WO2018079908A1

WO2018079908A1 - Image data storing method and device therefor

Info

Publication number: WO2018079908A1
Application number: PCT/KR2016/013256
Authority: WO
Inventors: 허준영; 최진혁
Original assignee: 한화테크윈 주식회사
Priority date: 2016-10-25
Filing date: 2016-11-17
Publication date: 2018-05-03
Also published as: KR20180045320A

Abstract

According to one embodiment of the present invention, an image data storing method comprises the steps of: allowing a first camera among a plurality of cameras connected through a network to photograph a monitoring zone and generate image data; allowing the first camera to record the image data in a local storage device; periodically transmitting a recording-related information request to one or more of the plurality of cameras connected through the network, when the first camera cannot record the image data in the local storage device; allowing the first camera to receive recording-related information corresponding to the recording-related information request from one or more cameras; allowing the first camera to determine priorities of the one or more cameras on the basis of the recording-related information; and allowing the first camera to transmit the image data to a second camera having the highest priority among one or more camera.

Description

Image data storage method and apparatus therefor

The present invention relates to a method for storing image data and an apparatus therefor.

In recent years, the installation of the camera in the interior, exterior, street, etc. for a variety of purposes, such as security, security, store management is increasing. These cameras may be connected to each other via a network by wire or wirelessly to perform a function as a network camera.

In addition, an administrator who manages a place where a camera is installed may remotely manage a remote place such as a building or a store by accessing the camera through a personal computer.

An object of the present invention is to provide a technique for storing image data that the camera cannot record in the storage device.

According to an aspect of the present invention, there is provided a method of storing image data, wherein a first camera of a plurality of networked cameras photographs a surveillance area to generate image data, and the first camera records the image data to a local storage device. And when the first camera cannot record the image data to the local storage device, periodically transmitting a recording related information request to one or more cameras of the plurality of networked cameras. A camera receiving recording related information corresponding to the recording related information request from the one or more cameras, the first camera determining the priority of the one or more cameras based on the recording related information, and A first camera to a second camera that is the highest priority of the one or more cameras. And transmitting the image data group.

In the present embodiment, after the transmitting of the image data, when the first camera can record the image data to the local storage device, the first camera transmits an image data request to the second camera. The method may further include receiving the image data from the second camera by the first camera, and recording the image data on the local storage device by the first camera.

In the present embodiment, the local storage device may be at least one of a secure digital (SD) card, a hard disk drive (HDD), and a solid state drive (SSD) of the first camera.

In the present embodiment, when the first camera cannot record the image data to the local storage device, when the first camera is not connected to the local storage device or the capacity of the image data is stored locally. It may be larger than the remaining capacity of the device.

In the present embodiment, the recording related information may include a total storage capacity and a usage capacity of a local storage device connected to each of the one or more cameras, and the size of image data per second generated by each of the one or more cameras. .

In the present embodiment, the local storage device may be at least one of an SD card, an HDD, and an SSD of each of the one or more cameras.

In the present embodiment, the determining of the priorities of the one or more cameras may include: determining the remaining capacity of the local storage device connected to each of the one or more cameras by the first camera based on the total storage capacity and the usage capacity. Calculating a recordable time of the local storage device connected to each of the one or more cameras based on the remaining capacity and the size of the image data per second, and the first camera based on the recordable time. Determining priorities of the one or more cameras.

An image data storage device according to an embodiment of the present invention transmits a recording-related information request to a camera module for capturing a surveillance area to generate image data, a local storage device for recording the image data, and one or more networked cameras. A communication interface configured to receive recording related information corresponding to the recording related information request from the one or more cameras and to transmit the image data to the highest priority camera, and to record the image data to the local storage device. And periodically transmitting the recording related information request, determining the priority of the one or more cameras based on the recording related information, and transmitting the image data to the highest priority camera among the one or more cameras. .

In the present embodiment, the communication interface transmits an image data request to the highest priority camera, receives the image data from the highest priority camera, and the processor transmits the image data to the highest priority camera, When the image data can be recorded on the local storage device, when the image data request is transmitted to the highest priority camera and the image data is received from the highest priority camera, the image data is recorded on the local storage device. You can.

In the present embodiment, the recording related information includes a total storage capacity and a usage capacity of a local storage device connected to each of the one or more cameras, and the size of image data per second generated by each of the one or more cameras. A processor is further configured to calculate a remaining capacity of the local storage device connected to each of the one or more cameras based on the total storage capacity and the usage capacity, and based on the remaining capacity and the size of the image data per second. The recordable time of the local storage device connected to each of the cameras may be calculated, and the priority of the one or more cameras may be determined based on the recordable time.

According to an aspect of the present invention, there is provided a method of storing image data, wherein a first camera of a plurality of networked cameras photographs a surveillance region to generate image data, and the first camera records the image data to an external storage device. And when the first camera cannot record the image data to the external storage device, periodically transmitting a recording related information request to one or more cameras of the plurality of networked cameras. A camera receiving recording related information corresponding to the recording related information request from the one or more cameras, the first camera determining the priority of the one or more cameras based on the recording related information, and A first camera to a second camera that is the highest priority of the one or more cameras. And transmitting the image data group.

In the present embodiment, after the transmitting of the image data, when the first camera can record the image data to the external storage device, the first camera transmits an image data request to the second camera. The method may further include receiving the image data from the second camera by the first camera, and transmitting the image data to the external storage device by the first camera.

In the present embodiment, the external storage device may be connected to at least one of the plurality of networked cameras.

In the present embodiment, the step of determining the priority of the one or more cameras, based on the recording related information of the first camera and the recording related information received from the one or more cameras, the first camera Determining a priority of a camera and the one or more cameras.

In the present exemplary embodiment, the transmitting of the image data to the second camera may include storing the image data by the first camera when the first camera is the second camera.

In the present exemplary embodiment, after the storing of the image data, when the first camera can record the image data to the external storage device, the first camera transmits the image data to the external storage device. It may further comprise a step.

According to embodiments of the present invention, even when the camera is not connected to the local storage device or the capacity of the image data is larger than the remaining capacity of the local storage device, the camera temporarily stores the image data using network-connected peripheral cameras, Video data can be recorded without losing any additional cost.

In addition, according to the embodiments of the present invention, when the camera is connected to the local storage device or the remaining capacity of the local storage device is larger than the capacity of the image data, the camera obtains the image data from the peripheral camera temporarily storing the image data. You can record video data without interruption.

1 is a diagram illustrating a monitoring system according to an exemplary embodiment.

2 is a block diagram of an image data storage device according to an exemplary embodiment.

3 is a flowchart illustrating a method of storing image data, according to an exemplary embodiment.

4 is a diagram for describing priority determination of a plurality of networked cameras, according to an exemplary embodiment.

5 is a diagram for describing a monitoring system, according to an exemplary embodiment.

6 is a flowchart illustrating a method of storing image data, according to an exemplary embodiment.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

In the following embodiments, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are only used to distinguish one component from another.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the following embodiments, terms such as "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, one or more It is to be understood that it does not exclude in advance the possibility of the presence or addition of other features or numbers, steps, operations, components, components or combinations thereof.

Embodiments of the present invention can be represented by functional block configurations and various processing steps. Such functional blocks may be implemented in various numbers of hardware or / and software configurations that perform particular functions. For example, embodiments of the invention may be implemented directly, such as memory, processing, logic, look-up table, etc., capable of executing various functions by the control of one or more microprocessors or other control devices. Circuit configurations can be employed. Similar to the components of an embodiment of the present invention may be implemented in software programming or software elements, embodiments of the present invention include various algorithms implemented in combinations of data structures, processes, routines or other programming constructs. It may be implemented in a programming or scripting language such as C, C ++, Java, assembler, or the like. The functional aspects may be implemented with an algorithm running on one or more processors. In addition, embodiments of the present invention may employ the prior art for electronic configuration, signal processing, and / or data processing. Terms such as mechanism, element, means, configuration can be used broadly and are not limited to mechanical and physical configurations. The term may include the meaning of a series of routines of software in conjunction with a processor or the like.

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

1 and 2, a surveillance system according to an embodiment includes a network 10 and a camera 100.

The network 10 may include a wired network or a wireless network. The wireless network may be 2G (Generation) or 3G cellular communication system, 3rd Generation Partnership Project (3GPP), 4G communication system, Long-Term Evolution (LTE), World Interoperability for Microwave Access (WiMAX), or the like.

The camera 100 captures a surveillance area to obtain an image of the surveillance area. The camera 100 may photograph a surveillance area in real time for the purpose of surveillance or security. The camera 100 may be a PTZ camera that is capable of panning and tilting and whose zoom magnification of the lens is adjustable. One or more cameras 100 may be provided. For example, the surveillance system may include first camera 101 to fourth camera 104.

The camera 100 may be a low power camera driven by a battery. The low power camera maintains its normal sleep mode and periodically checks to see if an event has occurred. The low power camera enters the active mode when an event occurs, and returns to the sleep mode when the event does not occur. As such, the low power camera may reduce power consumption by maintaining the active mode only when an event occurs.

The camera 100 may communicate with a network device using various communication methods such as a wired / wireless LAN, Wi-Fi, ZigBee, Bluetooth, and Near Field Communication. have. For example, the first camera 101 to the fourth camera 104 may communicate with each other according to a low power wireless communication protocol using a radio frequency of the Industrial Scientific Medical band (ISM band).

Hereinafter, each configuration of the image data storage device implemented by the camera 100 will be described in detail.

The camera 100 includes a camera module 110, a local storage device 120, a communication interface 130, and a processor 140.

The camera module 110 captures a surveillance area to generate image data. The camera module 110 may be formed of an image sensor, such as a charge-coupled device (CCD) sensor or a complementary metal-oxide-semiconductor (CMOS) sensor.

The camera module 110 may perform a panning, tilting, or zooming operation to change a surveillance area or enlarge a photographing target. For example, when an event is detected, the camera module 110 may change a surveillance area or enlarge a photographing target to an area where an event is detected.

The local storage device 120 records the image data.

The local storage device 120 may be built in the camera 100 or may be connected to the camera 100 from the outside. The local storage device 120 may be a secure digital (SD) card, a hard disk drive (HDD), a solid state drive (SSD), or the like of the camera 100.

One or more local storage devices 120 may be provided. For example, the first camera 101 may be connected to the eleventh local storage devices L11 to 1n local storage devices L1n, respectively.

On the other hand, the local storage device 120 of the first camera 101 is the image data generated from the camera module 110 of the first camera 101 and the communication interface 130 of the first camera 101 is the second camera At least one of the image data received from the 102 to the fourth camera 104 may be recorded. In this case, the local storage device 120 may distinguish and record the image data generated by the first camera 101 and the image data received from the second camera 102 to the fourth camera 104, respectively.

The local storage device 120 may sequentially store image data. In this case, the local storage device 120 may store the image data in the order in which the image data is generated. For example, the local storage device 120 of the first camera 101 may be generated by the first camera 101 and recorded in the first camera 101, and may be generated by the first camera 101. Video data recorded on the second camera 102 and received from the second camera 102 may be stored in the generated order.

The communication interface 130 communicates with a network device. The communication interface 130 may perform at least one communication function of a wired / wireless LAN, Wi-Fi, ZigBee, Bluetooth, and Near Field Communication.

The communication interface 130 may transmit a recording related information request to one or more cameras connected to a network, and receive recording related information corresponding to the recording related information request from the one or more networked cameras.

For example, the communication interface 130 of the first camera 101 transmits a recording related information request to the second camera 102 to the fourth camera 104, respectively, and the second camera 102 to the fourth camera. Receiving recording related information corresponding to the recording related information request may be received from 104.

The recording related information may include a total storage capacity and a usage capacity of a local storage device connected to each of the one or more networked cameras, and the size of image data per second generated by each of the one or more networked cameras.

For example, the recording related information received from the second camera 102 may include a total storage capacity of at least one of the twenty-first local storage devices L21 to 2n local storage devices L2n connected to the second camera 102. And a usage capacity and a size of image data per second generated by the second camera 102. The twenty-first local storage device L21 to the second n-th storage device L2n may be SD cards, HDDs, SDDs, etc. of the second camera 102, respectively.

The recording related information received from the third camera 103 may include the total storage capacity and the used capacity of at least one of the thirty-first local storage devices L31 to 3n local storage device L3n connected to the third camera 103. The size of the image data per second generated by the third camera 103 may be included. The thirty-first local storage devices L31 to 3n local storage devices L3n may be SD cards, HDDs, SDDs, etc. of the third camera 103, respectively.

The recording related information received from the fourth camera 104 may include total storage capacity and usage capacity of at least one of the forty-first local storage devices L41 to 4n local storage device L4n connected to the fourth camera 104. The size of the image data per second generated by the fourth camera 104 may be included. The forty-first local storage devices L41 to 4n local storage devices L4n may be SD cards, HDDs, SDDs, etc. of the fourth camera 104, respectively.

The communication interface 130 may transmit image data to the highest priority camera.

For example, the communication interface 130 of the first camera 101 may transmit image data to the second camera 102, which is the highest priority among the second camera 102 to the fourth camera 104.

The communication interface 130 may transmit an image data request to the highest priority camera and receive image data from the highest priority camera.

For example, the communication interface 130 of the first camera 101 transmits an image data request to the second camera 102, which is the highest priority among the second cameras 102 to 4, and the second camera 102. Image data may be received from the camera 102.

The processor 140 controls the overall operation of the camera 100.

The processor 140 determines whether the image data generated from the camera module 110 can be recorded in the local storage device 120.

The processor 140 may record the image data to the local storage device 120 when the camera 100 is not connected to the local storage device 120 or the capacity of the image data is larger than the remaining capacity of the local storage device 120. You can judge that you can't.

When the image data cannot be recorded in the local storage device 120, the processor 140 periodically transmits a recording related information request to one or more networked cameras, and receives the recording related information from one or more networked cameras. Prioritize one or more networked cameras based on the information.

The processor 140 may periodically receive recording related information by periodically transmitting a recording related information request and periodically update the priority of one or more cameras connected to the network based on the recording related information.

The processor 140 may calculate the remaining capacity of the local storage device connected to each of the networked one or more cameras based on the total storage capacity and the usage capacity of the local storage device connected to each of the networked one or more cameras.

For example, the processor 140 of the first camera 101 may use the second camera based on the total storage capacity and the use capacity of at least one of the twenty-first local storage devices L21 to 2n local storage devices L2n. The remaining capacity of the local storage device connected to 102 can be calculated.

The processor 140 of the first camera 101 is configured to connect to the third camera 103 based on the total storage capacity and the usage capacity of at least one of the thirty-first local storage devices L31 to 3n local storage device L3n. The remaining capacity of the connected local storage device can be calculated.

The processor 140 of the first camera 101 is connected to the fourth camera 104 based on the total storage capacity and the usage capacity of at least one of the 41 th local storage devices L41 to 4n local storage device L4n. The remaining capacity of the connected local storage device can be calculated.

The processor 140 is connected to each of the networked one or more cameras based on the remaining capacity of the local storage device connected to each of the networked one or more cameras and the size of image data per second generated by each of the networked one or more cameras. The recordable time of the local storage device may be calculated.

For example, the processor 140 of the first camera 101 may generate a second image based on the remaining capacity of the local storage device connected to the second camera 102 and the size of the image data per second generated by the second camera 102. The recordable time of the local storage device connected to the camera 102 may be calculated.

The processor 140 of the first camera 101 uses the third camera 103 based on the remaining capacity of the local storage device connected to the third camera 103 and the size of the image data per second generated by the third camera 103. The recordable time of the local storage device connected to the terminal may be calculated.

The processor 140 of the first camera 101 determines the fourth camera 104 based on the remaining capacity of the local storage device connected to the fourth camera 104 and the size of the image data per second generated by the fourth camera 104. The recordable time of the local storage device connected to the terminal may be calculated.

Finally, the processor 140 may determine the priority of the networked one or more cameras based on the recordable time of the local storage device connected to each of the networked one or more cameras.

For example, the processor 140 of the first camera 101 prioritizes the second camera 102 based on the recordable time of the local storage device connected to each of the second camera 102 to the fourth camera 104. You can decide by ranking.

In another example, the processor 140 of the first camera 101 prioritizes the second camera 102 based on the remaining capacity of the local storage device connected to each of the second camera 102 to the fourth camera 104. You can decide by ranking.

The processor 140 may transmit image data to the highest priority camera among one or more cameras connected to the network.

For example, the processor 140 of the first camera 101 may transmit image data to the second camera 102.

Thereafter, when the image data can be recorded in the local storage device 120, the processor 140 transmits the image data request to the highest priority camera, and receives the image data from the highest priority camera, and stores the image data locally. The device 120 may record.

For example, when the processor 140 of the first camera 101 can record the image data to the local storage device 120 of the first camera 101, the processor 140 of the first camera 101 requests an image data request from the second camera 102. Can be sent. Subsequently, when the communication interface 130 of the first camera 101 receives the image data from the second camera 102, the processor 140 of the first camera 101 receives the image data of the first camera 101. The local storage device 120 may record.

On the other hand, the image data storage device according to embodiments of the present invention may be implemented as one physical device. For example, as described above, the image data storage device may be implemented as the camera 100.

On the other hand, the image data storage device according to embodiments of the present invention may be implemented by combining a plurality of physical devices organically. To this end, some of the components included in the image data storage device may be implemented by any one physical device, and others may be implemented by other physical devices. For example, one physical device may be implemented as part of the camera 100 and another physical device may be implemented as part of a gateway or server.

Description of the image data storage device implemented by the camera 100 in the present specification, the image data storage device implemented as a part of the camera 100 and part of the gateway or server, the image data storage device implemented as a gateway or server Applicable to the operation.

Although not shown, the monitoring system according to an embodiment may further include a gateway, a server, and a client terminal.

The gateway may receive image data from the camera 100, transmit image data to a server through the network 10, and receive a command from the server.

The client terminal may display image data of the camera 100 transmitted from the server on the screen. The client terminal may include at least one processor. The client terminal may be driven in a form included in other hardware devices such as microprocessors or general purpose computer systems. The client terminal may be a personal computer or a mobile terminal.

Referring to FIG. 3, a first camera 101 of a plurality of networked cameras photographs a surveillance region to generate image data (S101).

Subsequently, the first camera 101 determines whether recording of image data is possible in the local storage device (S103).

When the first camera 101 cannot record the image data to the local storage device, the first camera 101 transmits a recording related information request to the networked second camera 102 to the fourth camera 104 respectively. (S105, S107, S109).

The second camera 102 to the fourth camera 104 respectively search for recording related information in response to the request for recording related information (S111, S113, and S115).

For example, the second camera 102 may include a total storage capacity and a usage capacity of at least one of the twenty-first local storage devices L21 to 2n local storage devices L2n, and the second camera 102 generated per second. The size of the image data can be retrieved.

The third camera 103 may include a total storage capacity and a usage capacity of at least one of the thirty-first local storage devices L31 to 3n local storage devices L3n, and the size of image data per second generated by the third camera 103. You can search for.

The fourth camera 104 may include a total storage capacity and a usage capacity of at least one of the forty-first local storage devices L41 to 4n local storage devices L4n, and the size of image data per second generated by the fourth camera 104. You can search for.

Subsequently, the first camera 101 receives recording related information corresponding to the recording related information request from the second camera 102 to the fourth camera 104, respectively (S117, S119, and S121).

The first camera 101 determines the priority of the second camera 102 to the fourth camera 104 based on the recording related information (S123).

Referring to FIG. 4, the total storage capacity of the local storage device connected to the second camera 102 is 524288.00 MB (megabytes), and the total storage capacity of the local storage device connected to the third camera 103 is 65536.00 MB. The total storage capacity of the local storage device connected to the camera 104 may be 131072.00 MB.

The storage capacity of the local storage device connected to the second camera 102 is 98.00MB, the storage capacity of the local storage device connected to the third camera 103 is 12.00MB, and the storage capacity of the local storage device connected to the fourth camera 104 is used. The usage may be 88.00 MB.

The size of image data per second generated by the second camera 102 is 2MB, the size of image data per second generated by the third camera 103 is 1MB, and the size of image data per second generated by the fourth camera 104 is 5MB. Can be.

On the other hand, since the storage device generally uses only 90% of the total storage capacity and the remaining 10% is not used, the first camera 101 may be a local storage device connected to each of the second camera 102 to the fourth camera 104. Priority of the second camera 102 to the fourth camera 104 may be determined based on 90% of the total storage capacity.

The first camera 101 has 471761.20MB reduced from 98% of 471859.20MB, which is 90% of the total storage capacity of the local storage device connected to the second camera 102, to 471761.20MB. It can be calculated as the remaining capacity of the storage device.

The first camera 101 is a 58970.40MB reduced from 58982.40MB, which is 90% of the total storage capacity of the local storage device connected to the third camera 103, 12MB, which is a 12MB capacity, and a local connected to the third camera 103. It can be calculated as the remaining capacity of the storage device.

The first camera 101 has a local capacity connected to the fourth camera 104 from 117964.80MB, which is 90% of the total storage capacity of the local storage device connected to the fourth camera 104, to 117876.80MB, which is reduced by 88 MB. It can be calculated as the remaining capacity of the storage device.

In addition, the first camera 101 divides 471761.20MB, which is the remaining capacity of the local storage device connected to the second camera 102, into 2MB, which is the size of the image data per second generated by the second camera 102, and records the data in seconds. The possible time can be calculated. As a result, the first camera 101 can calculate the recordable time of the local storage device connected to the second camera 102 called 65.52 hours.

The first camera 101 divides 58970.40 MB, which is the remaining capacity of the local storage device connected to the third camera 103, into 1 MB, which is the size of the image data per second generated by the third camera 103, and enables recording in seconds. Can be calculated. As a result, the first camera 101 may calculate the recordable time of the local storage device connected to the third camera 103 called 16.38 hours.

The first camera 101 can record 117876.80MB of the remaining capacity of the local storage device connected to the fourth camera 104 by 5MB, which is the size of the image data per second generated by the fourth camera 104, in seconds. Can be calculated. As a result, the first camera 101 can calculate the recordable time of the local storage device connected to the fourth camera 104 of 6.55 hours.

In addition, the first camera 101 may determine the priority in order of long recordable time, that is, in the order of the second camera 102, the fourth camera 104, and the third camera 103.

On the other hand, the first camera 101 prioritizes the priorities in order of the remaining capacity of the connected local storage device, that is, in the order of the second camera 102, the third camera 103, and the fourth camera 104. You can also decide.

Referring to FIG. 3 again, the first camera 101 transmits image data to the second camera 102 which is the highest priority among the second cameras 102 to 104 (S125).

The second camera 102 records image data to at least one of the twenty-first local storage device L21 to the second-n local storage device L2n (S127).

Subsequently, when a predetermined time elapses (S129), the first camera 101 performs the operation of step S105 to the operation of step S125 once again. That is, the first camera 101 periodically transmits a recording related information request to the second camera 102 to the fourth camera 104, thereby recording information related to the recording from the second camera 102 to the fourth camera 104. May be periodically received, and the priority of the second camera 102 to the fourth camera 104 may be periodically updated based on the recording related information.

If, as a result of updating the priority, the fourth camera 104 is determined as the highest priority, the first camera 101 transmits the image data transmitted to the second camera 102 to the fourth camera 104. Can be.

Subsequently, the first camera 101 transmits an image data request to the second camera 102 only when the image data can be recorded in the local storage device (S131).

When the first camera 101 receives the image data from the second camera 102 (S133), the first camera 101 records the image data to the local storage device (S135).

In this case, the first camera 101 may transmit an image data request to the fourth camera 104 to further record the image data received from the fourth camera 104 in the local storage device.

That is, even if the first camera 101 cannot record image data to the eleventh local storage device L11 to 1n local storage device L1n, the second camera connected to the first camera 101 by network By temporarily storing the image data using the 102 to the fourth camera 104, all of the image data can be recorded without losing the image data. Therefore, according to the present embodiment, since image data can be recorded without additional cost, it is possible to provide an economical and efficient image data storage service.

In addition, the first camera 101 temporarily stores the image data and then records the image data to the eleventh local storage device L11 to 1n local storage device L1n. The video data may be seamlessly recorded by importing temporarily stored image data from at least one of the networked second camera 102 to the fourth camera 104. Therefore, user convenience can be increased.

Hereinafter, contents different from those described with reference to FIGS. 1 to 4 will be mainly described. The same content as described above is omitted or briefly described.

Referring to FIG. 5, a surveillance system according to an embodiment includes a network 10, first to third cameras 103, and an external storage device 200.

The external storage device 200 may be connected to at least one of a plurality of networked cameras. For example, the external storage device 200 may be connected to the first camera 101 to the third camera 103 through the network 10, respectively. In this case, the first camera 101 to the third camera 103 may communicate with each other through the network 10.

The external storage device 200 may be a network attached storage (NAS), a network video recorder (NVR), or the like. One or more external storage devices 200 may be provided.

The external storage device 200 may record image data received from the first camera 101 to the third camera 103. In this case, the external storage device 200 may separately record the image data received from the first camera 101 to the third camera 103.

The external storage device 200 may sequentially store image data. In this case, the external storage device 200 may store the image data in the order in which the image data are generated. For example, the external storage device 200 generates image data generated by the first camera 101 and recorded in the first camera 101, and recorded in the first camera 101 and recorded in the second camera 102. After that, the video data received from the second camera 102 can be stored in the generated order.

The first camera 101 determines whether the image data generated by the first camera 1010 can be recorded in the external storage device 200.

If the first camera 101 is not connected to the external storage device 200 or the capacity of the image data is larger than the remaining capacity of the external storage device 200, the first camera 101 may transmit the image data to the external storage device 200. You can judge that you cannot record in the

When the first camera 101 cannot record the image data to the external storage device 200, the first camera 101 periodically transmits a recording related information request to the second camera 102 and the third camera 103, and the second The priority of the second camera 102 and the third camera 103 may be determined based on the recording related information received from the camera 102 and the third camera 103.

Meanwhile, the first camera 101 may determine the priorities of the first camera 101 to the third camera 103 based on the recording related information of each of the first camera 101 to the third camera 103. .

The first camera 101 may periodically receive recording related information by periodically transmitting a recording related information request, and may periodically update the priorities of the plurality of cameras connected to the network based on the recording related information.

The first camera 101 may calculate the remaining capacity of the local storage device connected to each of the networked cameras based on the total storage capacity and the usage capacity of the local storage device connected to each of the networked cameras. .

In addition, the first camera 101 may be configured for each of the plurality of networked cameras based on the remaining capacity of the local storage device connected to each of the plurality of networked cameras and the size of image data per second generated by each of the plurality of networked cameras. The recordable time of the local storage device connected to the terminal may be calculated.

Finally, the processor 140 may determine the priority of the plurality of networked cameras based on the recordable time of the local storage device connected to each of the plurality of networked cameras.

For example, the first camera 101 may determine the second camera 102 as the highest priority based on the recordable time of the local storage device connected to each of the second camera 102 and the third camera 103. .

Meanwhile, the first camera 101 may determine the first camera 101 as the highest priority based on the recordable time of the local storage device connected to each of the first camera 101 to the third camera 103.

As another example, the first camera 101 may determine the second camera 102 as the highest priority based on the remaining capacity of the local storage device connected to each of the second camera 102 and the third camera 103. .

Meanwhile, the first camera 101 may determine the first camera 101 as the highest priority based on the remaining capacity of the local storage device connected to each of the first camera 101 to the third camera 103.

The first camera 101 may transmit image data to the highest priority camera. For example, the first camera 101 may transmit image data to the second camera 102, and the second camera 102 may record image data. For another example, the first camera 101 may record image data by itself.

Thereafter, when the first camera 101 can record the image data to the external storage device 200, the first camera 101 transmits an image data request to the highest priority camera, and receives the image data from the highest priority camera. The external storage device 200 may record.

For example, when the first camera 101 can record the image data to the external storage device 200, the first camera 101 transmits a request for the image data to the second camera 102 and the image from the second camera 102. Upon receiving the data, the image data may be recorded in the external storage device 200.

Meanwhile, when the image data can be recorded in the external storage device 200, the first camera 101 may transmit the image data recorded in the first camera 101 to the external storage device 200.

Referring to FIG. 6, a first camera 101 of a plurality of networked cameras photographs a surveillance region to generate image data (S301).

Subsequently, the first camera 101 determines whether image data can be recorded in the external storage device 200 (S303).

When the first camera 101 cannot record the image data to the external storage device 200, when the first camera 101 transmits the image data to the external storage device 200 (S305), the external storage device ( 200 records video data (S333).

When the first camera 101 cannot record the image data to the external storage device 200, the first camera 101 records information related to the recording of the network-connected second camera 102 and the third camera 103, respectively. The request is transmitted (S307, S309).

The second camera 102 and the third camera 103 retrieve recording related information in response to the recording related information request, respectively (S311 and S313).

Subsequently, the first camera 101 receives recording related information corresponding to the recording related information request from the second camera 102 and the third camera 103, respectively (S315 and S317).

The first camera 101 determines the priority of the plurality of cameras connected to the network based on the recording related information (S319).

At this time, the first camera 101 determines the priority of the second camera 102 and the third camera 103 based on the recording related information received from the second camera 102 and the third camera 103. Can be.

On the other hand, the first camera 101 is based on the recording-related information of the first camera 101 and the recording-related information received from the second camera 102 and the third camera 103, the first camera (101) to The priority of the third camera 103 may be determined.

The first camera 101 transmits image data to the second camera 102 which is the highest priority among the second camera 102 and the third camera 103 (S321).

The second camera 102 records image data (S323).

Meanwhile, the first camera 101 may record image data to the first camera 101 which is the highest priority among the first camera 101 to the third camera 103.

Subsequently, when a predetermined time elapses (S325), the first camera 101 performs the operation of the operation S307 to the operation S321 again. That is, the first camera 101 periodically transmits a recording related information request to the second camera 102 and the third camera 103, thereby recording information related to the recording from the second camera 102 and the third camera 103. Can be periodically received, and the priority of the second camera 102 and the third camera 103 or the priority of the first camera 101 to the third camera 103 based on the recording related information Can be updated.

Subsequently, the first camera 101 transmits an image data request to the second camera 102 only when the image data can be recorded in the external storage device 200 (S327).

When the first camera 101 receives the image data from the second camera 102 (S329), the first camera 101 transmits the image data to the external storage device 200 (S135).

Meanwhile, the first camera 101 may transmit image data recorded in the first camera 101 to the external storage device 200 only when the image data can be recorded in the external storage device 200.

That is, even when the first camera 101 cannot record the image data to the external storage device 200, the first camera 101 temporarily stores the image data using the network-connected first camera 101 to the third camera 103. By doing so, it is possible to record all the video data without losing it.

In addition, when the first camera 101 temporarily stores the image data and then records the image data to the external storage device 200, the first camera 101 records the image recorded by the first camera 101. By importing the data or the image data temporarily stored from the second camera 102 or the third camera 103, the image data may be seamlessly recorded on the external storage device 200.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will understand that the present invention can be embodied in a modified form without departing from the essential characteristics of the present invention.

Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown not in the above description but in the claims, and the invention claimed by the claims and the inventions equivalent to the claims should be construed as being included in the present invention.

It is likely to be used in various types of security systems.

Claims

Generating image data by capturing a surveillance area by a first camera of a plurality of networked cameras;

Recording, by the first camera, the image data to a local storage device;

If the first camera cannot record the image data to the local storage device, periodically transmitting a recording related information request to one or more cameras of the plurality of networked cameras;

Receiving, by the first camera, recording related information corresponding to the recording related information request from the one or more cameras;

Determining, by the first camera, priorities of the one or more cameras based on the recording related information; And

And transmitting, by the first camera, the image data to a second camera having the highest priority among the one or more cameras.
The method of claim 1,

After the step of transmitting the image data,

When the first camera is capable of recording the image data to the local storage device, sending the image data request to the second camera by the first camera;

The first camera receiving the image data from the second camera; And

And recording, by the first camera, the image data to the local storage device.
The method of claim 1,

The local storage device is at least one of a Secure Digital (SD) card, a Hard Disk Drive (HDD), and a Solid State Drive (SSD) of the first camera.
The method of claim 1,

When the first camera cannot record the image data to the local storage device, when the first camera is not connected to the local storage device or the capacity of the image data is larger than the remaining capacity of the local storage device. Image data storage method, which is a large case.
The method of claim 1,

The recording related information includes a total storage capacity and a usage capacity of a local storage device connected to each of the one or more cameras, and the size of image data per second generated by each of the one or more cameras.
The method of claim 5,

The local storage device is at least one of the SD card, HDD, and SSD of each of the one or more cameras.
The method of claim 5,

Determining priorities of the one or more cameras,

Wherein the first camera calculates a remaining capacity of the local storage device connected to each of the one or more cameras based on the total storage capacity and the used capacity; and the one based on the remaining capacity and the size of the image data per second. Calculating a recordable time of the local storage device connected to each of the cameras; And

And determining, by the first camera, priorities of the one or more cameras based on the recordable time.
A camera module for photographing the surveillance area to generate image data;

A local storage device for recording the image data;

A communication interface for transmitting a recording related information request to one or more cameras connected to a network, receiving recording related information corresponding to the recording related information request from the one or more cameras, and transmitting the image data to a highest priority camera; And

Periodically transmitting the recording related information request when the image data cannot be recorded on the local storage device, determining the priority of the one or more cameras based on the recording related information, and among the one or more cameras. And a processor for transmitting the image data to a highest priority camera.
The method of claim 8,

The communication interface transmits an image data request to the highest priority camera, receives the image data from the highest priority camera,

The processor may transmit the image data request to the highest priority camera and transmit the image data request to the highest priority camera when the image data may be recorded on the local storage device after transmitting the image data to the highest priority camera. And when the image data is received, record the image data to the local storage device.
The method of claim 8,

The recording related information includes a total storage capacity and a usage capacity of a local storage device connected to each of the one or more cameras, and the size of image data per second generated by each of the one or more cameras.

The processor calculates a remaining capacity of the local storage device connected to each of the one or more cameras based on the total storage capacity and the used capacity, and based on the remaining capacity and the size of the image data per second Calculating a recordable time of the local storage device connected to each of the cameras, and determining the priority of the one or more cameras based on the recordable time.
Generating image data by capturing a surveillance area by a first camera of a plurality of networked cameras;

Recording, by the first camera, the image data to an external storage device;

Periodically transmitting a recording related information request to one or more cameras of the plurality of networked cameras, when the first camera cannot record the image data to the external storage device;

Receiving, by the first camera, recording related information corresponding to the recording related information request from the one or more cameras;

Determining, by the first camera, priorities of the one or more cameras based on the recording related information; And

And transmitting, by the first camera, the image data to a second camera having the highest priority among the one or more cameras.
The method of claim 11,

After the step of transmitting the image data,

If the first camera is capable of recording the image data to the external storage device, transmitting the image data request to the second camera by the first camera;

The first camera receiving the image data from the second camera; And

And transmitting, by the first camera, the image data to the external storage device.
The method of claim 11,

And the external storage device is connected to at least one of the plurality of networked cameras.
The method of claim 11,

Determining priorities of the one or more cameras,

And determining, by the first camera, priorities of the first camera and the one or more cameras based on the recording related information of the first camera and the recording related information received from the one or more cameras. Way.
The method of claim 14,

The transmitting of the image data to the second camera,

And storing the image data by the first camera when the first camera is the second camera.
The method of claim 15,

After storing the image data,

And transmitting the image data to an external storage device by the first camera when the first camera can record the image data to the external storage device.