to the configured TCP socket. On the other hand, if it is determined that the voice data does not meet the condition, the voice data extraction unit 313 may cancel the voice data transmission to the voice data reproducing unit 320 by deleting the TCP socket.

The offset comparison unit 315 performs a second function of determining whether the offset is equal to or greater than a reference value each time data transmission by the transmission unit 314 is performed. If it is equal to or greater than the reference value, the determination performing control unit 316 changes the sector or block for data extraction and controls the first determination to be performed again until there is no more voice data to extract. On the other hand, if it is not equal to or greater than the reference value, the determination performing control unit 316 performs a function of controlling the first determination to be performed again until there is no more voice data to be extracted without the change.

The voice data reproducing unit 320 receives voice data through the voice data transmitting unit 310 by using a TCP socket and performs a function of reproducing the received voice data. The voice data reproducing unit 320 includes a TCP socket connection unit 321, a voice data receiving unit 322, a TCP socket deleting unit 323, a sound device generating unit 324, and decoding as shown in FIG. 4B. The unit 325 and the sound device driving control unit 326 may be included.

When the TCP socket is configured by the voice data transmission unit 310, the TCP socket connection unit 321 performs a function of performing a connection with the configured TCP socket. When the connection is made, the voice data receiver 322 performs a function of receiving and storing voice data from the configured TCP socket. When the data reception is finished, the TCP socket deleting unit 323 deletes the configured TCP socket. The sound device generation unit 324 performs a function of generating a sound device for reproducing voice data. The decoding unit 325 performs a function of decoding the stored voice data. The sound device driving control unit 326 sets a playback position for data reproduction and performs a function of playing the decoded voice data at the playback position set through the generated sound device.

Next, an embodiment of the voice data storage device 100 and the voice data reproduction system 300 will be described. The voice storage system is an embodiment of the voice data storage device 100, and stores voice data acquired by a black box system in a flash memory in real time. Since voice data has continuous signal characteristics, the storage speed greatly affects the storage speed. However, since flash can be stored only when the sector area to be stored is deleted before storage, and the data deletion speed is slower than the data storage speed, it is very difficult to store voice data in the flash in real time. The voice storage system is to solve this problem. The data storage and data deletion process is performed in parallel to reduce the time required for data deletion and to stably store data by using a message queue between the voice acquisition module and the voice storage module. . When the voice storage system is applied to the flash storage system, the experimental results show that there is almost no difference in sound quality between the voice stored by the voice storage system and the original voice. The flash storage system is an embodiment of the voice data playback system 300.

5 is a block diagram schematically illustrating a flash storage system according to an exemplary embodiment. According to FIG. 5, the flash storage system 500 includes a data acquisition and compression module 510, a voice storage module 520, a data transmission module 530, and a voice reproduction module 540. The voice storage system includes a data acquisition and compression module 510 and a voice storage module 520.

The data acquisition and compression module 510 acquires data from McASP and compresses the obtained data to 32 kbps of G.726. Data acquisition acquires 1024 bytes per channel, and the obtained data is compressed to 512 bytes. The compressed data is sent to the message queue for delivery to the audio storage module. The data acquisition and compression module 510 corresponds to the first voice data processing unit 110.

6 is a flowchart illustrating a data acquisition and compression process of the data acquisition and compression module 310. Operation S610 is related to a function performed by the message queue handle acquisition unit 111, and operation S620 is related to a function performed by the memory allocator 112. Operation S630 is related to a function performed by the voice data acquisition unit 113, and operation S640 is related to a function performed by the voice data compression unit 114. Step S650 is a step for determining whether to store data. If yes, the message is put in the message queue and transmitted to the voice storage module 520 to store data in the flash. On the other hand, if No, the address used so far is recorded in the EEPROM. The reason for this is to find out where you saved the flash later. The data transmission module 530 obtains the start address and the stop address from the EEPROM, finds the used area, and acquires and transmits the data in the flash.

This will be described with reference to FIG. 5 again.

The voice storage module 520 generates a message and obtains voice data from the generated message. Eight flashes are divided into four to store voice data. Voice data acquired from channel 1 is stored in flash 1 ~ 4. As shown in FIG. 7, four flashes are grouped into two and divided into an upper flash 710 and a lower flash 720. The upper flash 710 and the lower flash 720 are distinguished from each other when the upper flash 710 is storing data, and the lower flash 720 processes deletion and storage in parallel by performing deletion. Every flash alternately stores data in sectors. The voice storage module 520 has a configuration corresponding to the second voice data processor 120.

8 is a flowchart illustrating a voice storage process of the voice storage module 520. The message queue is used for data transfer between the data acquisition and compression module 510 and the voice storage module 520. Accordingly, message queue initialization is completed by allocating a message queue in the data acquisition and compression module 510 and generating a message in the voice storage module 520 (S810).

When the data acquisition and compression module 510 stores the message queue (MSGQ_put ()), the voice storage module 520 acquires the message queue (MSGQ_put ()) (S820). If the data acquisition and compression module 510 does not put data in the message queue, the part that acquires the message queue waits for data to enter (Pending state). If the data comes in, check the Exchange flag (S830). The Exchange flag is a flag that tells you whether you want to change the upper flash (for example, 1 or 2 flash) and the lower flash (for example, 3 or 4 flash). For example, if Exhange is 1, the lower flash deletes the corresponding sector and the upper flash stores data in the corresponding sector (S840). Data storage stores data alternately in units of 64 bytes (S850). The sector offset informs whether to replace the flash (S860). If the sector offset is greater than 0xffff, it must be stored in another sector. This is because the size that can be stored in one sector is 0xffff (128kbyte). If the sector offset is 0xffff or more, Exchange is set to 1 to replace the upper flash and the lower flash (S870). If the sector offset is less than 0xffff, it waits for data to enter the message queue.

As described above, the data acquisition and compression module 510 and the voice storage module 520 are modules constituting the voice storage system. The voice storage system 900 may include a control board 910 and a flash storage memory board 920 as shown in FIG. 9A. The control board 910 is a configuration corresponding to the data acquisition and compression module 510. As shown in FIG. 9 (b), the control board 910 includes an AIC33 (911) for converting analog speech into digitized speech from an input terminal, McASP 912. The obtained voice data is stored in a flash 921 of the memory board 920 through a flexible cable 913 as shown in FIG. 9C. At this time, the EEPROM 915 stores start and end addresses related to the data. 10 is a configuration diagram of the voice storage system explaining the main functions of the voice storage system.

The control board 910 acquires the digital voice data from the analog voice to the AIC33 911 and the McASP 912 of the DSP. The obtained data is compressed to 32 kbps of G.726, and the compressed data is stored in the flash 921 of the memory board 920.

The flash storage memory board 920 is connected to the control board 910 by a flexible cable 913 to store the compressed data. Flash data storage is to change all values from 0xFFFF to the corresponding bit value 0 and save. Therefore, before the flash can be saved, it must be deleted before it can be saved. The flash execution speed requires 480 ms to execute 64 bytes, and 0.5 sec to erase one sector. A flash may perform a save function on another flash while one flash is performing an erase function.

This will be described with reference to FIG. 5 again.

The data transmission module 530 acquires data stored in the same manner in the voice storage module 520 and transmits the obtained data to the TCP socket. 11 is a flowchart related to a data transmission method of the data transmission module 530.

Since the data transmission module 530 transmits data through Ethernet, first, the TCP socket is initialized (S1110). When the initialization is completed, the start address and the stop address are obtained from the EEPROM (S1120). The data in the flash is taken until the start address and the stop address are the same (S1130). Flash, Sector, and Sector offsets are stored in start address and stop address. Check whether the flash value is the upper flash (for example, 1 and 2 flashes) at the start address (S1140). If the upper flash is Yes, the data is acquired in units of 64 bytes while alternately transferring the sectors from the upper flash (S1150), and the data is transmitted to the Ethernet (S1160). Here, if the sector offset is equal to or greater than 0xffff (S1170), the flash is changed to a lower flash (for example, 3 and 4 flashes) (S1180). Change start Address and repeat until it is same as Stop Address. If the start address and the stop address are the same, the start address is updated in the EEPROM and the TCP socket is deleted (S1190).

This will be described with reference to FIG. 5 again.

The voice reproduction module 540 receives voice data using a TCP socket and stores it as a file. The stored file is read in 320bytes and decoded in G.726 32kbps. The decoded data is played back to the speaker using low level wave play. 12 is a flowchart related to a voice reproducing method of the voice reproducing module 540.

Initialize the TCP socket (S1210). The data transmitted from the data transmission module 530 is received and stored in a file (S1220). When the saving is completed, the TCP socket is deleted (S1230). Initialize the sound device and initialize the G.726 compression codec (S1240). The voice file is read and decoded to G.726 (S1250), and the decoded PCM voice data is transmitted to the DMA of the sound card to output voice (S1260). When the output is completed, the playback position is changed for another DMA transfer (S1270). This plays all the files using the sound card.

Experiments using the flash storage system according to Figure 5 results and analysis are as follows. The specifications of the system used in this experiment are as follows.

■ voice storage system

-TMS320DM648 900Mhz 7200 MIPS / MFLOPS

-1 Gigabit Flash Memory

-TMS320C6000 DSP / BIOS 5.31

CCStudio v3.3

■ playback system

-Intel Core ^TM 2 Duo CPU T9550 @ 2.66GHz

RAM 2.67 GHz, 2.96 GB

-Windows XP Professional K Version 2002

Visual C ++ 6.0

Similar waveforms were confirmed by comparing the waveform of the original audio (FIG. 13A) with the waveform of the stored audio (FIG. 13B) using the system. Fig. 13 (a) The audio was compressed to G.726 32 kbps, and it was confirmed that the waveform was different due to the quantization error generated by the decoding. However, when the two audios were played to several people, they were evaluated to sound similar.

(C) and (d) of FIG. 13 are measured using speech of a person who is not a complex voice, unlike (a) and (b) of FIG. Since human speech is monotonous in frequency, we can see that the original voice and the stored voice are very similar. 13 (a) and 13 (b) show that quantization errors occur more when compressed because audio frequencies are complicated. However, if you hear it in the human ear, it has a characteristic that sounds similar even though there are many quantization errors.

As described above, the flash storage system stores the data obtained by the black box system in the flash memory in real time. The flash storage system controls intermodule synchronization by using message queues between the voice capture module and the voice storage module. In order to efficiently store voice data, the respective flashes are processed in parallel to be stored while being deleted. Stored voice data is transmitted to other equipment using TCP socket, and the transmitted data is reproduced using low level wave playback program. As a result of experimenting with this flash storage system, the sound quality is similar to the original voice and the stored voice.

Next, the voice data storage method of the voice data storage device 100 will be described. 14 is a flowchart schematically showing a method of storing voice data according to a preferred embodiment of the present invention. The following description refers to FIG. 14.

First, voice data is stored in a message queue (first voice data processing step, S10).

The first voice data processing step S10 may include a message queue handle acquisition step, a memory allocation step, a voice data acquisition step, a voice data compression step, a voice data determination step, a voice data storage step, and the like. In this case, the step of obtaining a message queue handle refers to a step of acquiring a message queue handle related to the message queue after the message queue is created. The memory allocating step means allocating memory to the message queue based on the message queue handle. Acquiring voice data means acquiring voice data. The speech data compressing step means compressing the obtained speech data. The voice data determination step means determining whether to continue to store the compressed voice data based on the input command. The voice data storing step stores the contents of the compressed voice data in a memory-allocated message queue when the compressed voice data is still a storage target, and stores the contents of the compressed voice data in the message queue when the compressed voice data is no longer a storage target. It means the step of storing the information.

After the first voice data processing step (S10), when processing of the voice data stored in the message queue is possible, voice data is extracted and recorded in at least one selected flash selected from a flash package including flashes, and not selected from the flash package. The data recorded in the at least one unselected flash is deleted (second voice data processing step, S20).

The second voice data processing step S20 may simultaneously perform data recording and data deletion. Alternatively, in the second voice data processing step S20, data recording and data deletion may be performed for the same number of flashes, respectively. Alternatively, the second voice data processing step S20 may perform data recording and data deletion in real time whenever the voice data is stored in the message queue.

The second voice data processing step S20 may be embodied as a message queue generation step, a message queue acquisition step, a data deletion step, a data recording step, an offset determination step, and an offset processing step. The message queue creation step refers to a step of creating a message queue. The message queue acquiring step refers to acquiring voice data stored in the message queue. The data erasing step refers to a step of performing data deletion on a sector basis or a block basis of the unselected flash based on the input command. The data recording step refers to a step of performing data recording in the same unit as that of data deletion while increasing the offset when data deletion is performed. The offset determination step means determining whether or not the offset is equal to or greater than the reference value each time data recording is performed. The offset processing step means reselecting the selection flash from the flash package when the offset is greater than or equal to the reference value, and controlling the data recording to be performed again when the offset is less than the reference value.

The present invention can be used for military aviation integrated recording devices such as aviation black box systems or VFDR (Variable Flow Ducted Rocket).

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: voice data storage device 110: first voice data processing unit
111: message queue handle acquisition unit 112: memory allocation unit
113: voice data acquisition unit 114: voice data compression unit
115: voice data determination unit 116: voice data storage unit
120: second voice data processing unit 121: message queue generation unit
122: message queue acquisition unit 123: data deletion unit
124: data recording unit 125: offset determination unit
126: offset processing unit 300: voice data playback system
310: voice data transmission unit 311: TCP socket processing unit
312: condition determining unit 313: voice data extracting unit
314: transmission unit 315: offset comparison unit
316: Determination performing control unit 320: Voice data reproducing unit
321: TCP socket connection unit 322: voice data receiver
323: TCP socket deletion unit 324: Sound device generation unit
325: decoding unit 326: sound device driving control unit

Claims (2)

A first voice data processor for storing voice data in a message queue;
When the voice data can be processed, voice data stored in the message queue is extracted and recorded in at least one selected flash selected from a flash package including flashes, and recorded in at least one unselected flash not selected from the flash package. A second voice data processor which deletes the data;
A voice data transmitter for transmitting the recorded voice data to a TCP socket; And
Receiving the recorded voice data by using the TCP socket, reproducing the received voice data, when the TCP socket is configured by the voice data transmission unit, TCP socket connection unit for performing a connection with the configured TCP socket ; A voice data receiver configured to receive and store the recorded voice data from the configured TCP socket when the connection is performed; A TCP socket deletion unit for deleting the configured TCP socket when the reception is completed; A sound device generator for generating a sound device for performing the playback; A decoding unit for decoding the stored voice data; And a sound device driving controller configured to set a play position for the play and to play the decoded voice data at the play position set through the generated sound device.
Voice data playback system comprising a. The method of claim 1,
The voice data transmission unit,
A TCP socket processing unit constituting the TCP socket for transmitting the recorded voice data to the voice data reproducing unit;
A condition discriminating unit configured to first determine whether the recorded speech data meets a predetermined condition based on the information on the recorded speech data;
A voice data extraction unit for extracting the recorded voice data in sector units or block units from a flash on which voice data is recorded while increasing an offset if the condition is met;
A transmitter for transmitting the extracted voice data to a configured TCP socket;
An offset comparison unit for secondly determining whether the offset is equal to or greater than a reference value each time the transmission by the transmission unit is performed; And
If the reference value is equal to or greater than the reference value, the first determination is performed again after changing the sector or block for extraction until there is no more voice data to extract, and if it is not equal to the reference value until there is no more voice data to extract without the change. A determination performing control unit controlling the first determination to be performed again
Voice data playback system comprising a.

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