KR20150138980A - Car black box and the control method thereof - Google Patents

Abstract

The present invention relates to a black box device for a vehicle and a control method thereof. The black box device for a vehicle comprises a camera unit which photographs surroundings of a vehicle in real-time; a shock detecting unit which detects a shock applied to the vehicle; and a control unit which recognizes a portable disk as an external disk, when a portable disk is inserted into the black box device, and determines whether the external disk is inserted for the first time or not, and if the external disk is determined that is is inserted for the first time, then allocates partitions of the external disk and initializes the external disk, in a preset manner.

Description

Technical Field [0001] The present invention relates to a black box device for a vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a black box device for a vehicle and a control method thereof, and more particularly to a black box device for a vehicle and a control method thereof for preventing a fragmentation phenomenon from occurring in a mobile disk used as a storage device in a black box for a vehicle.

Generally, a vehicle black box is a device for photographing forward and surrounding images during driving to determine how an accident has occurred when an accident occurs while driving the vehicle.

In addition, the vehicle black box uses a removable disk (e.g., a Mini SD card, an SD card, a USB memory, etc.) as a storage device, creates a folder for the recording image and a folder for the event recording image in the storage device (I.e., a running image) and an event recording image (i.e., an image of a section in which an impact occurs) in each of the folders.

At this time, the vehicle black box recognizes the removable disk as a memory.

However, in the vehicle black box, since the writing and erasing of the images (for example, regularly recorded images and event recorded images) frequently occur and the writing and erasing cycles of the images are different from each other, .

When the fragmentation phenomenon occurs as described above, there arises a problem that the data access speed is significantly slowed down. In other words, the fragmentation phenomenon refers to a phenomenon that the empty space or the data of the storage device is divided into several pieces. This fragmentation causes a problem that the available space of the storage device is reduced or the reading and writing speed is slowed down.

In particular, the vehicle black box must record a predetermined amount of image in a predetermined time within a predetermined time. If the access speed is lowered as described above, a memory overflow occurs and the system (i.e., a vehicle black box) Causing a serious problem such as down or system reset.

If a serious problem occurs in a system (i.e., a black box for a vehicle) due to a fragmentation phenomenon occurring in a removable disk used as a storage device in a vehicle black box, the user backs up the image stored on the removable disk, It is inconvenient to solve the fragmentation problem.

Therefore, in order to ensure the stability of the vehicle black box, it is necessary to provide a method for preventing the occurrence of disk fragmentation.

Background Art [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2010-0045292 (published on May 03, 2010, a black box device for a vehicle with improved memory performance).

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle black box device and a control method thereof for preventing a fragmentation phenomenon on a removable disk used as a storage device in a vehicle black box device.

A black box device for a vehicle according to one aspect of the present invention is a black box device for a vehicle including a camera section for photographing an image of the surroundings of the vehicle in real time and an impact detecting section for detecting an impact generated in the vehicle, If the removable disk is inserted into the removable disk, the removable disk is recognized as an external disk, and it is determined whether the external disk is inserted first in the black box device. If it is determined that the external disk is inserted first, And a controller for dividing and initializing partitions of the external disk.

In the present invention, the controller may include: a disc status check unit for checking a status of the inserted external disc; A capacity setting unit that sets a capacity of the partition of the external disk in advance; A partitioning unit for physically dividing a partition of the external disk into a capacity set in advance by the capacity setting unit; And an initialization unit for formatting each of the partitioned physical partitions into a predetermined file system.

In the present invention, it is preferable that the disk status check unit determines whether the external disk has a predetermined number of physical partitions, whether each of the partitions is set to a predetermined capacity, and whether image data is stored in each of the partitions And the controller determines whether the external disk is first inserted into the black box device based on the check result.

In the present invention, after the partition of the external disk is divided and initialized, the controller stores or deletes files of the same type among the divided partitions in the same partition, The file is sequentially deleted from the old file and the newly created file is separately stored for each partition.

In the present invention, in dividing the partition of the external disk, the controller may divide the partition of the external disk into at least one partition capable of individually storing at least one of a normal recording image, an impact recording image, a motion recording image, and a manual recording image .

According to another aspect of the present invention, there is provided a method of controlling a black box device for a vehicle, the method comprising: recognizing the removable disk as an external disk when the removable disk is inserted into the black box device; Determining whether the external disk is first inserted into the black box device; If it is determined that the external disk is inserted first, the controller divides and initializes partitions of the external disk in a preset manner; And the control unit stores or deletes files of the same type among the divided partitions in the same partition.

The step of checking whether the external disk is first inserted into the black box device may include checking whether the physical partitions are divided by a preset number of the external disks, And whether image data is stored in each of the partitions, and determines whether or not the image data is inserted first.

In the step of partitioning and initializing the partitions of the external disk, the controller divides the external disk into physical partitions of a predetermined number of predetermined capacities, and allocates the divided physical partitions to a predetermined file system .

In the present invention, the type of the file includes at least one of a normal recording image, an impact recording image, a motion recording image, and a manual recording image, which is an image photographed by a camera of the black box device.

In the present invention, in the step of storing or deleting the files of the same kind in the same partition, when the disk space of the partitions exceeds a specified ratio, the controller sequentially deletes old files and stores the newly created files, Respectively.

The present invention prevents a fragmentation phenomenon from occurring in a removable disk used as a storage device in a vehicle black box, thereby preventing occurrence of unstable operation such as system down or system reset of a vehicle black box device caused by the fragmentation, Thereby improving the stability of the box device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view showing a schematic configuration of a black box device for a vehicle according to an embodiment of the present invention; FIG.
FIG. 2 is a flowchart illustrating a method of controlling a black box device for a vehicle according to an embodiment of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a vehicle black box apparatus and a control method thereof according to the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a view illustrating a schematic configuration of a vehicle black box device according to an embodiment of the present invention.

1, the vehicle black box apparatus according to an embodiment of the present invention includes a camera unit 110, an impact sensing unit 120, a control unit 130, and a storage unit 140. The controller 130 includes a disk status check unit 131, an initialization unit 132, a capacity setting unit 133, and a partitioning unit 134.

The camera unit 110 photographs images of the surroundings of the vehicle in real time.

The impact sensing unit 120 senses an impact occurring during driving or stopping (or parking) by using an impact sensor (or motion sensor) such as a kind of acceleration sensor, Signal.

The controller 130 controls the overall operation of the vehicle black box device and may be implemented as an application processor (AP).

The control unit 130 receives an image (for example, a still image, an event recording image, etc.) photographed through the camera unit 110 and stores the image in the storage unit 140. The control unit 130 may include an internal memory (not shown). The control unit 130 buffers an image photographed by the camera unit 110 through the internal memory (not shown) having a high memory access speed, (140).

The storage unit 140 is a kind of nonvolatile memory such as a flash ROM and is typically an external memory type removable disk such as a Mini SD card, an SD card, or a USB memory. Therefore, even if the power supply to the storage unit 140 is interrupted, the stored data is not lost.

However, in this embodiment, the controller 130 recognizes the storage unit 140 as an external disk. That is, although the portable disk is conventionally recognized as a memory, in the present embodiment, the controller 130 recognizes the removable disk as an external disk (i.e., an external hard disk) rather than a memory. Accordingly, the removable disk can be managed by a method of managing an existing hard disk.

For example, when the storage unit 140 (i.e., external disk) is inserted into the black box device according to the present embodiment, the controller 130 checks the state of the storage unit 140 (i.e., external disk) And divides the storage unit 140 into at least one physical partition (e.g., four partitions) according to a predetermined algorithm.

In the present embodiment, the divided partitions are referred to as a first disk 141, a second disk 142, and the like. At this time, each of the disks 141 and 142 is divided into a preset capacity. In the separate physical space (i.e., disk) divided as described above, the cycles of writing and erasing are the same. That is, fragmentation phenomenon does not occur by storing data of the same nature in the same physical space (i.e., disk) (i.e., image data having the same write and erase cycles).

For example, it is possible to store or delete the regularly recorded image on the first disk 141, to store or delete the shock recording image on the second disk 142, to store or delete the motion recorded image on the third disk (not shown) A manual recording image (i.e., an image recorded manually by the user) is stored or deleted on the fourth disk (not shown). Accordingly, it is possible to prevent the occurrence of fragmentation, which has been caused by storing or deleting images of different characteristics on one and the same physical disk.

The disk status check unit 131 detects whether the storage unit 140 (i.e., an external disk) is inserted into the black box device according to the present embodiment.

When the storage unit 140 (i.e., external disk) is inserted, it is checked whether a predetermined number of physical partitions are divided into a preset capacity. If each partition (i.e., disk) of the storage unit 140 (i.e., external disk) is divided into a preset capacity, it is checked whether image data is stored in the corresponding partition (i.e., disk).

If it is determined that the storage unit 140 (i.e., the external disk) is inserted first, that is, if the storage unit 140 (i.e., external disk) has a predetermined number of physical partitions If the partition is not partitioned, the initialization unit 132 divides the storage unit 140 (i.e., external disk) into a predetermined number of physical partitions with a predetermined capacity, and allocates each partitioned partition to a predetermined file system Format.

However, if the storage unit 140 (i.e., external disk) is not inserted first, that is, if the storage unit 140 (i.e., external disk) has a predetermined number of physical partitions The initialization unit 132 does not perform the initialization process (e.g., partitioning and formatting) on the storage unit 140 (i.e., the external disk).

When the initialization unit 132 initializes the storage unit 140 (i.e., the external disk), the capacity setting unit 133 sets a predetermined capacity that is predetermined for each type of image to be stored in each partition.

The partition division unit 134 may be configured to divide the storage unit 140 into a predetermined capacity by the capacity setting unit 133 when the initialization unit 132 initializes the storage unit 140 Disk) in the system.

However, in the present embodiment, each of the constituent units 131 to 134 is described as a means for performing a separate function for the sake of convenience. However, in the control unit 130, the constituent units 131 to 134 may be formed in the form of software And to perform the functions integrally.

Hereinafter, the control operation of the vehicle black box apparatus constructed as described above will be described.

2 is a flowchart illustrating a method of controlling a black box device for a vehicle according to an embodiment of the present invention.

The controller 130 integrally performs the functions of the disk state check unit 131, the initialization unit 132, the capacity setting unit 133 and the partitioning unit 134, It is assumed that the removable disk is recognized as an external disk when a disk (e.g., Mini SD Card, SD Card, USB Memory, etc.) is inserted into the black box device according to the present embodiment.

As shown in FIG. 2, the controller 130 detects whether the external disk is inserted into the black box device according to the present embodiment (S101).

When the external disk is inserted, the controller 130 checks whether the external disk is inserted first in the black box device according to the present embodiment (S102) by checking the status of the external disk.

For example, the controller 130 checks whether a predetermined number of physical partitions of the external disk are divided. Also, it is checked whether each partition is set to a preset capacity. Then, it is checked whether image data is stored in each partition.

If it is determined that the physical partitions are not divided into the predetermined number of physical disks, the controller 130 determines that the external disk is inserted first and performs initialization at step S103.

For example, the controller 130 divides the external disk into a predetermined number of physical partitions with a predetermined capacity, and formats the divided physical partitions into a predetermined file system.

In other words, if the external disk is not divided into a predetermined number of partitions (i.e., disks) (i.e., divided into different types of partitions or arbitrary data are stored), the control unit 130 It is determined that the external disk is inserted first and initialization is performed.

Upon initialization of the external disk, the controller 130 may divide the external disk into at least one physical partition (i.e., disk) according to a predetermined algorithm.

For example, a first disc for storing a normally recorded image, a second disc for storing an impact recording image, a third disc for storing a motion recording image, and a manual recording image (i.e., a manually recorded image) And a fourth disk for storage. At this time, the number of partitions to be partitioned is one example, so that the number of partitions can be adjusted to a greater or lesser number.

At this time, the controller 130 stores or deletes files of the same kind in the same partition (i.e., disk) (S104).

For example, the controller 130 sequentially deletes old files (i.e., image data) and stores new files (i.e., image data) when the disk space becomes a specified ratio (e.g., 70%) for each partition.

However, if it is determined that the external disk is not initially inserted, that is, if the external disk has a predetermined number of physical partitions divided by a preset capacity, the controller 130 initializes the external disk Eg partitioning and formatting).

As described above, according to the present exemplary embodiment, compared to the case where a dedicated file system (TAT: Time Allocation Table) is used, a file size is the same, or two removable disks are used, Can be obtained.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, I will understand the point. Accordingly, the technical scope of the present invention should be defined by the following claims.

110: camera unit 120: shock detection unit
130: control unit 131: disk status check unit
132: initialization unit 133: capacity setting unit
134: partition partitioning unit 140: storage unit
141: first disk 142: second disk

Claims (10)

A black box device for a vehicle, comprising: a camera section for capturing an image of a surroundings of a vehicle in real time; and an impact detecting section for detecting an impact generated in the vehicle,
The method comprising the steps of: recognizing the removable disk as an external disk when the removable disk is inserted into the black box device; determining whether the external disk is first inserted into the black box device; And a controller for dividing and initializing partitions of the external disk in a set manner.
The apparatus of claim 1,
A disc status check unit for checking the status of the inserted external disc;
A capacity setting unit that sets a capacity of the partition of the external disk in advance;
A partitioning unit for physically dividing a partition of the external disk into a capacity set in advance by the capacity setting unit; And
And an initialization unit for formatting each of the divided physical partitions into a predetermined file system.
The apparatus according to claim 2,
Checking whether at least one of a physical partition of the external disk is divided by a predetermined number, whether each partition is set to a preset capacity, and whether image data is stored in each partition;
Wherein the control unit determines whether the external disk is first inserted into the black box device based on the check result.
The apparatus of claim 1,
After dividing and initializing partitions of the external disk,
If the disk space of each partition becomes equal to or larger than a specified ratio, the file of the same kind among the divided partitions is stored or deleted in the same partition, And a black box device for a vehicle.
The apparatus of claim 1,
In partitioning the external disk,
Wherein the at least one partition is divided into at least one partition capable of individually storing at least one of a normal recording image, an impact recording image, a motion recording image, and a manual recording image.
When a removable disk is inserted into the black box device, the control unit recognizes the removable disk as an external disk;
Determining whether the external disk is first inserted into the black box device;
If it is determined that the external disk is inserted first, the controller divides and initializes partitions of the external disk in a preset manner;
Wherein the control unit stores or deletes files of the same type among the divided partitions in the same partition.
The method of claim 6, wherein the step of checking whether the external disk is first inserted into the black box device comprises:
Wherein the controller checks at least one of a physical partition of a predetermined number of the external disks, whether each partition is set to a preset capacity, and whether image data is stored in each partition, Wherein the control unit determines whether or not the vehicle is initially inserted.
The method according to claim 6,
In dividing and initializing partitions of the external disk,
Wherein the control unit divides the external disk into a predetermined number of physical partitions with a preset capacity and formats the divided physical partitions into a predetermined file system.
7. The method of claim 6,
An image captured by a camera of the black box device,
Wherein the at least one of the continuously recorded image, the impact recorded image, the motion recorded image, and the manual recorded image includes at least one of a normal recording image, an impact recording image, a motion recording image, and a manual recording image.
The method according to claim 6,
In the step of storing or deleting the files of the same kind in the same partition,
Wherein the controller controls each partition to individually delete old files and save newly created files when the disk space of the partitions exceeds a specified ratio.

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