KR102197194B1 - Car black box and the control method thereof - Google Patents

Abstract

The present invention relates to a vehicle black box device and a control method thereof, wherein the device includes a camera unit for capturing an image around a vehicle in real time, and a shock sensing unit for detecting an impact generated on the vehicle. , When the removable disk is inserted into the black box device, the removable disk is recognized as an external disk, it is determined whether the external disk is first inserted into the black box device, and when it is determined that the external disk is first inserted, And a control unit for initializing by dividing the partition of the external disk in a preset manner.

Description

Vehicle black box device and control method thereof {CAR BLACK BOX AND THE CONTROL METHOD THEREOF}

The present invention relates to a vehicle black box device and a control method thereof, and more particularly, to a vehicle black box device and a control method thereof for preventing fragmentation from occurring in a removable disk used as a storage device in a vehicle black box.

In general, a vehicle black box is a device that photographs and stores images of front and surroundings while driving a vehicle in order to determine how an accident occurs when an accident occurs while the vehicle is driving.

In addition, the vehicle black box uses a removable disk (e.g., Mini SD Card, SD Card, USB Memory, etc.) as a storage device, and after creating a folder for the recorded video and a folder for the event recorded video in the storage device, , In each of the folders, a constantly recorded image (ie, a driving image) and an event recorded image (ie, an image of an impact zone) are respectively stored.

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

However, in the vehicle black box, writing and erasing of the images (e.g., always-recorded images and event-recorded images) frequently occur, and because the periods of writing and erasing the images are different, fragmentation occurs in the removable disk. There is this.

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

In particular, the vehicle black box must record a predetermined amount of video in the storage device within a predetermined time. If the access speed decreases as described above, a memory overflow occurs and the system (ie, the vehicle black box) is It crashes or causes serious problems such as system reset.

As described above, if a serious problem occurs in the system (i.e., vehicle black box) due to fragmentation occurring in the removable disk used as a storage device in the vehicle black box, the user backs up the image stored on the removable disk and then the removable disk. There is an inconvenience of re-formatting the fragmentation problem to solve.

Therefore, for the stability of the vehicle black box, there is a need for a method to prevent possible disk fragmentation.

The background technology of the present invention is disclosed in Korean Patent Application Laid-Open No. 10-2010-0045292 (published on May 3, 2010, a vehicle black box device with improved memory performance).

The present invention was created to solve the above problems, and an object of the present invention is to provide a vehicle black box device and a control method for preventing fragmentation from occurring in a removable disk used as a storage device in a vehicle black box device.

A vehicle black box device according to an aspect of the present invention includes a camera unit for capturing an image around a vehicle in real time, and an impact sensing unit for detecting an impact generated on the vehicle, wherein the black box device When the removable disk is inserted into the device, the removable disk is recognized as an external disk, and it is determined whether the external disk is first inserted into the black box device, and when it is determined that the external disk is first inserted, the external disk is inserted in a preset manner. And a control unit for initializing by dividing a partition of the external disk.

In the present invention, the control unit includes: a disk state check unit for checking a state of the inserted external disk; A capacity setting unit configured to preset a capacity of a partition of the external disk; A partition dividing unit for physically dividing a partition of the external disk with a capacity preset by the capacity setting unit; And an initialization unit for formatting each of the divided physical partitions into a predefined file system.

In the present invention, the disk status check unit includes whether the external disk is divided into a predetermined number of physical partitions, whether each partition is set to a preset capacity, and whether image data is stored in each partition. At least one of them is checked, and the control unit 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 partitioned and initialized, the control unit stores or deletes files of the same type among the partitions in the same partition, and the disk space of each partition is equal to or greater than a specified ratio. Then, the old files are sequentially deleted and newly created files are individually controlled for each partition.

In the present invention, the control unit divides the partition of the external disk into at least one or more partitions capable of individually storing at least one of a permanently recorded image, a shock recorded image, a motion recorded image, and a manual recorded image. Characterized in that.

According to another aspect of the present invention, a control method of a vehicle black box device includes: when a mobile disk is inserted into the black box device, the controller recognizes the mobile disk as an external disk; Determining, by the control unit, whether the external disk is first inserted into the black box device; When it is determined that the external disk is first inserted, the control unit dividing and initializing the partition of the external disk in a preset manner; And storing or deleting files of the same type among the divided partitions in the same partition.

In the present invention, the step of checking whether the external disk is first inserted into the black box device comprises: whether the external disk is divided into a predetermined number of physical partitions, and each partition is set to a preset capacity. It is characterized in that it is characterized in that it is determined whether or not to be inserted for the first time by checking at least one of whether or not image data is stored in each partition.

In the present invention, in the step of dividing and initializing the partition of the external disk, the control unit divides the external disk into physical partitions by a preset number with a preset capacity, and divides each of the divided physical partitions into a predetermined file system. It is characterized in that it is formatted as.

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

In the present invention, in the step of storing or deleting files of the same type in the same partition, the control unit sequentially deletes old files and stores newly created files when the disk space of the partition exceeds a specified ratio. It is characterized by individual control for each.

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

1 is an exemplary view showing a schematic configuration of a vehicle black box device according to an embodiment of the present invention.
2 is a flowchart illustrating a control method of a vehicle black box device according to an embodiment of the present invention.

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 thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention and may vary according to the intention or custom of users or operators. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

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

As shown in FIG. 1, a vehicle black box device 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. Further, the control unit 130 includes a disk state check unit 131, an initialization unit 132, a capacity setting unit 133, and a partition division unit 134.

The camera unit 110 captures an image around the vehicle in real time.

The shock sensing unit 120 senses the shock that occurs while the vehicle is running or stops (or parking) using a shock sensing sensor (or motion sensing sensor) such as an acceleration sensor, and detects the shock based on the instantaneous shock speed. Generate a signal.

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

The controller 130 receives an image (eg, a constant recording image, an event recorded image, etc.) photographed through the camera unit 110 and stores it in the storage unit 140. At this time, the control unit 130 may include an internal memory (not shown), and buffers the image captured by the camera unit 110 through the internal memory (not shown) having a high memory access speed, and then the storage unit You can also store it at 140.

The storage unit 140 is a type of nonvolatile memory such as a flash ROM, and is generally an external memory type removable disk (eg, Mini SD Card, SD Card, USB Memory, etc.). Therefore, even if the power supply to the storage unit 140 is cut off, the data stored once is not lost.

However, in this embodiment, the control unit 130 recognizes the storage unit 140 as an external disk. That is, conventionally, the removable disk has been recognized as a memory, but in the present embodiment, the controller 130 recognizes the removable disk as an external disk (ie, external hard disk) instead of a memory. Accordingly, the removable disk can be managed in a manner of managing the existing hard disk.

For example, when the storage unit 140 (ie, an external disk) is inserted into the black box device according to the present embodiment, the control unit 130 checks the state of the storage unit 140 (ie, the external disk) According to a preset algorithm, the storage unit 140 is divided into at least one or more physical partitions (eg, four partitions).

Hereinafter, in the present embodiment, each of the divided partitions is described 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 (ie, disk) divided as described above, the write and erase cycles are the same. That is, by storing data of the same nature (ie, image data having the same write and erase cycle) in the same physical space (ie, disk), fragmentation does not occur.

For example, the first disk 141 stores or deletes the always recorded image, the second disk 142 stores or deletes the shock recorded image, and the third disk (not shown) stores or deletes the motion recorded image, A manual recorded image (ie, an image manually recorded by a user) is stored or deleted on the fourth disk (not shown). Accordingly, it is possible to prevent the occurrence of a fragmentation phenomenon that has conventionally occurred by storing or deleting images of different characteristics in one and the same physical disk.

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

In addition, when the storage unit 140 (ie, an external disk) is inserted, it is checked whether physical partitions are divided by a preset number with a preset capacity. In addition, when each partition (ie, disk) of the storage unit 140 (ie, an external disk) is divided into a preset capacity, it is checked whether or not image data is stored in the corresponding partition (ie, a disk).

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

However, as a result of the check, if the storage unit 140 (i.e., external disk) is not inserted for the first time, that is, the storage unit 140 (i.e., external disk) has a preset capacity and a number of physical partitions If it is divided, the initialization unit 132 does not perform an initialization process (eg, partitioning and formatting) for the storage unit 140 (ie, an external disk).

When the initialization unit 132 initializes the storage unit 140 (ie, an external disk), the capacity setting unit 133 sets a corresponding capacity previously designated for each type of image to be stored in each partition.

When the storage unit 140 is initialized by the initialization unit 132, the partition dividing unit 134 uses the storage unit 140 (i.e., external type) with a capacity preset by the capacity setting unit 133. Disk).

However, in the present embodiment, for convenience, each of the configuration means (131 to 134) is described as a means for performing a separate function, but the control unit 130 uses the respective configuration means (131 to 134) in a software type module form. It can also be included to perform the functions in an integrated manner.

Hereinafter, a control operation of the vehicle black box device configured as described above will be described.

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

For convenience, the following control unit 130 integrally performs the functions of the disk status check unit 131, the initialization unit 132, the capacity setting unit 133, and the partition division unit 134, and the control unit 130 When a disk (eg, Mini SD Card, SD Card, USB Memory, etc.) is inserted into the black box device according to the present embodiment, it is assumed that the removable disk is recognized as an external disk.

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

And when the external disk is inserted, the controller 130 checks whether the external disk is first inserted into the black box device according to the present embodiment by checking the state of the external disk (S102).

For example, the controller 130 checks whether the external disk is divided into physical partitions by a preset number. In addition, it is checked whether each partition is set to a preset capacity. Then, it is checked whether or not image data is stored in each of the partitions.

As a result of the check, if the external disk is not divided into a predetermined number of physical partitions with a preset capacity, the controller 130 determines that the external disk has been inserted for the first time and performs initialization (S103).

For example, the control unit 130 divides the external disk into a preset number of physical partitions with a preset capacity, and formats each of the divided physical partitions with a preset file system.

In other words, if the external disk is not divided into partitions (i.e., disks) of a predetermined capacity and number (i.e., even if it is divided into different types of partitions or arbitrary data is stored), the controller 130 Initialization is performed by determining that the external disk is first inserted.

When initializing the external disk, the controller 130 may divide the external disk into at least one or more physical partitions (ie, disks) according to a preset algorithm.

For example, a first disk for storing a constantly recorded image, a second disk for storing a shock recorded image, a third disk for storing a motion recorded image, and a manual recorded image (that is, an image manually recorded by a user). It can be divided into a fourth disk for storage. In this case, since the number of partitions to be divided is described as an example, it may be adjusted to a larger or smaller number.

At this time, the control unit 130 stores or deletes files of the same type in the same partition (ie, disk) (S104).

For example, when the disk space for each partition reaches a specified ratio (eg, 70%) or more, the controller 130 sequentially deletes the old files (ie, image data) and stores the new files (ie, image data).

However, as a result of the check, if the external disk is not inserted for the first time, that is, if the external disk is divided into a predetermined number of physical partitions with a preset capacity, the controller 130 performs an initialization process for the external disk ( Example: Partitioning and formatting) is not performed.

As described above, the present embodiment provides an improved fragmentation prevention effect at low cost compared to the case of using a conventional dedicated file system (TAT: Time Allocation Table), having the same file size, or using two removable disks. Can be obtained.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but these are only exemplary, and those of ordinary skill in the field to which the technology pertains, various modifications and other equivalent embodiments are possible. I will understand the point. Therefore, the technical protection scope of the present invention should be determined by the following claims.

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

Claims (10)

In the vehicle black box device comprising a camera unit for capturing an image around a vehicle in real time, and an impact detection unit for detecting an impact generated on the vehicle,
When the removable disk is inserted into the black box device, the removable disk is recognized as an external disk, and it is determined whether the external disk is first inserted into the black box device, and if it is determined that the external disk is first inserted, Including; a control unit for initializing by dividing the partition of the external disk in a set manner;
The control unit,
Includes; a disk status check unit for checking the status of the inserted external disk,
The disk status check unit,
At least one of whether the external disk is divided by a preset number of physical partitions, whether each partition is set to a preset capacity, and whether image data is stored in each partition is checked, and the check result is The vehicle black box device, characterized in that the control unit determines whether the external disk is first inserted into the black box device.
The method of claim 1, wherein the control unit,
A capacity setting unit configured to preset a capacity of a partition of the external disk;
A partition dividing unit for physically dividing a partition of the external disk with a capacity preset by the capacity setting unit; And
And an initialization unit for formatting each of the divided physical partitions into a predefined file system.
delete The method of claim 1, wherein the control unit,
After partitioning and initializing the external disk,
Among the partitioned partitions, files of the same type are stored or deleted in the same partition, but when the disk space of each partition exceeds a specified ratio, the old files are sequentially deleted and the newly created files are individually controlled for each partition. Vehicle black box device, characterized in that.
The method of claim 1, wherein the control unit,
In dividing the partition of the external disk,
A black box device for a vehicle, comprising dividing at least one of a permanently recorded image, a shock recorded image, a motion recorded image, and a manual recorded image into at least one or more partitions capable of storing individually.
When the removable disk is inserted into the black box device, the control unit recognizing the removable disk as an external disk;
Determining, by the control unit, whether the external disk is first inserted into the black box device;
If it is determined that the external disk is first inserted, the control unit initializing by dividing a partition of the external disk in a preset manner; And
Including, the control unit storing or deleting files of the same type among the divided partitions in the same partition,
The step of determining whether the external disk is first inserted into the black box device,
The controller checks at least one of whether the external disk is divided by a preset number of physical partitions, whether each partition is set to a preset capacity, and whether image data is stored in each partition, A control method of a vehicle black box device, characterized in that it is determined whether to be inserted.
delete The method of claim 6,
In the step of dividing and initializing the partition of the external disk,
And the control unit divides the external disk into physical partitions by a preset number with a preset capacity, and formats each of the divided physical partitions into a preset file system.
The method of claim 6, wherein the file type is
As an image captured by the camera of the black box device,
A method of controlling a vehicle black box device, comprising at least one of a constant recording video, an impact recording video, a motion recording video, and a manual recording video.
The method of claim 6,
In the step of storing or deleting files of the same type in the same partition,
The control method of the vehicle black box apparatus, characterized in that when the disk space of the partition exceeds a specified ratio, the old files are sequentially deleted and the newly created files are individually controlled for each partition.

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