WO2015108258A1 - Fat 파일 시스템, 이를 이용하는 차량용 멀티미디어 데이터 저장 장치 및 그 방법 - Google Patents

Fat 파일 시스템, 이를 이용하는 차량용 멀티미디어 데이터 저장 장치 및 그 방법 Download PDF

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Publication number
WO2015108258A1
WO2015108258A1 PCT/KR2014/007466 KR2014007466W WO2015108258A1 WO 2015108258 A1 WO2015108258 A1 WO 2015108258A1 KR 2014007466 W KR2014007466 W KR 2014007466W WO 2015108258 A1 WO2015108258 A1 WO 2015108258A1
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WO
WIPO (PCT)
Prior art keywords
file
data
file system
fat
recording
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PCT/KR2014/007466
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English (en)
French (fr)
Korean (ko)
Inventor
이동경
Original Assignee
주식회사 엠티오메가
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Application filed by 주식회사 엠티오메가 filed Critical 주식회사 엠티오메가
Priority to JP2016564928A priority Critical patent/JP6336618B2/ja
Publication of WO2015108258A1 publication Critical patent/WO2015108258A1/ko

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
    • G06F12/0866—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches for peripheral storage systems, e.g. disk cache
    • G06F12/0871—Allocation or management of cache space
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1415—Saving, restoring, recovering or retrying at system level
    • G06F11/1435—Saving, restoring, recovering or retrying at system level using file system or storage system metadata

Definitions

  • the present invention relates to a FAT file system, a vehicle multimedia data storage device using the same, and a method thereof (FAT FILE SYSTEM, VEHICLE MULTI MEDIA DATA STORING APPARATUS AND METHOD THAT USES IT).
  • FAT FILE SYSTEM VEHICLE MULTI MEDIA DATA STORING APPARATUS AND METHOD THAT USES IT.
  • the present invention relates to a FAT file system, a multimedia data storage device for a vehicle using the same, and method thereof, which ensures reliability of storage and enables recovery of files in case of emergency.
  • the vehicle black box system is also one of various driving support systems, and is a device for capturing and recording the situation information by video and audio when the vehicle is running and an accident occurs so that the situation can be judged more accurately.
  • the vehicle black box system installs cameras and microphones inside and outside the terminal to store the video and audio of the situation inside and outside the vehicle, records the entire section of the vehicle, and records only when the vehicle is impacted. It can be operated in such a way as.
  • the method of recording the entire section of the vehicle is to record at all times while the vehicle is running, and to record only when it is impacted to record for a certain time according to the detection of the shock sensor built into the vehicle black box system. That's the way.
  • the conventional black box system for a vehicle operates based on one image processing system, and even if the image processing system malfunctions, it is determined whether the malfunction has occurred until the user checks the recorded image data through a separate medium.
  • the collected video data does not exist due to a malfunction even after an accident occurs, and thus there is a limit that the original function of the black box cannot be performed.
  • Korean Patent Publication No. 2012-0074892 discloses a vehicle black box technology that automatically transmits an emergency rescue signal when an accident occurs and allows only authorized persons to access image data when an accident occurs.
  • the technique disclosed in the Korean Laid-Open Patent has a fatal limitation that the original function of the black box, which collects and stores the process of an accident, is performed through one image processing system, so that even if a malfunction or failure occurs, it cannot be prepared.
  • the present invention has been invented to solve the above problems, and more specifically, by fixing the FAT area, backing up the file system, and fixing the location of the file recorded in the data area, ensuring the reliability of the storage and file in need It is an object of the present invention to provide a FAT file system, a multimedia data storage device for a vehicle using the same, and a method thereof, which enable recovery of the data.
  • Another object of the present invention is to provide a FAT file system having a backup copy of a file system, a vehicle multimedia data storage device using the same, and a method thereof.
  • Another object of the present invention is to provide a FAT file system, a multimedia data storage device for a vehicle using the same, and a method thereof, in which video information and audio data are recorded without duplication of multimedia information data in a separate location.
  • Another object of the present invention is to provide a FAT file system, a vehicle multimedia data storage device using the same, and a method for differently setting the size and number of files according to the recording quality of video data to be set.
  • the FAT file system is a FAT in which the contents of a file allocation table (FAT) for recording the location information of a file generated according to the multimedia data collected around the vehicle is fixed. domain; File System (FS) area for recording the original and backup copy of the file system; And a data area for recording image data, audio data, and multimedia information data included in the multimedia data.
  • FAT file allocation table
  • FS File System
  • the original file of the file system a first backup copy used when the original is damaged, and a second backup copy used when the original and the first backup are damaged are recorded in the FS area.
  • the method may further include recovering a file system from the first backup copy when the original is damaged, and recovering a file system from the second backup copy when the original and the first backup are damaged.
  • the data area may sequentially record the image data and the audio data from the previous block, and the multimedia information data including the image data and the information of the audio data may correspond to a rear block at predetermined time intervals. It is characterized by recording sequentially from the block.
  • the video data and the audio data may be restored from the multimedia information data.
  • the file is characterized in that the size and the number is set differently according to the recording quality of the image data set externally.
  • the file size may be reduced in a predetermined ratio from the highest to the lowest in recorded image quality.
  • the number of the files is characterized in that the recording quality is decreased in the order of low to high.
  • a vehicle multimedia data storage device using a FAT file system is a vehicle multimedia data storage device using a FAT file system including a FAT area, an FS area and a data area.
  • a data collector configured to collect multimedia data generated around the controller;
  • a recording mode setting unit for setting a recording mode of the multimedia data;
  • a recording quality setting unit for setting a recording quality of image data included in the multimedia data;
  • a memory unit for generating and storing a file for the multimedia data recorded in the FAT file system based on a set recording mode and a recording quality;
  • a controller configured to manage the file and the multimedia data recorded in the FAT file system, wherein the controller transmits the video data and the audio data included in the multimedia data to the data area, and transmits the file. It is characterized in that the transfer to the FS area.
  • the recording mode setting unit may set the recording mode to any one of a regular recording mode, a parking recording mode, an event recording mode, and a manual recording mode.
  • the recording quality setting unit may set the recording quality to any one of high quality, medium quality, and low quality.
  • the recording quality setting unit may set the recording quality of the video data collected at the front of the vehicle or at the rear of the vehicle, respectively.
  • the memory unit may further include: a file size selector configured to select a size of the file generated according to a set recording quality; A file number selector which selects the number of files generated according to a set recording quality; A file generation unit generating the file according to the set size and number of the file; And a storage unit for storing the generated file.
  • the file size selecting unit may reduce and set the size of the file in a predetermined ratio from the highest recording quality to the lowest.
  • the number of files selecting unit may set the number of files by decreasing the number of files in the order of the low picture quality.
  • a vehicle multimedia data storage method using a FAT file system is a vehicle multimedia data storage method using a FAT file system including a FAT area, an FS area and a data area.
  • the generating and storing of the file for the multimedia data recorded in the FAT file system based on the set recording quality may include selecting a size of the file generated according to the set recording quality; Selecting the number of files generated according to a set recording quality; Generating the file according to the set size and number of the file; And storing the generated file.
  • the step of selecting the size of the file generated according to the set recording quality characterized in that the size of the file is reduced to set in a predetermined ratio from the highest recording quality to the lowest.
  • the selecting of the number of files generated according to the set recording quality may include setting the number of the files by decreasing the number of the files in the order of decreasing the recording quality.
  • the FAT file system having the above configuration, a vehicle multimedia data storage device using the same, and a method thereof, by fixing a location of a file recorded in a FAT area and a data area, and providing a backup copy of the file system, Even if a defect occurs, it has the effect of enabling file recovery.
  • the multimedia information data is also recorded in a separate location without duplication, thereby minimizing the loss of data.
  • the present invention has an effect of maximizing the utilization of the memory space by setting the size and number of files differently according to the recording quality of the set video data.
  • FIG. 1 is a view for explaining the structure of a FAT file system according to the present invention.
  • FIG. 2 is a diagram for describing a detailed structure of the data area of FIG. 1.
  • FIG. 3 is a view for explaining the configuration of a vehicle multimedia data storage device using a FAT file system according to the present invention.
  • FIG. 4 is a view for explaining a configuration of a memory unit employed in a vehicle multimedia data storage device using a FAT file system according to the present invention.
  • FIG. 5 is a view for explaining the sequence of a vehicle multimedia data storage method using a FAT file system according to the present invention.
  • FIG. 6 is a view for explaining the sequence of a method for generating and storing a file in a vehicle multimedia data storage method using a FAT file system according to the present invention.
  • FIG. 1 is a view for explaining the structure of the FAT file system according to the present invention
  • Figure 2 is a view for explaining the detailed structure of the data area of FIG.
  • the FAT file system 100 includes a FAT area 110, an FS area 120, and a data area 130.
  • the FAT area 110 has a fixed location of a FAT (File Allocation Table) field for recording location information of a file generated according to multimedia data collected in the vicinity of a vehicle.
  • FAT Fe Allocation Table
  • File System (FS) area 120 records the original and backup copies of the file system.
  • FS area 120 an original of the file system, a first backup used when the original is damaged, and a second backup used when the original and the first backup are damaged are recorded. Therefore, the present invention can be recovered even if the original is damaged by the backup copy recorded in the FS area 120.
  • CHECKSUM and CHECKSUM backup value are saved when saving backup copy. Therefore, if there is an error in the original, the FS can be found by checking the FS compared to the CHECKSUM which is backed up by obtaining the CHECKSUM backup value of the FS of the original, the first backup and the second backup.
  • the data area 130 records video data and audio data included in the multimedia data.
  • the data area 130 records multimedia information data including information of video data, audio data, video data, and audio data at a predetermined location. That is, as shown in FIG. 2, the video data and the audio data are sequentially recorded from the previous block, and the multimedia information data is sequentially recorded from a predetermined block corresponding to the next block every predetermined time. Therefore, in the present invention, the video data, the audio data and the multimedia information data are respectively recorded in the set position without duplication, and when the video data and the audio data are sequentially recorded from the previous block, the multimedia information data is also recorded in the separate designated position and the data. Minimize the loss. Therefore, when the file is not normally terminated, the video data and audio data can be recovered from the multimedia information data, and the recorded file can be restored.
  • FIG. 3 is a view for explaining the configuration of a vehicle multimedia data storage device using a FAT file system according to the present invention.
  • the vehicle multimedia data storage device 200 using the FAT file system includes a data collector 210, a recording mode setting unit 220, a recording quality setting unit 230, and a memory.
  • the unit 240 and the controller 250 are included.
  • the vehicle multimedia data storage device 100 relates to an apparatus for storing and recording multimedia data collected from the front or rear of the vehicle using the FAT file system 100 described above.
  • the FAT file system 100 refers to a separate OS type or a part of an additional program that supports systematic organization of files stored in the memory unit 240 employed in the vehicle multimedia data storage device.
  • the data collector 210 collects multimedia data generated around the vehicle.
  • the data collection unit 210 may include a camera to collect an interior or exterior situation image of the vehicle, and may further include a microphone for collecting voice.
  • one camera in one channel, two cameras in two channels, four cameras in four channels, and the like may be selectively selected according to the number of channels. It can be changed and applied.
  • the recording mode setting unit 220 sets a recording mode of the multimedia data collected from the data collecting unit 210.
  • the recording mode setting unit 220 may set the recording mode to any one of the normal recording mode, the parking recording mode, the event recording mode, and the manual recording mode.
  • the continuous recording mode is to record the multimedia data collected while the vehicle is driving
  • the parking recording mode is to record the multimedia data collected while the vehicle is parking
  • the event recording mode is to record the multimedia data at the moment of impact from the outside
  • the user records the multimedia data by setting a recording time and a situation using a separate key frame provided on the exterior.
  • the recording quality setting unit 230 sets the recording quality of the image data included in the multimedia data. That is, the recording quality setting unit 230 allows the user to set the recording quality to any one of high quality, medium quality and low quality by using a separate key frame provided in the exterior. In this case, the user may set different recording quality of image data collected from the front and image data collected from the rear.
  • the memory unit 240 generates and stores a file for multimedia data recorded in the FAT file system based on the set recording mode and the recording quality.
  • the memory unit 240 selects the size and number of files generated according to the set recording quality, and generates and stores files based on the size and number of the files.
  • the controller 250 manages files and multimedia data recorded in the FAT file system.
  • the controller 250 transfers the video data and the audio data included in the multimedia data to the data area of the FAT file system, and transfers the file to the FS area of the FAT file system. Therefore, the FS area of the FAT file system records the original, the first backup copy, and the second backup copy of the received file system, and the data area of the FAT file system stores the received video data, audio data, and multimedia information data at designated locations, respectively. Will be recorded.
  • FIG. 4 is a view for explaining a configuration of a memory unit employed in a vehicle multimedia data storage device using a FAT file system according to the present invention.
  • the memory unit 240 generates and stores a file for multimedia data recorded in the FAT file system 100 based on a set recording mode and a recording quality.
  • the memory unit 240 includes a file size selecting unit 241, a file number selecting unit 242, a file generating unit 243, and a storage unit 244.
  • the file size selector 241 selects a size of a file generated according to the set recording quality.
  • the file size selecting unit 241 reduces and selects the file size by a predetermined ratio in the order from the highest recording quality to the lowest. For example, high quality may set the file size to 70 MB, medium quality to 60 MB file size, and low quality to 50 MB file size, but is not limited thereto.
  • the file number selector 242 selects the number of files to be generated according to the set recording quality.
  • the file number selector 242 selects the files by decreasing the number of files in the order of low to high recording quality. In other words, the number of files to be generated is smaller than the case of the high quality setting.
  • the file generator 243 generates a file according to the size and number of the predetermined file based on the set recording mode. For example, when the recording quality is set to high quality, the file generator 243 generates a file including one minute of multimedia data in 70MB in the continuous recording mode, and 10-20 in 70MB in the runner recording mode. Create a file containing a minute's worth of multimedia data. On the other hand, when the recording quality is set to a low quality, the file generation unit 243 generates a file containing one minute of multimedia data in 50MB in the normal recording mode, and not 10 to 20 minutes in 50MB in the parking recording mode. Create a file containing 30-40 minutes of multimedia data.
  • the storage unit 244 stores the generated file.
  • FIG. 5 is a view for explaining the sequence of a vehicle multimedia data storage method using a FAT file system according to the present invention.
  • the vehicle multimedia data storage method using the FAT file system uses a vehicle multimedia data storage device using the FAT file system described above, and a redundant description thereof will be omitted.
  • the step S100 may include a camera to collect the situation image inside or outside the vehicle, and may further include a microphone for collecting voice.
  • the recording mode of the collected multimedia data is set (S110).
  • the recording mode may be set to any one of the normal recording mode, the parking recording mode, the event recording mode, and the manual recording mode.
  • the recording quality setting unit sets the recording quality of the image data included in the multimedia data (S120).
  • the recording quality can be set to any one of high quality, medium quality and low quality.
  • a file for multimedia data recorded in the FAT file system is generated and stored based on the set recording mode and the recording quality (S130).
  • files are generated and stored according to the size and number of files selected based on the set recording mode.
  • step S140 the video data and audio data included in the multimedia data recorded in the FAT file system are transferred to the data area, and the file is transferred to the FS area (S140).
  • the FS area of the FAT file system records the original, the first backup copy and the second backup copy of the received file system, and the data area of the FAT file system designates the received video data, audio data, and multimedia information data, respectively. Will be recorded at the location.
  • FIG. 6 is a view for explaining the sequence of a method for generating and storing a file in a vehicle multimedia data storage method using a FAT file system according to the present invention.
  • a method of generating and storing a file may generate a file for multimedia data recorded in a FAT file system based on a set recording mode and a recording quality. Save it.
  • the size of the generated file is selected according to the set recording quality (S200).
  • the size of the file is reduced by a predetermined ratio and selected in the order of high to low recording quality.
  • a high quality file may have a file size of 70 MB, a medium quality file having a file size of 60 MB, and a low quality file file having a file size of 50 MB.
  • step S210 the number of files generated according to the set recording quality is selected (S210).
  • the number of files is reduced and selected in the order of low to high recording quality. In other words, the number of files to be generated is smaller than the case of the high quality setting.
  • a file is generated according to the size and number of files selected based on the set recording mode (S220).
  • the recording quality is set to high quality in step S220, in the normal recording mode, a file containing one minute of multimedia data is created in 70MB, and in the runner recording mode, it contains 10 to 20 minutes of multimedia data in 70MB. Create a file.
  • the recording quality is set to low quality, a file containing one minute of multimedia data is created in 50MB in the continuous recording mode, and 30-40 minutes of multimedia instead of 10-20 minutes in 50MB in the parking recording mode. Create a file containing the data.
  • the FAT file system according to the present invention, a vehicle multimedia data storage device using the same, and a method thereof fix a location of a file recorded in a FAT area and a data area, and provide a backup copy of the file system so that a hardware defect may occur. Enable file recovery.
  • multimedia data is also recorded at a separate position without duplication, thereby minimizing data loss.
  • the present invention can maximize the utilization of the memory space by setting the size and number of files differently according to the recording quality of the set video data.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Library & Information Science (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Retry When Errors Occur (AREA)
PCT/KR2014/007466 2014-01-17 2014-08-12 Fat 파일 시스템, 이를 이용하는 차량용 멀티미디어 데이터 저장 장치 및 그 방법 WO2015108258A1 (ko)

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JP2016564928A JP6336618B2 (ja) 2014-01-17 2014-08-12 Ｆａｔファイルシステム、これを用いる車両用マルチメディアデータ保存装置およびその方法

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KR10-2014-0006210 2014-01-17
KR1020140006210A KR101553237B1 (ko) 2014-01-17 2014-01-17 Fat 파일 시스템, 이를 이용하는 차량용 멀티미디어 데이터 저장 장치 및 그 방법

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KR102445798B1 (ko) * 2020-06-04 2022-09-21 주식회사 엠티오메가 멀티미디어 데이터 저장 시스템 및 방법
TWI774451B (zh) * 2020-08-05 2022-08-11 大陸商星宸科技股份有限公司 行車記錄器之儲存裝置的控制方法與儲存裝置控制系統

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CN105389376B (zh) * 2015-11-18 2020-01-03 武汉微创光电股份有限公司 基于连续块的无碎片化多媒体数据存储方法及系统

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