JP2016219923A - Video monitoring system and video distribution server - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video monitoring system confirming video data at an arbitrary place and time using a mobile terminal so as to be able to execute monitoring activity, and a video distribution server.SOLUTION: A video distribution server 11 receives from a mobile terminal 20 display request information to display video data, and transmits to a video record terminal device 30 transmission request information of video data corresponding to the display request information. The video record terminal device 30, on receiving the transmission request information of video data from the video distribution server 11, transmits the corresponding video data to the video distribution server. The video distribution server 11 receives the video data from the video record terminal device 30, and distributes the video data to the mobile terminal 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a video monitoring system and a video distribution server for confirming the status of a monitoring target using a mobile terminal.

  An image monitoring system is generally installed that transmits information for notifying the state of a building from a building management server to a portable terminal held by a worker to perform a monitoring activity.

  As a technique for performing monitoring activities using a mobile terminal, for example, Patent Document 1 describes that “when a plant device is detected as abnormal, a mail transmission message indicating an abnormality is created and the transmission statement relates to the abnormal plant device. There is disclosed a “plant monitoring system” in which URL information of a Web page is added to generate transmission information, and the generated transmission information is transmitted to a PDA via a network.

JP 2003-51895 A

  According to the above-mentioned patent document 1, when the occurrence of an abnormality in a building being monitored is detected, the situation of the location where the abnormality has occurred is sent by e-mail to a PDA held by the worker, and both character information and image information are transmitted. It is possible to grasp the abnormalities of the building by displaying with. However, the worker can arbitrarily specify the camera installed in the building, specify the date and time when the specified camera was taken, and display the image information, the situation around the location where the abnormality occurred and the abnormality There is a problem that the situation before and after the occurrence cannot be grasped.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to arbitrarily designate a camera installed in a building by a worker using a mobile terminal, and to set a date and time when the designated camera takes a picture. It is an object of the present invention to provide a video monitoring system and a video distribution server capable of executing a monitoring activity for specifying and confirming video data.

  In order to achieve the above object, the present invention provides a video recording terminal device that acquires and records video data from a plurality of cameras that shoot a monitoring object, a mobile terminal operated by an operator, and a mobile terminal. A video distribution system that distributes the video data in response to a request via a network, wherein the mobile terminal includes a video display unit that can display the video data, the plurality of video data A portable terminal operation unit that accepts an operation for designating a specific camera from the camera and an operation for designating the shooting date and time of the specific camera, and the specific camera shot at the specified shooting date and time according to the two operations A mobile terminal control unit that generates display request information for displaying video data; a mobile terminal communication unit that transmits the display request information to the video distribution server; and A mobile terminal display control unit that displays the video data received from the video distribution server via the network on the video display unit, and the video distribution server is assigned in advance to the mobile terminal, When the result of determination by the distribution availability determination unit and the distribution availability determination unit that determines whether video distribution to the mobile terminal is possible based on the individual identification information that is uniquely identified information, the display A server communication unit that transmits transmission request information of video data corresponding to request information to the video recording terminal device, and when the video data is received from the video recording terminal device, the video data cannot be saved. A distribution processing unit for distributing to the portable terminal, wherein the video recording terminal device has received the transmission request information of the video data from the server communication unit In addition, a network communication unit that transmits the video data corresponding to the transmission request information of the video data to the video distribution server, and when the operator operates the mobile terminal, the video display unit of the mobile terminal In addition, the video data photographed at the photographing date and time by the specific camera is displayed.

  Also, the present invention provides a video recording terminal device that acquires and records video data from a plurality of cameras that shoot a monitoring object, a mobile terminal that generates display request information for displaying the video data, and a network. Connected to the mobile terminal and distributes the video data in response to a request from the mobile terminal, and is assigned to the individual identification information that is pre-assigned to the mobile terminal and uniquely identifies the mobile terminal. Based on the distribution availability determination unit that determines whether or not video distribution to the mobile terminal is possible and the result of determination by the distribution availability determination unit is distribution possible, transmission request information of the video data corresponding to the display request information When the video data is received from the video recording terminal device, the server communication unit that transmits the video data to the video recording terminal device is stored. A distribution processing unit in a format for delivery to the mobile terminal, characterized by comprising a.

  According to the present invention, when the video distribution server receives the display request information for displaying the video data specifying the date and time when the camera specified by the portable terminal operated by the worker is taken, the corresponding video data is recorded. Obtained from the terminal device and transmitted to the mobile terminal. Therefore, a video monitoring system and video distribution in which a worker can arbitrarily specify a camera installed in a building using a mobile terminal, and can execute a monitoring activity for checking video data by specifying a date and time when the specified camera has taken a picture. Server can be provided. Problems, configurations, and effects other than those described above will be clarified by the following embodiments.

1 is an overall configuration diagram of a video monitoring system according to an embodiment. The hardware block diagram of the video delivery server which concerns on this embodiment, a portable terminal, and a video recording terminal device. The functional block diagram which shows the internal structure of the video surveillance system which concerns on this embodiment. Explanatory drawing at the time of confirming the video data of the monitoring target object which concerns on this embodiment. The sequence diagram which shows the flow of the process which the video monitoring system which concerns on this embodiment performs. The flowchart which shows the flow of the process which the video delivery server which concerns on this embodiment performs.

  Hereinafter, a video surveillance system 1 according to an embodiment of the present invention will be described with reference to the drawings. Throughout the drawings, the same components are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is an overall configuration diagram of a video monitoring system 1 according to the present embodiment. In FIG. 1, a video monitoring system 1 includes a video recording terminal device 30 that acquires and records video from cameras 35A, 35B, and 35C installed on different floors of a three-story building 3 that is a monitoring target. A video distribution server 11 installed in a control center 10 that remotely monitors the building 3 and a portable terminal 20 possessed by a worker for confirming the video data 34 are connected via a network 4. The video distribution server 11 may be connected to an input / output device 110 having a calculation function such as a PC (Personal Computer) used by a controller of the control center 10. In the following description, when it is not necessary to distinguish each of the cameras 35A, 35B, and 35C, they are referred to as cameras 35. The camera 35A acquires video data 34A, the camera 35B acquires video data 34B, and the camera 35C acquires video data 34C. In the following description, when it is not necessary to distinguish each of the video data 34A, 34B, and 34C, they are described as video data 34.

  FIG. 2 is a hardware configuration diagram of the video distribution server 11, the portable terminal 20, and the video recording terminal device 30 according to the present embodiment. 2A shows the configuration of the video distribution server 11, FIG. 2B shows the configuration of the mobile terminal 20, and FIG. 2C shows the configuration of the video recording terminal device 30, respectively.

  As shown in FIG. 2A, the video distribution server 11 includes a CPU (Central Processing Unit) 101, a RAM (Random Access Memory) 102, a ROM (Read Only Memory) 103, an HDD (Hard Disk Drive) 104, and I. / F (interface) 105 and bus 106 are included. The CPU 101, RAM 102, ROM 103, HDD 104, and I / F 105 are connected to each other via a bus 106.

  The video distribution server 11 is connected to the network 4 via the I / F 105 and the external communication device 108. The video distribution server 11 is connected to an I / O (input / output device) 110 having an arithmetic function such as a PC installed in the control center 10 as shown in FIG.

  As illustrated in FIG. 2B, the mobile terminal 20 includes a CPU 201, a RAM 202, a ROM 203, an HDD 204, an I / F 205, and a bus 206. The CPU 201, RAM 202, ROM 203, HDD 204, and I / F 205 are connected to each other via a bus 206. The portable terminal 20 acquires the video data 34 from the video distribution server 11 and displays it on a display device such as an LCD (Liquid Crystal Display) via the I / F 205. The portable terminal 20 is connected to an input device such as an operation button or a touch panel that outputs a signal corresponding to the operation via the I / F 205. Accordingly, a display device such as an LCD and an input device such as operation buttons and a touch panel are configured as an I / O 207. The mobile terminal 20 is connected to the network 4 via the I / F 205 and the external communication device 208. The mobile terminal 20 may not have the HDD 204 but may have a storage medium such as an SSD (Solid State Drive) or a flash memory.

  As shown in FIG. 2C, the video recording terminal device 30 includes a CPU 301, a RAM 302, a ROM 303, an HDD 304, an I / F 305, and a bus 306. The CPU 301, RAM 302, ROM 303, HDD 304, and I / F 305 are connected to each other via a bus 306. The video recording terminal device 30 acquires video data 34 from the camera 35 via the I / F 305. Further, it is connected to the network 4 via an external communication device 308 such as an I / F 305 and a router device. Further, a configuration may be employed in which a display device or the like that displays the video data 34 is connected to the I / O 307 via the I / F 305.

  The software configuration of the video monitoring system 1 will be described with reference to FIG. FIG. 3 is a functional block diagram showing the internal configuration of the video monitoring system 1 according to the present embodiment.

  The video distribution server 11 controls the transmission / reception of information via the server control unit 12 that executes control of the video distribution server 11, the server storage unit 13 that stores information transmitted to and received from the video distribution server 11, and the network 4. Server communication unit 14 to perform.

  The server control unit 12 and the server communication unit 14 are configured by executing software programs that realize these functions by hardware configuring the video distribution server 11. The server storage unit 13 is configured by a data storage device, for example, the RAM 102 or the HDD 104, of hardware constituting the video distribution server 11.

  The server control unit 12 requests to perform processing for obtaining the video data 34 based on display request information (details will be described later) for displaying the video data 34 transmitted from the portable terminal 20 operated by the worker. The video data 34 is transferred from the video distribution server 11 to the mobile terminal 20 based on the signal processing unit 12A and individual identification information (which will be described in detail later) that is pre-assigned to the mobile terminal 20 and uniquely identifies the mobile terminal 20. A delivery permission determination unit 12B that determines whether the distribution is possible.

  The server storage unit 13 includes a video data storage unit 13A that stores video data 34 acquired from the video recording terminal device 30 via the network 4, an individual identification information storage unit 13B that stores individual identification information of the mobile terminal 20, and including.

  The server communication unit 14 includes a distribution processing unit 14 </ b> A that performs processing for distributing the video data 34 acquired from the video recording terminal device 30 to the mobile terminal 20 via the network 4.

  The portable terminal 20 includes a portable terminal display control unit 21 that performs control to display information transmitted to and received from the portable terminal 20 on an I / O 207 such as an LCD in a format that can be recognized by the worker, and a portable terminal 20 that the worker performs. A portable terminal operation unit 22 that accepts an operation and generates input information such as a signal, a portable terminal control unit 23 that controls the portable terminal 20, a portable terminal communication unit 24 that transmits and receives information via the network 4, And a portable terminal storage unit 25 that stores information transmitted to and received from the portable terminal 20 and input information. Therefore, the I / O 207 corresponds to a video display unit.

  The mobile terminal display control unit 21, the mobile terminal operation unit 22, the mobile terminal control unit 23, and the mobile terminal communication unit 24 are configured by executing software programs that realize these functions by hardware configuring the mobile terminal 20. The In addition, the mobile terminal storage unit 25 is configured by a data storage device of hardware constituting the mobile terminal 20, for example, a storage medium such as a RAM 202 or an HDD 204, an SSD or a flash memory.

  The video recording terminal device 30 includes a video recording terminal control unit 31 that controls the video recording terminal device 30, a network communication unit 32 that transmits and receives information via the network 4, and a camera that acquires video data 34 from the camera 35. A communication unit 33 and a video recording terminal storage unit 36 for storing video data 34 acquired from the camera 35 are included.

  The video recording terminal control unit 31, the network communication unit 32, and the camera communication unit 33 are configured by executing software programs that realize these functions by hardware configuring the video recording terminal device 30. The video recording terminal storage unit 36 is configured by a data storage device, for example, a RAM 302 or an HDD 304, among hardware constituting the video recording terminal device 30.

  FIG. 4 is an explanatory diagram when the video data 34 of the monitoring target according to the present embodiment is confirmed. When the worker confirms the video data 34 using the mobile terminal 20, the worker causes the video distribution server 11 to authenticate the mobile terminal 20 via the network 4 and acquires the video data 34. In such a case, the worker operates the mobile terminal 20 to designate the camera 35B installed on the second floor of the building 3 so that the monitoring activity for confirming the video data 34B designating the date and time can be executed. This is the gist of the present invention. As illustrated in FIG. 4, the worker operates the screen displayed by the application software preinstalled in the mobile terminal 20, designates the camera 35 </ b> B installed in the building 3, and inputs the shooting date and time. There may be.

  With reference to FIG.5 and FIG.6, the process of the video surveillance system 1 which concerns on this embodiment is demonstrated. FIG. 5 is a sequence diagram showing a flow of processing performed by the video monitoring system 1 according to the present embodiment, and FIG. 6 is a flowchart showing a flow of processing performed by the video distribution server 11 according to the present embodiment.

  First, an overview of processing performed by the video monitoring system 1 will be described with reference to FIG. A worker who performs the monitoring activity on the building 3 operates the portable terminal 20 to input a password or the like, and logs the portable terminal 20 into the video monitoring system 1. Further, the operator operates the mobile terminal 20 to specify which date and time of data to check from the camera 35B that the user wants to check the video from the camera 35 installed in the building 3 and the video data 34B taken by the camera 35B. To do. The portable terminal operation unit 22 receives the operation of the worker at this time and transmits a signal corresponding to the operation. Then, the portable terminal control unit 23 generates display request information for displaying the camera 35B corresponding to the operation performed by the worker and the video data 34B in which the shooting date / time is specified. The display request information is transmitted to the video distribution server 11 by the mobile terminal communication unit 24 (S501).

  Upon receiving the display request information, the video distribution server 11 is assigned to the mobile terminal 20 in advance, and the individual identification information that is information for uniquely identifying the mobile terminal 20 (from the telephone number of the mobile terminal 20, IMEI, and the communication carrier) The personal identification information stored in the individual identification information storage unit 13B is collated with the information (such as the assigned user ID) to authenticate the portable terminal 20 (S502). Authentication in this case refers to specifying that the mobile terminal 20 is the mobile terminal 20 that is permitted to distribute the video data 34 from the video distribution server 11. That is, when the individual identification information of the portable terminal 20 matches the individual identification information stored in the individual identification information storage unit 13B, the portable terminal 20 is permitted to distribute the video data 34 from the video distribution server 11. The terminal 20 is authenticated.

  When the video distribution server 11 receives the display request information from the portable terminal 20 authenticated in S502, the video distribution server 11 transmits transmission request information requesting the video recording terminal device 30 to transmit the video data 34B corresponding to the display request information. (S503). At this time, the video distribution server 11 performs a connection process with the video recording terminal device 30 (S504, details will be described later).

  The video recording terminal device 30 receives the transmission request information from the video distribution server 11 successfully connected by performing the connection process of S504, and transmits the video data 34B corresponding to the transmission request information to the video distribution server 11 (S505). . When receiving the video data 34B corresponding to the transmission request information, the video distribution server 11 transfers the video data 34B to the portable terminal 20 (S506). When the mobile terminal 20 receives the video data 34B corresponding to the transmission request information, the mobile terminal 20 displays the video data 34B on the mobile terminal display control unit 21 (S507).

  Next, details of processing performed by the video distribution server 11 according to the present embodiment will be described with reference to FIG. Each time the video distribution server 11 receives display request information of the video data 34 from the mobile terminal 20 (S601), the distribution availability determination unit 12B assigns a unique request ID and stores it in the server storage unit 13. Then, the server communication unit 14 transmits the numbered request ID and the request acceptance signal to the mobile terminal 20 (S602).

  Next, the request signal processing unit 12A, based on the display request information of the video data 34B, the presence / absence of the acquisition history of the video data 34B and whether the video data 34B corresponding to the display request information is stored in the video data storage unit 13A. It is determined whether or not (S603).

  When all the video data 34B corresponding to the display request information exists in the video data storage unit 13A (S603 / Yes), the request signal processing unit 12A raises a video acquisition completion flag indicating video acquisition completion (S610). When the distribution processing unit 14A receives the request ID transmitted from the mobile terminal 20 and confirms the video acquisition completion flag of the video data 34B of the display request information corresponding to the request ID, the distribution processing unit 14A stores the request ID in the video data storage unit 13A. The extracted video data 34B is extracted and transmitted to the portable terminal 20 (S611). When the distribution processing unit 14A completes the transmission of the video data 34B, the distribution processing unit 14A deletes the request ID stored in the server storage unit 13 (S612).

  When the mobile terminal communication control unit 24 receives the video data 34B transmitted from the video distribution server 11 in S611, the mobile terminal display control unit 21 displays the video data 34B on the video display unit. At this time, the video data 34B is transmitted to the portable terminal 20 in a format that cannot be stored (the video distribution server 11 transmits the video data 34B using an extension that cannot be streamed or stored).

  When the video data 34B corresponding to the display request information does not exist in the video data storage unit 13A (S603 / No), the request signal processing unit 12A performs a connection process with the video recording terminal device 30 via the network 4 (S604). ). At this time, even when only a part of the video data 34B corresponding to the display request information exists, the video distribution server 11 performs the connection process with the video recording terminal device 30 in the same manner as S602 and S603. The request signal processing unit 12A receives connection request information which is information such as a signal requesting connection to the video recording terminal device 30 in order to acquire the video data 34B corresponding to the display request information from the video recording terminal storage unit 36. Send.

  When receiving the connection request information, the video recording terminal control unit 31 determines whether or not the transmission source is the video distribution server 11 based on the IP (Internet Protocol) address or the like of the transmission source of the connection request information. The video recording terminal control unit 31 displays connection enable information when the transmission source IP address of the connection request information matches the IP address of the video distribution server 11, and the transmission source IP address of the video distribution server 11. If it does not match the address, connection disable information is output. In this case, the determination as to whether or not connection is possible may be executed by an external communication device 308 such as a router device connected to the video recording terminal device 30.

  When connection impossible information or connection impossible information cannot be received even after a predetermined time (for example, one minute) has elapsed since the connection impossible information was received from the video recording terminal device 30 or the connection request information was transmitted (S605) / No), the server communication unit 14 transmits connection impossible notification information to the mobile terminal 20. When the portable terminal communication unit 24 receives the connection impossible notification information, the portable terminal display control unit 21 causes the video display unit to display a notification that connection is impossible.

  When the connectable information is received from the video recording terminal device 30 (S605 / Yes), the server communication unit 14 transmits the transmission request information of the video data 34B corresponding to the display request information received from the portable terminal 20 to the video recording terminal device 30. Is transmitted (S606). When receiving the transmission request information, the network communication unit 32 transmits the video data 34B corresponding to the transmission request information to the video distribution server 11 (S607).

  The portable terminal 20 transmits the request ID received in S602 to the video distribution server 11, and whether or not the video distribution server 11 has completed the acquisition of the video data 34B corresponding to the display request information associated with the request ID. Make an inquiry. The request signal processing unit 12A does not raise the video acquisition completion flag until the video data 34B is stored in the video data storage unit 13A. Accordingly, the video acquisition completion flag is not raised, and the distribution processing unit 14A has not completed acquisition of the video data 34B corresponding to the display request information (in other words, the video data 34B corresponding to the transmission request information). (S608 / No), the server communication unit 14 transmits video data acquisition incomplete notification information indicating that acquisition of the video data 34B has not been completed to the mobile terminal 20. When the mobile terminal display control unit 21 receives the video data acquisition incomplete notification information, the mobile terminal display control unit 21 displays a message such as “video data is being acquired” on the video display unit. By confirming this message, the worker can recognize that the video data 34B is being acquired.

  When the server communication unit 14 completes the reception of the video data 34B (S608 / Yes), the server communication unit 14 stores the video data 34B in the video data storage unit 13A (S609). When the storage of the video data 34B is completed, the request signal processing unit 12A raises a video acquisition completion flag indicating video acquisition completion (S610). Upon confirming the start of the video acquisition completion flag, the distribution processing unit 14A determines that the acquisition of the video data 34B of the display request information corresponding to the request ID transmitted from the mobile terminal 20 has been completed, and adds the display request information to the display request information. The corresponding video data 34B is extracted and transmitted to the portable terminal 20 (S611).

  When the mobile terminal display control unit 21 receives the video data 34B distributed from the video distribution server 11 in S611, the mobile terminal display control unit 21 displays the video data 34B on the video display unit. At this time, the video data 34B is transmitted to the portable terminal 20 in a format that cannot be stored (the video distribution server 11 transmits the video data 34B using an extension that cannot be streamed or stored).

  The distribution processing unit 14A is stored in the server storage unit 13 when connection to the video recording terminal device 30 is not possible (S605 / No) or when the mobile terminal 20 completes transmission of the video data 34B (S506). The request ID is deleted (S612), and a series of processing is terminated. And it waits until the next display request information is received from the portable terminal 20.

  As described above, according to the present embodiment, when the video data 34 is confirmed using the mobile terminal 20, the worker authenticates the mobile terminal 20 with the video distribution server 11 via the network 4, and the camera. 35B is designated, and an operation for designating the date and time when the camera 35B is photographed is performed to acquire the video data 34B. Therefore, it is possible to perform a monitoring activity in which the worker designates the camera 35B installed in the building 3 using the mobile terminal 20, and designates the date and time when the camera 35B is photographed to confirm the video data 34B. Furthermore, by acquiring the video data 34B by specifying the time before and after the occurrence of an abnormality, it is possible to accurately estimate the change in the situation before and after the occurrence of the abnormality. It is possible to provide the video surveillance system 1 with improved specific accuracy and improved crime prevention.

  Further, the video data 34 acquired by the request signal processing unit 12A from the video recording terminal device 30 is a part of the video data 34 that is not stored in the video data storage unit 13A. Therefore, it is only necessary to acquire the video data 34B that is not stored in response to the display request information of the video data 34B in which the designation of the shooting date and time of the video data 34B taken by the same camera 35B is extended. Can be displayed.

  Furthermore, the request ID is unique and is deleted from the server storage unit 13 when the video data 34B is returned to the mobile terminal 20 or when communication between the mobile terminal 20 and the video distribution server 11 is interrupted. Therefore, the request ID can be composed of a simple one having a small number of characters, and requests from a plurality of portable terminals 20 can be processed simultaneously.

  In addition, since the video data 34B is displayed on the video display unit without being stored in the mobile terminal storage unit 25, the video data 34B is not stored in the mobile terminal 20. Therefore, even when the mobile terminal 20 is lost, the risk of leakage of the video data 34B can be reduced.

  The above is merely exemplary embodiments of the present invention and is not intended to limit the present invention. Various modifications that do not depart from the spirit of the present invention are included in the present invention. For example, when a plurality of cameras 35 are installed in the video surveillance system 1, the worker operates the mobile terminal 20 to designate the cameras 35A and 35B and acquire the video data 34A and 34B. Good. In the case of such a configuration, it is possible to check the video data 34 obtained by photographing the situation of the building 3 from various places, and it is possible to provide the video surveillance system 1 with improved crime prevention.

DESCRIPTION OF SYMBOLS 1 ... Video surveillance system 3 ... Building 4 ... Network 10 ... Control center 11 ... Video distribution server 12 ... Server control part 12A ... Request signal processing part 12B ... Distribution Availability determination unit 13 ... server storage unit 13A ... video data storage unit 13B ... individual identification information storage unit 14 ... server communication unit 14A ... distribution processing unit 20 ... mobile terminal 21 ... -Mobile terminal display control unit 22-Mobile terminal operation unit 23-Mobile terminal control unit 24-Mobile terminal communication unit 25-Mobile terminal storage unit 30-Video recording terminal device 31- Video recording terminal control unit 32 ... network communication unit 33 ... camera communication unit 34 ... video data 34A ... video data 34B of camera 35A ... video data 34C of camera 35B ... of camera 35C Video Over data 35 ... camera 35A ... 3F camera 35B ... 2F camera 35C of ... 1F camera 36 ... video recorder storage unit 110 ... control center of the I / O of
101, 201, 301 ... CPU
102, 202, 302... RAM
103, 203, 303 ... ROM
104, 204, 304... HDD
105, 205, 305 ... I / F
106, 206, 306... Buses 207, 307..
108, 208, 308 ... External communication device

Claims (5)

A video recording terminal device that acquires and records video data from a plurality of cameras that photograph the monitoring object, a portable terminal operated by an operator,
A video distribution system that distributes the video data in response to a request from the mobile terminal, and is connected via a network;
The portable terminal is
A video display unit capable of displaying the video data;
A portable terminal operation unit that receives an operation of designating a specific camera from the plurality of cameras and an operation of designating a shooting date and time of the specific camera;
A portable terminal control unit that generates display request information for displaying video data captured by the specific camera at the specified shooting date and time according to the two operations;
A portable terminal communication unit that transmits the display request information to the video distribution server;
A portable terminal display control unit that displays the video data received from the video distribution server via the network on the video display unit;
With
The video distribution server is
A distribution availability determination unit that determines whether video distribution to the mobile terminal is possible based on individual identification information that is pre-assigned to the mobile terminal and uniquely identifies the mobile terminal;
A server communication unit for transmitting transmission request information of video data corresponding to the display request information to the video recording terminal device when a result of determination by the distribution permission determination unit is distributable;
A delivery processing unit that delivers the video data to the portable terminal in a format that cannot be stored when the video data is received from the video recording terminal device;
With
The video recording terminal device
A network communication unit that transmits the video data corresponding to the transmission request information of the video data to the video distribution server when the transmission request information of the video data is received from the server communication unit;
Video monitoring characterized in that an operator operates the mobile terminal to display the video data taken at the shooting date and time by the specific camera on the video display unit of the mobile terminal. system. The video distribution server is
A video data storage unit for storing the video data;
The server communication unit
The transmission request information corresponding to non-existing video data is transmitted to the video recording terminal device when video data corresponding to the display request information does not exist in the video data storage unit. The video surveillance system according to 1. The delivery permission determination unit
Each time the display request information is received, a unique ID is assigned,
The delivery processing unit
The video surveillance system according to claim 1, wherein the unique ID is deleted when transmission of video data corresponding to the display request information to the portable terminal is completed. The delivery permission determination unit
Each time the display request information is received, a unique ID is assigned,
The delivery processing unit
The video surveillance system according to claim 1, wherein the unique ID is deleted when connection with the portable terminal is impossible. Connected via a network to each of a video recording terminal device that acquires and records video data from a plurality of cameras that shoot a monitoring object, and a mobile terminal that generates display request information for displaying the video data,
A video distribution server for distributing the video data in response to a request from the mobile terminal;
A distribution availability determination unit that determines whether video distribution to the mobile terminal is possible based on individual identification information that is pre-assigned to the mobile terminal and uniquely identifies the mobile terminal;
A server communication unit for transmitting transmission request information of video data corresponding to the display request information to the video recording terminal device when a result of determination by the distribution permission determination unit is distributable;
A delivery processing unit that delivers the video data to the portable terminal in a format that cannot be stored when the video data is received from the video recording terminal device;
A video distribution server comprising: