JP2021034860A - Wearable camera, wearable camera system, and video distribution method - Google Patents

Abstract

To provide a wearable camera capable of stably distributing video data captured by the wearable camera to a police station depending on an occurrence of an event regarding a police officer's duties while suppressing the increase in power consumption of a built-in battery.SOLUTION: The wearable camera includes: an imaging unit that is worn by a policeman for picking up images of a subject positioned in front of the policeman; a wide area communication unit that performs wide-area radio communication with a police station server managed by a police station using a wide-area communication network; an input unit that receives an input operation that represents an occurrence of an emergency event; and a control unit that permits the use of wide-area radio communication depending on the input operation. The wide-area communication unit transmits captured video data of the subject to the police station server via the wide area radio communication.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to wearable cameras, wearable camera systems and video distribution methods.

Patent Document 1 describes a technique in which a user changes the settings of a security terminal device and controls threats while checking the status of each security terminal device at a monitored base through a multifunctional mobile terminal device such as a smartphone on the go. It is disclosed. Specifically, passive sensors, shutter sensors, infrared sensors, access control devices, threatening fog injection devices, threatening lights, web cameras with microphones, and threatening speakers are connected to routers as security terminal devices at the monitored bases, and the Internet network. And is connected to a multifunctional mobile terminal device via a mobile phone network. This multifunctional portable terminal device monitors the detection signals from passive sensors, shutter sensors, and infrared sensors, and when an abnormality such as illegal intrusion is detected, the corresponding access control device, threatening fog injection device, threatening light, etc. Activate a web camera with a microphone and a menacing sensor.

Japanese Unexamined Patent Publication No. 2014-026308

By the way, in recent years, in order to efficiently support the work of police officers or guards, the operation of having police officers wear wearable cameras during regular patrols or in emergencies (for example, when rushing to the scene of an incident) has been promoted. .. Hereinafter, in order to make the explanation easier to understand, the work of a police officer will be described as an example, but it may be applied to the work of a user such as a security guard instead of a policeman. The wearable camera has a built-in battery as a power source, but always captures the subject during use (for example, during patrol or in an emergency). Therefore, it is necessary to take technical consideration so that the power consumption of the battery does not become larger than necessary so that the situation that the battery runs out on the way and the image cannot be taken occurs. Patent Document 1 does not disclose the above-mentioned technical consideration.

On the other hand, according to the image captured by the wearable camera (hereinafter referred to as "captured image"), it is possible to grasp the surrounding situation of the police officer's position at an early stage. It is a valuable source of information for analysts. It is hoped that such captured images will be delivered from the wearable camera to the police station as soon as possible. Therefore, it is considered that there is room for improvement in the prior art in that it is required to effectively distribute the captured image of the wearable camera while taking care not to exceed the power consumption of the battery.

This disclosure was devised in view of the conventional circumstances described above, suppresses the increase in power consumption of the built-in battery, and adapts the captured image data of the wearable camera to the police station in response to the occurrence of an event related to the work of the police officer. It is an object of the present invention to provide a wearable camera, a wearable camera system, and a video distribution method for distribution.

The present disclosure is a wearable camera worn by a police officer, and is a wide area wireless communication using a wide area communication network between an imaging unit that images a subject in front of the police officer and a police station server managed by the police station. The wide area communication unit includes a wide area communication unit that performs the operation, an input unit that accepts an input operation indicating the occurrence of an emergency event, and a control unit that permits the use of the wide area wireless communication in response to the input operation. Provided is a wearable camera that transmits captured image data of the subject to the police station server by the wide area wireless communication.

Further, the present disclosure is a video distribution method executed by a wearable camera worn by a police officer, which captures an image of a subject in front of the police officer, accepts an input operation indicating the occurrence of an emergency event, and responds to the input operation. The police station server managed by the police station is permitted to use the wide area wireless communication using the wide area communication network, and the captured image data of the subject is transmitted to the police station server by the wide area wireless communication. Provide a video distribution method.

Further, the present disclosure is a wearable camera worn by a police officer, and is a wide area using a wide area communication network between an imaging unit that captures a subject in front of the police officer and a police station server managed by the police station. A wide-area communication unit that performs wireless communication, a short-range communication unit that performs short-range wireless communication between a mobile terminal possessed by the police officer, and the wide-area radio transmitted from the police station server via the mobile terminal. The wide area communication unit provides a wearable camera that includes a control unit that permits the use of the wide area wireless communication in response to a communication use instruction, and transmits the captured image data of the subject to the police station server. ..

Further, the present disclosure is a wearable camera system in which a wearable camera worn by a police officer and a police station server managed by the police station are communicably connected, and the wearable camera is a subject in front of the police officer. Is imaged and short-range wireless communication is performed with the mobile terminal possessed by the police officer, and the police station server issues an instruction to use wide area wireless communication with the police station server using the wide area communication network. The wearable camera sends the instruction to the mobile terminal, receives the instruction to use the wide area wireless communication by the short-range wireless communication via the mobile terminal, and receives the instruction to use the wide area wireless communication in response to the instruction to use the wide area wireless communication. Provided is a wearable camera system that permits the use of the subject and transmits the captured image data of the subject to the police station server by the wide area wireless communication.

Further, the present disclosure is a video distribution method executed by a wearable camera worn by a police officer, and can execute wide area wireless communication using a wide area communication network with a police station server managed by the police station. Yes, the subject in front of the police officer is imaged, short-range wireless communication is performed with the mobile terminal possessed by the police officer, and the instruction to use the wide area wireless communication sent from the police station server is transmitted to the mobile terminal. The police station server receives the short-range wireless communication via the terminal, permits the use of the wide-area wireless communication in response to the instruction to use the wide-area wireless communication, and obtains the captured image data of the subject by the wide-area wireless communication. Provides a video distribution method to send to.

Further, the present disclosure is a wearable camera system in which different wearable cameras worn by each of a plurality of police officers and a police station server managed by the police station are communicably connected to each other, and the wearable camera is described as described above. The subject in front of the police officer is imaged, short-range wireless communication is performed with the relay device placed in the police vehicle, and the police station server communicates with the relay device using a wide area radio network. Communication is feasible, the wearable camera is instructed to use the wide area wireless communication to the relay device, and the wearable camera sends the instruction to use the wide area wireless communication to the relay device via the relay device. A wearable camera system that receives by communication, permits the use of the wide area wireless communication in response to an instruction to use the wide area wireless communication, and transmits the captured image data of the subject to the police station server by the wide area wireless communication. provide.

Further, the present disclosure is a video distribution method executed by a wearable camera system in which different wearable cameras worn by each of a plurality of police officers and a police station server managed by the police station are communicably connected to each other. , The subject in front of the police officer is imaged, short-range wireless communication is performed with the relay device arranged in the police vehicle, and a wide area using the wide area communication network between the police station server and the relay device. By wireless communication, the instruction to use the wide area wireless communication is sent to the relay device, the instruction to use the wide area wireless communication is received by the short range wireless communication via the relay device, and the instruction to use the wide area wireless communication is used. Accordingly, the present invention provides a video distribution method that permits the use of the wide area wireless communication and transmits the captured image data of the subject to the police station server by the wide area wireless communication.

Further, the present disclosure is a wearable camera worn by a police officer, and includes an imaging unit that captures a subject in front of the police officer and an analysis unit that extracts metadata of characteristic objects reflected in the captured image data of the subject. , Wide-area radio using a wide-area communication network between a short-range communication unit that performs short-range wireless communication with a mobile terminal possessed by the police officer and an external storage device or a police station server managed by a police station. The wide area communication unit includes a wide area communication unit that performs communication and a control unit that permits the use of the wide area wireless communication, and the wide area communication unit obtains the captured image data of the subject and the corresponding metadata at a predetermined timing. Use of the wide area wireless communication transmitted to an external storage device and transmitted from the police station server that acquired the captured image data and the metadata from the external storage device via the mobile terminal. In response to the instruction, the wide area communication unit permits the use of the wide area wireless communication, and the wide area communication unit provides a wearable camera that transmits the captured image data of the subject to the police station server by the wide area wireless communication.

Further, the present disclosure is a wearable camera system in which a wearable camera worn by a police officer and a police station server managed by the police station are communicably connected, and the wearable camera is an external storage device or a police station. It is possible to execute wide area wireless communication using a wide area communication network with the police station server managed by the police officer, perform short range wireless communication with the mobile terminal possessed by the police officer, and in front of the police officer. The metadata of the characteristic object reflected in the captured image data of the subject is extracted, the use of the wide area wireless communication is permitted at a predetermined timing, and the captured image data of the subject and the corresponding metadata are stored in the external storage device. The police station server acquires the captured image data and the metadata from the external storage device, and based on the metadata, the police station server issues an instruction to use the wide area wireless communication via the mobile terminal. The data is transmitted to the wearable camera, and the wearable camera permits the use of the wide area wireless communication in response to the instruction to use the wide area wireless communication sent from the police station server via the mobile terminal, and the wearable camera permits the use of the wide area wireless communication. Provided is a wearable camera system that transmits captured video data to the police station server by the wide area wireless communication.

Further, the present disclosure is a video distribution method executed by a wearable camera worn by a police officer, which performs short-range wireless communication with a mobile terminal possessed by the police officer and performs short-range wireless communication with the subject in front of the police officer. Extracts the metadata of characteristic objects reflected in the captured video data, and permits the use of wide area wireless communication using a wide area communication network with an external storage device or a police station server managed by the police station at a predetermined timing. Then, the captured image data of the subject and the corresponding metadata are transmitted to the external storage device by the wide area wireless communication, and the captured image data and the metadata are acquired from the external storage device. In response to the instruction to use the wide area wireless communication sent via the mobile terminal, the use of the wide area wireless communication is permitted, and the captured image data of the subject is transmitted to the police station server by the wide area wireless communication. Provide a video distribution method.

According to the present disclosure, an increase in power consumption of the built-in battery can be suppressed, and image data captured by a wearable camera can be adaptively distributed to a police station in response to an event related to the work of a police officer.

Schematic explanatory view showing a system configuration example of the wearable camera system according to the first embodiment Block diagram showing a hardware configuration example of a wearable camera Block diagram showing hardware configuration examples of in-vehicle PC and client PC Block diagram showing a hardware configuration example of a common trigger box Block diagram showing a hardware configuration example of the headquarters server A sequence diagram showing a first operation example relating to distribution of captured video data of the wearable camera system according to the first embodiment in chronological order. A sequence diagram showing a second operation example related to distribution of captured video data of the wearable camera system according to the first embodiment in chronological order. A sequence diagram showing a third operation example related to distribution of captured video data of the wearable camera system according to the first embodiment in chronological order. Diagram showing an example of a playback display screen on a client PC A sequence diagram showing a fourth operation example related to distribution of captured video data of the wearable camera system according to the first embodiment in chronological order.

Hereinafter, embodiments in which the wearable camera, the wearable camera system, and the video distribution method according to the present disclosure are specifically disclosed will be described in detail with reference to the drawings as appropriate. However, more detailed explanation than necessary may be omitted. For example, detailed explanations of already well-known matters and duplicate explanations for substantially the same configuration may be omitted. This is to avoid unnecessary redundancy of the following description and to facilitate the understanding of those skilled in the art. It should be noted that the accompanying drawings and the following description are provided for those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

FIG. 1 is a schematic explanatory view showing a system configuration example of the wearable camera system 1 according to the first embodiment. The wearable camera system 1 has a configuration in which various devices used in the field (Field) and various devices arranged in the police station (Police Station) are connected to each other so as to be able to communicate with each other via the network NW1. Further, the wearable camera system 1 may be configured to further include the online storage OST1. The network NW1 is a wireless communication network, for example, a wide area wireless communication network such as an Internet network, an intranet network, or a mobile phone network. However, the network NW1 may be a wired communication network.

As shown in FIG. 1, the various devices used at the site are a wearable camera 10 worn by a police officer (an example of a user) arriving at the site and a smartphone 40 (mobile phone) that the police officer possesses for contacting the police station. An example of a terminal) and an in-vehicle camera system 50 mounted in a police vehicle VC1 such as a police car arriving at the scene.

The wearable camera 10 is attached to a police uniform and captures a situation in front of the police (for example, a situation at the scene) as a subject. The wearable camera 10 is sometimes referred to as a BWC (Body Worn Camera). The scene is, for example, the point where the incident occurred, or the point where the suspect is present or standing up. The wearable camera 10 pre-records (that is, buffers the captured video data for a certain period of time (for example, 3 minutes)) and records (that is, records) the captured video data in the storage unit 15 (see FIG. 2). Further, although the details will be described later, the wearable camera 10 can execute wide area wireless communication (for example, LTE (Long Term Evolution) communication), and captures video data by LTE communication at a required timing to the headquarters via the network NW1. Send to the server.

Further, the wearable camera 10 can execute short-range wireless communication with the smartphone 40. Here, the short-range wireless communication is, for example, BLE (Bluetooth (registered trademark) Low Energy) communication or wireless LAN communication such as Wifi (registered trademark). Since the power consumption of the wearable camera 10 is smaller in BLE communication and wireless LAN communication than in LTE communication, it is suitable for wireless communication between the wearable camera 10 and the smartphone 40 located within a short distance. The subject of the wearable camera 10 may include not only a person but also a surrounding vehicle, a scene of an incident, and a crowd (so-called rubbernecking horse) crowding near the scene.

The smartphone 40 has a telephone function and a wireless communication function (for example, communication with a headquarters server using wide area wireless communication such as LTE), and is used, for example, at the time of emergency contact from a police station or emergency contact to a police station. In addition, the smartphone 40 can execute short-range wireless communication (see above) with the wearable camera 10. The smartphone 40 displays and reproduces the captured image data sent from the wearable camera 10 or the in-vehicle camera 51 according to the operation of the police officer, and edits the captured image data such as adding attribute information to the captured image data. The attribute information may be, for example, a case type that directly or indirectly suggests the content of the captured image. The smartphone 40 may have a tethering function, and the tethering function is used to transmit captured video data sent from each of the wearable camera 10 and the in-vehicle camera 51 via wide area wireless communication (for example, network NW1). It may be transmitted to the headquarters server by LTE communication).

The in-vehicle camera system 50 is also referred to as an ICV (In Car Video) system, and has one or more in-vehicle cameras 51, an in-vehicle PC 52, and an in-vehicle recorder 53. The in-vehicle camera system 50 captures the situation at the site where the police vehicle VC1 arrives with the in-vehicle camera 51, and records (that is, records) the captured image data in the in-vehicle recorder 53. The in-vehicle camera 51, the in-vehicle PC 52, and the in-vehicle recorder 53 are connected by wire so that they can communicate with each other, but they may be connected wirelessly. Further, the vehicle-mounted camera system 50 (for example, the vehicle-mounted recorder 53) and the wearable camera 10 may be connected by a wire (for example, a USB cable compatible with USB (Universal Social Bus)) so as to be able to communicate with each other. Further, the in-vehicle camera system 50 may be configured to further include a common trigger box 54 mounted on the police vehicle VC1.

The in-vehicle camera 51 is, for example, a front camera attached so as to be able to image the front of the police vehicle VC1, a side camera attached so as to be able to image the side direction of the police vehicle VC1, and a rear camera attached so as to be able to image the rear of the police vehicle VC1. It may be at least one of the rear cameras. The vehicle-mounted camera 51 sends the captured video data to the vehicle-mounted recorder 53. This captured image data is recorded in the in-vehicle recorder 53.

The vehicle-mounted PC 52 controls the operations of the vehicle-mounted camera 51 and the vehicle-mounted recorder 53 in response to the operation of the police officer. Further, the vehicle-mounted PC 52 may read, display, and reproduce the captured video data captured by each of the one or more wearable cameras 10 and the vehicle-mounted camera 51 from the vehicle-mounted recorder 53 by the operation of the police officer. As a result, the police officer who uses the in-vehicle PC 52 can easily view the captured images of the site captured by one or more wearable cameras 10 and the in-vehicle camera 51 in the same time zone, and can confirm the situation of the site and the like in a wide area. You can improve your own work efficiency.

The in-vehicle recorder 53 has a recording device such as an HDD (Hard Disk Drive) or an SSD (Solid State Drive), and records the captured image data captured by each of one or more wearable cameras 10 and the in-vehicle camera 51 in the recording device. To do. The in-vehicle PC 52 reads out the captured image data captured by the wearable camera 10 from the in-vehicle recorder 53 by the operation of the police officer, and reproduces the captured image of the wearable camera 10 independently in the default application installed in the in-vehicle PC 52. , The attribute information of the captured image may be added in the application. Similarly, the in-vehicle PC 52 reads out the captured image data captured by the in-vehicle camera 51 from the in-vehicle recorder 53 by the operation of the police officer, and in the default application installed in the in-vehicle PC 52, the in-vehicle camera 51 independently captures the image. It may be reproduced or attribute information of the captured image may be added in the application.

The common trigger box 54 supplies power to various devices mounted in the police vehicle VC1 including the on-board camera system 50. The common trigger box 54 includes various devices mounted on the police vehicle VC1 (for example, a rotation warning light (not shown), an acceleration sensor (not shown), a siren (not shown), and an in-vehicle camera system 50 (for example, an in-vehicle recorder 53). ) By wire (for example, GPIO (physical cable) or LAN cable) or wirelessly, respectively, to control the operation of these devices. Further, the common trigger box 54 performs short-range wireless communication (for example, BLE communication or wireless LAN communication) with the wearable camera 10. Further, the common trigger box 54 performs wireless communication (for example, wide area wireless communication such as LTE communication) with the headquarters server (see below) arranged in the police station via the network NW1.

When the common trigger box 54 acquires an operation start signal from, for example, a rotation warning light or a siren, the common trigger box 54 sends a recording start or recording stop control signal to at least one of the wearable camera 10 and the in-vehicle camera system 50 connected to the common trigger box 54. May be sent. As a result, at least one of the wearable camera 10 and the in-vehicle camera system 30 operates in response to the control signal from the common trigger box 54, for example, with the start of rotation of the rotation warning light or the audio output of the siren, and the captured video data. You can start and stop recording.

As shown in FIG. 1, various devices arranged in the police station include a communication device RT1, a headquarters server (an example of a police station server), a data center console CC1, and a client PC 90. The communication device RT1, the headquarters server, the data center console CC1, and the client PC 90 are connected by wire or wireless so as to be able to communicate with each other.

The communication device RT1 has a gateway function of the network in the police station, and communicates with the network NW1 (for example, wide area wireless communication). For example, the communication device RT1 performs wide area wireless communication with the wearable camera 10, the smartphone 40, or the common trigger box 54 via the network NW1.

The headquarters server includes a dispatch server 60, a metainfo server 80, and a content server 70. In addition to these servers, the headquarters server may further include other servers (not shown) located in the police station.

The dispatch server 60 dispatches the police to the site (for example, the place where the incident occurred), schedules the patrol of the police, gives instructions for deploying the police, creates a deployment plan, and supports the deployment work. The dispatch server 60 registers and stores the identification information of the police officer, the identification information of the police vehicle VC1 and the map data in the jurisdiction area in advance, and acquires the respective position information of the police officer and the police vehicle VC1 to obtain the police officer's identification information. Perform the process for deployment. For example, the dispatch server 60 acquires the position information of the wearable camera 10 worn by each of one or more police officers dispatched for patrol or the like, and superimposes the position information on the map data in the jurisdiction area to plot the police officer deployment screen ( (Not shown) is generated. The data center console CC1 or the individual client PC 90 can display the police deployment screen (see above) generated by the dispatch server 60.

The metainfo server 80 acquires metadata of characteristic objects (see below) that appear in captured video data analyzed by different wearable cameras 10 worn by each of the plurality of police officers. The metainfo server 80 may acquire the metadata of the characteristic object and the corresponding captured image data as a set. The metainfo server 80 analyzes this metadata and executes a process of identifying a suspect such as an incident. For example, when the suspect information including the information on the appearance of the suspect in the case or the information on the vehicle on which the suspect has boarded for escape is grasped in advance, the meta info server 80 is a meta from the wearable camera 10. Match the data with the suspect information and identify the suspect based on the metadata that matches the suspect information. When the metainfo server 80 identifies the suspect, it generates and transmits to each wearable camera 10 an LTE permission notification for instructing the wearable camera 10 to transmit captured video data using LTE communication.

The content server 70 stores captured image data captured by different wearable cameras 10 worn by each of the plurality of police officers in association with the identification information of the wearable camera 10. The captured video data is provided with the generation date and time of the captured video data (in other words, the date and time when the image was captured) as attribute information. The content server 70 may be configured as a server integrated with the metainfo server 80.

The data center console CC1 (an example of a display device) is configured by using, for example, a large screen display or a plurality of displays. The data center console CC1 is a display device provided in a command headquarters (for example, a department that performs deployment work such as dispatching police officers) located in a police station, and is, for example, various information collected in a jurisdiction area, described above. Display the police deployment screen (not shown).

The client PC 90 (an example of a display device) is a terminal computer connected to the data center console CC1 and is used by an analyst (police officer) who analyzes the situation around the scene in the police station. The client PC 90, for example, confirms the on-site situation, monitors captured video data, receives a report, transmits a command, and the like.

The online storage OST1 as an example of the external storage device is a storage (recording device) connected to the network NW1, and is a feature reflected in captured image data analyzed by different wearable cameras 10 worn by, for example, a plurality of police officers. Record the metadata of the target object (see below). Further, the online storage OST1 may record the metadata of the characteristic object and the corresponding captured image data as a set.

FIG. 2 is a block diagram showing a hardware configuration example of the wearable camera 10. The wearable camera 10 includes an imaging unit 11, a GPIO 12 (General Purpose Input / Output), a RAM 13 (Random Access Memory), a ROM 14 (Read Only Memory), and a storage unit 15. The wearable camera 10 includes an EEPROM 16 (Electrically Erasable Project ROM), an RTC 17 (Real Time Clock), and a GNSS (Global Navigation Satellite System) receiving unit 18. The wearable camera 10 includes an MCU 19 (Micro Controller Unit), a BLE communication unit 21A, a WLAN communication unit 21B, an LTE communication unit 21C, a USB interface 22, a contact terminal 23, a power supply unit 24, and a battery 25. Including. In the attached drawings, the interface is abbreviated as "I / F".

The wearable camera 10 includes a recording switch SW1, a snapshot switch SW2, a communication mode switch SW3, an attribute information imparting switch SW4, and a wireless registration switch SW5.

The wearable camera 10 includes three LEDs 26a, 26b, 26c (Light Mission Diode), a vibrator 27, an audio output unit 28, a microphone 29A (see microphone 117 in FIG. 2), a speaker 29B, and an earphone terminal 29C. including. The LEDs 26a, 26b, 26c, the vibrator 27, and the voice output unit 28 function as an example of a notification unit that notifies the user.

The image pickup unit 11 includes an image pickup lens and a solid-state image sensor using a CCD (Charge Coupled Device) type image sensor or a CMOS (Complementary Metal Oxide Semiconductor) type image sensor. The imaging unit 11 outputs the data of the captured image of the subject obtained by the imaging to the MCU 19.

The detection terminal 23T of the contact terminal 23 is a terminal in which a voltage change occurs when the wearable camera 10 is placed on a charging stand (not shown) or removed from the charging stand (not shown). The detection terminal 23T of the contact terminal 23 is connected to the AD converter CV. The signal indicating the voltage change of the detection terminal 23T is converted into a digital signal by the AD converter CV, and the digital signal is input to the MCU 19 via the I2C20.

GPIO12 is a parallel interface. The GPIO12 includes a recording switch SW1, a snapshot switch SW2, a communication mode switch SW3, an attribute information assignment switch SW4, a wireless registration switch SW5, an LED26a, 26b, 26c, a vibrator 27, an audio output unit 28, a microphone 29A, a speaker 29B, and an earphone. Each of the terminals 29C is connected. The GPIO 12 inputs and outputs signals between these various electronic components and the MCU 19.

The microphone 29A (see the microphone 117 in FIG. 2) picks up the sound around the wearable camera 10 and outputs the sound data of the picked up sound to the MCU 19 via the GPIO12. The microphone 29A may be a built-in microphone housed in the housing of the wearable camera 10 or a wireless microphone wirelessly connected to the wearable camera 10. In the case of a wireless microphone, the police can attach it to any location to improve sound collection.

The audio output unit 28 outputs an audio signal related to the operation of the wearable camera 10 under the instruction of the MCU 19. The voice output unit 28 reads the voice data having the voice of the default message stored in the ROM 14 or the like in advance, and outputs the voice signal based on the voice data from the speaker 29B. The earphone terminal 29C outputs an audio signal output from the audio output unit 28 to the earphone connected to the earphone terminal 29C. The speaker 29B inputs an audio signal output from the audio output unit 28 and outputs the audio signal.

Further, the AD converter CV is connected to the MCU 19 via a communication interface such as I2C20 (Inter-Integrated Circuit). A similar effect can be obtained by connecting the detection terminal 23T of the contact terminal 23 to the GPIO 12 without going through the AD converter CV.

The RAM 13 is, for example, a work memory used in the operation of the MCU 19. The ROM 14 stores, for example, a program and data for controlling the execution of the operation (processing) of the MCU 19 in advance.

The storage unit 15 is composed of a storage medium such as a memory card, and the captured image captured by the image pickup unit 11 based on, for example, an instruction to start recording based on the operation of a police officer or an instruction to start recording from the in-vehicle camera system 50. Start recording data (that is, recording). The storage unit 15 constantly prebuffers and holds the data of the captured image of the captured image for a predetermined time (for example, 30 seconds) captured by the imaging unit 11, and holds the captured image of the captured image up to a predetermined time (for example, 30 seconds) before the current time. Always keep accumulating data. Upon receiving the instruction to start recording, the storage unit 15 starts recording the data of the captured image and continues recording the data of the captured image until the instruction to stop recording is received. When the storage unit 15 is composed of a memory card, it is freely inserted and removed from the housing of the wearable camera 10.

The EEPROM 16 stores, for example, identification information for identifying the wearable camera 10 (for example, a serial number as a camera ID) and various setting information. The RTC 17 counts the current time information and outputs it to the MCU 19.

The GNSS receiving unit 18 receives satellite signals including their own signal transmission times and position coordinates transmitted from a plurality of (for example, four) navigation satellites and outputs them to the MCU 19. The MCU 19 uses a plurality of satellite signals to calculate the current position coordinates of the wearable camera 10 and the reception time of the satellite signals. Note that this calculation may be performed by the GNSS receiving unit 18 instead of the MCU 19. This reception time information may also be used to correct the system time of the wearable camera 10 (that is, the output of the RTC 17). The system time is used for recording the imaging time of captured images (including still images and moving images).

The MCU 19 has a function as a control unit of the wearable camera 10, for example, a control process for controlling the operation of each part of the wearable camera 10 as a whole, a data input / output process with each part of the wearable camera 10. Performs data calculation processing and data storage processing. The MCU 19 operates according to various programs and data stored in the ROM 14. The MCU 19 uses the RAM 13 during operation to obtain the current time information from the RTC 17, and obtains the current position information from the GNSS receiving unit 18 or calculates the current position information using the output from the GNSS receiving unit 18. To do.

In the wearable camera 10, the power consumption during execution of LTE communication using a wide area communication network (for example, network NW1) is larger than the power consumption during execution of wireless LAN communication such as BLE communication or Wifi (registered trademark). Become. On the other hand, since the wearable camera 10 is always worn and used by police officers during patrols and the like, the power consumption of the battery 25 (see FIG. 2) increases when the LTE communication time becomes too long. In the worst case, the battery 25 runs out during mounting, and the wearable camera 10 cannot take an image of the subject. In order to avoid such a situation, in the wearable camera 10, the MCU 19 as an example of the control unit is normally set to enable each of BLE communication and wireless LAN communication, but the use of LTE communication is not permitted. It is set to do. Then, the MCU 19 is set to allow the use of LTE communication only at a predetermined timing or a predetermined period. For details of the predetermined timing and the predetermined period, the first operation example (see FIG. 6), the second operation example (see FIG. 7), the third operation example (see FIG. 8), and the fourth operation example (see FIG. 10) will be described with reference to each of them.

The BLE communication unit 21A as an example of the short-range communication unit wirelessly communicates with a smartphone, a common trigger box 54, or the like using BLE (Bluetooth Low Energy) communication, which is a communication standard for short-range wireless communication. Communicate. BLE is the name for version 4.0 of Bluetooth®. In BLE, communication is possible with low power consumption, but the communication speed is as low as about 100 kbps.

The WLAN communication unit 21B as an example of the short-range communication unit is connected by a wireless LAN (that is, WLAN) to a smartphone as a wireless LAN access point using the tethering function, a wireless LAN access point provided in the police station, or the like. , Perform wireless communication with the connection destination. Compared to BLE, wireless LAN is capable of high-speed communication with a communication speed of several tens to several hundreds of Mbps, but since it is always connected to a wireless LAN access point, it consumes a large amount of power.

The wearable camera 10 may have short-range wireless communication such as NFC (Near Field Communication) in addition to BLE communication or WLAN communication.

The LTE communication unit 21C as an example of the wide area communication unit performs wide area wireless communication (for example, LTE communication) using a wide area communication network (for example, network NW1) such as a mobile line network. In the wearable camera 10, the LTE communication unit 21C can perform LTE communication only when permission for use is set by the MCU 19.

The USB interface 22 is a serial bus, and enables connection with, for example, an in-vehicle PC 52 or a client PC 90 in a police station.

The contact terminal 23 is a terminal for electrically connecting to the charging stand 55, is connected to the MCU 19 via the USB interface 22, and is connected to the power supply unit 24. The power supply unit 24 charges the battery 25 in response to the detection of the connection with the charging stand 55 at the contact terminal 23. The contact terminal 23 can communicate the video data read from the storage unit 15 by the MCU 19 to an external device (for example, the common trigger box 54) connected via the charging stand 55 according to the connection with the charging stand 55. is there.

The contact terminal 23 is provided with, for example, a “charging terminal V +” (not shown), a “detection terminal 23T”, a “data terminal D−, D +” (not shown), and a “ground terminal” (not shown). The detection terminal 23T is a terminal for detecting a voltage and a voltage change. The data terminals D− and D + are terminals for transferring video data captured by the wearable camera 10 to the in-vehicle PC 52 via, for example, a USB connector terminal. The detection terminal 23T of the contact terminal 23 is connected to a communication interface such as I2C20 via the AD converter CV, and the detection voltage value of the contact terminal 23 is input to the MCU 19.

By connecting the contact terminal 23 and the connector of the charging stand 55, data communication becomes possible between the wearable camera 10 and an external device (for example, the common trigger box 54).

The power supply unit 24 is supplied from an external power source (for example, a common trigger box 54, a cigar charger in the police vehicle VC1 (not shown), an accessory in the police vehicle VC1) connected to the charging stand 55 via, for example, the contact terminal 23. The battery 25 is charged by supplying the charging current to the battery 25.

The battery 25 is composed of, for example, a rechargeable secondary battery, and supplies power to each part of the wearable camera 10.

The recording switch SW1 is a push button switch for inputting an operation instruction for starting / stopping recording (capturing a moving image) by, for example, pressing a police officer. Further, the MCU 19 may start recording (capturing a moving image) when the recording switch SW1 is pressed for a short time, and end recording when the recording switch SW1 is pressed for a long time. Further, the MCU 19 may start recording (capturing a moving image) when the recording switch SW1 is pressed an odd number of times, and end recording when the recording switch SW1 is pressed an even number of times.

The snapshot switch SW2 is a push button switch for inputting an operation instruction for capturing a still image by, for example, a police officer's pressing operation. Whenever the snapshot switch SW2 is pressed, for example, the MCU 19 executes an image of a still image when the snapshot switch SW2 is pressed.

The communication mode switch SW3 is, for example, a slide switch for inputting an operation instruction for setting a communication mode between the wearable camera 10 and an external device. The communication mode includes, for example, an access point mode, a station mode, and an OFF mode.

The access point mode is a mode in which the wearable camera 10 operates as an access point for a wireless LAN, for example, wirelessly connects to a smartphone owned by a police officer, and communicates between the wearable camera 10 and the smartphone. In the access point mode, the smartphone can display the current live image by the wearable camera 10, reproduce the recorded image, display the captured still image, and the like by connecting to the wearable camera 10.

The station mode is a mode in which an external device is used as an access point for communication when connecting to an external device using a wireless LAN. For example, the tethering function of the smartphone may be used to set the smartphone as an external device. In the station mode, the wearable camera 10 can perform various settings, transfer (upload) of the recorded image held by the wearable camera 10, and the like to the in-vehicle camera system 50.

The OFF mode is a mode in which the communication operation of the wireless LAN is turned off and the wireless LAN is not used.

Further, the communication mode switch SW3 (an example of the input unit) may accept an input operation indicating the occurrence of an emergency event (for example, a long press operation of the communication mode switch SW3) by the operation of a police officer. An emergency event is a highly urgent event that occurs in the work of a police officer, for example, that an incident has occurred, that there was sighting information of the suspect being tracked, or that the suspect is near the police officer. It corresponds to what is done. The input operation indicating the occurrence of an emergency event is not limited to the long press operation of the communication mode switch SW3, and other switches (for example, recording switch SW1, snapshot switch SW2, attribute information imparting switch SW4, wireless registration switch SW5). It may be the operation of.

The attribute information addition switch SW4 is a push button switch operated to add attribute information to video data. The attribute information indicates the content of the image captured by the wearable camera 10 (for example, the type of incident, murder, robbery, disaster, etc.).

The wireless registration switch SW5 registers and sets an external device (for example, a smartphone, common trigger box 54) of the other party with which the wearable camera 10 wirelessly communicates (for example, wireless communication using BLE or wireless LAN) as a communication partner (hereinafter, "" It is a push button switch that is operated when (sometimes referred to as "communication setting processing"). Hereinafter, in wireless communication using, for example, BLE, the process of registering and setting a device to be a communication partner may be referred to as "pairing".

The LED 26a is, for example, a display unit indicating a power-on state (on / off state) of the wearable camera 10 and a state of the battery 25.

The LED 26b is, for example, a display unit that indicates a state (recording state) of the imaging operation of the wearable camera 10.

The LED 26c is, for example, a display unit indicating the state of the communication mode of the wearable camera 10. Further, when the wearable camera 10 receives the notification data from the vehicle-mounted camera system 50 (for example, the vehicle-mounted PC 52), the three LEDs 26a to 26c blink according to the instruction from the MCU 19. At this time, the MCU 19 changes the blinking pattern of the LEDs 26a to 26c according to the information about the sound source included in the notification data.

The MCU 19 detects the input of each switch of the recording switch SW1, the snapshot switch SW2, the communication mode switch SW3, the attribute information imparting switch SW4, and the wireless registration switch SW5, and processes the switch input that has been operated.

When the MCU 19 detects the operation input of the recording switch SW1, it controls the start or stop of the imaging operation in the imaging unit 11, and stores the image obtained from the imaging unit 11 in the storage unit 15 as a moving image.

When the MCU 19 detects the operation input of the snapshot switch SW2, the MCU 19 stores the image taken by the imaging unit 11 when the snapshot switch SW2 is operated in the storage unit 15 as a still image.

The MCU 19 detects the state of the communication mode switch SW3 and operates the communication unit 21 according to the communication mode according to the setting of the communication mode switch SW3.

When the attribute information imparting switch SW4 is pressed, the MCU 19 assigns attribute information corresponding to the data of the image captured by the imaging unit 11 in association with the image.

When the wireless registration switch SW5 is pressed, the MCU 19 is a default process to be performed in the communication setting process (for example, pairing) for a peripheral external device (for example, the common trigger box 54) that can be a communication partner of the wearable camera 10. To execute. Here, for example, in the default process, for example, the generation of registration request information as a communication partner of wireless communication, the output to the BLE communication unit 21A, and the generation of connection information for specifying the communication partner to be connected to. In addition, the output to the BLE communication unit 21A and the storage of the connection information transmitted from the communication partner in the storage unit 15. However, it goes without saying that the default process related to the wireless LAN communication setting is the same as the default process when the above-mentioned pairing is illustrated.

FIG. 3 is a block diagram showing a hardware configuration example of each of the in-vehicle PC 52 and the client PC 90. The in-vehicle PC 52 and the client PC 90 are configured by using, for example, a PC (Personal Computer), and each has the same hardware configuration. Each of the in-vehicle PC 52 and the client PC 90 includes a CPU 201, an I / O (Input / Output) control unit 202, a communication unit 203, a memory 204, an input unit 205, a display unit 206, a speaker 207, and an HDD 208. It is a configuration including. The in-vehicle PC 52 can communicate with each of the wearable camera 10 and the in-vehicle recorder 53, and is a headquarters server in the police station (for example, a dispatch server 60, a metainfo server 80, a content server 70) via a common trigger box 54. Can also communicate with. On the other hand, the client PC 90 can communicate with the data center console CC1, the dispatch server 60, the metainfo server 80, and the content server 70.

The CPU 201 is, for example, a control process for overall controlling the operation of each part of the in-vehicle PC 52 and the client PC 90, an input / output process of data with each other part via the I / O control unit 202, and data. Performs arithmetic (calculation) processing and data storage processing.

The CPU 201 is, for example, a police officer's in-vehicle camera system 50 or a police station system (not shown) by an input operation of a police officer on a login screen to the in-vehicle camera system 50 or the police station system (not shown) displayed on the display unit 206. ) Is authenticated. The policeman's input operation is, for example, an operation of inputting an Officer ID and a password. Various information about the police officer who is allowed to log in is stored in advance in the memory 204, for example, and the CPU 201 uses the information of the police officer who is allowed to log in in advance in the memory 204 to use the information of the police officer's in-vehicle camera system. It is determined whether or not to log in to 50 or the system in the police station (not shown). The login may be a login to the in-vehicle camera system 50 via the in-vehicle PC 52 or a system in the police station (not shown) via the client PC 90, or to a default application installed in the in-vehicle PC 52 or the client PC 90. You may log in.

The I / O control unit 202 controls data input / output between the CPU 201 and each unit of the vehicle-mounted PC 52 or the client PC 90 (for example, the communication unit 203, the input unit 205, the display unit 206, and the speaker 207), and the I / O control unit 202 controls the data input / output from the CPU 201. The data and the data are relayed to the CPU 201. The I / O control unit 202 may be integrally configured with the CPU 201.

The communication unit 203 performs wired or wireless communication with, for example, the vehicle-mounted camera 51 or the vehicle-mounted recorder 53, or with the wearable camera 10 that can be worn by police officers. Further, the communication unit 203 performs wired or wireless communication with, for example, any one of the data center console CC1, the dispatch server 60, the metainfo server 80, and the content server 70. Further, the communication unit 203 may have a communication circuit (for example, a communication circuit mounted on a USIM (Universal Subscriber Identity Module) card) capable of executing wide area wireless communication (for example, LTE communication) using a wide area communication network. In this case, LTE communication may be executed with the headquarters server in the police station via the network NW1. In other words, each of the in-vehicle PC 52 and the client PC 90 can execute LTE communication using the wide area communication network. Further, the communication unit 203 communicates with the common trigger box 54 by wire or wirelessly.

The memory 204 is configured by using, for example, a RAM, a ROM, or a non-volatile or volatile semiconductor memory, functions as a work memory during the operation of the CPU 201, and stores a predetermined program and data for operating the CPU 201. .. The memory 204 stores, for example, login information regarding a police officer who is permitted to log in to the in-vehicle camera system 50 or a police station system (not shown).

The input unit 205 is a UI (User Interface) for receiving an input operation of a police officer and notifying the CPU 201 via the I / O control unit 202, and is a pointing device such as a mouse or a keyboard. The input unit 205 may be arranged using, for example, a touch panel or a touch pad that is arranged corresponding to the screen of the display unit 206 and can be operated by a policeman's finger or a stylus pen. The input unit 205 inputs, for example, login information for logging in to the in-vehicle camera system 50.

The display unit 206 is configured by using, for example, an LCD or an organic EL, and displays various information. Further, the display unit 206 displays the data of the image portion included in the captured images captured by the wearable camera 10 and the in-vehicle camera 51 on the same screen under the instruction of the CPU 201, for example, in response to the input operation of the police officer. Display (see FIG. 9).

The speaker 207 outputs the data of the audio portion included in the captured image captured by each of the wearable camera 10 and the in-vehicle camera 51 under the instruction of the CPU 201, for example, in response to the input operation of the police officer. The display unit 206 and the speaker 207 may be configured separately from the in-vehicle PC 52 and the client PC 90.

The HDD 208 stores, for example, various data and software (software programs). Specifically, the HDD 208 stores, for example, software for controlling and setting the in-vehicle camera 51 and the in-vehicle recorder 53, and software for controlling and setting the wearable camera 10. Further, the HDD 208 may store, for example, the data of the captured image captured by the wearable camera 10 and the data of the captured image captured by the in-vehicle camera 51.

FIG. 4 is a block diagram showing a hardware configuration example of the common trigger box 54. The common trigger box 54 shown in FIG. 4 includes a processor 301, a memory 302, a communication unit 303, a LAN connector 304, a LAN interface unit 305, a USB connector 306, a USB interface unit 307, an LED 308, and a switch 309. It is a configuration including and. The common trigger box 54 is deployed, for example, in the trunk room of the police vehicle VC1.

The processor 301 is configured by using, for example, a CPU, MPU, DSP or FPGA (Field Programmable Gate Array), and has a function as a control unit of the common trigger box 54. The processor 301, for example, controls processing for overall control of the operation of each part of the common trigger box 54, data input / output processing with each part of the common trigger box 54, data calculation (calculation) processing, and data. Perform storage processing. The processor 301 operates according to various programs and data stored in the flash memory 3022.

The memory 302 includes a work memory 3021 and a flash memory 3022. The work memory 3021 is configured by using, for example, RAM, and is used when the processor 301 operates. The flash memory 3022 holds in advance a program and data for controlling the execution of the operation (process) of the processor 301, and various data or an external device (for example, a wearable camera 10) generated by the operation (process) of the processor 301. , Various data transmitted from the in-vehicle camera system 50) are stored.

The communication unit 303 includes a wired communication circuit unit (not shown) for performing wired communication (for example, LAN communication) and a wireless communication circuit unit (not shown) for performing wireless communication (for example, BLE communication, wireless LAN communication, LTE communication). Omitted) and. The communication unit 303 is wired between the common trigger box 54 and an external device (for example, an in-vehicle camera system 50, a rotation warning light (not shown), an acceleration sensor (not shown), a siren (not shown)). Send and receive data using. The common trigger box 54 may be connected to the in-vehicle PC 52 by wire or wirelessly. In this case, the communication unit 303 performs wired data transmission / reception with the in-vehicle PC 52. Further, the communication unit 303 performs data transmission / reception using wireless (for example, BLE communication or wireless LAN communication) between the common trigger box 54 and an external device (for example, a wearable camera 10) connected wirelessly. Further, the communication unit 303 transmits the captured image data captured by at least one of the wearable camera 10 and the in-vehicle camera 51 to the headquarters server of the police station via the network NW1 and the communication device RT1. LTE communication is performed in this transmission.

The LAN connector 304 is an external device (for example, an in-vehicle camera system 50, a rotation warning light (not shown), and an acceleration sensor (not shown) connected to the common trigger box 54 via a LAN cable (not shown, for example, a cross cable or a straight cable). This is the default connector used for LAN communication with (omitted) and siren (not shown). The acceleration sensor (not shown) may be provided in the common trigger box 54. The LAN interface unit 305 is a communication interface between the LAN connector 304 and the processor 301, and inputs / outputs data between the LAN connector 304 and the processor 301. The LAN interface unit 305 may have a GPIO to which the output of the signal terminal of the LAN cable (for example, a cross cable) is input.

The USB connector 306 is an external device (for example, an in-vehicle camera system 50, a rotation warning light (not shown), an acceleration sensor (not shown), and a siren (not shown) connected to the common trigger box 54 via a USB cable (not shown). )) Is the default connector used for USB communication with. The USB interface unit 307 is a communication interface between the USB connector 306 and the processor 301, and inputs / outputs data between the USB connector 306 and the processor 301.

The LED 308 is configured by using, for example, a plurality of LEDs. The LED 308 turns on or off to notify whether or not the power of the common trigger box 54 is turned on according to the control signal from the processor 301. The LED 308 turns on or off to notify whether or not BLE communication is being performed according to the control signal from the processor 301. The LED 308 turns on or off to notify whether or not wireless LAN communication is being performed according to the control signal from the processor 301. The LED 308 turns on or off to notify whether or not LTE communication is being performed according to the control signal from the processor 301.

The switch 309 is operated when the common trigger box 54 registers and sets an external device of a partner with which wireless communication (for example, BLE communication, wireless LAN communication, or LTE communication) is performed as a communication partner (that is, during communication setting processing). It is a push button switch. A signal indicating that the switch 309 is pressed is input to the processor 301.

FIG. 5 is a block diagram showing a hardware configuration example of the headquarters server. As described with reference to FIG. 1, the headquarters server is composed of, for example, a dispatch server 60, a metainfo server 80, and a content server 70. The dispatch server 60, the metainfo server 80, and the content server 70 are all configured by using a high-performance server-type computer, and each has the same hardware configuration. Each of the dispatch server 60, the metainfo server 80, and the content server 70 has a configuration including a CPU 401, an I / O control unit 402, a communication unit 403, a memory 404, an input unit 405, and an HDD 406. The headquarters server can communicate with the communication device RT1 and also with each of the data center console CC1 and the client PC 90.

The CPU 401, for example, performs control processing for overall control of the operations of each part of the dispatch server 60, the metainfo server 80, and the content server 70, and an I / O control unit 402 of data between the other parts. Performs input / output processing, data calculation (calculation) processing, and data storage processing via.

The I / O control unit 402 controls data input / output between the CPU 401 and each unit of the dispatch server 60, the metainfo server 80, and the content server 70 (for example, the communication unit 403 and the input unit 405), and the CPU 401. The data from the server and the data to the CPU 401 are relayed. The I / O control unit 402 may be integrally configured with the CPU 401.

The communication unit 403 performs wired or wireless communication with each of the communication device RT1, the data center console CC1 and the client PC 90, for example. The communication unit 403 receives the captured video data (including metadata described later) sent from the wearable camera 10 or the common trigger box 54 via the communication device RT1 and outputs the captured image data to the CPU 401.

The memory 404 is configured by using, for example, a RAM, a ROM, or a non-volatile or volatile semiconductor memory, functions as a work memory during the operation of the CPU 401, and stores a predetermined program and data for operating the CPU 401. .. In the memory 404, for example, in the dispatch server 60, the dispatch to the police site (for example, the place where the incident occurred), the scheduling data of the police patrol, the deployment plan data of the police, and the like are stored. Further, in the meta info server 80, for example, the memory 404 stores the metadata corresponding to the captured image data transmitted from the wearable camera 10 or the common trigger box 54. Further, in the content server 70, for example, the memory 404 stores captured video data transmitted from the wearable camera 10 or the common trigger box 54. The captured video data transmitted from the common trigger box 54 may be captured video data captured by the wearable camera 10, captured video data captured by the in-vehicle camera 51, or captured video captured by both. It may be data.

The input unit 405 is a UI (User Interface) for receiving an input operation of a police officer using, for example, a client PC 90 and notifying the CPU 401 via the I / O control unit 402, and is a pointing device such as a mouse or a keyboard. is there. The input unit 405 inputs, for example, login information for logging in to a police station system (not shown).

The HDD 408 stores, for example, various data and software (software programs). Specifically, the HDD 408 stores, for example, software for controlling and setting the dispatch server 60, the metainfo server 80, and the content server 70, respectively. Further, the HDD 408 may store, for example, the data of the captured image captured by the wearable camera 10 or the in-vehicle camera 51.

Next, the first operation example to the fourth operation example of the wearable camera system 1 according to the first embodiment will be described with reference to FIGS. 6 to 10.

(First operation example)
FIG. 6 is a sequence diagram showing a first operation example related to distribution of captured video data of the wearable camera system 1 according to the first embodiment in chronological order. In the first operation example, when the wearable camera 10 receives an input operation indicating the occurrence of an emergency event, it permits the use of LTE communication, and then distributes the captured video data to the headquarters server in the police station by LTE communication. To do. Although only one wearable camera 10 is shown in FIG. 6 for the sake of simplicity, a plurality of wearable cameras 10 may be used. Further, in the description of FIGS. 6, 7, 8 and 10, the headquarters server receives various data transmitted from the wearable camera 10 by LTE communication via the communication device RT1.

In FIG. 6, the wearable camera 10 pre-records (that is, buffers captured video data for a certain period of time (for example, 3 minutes)) as a normal operation, and LTE is used to suppress an increase in power consumption. The use of communication is set to be disallowed. In other words, in the wearable camera 10, LTE communication is in a standby state (that is, a standby state) or an OFF state (in other words, an unusable state).

Here, the wearable camera 10 receives an emergency button ON input (for example, the length of the communication mode switch SW3) by the operation of a police officer who receives a notification of the occurrence of an incident by a police radio (not shown) mounted on the smartphone 40 or the police vehicle VC1. Press operation) is detected (St1). In response to the detection in step St1, the wearable camera 10 stops the above-mentioned pre-recording and starts recording (recording) the captured image data of the subject captured by the imaging unit 11 in the storage unit 15 (St2). .. The wearable camera 10 is set to turn on LTE communication (that is, allow the use of LTE communication) in parallel with step St2 (St3). As a result, the wearable camera 10 can temporarily execute LTE communication with the headquarters server in the police station.

After step St3, the wearable camera 10 generates a distribution start trigger notification of the captured video data by LTE communication (that is, a notification for notifying that the distribution of the captured video data is started by LTE communication), and the distribution start trigger notification. Is transmitted to the headquarters server (for example, one of the dispatch server 60, the metainfo server 80, and the content server 70; the same shall apply hereinafter in the description of FIG. 6) by LTE communication (St4).

The headquarters server generates a distribution start trigger response to the effect that the distribution start trigger notification has been received, and transmits the distribution start trigger response to the wearable camera 10 by LTE communication (St5). Subsequently, the headquarters server transmits the server information (for example, information about the destination of the content server 70) of the distribution destination of the captured video data of the wearable camera 10 to the wearable camera 10 by LTE communication (St6).

The wearable camera 10 generates a notification to start distributing the captured video data by LTE communication to the distribution destination server (for example, the content server 70) sent from the headquarters server, and sends the notification to the headquarters server by LTE communication. Send to (St7). As a result, the wearable camera 10 temporarily permits the use of LTE communication based on the operation of the police, for example, when the police are in a highly urgent situation during patrol, and suppresses an increase in power consumption. However, captured video data (including video and audio) of important scenes that seem to be tense can be adaptively transmitted to the headquarters server in the police station (St8). The headquarters server receives the captured video data transmitted from the wearable camera 10 by LTE communication and records it on the content server 70 or the like (St9). Although not shown in FIG. 6, the wearable camera 10 may switch the setting to disallow the use of LTE communication as in the normal case when the captured video data has been transmitted by LTE communication. As a result, the wearable camera 10 can effectively suppress an increase in power consumption due to LTE communication by shortening the license period for LTE communication so as not to be unnecessarily extended even when it is not necessary to perform LTE communication, for example. ..

As described above, in the first operation example of the wearable camera system 1 according to the first embodiment, when the wearable camera 10 captures an image of a subject in front of a police officer and receives an input operation indicating the occurrence of an emergency event, the input operation is performed. Depending on the situation, the use of wide area wireless communication (for example, LTE communication) using a wide area communication network is permitted with the headquarters server managed by the police station. After setting the wearable camera 10 to allow the use of LTE communication, the wearable camera 10 transmits the captured image data of the subject to the headquarters server in the police station by wide area wireless communication.

That is, the wearable camera 10 does not always perform LTE communication, but temporarily permits the use of LTE communication by the operation of a police officer when an urgent event (for example, an incident) occurs. As a result, the wearable camera 10 can suppress an increase in the power consumption of the battery 25 built in the wearable camera 10, but it is important that the wearable camera 10 takes an image in response to an event (for example, an incident) related to the work of a police officer. The captured video data of the scene can be delivered to the police station in an adaptive and timely manner.

Further, the wide area wireless communication is LTE communication. As a result, the wearable camera 10 can execute 4G communication (in other words, LTE communication) having a higher transmission rate than, for example, 3G (3rd generation mobile communication method), so that high-quality captured video data can be sent to the headquarters server at high speed. Can be transmitted.

Further, the wearable camera 10 disallows the use of wide area wireless communication after transmitting the captured video data. As a result, the wearable camera 10 can effectively suppress an increase in power consumption due to LTE communication by shortening the license period for LTE communication so as not to be unnecessarily extended even when it is not necessary to perform LTE communication, for example. ..

(Second operation example)
FIG. 7 is a sequence diagram showing a second operation example relating to the distribution of captured video data of the wearable camera system according to the first embodiment in chronological order. In the second operation example, the wearable camera 10 relays the smartphone 40 and communicates with the headquarters server in the police station before permitting the use of LTE communication, but based on the LTE communication usage instruction from the headquarters server. The use of LTE communication is permitted, and then the captured video data is distributed to the headquarters server by LTE communication. Although only one wearable camera 10 is shown in FIG. 7 for the sake of simplicity, a plurality of wearable cameras 10 may be used.

In FIG. 7, the headquarters server (for example, the dispatch server 60; the same shall apply hereinafter in the description of FIG. 7) is, for example, a police officer in the police station (for example, an on-site analyst) who has seen the police officer deployment screen displayed on the data center console CC1. By operating the client PC 90 of the above, an LTE communication ON notification for permitting the use of the LTE communication of the wearable camera 10 of a police officer (for example, a police officer on patrol) located around the site is generated. The headquarters server transmits an LTE communication ON notification (an example of an instruction to use wide area wireless communication) to the smartphone 40 by LTE communication (St11). The smartphone 40 transfers the LTE communication ON notification sent from the headquarters server to the wearable camera 10 by BLE communication (St12).

When the wearable camera 10 receives and acquires the LTE communication ON notification transferred from the smartphone 40, the wearable camera 10 is set to turn on the LTE communication (that is, allow the use of the LTE communication) based on the LTE communication ON notification. (St13). As a result, the wearable camera 10 can temporarily directly execute LTE communication with the headquarters server in the police station without going through the smartphone 40. Even if the wearable camera 10 permits the use of LTE communication, it can perform short-range wireless communication (for example, BLE communication or wireless LAN communication) with the smartphone 40.

The wearable camera 10 generates an LTE communication ON response indicating that the use of LTE communication is permitted by the setting in step St13, and sends the LTE communication ON response to the smartphone 40 by BLE communication (St14). The smartphone 40 transfers the LTE communication ON response sent from the wearable camera 10 to the headquarters server by LTE communication (St15).

After receiving the LTE communication ON response, the headquarters server directly sends a BWC data distribution request (that is, a request for distribution of captured video data to the wearable camera 10) to the wearable camera 10 corresponding to the LTE communication ON response by LTE communication. Is transmitted to the wearable camera 10 (St16). When the wearable camera 10 receives the BWC data distribution request sent from the headquarters server, the wearable camera 10 sends a BWC data distribution response to distribute the captured video data including video and audio to the headquarters server by LTE communication (St17). After step St17, the wearable camera 10 distributes BWC data (that is, captured image data including the image captured by the wearable camera 10 and the sound picked up) to the headquarters server by LTE communication (St18). The headquarters server receives the captured video data transmitted from the wearable camera 10 by LTE communication and records it on the content server 70 or the like (St19). Although not shown in FIG. 7, the wearable camera 10 may switch the setting to disallow the use of LTE communication as in the normal case when the captured video data has been transmitted by LTE communication. As a result, the wearable camera 10 can effectively suppress an increase in power consumption due to LTE communication by shortening the license period for LTE communication so as not to be unnecessarily extended even when it is not necessary to perform LTE communication, for example. ..

As described above, in the second operation example of the wearable camera system 1 according to the first embodiment, the wearable camera 10 images the subject in front of the police officer and communicates with the smartphone 40 possessed by the police officer in a short-range wireless communication. In response to the LTE communication ON notification sent from the headquarters server via the smartphone 40, the use of wide area wireless communication (for example, LTE communication) using the wide area communication network with the headquarters server is permitted. The wearable camera 10 is set to allow the use of LTE communication, and then transmits the captured image data of the subject to the headquarters server by LTE communication.

That is, the wearable camera 10 does not always perform LTE communication, but receives a command from the headquarters server in the police station (for example, a command sent to a police officer when an urgent event such as an incident occurs). In an emergency, the use of LTE communication is temporarily permitted without inputting police operations. Further, until the use of LTE communication is permitted, the smartphone 40 relays between the wearable camera 10 and the headquarters server, and the communication between the smartphone 40 and the wearable camera 10 is performed by BLE communication with low power consumption. .. As a result, the wearable camera 10 can suppress an increase in the power consumption of the battery 25 built in the wearable camera 10, but the wearable camera 10 takes an image in an emergency situation such as dispatching to the scene of the incident. Capturing video data of important scenes can be delivered to police stations in an adaptive and timely manner.

Further, the short-range wireless communication is BLE communication. As a result, before the wearable camera 10 permits the use of LTE communication, BLE communication with a small amount of power consumption is performed with the smartphone 40, so that an increase in the power consumption of the wearable camera 10 can be effectively suppressed. ..

Further, the wearable camera 10 disallows the use of wide area wireless communication after transmitting the captured video data. As a result, the wearable camera 10 can effectively suppress an increase in power consumption due to LTE communication by shortening the license period for LTE communication so as not to be unnecessarily extended even when it is not necessary to perform LTE communication, for example. ..

(Third operation example)
FIG. 8 is a sequence diagram showing a third operation example related to distribution of captured video data of the wearable camera system 1 according to the first embodiment in chronological order. FIG. 9 is a diagram showing an example of a playback display screen on the client PC 90. In the third operation example, each of the plurality of wearable cameras 10 permits the use of LTE communication based on the LTE communication usage instruction from the headquarters server as in the second operation example, and then the captured video data is subjected to LTE communication. Delivered to the headquarters server. Further, the client PC 90 connected to the headquarters server reproduces and displays the captured video data sent by LTE communication from each of the plurality of wearable cameras 10. The reproduction display screen of FIG. 9 is not limited to being reproduced and displayed on the client PC 90, and may be reproduced and displayed on another computer device (for example, an in-vehicle PC 52).

In FIG. 8, the headquarters server (for example, the dispatch server 60; the same shall apply hereinafter in the description of FIG. 8) is, for example, a police officer (for example, an on-site analyst) in the police station who saw the police officer deployment screen displayed on the data center console CC1. By operating the client PC 90 of the above, an LTE communication ON notification for permitting the use of each LTE communication of the wearable camera 10 of a plurality of police officers (for example, police officers on patrol) located around the site is generated. The headquarters server transmits an LTE communication ON notification (an example of an instruction to use wide area wireless communication) to the in-vehicle PC 52 by LTE communication (St21). The in-vehicle PC 52 transfers the LTE communication ON notification sent from the headquarters server to the common trigger box 54 by, for example, wire communication (St22).

The common trigger box 54 transmits the LTE communication ON notification transferred from the vehicle-mounted PC 52 to each of the wearable cameras 10 of a plurality of police officers by BLE communication or wireless LAN communication (St23-1 to St23-n). In the description of FIG. 8, the number of wearable cameras 10 is n (an integer of 2 or more). When each wearable camera 10 receives and acquires the LTE communication ON notification transferred from the common trigger box 54, it turns on the LTE communication (that is, permits the use of the LTE communication) based on the LTE communication ON notification. (St24-1 to St24-n). As a result, each wearable camera 10 can temporarily and directly execute LTE communication with the headquarters server in the police station without going through the common trigger box 54 and the in-vehicle PC 52. Even if each wearable camera 10 permits the use of LTE communication, it can perform short-range wireless communication (for example, BLE communication or wireless LAN communication) with the common trigger box 54.

Each wearable camera 10 generates an LTE communication ON response indicating that the use of LTE communication is permitted by the setting of steps St24-1 to St24-n, and sends the LTE communication ON response to the vehicle-mounted PC 52 by BLE communication (St25). -1 to St25-n). Each wearable camera 10 may send an LTE communication ON response to the vehicle-mounted PC 52 via the common trigger box 54. The in-vehicle PC 52 transfers the LTE communication ON response sent from each wearable camera 10 to the headquarters server by LTE communication (St26-1 to St26-n).

After receiving the LTE communication ON response from each wearable camera 10, the headquarters server requests the wearable camera 10 corresponding to the LTE communication ON response to distribute the BWC data (that is, distributes the captured video data to the wearable camera 10). The request) is directly transmitted to each wearable camera 10 by LTE communication (St27-1 to St27-n). When each wearable camera 10 receives the BWC data distribution request sent from the headquarters server, each wearable camera 10 sends a BWC data distribution response to distribute the captured video data including video and audio to the headquarters server by LTE communication (St28-1). ~ St28-n). Each wearable camera 10 obtains BWC data (that is, captured image data including the image captured by the wearable camera 10 and the sound picked up) after the corresponding processing in steps St28-1 to St28-n. It is delivered to the headquarters server by LTE communication (St29-1 to St29-n). The headquarters server may receive captured video data transmitted by LTE communication from each wearable camera 10 and record it on the content server 70 or the like, and further reproduce and display it on the data center console CC1 or the client PC 90 (St30). ). Although not shown in FIG. 8, each wearable camera 10 may switch the setting to disallow the use of LTE communication as in a normal state when the captured video data has been transmitted by LTE communication. .. As a result, each wearable camera 10 effectively increases the power consumption due to LTE communication by shortening the license period for LTE communication so as not to be unnecessarily extended until, for example, when it is not necessary to perform LTE communication. Can be suppressed.

As shown in FIG. 9, for example, the client PC 90 has captured video data MV1, MV2, MV3, MV4, MV5, MV6, MV7, MV8, MV9 captured by each wearable camera 10 (for example, nine wearable cameras 10). Is displayed on the same screen and played. As a result, the police officer who operates the data center console CC1 or the client PC90 can comprehensively view and confirm the surrounding situation of the police officer who wears each wearable camera 10, so that the situation at each site can be easily confirmed. Efficiency can be improved accurately. For example, according to the captured video data MV2 and MV4, a part of the wrist of each policeman holding a pistol is projected, and the tense situation at the scene can be seen in detail. Further, according to the captured video data MV3, it is possible to easily determine how a police officer is listening to, for example, a person who has violated parking at another point. Further, according to the captured video data MV6, it is possible to easily determine how the suspect is standing in the house and the police officer invades the house at another point. Further, according to the captured video data MV7, it is possible to easily determine how two people are fighting at another point.

When the client PC 90 displays the respective captured image data MV1 to MV9 on the display unit 206, the client PC 90 provides detailed information on the imaging date and time and the imaging point (position information) of the respective captured image data MV1 to MV9. DTL4, DTL5, DTL6, DTL7, DTL8, DTL9 may be additionally displayed. As a result, the police officer who is the viewer can accurately grasp the imaging date and time and the position information of the site related to the content of the captured image.

Further, the client PC 90 may display the management tree LGT1 when displaying the captured video data MV1 to MV9. The management tree LGT1 has icons ic1, ic2, ic3, ic4 ..., ic7, ic8, ... Corresponding to each displayed captured image data, and corresponds by operating the icon of the police officer who is the viewer. The captured image data may be enlarged or hidden, and the display frame of the corresponding captured image data may be noticeably displayed in a blinking manner or the like. As a result, the police officer who is a viewer can view the captured video data that he / she particularly wants to watch in a conspicuous manner, and can promote the efficiency of work.

As described above, in the third operation example of the wearable camera system 1 according to the first embodiment, each of the plurality of wearable cameras 10 images the subject in front of the corresponding police officer and relays the subject in front of the police vehicle VC1. Short-range wireless communication (for example, BLE communication or wireless LAN communication) is performed with a device (for example, an in-vehicle PC 52 or a common trigger box 54). The headquarters server can execute wide area wireless communication (for example, LTE communication) using a wide area communication network with the relay device, and gives an instruction to use LTE communication (for example, LTE communication ON notification) to each wearable camera 10. Send to the relay device. Each wearable camera 10 receives a wide area wireless communication use instruction via a relay device by short-range wireless communication, and permits the use of the wide area wireless communication in response to the wide area wireless communication use instruction. Each wearable camera 10 transmits the captured image data of the subject to the headquarters server by LTE communication.

That is, the wearable camera 10 does not always perform LTE communication, but receives a command from the headquarters server in the police station (for example, a command sent to a police officer when an urgent event such as an incident occurs). In an emergency, the use of LTE communication is temporarily permitted without inputting police operations. Further, until the use of LTE communication is permitted, each of the in-vehicle PC 52 and the common trigger box 54 relays between the wearable camera 10 and the headquarters server, and each of the in-vehicle PC 52 and the common trigger box 54 and the wearable camera 10 Communication between them is performed by BLE communication or wireless LAN communication with low power consumption. As a result, the wearable camera 10 can suppress an increase in the power consumption of the battery 25 built in the wearable camera 10, but the wearable camera 10 takes an image in an emergency situation such as dispatching to the scene of the incident. Capturing video data of important scenes can be delivered to police stations in an adaptive and timely manner.

Further, the short-range wireless communication is BLE communication or wireless LAN communication. As a result, before each wearable camera 10 permits the use of LTE communication, BLE communication or wireless LAN communication with low power consumption is performed between the in-vehicle PC 52 and the common trigger box 54. The increase in power consumption can be effectively suppressed.

Further, each wearable camera 10 disallows the use of wide area wireless communication after transmitting the captured video data. As a result, each wearable camera 10 effectively increases the power consumption due to LTE communication by shortening the license period for LTE communication so as not to be unnecessarily extended until, for example, when it is not necessary to perform LTE communication. Can be suppressed.

In addition, the headquarters server reproduces different captured image data transmitted from the wearable cameras 10 corresponding to each of the plurality of police officers and displays them on a display device (for example, data center console CC1 or client PC 90). As a result, the police officer who operates the data center console CC1 or the client PC90 can comprehensively view and confirm the surrounding situation of the police officer who wears each wearable camera 10, so that the situation at each site can be easily confirmed. Efficiency can be improved accurately.

(Fourth operation example)
FIG. 10 is a sequence diagram showing a fourth operation example related to distribution of captured video data of the wearable camera system 1 according to the first embodiment in chronological order. In the fourth operation example, the wearable camera 10 analyzes the captured image data to extract the metadata of a characteristic object (for example, a person or a vehicle), permits the use of LTE communication only for a predetermined period, and captures the metadata and the image. The video data is sent as a set to the online storage OST1. Further, the wearable camera 10 permits the use of LTE communication based on the LTE communication usage instruction from the headquarters server that has received the metadata and the captured video data, and then distributes the captured video data to the headquarters server by LTE communication. To do.

In FIG. 10, the wearable camera 10 (for example, MCU19 as an example of the analysis unit) analyzes the captured image data of the subject to extract the metadata of the characteristic object reflected in the captured image data. Here, the characteristic objects are the person involved in the crime such as an incident (in other words, the suspect), the face of the suspect, the appearance characteristics of the suspect's appearance, and the escape vehicle used by the suspect for escape. Includes at least one of the shapes and license plates of. As a method of extracting metadata, for example, it can be realized by using a trained model such as an AI (Artificial Intelligence) engine already generated in the wearable camera 10 through processing such as machine learning. The wearable camera 10 stores (records) the extraction result of the metadata of the characteristic object in the storage unit 15 (St31).

The wearable camera 10 temporarily uses LTE communication from the timing after the processing of step St31 (an example of a predetermined timing) to a predetermined period (for example, a period from receiving the accumulation completion response sent from the online storage OST1). Allow (St32). The wearable camera 10 sets the captured video data and the metadata as a set and transmits the captured video data to the online storage OST1 by LTE communication (St33). The online storage OST1 stores the captured video data and the metadata sent from the wearable camera 10 in association with each other, generates a storage completion response (for example, Ac) indicating that the storage is completed, and transmits the storage completion response (for example, Ac) to the wearable camera 10 ( St34). When the wearable camera 10 receives the storage completion response sent from the online storage OST1, the wearable camera 10 is set to disallow the use of LTE communication. The wearable camera 10 may repeatedly permit the use of temporary LTE communication during a predetermined period (see above) from the timing after the processing of step St31 (an example of a predetermined timing).

The online storage OST1 sets the accumulated image data and metadata as a set and sends it to the headquarters server in the police station by LTE communication (St35). The headquarters server (for example, the metainfo server 80) analyzes the metadata based on the captured image data and the metadata transmitted from the online storage OST1, and identifies the person (in other words, the suspect) involved in the crime such as an incident. (St36).

The headquarters server (for example, dispatch server 60; the same applies hereinafter in the description of FIG. 10 below) is the point where the suspect is found (for example, suspect) by the operation of the client PC90 of a police officer (for example, an analyst at the site) in the police station. Generates an LTE communication ON notification for permitting the use of LTE communication of the wearable camera 10 of a police officer (for example, a police officer on patrol) located around the wearable camera 10 (the position of the wearable camera 10 in which the captured image data of the person is obtained). The headquarters server transmits an LTE communication ON notification (an example of an instruction to use wide area wireless communication) to the smartphone 40 by LTE communication (St37). The smartphone 40 transfers the LTE communication ON notification sent from the headquarters server to the wearable camera 10 by BLE communication (St38).

When the wearable camera 10 receives and acquires the LTE communication ON notification transferred from the smartphone 40, the wearable camera 10 is set to turn on the LTE communication (that is, allow the use of the LTE communication) based on the LTE communication ON notification. .. As a result, the wearable camera 10 can temporarily directly execute LTE communication with the headquarters server in the police station without going through the smartphone 40. Even if the wearable camera 10 permits the use of LTE communication, it can perform short-range wireless communication (for example, BLE communication or wireless LAN communication) with the smartphone 40.

The wearable camera 10 generates an LTE communication ON response indicating that the use of LTE communication is permitted, and sends the LTE communication ON response to the smartphone 40 by BLE communication (St39). The smartphone 40 transfers the LTE communication ON response sent from the wearable camera 10 to the headquarters server by LTE communication (St40).

After receiving the LTE communication ON response, the headquarters server directly sends a BWC data distribution request (that is, a request for distribution of captured video data to the wearable camera 10) to the wearable camera 10 corresponding to the LTE communication ON response by LTE communication. Is transmitted to the wearable camera 10 (St41). When the wearable camera 10 receives the BWC data distribution request sent from the headquarters server, the wearable camera 10 sends a BWC data distribution response to distribute the captured video data including video and audio to the headquarters server by LTE communication (St42). After step St42, the wearable camera 10 distributes BWC data (that is, captured image data including the image captured by the wearable camera 10 and the sound picked up) to the headquarters server by LTE communication (St43). The headquarters server receives the captured video data transmitted from the wearable camera 10 by LTE communication and records it on the content server 70 or the like. The headquarters server may packetize voice data such as instructions from police officers such as analysts in the police station (for example, "go to the xxx point") and directly transmit it to the wearable camera 10 by LTE communication. (St44). As a result, a police officer wearing the wearable camera 10 can handle the wearable camera 10 like a police radio (for example, a transceiver), and can improve work efficiency. Although not shown in FIG. 10, the wearable camera 10 may switch the setting to disallow the use of LTE communication as in the normal case when the captured video data has been transmitted by LTE communication. As a result, the wearable camera 10 can effectively suppress an increase in power consumption due to LTE communication by shortening the license period for LTE communication so as not to be unnecessarily extended even when it is not necessary to perform LTE communication, for example. ..

As described above, in the fourth operation example of the wearable camera system 1 according to the first embodiment, the wearable camera 10 can execute wide area wireless communication using the wide area communication network with the online storage OST 1 or the headquarters server. .. The wearable camera 10 performs short-range wireless communication with the smartphone 40 possessed by the police officer, and extracts metadata of a characteristic object reflected in the captured image data of the subject in front of the police officer. The wearable camera 10 temporarily permits the use of wide area wireless communication (for example, LTE communication) at a predetermined timing, and transmits the captured image data of the subject and the corresponding metadata as a set to the online storage OST1. The headquarters server acquires the captured video data and the metadata from the online storage OST1, and transmits the LTE communication usage instruction to the wearable camera 10 via the smartphone 40 based on the metadata. The wearable camera 10 permits the use of wide area wireless communication in response to a wide area wireless communication usage instruction sent from the headquarters server via the smartphone 40, and transmits the captured image data of the subject to the headquarters server by LTE communication. ..

That is, the wearable camera 10 does not always perform LTE communication, but sends a command from the headquarters server in the police station (for example, when a suspect is identified by analyzing metadata, to a police officer located around the suspect. In an emergency such as when there is a command to be issued), the use of LTE communication is temporarily permitted without inputting the operation of the police officer. Further, until the use of LTE communication is permitted, the smartphone 40 relays between the wearable camera 10 and the headquarters server, and the communication between the smartphone 40 and the wearable camera 10 is performed by BLE communication with low power consumption. .. As a result, the wearable camera 10 can suppress an increase in the power consumption of the battery 25 built in the wearable camera 10, but for example, the police officer is placed in a position suitable for securing the suspect after the identification of the suspect in the case is completed. In an emergency situation such as dispatching, the captured image data of an important scene captured by the wearable camera 10 can be delivered to the police station in an adaptive and timely manner.

In addition, the characteristic object includes at least one of the face of the suspect regarding the case and the like, the appearance characteristics regarding the appearance of the suspect, the shape of the escape vehicle on which the suspect rides, and the license plate of the escape vehicle. As a result, the headquarters server can easily identify the suspect involved in the crime such as an incident concretely and at an early stage, and effectively promotes the video distribution from the wearable camera 10 together with the dispatch of police officers located around the suspect. be able to.

Further, the wearable camera 10 periodically permits the use of wide area wireless communication from a predetermined timing to a predetermined period. As a result, the wearable camera 10 can suppress an increase in the usable period of LTE communication and promptly send metadata that serves as a specific clue to the suspect to the headquarters server.

Further, the wearable camera 10 disallows the use of wide area wireless communication after transmitting the captured video data. As a result, the wearable camera 10 can effectively suppress an increase in power consumption due to LTE communication by shortening the license period for LTE communication so as not to be unnecessarily extended even when it is not necessary to perform LTE communication, for example. ..

Although various embodiments have been described above with reference to the drawings, it goes without saying that the present disclosure is not limited to such examples. It is clear that a person skilled in the art can come up with various modifications, modifications, substitutions, additions, deletions, and equality within the scope of the claims. It is understood that it naturally belongs to the technical scope of the present disclosure. Further, each component in the various embodiments described above may be arbitrarily combined as long as the gist of the invention is not deviated.

This disclosure suppresses the increase in power consumption of the built-in battery, and stably distributes the captured image data of the wearable camera to the police station in response to the occurrence of an event related to the work of the police officer. The wearable camera, the wearable camera system and the image. It is useful as a delivery method.

1 Wearable camera system 10 Wearable camera 50 In-vehicle camera system 51 In-vehicle camera 52 In-vehicle PC
53 In-vehicle recorder 54 Common trigger box 60 Dispatch server 70 Content server 80 Metainfo server 90 Client PC
CC1 Data Center Console NW1 Network OST1 Online Storage VC1 Police Vehicle

Claims (20)

A wearable camera worn by police officers
An imaging unit that captures the subject in front of the police officer,
The wide area communication department that performs wide area wireless communication using the wide area communication network with the police station server managed by the police station,
An input unit that accepts input operations that indicate the occurrence of an emergency event,
A control unit that permits the use of the wide area wireless communication in response to the input operation is provided.
The wide area communication unit transmits the captured image data of the subject to the police station server by the wide area wireless communication.
Wearable camera. The wide area wireless communication is LTE (Long Term Evolution) communication.
The wearable camera according to claim 1. The control unit disallows the use of the wide area wireless communication after transmitting the captured video data.
The wearable camera according to claim 1. A video distribution method performed by a wearable camera worn by a police officer.
The subject in front of the police officer was imaged and
Accepts input operations indicating the occurrence of an emergency event and accepts
In response to the input operation, the use of wide area wireless communication using the wide area communication network is permitted with the police station server managed by the police station.
The captured image data of the subject is transmitted to the police station server by the wide area wireless communication.
Video distribution method. A wearable camera worn by police officers
An imaging unit that captures the subject in front of the police officer,
The wide area communication department that performs wide area wireless communication using the wide area communication network with the police station server managed by the police station,
A short-range communication unit that performs short-range wireless communication with a mobile terminal possessed by the police officer,
A control unit that permits the use of the wide area wireless communication in response to an instruction to use the wide area wireless communication sent from the police station server via the mobile terminal is provided.
The wide area communication unit transmits the captured image data of the subject to the police station server.
Wearable camera. The short-range wireless communication is BLE (Bluetooth Low Energy) communication.
The wearable camera according to claim 5. The control unit disallows the use of the wide area wireless communication after transmitting the captured video data.
The wearable camera according to claim 5. A wearable camera system in which a wearable camera worn by a police officer and a police station server managed by a police station are connected in a communicable manner.
The wearable camera is
The subject in front of the police officer was imaged and
Perform short-range wireless communication with the mobile terminal possessed by the police officer.
The police station server
An instruction to use wide area wireless communication using a wide area communication network is sent to the mobile terminal with the police station server.
The wearable camera is
The instruction to use the wide area wireless communication is received by the short range wireless communication via the mobile terminal, and the instruction is received.
In response to the instruction to use the wide area wireless communication, the use of the wide area wireless communication is permitted, and the captured image data of the subject is transmitted to the police station server by the wide area wireless communication.
Wearable camera system. A video distribution method performed by a wearable camera worn by a police officer.
It is possible to execute wide area wireless communication using a wide area communication network with the police station server managed by the police station.
The subject in front of the police officer was imaged and
Perform short-range wireless communication with the mobile terminal possessed by the police officer.
The instruction to use the wide area wireless communication sent from the police station server is received by the short-range wireless communication via the mobile terminal.
In response to the instruction to use the wide area wireless communication, the use of the wide area wireless communication is permitted.
The captured image data of the subject is transmitted to the police station server by the wide area wireless communication.
Video distribution method. A wearable camera system in which different wearable cameras worn by each of a plurality of police officers and a police station server managed by the police station are connected in a communicable manner.
The wearable camera is
The subject in front of the police officer was imaged and
Performs short-range wireless communication with relay equipment placed in police vehicles,
The police station server
Wide-area wireless communication using a wide-area communication network can be executed with the relay device, and an instruction to use the wide-area wireless communication to the wearable camera is sent to the relay device.
The wearable camera is
The instruction to use the wide area wireless communication is received by the short range wireless communication via the relay device, and the instruction is received.
In response to the instruction to use the wide area wireless communication, the use of the wide area wireless communication is permitted, and the captured image data of the subject is transmitted to the police station server by the wide area wireless communication.
Wearable camera system. The short-range wireless communication is BLE (Bluetooth Low Energy) communication or wireless LAN communication.
The wearable camera system according to claim 10. The wearable camera disallows the use of the wide area wireless communication after transmitting the captured image data.
The wearable camera system according to claim 10. The police station server
The different captured image data transmitted from the wearable camera corresponding to each of the plurality of police officers is reproduced and displayed on the display device.
The wearable camera system according to claim 10. It is a video distribution method executed by a wearable camera system in which different wearable cameras worn by each of a plurality of police officers and a police station server managed by the police station are connected in a communicable manner.
The subject in front of the police officer was imaged and
Performs short-range wireless communication with relay equipment placed in police vehicles,
By wide-area wireless communication using the wide-area communication network between the police station server and the relay device, an instruction to use the wide-area wireless communication is sent to the relay device.
The instruction to use the wide area wireless communication is received by the short range wireless communication via the relay device, and the instruction is received.
In response to the instruction to use the wide area wireless communication, the use of the wide area wireless communication is permitted, and the captured image data of the subject is transmitted to the police station server by the wide area wireless communication.
Video distribution method. A wearable camera worn by police officers
An imaging unit that captures the subject in front of the police officer,
An analysis unit that extracts metadata of characteristic objects reflected in the captured image data of the subject, and an analysis unit.
A short-range communication unit that performs short-range wireless communication with a mobile terminal possessed by the police officer,
A wide area communication department that performs wide area wireless communication using a wide area communication network with an external storage device or a police station server managed by a police station,
A control unit that permits the use of the wide area wireless communication is provided.
The wide area communication unit transmits the captured image data of the subject and the corresponding metadata to the external storage device at a predetermined timing.
The control unit responds to an instruction to use the wide area wireless communication sent from the police station server, which has acquired the captured image data and the metadata from the external storage device, via the mobile terminal. Allow the use of wireless communication,
The wide area communication unit transmits the captured image data of the subject to the police station server by the wide area wireless communication.
Wearable camera. The characteristic object includes at least one of a suspect's face regarding an incident or the like, an appearance feature regarding the appearance of the suspect, the shape of the escape vehicle on which the suspect rides, and the license plate of the escape vehicle.
The wearable camera according to claim 15. The control unit periodically permits the use of the wide area wireless communication from the predetermined timing to the predetermined period.
The wearable camera according to claim 15. The control unit disallows the use of the wide area wireless communication after transmitting the captured video data.
The wearable camera according to claim 15. A wearable camera system in which a wearable camera worn by a police officer and a police station server managed by a police station are connected in a communicable manner.
The wearable camera is
It is possible to execute wide area wireless communication using a wide area communication network with an external storage device or a police station server managed by a police station.
Perform short-range wireless communication with the mobile terminal possessed by the police officer.
The metadata of the characteristic object reflected in the captured image data of the subject in front of the police officer is extracted.
At a predetermined timing, the use of the wide area wireless communication is permitted, and the captured image data of the subject and the corresponding metadata are transmitted to the external storage device.
The police station server
The captured image data and the metadata are acquired from the external storage device, and based on the metadata, an instruction to use the wide area wireless communication is transmitted to the wearable camera via the mobile terminal.
The wearable camera is
In response to the instruction to use the wide area wireless communication sent from the police station server via the mobile terminal, the use of the wide area wireless communication is permitted, and the captured image data of the subject is transmitted to the police by the wide area wireless communication. Send to the station server,
Wearable camera system. A video distribution method performed by a wearable camera worn by a police officer.
Perform short-range wireless communication with the mobile terminal possessed by the police officer.
The metadata of the characteristic object reflected in the captured image data of the subject in front of the police officer is extracted.
At a predetermined timing, the use of wide area wireless communication using a wide area communication network is permitted with an external storage device or a police station server managed by the police station, and the captured image data of the subject and the corresponding metadata Is transmitted to the external storage device by the wide area wireless communication.
In response to an instruction to use the wide area wireless communication sent from the police station server that acquired the captured video data and the metadata from the external storage device via the mobile terminal, the use of the wide area wireless communication is performed. Allow and
The captured image data of the subject is transmitted to the police station server by the wide area wireless communication.
Video distribution method.

Images