JPWO2020066627A1 - Communication equipment and communication systems - Google Patents

Abstract

Provided is a technology for efficiently grasping device information of a communication device in a communication device having a wireless communication function. The surveillance system 1 according to the present invention includes a surveillance camera 100 and a tablet terminal 200. The surveillance camera 100 has a wireless communication function by wireless LAN, includes device-specific identification information and information on a password generation rule in the SSID, and uses a password generated following the password generation rule to be used as a tablet terminal. Establish communication with 200.

Description

The present invention relates to communication devices and communication systems.

In an imaging system equipped with a surveillance camera, the surveillance camera is provided with a WiFi (registered trademark) function (hereinafter referred to as "wireless LAN function"), and it is possible to distribute surveillance images and make various settings by wireless communication. Further, various techniques have been proposed from the viewpoint of improving the convenience of the system (see, for example, Patent Document 1). In the technique disclosed in Patent Document 1, in a networked monitoring system, it is instructed to broadcast its own state to each device. In addition, when collecting the state of a device on a one-to-one basis, such as WiFi Direct (registered trademark) or Bluetooth (registered trademark), there is also a technology for acquiring the state of the device after performing the connection process to the device. Are known.

Japanese Unexamined Patent Publication No. 2011-249912

In the technique disclosed in Patent Document 1, since it is necessary to wait for the response from all the devices, it takes time to collect information, and another technique is required from the viewpoint of efficiency. In addition, in the technology of collecting information on a one-to-one basis, when checking the status of other terminals, it is necessary to disconnect the currently connected device and perform the connection process again, which is also from the viewpoint of efficiency. Another technology was required.

The present invention has been made in view of such a situation, and an object of the present invention is to solve the above problems.

The present invention is a communication device having a control unit and a communication unit and having a wireless communication function, and the control unit has a control number for identifying the communication device and a password generation rule. Generates the wireless communication identification information of the communication device including the password, generates a password from the wireless communication identification information based on the password generation rule, and sets the generated password as the login password of the communication device. , The communication unit transmits the broadcast information including the identification information on the wireless communication.
The control unit may include the state information of the communication device in the identification information on the wireless communication.
The control unit may include the setting information of the communication device in the identification information on the wireless communication.
The control unit generates identification information on the second wireless communication of the communication device including a second password generation rule different from the current password generation rule, and is based on the second password generation rule. Therefore, a second password is generated from the identification information on the second wireless communication, the login password of the communication device is changed to the second password, and the communication unit is used on the second wireless communication. Broadcast information including identification information may be transmitted.
The present invention is a communication system including the above-mentioned communication device and a terminal device capable of connecting to the communication device by wireless communication, and the terminal device relates to the above-mentioned generation rule of the password included in the identification information. The information is discriminated, a password is generated based on the discriminated generation rule, and the communication device is logged in with the password.
The present invention is a communication system including the above-mentioned communication device and a terminal device capable of connecting to the communication device by wireless communication, and the terminal device is a rule for generating the second password included in the identification information. Information is determined, a password is generated based on the determined second password generation rule, and the communication device is logged in with the password.

According to the present invention, in a communication device having a wireless communication function, it is possible to provide a technique for efficiently grasping device information of the communication device.

It is a figure which shows the schematic structure of the monitoring system which concerns on embodiment. It is a block diagram which shows the schematic structure of the surveillance camera which concerns on embodiment. It is a block diagram which shows the schematic structure of the tablet device which concerns on embodiment. It is a figure explaining the relationship between SSID and password which concerns on embodiment. It is a figure explaining the specific example which shows the apparatus state included in SSID which concerns on embodiment. It is a figure which shows the display example of the tablet terminal which concerns on embodiment. It is a flowchart of the process which a tablet terminal connects to a surveillance camera which concerns on embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a schematic configuration of the monitoring system 1 according to the present embodiment. The surveillance system 1 includes a plurality of surveillance cameras 100 (host devices) having a communication function, and a tablet terminal 200 (client device) capable of communicating with the surveillance cameras 100. Here, three surveillance cameras 100 are shown, but the purpose is not limited to this.

The surveillance camera 100 and the tablet terminal 200 are connected by a wireless LAN. The surveillance camera 100, which is the host device (device on the connected side) of the wireless LAN function, transmits SSID (Service Set IDentifier), which is identification information, and is a tablet terminal which is a client terminal (device on the connected side). 200 establishes communication using the password for the SSID.

In the present embodiment, the surveillance camera 100 makes the SSID and password variable according to a predetermined rule, and includes the state of the device in the SSID. The tablet terminal 200 grasps the state of the device without establishing communication from the SSID, and when establishing communication, it can determine the password based on the password generation rule included in the SSID and communicate with the determined password. And.

FIG. 2 is a functional block diagram showing a schematic configuration of the surveillance camera 100. The surveillance camera 100 includes a main control unit 101, a video acquisition unit 102, a camera 103, a video distribution unit 104, a wireless communication control unit 105, a data control unit 106, a RAM 107, a ROM 108, and a wireless communication module 109. And.

The main control unit 101 is, for example, a CPU (Central Processing Unit) and controls the entire inside of the surveillance camera 100 in an integrated manner. Further, the main control unit 101 manages the SSID and the password, and changes them at a predetermined timing. At the time of the change, the model-specific information (MAC address and serial number), the operating state and settings of the surveillance camera 100, and the password generation rule are added to the SSID again. The timing for changing the SSID and password is, for example, when the surveillance camera 100 is started, when the wireless LAN communication is terminated, when a certain period of time has elapsed (except for periodical and connected connections). Further, the setting contents of such timing may be set / changed from the tablet terminal 200.

The image acquisition unit 102 acquires an image from the camera 103 that captures a predetermined monitoring area. The video distribution unit 104 distributes the acquired data by wireless LAN communication (that is, wireless communication control unit 105, wireless communication module 109).

The wireless communication control unit 105 is, for example, a device that performs wireless LAN communication according to the WiFi standard, and communicates with an external device having a wireless communication function of the same standard, that is, a tablet terminal 200, using the wireless communication module 109. Further, the wireless communication control unit 105 transmits SSID including model-specific information, operating state and setting of the surveillance camera 100, and password generation rule information as notification information. Communication can be realized by combining other security functions and measures such as MAC address filtering and PSK authentication of WPA2PSK.

The data control unit 106 saves and reads data taken by the camera 103 and other data. It is equipped with a RAM 107 (volatile memory) and a ROM 108 (non-volatile memory, an external recording medium such as a memory card) that function as an area for storing / reading data.

FIG. 3 is a functional block diagram showing a schematic configuration of the tablet terminal 200. The tablet terminal 200 includes a main control unit 201, a display unit 202, a user operation control unit 204, a wireless communication control unit 205, a RAM 207, a ROM 208, and a wireless communication module 209.

The main control unit 201 comprehensively controls each component of the tablet terminal 200. The display unit 202 displays images distributed by the surveillance camera 100, which is a host-side device, and displays various applications. The user operation control unit 204 is an interface for acquiring an operation from the user, and is configured as, for example, various buttons (software) displayed on the display unit 202 or as physical buttons.

The wireless communication control unit 205 is, for example, a device that performs wireless LAN communication according to the WiFi standard, and communicates with an external device having a wireless communication function of the same standard, here, a surveillance camera 100, using a wireless communication module 209.

It is equipped with RAM 207 (volatile memory) and ROM 208 (nonvolatile memory, external recording medium such as HDD or memory card) that function as an area for storing / reading data.

Next, the form of each communication device will be described. Here, with reference to FIG. 4, a method of generating an SSID and a password, which are characteristic functions of the present embodiment, will be described.

The basic concept will be explained. As shown in FIG. 1, there are a plurality of surveillance cameras 100, which are host devices, and each of them has a "unique number / character string for identifying a device" such as a MAC address or a serial number (hereinafter, "management number"). ”). The main control unit 101 of the surveillance camera 100 has a means for generating an SSID and a password from the control number by a specific method, and based on the generated SSID and the password, can communicate using the wireless LAN technology.

The specific method refers to, for example, "performing an encryption process such as adding a number / character string from a control number or changing the order". The specific method is shared within the monitoring system 1, and the tablet terminal 200 can also generate the SSID and password by the same method. However, in the present embodiment, since it is not necessary to generate the SSID and the password by using the specific method on the tablet terminal 200 side, only the surveillance camera 100 will be described as being able to generate the SSID and the password by the specific method.

Conversion example 1 will be described. When the control number is "01234", as the conversion process A (SSID generation process), a character string [A-1] indicating the password generation method is added to the position before the control number, and the device is further placed after the control number. A character string [B] representing the state is added. The SSID character string generated at this stage is [A-1] 01234 [B].

Next, as the conversion process B (password generation process), the order of the SSIDs is reversed back and forth (front position → last position). The character string at this stage is [B] 43210 [A-1]. Further, the character strings [C-1] and [C-2] for password generation are added to the front and back positions of the character string. The generated passwords are [C-1] [B] 43210 [A-1] [C-2].

There are a plurality of types of generation rules at the time of password generation, which are shared with the tablet terminal 200. For example, any of the character strings [C-1] and [C-2] includes information on what kind of generation rule is used.

Conversion example 2 will be described. When the control number is [56789], as the conversion process A (SSID generation process), a character string [A-2] indicating the password generation method is added to the position before the control number, and the device is further placed after the control number. A character string [B] representing the state is added. The SSID character string generated at this stage is [A-2] 56789 [B].

Next, as the conversion process C (password generation process), the order of the SSIDs is rearranged according to the number of characters. The character string at this stage is, for example, 89567 [A-2] [B]. Further, the character strings [C-3] and [C-24] for password generation are added to the front and back positions of the character string. The generated password is [C-3] 89567 [A-2] [B] [C-4].

FIG. 5 is a diagram illustrating a specific example showing a device state included in the SSID. The above conversion example 1 will be described. The character string [B] in the SSID "[A-1] 01234 [B]" represents the device status information, and this information is represented as a number or a character string. For example, it is realized by assigning the state of the surveillance camera 100 (during abnormality occurrence, recording, positioning, etc.) to each bit of 1 octet (8 bits) and assigning it to the SSID.

Here, in order from the first bit, "recording", "positioning", "spare (unused)", "spare (unused)", "A abnormality (FAN abnormality)", "B abnormality (recording capacity shortage)", "C abnormality (power supply abnormality)" ) ”And“ D abnormality (positioning abnormality) ”are shown. The first half of 4 bits indicates ON / OFF of a certain function, and when it is "0", it indicates that it is "OFF", and when it is "1", it indicates that it is "ON". The latter 4 bits indicate the presence or absence of an abnormality in the device, and when it is "0", it indicates that there is no abnormality, and when it is "1", it indicates that there is an abnormality. In this example, the recording function is "ON" and the positioning function is "OFF", and there is an abnormality regarding "C abnormality (power supply abnormality)".

FIG. 6 shows an example of the screen A1 displayed on the tablet terminal 200 when the above two SSIDs can be searched.

As shown in FIG. 6, the tablet terminal 200 determines the device state from the respective SSIDs transmitted by the two surveillance cameras 100, and displays them in the corresponding areas A2 and A3. Below the areas A2 and A3, connection buttons A6 and A7 for connecting to and logging in to the respective surveillance cameras 100 are provided.

For example, the surveillance camera 100 of the SSID [01234] and the surveillance camera 100 of the SSID [56789] can communicate with each other, and their status is displayed from the SSID.

Regarding the surveillance camera 100 of the SSID [01234], the tablet terminal 200 has acquired the SSID shown in FIG. From the SSID, the wireless communication control unit 205 of the tablet terminal 200 determines from the SSID that "C abnormality" is occurring and that the positioning is OFF during recording, and the area A2 of the display unit 202 is determined. It is displayed so that you can understand the fact. When an abnormality has occurred, for example, the "connection button" A6 is highlighted, and by pressing it, a password corresponding to the SSID can be generated and the user can log in. The areas A2 and A3 may function as buttons for logging in.

FIG. 7 shows a flow of processing for connecting to the surveillance camera 100 by the tablet terminal 200. First, in the tablet terminal 200 which is a client terminal, when the wireless communication control unit 205 connects to the surveillance camera 100 which is a host device, the static scan (Passive scan) in the wireless LAN technology is used to obtain the SSID in the peripheral device. Acquire (S10).

Since the SSIDs of all the surroundings are acquired by using the static scan, the acquired SSIDs include those not related to the monitoring system 1. In order not to display an irrelevant SSID, the tablet terminal 200, as shown in FIG. 4, has a management number related to the monitoring system 1 based on a method of converting a "management number" to an SSID in a predetermined application. Only can be displayed in an easy-to-understand manner with a button or the like on the display unit 202 of the tablet terminal 200 having a touch panel function, for example.

Subsequently, the main control unit 201 analyzes the SSID acquired by the wireless communication control unit 205 to determine the control number of the surveillance camera 100 and the device state (S11). The main control unit 201 causes the display unit 202 to display the control number and the device status using the determination result (S12).

Further, when the user 210 logs in to the specific camera 100, the main control unit 201 analyzes the password generation rule from the SSID of the camera (S13), and after generating the password based on the rule (S14). , Log in (S15). By logging in to the camera 100 designated by the user 210 in this way, the tablet terminal 200 can acquire the video recorded from the surveillance camera 100 and display it on the display unit 202, as well as the details of the device state. It is possible to make various confirmations and various settings.

As described above, according to the present embodiment, in the wireless communication between the surveillance camera 100 and the tablet terminal 200 in the surveillance system 1, it is possible to prevent communication failure and password leakage due to a password transmission error. Further, the tablet terminal 200 can use wireless communication without being aware of the SSID and password of the surveillance camera 100. Further, by making the rule for generating the password from the SSID variable, it is possible to prevent the password from being easily guessed. Further, the tablet terminal 200 can read the information (device state (presence / absence of abnormality, setting information)) of the connection-destination surveillance camera 100 from the SSID without establishing communication.

The present invention has been described above based on the embodiments. This embodiment is an example, and it will be understood by those skilled in the art that various modifications are possible for the combination of each of these components, and that such modifications are also within the scope of the present invention.

1 Surveillance system (communication system) 100 Surveillance camera (communication device / host device) 101, 201 Main control unit 102 Video acquisition unit 103 Camera 104 Video distribution unit 105, 205 Wireless communication control unit 106 Data control unit 107, 207 RAM 108, 208 ROM 109, 209 Wireless communication module 200 Tablet terminal (client device) 202 Display unit 204 User operation Control unit 210 User

Claims (6)

A communication device having a control unit and a communication unit and having a wireless communication function.
The control unit
Generates wireless communication identification information of the communication device, including a control number that identifies the communication device and a password generation rule.
Based on the password generation rule, a password is generated from the identification information on the wireless communication.
Set the generated password as the login password of the communication device, and set it.
The communication unit
A communication device characterized by transmitting broadcast information including identification information on wireless communication. The communication device according to claim 1, wherein the control unit includes state information of the communication device in the identification information on wireless communication. The communication device according to claim 1, wherein the control unit includes setting information of the communication device in the identification information on wireless communication. A communication system including the communication device according to claim 1 and a terminal device capable of connecting to the communication device by wireless communication.
The terminal device determines information regarding the generation rule of the password included in the identification information, generates a password based on the determined generation rule, and logs in to the communication device with the password. system. The control unit
Generates second wireless communication identification information for the communication device, including a second password generation rule that is different from the current password generation rule.
Based on the second password generation rule, a second password is generated from the identification information on the second wireless communication.
Change the login password of the communication device to the second password,
The communication unit
The communication device according to claim 1, wherein the broadcast information including the identification information in the second wireless communication is transmitted. A communication system including the communication device according to claim 5 and a terminal device capable of connecting to the communication device by wireless communication.
The terminal device determines information regarding the second password generation rule included in the identification information, generates a password based on the determined second password generation rule, and logs in to the communication device with the password. A communication system characterized by

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