WO2007069658A1 - Dispositif d’acquisition de donnees, systeme d’enregistrement de donnees et procede d’enregistrement de donnees - Google Patents

Dispositif d’acquisition de donnees, systeme d’enregistrement de donnees et procede d’enregistrement de donnees Download PDF

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Publication number
WO2007069658A1
WO2007069658A1 PCT/JP2006/324871 JP2006324871W WO2007069658A1 WO 2007069658 A1 WO2007069658 A1 WO 2007069658A1 JP 2006324871 W JP2006324871 W JP 2006324871W WO 2007069658 A1 WO2007069658 A1 WO 2007069658A1
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WIPO (PCT)
Prior art keywords
data
recording
unit
proxy
information
Prior art date
Application number
PCT/JP2006/324871
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English (en)
Japanese (ja)
Inventor
Yasuji Nakamura
Tsuyoshi Ogata
Hirotaka Fujimura
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Publication of WO2007069658A1 publication Critical patent/WO2007069658A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
    • H04N23/661—Transmitting camera control signals through networks, e.g. control via the Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/77—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/27—Server based end-user applications
    • H04N21/274—Storing end-user multimedia data in response to end-user request, e.g. network recorder
    • H04N21/2743—Video hosting of uploaded data from client
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/4223—Cameras
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources

Definitions

  • Data acquisition device data recording system, and data recording method
  • the present invention relates to a data acquisition device, a data recording system, and a data recording method that can be used in a monitoring system or the like.
  • an imaging device such as a TV camera is used to monitor various places such as in a financial institution or near a place where an ATM (automated teller machine) is installed.
  • an ATM automated teller machine
  • Patent Document 1 As a conventional network camera that can be used in such a monitoring system, for example, a technique disclosed in Patent Document 1 is known.
  • a network camera and a recording device Sao are connected via a network, an FTP (File Transfer Protocol) client Z server system is configured, and the network capability is obtained by photographing. It is assumed that the received image data is transferred to a recording device via a network and the image data is stored in the recording device, and in Patent Document 1, a network failure occurs and the image data is stored in the recording device.
  • control the network power to save the image data in the internal memory of the camera.
  • Patent Document 1 Japanese Patent Laid-Open No. 2005-026866
  • Patent Document 1 If the technique of Patent Document 1 is adopted, it is possible to suppress data loss when a failure occurs on the network, but avoid further complicating the system configuration and control contents. There is a situation that cannot be done. In addition, when many network cameras are connected, it is inevitable that traffic on the network will increase.
  • An object of the present invention is to provide a data acquisition device, a data recording system, and a data recording method capable of suppressing partial data loss and simplifying the configuration of the entire system.
  • a data acquisition device is a data acquisition device connected to a communication line to which an external device for generating and recording data is connected.
  • a data recording unit that records at least one of the internal data generated by the data generation unit and the external data, and when the internal data is recorded by the data recording unit, Proxy recording that designates at least one external device having a free area for recording the internal data as a proxy recording device based on memory capacity information
  • ⁇ tough has a configuration and a data transmission unit that transmits the internal data to the specified proxy recording apparatus by the proxy recording apparatus specifying section.
  • a system is configured in which a plurality of data acquisition devices are connected to each other via a communication network. Assuming that you save yourself.
  • a specific data acquisition device for example, a network camera is assumed.
  • data is transmitted between the first data acquisition device and the second data acquisition device. Communication can be performed. Further, the remaining memory capacity in each data acquisition device can be grasped by referring to the information transmitted from each data acquisition device to the communication network.
  • each data acquisition device has a limited amount of data (memory capacity) that can be recorded by itself, the data acquisition device that has generated a large amount of data! Then, further recording may not be possible. However, other data acquisition devices connected to the same communication network may still have a sufficient remaining memory capacity. This remaining memory capacity can be grasped based on information sent from each data acquisition device to the communication network.
  • the data acquisition device is at least one external device (other data acquisition device) having a sufficient remaining memory capacity as a substitute recording device Is searched on the communication network, and based on the search result, the data generated by the data generation unit of the local station is transmitted to the proxy recording device. Further, the data acquisition device receives the data generated inside the external device via the external device power and the communication network, and stores it in a free area on the data recording unit of its own station.
  • the remaining memory capacity decreases on the first data acquisition device, and the second data acquisition device
  • the second data acquisition device is used as the proxy recording device, and the data generated on the first data acquisition device is transferred to the second data via the communication network. Transfer to acquisition device and save to memory on second data acquisition device. Data recorded on behalf of the second data acquisition device can be acquired via a communication network as needed, so all data generated on the first data acquisition device can be saved without loss. can do.
  • the image data is recorded in the data acquisition device itself, the amount of data transmitted on the communication network is reduced, and communication traffic on the network can be reduced.
  • the data acquisition device of the present invention is connected to an external device that generates and records data, and a management server that has remaining memory capacity information including a free area that can be recorded in the external device.
  • a data acquisition device connected to a communication line, a data generation unit that generates internal data, a data reception unit that receives external data generated by the external device via the communication line, and the data generation unit
  • a data recording unit that records at least one of the internal data generated by and the external data, and the recording of the internal data to the management server when there is a problem in recording the internal data by the data recording unit
  • a proxy designation request unit for sending a proxy designation request for requesting designation of a proxy recording device acting as a proxy, and based on the remaining memory capacity information!
  • a data transmission unit for transmitting internal data to the proxy recording device.
  • the data acquisition device of the present invention when there is a problem in data recording, such as the remaining memory of the local station is not sufficient for data recording, an external device (other data) is sent to the management server. (Acquisition device) requests to specify a proxy recording device that performs data recording, and the proxy recording device specified by the management server in response to this request substitutes powerful data that cannot be recorded by the local station. Data can be recorded and data loss can be prevented.
  • the data acquisition device of the present invention is configured such that the data generation unit includes an imaging unit that captures an image and generates image data.
  • a data acquisition device having a function similar to that of a network camera can be configured. Therefore, the data acquisition device can be used when configuring various monitoring systems.
  • the recording system of the present invention is a data recording system including a plurality of data acquisition devices that acquire data and a management server that manages the plurality of data acquisition devices, and the data acquisition device includes: A data generation unit that generates internal data, a data reception unit that receives other data generated by another data acquisition device, and at least one of the internal data generated by the data generation unit and the other data.
  • the remaining memory capacity notifying unit for notifying the management server of the remaining memory capacity information regarding the free space of the data recording unit, and the data recording unit A proxy specification request for requesting the management server to specify a proxy recording device that proxy the recording of the internal data.
  • a request recording unit a proxy recording device information receiving unit that receives address information of the proxy recording device specified by the management server from the management server, and a proxy received by the proxy recording device receiving unit.
  • a data transmission unit that transmits internal data to the proxy recording device based on the recording device information, and the management server records the remaining memory capacity information notified by the remaining memory capacity notification unit. Based on the capacity information recording unit, the proxy designation request requested by the proxy designation requesting unit, and the remaining memory capacity information recorded by the capacity information recording unit, a free area for recording the internal data is provided.
  • a proxy recording device designating unit for designating the data acquisition device as the proxy recording device, and a proxy recording for transmitting the proxy recording device information to the data acquiring device This is a configuration having a recording device information transmission unit.
  • each data acquisition device Management servers are connected to the same communication network in order to manage the status of the devices.
  • the management server can grasp the remaining memory capacity in each data acquisition device by referring to the information sent from the remaining memory capacity notification means of each data acquisition device to the communication network.
  • each data acquisition device has a limited amount of data (memory capacity) that can be recorded by itself, the data acquisition device that generated a large amount of data has insufficient remaining memory capacity. Then, further recording may not be possible. However, other data acquisition devices connected to the same communication network may still have a sufficient remaining memory capacity. This remaining memory capacity is managed by the management server. Therefore, a data acquisition device that has insufficient remaining memory capacity uses another data acquisition device that has sufficient remaining memory capacity using the management information of the management server. Can be grasped.
  • the data acquisition device is at least one external device (other data acquisition device) having a sufficient remaining memory capacity as a substitute recording device
  • the data generated by the data generator of the local station is transmitted to the proxy recording device based on the search result.
  • the data acquisition device receives data generated inside the external device from the external device via the communication network, and stores it in an empty area on the data recording unit of the local station.
  • the remaining memory capacity decreases on the first data acquisition device, and the second data acquisition device
  • the second data acquisition device is used as the proxy recording device, and the data generated on the first data acquisition device is transferred to the second data via the communication network. Transfer to acquisition device and save to memory on second data acquisition device. Data recorded on behalf of the second data acquisition device can be acquired via a communication network as needed, so all data generated on the first data acquisition device can be saved without loss. can do.
  • the data recording system of the present invention is a data recording system having a plurality of data acquisition devices for acquiring data, the data acquisition device including a data generation unit for generating internal data, To receive other data generated by other data acquisition devices A receiving unit; a data recording unit that records at least one of the internal data generated by the data generating unit and the other data; and remaining memory capacity information relating to a free area of the data recording unit.
  • a remaining memory capacity notifying unit that notifies the other data acquiring device, and other station remaining memory capacity information relating to the remaining memory capacity of the data recording unit in the other data acquiring device notified from the other data acquiring device and the other data acquiring device
  • the other station information recording unit that records the other station device information including the address information of the device, and the other station recorded by the other station information recording unit when there is a problem in the recording of internal data by the data recording unit Designate a substitute recording device that designates a data acquisition device having a free area for recording the internal data as a substitute recording device based on the remaining memory capacity information If, for the previous SL proxy recorder proxy recording device specified by the specifying unit, Ru configured to have a data transmission unit that transmits the internal data.
  • each data acquisition device has a limited amount of data (memory capacity) that can be recorded by itself, the data acquisition device that has generated a large amount of data has insufficient remaining memory capacity. Then, further recording may not be possible. However, other data acquisition devices connected to the same communication network may still have a sufficient remaining memory capacity.
  • the remaining memory capacity in other data acquisition apparatuses can be grasped by managing the information notified by the remaining memory capacity notification means of the corresponding data acquisition apparatus, the data acquisition apparatus in which the remaining memory capacity is insufficient Can identify other data acquisition devices with sufficient remaining memory capacity.
  • the data recording destination changing means on the data acquisition device is provided as at least one external device having a sufficient remaining memory capacity as a substitute recording device when there is a problem in data writing to the data recording unit of the local station.
  • Search for (other data acquisition devices) and search results Based on the above, the data generated by the data generator of the local station is transmitted to the proxy recording device. Further, the proxy recording means on the data acquisition device receives data generated inside the external device from the external device via the communication network, and stores it in a free area on the data recording unit of the local station. .
  • the remaining memory capacity decreases on the first data acquisition device, and the second data acquisition device
  • the second data acquisition device is used as the proxy recording device, and the data generated on the first data acquisition device is transferred to the second data via the communication network. Transfer to acquisition device and save to memory on second data acquisition device. Data recorded on behalf of the second data acquisition device can be acquired via a communication network as needed, so all data generated on the first data acquisition device can be saved without loss. can do.
  • the data generation unit of the data acquisition device includes an imaging unit that captures an image and generates image data.
  • a data acquisition device having a function like a network camera can be configured, which can be used when various monitoring systems are configured.
  • a data recording method of the present invention is a data recording method for controlling a data recording system having a plurality of data acquisition devices for acquiring data and a management server for managing the plurality of data acquisition devices,
  • the data acquisition device includes a data generation step in which internal data is generated in the data acquisition device, a step in which other data generated in the other data acquisition device is received, and a step in which the data generation step is performed. !
  • the data recording step in which at least one of the generated internal data and the other data is recorded, and the remaining memory capacity information regarding the free area of the data recording unit in which the data recording step is performed are the management A remaining memory capacity notifying step to be notified to the server, and a request for requesting the management server to designate a proxy recording device that performs the recording of the internal data when there is an obstacle to the recording of the internal data by the data recording step.
  • a proxy specification request step in which a row specification request is transmitted, and a proxy specified by the management server;
  • the proxy recording device information including address information of the proxy recording device is received from the management server, and the proxy recording device based on the proxy recording device information received by the proxy recording device reception step.
  • the management server records a remaining memory capacity information notified in the remaining memory capacity notifying step 1;
  • Data acquisition having a free area for recording the internal data based on the proxy specification request requested in the proxy specification request step and the remaining memory capacity information recorded in the capacity information recording step
  • a proxy recording device designation step in which a device is designated as the proxy recording device, and the proxy recording device information is transmitted to the data acquisition device.
  • the data recording method of the present invention is a data recording method for controlling a data recording system having a plurality of data acquisition devices for acquiring data, and the data acquisition device is defined in advance.
  • a data generation step in which data is generated when the above conditions are satisfied, a step in which other data generated by one of the other data acquisition devices is received, and an internal data generated in the data generation step.
  • the data recording step in which at least one of the other data is recorded, and the remaining memory capacity information regarding the free area of the data recording unit in which the data recording step is performed are transmitted to other data acquisition devices.
  • the remaining memory capacity notifying step to be notified and the remaining data capacity of the data recording unit in the other data acquiring apparatus to be notified Other station information recording step in which the other station remaining memory capacity information and the address information of the other data acquisition device are recorded, and when the internal data recording in the data recording step is hindered,
  • a data recording device having a free area for recording the internal data is designated as a proxy recording device.
  • the method includes a device specifying step and a step of transmitting the internal data to the proxy recording device specified by the proxy recording device specifying step.
  • a special data recording server for recording large-capacity data or long-time data is provided. Since data loss without connecting to the network can be prevented, the system configuration can be simplified. In other words, if there is a shortage of remaining memory capacity on a specific data acquisition device, the remaining data acquisition device with sufficient remaining memory capacity will record data on behalf of the device, allowing distributed data recording. Data loss can be prevented without connecting a data recording server. In addition, traffic on the communication network can be reduced, and even when traffic on the communication network increases due to communication performed by external devices, data can be recorded efficiently without being significantly affected.
  • FIG. 1 is a block diagram showing a specific configuration of a data recording system according to a first embodiment of the present invention.
  • FIG. 2 is a block diagram showing an example of the internal configuration of the network camera and management server shown in FIG.
  • FIG. 3 is a sequence diagram showing an operation example of the data recording system shown in FIG. 1.
  • FIG. 4 is a block diagram illustrating an internal configuration example of a network camera according to a second embodiment of the present invention.
  • FIG. 5 is a sequence diagram showing an operation example of the data recording system in the second embodiment of the present invention.
  • FIG. 1 is a block diagram showing a specific configuration of the data recording system 100 according to the first embodiment of the present invention.
  • FIG. 2 is a block diagram illustrating an internal configuration example of the network camera 10 and the management server 30 illustrated in FIG.
  • FIG. 3 is a sequence diagram showing an operation example of the data recording system 100 shown in FIG.
  • the data recording system 100 shown in Fig. 1 is configured to capture various subjects at an arbitrary point and to store the obtained image data.
  • the data recording system 100 is used in a financial institution. It is assumed to be used as a monitoring system.
  • the data recording system 100 includes a plurality (n) of network cameras 10 (l) to 10 (n), a browsing terminal 20, a management server 30, and a communication network 40. It consists of and. Each network camera 10 is connected to the communication network 40 via a predetermined communication cable (for example, a LAN (Local Area Network) cable). Similarly, the browsing terminal 20 and the management server 30 are also connected to the communication network 40, respectively.
  • a predetermined communication cable for example, a LAN (Local Area Network) cable
  • the browsing terminal 20 and the management server 30 are also connected to the communication network 40, respectively.
  • the management server 30 performs communication control and information management for the entire system.
  • the browsing terminal 20 is connected to the communication network 40 in preparation for browsing images captured by each network camera 10 and stored in the data recording system 100 as necessary.
  • the browsing terminal 20 for example, it is conceivable to use a personal computer having a communication function.
  • the browsing terminal 20 is normally operated by a predetermined administrator.
  • each network camera 10 and data recording system 100 shown in FIG. 1 performs special control as described later. That is, control is performed so that a plurality of network cameras 10 share a memory with each other in the data recording system 100.
  • each network camera 10 includes an imaging unit 11, a recording unit 12, a memory free space determination unit 13, an image transmission unit 14, an image reception unit 15, and a communication unit. Part 16 is provided.
  • the imaging unit 11 incorporates an imaging device such as a two-dimensional CCD (Charge Coupled Device) image sensor.
  • the imaging unit 11 captures a subject when a predetermined condition is satisfied, and outputs image data. .
  • the conditions for photographing and outputting data are assumed to be when abnormalities are detected or when specific timings occur periodically.
  • various sensors such as an infrared sensor or an acoustic sensor may be used, or a change in an image captured by the imaging unit 11 itself may be detected.
  • the recording unit 12 is a memory device for storing image data. Actually, the recording unit 12 can be written and read like a semiconductor memory or a small hard disk. It is assumed that a recording unit is installed. The recording unit 12 stores image data output from the imaging unit 11 and image data input from the outside. In addition, the recording unit 12 always keeps track of the capacity of an unused storage area, that is, the memory free capacity, on which data is still written on its own recording unit.
  • the memory free space determination unit 13 acquires information on the memory free space from the recording unit 12, and the memory free space Check for deficiencies. Further, the memory free space determination unit 13 notifies the management server 30 of the information on the memory free space acquired from the recording unit 12 via the communication network 40. In addition, the free memory capacity determination unit 13 exchanges data with the communication unit 16 in order to communicate with the management server 30 when the local station (network camera 10) detects a shortage of free memory. Do.
  • the image transmission unit 14 outputs an output from the imaging unit 11 in accordance with an instruction from the memory free space determination unit 13 when the memory free space determination unit 13 detects an insufficient memory free space on its own station.
  • the image data to be transmitted is sent to the communication network 40 addressed to the designated other station (other network camera 10).
  • the image receiving unit 15 receives image data transmitted from another station (other network camera 10) addressed to the own station via the communication network 40, and stores the image data in an empty area of the recording unit 12. Control to write.
  • the communication unit 16 is an interface for performing data communication between the own station and the communication network 40.
  • FTP is used as a protocol for data communication using the communication network 40.
  • a powerful memory free space database 31 and an alternative record management database 32 are provided.
  • the camera free space database 31 on the management server 30 receives the information on the free space of the memory notified by the memory free space determination unit 13 in each network camera 10 connected to the communication network 40, and receives the network camera. Manage every 10th.
  • Each network camera 10 (1) to 10 (n) can be distinguished by, for example, a difference in IP (Internet Protocol) address of the data transmission source.
  • IP Internet Protocol
  • the network camera 10 (2) can also be transferred to the network camera 10 (2) and stored on the network camera 10 (2). That is, instead of the network camera 10 (1) that has insufficient memory capacity, the network camera 10 (2) performs alternative recording (substitute recording) of the image data. By performing such control, loss of image data can be prevented.
  • the alternative recording management database 32 on the management server 30 stores management information regarding alternative recording when each network camera 10 performs alternative recording of image data. Specifically, the substitute recording management database 32 records the transmission source (network camera 10) IP address, transmission destination (network camera 10) IP address, sequence number, and the like related to the image data to be recorded as replacement.
  • the network camera 10 is an example of a data acquisition device.
  • the imaging unit 11 is an example of a data generation unit and an imaging unit.
  • the recording unit 12 is an example of a data recording unit.
  • the memory free capacity determination unit 13 is an example of a remaining memory capacity notification unit.
  • the image transmission unit 14 is an example of a data transmission unit.
  • the image receiving unit 15 is an example of a data receiving unit.
  • the management server 30 is an example of a management server.
  • the camera free capacity database 31 is an example of a capacity information recording unit.
  • the communication network 40 is an example of a communication line.
  • FIG. 3 it is assumed that three network cameras 10 (1), 10 (2), and 10 (3) are connected to the communication network 40.
  • the network camera 10 (1) internal memory free space determination unit 13 communicates information on the current memory free space (memory remaining capacity) in the network camera 10 (1). Send to network 40. This information is input to the management server 30 (step Sl).
  • step SI information on the memory free space in network camera 10 (2) is passed.
  • the information is input to the management server 30 via the communication network 40 (step S2), and the information on the free memory capacity in the network camera 10 (3) is input to the management server 30 via the communication network 40 (step S3).
  • the management server 30 can always grasp the latest available memory capacity for each of the network cameras 10 (1), 10 (2), and 10 (3). Information on the free memory capacity is held in the free camera capacity database 31 together with the IP address of the network camera 10 as the transmission source.
  • the image data generated by each network camera 10 is stored in the recording unit 12 inside the local station (network camera 10). However, if a large amount of image data is recorded, the memory free space on the recording unit 12 is reduced, and further image data cannot be recorded.
  • step S4 it is assumed that the network camera 10 (1) detects a lack of free memory space in its own station (step S4). Therefore, next, an inquiry is made regarding another network camera 10 capable of alternative recording (step S5). That is, the management server 30 is inquired about the network camera 10 of another station that still has sufficient memory capacity.
  • the management server 30 determines that each of the network cameras 10 in the other stations has a memory free capacity of a predetermined value or more based on information stored in the camera free capacity database 31. Alternatively, the IP address information related to the specific network camera 10 having the largest free memory space is notified to the inquiring network camera 10 (1) (step S6).
  • step S6 the network camera 10 (1) is notified of the IP address that identifies the network camera 10 (3).
  • the network camera 10 (1) is image data generated by the local station, but the network camera 10 that performs alternative recording of new image data that cannot be recorded by the local station due to insufficient memory.
  • Send to the IP address of (3) (step S7).
  • the IP address of the transmission source network camera 10 (1) and information related to the generation date and time of the image data are notified as the image file name.
  • the network camera 10 (3) that has received the transferred information writes the image data received under the control of the image receiving unit 15 and information associated therewith to the recording unit 12 of the local station. .
  • the network camera 10 (1) notifies the management server 30 of information necessary for managing the substitute recorded image data (step S8). Specifically, the IP address that represents the network camera 10 (1) that is the transmission source of the image data that has been recorded as a substitute, information about the date and time of image data generation, and the IP that represents the network camera 10 (3) that is the transmission destination of the image data Notify address etc.
  • the management server 30 stores the information notified from the network camera 10 (1) on the alternative record management database 32, and manages information related to the alternative record.
  • step S11 when the administrator or the like wants to view the contents of the image data recorded in the data recording system 100, the processing from step S11 is performed. It is assumed that a browsing request for image data captured by the network camera 10 (1) is generated by an input operation by an administrator or the like to the browsing terminal 20. This request is sent from the browsing terminal 20 and input to the management server 30 (step S11).
  • the management server 30 is a group of images requested by the browsing terminal 20, that is, among the image data photographed by the network camera 10 (1), images for which management information does not exist in the alternative record management database 32.
  • the data camera 10 (1) is requested to transmit data (step S12).
  • the corresponding image data is read from the recording unit 12 of the local station and sent to the communication network 40 addressed to the management server 30 (step S13).
  • the management server 30 sends the image data received from the network camera 10 (1) to the browsing terminal 20 (step S14).
  • the network camera 10 (1) has a memory shortage.
  • the management server 30 refers to the management information existing in the alternative record management database 32, so that the image captured by the network camera 10 (1) in the alternative recorded image data. Data management information is searched, and network camera 10 (3), which is the transmission destination (alternative recording destination) of the corresponding image data, is requested to send image data based on this management information (step S15). .
  • the network camera 10 (3) searches the image data stored in the recording unit 12 of the local station for the image data of the network camera 10 (1) recorded as a substitute. Read and send to the communication network 40 to the management server 30 (step S16
  • the management server 30 sends the image data for the alternative recording that also received the network camera 10 (3) power to the browsing terminal 20 (step S17).
  • the administrator who operates the browsing terminal 20 can acquire and browse all the image data captured by the network camera 10 (1).
  • the network camera 10 that acquires data and the management server 30 that manages the network camera 10 are provided.
  • the network camera 10 includes an imaging unit 10 that generates data when a predetermined condition is satisfied, and an image receiving unit 15 that receives other data generated by the other network camera 10.
  • a recording unit 12 that records at least one of the internal data and other data generated by the imaging unit 10, and a memory free space determination that notifies the management server 30 of the remaining memory capacity information regarding the free area of the recording unit 12. Acting as a proxy for recording internal data to the management server 30 when there is a problem in recording internal data by the recording unit 12 and recording unit 12.
  • a proxy specification request unit for transmitting a proxy specification request for requesting device specification, and a proxy recording device information receiving unit for receiving proxy recording device information including the address information of the proxy recording device specified in the management server 30 from the management server And an image transmission unit 14 that transmits internal data to the substitution recording device based on the substitution recording device information received by the substitution recording device reception unit.
  • the management server 30 includes a memory free space determination unit. Requested by the camera free space database 31 that records the remaining memory capacity information notified by 13 and the proxy specification requesting unit. On the basis of the proxy designation request to be made and the remaining memory capacity information recorded by the camera free capacity database 31.
  • a special recording server for recording large-capacity data and long-term data is provided on the network by having a designation unit and a proxy recording device information transmission unit that transmits proxy recording device information to the network camera 10. The system configuration can be simplified without the need for connection.
  • FIG. 4 is a block diagram illustrating an internal configuration example of the network camera 10 according to the second embodiment of the present invention.
  • FIG. 5 is a sequence diagram showing an operation example of the data recording system 200 according to the second embodiment of the present invention.
  • This embodiment is a modification of the first embodiment of the present invention.
  • elements corresponding to those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
  • a system is configured by connecting n network cameras 10 (1) to 10 (n) to each other via a communication network 40, similarly to the data recording system 100 shown in FIG. ing.
  • the data recording system of this embodiment is the management server shown in FIG.
  • a network camera 10B having a configuration as shown in FIG. As shown in FIG. 4, the network camera 10B includes an imaging unit 11, a recording unit 12, a memory free space determination unit 13, an image transmission unit 14, an image reception unit 15, a communication unit 16, and other power. It has a free memory capacity database 17 and an alternative record management database 18.
  • the network camera 10 in FIG. 2 is greatly different from the network camera 10 in FIG.
  • the contents of control inside the network camera 10B are also slightly changed.
  • the other-purpose Mera free space database 17 and the alternative record management database 18 are respectively stored in the management server 30 shown in FIG. This corresponds to the functions of the free space database 31 and the alternative record management database 32.
  • the other power mela free space database 17 and the alternative record management database 18 are examples of other station information recording units.
  • the network camera 10B (1) internal memory free space determination unit 13 communicates information on the current memory free space (memory remaining capacity) in the network camera 10B (1). Send to network 40. This information is input to each of the other network camera 10B (2) and the network camera 10B (3) (step S21, step S22).
  • steps S21 and S22 information on the free memory capacity in the network camera 10 (2) is input to the other network camera 10B (1) and the network camera 10B (3) via the communication network 40, respectively.
  • Step S23, Step S24 information on the free memory capacity of the network camera 10B (3) is input to the other network camera 10B (1) and the network camera 10B (2) via the communication network 40 ( Step S2 5, Step S 26).
  • each network camera 10B can always grasp the latest available memory capacity for each of the other network cameras 10B connected to the same communication network 40. Information on the available memory capacity is held in the other camera available capacity database 17 together with the IP address of the transmission source network camera 10B.
  • the image data generated by each network camera 10B is stored in the recording unit 12 inside the local station (network camera 10B). However, if a large amount of image data is recorded, the memory free space on the recording unit 12 is reduced, and further image data cannot be recorded.
  • step S27 the network camera 10B (1) detects a lack of free memory capacity in its own station. Therefore, first, the information stored in the other power camera free space database 17 in the other station's other network camera 10B capable of alternative recording is stored. Look up the information and check. That is, the network camera 1 OB of another station that still has a sufficient memory capacity is searched for on the other power memory capacity database 17.
  • the network camera 10B (1) is stored in the other camera memory capacity database 17 of its own station! / Obtain IP address information for each camera 10B or a specific network camera 10B with the most free memory.
  • the IP address that identifies the network camera 10B (3) is acquired from the other camera free space database 17.
  • the network camera 10B (1) is image data generated by the local station. However, the network camera 10B (1) performs alternative recording of new image data that cannot be recorded by the local station due to insufficient memory. Send to the IP address of 3) (step S28). At the same time as the image data, the IP address of the transmission source network camera 10B (1) and information on the generation date and time of the image data are notified as the image file name.
  • Network Camera 10B (1) Force The network camera 10B (3) that has received the transferred information writes the image data received under the control of the image receiving unit 15 and information associated therewith to the recording unit 12 of its own station. .
  • the network camera 10B (1) records information necessary for managing the alternative recorded image data as management information in the alternative recording management database 18 in the local station. Specifically, it represents the IP address representing the network camera 10B (1) that is the transmission source of the image data that has been recorded as a substitute, information about the date and time of image data generation, and the network camera 10B (3) that is the transmission destination of the image data Record the IP address in the alternative record management database 18 (step S28).
  • step S31 when the administrator or the like wants to view the contents of the image data recorded in the data recording system, the processing after step S31 is performed. It is assumed that a browsing request for image data captured by the network camera 10B (1) is generated by an input operation by an administrator or the like to the browsing terminal 20. This request is sent from the browsing terminal 20 and input to the network camera 10B (1) via the communication network 40 (step S31). [0099] The network camera 10B (1) that has received the request from the browsing terminal 20 reads the image data taken by the network camera 10B (1) itself from the recording unit 12 of its own station, and the requesting browsing terminal Transmit to 20 (step S32).
  • the network camera 10B (1) refers to the management information stored in the alternative record management database 18 in its own station, and in the image data photographed by the network camera 10B (1). Confirm the location of the image data that was recorded as a substitute by another network camera 10B. Then, the image data is requested to the network camera 10B (3) which is the transmission destination (alternative recording destination) of the corresponding image data (step S33).
  • the network camera 10B (3) searches the image data stored in the recording unit 12 of the local station for the image data of the network camera 10B (1) recorded as a substitute. Scan and send to network camera 10B (1) to communication network 40 (step S34).
  • the network camera 10B (1) receives the substitute recorded image data from the network camera 10B (3), and then sends the image data to the browsing terminal 20 (step S35).
  • the administrator who operates the browsing terminal 20 can acquire and browse all the image data captured by the network camera 10B (1).
  • the data recording system has a plurality of network cameras 10B for acquiring data, and the network cameras 10B satisfy a predetermined condition.
  • An image capturing unit 11 that generates data, an image receiving unit 15 that receives other data generated by another network camera 10, and at least one of internal data and other data generated by the image capturing unit 11 are recorded.
  • Section 12 and the remaining memory capacity information regarding the free space of the recording section 12 The remaining memory capacity information of the other station regarding the remaining memory capacity of the recording unit 12 in the other network camera 10B that is also notified of the power of the other network camera 10B and the remaining network capacity information of the other network camera 10B
  • the proxy recording device specifying unit for specifying the network camera 10B having a free area for recording internal data as the proxy recording device, and the proxy recording device specifying unit By having an image transmission unit 14 that transmits internal data to the designated proxy recording device, the network
  • the need to connect a special server for recording for recording a management server and a mass data and long term data to manage camera 10B to the network can be simplified structure of a system Nag.
  • the data acquisition apparatus, data recording system, and data recording method of the present invention are The present invention can be applied not only to a monitoring system using a network camera but also to a recording system that records data detected by various measuring devices or various sensors on a network.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Studio Devices (AREA)

Abstract

La présente invention concerne un dispositif d’acquisition de données permettant d’éviter une absence partielle de données et de simplifier la configuration de l’ensemble d’un système. Un système d’enregistrement de données (100) comprend une pluralité de caméras réseau (10) et un serveur d’administration (30). Les caméras réseau (10) signalent au serveur d’administration (30) leur capacité mémoire restante. Si des problèmes se produisent au niveau de l’enregistrement de données, les caméras réseau demandent au serveur d’administration (30) de désigner un dispositif d’enregistrement de remplacement et envoient des données internes à ce dispositif selon les informations relatives au dispositif désigné. En fonction des demandes de désignation de dispositifs de remplacement et de la capacité mémoire restante, le serveur d’administration (30) désigne les caméras réseau (10) ayant de l’espace libre en tant que dispositif d’enregistrement de remplacement et envoie des informations connexes aux caméras réseau (10).
PCT/JP2006/324871 2005-12-13 2006-12-13 Dispositif d’acquisition de donnees, systeme d’enregistrement de donnees et procede d’enregistrement de donnees WO2007069658A1 (fr)

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