KR100369743B1 - Image recording device and control method for vehicle - Google Patents

Abstract

The present invention relates to a device mounted on a vehicle and continuously recording and storing the environment around the vehicle at a predetermined time interval. In the event of a collision with another vehicle while the vehicle is in operation, it is necessary to secure objective data for judging both parties' faults. In order for the driver to visually recognize the image information of the surrounding image captured by the camera 10 and the data signal of the current date and the current time transmitted from the real time switch 13, Displayed on the external display device 31 and stored in the storage unit 40 to obtain objective data on the accident situation in the event of an accident of the vehicle, and later shows the situation occurred around the vehicle to others or as evidence If you want to submit it can be stored separately in the secondary storage unit 41, it will be described repeatedly in the limited storage space of the storage unit 40 As a result, there is an effect of preventing a problem that the screen to be stored is erased.

Description

Vehicle Image Recorder and Control Method {IMAGE RECORDING DEVICE AND CONTROL METHOD FOR VEHICLE}

The present invention relates to a device mounted on the inside of the vehicle to continuously record and store the environment around the vehicle, and in particular, during the operation of the vehicle by continuously photographing the environment of the vehicle and stored in the storage to objectively when an accident occurs in the vehicle The present invention relates to a vehicle video recording apparatus and a method for securing evidence data.

Conventionally, a device for mounting a camera capable of shooting blind spots of a car at an appropriate position and displaying a video of the blind spot captured by the camera on the driver's seat side has been proposed, but these devices are merely an auxiliary means of driving a vehicle. In addition, since there is no function of storing the environment around the vehicle as image information on a recording medium, there is a problem that objective evidence cannot be provided when an unexpected event such as a vehicle accident occurs.

The present invention has been made to solve the above problems, the continuous shooting at regular intervals through the camera during the operation of the vehicle is stored in the storage unit, the image signal stored in the storage unit via the control unit to the external display device Display and secure objective data on the surrounding conditions of the vehicle in the event of an accident, and during the operation of the vehicle, it is possible to recognize obstacles or other hazards located in the blind spot behind the vehicle when reversing. The purpose is to provide a video recording device for a vehicle that provides convenience of the vehicle operation.

1 is a block diagram schematically showing the configuration of a video recording apparatus for a vehicle according to the present invention;

2 is a flowchart schematically illustrating a method of controlling a memory unit in a controller of a vehicle video recording apparatus according to the present invention;

3 is a block diagram schematically illustrating a configuration of adding a secondary storage unit to a vehicle video recording apparatus as another embodiment of the present invention.

4 is a diagram schematically illustrating a method of storing discrete data in time in a secondary storage unit according to the present invention.

<Brief description of symbols for the main parts of the drawings>

10: camera 11: encoder part

12: Operation Panel 13: Real Time Switch

20: control unit 21: decoder unit

30: output unit 31: external display device

32: external output port 40: storage

41: secondary storage unit

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

The present invention is installed in a predetermined portion of the inside of the vehicle as shown in Figure 1, the camera 10 for photographing the environment around the vehicle, and the encoder unit for converting the image signal transmitted from the camera 10 into a digital signal (11), a control unit 20 for receiving an image signal transmitted from the encoder unit 11 and performing a predetermined control operation and transferring the image signal to the storage unit 40 and the output unit 30, and the control unit 20. And a storage unit 40 for storing the video signal transmitted from the video signal and the data signal transmitted from the real-time switch 13 in units of memory blocks, and provided in front of the vehicle video recording apparatus. It is integrally included in the operation panel 12 for generating an operation signal, the real time switch 13 for generating a data signal for the current date and time and transmitting it to the control unit 20, and the output unit 30. Camera transmitted from the control unit 20 An external display device 31 for displaying the image signal of the image 10 and the data signal of the real-time switch 13 so as to be visually recognized, and the storage unit 40 which are integrally included in the output unit 30. It consists of an external output port 32 for transmitting the data recorded in the external device.

The video recording apparatus for a vehicle according to the present invention automatically starts operation when the start switch of the vehicle is turned on, and photographs the environment around the vehicle through the camera 10.

As an embodiment of the present invention, the camera 10 is coupled to a sun visor attached to the front of the vehicle, and generates a video signal by photographing the situation in front of the vehicle twice per second, and the image taken by the camera 10 The video signal is converted into a digital signal by the encoder unit 11 and then transmitted to the control unit 20. The control unit 20 transmits the converted digital signal to the current date and time transmitted from the real time switch 13. The data signal is stored in the storage unit 40 and displayed on the external display device 31 of the output unit 30.

The controller 20 stores and erases data in units of memory blocks of the storage unit 40. The image signal transmitted from the camera 10 and the data signal transmitted from the real time switch 13 are controlled by the controller 20. Are sequentially recorded in the storage unit 40, and when the storage space of the storage unit 40 is insufficient, the new storage space is automatically secured by erasing the memory block according to the flowchart described below.

The control method of the memory block performed by the controller 20 follows a flowchart as shown in FIG. 2.

Hereinafter, a unit for recording data in the storage unit 40 is abbreviated as a memory block, and the number of storage unit memory blocks is allocated in order from 0 to n-1, and the total number of memory blocks is set to n. Also, t and a used as variables have integer values.

Step 1: The driver turns on the start switch.

Second step: The camera 10 provided inside the vehicle is operated to photograph the surroundings of the vehicle at a predetermined time interval to generate an image signal, and the real-time switch 13 outputs a data signal according to the current date and time. Generate.

Step 3: Initialize the variables t and a to 0

Fourth Step: The control unit 20 stores the video signal transmitted from the camera 10 and digitally converted by the encoder unit 11 and the data signal transferred from the real time switch 13 in the memory block t, and the memory block t. The data stored in a + 1 is erased. When the image signal transmitted from the camera 10 and the data signal transmitted from the real-time switch 13 are first recorded in the storage unit 40, the memory block a + 1 is deleted. The erase operation is skipped because no data is stored.

Step 5: The controller 20 increases the variables t and a by one.

Step 6: The controller 20 determines whether the variable t is greater than the number n-2 of the memory block. At this time, when t is smaller than n-2, the feedback is fed back to the fourth step and the data is stored in the memory block t.

Step 7: The controller 20 stores the data in the memory block t when t is larger than n-2, erases the data in the memory block at, feeds back to the third step, and initializes the variables t and a. Store the signal again from block 0.

As described above, when the vehicle is started, the third to seventh steps are repeatedly performed until a separate control signal is transmitted.

Deleting data of the a + 1 memory block while storing data in the t memory block simultaneously considers time for storing and erasing the data, while data of the t + 1 memory block is stored while data is stored in the t memory block. It is being erased.

Accordingly, the video signal transmitted from the camera 10 and the data signal transmitted from the real-time switch 13 are repeatedly stored and erased by the controller 20, and thus the video signal and data signal for a predetermined time are always stored in the storage unit ( 40).

That is, for example, if there are 50 memory blocks in the storage unit and the time that can be stored in one memory block is 0.1 minutes, the total time that can be stored in the storage unit 40 is 4.9 minutes, and the camera 10 and the real-time switch are used. Since the storage and erasing are repeated from the time point at which the data was transmitted in (13) exceeds 4.9 minutes, the latest 4.9 minutes of data is always stored in the storage unit 40 after 5 minutes have passed since the vehicle was started.

As an embodiment of the present invention, since the storage unit 40 uses the EEP ROM or the flash memory, even if the power of the vehicle is cut off, the data recorded in the storage unit 40 until a separate erasure operation is performed. It is preserved unless it is.

The operation panel 12 is used by the user to manually operate the vehicle image recording apparatus according to the present invention. When the driver presses a stop button (not shown) provided in the operation panel 12, the camera 10 ) Is stopped, and when the driver presses the stop button again, the camera 10 is driven in a manner of starting again.

On the other hand, the output unit 30 according to the present invention is composed of an external display device 31 and an external output port 32, the image signal transmitted from the camera 10 and the data transmitted from the real-time switch 13 The signal is stored in the storage unit 40 and displayed in real time to the driver through the external display device 31 of the output unit 30 through the control unit 20, and the external output port 32 of the output unit 30. ) Is configured to transmit data of the storage unit 40 to an external storage medium.

On the other hand, since the storage unit 40 according to the present invention repeatedly stores data in a limited storage space, it is impossible to store a situation at a specific point in time desired by the user, and the user of the operation panel 12 at an appropriate point in time by a user mistake. If the stop button is not operated, a problem may occur.

Accordingly, as another embodiment of the present invention, as shown in FIG. 3, an additional secondary storage unit 41 may be additionally used, and the secondary storage unit 41 may include two storage blocks, and thus the first block may be used. The second and second blocks are configured to be stored simultaneously, and the operation panel 12 is provided with a separate storage button 2 (not shown) to operate the secondary storage unit 41.

That is, the storage unit 40 has a secondary storage unit 41 separately from the storage unit 40, and when the user operates the storage button 2 provided in the operation panel 12, the control unit 20 in the storage unit 40 Among the stored data, the data from the latest time record to the data of the fastest time recording are sequentially transmitted to the first block of the secondary storage unit 41, and the save button is stored to the second block of the secondary storage unit 41. From the time point 2 is operated, the controller 20 stores the data transmitted from the camera 10 and the real-time switch 13 in real time. The data stored in the first block is stored before the user presses the save button 2. The video signal and the data signal are stored, and the data stored in the second block is the video signal and the data signal after the user presses the save button 2.

In the method of recording data in the secondary storage unit 41, the data with the latest time recording means the oldest data stored among the data currently stored in the storage unit 40. By invention

The secondary storage unit 41 is configured such that data stored in the storage unit 20 can be stored without loss by using a storage capacity of the first block larger than that of the storage unit 40. In order to prevent the loss of data due to the erasing operation of 20), the data in the storage unit 40 is sequentially stored from the data having the latest recording time.

That is, when the control unit 20 is storing the video signal of the camera 10 and the data signal of the real-time switch 13 in the t memory block of the storage unit 40, the t + 1 memory block is being erased at the same time. In the memory block of the storage unit, the data of the t + 2 memory block is the oldest data in time.

Therefore, when the storage button 2 of the operation panel 12 is operated, the control unit 20 sequentially records t + 2 memory blocks to n-1 memory blocks of the storage unit 40 and then rewrites 0 memory blocks to t memory blocks. The data up to are sequentially stored in the first block of the secondary storage unit 41, and at the same time, the video signal of the camera 10 and the data signal of the real time switch 13 are directly stored through the control unit 20. The second memory block of the section 41 is stored.

That is, as an embodiment of the present invention, if the time that can be stored in the storage unit 40 is 5 minutes and the time that can be stored in the first block and the second block of the secondary storage unit 41 is 5 minutes, respectively, When the save button 2 of the panel 12 is pressed, the previous five minutes of data are stored in the first block of the secondary storage 41 based on the time of the pressing, and the next five minutes of data is stored in the second of the secondary storage 41. By being stored in the memory block, video signals and data signals for 10 minutes before and after are stored in the secondary storage section 41.

Since the storage time in the storage unit 40 and the secondary storage unit 41 can be adjusted according to which storage medium is used, the storage time shown in the above embodiments does not limit the scope of the present invention.

Forming two storage blocks of the secondary storage unit 41 may use a method of separately operating two storage units inside the secondary storage unit 41 in hardware, or secondary storage in software. After dividing the storage space of the unit 41 into two blocks, a method of forming a separate program routine to simultaneously store the first block and the second block may be used.

On the other hand, forming two storage blocks of the secondary storage unit 41 is the stability of the data stored in the secondary storage unit 41 and the data transmitted from the storage unit 40 to the secondary storage unit 41 In order to increase the transmission efficiency of the second storage unit 41 may be used as one storage block, wherein the video signal and the data signal transmitted to the secondary storage unit 41 and the real-time It is not data transmitted at the position 13, but data stored in the storage 40.

That is, the video signal of the camera 10 and the data signal of the real-time switch 13 are first stored in the storage unit 40 and then stored in the secondary storage unit 41, which is a storage unit ( This is to prevent data loss that may occur by repeating the data storage and erasing operation in (10).

In one embodiment, in the secondary storage unit 41 composed of one storage block, if the t memory block is currently being stored in the storage unit 40 at the time when the user operates the storage button 2 of the operation panel 12, At the same time, since the t + 1 memory block is being erased, the controller 20 sequentially stores the t + 2 memory block until the storage capacity of the secondary storage unit 41 is exceeded.

That is, the storage unit 40 repeats the storage and erasing according to the control signal of the control unit 20, so that the total storage capacity is limited, but there is no limit of the storage time, and the secondary storage unit 40 stores only the storage. Since it is performed, there is a storage time corresponding to the total storage capacity.

Therefore, in one embodiment, the total storage capacity of the storage unit 40 is an amount capable of storing the video signal and the data signal for 5 minutes, and the total storage capacity of the secondary storage unit 41 is the video signal and the data signal 10. If the amount can be stored for a minute, when the user presses the storage button 2 of the operation panel 12, the secondary storage unit 41 stores the video signal and the data signal for 10 minutes before and after pressing the storage button 2, The storage unit 40 stores the video signal and the data signal of the last five minutes while repeating the storage and erasing.

The secondary storage unit 41 is configured to be separated from the vehicle image recording apparatus according to the present invention immediately after the storage is completed, and if necessary, the storage device of the same specification can be inserted again.

On the other hand, in the case of using the large-capacity secondary storage unit 41 by storing the data in addition to the back of the existing data, it is possible to store the video signal and the data signal discontinuous in the secondary storage unit 41, As shown in FIG. 4, when the time at which the first video signal and the data signal are stored until the k th storage block is t1, the second input video signal and the data signal are stored for t1 time again from the k + 1 th storage block. Proceed.

The first input image signal and data signal mean data stored in the secondary storage unit 41 by the user pressing the storage button 2. The second input image signal and data signal mean the user after a predetermined time elapses. When the storage button 2 is pressed again, it means data stored in the secondary storage unit 41.

The time t1 and the storage block k at which the video signal and the data signal are stored may be initially set, and as shown in the embodiment of the present invention, 5 minutes before and 5 minutes after the time when the user presses the storage button 2 are displayed. Minutes, a total of 10 minutes of video and data signals are stored, and the storage is automatically terminated.

Therefore, if the secondary storage unit 41 of sufficient capacity is used, the surrounding situation, which is generated after a predetermined time after the completion of the storage of the video signal and the data signal of a certain situation, is configured to be stored again later.

The vehicle image recording apparatus according to the present invention stores the environment around the vehicle photographed through the camera 10 in the storage unit 40 while the vehicle is in operation, and at the same time on the external display device 31 of the output unit 30. The display facilitates the operation of the vehicle, and if an unexpected vehicle accident occurs, the data recorded in the storage unit 40 can be used as an objective evidence data, and the situation generated around the vehicle is later provided to others. If you want to show or submit as evidence data can be stored separately in the secondary storage unit 41, by repeatedly storing in a limited storage space of the storage unit 40 has the effect of preventing the problem that the desired screen is erased have.

Claims (3)

delete In the method of controlling the memory block of the storage unit in the control unit of the video recording apparatus mounted on the vehicle, The first step in which the driver turns on the start switch, the second step in which the camera provided in the vehicle operates to photograph the surroundings of the vehicle at a predetermined time interval to generate an image signal, and the controller initializes the variables t and a to 0. In a third step of controlling, the controller stores a video signal transmitted from the camera and digitally converted by the encoder and a data signal transmitted from the real-time switch in the memory block t, and erases the data stored in the memory block a + 1. In the fifth step, the control unit increases the variables t and a by one, and the control unit determines whether the variable t is greater than the number n-2 of the memory block, and feeds back to the fourth step when t is smaller than n-2. A sixth step of storing data in the block t; the control unit stores a signal in the memory block t and erases the data of the memory block at when t is greater than n-2; And a seventh step of storing the signal from the memory block 0 again by initializing the variables t and a. In a video recording apparatus mounted on a vehicle, It is installed at a predetermined part inside the vehicle and receives a camera that captures the environment around the vehicle, an encoder for converting the video signal transmitted from the camera into a digital signal, and receives a video signal transmitted from the encoder. A control unit for performing an operation and transferring the control unit to a storage unit and an output unit, a storage unit for storing the image signal transmitted from the control unit and the data signal transmitted from the real-time switch in units of memory blocks, and a front surface of the vehicle image recording apparatus. And a control panel for generating a predetermined operation signal according to a user's operation instruction, a real-time switch for generating a data signal for a current date and time, and transmitting it to a control unit, and an output unit. To visually recognize the transmitted video signal of the camera and the data signal of the real-time switch An external display device that is displayed, an external output port that is integrally included in the output unit and transmits the data recorded in the storage unit to an external device, and two storage blocks. In case of operating Button 2, based on the point of time when Button 2 is operated according to the control signal of the control unit, the data recorded in the storage unit is sequentially transmitted to the first block from the latest data to the fastest data. And a secondary storage unit configured to store data transmitted from the camera and the real-time switch through the control unit in a second block in real time from the time when the storage button 2 is operated.